323 results on '"Gutiérrez-Rodríguez, Marta"'
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2. Te lo cuentan las matemáticas: Te lo cuentan una espía, una astronauta y una piloto
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Beatriz Álvarez Díaz, Ixchel Dzohara Gutiérrez Rodríguez, Marta Pérez Rodríguez
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- 2022
3. The Spanish Society of Medicinal Chemistry: Promoting Pharmaceutical R&D in Spain since 1977.
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Bartolomé‐Nebreda, José‐Manuel, de Pascual‐Teresa, Beatriz, Gutiérrez‐Rodríguez, Marta, and Martín‐Martínez, Mercedes
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- 2024
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4. Rewriting the Witch in Alix E. Harrow’s The Once and Future Witches
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Muñiz Sirgo, Alicia, Gutiérrez Rodríguez, Marta María, Universidad de Valladolid. Facultad de Filosofía y Letras, Muñiz Sirgo, Alicia, Gutiérrez Rodríguez, Marta María, and Universidad de Valladolid. Facultad de Filosofía y Letras
- Abstract
This undergraduate dissertation contributes to the existing scholarship about witches by exploring the intricate and myriad representations of the symbol over time, concretely, from its origin in the Early Modern Period to its revalorization in the present time. In addition, certain identities of the witch are analyzed: as a monster, as a girl, as a mother, as an old hag, as an herbalist-healer-midwife witch, queer and black. The focus of the research is Alix E. Harrow‘s postmodernist novel The Once and Future Witches. In it, the figure of the witch, affected by the shattered postmodern actuality, is reappropriated as a signifier of feminism. However, this study also reflects on the potential contradictions derived from its imitation of the shifting tendencies of the movement. The key findings demonstrate the advancement of the feminist agenda of the novel, although pointing simultaneously to regressive and patriarchal ideologies that are difficult to detach from the figure., Este trabajo de fin de grado contribuye a la bibliografía existente sobre brujas mediante la exploración de las complejas y múltiples representaciones del símbolo a lo largo del tiempo, en concreto, desde su origen en la Edad Moderna hasta su revalorización en la actualidad. A su vez, se analizan determinadas identidades de la bruja: como monstruo, como chica, como madre, como una anciana bruja, como una curandera o matrona, queer o negra. El enfoque de esta investigación es la novela postmodernista de Alix E. Harrow Las Brujas del Ayer y del Mañana. En ella, la figura de la bruja, siendo afectada por el mundo postmoderno fragmentado, es reapropiada como un significante del feminismo. Sin embargo, este estudio también refleja las posibles contradicciones derivadas de su imitación de las cambiantes corrientes del movimiento feminista. Los principales hallazgos demuestran el avance de la agenda feminista de la novela, aunque señalan simultanéamente las ideologías patriarcales y regresivas tan difíciles de separar de la figur, Departamento de Filología Inglesa, Grado en Estudios Ingleses
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- 2024
5. The Fall of the House of Poe: Gothic Elements in Netflix's Adaptation of the Usher family
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Magallanes Morcuende, Jose, Gutiérrez Rodríguez, Marta María, Universidad de Valladolid. Facultad de Filosofía y Letras, Magallanes Morcuende, Jose, Gutiérrez Rodríguez, Marta María, and Universidad de Valladolid. Facultad de Filosofía y Letras
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Gothic literature emerged in the eighteenth century, with the latter half of that century seeing its emergence on the American continent. While initially rejected due to American practicality, writers quickly adapted Gothic literary aspects to fit their cultural traits. Edgar Allan Poe, a well-known American Gothic writer of the twentieth century, exemplifies this trend in his work “The Fall of the House of Usher”. In 2023, Mike Flanagan created a contemporary adaptation of the work as a Netflix series, which is based on the original work, but also references both other works by Poe and his own life. The aim of this essay is to explore how the American Gothic has been modified in a twenty-first century TV series, while showing how one short story by Poe is used as framework for his whole life and works., La literatura gótica surgió en el siglo XVIII, siendo la segunda mitad de ese siglo testigo de su aparición en el continente americano. Aunque en un principio fue rechazada debido a la practicidad americana, los escritores no tardaron en adaptar los aspectos literarios góticos a sus rasgos culturales. E. A. Poe, conocido escritor gótico estadounidense del siglo XX, ejemplifica esta tendencia en su obra “La caída de la casa Usher”. En 2023, Mike Flanagan creó una adaptación contemporánea de la obra como serie de Netflix, basada en la obra original, pero también referencia a otras obras de Poe y a su propia vida. El objetivo de este ensayo es explorar cómo se ha modificado el gótico americano en una serie de televisión del siglo XXI, mostrando a su vez cómo un relato corto de Poe se utiliza como marco para toda su vida y obra., Departamento de Filología Inglesa, Grado en Estudios Ingleses
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- 2024
6. Clinical mutations in the TERT and TERC genes coding for telomerase components induced oxidative stress, DNAdamage at telomeres and cell apoptosis besides decreased telomerase activity
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Instituto de Salud Carlos III, European Commission, Consejo Superior de Investigaciones Científicas (España), Comunidad de Madrid, Fundación Científica Asociación Española Contra el Cáncer, Fernández-Varas, Beatriz, Manguan-García, Cristina, Rodriguez-Centeno, Javier, Mendoza-Lupiáñez, Lucía, Calatayud, Joaquín, Perona, Rosario, Gutiérrez-Rodríguez, Marta, Benítez-Buelga, Carlos, Sastre, Leandro, Instituto de Salud Carlos III, European Commission, Consejo Superior de Investigaciones Científicas (España), Comunidad de Madrid, Fundación Científica Asociación Española Contra el Cáncer, Fernández-Varas, Beatriz, Manguan-García, Cristina, Rodriguez-Centeno, Javier, Mendoza-Lupiáñez, Lucía, Calatayud, Joaquín, Perona, Rosario, Gutiérrez-Rodríguez, Marta, Benítez-Buelga, Carlos, and Sastre, Leandro
- Abstract
Telomeres are nucleoprotein structures at the end of chromosomes that maintain their integrity. Mutations in genes coding for proteins involved in telomere protection and elongation produce diseases such as dyskeratos is congenita oridiopathic pulmonary fibrosis known as telomeropathies. These diseases are characterized by premature telomere shortening, increased DNA damage and oxidative stress. Genetic diagnosis of telomeropathy patients has identified mutations in the genes TERT and TERC coding for telomerase components but the functional consequences of many of these mutations still have to be experimentally demonstrated. The activity of twelve TERT and five TERC mutants, five of them identified in Spanish patients, has been analyzed. TERT and TERC mutants were expressed in VA-13 human cells that express low telomerase levels and the activity induced was analyzed. The production of reactive oxygen species, DNA oxidation and TRF2 association at telomeres,DNA damage response and cell apoptosis were determined.Most mutations presented decreased telomerase activity,as compared to wild-type TERT and TERC.In addition,the expression of several TERT and TERC mutants induced oxidative stress, DNA oxidation, DNA damage, decreased recruitment of the shelterin component TRF2 to telomeres and increased apoptosis.These observations migh tindicate that the increase in DN Adamage and oxidative stress observed in cells from telomeropathy patients is dependent on their TERT or TERC mutations. Therefore, analysis of the effect of TERT and TERC mutations of unknown function on DNA damage and oxidative stress could be of great utility to determine the possible pathogenicity of these variants.
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- 2024
7. Exchangeable Self-Assembled Lanthanide Antennas for PLIM Microscopy
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European Commission, Junta de Andalucía, Consejo Superior de Investigaciones Científicas (España), Universidad de Jaén, Universidad de Granada, Ministerio de Educación y Formación Profesional (España), Fueyo-González, Francisco [0000-0003-1889-6792], Izquierdo-García, Carolina [0000-0001-9801-4053], Gutiérrez-Rodríguez, Marta [0000-0001-9855-8341], Herranz, Rosario [0000-0002-0273-2761], González-Vera, Juan A. [0000-0001-8713-5829], Ruiz-Arias, Alvaro, Fueyo-González, Francisco, Izquierdo-García, Carolina, Navarro, Amparo, Gutiérrez-Rodríguez, Marta, Herranz, Rosario, Burgio, Chiara, Reinoso, Antonio, Cuerva, Juan M., Orte, Angel, González-Vera, Juan A., European Commission, Junta de Andalucía, Consejo Superior de Investigaciones Científicas (España), Universidad de Jaén, Universidad de Granada, Ministerio de Educación y Formación Profesional (España), Fueyo-González, Francisco [0000-0003-1889-6792], Izquierdo-García, Carolina [0000-0001-9801-4053], Gutiérrez-Rodríguez, Marta [0000-0001-9855-8341], Herranz, Rosario [0000-0002-0273-2761], González-Vera, Juan A. [0000-0001-8713-5829], Ruiz-Arias, Alvaro, Fueyo-González, Francisco, Izquierdo-García, Carolina, Navarro, Amparo, Gutiérrez-Rodríguez, Marta, Herranz, Rosario, Burgio, Chiara, Reinoso, Antonio, Cuerva, Juan M., Orte, Angel, and González-Vera, Juan A.
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- 2023
8. Multiple Pathways for Lanthanide Sensitization in Self-Assembled Aqueous Complexes
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Navarro, Amparo, primary, Ruiz-Arias, Alvaro, additional, Fueyo-González, Francisco, additional, Izquierdo-García, Carolina, additional, Peña-Ruiz, Tomás, additional, Gutiérrez-Rodríguez, Marta, additional, Herranz, Rosario, additional, Cuerva, Juan M., additional, Gonzalez-Vera, Juan A., additional, and Orte, Angel, additional
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- 2024
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9. Back Cover: Exchangeable Self‐Assembled Lanthanide Antennas for PLIM Microscopy
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Ruiz‐Arias, Alvaro, primary, Fueyo‐González, Francisco, additional, Izquierdo‐García, Carolina, additional, Navarro, Amparo, additional, Gutiérrez‐Rodríguez, Marta, additional, Herranz, Rosario, additional, Burgio, Chiara, additional, Reinoso, Antonio, additional, Cuerva, Juan M., additional, Orte, Angel, additional, and González‐Vera, Juan A., additional
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- 2023
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10. Exchangeable Self‐Assembled Lanthanide Antennas for PLIM Microscopy
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Ruiz-Arias, Alvaro, primary, Fueyo-González, Francisco, additional, Izquierdo-García, Carolina, additional, Navarro, Amparo, additional, Gutiérrez-Rodríguez, Marta, additional, Herranz, Rosario, additional, Burgio, Chiara, additional, Reinoso, Antonio, additional, Cuerva, Juan M., additional, Orte, Angel, additional, and González Vera, Juan Antonio, additional
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- 2023
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11. The Subversion of the Victorian Woman in Sarah Waters’ Fingersmith
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Cabañas López, Ariadna, Gutiérrez Rodríguez, Marta María, Universidad de Valladolid. Facultad de Filosofía y Letras, Cabañas López, Ariadna, Gutiérrez Rodríguez, Marta María, and Universidad de Valladolid. Facultad de Filosofía y Letras
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The purpose of this study is to prove the subversion of the figure of the Victorian woman in Sarah Waters’ neo-Victorian novel Fingersmith. Fingersmith follows the story of two women tangled in a web of lies and manipulations that will ultimately fall in love with each other in the process. Lesbian representation in literature is especially worthy of recovering and elevating, since it is lacking as opposed to the amount of literature that the gay community can claim from the Victorian period. Following the research from different critics in the background of the Victorian era, gender roles, feminism and lesbian fiction we will analyse how Sarah Waters female protagonists fit into their theories and if they, in fact, succeed in subverting the stereotype of the Victorian woman., El objetivo de este estudio consiste en probar la subvesión de la figura de la mujer victoriana en la novela neo-Victoriana Fingersmith o Falsa Identidad de Sarah Waters. Falsa Identidad es la historia de dos mujeres envueltas en una trama de mentiras y manipulaciones que se acabarán enamorando en el proceso. La representación lésbica en la literatura es digna de ser recuperada y elevada, ya que es escasa en comparación con la cantidad de literatura victoriana que puede ser revindicada por la comunidad gay. Continuando con la investigación de diferentes críticos especializados en la era victoriana, roles de género, feminismo y literatura lésbica analizaremos cómo los personajes femeninos de Sarah Waters encajan en sus teorías y si, en realidad, la autora consigue subvertir el estereotipo de la mujer victoriana con éxito., Departamento de Filología Inglesa, Grado en Estudios Ingleses
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- 2023
12. The Rise of a New Genre: Dystopian Fantasy in Brandon Sanderson’s The Final Empire
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Caballero Gutiérrez, Bryan, Gutiérrez Rodríguez, Marta María, Universidad de Valladolid. Facultad de Filosofía y Letras, Caballero Gutiérrez, Bryan, Gutiérrez Rodríguez, Marta María, and Universidad de Valladolid. Facultad de Filosofía y Letras
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Even though innovation inside literary fiction has been widely studied, there is scarce information and research carried out about the new subgenres that appear as a product of the hybridization of traditional genres. This undergraduate dissertation tries to fill that empty space by analyzing a potential new subgenre, dystopian fantasy. This is achieved by constructing a framework consisting of the most relevant elements for both fantasy and dystopian fiction and using it to analyze Brandon Sanderson’s The Final Empire. The selection of this specific novel derives from its massive success and from the influence it has had in other media despite its contemporaneity. The analysis of this novel provides tangible examples, which in turn solidify the theoretical framework and make it more reliable. The consolidation of this framework promotes the further exploration and analysis of other comparable stories, as a means to relabel them as necessary., Aunque la innovación en la ficción literaria se ha estudiado de manera exhaustiva, hay escasa información y estudios sobre los nuevos subgéneros que han surgido de la hibridación de los géneros tradicionales. Este trabajo de fin de grado intenta llenar ese vacío con el análisis de un posible nuevo subgénero, la fantasía distópica. Para ello, se ha construído un marco teórico formado por los elementos más relevantes de la ficción fantástica y de la distópica, que se utilizan para analizar El Imperio Final, de Brandon Sanderson. La elección de esta novela deriva de su éxito masivo y de su influencia en otros medios a pesar de su contemporaneidad. El análisis de esta novela proporciona ejemplos tangibles, que a su vez solidifican el marco teórico y lo hacen más fiable. La consolidación de este marco promueve la exploración y análisis de otras historias similares, como método para reetiquetarlas según sea necesario., Departamento de Filología Inglesa, Grado en Estudios Ingleses
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- 2023
13. Witches and brujas: A comparison of The Witch (2015) and Akelarre (2020)
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Serrano Esteban, Ana, Gutiérrez Rodríguez, Marta María, Universidad de Valladolid. Facultad de Filosofía y Letras, Serrano Esteban, Ana, Gutiérrez Rodríguez, Marta María, and Universidad de Valladolid. Facultad de Filosofía y Letras
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The early modern period experienced a more well-rounded creation of one of the most popular scapegoats at the time: the witch. As a result, thousands of women and men (to a lesser extent) were victims of the witch hunts in Europe, which also translated to New England. The following dissertation aims to discover and compare in which ways the stereotype of the early modern period is represented in the films The Witch and Akelarre. Following a thorough analysis of the characteristics of the witches in both films, light will be shed on how accurate the stereotype of the witch is represented in these, as well as how culture represents traditional imagery of witchcraft in contemporary society., La edad moderna fue testigo de la creación de una visión más compleja de uno de los chivos expiatorios más comunes de la época: la bruja. Como resultado, miles de mujeres y hombres (en menor medida) fueron víctimas de las cazas de brujas europeas, las cuales también se trasladaron a Nueva Inglaterra. El siguiente Trabajo de Fin de Grado tiene como objetivo descubrir y comparar de qué forma se representa el estereotipo de la bruja de este periodo en las películas La bruja y Akelarre. Tras un análisis completo de las características de las brujas en ambas películas, podremos concluir la fidelidad con que se representa el estereotipo de la bruja, además de cómo la cultura representa imágenes tradicionales como la brujería en la sociedad de hoy en día., Departamento de Filología Inglesa, Grado en Estudios Ingleses
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- 2023
14. IQM-22110, a new selective inhibitor of KChIP3 and its electrophysiological effects on Kv4.3, Kv4.3/KChIP3 and Kv4.3/KChIP2 currents
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Socuéllamos, Paula G., de Benito-Bueno, A., Ropero, M., Díez, S., Elizalde, P., Bonache de Marcos, María Ángeles, Viedma, Carmen, Martín-Martínez, Mercedes, Gutiérrez-Rodríguez, Marta, Valenzuela, Carmen, Socuéllamos, Paula G., de Benito-Bueno, A., Ropero, M., Díez, S., Elizalde, P., Bonache de Marcos, María Ángeles, Viedma, Carmen, Martín-Martínez, Mercedes, Gutiérrez-Rodríguez, Marta, and Valenzuela, Carmen
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Kv4 channels generate rapidly activating and inactivating outward currents responsible for the repolarization of both cardiac and neuronal action potentials through ITO (transient outward current) and IA (A-type Kþ current), respectively. Kv4 dysfunctions have been identified in both cardiac and neuronal diseases (Brugada syndrome, atrial fibrillation, epilepsy or Alzheimer’s disease). However, Kv4 channels need to assemble with regulatory subunits to fully reproduce ITO and IA currents. Among them, we will focus on KChIPs (potassium channel interacting proteins), being KChIP3 predominant in the brain and KChIP2 in both brain and heart. The assembly of these regulatory subunits not only modulates the biophysical properties of the channel, but also its pharmacology. For this reason, we have analysed the electrophysiological effects of IQM-22110 (a novel KChIP3 ligand) on the currents generated by Kv4.3, Kv4.3/KChIP3 and Kv4.3/KChIP2 channels. CHO cells were transiently transfected, and the potassium currents were recorded using the whole-cell patchclamp technique. Our results indicate that IQM-22110 exerts differential effects on these currents, being the concentration-dependence of inhibition modified, exhibiting a biphasic curve when KChIP3 is present, thus suggesting two binding sites for IQM-22110 in this complex. With molecular dynamics and site-directed mutagenesis, we have identified the binding pocket corresponding to the high affinity site. Also, we have demonstrated that IQM-22110 binds to the closed-active state of the channel. In this study: i) IQM-22110 has proven to be a selective inhibitor of Kv4.3/KChIP3 at low concentrations, and ii) a new binding pocket for selective KChIP3/Kv4.3 ligands has been identified.
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- 2023
15. Exchangeable Self‐Assembled Lanthanide Antennas for PLIM Microscopy.
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Ruiz‐Arias, Alvaro, Fueyo‐González, Francisco, Izquierdo‐García, Carolina, Navarro, Amparo, Gutiérrez‐Rodríguez, Marta, Herranz, Rosario, Burgio, Chiara, Reinoso, Antonio, Cuerva, Juan M., Orte, Angel, and González‐Vera, Juan A.
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ANTENNAS (Electronics) ,MICROSCOPY ,RARE earth metals ,PHOTOLUMINESCENCE ,LUMINESCENCE - Abstract
Lanthanides have unique photoluminescence (PL) emission properties, including very long PL lifetimes. This makes them ideal for biological imaging applications, especially using PL lifetime imaging microscopy (PLIM). PLIM is an inherently multidimensional technique with exceptional advantages for quantitative biological imaging. Unfortunately, due to the required prolonged acquisitions times, photobleaching of lanthanide PL emission currently constitutes one of the main drawbacks of PLIM. In this study, we report a small aqueous‐soluble, lanthanide antenna, 8‐methoxy‐2‐oxo‐1,2,4,5‐tetrahydrocyclopenta[de]quinoline‐3‐phosphonic acid, PAnt, specifically designed to dynamically interact with lanthanide ions, serving as exchangeable dye aimed at mitigating photobleaching in PLIM microscopy in cellulo. Thus, self‐assembled lanthanide complexes that may be photobleached during image acquisition are continuously replenished by intact lanthanide antennas from a large reservoir. Remarkably, our self‐assembled lanthanide complex clearly demonstrated a significant reduction of PL photobleaching when compared to well‐established lanthanide cryptates, used for bioimaging. This concept of exchangeable lanthanide antennas opens new possibilities for quantitative PLIM bioimaging. [ABSTRACT FROM AUTHOR]
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- 2024
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16. IQM-22110, a new selective inhibitor of KChIP3 and its electrophysiological effects on Kv4.3, Kv4.3/KChIP3 and Kv4.3/KChIP2 currents
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Socuéllamos, Paula G., primary, de Benito-Bueno, Angela, additional, Ropero, Maria, additional, Diez, Sara, additional, Elizalde, Pablo, additional, Bonache, M. Angeles, additional, Viedma, Carmen, additional, Martín-Martínez, Mercedes, additional, Gutiérrez-Rodríguez, Marta, additional, and Valenzuela, Carmen, additional
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- 2023
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17. SARS-CoV-2 Fears Green: The Chlorophyll Catabolite Pheophorbide A Is a Potent Antiviral
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Consejo Superior de Investigaciones Científicas (España), European Commission, German Research Foundation, Jiménez-Alemán, G. H. [0000-0002-6930-9589], Castro, Victoria [0000-0001-9151-5138], Gutiérrez-Rodríguez, Marta [0000-0001-9855-8341], Garaigorta, Urtzi [0000-0002-0683-5725], Solano, Roberto [0000-0001-5459-2417], Jiménez-Alemán, G. H., Castro, Victoria, Longdaitsbehere, Addis, Gutiérrez-Rodríguez, Marta, Garaigorta, Urtzi, Solano, Roberto, Gastaminza, Pablo, Consejo Superior de Investigaciones Científicas (España), European Commission, German Research Foundation, Jiménez-Alemán, G. H. [0000-0002-6930-9589], Castro, Victoria [0000-0001-9151-5138], Gutiérrez-Rodríguez, Marta [0000-0001-9855-8341], Garaigorta, Urtzi [0000-0002-0683-5725], Solano, Roberto [0000-0001-5459-2417], Jiménez-Alemán, G. H., Castro, Victoria, Longdaitsbehere, Addis, Gutiérrez-Rodríguez, Marta, Garaigorta, Urtzi, Solano, Roberto, and Gastaminza, Pablo
- Abstract
SARS-CoV-2 pandemic is having devastating consequences worldwide. Although vaccination advances at good pace, effectiveness against emerging variants is unpredictable. The virus has displayed a remarkable resistance to treatments and no drugs have been proved fully effective against COVID-19. Thus, despite the international efforts, there is still an urgent need for new potent and safe antivirals against SARS-CoV-2. Here, we exploited the enormous potential of plant metabolism using the bryophyte Marchantia polymorpha L. and identified a potent SARS-CoV-2 antiviral, following a bioactivity-guided fractionation and mass-spectrometry approach. We found that the chlorophyll derivative Pheophorbide a (PheoA), a porphyrin compound similar to animal Protoporphyrin IX, has an extraordinary antiviral activity against SARS-CoV-2, preventing infection of cultured monkey and human cells, without noticeable cytotoxicity. We also show that PheoA targets the viral particle, interfering with its infectivity in a dose- and time-dependent manner. Besides SARS-CoV-2, PheoA also displayed a broad-spectrum antiviral activity against enveloped RNA viral pathogens such as HCV, West Nile, and other coronaviruses. Our results indicate that PheoA displays a remarkable potency and a satisfactory therapeutic index, which together with its previous use in photoactivable cancer therapy in humans, suggest that it may be considered as a potential candidate for antiviral therapy against SARS-CoV-2.
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- 2021
18. Highly functionalized 2-oxopiperazine-based peptidomimetics: An approach to PAR1 antagonists
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Valdivielso, Ángel M., Ventosa-Andrés, Pilar, Tato, Francisco, Fernández-Ibañez, M. Ángeles, Pappos, Ioannis, Tsopanoglou, Nikos E., García-López, M. Teresa, Gutiérrez-Rodríguez, Marta, and Herranz, Rosario
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- 2013
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19. Study of kv4.3 channelosome: novel kchip2 ligands as pharmacological tools
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Martinez-Salas, P., Viedma-Barba, C., Benito-Bueno, Ángela de, Socuéllamos, Paula G., Daniel-Mozo, M., Albert, Armando, Martín-Martínez, Mercedes, Valenzuela, Carmen, Gutiérrez-Rodríguez, Marta, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), and Consejo Superior de Investigaciones Científicas (España)
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KV4.3 channelosome ,KChIP2 ligands ,Atrial fibrillation - Abstract
Trabajo presentado en el VIII Symposia of medicinal chemistry young researchers, celebrado en Barcelona (España) el 22 de julio de 2022., Ion channels are macromolecular complexes present in the plasma membrane and in intracellular organelles of the cells, where they play important functions. The dysfunction of these channels results in several disorders named channelopathies, which represent a challenge for study and treatment.[1] We are focused on voltage-gated potassium channels, specifically on KV4.3. Within the heart, KV4.3 channels generate the transient outward potassium current (ITO). However, ITO characteristics are only observed when KV4.3 assembles with accessory subunits as KChIP2 and DPP6. KV4.3 channelosome play a key role in atrial fibrillation (AF), the most common cardiac arrhythmia, with an estimated prevalence in the general population of 1.5–2%. However, current antiarrhythmic drugs for AF prevention have limited efficacy and considerable potential for adverse effects.[2] KChIP2 (Potassium Channel Interacting Protein 2) belongs to the calcium binding protein superfamily. It is the KChIP member predominantly expressed in heart and a key regulator of cardiac action potential duration. Novel KChIP2 ligands could be a useful pharmacological tool to understand the role of KV4.3 channelosome in AF and it could help to discover new treatments for AF. [3] In this communication, we will describe a multidisciplinary approach that, starting with a structure-based virtual screening, followed by an iterative process of synthesis/biological evaluation/docking studies, has led to the identification of new KChIP2 ligands., PID2019-104366RB-C21, PID2019-104366RB-C22, PID2020-114256RB-I00 and PID2020-119805RB-I00 grants funded by MCIN/AEI/10.13039/501100011033; and PIE202180E073 and 2019AEP148 funded by CSIC. C.V.B. holds PRE2020-093542 FPI grant funded by MCIN/AEI/10.13039/501100011033. PGS was recipient of an FPU grant (FPU17/02731). AB-B holds BES-2017-080184 FPI grant and A.P-L.holds RYC2018-023837-I grant both funded by MCIN/AEI/ 10.13039/501100011033 and by “ESF Investing in your future”.
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- 2022
20. Development of pharmacological tools to study the kv4.3 channelosome in atrial fibrillation
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Viedma-Barba, C., Sandin, P., Bonache de Marcos, María Ángeles, Martín-Martínez, Mercedes, Valenzuela, Carmen, Gutiérrez-Rodríguez, Marta, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), and Consejo Superior de Investigaciones Científicas (España)
- Abstract
Resumen del trabajo presentado en el XX National Meeting of the Spanish Society of Medicinal Chemistry, celebrado en Santiago de Compostela (España) del 19 al 22 de junio de 2022., Ion channels are macromolecular complexes present in the plasma membrane and in intracellular organelles of the cells, where they play important functions, such as smooth muscle contraction or secretion of hormones. The dysfunction of these channels results in several disorders named channelopathies, which represent a challenge for study and treatment.[1] We are focused on voltage-gated potassium channels, specifically on KV4.3 and its role in atrial fibrillation (AF). KV4.3 channel is expressed in smooth muscle, heart and brain. Its activation generates outward currents operating at subthreshold membrane potentials as recorded from myocardial cells (ITO, transient outward current). KV4.3 plays a key role in AF, the most common cardiac arrhythmia, with an estimated prevalence in the general population of 1.5–2%. However, current antiarrhythmic drugs for AF prevention have limited efficacy and considerable potential for adverse effects.[2] To reproduce the ITO currents, KV4.3 channels need to assemble with other subunits, forming channelosome. KChIPs (Potassium Channel Interacting Proteins), which belong to the calcium binding protein superfamily, forms the KV4.3 channelosome, along with other proteins.[3] To study the complex interaction of KV4.3 channelosome and the development of modulators, the interplay of different techniques is central to advance knowledge. In this regard, the development of novel KChIPs modulators and fluorescent biosensors constitutes invaluable pharmacological tools to unravel the KV4 channelosome and its role in AF.[3] In this communication, we will describe preliminary results towards the identification of new pharmacological tools to study the KChIPs/KV4 interaction., This work was supported by the projects: PID2019-104366RB-C21, PID2019-104366RB-C22, PID2020-114256RB-I00 and PID2020-119805RB-I00 funded by MCIN/ AEI /10.13039/501100011033; and the projects PIE202180E073 and 2019AEP148 funded by CSIC. C. Viedma Barba holds the grant PRE2020-093542 and M. Valencia holds the grant PRE2020-093950, both funded by MCIN/AEI/10.13039/501100011033. A. Pérez-Lara holds the grant RYC2018-023837-I funded by MCIN/AEI/10.13039/501100011033 and by “ESF Investing in your future”.
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- 2022
21. New approaches for the identification of KChIP2 ligands to study the KV4.3 channelosome in atrial fibrillati
- Author
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Viedma-Barba, C., Martinez-Salas, P., Benito-Bueno, Ángela de, Socuéllamos, Paula G., Marín-Olivero, Irene, Daniel-Mozo, M., Pérez-Lara, Ángel, González-Vera, Juan A., Orte, Angel, Albert, Armando, Martín-Martínez, Mercedes, Valenzuela, Carmen, Gutiérrez-Rodríguez, Marta, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), and Consejo Superior de Investigaciones Científicas (España)
- Abstract
Resumen del trabajo presentado en el VIII Congreso Red Española de Canales iónico, celebrado en Alicante (España) del 24 al 27 de mayo de 2022., Ion channels are macromolecular complexes present in the plasma membrane and in intracellular organelles of the cells, where they play important functions. The dysfunction of these channels results in several disorders named channelopathies, which represent a challenge for study and treatment.[1] We are focused on voltage-gated potassium channels, specifically on KV4.3. Kv4.3 is expressed in smooth muscle, heart and brain. Within the heart, Kv4.3 channels generate the transient outward potassium current (ITO). However, ITO characteristics are only observed when Kv4.3 assemble with accessory subunits as KChIP2 and DPP6. KV4.3 channelosome play a key role in atrial fibrillation (AF),the most common cardiac arrhythmia, with an estimated prevalence in the general population of 1.5–2%. However, current antiarrhythmic drugs for AF prevention have limited efficacy and considerable potential for adverse effects.[2] KChIP2 (Potassium Channel Interacting Protein 2) belongs to the calcium binding protein superfamily. It is the KChIP member predominantly expressed in heart and a key regulator of cardiac action potential duration. The identification of novel KChIP2 ligands could be useful to understand the role of KV4.3 channelosome in AF and it could help to discover new treatments for AF. [3] In this regard, structure-based virtual screening could be an important tool to accelerate the identification of novel KChIP2 ligands. In this communication, we will describe a multidisciplinary approach that, starting with a structurebased virtual screening, followed by an iterative process of synthesis/biological evaluation/docking studies, has led to the identification of new KChIP2 ligands., PID2019-104366RB-C21, PID2019-104366RB-C22, PID2020-114256RB-I00 and PID2020-119805RB-I00 grants funded by MCIN/AEI/10.13039/501100011033; and PIE202180E073 and 2019AEP148 funded by CSIC. C.V.B. holds PRE2020-093542 FPI grant funded by MCIN/AEI/10.13039/501100011033. PGS was recipient of an FPU grant (FPU17/02731). AB-B holds BES-2017-080184 FPI grant and A.P-L.holds RYC2018-023837-I grant both funded by MCIN/ AEI/ 10.13039/501100011033 and by “ESF Investing in your future”
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- 2022
22. Electrophysiological effects of IQM-266 on Itof. Role of cardiac beta subunits
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Benito-Bueno, Ángela de, Socuéllamos, Paula G., Cercós, Pilar, Izquierdo García, Carolina, Martín-Martínez, Mercedes, Delgado, Carmen, Gutiérrez-Rodríguez, Marta, Valenzuela, Carmen, Ministerio de Economía y Competitividad (España), Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Instituto de Salud Carlos III, and Consejo Superior de Investigaciones Científicas (España)
- Abstract
Trabajo presentado en el VIII Congreso Red Española de Canales Sónicos, celebrado en Alicante (España) del 24 al 27 de mayo de 2022., The transient outward potassium current (Itof), responsible for the repolarization of cardiac action potential, is generated by the activation of KV4 channels assembled with KChIP2 and other accessory subunits, such as DPP6 and KCNE2. To test the hypothesis that these subunits modify 18 VIII Congreso Red Española de Canales Iónicos the pharmacological response of the channel, we have analyzed the electrophysiological efects of IQM-266 on the currents generated by KV4.3/KChIP2, KV4.3/KChIP2/DPP6, KV4.3/KChIP2/KCNE2 channels and on the total I K and I tof in cardiac myocytes. CHO cells were transiently transfected (KV4.3/KChIP2, KV4.3/KChIP2/DPP6 or KV4.3/KChIP2/KCNE2), and the potassium currents were recorded using the whole-cell patch-clamp technique. In mice cardiac myocytes, potassium currents were recorded by using the perforated patch-clamp technique. Our results indicate that IQM-266 exerts an activating efect on the I K and I tof peak amplitude in cardiac myocytes. To decipher whichbeta subunits were involved in these efects, IQM-266 was studied in CHO cells transfected with the above-mentioned cDNAs. IQM-266, at 3 μM, induced an increase in the KV4.3/KChIP2 current charge, which augmented in the presence of DPP6, whereas it was abolished when KCNE2 was expressed. However, IQM-266 decreased the peak amplitude in transfected cells. In this study we concluded that: i) IQM-266 is a new activator of the I tof in mice cardiac myocytes, ii) DPP6 and KCNE2 modify the pharmacological response of KV4.3/KChIP2 channels to IQM-266, and iii) the presence of either DPP6 or KCNE2 is not enough to reproduce the activator efect observed when IQM-266 was tested on Ito recorded from mouse ventricular myocytes., Grants SAF2016-75021-R, RTI2018-097189-B-C22 funded by MCIN/AEI/10.13039/501100011033 and by ¿ERDF A way of making Europe¿; Grants PID2019-104366RB-C21, PID2019-104366RB-C22, PID2020-113238RB-I00 funded by MCIN/AEI/ 10.13039/501100011033; Grant CB/11/00222 funded by ISCIII CIBERCV; Grants PIE202180E073 and 2019AEP148 funded by CSIC. Grants BES-2017-080184, BES-2010-036573 and FPU17/02731 funded by MCIN/AEI/10.13039/501100011033 and by ¿ESF Investing in your future¿.
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- 2022
23. IQM-PC332, a Novel DREAM Ligand with Antinociceptive Effect on Peripheral Nerve Injury-Induced Pain
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Socuéllamos, Paula G., Olivos Ore, Luis Alcides, Barahona Gomáriz, María Victoria, Cercós, Pilar, Pérez Pascual, Marta, Arribas Blázquez, Marina, Naranjo, José Ramón, Valenzuela, Carmen, Gutiérrez Rodríguez, Marta, Rodríguez Artalejo, Antonio, Socuéllamos, Paula G., Olivos Ore, Luis Alcides, Barahona Gomáriz, María Victoria, Cercós, Pilar, Pérez Pascual, Marta, Arribas Blázquez, Marina, Naranjo, José Ramón, Valenzuela, Carmen, Gutiérrez Rodríguez, Marta, and Rodríguez Artalejo, Antonio
- Abstract
Neuropathic pain is a form of chronic pain arising from damage of the neural cells that sense, transmit or process sensory information. Given its growing prevalence and common refractoriness to conventional analgesics, the development of new drugs with pain relief effects constitutes a prominent clinical need. In this respect, drugs that reduce activity of sensory neurons by modulating ion channels hold the promise to become effective analgesics. Here, we evaluated the mechanical antinociceptive effect of IQM-PC332, a novel ligand of the multifunctional protein downstream regulatory element antagonist modulator (DREAM) in rats subjected to chronic constriction injury of the sciatic nerve as a model of neuropathic pain. IQM-PC332 administered by intraplantar (0.01–10 µg) or intraperitoneal (0.02–1 µg/kg) injection reduced mechanical sensitivity by ≈100% of the maximum possible effect, with ED50 of 0.27 ± 0.05 µg and 0.09 ± 0.01 µg/kg, respectively. Perforated-patch whole-cell recordings in isolated dorsal root ganglion (DRG) neurons showed that IQM-PC332 (1 and 10 µM) reduced ionic currents through voltage-gated K+ channels responsible for A-type potassium currents, low, T-type, and high voltage-activated Ca2+ channels, and transient receptor potential vanilloid-1 (TRPV1) channels. Furthermore, IQM-PC332 (1 µM) reduced electrically evoked action potentials in DRG neurons from neuropathic animals. It is suggested that by modulating multiple DREAM–ion channel signaling complexes, IQM-PC332 may serve a lead compound of novel multimodal analgesics., Ministerio de Ciencia e Innovación (MICINN)/FEDER, Instituto de Salud Carlos III (ISCIII), Universidad Complutense, Consejo Superior de Investigaciones Científicas (CSIC), Sección Deptal. de Farmacología y Toxicología (Veterinaria), Fac. de Veterinaria, TRUE, pub
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- 2022
24. Is Prince Charming Still Alive? A Comparison of Traditional and Postmodernist Fairy Tales
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Morrondo Fernández, Sara, Gutiérrez Rodríguez, Marta María, Universidad de Valladolid. Facultad de Filosofía y Letras, Morrondo Fernández, Sara, Gutiérrez Rodríguez, Marta María, and Universidad de Valladolid. Facultad de Filosofía y Letras
- Abstract
Postmodernism in literature seeks to create new forms since it considers that everything has already been invented. For this reason, retellings arose, which are reinterpretations of previous works. This project will explain what masculinities consist of and what their objective is, in addition to showing what gender roles and stereotypes are attributed to men in fairy tales. Therefore, after an comparison between the male characters of four fairy tales in their original version and their respective postmodern versions, we will proceed to conclude if the theories that seek to blur rigid gender roles have achieved their goal in postmodern retellings or, on the contrary, the princes continue to maintain them in their physical appearance and behavior., El Postmodernismo en la literatura pretende crear nuevas formas ya que considera que ya está todo inventado. Por ello, surgieron los “retellings”, los cuales son reinterpretaciones de obras previas. En este proyecto se explicarán en qué consisten las masculinidades y cuál es su objetivo, además de mostrar cuales son los roles de género y los estereotipos que se atribuyen a los hombres en los cuentos de hadas. Por lo tanto, tras una comparación entre los personajes masculinos de cuatro cuentos de hadas en su versión original y sus respectivas versiones postmodernas, se procederá a concluir si las teorías que pretenden difuminar los rígidos roles de género han logrado su objetivo en los “retellings” postmodernistas o, por el contrario, los príncipes siguen manteniéndolos en su apariencia física y su comportamiento., Departamento de Filología Inglesa, Grado en Estudios Ingleses
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- 2022
25. Compounds for use in the treatment of viral infections by virus of the family coronaviridae
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Gutiérrez-Rodríguez, Marta, Izquierdo García, Carolina, Gastaminza, Pablo, Garaigorta, Urtzi, Gutiérrez-Rodríguez, Marta, Izquierdo García, Carolina, Gastaminza, Pablo, and Garaigorta, Urtzi
- Abstract
The present invention relates to new derivatives of 2-phenyl-quinoline-4-carboxylic acid or pharmaceutically acceptable salt thereof and to combination of said compounds with other active ingredients, for use in the treatment and/or prevention of viral infections by virus from the family Coronaviridae, to the use of said compound or its combinations in the manufacture of a medicament for the treatment or prevention of said diseases and to a method of treating and/or preventing said diseases by administration of said compound or its combinations.
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- 2022
26. 5-(2-(1h-indol-3-yl))-ethyl)- piperazin-2-one derivatives for use in the treatment of viral infections by viruses of the family coronaviridae
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Gutiérrez-Rodríguez, Marta, Herranz, Rosario, Gastaminza, Pablo, Garaigorta, Urtzi, Gutiérrez-Rodríguez, Marta, Herranz, Rosario, Gastaminza, Pablo, and Garaigorta, Urtzi
- Abstract
The present invention relates to new derivatives of 5-(2-(1H-indol-3-yl)ethyl-2-piperazin-2-one or pharmaceutically acceptable salts thereof and to combinations of said compounds with other active ingredients, for use in the treatment and/or prevention of viral infections by viruses from the family Coronaviridae, to the use of said compound or its combinations in the manufacture of a medicament for the treatment or prevention of said diseases and to a method of treating and/or preventing said diseases by administration of said compound or its combinations.
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- 2022
27. Study of kv4.3 channelosome: novel kchip2 ligands as pharmacological tools
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Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Consejo Superior de Investigaciones Científicas (España), Martinez-Salas, P., Viedma, Carmen, Benito-Bueno, Ángela de, Socuéllamos, Paula G., Daniel-Mozo, Miguel, Albert, Armando, Martín-Martínez, Mercedes, Valenzuela, Carmen, Gutiérrez-Rodríguez, Marta, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Consejo Superior de Investigaciones Científicas (España), Martinez-Salas, P., Viedma, Carmen, Benito-Bueno, Ángela de, Socuéllamos, Paula G., Daniel-Mozo, Miguel, Albert, Armando, Martín-Martínez, Mercedes, Valenzuela, Carmen, and Gutiérrez-Rodríguez, Marta
- Abstract
Ion channels are macromolecular complexes present in the plasma membrane and in intracellular organelles of the cells, where they play important functions. The dysfunction of these channels results in several disorders named channelopathies, which represent a challenge for study and treatment.[1] We are focused on voltage-gated potassium channels, specifically on KV4.3. Within the heart, KV4.3 channels generate the transient outward potassium current (ITO). However, ITO characteristics are only observed when KV4.3 assembles with accessory subunits as KChIP2 and DPP6. KV4.3 channelosome play a key role in atrial fibrillation (AF), the most common cardiac arrhythmia, with an estimated prevalence in the general population of 1.5–2%. However, current antiarrhythmic drugs for AF prevention have limited efficacy and considerable potential for adverse effects.[2] KChIP2 (Potassium Channel Interacting Protein 2) belongs to the calcium binding protein superfamily. It is the KChIP member predominantly expressed in heart and a key regulator of cardiac action potential duration. Novel KChIP2 ligands could be a useful pharmacological tool to understand the role of KV4.3 channelosome in AF and it could help to discover new treatments for AF. [3] In this communication, we will describe a multidisciplinary approach that, starting with a structure-based virtual screening, followed by an iterative process of synthesis/biological evaluation/docking studies, has led to the identification of new KChIP2 ligands.
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- 2022
28. New approaches for the identification of KChIP2 ligands to study the KV4.3 channelosome in atrial fibrillati
- Author
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Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Consejo Superior de Investigaciones Científicas (España), Viedma, Carmen, Martinez-Salas, P., Benito-Bueno, Ángela de, Socuéllamos, Paula G., Marín-Olivero, Irene, Daniel-Mozo, Miguel, Pérez-Lara, Ángel, González-Vera, Juan A., Orte, Angel, Albert, Armando, Martín-Martínez, Mercedes, Valenzuela, Carmen, Gutiérrez-Rodríguez, Marta, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Consejo Superior de Investigaciones Científicas (España), Viedma, Carmen, Martinez-Salas, P., Benito-Bueno, Ángela de, Socuéllamos, Paula G., Marín-Olivero, Irene, Daniel-Mozo, Miguel, Pérez-Lara, Ángel, González-Vera, Juan A., Orte, Angel, Albert, Armando, Martín-Martínez, Mercedes, Valenzuela, Carmen, and Gutiérrez-Rodríguez, Marta
- Abstract
Ion channels are macromolecular complexes present in the plasma membrane and in intracellular organelles of the cells, where they play important functions. The dysfunction of these channels results in several disorders named channelopathies, which represent a challenge for study and treatment.[1] We are focused on voltage-gated potassium channels, specifically on KV4.3. Kv4.3 is expressed in smooth muscle, heart and brain. Within the heart, Kv4.3 channels generate the transient outward potassium current (ITO). However, ITO characteristics are only observed when Kv4.3 assemble with accessory subunits as KChIP2 and DPP6. KV4.3 channelosome play a key role in atrial fibrillation (AF),the most common cardiac arrhythmia, with an estimated prevalence in the general population of 1.5–2%. However, current antiarrhythmic drugs for AF prevention have limited efficacy and considerable potential for adverse effects.[2] KChIP2 (Potassium Channel Interacting Protein 2) belongs to the calcium binding protein superfamily. It is the KChIP member predominantly expressed in heart and a key regulator of cardiac action potential duration. The identification of novel KChIP2 ligands could be useful to understand the role of KV4.3 channelosome in AF and it could help to discover new treatments for AF. [3] In this regard, structure-based virtual screening could be an important tool to accelerate the identification of novel KChIP2 ligands. In this communication, we will describe a multidisciplinary approach that, starting with a structurebased virtual screening, followed by an iterative process of synthesis/biological evaluation/docking studies, has led to the identification of new KChIP2 ligands.
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- 2022
29. Effects of IQM-110 on Kv1.5/Kvß2.1 channels
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Ministerio de Economía y Competitividad (España), Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Instituto de Salud Carlos III, Valencia, María, Benito-Bueno, Ángela de, Socuéllamos, Paula G., Bonache de Marcos, María Ángeles, Viedma, Carmen, Martín-Martínez, Mercedes, Gutiérrez-Rodríguez, Marta, Valenzuela, Carmen, Ministerio de Economía y Competitividad (España), Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Instituto de Salud Carlos III, Valencia, María, Benito-Bueno, Ángela de, Socuéllamos, Paula G., Bonache de Marcos, María Ángeles, Viedma, Carmen, Martín-Martínez, Mercedes, Gutiérrez-Rodríguez, Marta, and Valenzuela, Carmen
- Abstract
The outward potassium current IKur is the main responsible of the atrial repolarization process and it is generated by the activation of KV1.5 channels, widely expressed in human atria. It is known that mutations in KCNA5 gene, which induce both gain- and loss-of-function in KV1.5 channel, enhance atrial fibrillation susceptibility. Thus, these channels represent a pharmacological target for the development of antiarrhythmic drugs useful in the treatment of supraventricular arrhythmias. KV1.5 channels assembly with several regulatory subunits such as KVß. It has been described that KVß2.1 interacts with KV1.5. Our research group has demonstrated that the molecule IQM-110 produces electrophysiological effects on the KV1.5. The aim of the present study is to analyze the electrophysiological effects of IQM-110 on KV1.5 channels when it was expressed together with the regulatory subunit KVß2.1. In order to achieve this objective, Ltk- cell line constitutively expressing KVß2.1 and with an induced expression of KV1.5 were used. Currents were recorded using the whole-cell configuration of the patch-clamp technique. The effects of IQM-110 on KV1.5/Kvß2.1 current were concentration-dependent with an IC50 of 166¿M (n=64). This compound at 100¿M produced a time-dependent block, inducing a: 1) faster activation (¿=2.8±0.3 vs. 4.1±0.3 ms, n=10, p<0.01), 2) faster inactivation reducing the slow time constant, (¿slow=3172.6±113.8 vs. 629.1±43.8ms, n=5, p<0.001), and 3) slower deactivation kinetics, (¿slow=73.5±3.5 vs. 115.2±12.1ms and ¿fast=19.5±1.3 vs. 27.9±1.9ms, n=10, p<0.01 and p<0.5 respectively). These results are consistent with an open channel block mechanism. Finally, IQM-110 (100 ¿M) enhanced the degree of use-dependent block of the current (1.7±0.4 vs. 47.7±2.4%, n=5, p<0.001). This phenomenon was explained by a slowing of the recovery process in the presence of IQM-110 (¿r=462.6±94.9 vs. 3545.0±254.1ms, n=5, p<0.001). In summary, IQM-110 modulates KV1.5/KVß2.1 channel
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- 2022
30. Development of pharmacological tools to study the kv4.3 channelosome in atrial fibrillation
- Author
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Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Consejo Superior de Investigaciones Científicas (España), Viedma, Carmen, Sandin, P., Bonache de Marcos, María Ángeles, Martín-Martínez, Mercedes, Valenzuela, Carmen, Gutiérrez-Rodríguez, Marta, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Consejo Superior de Investigaciones Científicas (España), Viedma, Carmen, Sandin, P., Bonache de Marcos, María Ángeles, Martín-Martínez, Mercedes, Valenzuela, Carmen, and Gutiérrez-Rodríguez, Marta
- Abstract
Ion channels are macromolecular complexes present in the plasma membrane and in intracellular organelles of the cells, where they play important functions, such as smooth muscle contraction or secretion of hormones. The dysfunction of these channels results in several disorders named channelopathies, which represent a challenge for study and treatment.[1] We are focused on voltage-gated potassium channels, specifically on KV4.3 and its role in atrial fibrillation (AF). KV4.3 channel is expressed in smooth muscle, heart and brain. Its activation generates outward currents operating at subthreshold membrane potentials as recorded from myocardial cells (ITO, transient outward current). KV4.3 plays a key role in AF, the most common cardiac arrhythmia, with an estimated prevalence in the general population of 1.5–2%. However, current antiarrhythmic drugs for AF prevention have limited efficacy and considerable potential for adverse effects.[2] To reproduce the ITO currents, KV4.3 channels need to assemble with other subunits, forming channelosome. KChIPs (Potassium Channel Interacting Proteins), which belong to the calcium binding protein superfamily, forms the KV4.3 channelosome, along with other proteins.[3] To study the complex interaction of KV4.3 channelosome and the development of modulators, the interplay of different techniques is central to advance knowledge. In this regard, the development of novel KChIPs modulators and fluorescent biosensors constitutes invaluable pharmacological tools to unravel the KV4 channelosome and its role in AF.[3] In this communication, we will describe preliminary results towards the identification of new pharmacological tools to study the KChIPs/KV4 interaction.
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- 2022
31. Modulation of KV4.3-KChIP2 Channels by IQM-266: Role of DPP6 and KCNE2
- Author
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Ministerio de Ciencia e Innovación (España), European Commission, Instituto de Salud Carlos III, Consejo Superior de Investigaciones Científicas (España), Benito-Bueno, Ángela de, Socuéllamos, Paula G., Merinero, Yaiza G., Cercós, Pilar, Izquierdo García, Carolina, Daniel-Mozo, Miguel, Marín-Olivero, Irene, Pérez-Lara, Ángel, González-Vera, Juan A., Orte, Angel, Albert, Armando, Martín-Martínez, Mercedes, Gutiérrez-Rodríguez, Marta, Valenzuela, Carmen, Ministerio de Ciencia e Innovación (España), European Commission, Instituto de Salud Carlos III, Consejo Superior de Investigaciones Científicas (España), Benito-Bueno, Ángela de, Socuéllamos, Paula G., Merinero, Yaiza G., Cercós, Pilar, Izquierdo García, Carolina, Daniel-Mozo, Miguel, Marín-Olivero, Irene, Pérez-Lara, Ángel, González-Vera, Juan A., Orte, Angel, Albert, Armando, Martín-Martínez, Mercedes, Gutiérrez-Rodríguez, Marta, and Valenzuela, Carmen
- Abstract
The transient outward potassium current (Itof) is generated by the activation of KV4 chan- nels assembled with KChIP2 and other accessory subunits (DPP6 and KCNE2). To test the hypothesis that these subunits modify the channel pharmacology, we analyzed the electrophysiological effects of (3-(2-(3-phenoxyphenyl)acetamido)-2-naphthoic acid) (IQM-266), a new KChIP2 ligand, on the currents generated by KV4.3/KChIP2, KV4.3/KChIP2/DPP6 and KV4.3/KChIP2/KCNE2 channels. CHO cells were transiently transfected with cDNAs codifying for different proteins (KV4.3/KChIP2, KV4.3/KChIP2/DPP6 or KV4.3/KChIP2/KCNE2), and the potassium currents were recorded using the whole-cell patch-clamp technique. IQM-266 decreased the maximum peak of KV4.3/KChIP2, KV4.3/KChIP2/DPP6 and KV4.3/KChIP2/KCNE2 currents, slowing their time course of inactivation in a concentration-, voltage-, time- and use-dependent manner. IQM-266 produced an increase in the charge in KV4.3/KChIP2 channels that was intensified when DPP6 was present and abolished in the presence of KCNE2. IQM-266 induced an activation unblocking effect during the applica- tion of trains of pulses to cells expressing KV4.3/KChIP2 and KV4.3/KChIP2/KCNE2, but not in KV4.3/KChIP2/DPP6 channels. Overall, all these results are consistent with a preferential IQM-266 binding to an active closed state of Kv4.3/KChIP2 and Kv4.3/KChIP2/KCNE2 channels, whereas in the presence of DPP6, IQM-266 binds preferentially to an inactivated state. In conclusion, DPP6 and KCNE2 modify the pharmacological response of KV4.3/KChIP2 channels to IQM-266.
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- 2022
32. 8-metoxy-2-oxo-1,2-dihydrocyclopenta[de]quinoline derivates and use thereof as reagents for labelling lanthanide luminiscence
- Author
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Herranz, Rosario, Fueyo-González, Francisco, Gutiérrez-Rodríguez, Marta, Izquierdo García, Carolina, González Vera, Juan Antonio, Orte, Angel, Garcia-Fernández, Emilio, and Cano Cortés, María Victoria
- Subjects
Biosensores ,C07D 215/58 ,Fluorescencia ,G01N 33/52 ,G01N 21/64 ,Lantánidos ,Luminiscencia - Abstract
La presente invención se refiere al diseño y síntesis de nuevos fluoróforos con aplicación en el desarrollo de biosensores de fluorescencia, y particularmente, a derivados de 8- metoxi-2-oxo-1,2-dihidrociclopenta[de]quinolina y su aplicación como reactivos de marcaje de la luminiscencia de lantánidos. [ES], The present invention relates to the design and synthesis of new fluorophores that can be used to develop fluorescence biosensors, and particularly, to 8-methoxy-2-oxo-1,2-dihydrocyclopenta[de]quinoline derivatives and the use thereof as reagents for labelling lanthanide luminescence. [EN], Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Granada, A1 Solicitud de patente con informe sobre el estado de la técnica
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- 2022
33. IQM-PC332, a Novel DREAM Ligand with Antinociceptive Effect on Peripheral Nerve Injury-Induced Pain
- Author
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Socuéllamos, Paula G., primary, Olivos-Oré, Luis A., additional, Barahona, María Victoria, additional, Cercós, Pilar, additional, Pérez Pascual, Marta, additional, Arribas-Blázquez, Marina, additional, Naranjo, José Ramón, additional, Valenzuela, Carmen, additional, Gutiérrez-Rodríguez, Marta, additional, and Artalejo, Antonio R., additional
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- 2022
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34. Pharmacological Approaches for the Modulation of the Potassium Channel KV4.x and KChIPs
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Cercós, Pilar, Peraza, Diego A., Benito-Bueno, Ángela de, Socuéllamos, Paula G., Aziz-Nignan, A., Arrechaga-Estévez, D., Beato, E., Peña-Acevedo, E., Albert, Armando, Martín-Martínez, Mercedes, Valenzuela, Carmen, Gutiérrez-Rodríguez, Marta, Ministerio de Ciencia, Innovación y Universidades (España), Ministerio de Economía y Competitividad (España), Instituto de Salud Carlos III, Consejo Superior de Investigaciones Científicas (España), CSIC - Unidad de Recursos de Información Científica para la Investigación (URICI), and European Commission
- Subjects
KV4/KChIPs modulators ,transient outward current ,cardiovascular system ,potassium channel interacting proteins (KChIPs) ,protein–protein interactions ,A-type current ,voltage-gated potassium channels KV4 - Abstract
Ion channels are macromolecular complexes present in the plasma membrane and intracellular organelles of cells. Dysfunction of ion channels results in a group of disorders named channelopathies, which represent an extraordinary challenge for study and treatment. In this review, we will focus on voltage-gated potassium channels (KV), specifically on the KV4-family. The activation of these channels generates outward currents operating at subthreshold membrane potentials as recorded from myocardial cells (ITO, transient outward current) and from the somata of hippocampal neurons (ISA). In the heart, KV4 dysfunctions are related to Brugada syndrome, atrial fibrillation, hypertrophy, and heart failure. In hippocampus, KV4.x channelopathies are linked to schizophrenia, epilepsy, and Alzheimer’s disease. KV4.x channels need to assemble with other accessory subunits () to fully reproduce the ITO and ISA currents. Subunits affect channel gating and/or the traffic to the plasma membrane, and their dysfunctions may influence channel pharmacology. Among KV4 regulatory subunits, this review aims to analyze the KV4/KChIPs interaction and the effect of small molecule KChIP ligands in the A-type currents generated by the modulation of the KV4/KChIP channel complex. Knowledge gained from structural and functional studies using activators or inhibitors of the potassium current mediated by KV4/KChIPs will better help understand the underlying mechanism involving KV4-mediated-channelopathies, establishing the foundations for drug discovery, and hence their treatments., This research was funded by Ministerio de Ciencia e Innovación (MICIU) Spain SAF2016- 75021-R and PID2019-104366RB-C21 (to CV), RTI2018-097189-B-C22 (to MMM), PID2019-104366RBC22 (to MG-R); the Instituto de Salud Carlos III CIBERCV program CB/11/00222 (to CV); and the Consejo Superior de Investigaciones Científicas grants: PIE 201820E104, 2019AEP148 (to CV), and 201880E109 (to MMM and MG-R). The cost of this publication was paid in part by funds from the European Fund for Economic and Regional Development (FEDER). PC held a postgraduate FPI fellowship from the Spanish Ministry of Economy, Industry, and Competitivity (MINECO). DAP held CSIC contracts. AdB-B holds a MICIU predoctoral contract (BES-2017-080184). PGS holds a MICIU predoctoral contract FPU2017/02731. AAN, DAE, EB, and EPA were sponsored by CUNY Research Scholars Program (CRSP) and Collegiate Science Technology Entry Program (CSTEP). YR is grateful to the Hostos Office of Academic Affairs for providing travel awards and the OpenEye Scientific Software for providing free academic licenses. We acknowledge support of the publication fee by the CSIC Open Access Publication Support Initiative through its Unit of Information Resources for Research (URICI).
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- 2021
35. Dérivés de 5-(2-(1h-indol-3-yl))-éthyl)-pipérazin-2-one destinés à être utilisés dans le traitement d'infections virales par des virus de la famille des coronaviridae
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Gutiérrez-Rodríguez, Marta, Herranz, Rosario, Gastaminza, Pablo, and Garaigorta, Urtzi
- Abstract
[EN] The present invention relates to new derivatives of 5-(2-(1H-indol-3-yl)ethyl-2- piperazin-2-one or pharmaceutically acceptable salts thereof and to combinations of said compounds with other active ingredients, for use in the treatment and/or prevention of viral infections by viruses from the family Coronaviridae, to the use of said compound or its combinations in the manufacture of a medicament for the treatment or prevention of said diseases and to a method of treating and/or preventing said diseases by administration of said compound or its combinations., [FR] La présente invention concerne de nouveaux dérivés de 5-(2-(1H-indol-3-yl)éthyl-2-pipérazin-2-one ou des sels pharmaceutiquement acceptables de ceux-ci et des combinaisons de ces composés avec d'autres principes actifs, destinés à être utilisés dans le traitement et/ou la prévention d'infections virales par des virus de la famille des Coronaviridae, l'utilisation dudit composé ou de ses combinaisons dans la fabrication d'un médicament pour le traitement ou la prévention desdites maladies et un procédé de traitement et/ou de prévention desdites maladies par administration dudit composé ou de ses combinaisons., Consejo Superior de Investigaciones Científicas, A1 Solicitud de patente con informe sobre el estado de la técnica
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- 2020
36. Composés destinés à être utilisés dans le traitement des infections virales par un virus de la famille des coronaviridae
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Gutiérrez-Rodríguez, Marta, Izquierdo García, Carolina, Gastaminza, Pablo, and Garaigorta, Urtzi
- Abstract
[EN] The present invention relates to new derivatives of 2-phenyl-quinoline-4-carboxylic acid or pharmaceutically acceptable salt thereof and to combination of said compounds with other active ingredients, for use in the treatment and/or prevention of viral infections by virus from the family Coronaviridae, to the use of said compound or its combinations in the manufacture of a medicament for the treatment or prevention of said diseases and to a method of treating and/or preventing said diseases by administration of said compound or its combinations., [FR] La présente invention concerne de nouveaux dérivés d'acide 2-phényl-quinoléine-4-carboxylique ou un sel pharmaceutiquement acceptable de ceux-ci et une combinaison de ces composés avec d'autres principes actifs, destinés à être utilisés dans le traitement et/ou la prévention d'infections virales par un virus de la famille des coronaviridae, l'utilisation dudit composé ou de ses combinaisons dans la fabrication d'un médicament pour le traitement ou la prévention desdites maladies et un procédé de traitement et/ou de prévention desdites maladies par administration dudit composé ou de ses combinaisons., Consejo Superior de Investigaciones Científicas, A1 Solicitud de patente con informe sobre el estado de la técnica
- Published
- 2020
37. “Have the Lambs Stopped Screaming?”: Childhood Trauma and Gender Identity in The Silence of the Lambs
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Valiente Calleja, Elena, Gutiérrez Rodríguez, Marta María, Universidad de Valladolid. Facultad de Filosofía y Letras, Valiente Calleja, Elena, Gutiérrez Rodríguez, Marta María, and Universidad de Valladolid. Facultad de Filosofía y Letras
- Abstract
Since Freud's first publications on psychoanalysis, society has reacted with amazement to his theories. Taking people's childhood as a starting point and a critical phase of development, Freud analyses people's unconscious to understand the human personality. In addition to considering Freudian psychoanalysis as an important point for this undergraduate dissertation, gender identity will also be studied through the characters and the society in which they live. This is because gender identity has always been a taboo concept in many cultures and its study is important to understand the injustices and obstacles that certain communities have suffered. Hence, this paper aims to analyse the connection between childhood trauma and gender identity in the characters of The Silence of the Lambs (1988) by Thomas Harris to establish that the trauma that occurred in their past is directly connected to discrimination and gender characterization in their current lives., Desde las primeras publicaciones de Freud sobre el psicoanálisis, la sociedad ha reaccionado con asombro ante sus teorías. Tomando la infancia de las personas como punto de partida y fase crítica del desarrollo, Freud analiza el subconsciente de las personas para comprender la personalidad humana. Además de considerar el psicoanálisis freudiano como punto importante para este Trabajo de fin de Grado, también se estudiará la identidad de género a través de los personajes y la sociedad en la que viven. Esto se debe a que la identidad de género siempre ha sido un concepto tabú en muchas culturas y su estudio es importante para entender las injusticias y obstáculos que han sufrido ciertas comunidades. Por tanto, este trabajo pretende analizar la conexión entre el trauma de la infancia y la identidad de género en los personajes de El Silencio de los Corderos (1988), por Thomas Harris, para establecer que el trauma ocurrido en su pasado está directamente conectado con la discriminación y la personificación de género en sus vidas actuales., Departamento de Filología Inglesa, Grado en Estudios Ingleses
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- 2021
38. Derivados de 8-metoxi-2-oxo-1,2-dihidrociclopenta[de]quinolina y su aplicación como reactivos de marcaje de la luminiscencia de lantánidos
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Herranz, Rosario, Fueyo-González, Francisco, Gutiérrez-Rodríguez, Marta, Izquierdo García, Carolina, González-Vera, Juan A., Orte, Angel, García-Fernández, Emilio, Cano Cortés, María Victoria, Herranz, Rosario, Fueyo-González, Francisco, Gutiérrez-Rodríguez, Marta, Izquierdo García, Carolina, González-Vera, Juan A., Orte, Angel, García-Fernández, Emilio, and Cano Cortés, María Victoria
- Abstract
La presente invención se refiere al diseño y síntesis de nuevos fluoróforos con aplicación en el desarrollo de biosensores de fluorescencia, y particularmente, a derivados de 8- metoxi-2-oxo-1,2-dihidrociclopenta[de]quinolina y su aplicación como reactivos de marcaje de la luminiscencia de lantánidos. [ES], The present invention relates to the design and synthesis of new fluorophores that can be used to develop fluorescence biosensors, and particularly, to 8-methoxy-2-oxo-1,2-dihydrocyclopenta[de]quinoline derivatives and the use thereof as reagents for labelling lanthanide luminescence. [EN]
- Published
- 2021
39. Plataforma Salud Global del CSIC. Un año de investigación de la covid-19
- Author
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Gabinete de Presidencia CSIC, Departamento de Comunicación CSIC, Comas, Iñaki, Ramasco, José J., Bartomeus, Frederic, Sánchez Moragas, Gloria, Lagarón Cabello, José María, Revuelta, Julia, Fuente, Jesús M. de la, Fernández Sánchez, César, Marco, María Pilar, Lechuga, Laura M., Gómez Álvarez-Arenas, Tomás, Camacho Sosa-Días, Jorge, Reyburn, H. T., Valés-Gómez, Mar, Rodríguez-Frade, José Miguel, Gastaminza, Pablo, Garaigorta, Urtzi, Gil, Carmen, Pérez de Vega, M. Jesús, Gutiérrez-Rodríguez, Marta, Fernández, Luis Ángel, Vega, María Cristina, Botella Asunción, Pablo, Thomson, Timothy M., Esteban, Mariano, García-Arriaza, Juan, Enjuanes Sánchez, Luis, Solá Gurpegui, Isabel, Larraga, Vicente, Ramiro Fariñas, Diego, Pino, Eloísa del, Moscoso, Javier, Gabinete de Presidencia CSIC, Departamento de Comunicación CSIC, Comas, Iñaki, Ramasco, José J., Bartomeus, Frederic, Sánchez Moragas, Gloria, Lagarón Cabello, José María, Revuelta, Julia, Fuente, Jesús M. de la, Fernández Sánchez, César, Marco, María Pilar, Lechuga, Laura M., Gómez Álvarez-Arenas, Tomás, Camacho Sosa-Días, Jorge, Reyburn, H. T., Valés-Gómez, Mar, Rodríguez-Frade, José Miguel, Gastaminza, Pablo, Garaigorta, Urtzi, Gil, Carmen, Pérez de Vega, M. Jesús, Gutiérrez-Rodríguez, Marta, Fernández, Luis Ángel, Vega, María Cristina, Botella Asunción, Pablo, Thomson, Timothy M., Esteban, Mariano, García-Arriaza, Juan, Enjuanes Sánchez, Luis, Solá Gurpegui, Isabel, Larraga, Vicente, Ramiro Fariñas, Diego, Pino, Eloísa del, and Moscoso, Javier
- Abstract
La irrupción del coronavirus SARS-CoV-2 y de la pandemia de covid-19 ha planteado un enorme desafío a la ciencia. Buscar soluciones a un virus que ha causado, hasta el momento, 130 millones de infectados y ha provocado casi 3 millones de muertes. Para desentrañar las claves de esta nueva amenaza global, el Consejo Superior de Investigaciones Científicas, el CSIC, puso en marcha en marzo de 2020 la Plataforma Temática Interdisciplinar Salud Global. Su objetivo es coordinar a cientos de equipos de diversas disciplinas en busca de soluciones a la pandemia, creando nuevas redes de colaboración con organismos públicos de investigación, universidades, la clínica y el sector empresarial. La plataforma ha reunido a expertos de la investigación en biomedicina (virólogos, inmunólogos, genetistas y biotecnólogos), junto a químicos y físicos, además de sociólogos y demógrafos. Su trabajo es determinar las características del virus y de la covid-19, y diseñar estrategias que permitan hacer frente a esta y futuras pandemias. Tras un año de investigación, la Plataforma Salud Global ha obtenido conocimientos fundamentales en todos los aspectos de la pandemia: prevención, contención, diagnóstico, terapia y vacunas, e impacto social.
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- 2021
40. Pharmacological Approaches for the Modulation of the Potassium Channel KV4.x and KChIPs
- Author
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Ministerio de Ciencia, Innovación y Universidades (España), Ministerio de Economía y Competitividad (España), Instituto de Salud Carlos III, Consejo Superior de Investigaciones Científicas (España), CSIC - Unidad de Recursos de Información Científica para la Investigación (URICI), European Commission, Cercós, Pilar, Peraza, Diego A., Benito-Bueno, Ángela de, Socuéllamos, Paula G., Aziz-Nignan, A., Arrechaga-Estévez, D., Beato, E., Peña-Acevedo, E., Albert, Armando, Martín-Martínez, Mercedes, Valenzuela, Carmen, Gutiérrez-Rodríguez, Marta, Ministerio de Ciencia, Innovación y Universidades (España), Ministerio de Economía y Competitividad (España), Instituto de Salud Carlos III, Consejo Superior de Investigaciones Científicas (España), CSIC - Unidad de Recursos de Información Científica para la Investigación (URICI), European Commission, Cercós, Pilar, Peraza, Diego A., Benito-Bueno, Ángela de, Socuéllamos, Paula G., Aziz-Nignan, A., Arrechaga-Estévez, D., Beato, E., Peña-Acevedo, E., Albert, Armando, Martín-Martínez, Mercedes, Valenzuela, Carmen, and Gutiérrez-Rodríguez, Marta
- Abstract
Ion channels are macromolecular complexes present in the plasma membrane and intracellular organelles of cells. Dysfunction of ion channels results in a group of disorders named channelopathies, which represent an extraordinary challenge for study and treatment. In this review, we will focus on voltage-gated potassium channels (KV), specifically on the KV4-family. The activation of these channels generates outward currents operating at subthreshold membrane potentials as recorded from myocardial cells (ITO, transient outward current) and from the somata of hippocampal neurons (ISA). In the heart, KV4 dysfunctions are related to Brugada syndrome, atrial fibrillation, hypertrophy, and heart failure. In hippocampus, KV4.x channelopathies are linked to schizophrenia, epilepsy, and Alzheimer’s disease. KV4.x channels need to assemble with other accessory subunits () to fully reproduce the ITO and ISA currents. Subunits affect channel gating and/or the traffic to the plasma membrane, and their dysfunctions may influence channel pharmacology. Among KV4 regulatory subunits, this review aims to analyze the KV4/KChIPs interaction and the effect of small molecule KChIP ligands in the A-type currents generated by the modulation of the KV4/KChIP channel complex. Knowledge gained from structural and functional studies using activators or inhibitors of the potassium current mediated by KV4/KChIPs will better help understand the underlying mechanism involving KV4-mediated-channelopathies, establishing the foundations for drug discovery, and hence their treatments.
- Published
- 2021
41. A generic building block for C- and N-terminal protein-labeling and protein-immobilization
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Watzke, Anja, Gutierrez-Rodriguez, Marta, Köhn, Maja, Wacker, Ron, Schroeder, Hendrik, Breinbauer, Rolf, Kuhlmann, Jürgen, Alexandrov, Kirill, Niemeyer, Christof M., Goody, Roger S., and Waldmann, Herbert
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- 2006
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- View/download PDF
42. KCHIP2 modulator compounds and their use for the treatment of cardiovascular diseases
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Gutiérrez-Rodríguez, Marta, Valenzuela, Carmen, Martín-Martínez, Mercedes, Delgado, Carmen, and Naranjo, José Ramón
- Subjects
humanities - Abstract
The present invention relates to a family of compounds which are capable of modulating KChIP proteins and are therefore useful for the treatment of heart diseases in which the expression levels of this protein are abnormal. These compounds have the following general formula: (I)., Consejo Superior de Investigaciones Científicas (España), Universidad Autónoma de Madrid, A1 Solicitud de patente con informe sobre el estado de la técnica
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- 2019
43. Compuestos moduladores del sensor neuronal de calcio DREAM y sus usos terapéuticos
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Gutiérrez-Rodríguez, Marta, Cercós, Pilar, Martín-Martínez, Mercedes, Herranz, Rosario, García-López, M. Teresa, Valenzuela, Carmen, Naranjo, José Ramón, Dopazo Santos, José Manuel, González Pérez, Paz, Gutiérrez-Rodríguez, Marta, Cercós, Pilar, Martín-Martínez, Mercedes, Herranz, Rosario, García-López, M. Teresa, Valenzuela, Carmen, Naranjo, José Ramón, Dopazo Santos, José Manuel, and González Pérez, Paz
- Abstract
La presente invención se refiere a un grupo de compuestos con un núcleo estructural derivado de fenilacetamida con la siguiente fórmula (I): que presentan capacidad de modulación del sensor neuronal de calcio DREAM, por lo que la presente invención también se refiere al uso de estos compuestos para el tratamiento o prevención de trastornos o enfermedades donde los niveles de DREAM están por encima o por debajo de los niveles considerados fisiológicamente normales. [ES], The present invention relates to a group of compounds with a structural nucleus derived from phenylacetamide, having the following formula (I): that can modulate the DREAM neuronal calcium sensor. Consequently, the present invention also relates to the use of these compounds for the treatment or prevention of disorders or diseases in which DREAM levels are above or below physiologically normal levels. [EN]
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- 2020
44. KCHIP2 modulator compounds and their use for the treatment of cardiovascular diseases
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Gutiérrez-Rodríguez, Marta, Valenzuela, Carmen, Martín-Martínez, Mercedes, Delgado, Carmen, Naranjo, José Ramón, Gutiérrez-Rodríguez, Marta, Valenzuela, Carmen, Martín-Martínez, Mercedes, Delgado, Carmen, and Naranjo, José Ramón
- Abstract
The present invention relates to a family of compounds which are capable of modulating KChIP proteins and are therefore useful for the treatment of heart diseases in which the expression levels of this protein are abnormal. These compounds have the following general formula: (I).
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- 2020
45. Improved synthesis of a [4.4]-spirolactam β-turn mimetic as surrogate of the didemnin side chain dipeptide Pro- N-Me- d-Leu
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Gutiérrez-Rodrı́guez, Marta, Garcı́a-López, M.Teresa, and Herranz, Rosario
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- 2004
- Full Text
- View/download PDF
46. IQM-PC332, a novel DREAM ligand with analgesic effect on experimental peripheral nerve injury- and diabetes-induced pain
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Socuéllamos, Paula G., Cercós, Pilar, Olivos-Oré, Luis Alcides, Barahona, María Victoria, Bosch, Gerardo, Naranjo, José Ramón, Valenzuela, Carmen, Gutiérrez-Rodríguez, Marta, Artalejo, Antonio R., Ministerio de Economía y Competitividad (España), Consejo Superior de Investigaciones Científicas (España), and Universidad Complutense de Madrid
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KChIP3 ,IQM-PC332 ,DREAM ,Calsenilin ,Neuropathic pain - Abstract
Resumen del trabajo presentado al VII Congreso Red Española Canales Iónicos, celebrado en Cáceres del 15 al 17 de mayo de 2019., Neuropathic pain is a form of chronic pain arising from damage to the nerves that sense, transmit or process information about environmental stimuli. Given its growing prevalence and common refractoriness to conventional analgesics, the development of new drugs with pain relief effect constitute a prominent clinical need. In this respect, drugs that reduce activity of sensory neurons by modulating ion channels hold the promise to become effective analgesics. Here we have used two models of neuropathic pain, namely the chronic constriction injury of the sciatic nerve (CCI) and the streptozotocin-induced diabetic neuropathy, to evaluate the mechanical antiallodynic effect of IQM-PC332, a novel Downstream Regulatory Element Antagonist Modulator (DREAM)/KChIP3/calsenilin ligand potentially affecting DREAM modulated ionic currents like potassium IA and ICav. IQM-PC332 exerted a mechanical antiallodynic effect following intraperitoneal (I.P; DE50 of 0.06 μg/kg, Emax of 65%) and intraplantar (DE50 of 0.24 mg, Emax of 68%) administration in the CCI, model. Likewise, IQM-PC332 2 μg/kg I.P. significantly reduced mechanical allodynia in diabetic animals. Interestingly, no effect of IQM-PC332 on glucose levels from both CCI and diabetic animal could be observed at analgesic doses. The effects of IQM-PC332 on INav, ICav, IA, and the electrical excitability in neurons isolated from dorsal root ganglia (L4-L6; DRG) were also studied with the patch-clamp technique. IQM-PC332 reduced peak amplitudes of ICav from both Control and CCI animals with CI50 (@ +10 mV) of 78 μM y 40 μM, respectively. At variance, IQM-PC332 did not exert any effect on INav in the concentration range from 0.01 to 50 μM. PC332 10 μM also inhibited IA in DRG neurons from CCI animals, this effect being larger with membrane depolarization (≈ 50% inhibition at -10 mV). Interestingly, in about 55% of the neurons, IQM-PC332 slowed inactivation of IA. In accordance with its effects on ion currents, IQM-PC332 10 μM reduced the time to the first action potential (AP) evoked by current injection while decreasing the amplitude and duration of the after hyperpolarization that followed after APs within a train. However, no clear effect on instantaneous frequency of AP could be observed. It is suggested that inhibition of Ca2+ entry through Cav channels coupled to neurotransmitter release from peripheral and central terminals of nociceptive neurons may underlie the analgesic effect of IQM-PC332., Supported by Universidad Complutense, grant PR75/18-21593 to ARA, SAF2016-75021-R and PIE201820E104 to CV, BFU2015-67284-R and PIE201880E109 (CSIC grant) to MGR.
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- 2019
47. Chemical tolls to modulate kchip3 signaling
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Izquierdo García, Carolina, Peraza, Diego A., Cercós, Pilar, Miaja, Pablo, Merinero, Yaiza G., Lagartera, L., Socuéllamos, Paula G., Martín-Martínez, Mercedes, Olivos-Oré, Luis Alcides, Naranjo, José Ramón, Artalejo, Antonio R., Valenzuela, Carmen, and Gutiérrez-Rodríguez, Marta
- Abstract
Trabajo presentado en el 19th Meeting SEQT, celebrado en Vitoria-Gasteiz (España) del 8 al 11 de julio de 2019., DREAM (Downstream Regulatory Element Antagonist Modulator), also known as KChIP-3 or calsenilin, is a multifunctional calcium binding protein that controls the expression level and/or the activity of several proteins related to calcium homeostasis, neuronal excitability and neuronal survival. As an auxiliary protein in the plasma membrane, DREAM interacts with KV4 potassium channels, L- and T-type voltage-dependent calcium channels, NMDA receptors, presenilins and the transcriptor factor ATF6.1 The interaction between DREAM and KV4 potassium channels regulates of A-type outward potassium currents (IA) that is responsible of the fast repolarization of neuron action potentials and frequency of firing.2 Using a multidisciplinary approach that involves drug design, organic chemistry, surface plasmon resonance assays, electrophysiological recordings of KV4.3/DREAM channels, and IA recordings in rat dorsal root ganglion neurons, we have identified IQM-266.3 IQM-266 slows the inactivation kinetics, and this effect may explain why at concentrations lower than the IC50, IQM-266 augments the efflux of potassium ions resulting in an increase of the charge (activating effect). This effect could be the basis of a promising therapeutic strategy for the treatment of certain neuronal pathologies (epilepsy, Alzheimer disease or ataxia), in which a downregulation of KV4.3 or DREAM has been demonstrated.4 IQM-266 also modulated IA from rat DRG neurons. Overall, IQM-266 constitutes a novel small chemical tool suitable to modulate KV4.3 channels in native systems, that might allow a better understanding of DREAM physiological roles, as well as modulation of neuronal IA current in pathological processes.
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- 2019
48. Fine-tuning DREAM signaling using chemical tools for neurodegenerative disease treatment
- Author
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Gutiérrez-Rodríguez, Marta, Cercós, Pilar, Izquierdo García, Carolina, Peraza, Diego A., López-Hurtado, Alejandro, González Pérez, Paz, Dopazo, Xose M., Herranz, Rosario, González, Teresa, Mellström, Britt, Martín-Martínez, Mercedes, Naranjo, José Ramón, Valenzuela, Carmen, Agencia Estatal de Investigación (España), Ministerio de Economía, Industria y Competitividad (España), Ministerio de Economía y Competitividad (España), Ministerio de Ciencia, Innovación y Universidades (España), Instituto de Salud Carlos III, European Commission, Comunidad de Madrid, and Consejo Superior de Investigaciones Científicas (España)
- Abstract
Resumen del trabajo presentado al 6th European Chemical Biology Symposium ECBS/LS-EuChemS, celebrado en Madrid (España) del 3 al 5 de abril de 2019., DREAM (Downstream Regulatory Element Antagonist Modulator), also known as KChIP-3 or calsenilin, is a multifunctional calcium binding protein that controls the expression level and/or the activity of several proteins related to calcium homeostasis, neuronal excitability and neuronal survival. As an auxiliary protein in the plasma membrane, DREAM interacts with, and regulates, the gating of KV4 potassium channels, L- and T-type voltage-dependent calcium channels, NMDA receptors and the transcriptor factor ATF6, which is involved in the unfolding protein response machinary. Considering that altered neuronal calcium homeostasis and the accumulation of poorly folded proteins are common features of many neurodegenerative pathologies, the DREAM modulation could open new avenues for the treatment of neurodegenerative diseases. We recently showed that reduced DREAM expression or blockade of DREAM activity by repaglinide is neuroprotective in Huntington's disease (HD)[1]. However, up to now, only three DREAM binding molecules have been identified. Hence, there is a clear need for the development of chemical tools to modulate and characterize DREAM activity and its interactions. In this communication we will report the identification of novel DREAM modulators by following a multidisciplinary strategy that involves structure-based design, organic chemistry, site-directed mutagenesis and in vitro and in vivo experiments. Our findings open a new avenue in the search of effective treatments of neurodegenerative diseases., Spanish Ministery of Economy, Industry and Competitivity (AEI-FEDER, EU grants): BFU2015-67284-R, SAF2017-89554-R, SAF2016-75021-R, SAF2015-66275-C2-2-R; Instituto de Salud Carlos III CIBERNED and CIBERCV programs; the Madrid regional government/Neurodegmodels; and CSIC PIE 201580E073.
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- 2019
49. Electrophysiological effects of IQM-266 on KV1.5 channels
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Benito-Bueno, Ángela de, Socuéllamos, Paula G., Cercós, Pilar, Sánchez, Sara A., Peraza, Diego A., Gutiérrez-Rodríguez, Marta, Valenzuela, Carmen, Ministerio de Economía y Competitividad (España), and Consejo Superior de Investigaciones Científicas (España)
- Subjects
KV1.5 ,IQM-266 ,KChIP2 ,K+ channels - Abstract
Resumen del trabajo presentado al VII Congreso Red Española Canales Iónicos, celebrado en Cáceres del 15 al 17 de mayo de 2019., The outward potassium current IKur is the main responsible of the atrial repolarization process and it is generated by the activation of KV1.5 channels, widely expressed in human atria. It is known that mutations in KCNA5 gene, which induce both gain- and loss-of-function in KV1.5 channel, enhance atrial fibrillation susceptibility. Thus, these channels represent a pharmacological target for the development of antiarrhythmic drugs useful in the treatment of supraventricular arrhythmias. KV1.5 channels assembly with several regulatory subunits such as KVβ and KChIPs (KV Channel Interacting Proteins). It has been described that KChIP2 physically interacts with KV1.5 and reduces KV1.5 cell surface expression levels. Our research group has demonstrated that IQM-266 inhibits the current generated by the activation of KV4.3 and KV4.3/KChIP2, being the effects more marked when KChIP2 is present. The aim of the present study is to analyze the effects of IQM-266 on KV1.5 channels. In order to achieve these objectives, HEK293 cells transiently expressing KV1.5 were used. Currents were recorded using the whole-cell configuration of the patch-clamp technique. The effects of IQM-266 on KV1.5 currents were concentration-dependent with an IC50 of 11 μM (n=24). Block induced by IQM-266 (20 μM) sharply increased within the membrane voltage range of the channel activation, arising a maximum degree of block at +20 mV that remained constant at more positive membrane potentials. This compound at 20 μM produced a timedependent block, inducing a: 1) faster inactivation (τ = 305.8±47.6 ms vs. 168.0±13.4 ms, in the absence and in the presence of IQM-266, respectively, n=9, p, Supported by SAF2016-75021-R and CSIC PIE201820E104 to CV, BFU2015-67284-R and CSIC PIE201880E109 to MGR.
- Published
- 2019
50. Todos/as sumamos: Proyecto de intervención dirigido al empleo de personas con discapacidad
- Author
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Gutiérrez Rodríguez, Marta, Rodríguez Suárez, Guacimara, and Grado En Trabajo Social
- Subjects
capacidades ,calidad de vida ,Discapacidad ,inserción laboral ,autonomía personal - Published
- 2019
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