21 results on '"Onofri, Chiara"'
Search Results
2. Not the one, but the only one: about Cannabis cryptic virus in plants showing ‘hemp streak’ disease symptoms
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Righetti, Laura, Paris, Roberta, Ratti, Claudio, Calassanzio, Matteo, Onofri, Chiara, Calzolari, Davide, Menzel, Wulf, Knierim, Dennis, Magagnini, Gianmaria, Pacifico, Daniela, and Grassi, Gianpaolo
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- 2018
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3. Sequence heterogeneity of cannabidiolic- and tetrahydrocannabinolic acid-synthase in Cannabis sativa L. and its relationship with chemical phenotype
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Onofri, Chiara, de Meijer, Etienne P.M., and Mandolino, Giuseppe
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- 2015
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4. Early transcriptional changes in Beta vulgaris in response to low temperature
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Moliterni, Vita Maria Cristiana, Paris, Roberta, Onofri, Chiara, Orrù, Luigi, Cattivelli, Luigi, Pacifico, Daniela, Avanzato, Carla, Ferrarini, Alberto, Delledonne, Massimo, and Mandolino, Giuseppe
- Published
- 2015
5. Rituximab induces different but overlapping sets of genes in human B-lymphoma cell lines
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Cittera, Elena, Onofri, Chiara, D’Apolito, Maria, Cartron, Guillaume, Cazzaniga, Giovanni, Zelante, Leopoldo, Paolucci, Paolo, Biondi, Andrea, Introna, Martino, and Golay, Josée
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- 2005
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6. Intrapituitary Expression and Regulation of the gp130 Cytokine Interleukin-6 and Its Implication in Pituitary Physiology and Pathophysiology
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Renner, Ulrich, De Santana, Eliane Correa, Gerez, Juan, Fröhlich, Bianca, Haedo, Mariana, Pereda, Marcelo Paez, Onofri, Chiara, Stalla, Günter K., and Arzt, Eduardo
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- 2009
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7. Reduced Expression of the Cytokine Transducer gp130 Inhibits Hormone Secretion, Cell Growth, and Tumor Development of Pituitary Lactosomatotrophic GH3 Cells
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Castro, Carolina Perez, Giacomini, Damiana, Nagashima, Alberto Carbia, Onofri, Chiara, Graciarena, Mariana, Kobayashi, Ken, Páez-Pereda, Marcelo, Renner, Ulrich, Stalla, Günter K., and Arzt, Eduardo
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- 2003
8. Do temperament and defense styles characterize migraine patients?
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Sharkh, S., Verdolini, Norma, DE GIORGIO, Giuseppina, Onofri, Chiara, Dennis, JOHN LAWRENCE, Firenze, Caterina, Moretti, Patrizia, and Quartesan, Roberto
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turning against self ,Novelty seeking alexithymia ,pensee operatoire ,reversal - Published
- 2011
9. Comorbidity eating disorders and affective disorders: out and in patients
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Moretti, Patrizia, Onofri, Chiara, and Anastasi, Serena
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Comorbidity ,eating disorders ,affective disorders - Published
- 2010
10. Localization and functional study of VEGF receptors in normal and adenomatous pituitary: evidence for a non-angiogenic role of VEGF
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Onofri, Chiara
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FOS: Biological sciences ,embryonic structures ,cardiovascular system ,VEGF, VEGF receptors, pituitary, pituitary adenomas, proliferation - Abstract
The role of members of the Vascular Endothelial Growth Factor (VEGF) family and their receptors in angiogenesis, progression and pathophysiology of pituitary tumours is still poorly understood. In the present work, the expression and localization of the angiogenic factor VEGF-A and the lymphangiogenic factor VEGF-C, as well as VEGF receptors (VEGFR-1, VEGFR-2, VEGFR-3 and neuropilin-1), have been studied in normal and tumoural pituitary tissue and in transformed pituitary tumour cell lines. In addition, the role and mechanism of action of VEGFR-1 ligands have been investigated in normal and transformed rat pituitary cells. Immunohistochemical investigations in 3 normal human adenohypophyses showed that VEGFR-2 and neuropilin-1 were localized in blood vessel endothelial cells, while VEGFR-1 was found in endocrine cells. VEGF-A significantly induced ACTH and prolactin secretion in normal rat pituitary cell cultures, indicating a role of VEGF-A and VEGFR-1 in the regulation of the secretion of these pituitary hormones. In contrast, VEGFR-2 and its co-receptor neuropilin-1 may be needed to maintain optimal intrapituitary vascularization and blood vessel permeability. Although no lymphatic vessels were identified in normal adenohypophysis, the lymphangiogenic factor VEGF-C and its receptor VEGFR-3 were detected by immunohistochemistry, suggesting the involvement of the VEGF-C/VEGFR-3 system, usually implicated in lymphangiogenesis, in the maintenance of blood vessel permeability. The expression of VEGFR-1, VEGFR-2 and neuropilin-1 in a series of 39 pituitary adenomas reflected the same immunohistochemical localization pattern as observed in the normal adenohypophysis tissue. It was highly heterogeneous and mostly no significant correlation with different parameters, such as: tumour type, tumour grade, proliferation index (PI) and blood vessel number, was noticed. Only the absence of VEGFR-2 and neuropilin-1 correlated with a low PI, suggesting a role of these two receptors in increasing vessel permeability and consequently the availability of nutrients and oxygen for tumour cells. Functional studies, with the VEGFR-1-positive somatotrophinoma rat pituitary cell line MtT-S, showed that VEGF-A and the VEGFR-1 specific ligand PlGF, significantly stimulated the cell proliferation, through the activation of PI3K pathway and the induction of the anti-apoptotic factor Bcl-2 and the cell cycle promoter cyclin D1. VEGF-C immunostaining was detected in endocrine tumour cells of 10 adenomas and VEGFR-3 immunopositive vessels were found in 22 tumours, even if only 9 of them were positive for both VEGFR-3 and LYVE-1 (specific lymphatic vessel marker), suggesting that the VEGF-C/VEGFR-3 system may have a role in the regulation of tumour angiogenesis of pituitary adenomas, rather than in lymphangiogenesis, as already shown in other tumour types. In conclusion, the results of the present study provide strong evidence that VEGF may not only have a role in regulating pituitary adenoma neovascularization but also, through VEGFR-1, may affect pituitary adenoma pathophysiology by modulating growth, cell cycle progression and survival of the adenoma cells.
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- 2006
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11. Molecular and biochemical characterization of a potato collection with contrasting tuber carotenoid content.
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Sulli, Maria, Mandolino, Giuseppe, Sturaro, Monica, Onofri, Chiara, Diretto, Gianfranco, Parisi, Bruno, and Giuliano, Giovanni
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COMPOSITION of potatoes ,TUBERS ,CAROTENOID content in vegetables ,PLANT molecular biology ,VEGETATION classification - Abstract
After wheat and rice, potato is the third most important staple food worldwide. A collection of ten tetraploid (Solanum tuberosum) and diploid (S. phureja and S. chacoense) genotypes with contrasting carotenoid content was subjected to molecular characterization with respect to candidate carotenoid loci and metabolic profiling using LC-HRMS. Irrespective of ploidy and taxonomy, tubers of these genotypes fell into three groups: yellow-fleshed, characterized by high levels of epoxy-xanthophylls and xanthophyll esters and by the presence of at least one copy of a dominant allele of the β-Carotene Hydroxylase 2 (CHY2) gene; white-fleshed, characterized by low carotenoid levels and by the presence of recessive chy2 alleles; and orange-fleshed, characterized by high levels of zeaxanthin but low levels of xanthophyll esters, and homozygosity for a Zeaxanthin Epoxidase (ZEP) recessive allele. Novel CHY2 and ZEP alleles were identified in the collection. Multivariate analysis identified several groups of co-regulated non-polar compounds, and resulted in the grouping of the genotypes according to flesh color, suggesting that extensive cross-talk exists between the carotenoid pathway and other metabolite pathways in tubers. Postharvest traits like tuber dormancy and weight loss during storage showed little correlation with tuber carotenoid content, with the exception of zeaxanthin and its esters. Other tuber metabolites, such as glucose, monogalactosyldiacyglycerol (a glycolipid), or suberin precursors, showed instead significant correlations with both traits. [ABSTRACT FROM AUTHOR]
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- 2017
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12. Influence of Organic Farming on the Potato Transcriptome.
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Pacifico, Daniela, Onofri, Chiara, Parisi, Bruno, Ostano, Paola, and Mandolino, Giuseppe
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Organic agriculture sparks a lively debate on its potential health and environmental benefits. Comparative studies often investigate the response of crops to organic farming through targeted approaches and within a limited experimental work. To clarify this issue, the transcriptomic profile of a cultivar of the potato grown for two years under organic and conventional farming was compared with the profile of an experimental clone grown in the same location of Southern Italy for one year. Transcriptomic raw data were obtained through Potato Oligo Chip Initiative (POCI) microarrays and were processed using unsupervised coupling multivariate statistical analysis and bioinformatics (MapMan software). One-hundred-forty-four genes showed the same expression in both years, and 113 showed the same expression in both genotypes. Their functional characterization revealed the strong involvement of the farming system in metabolism associated with the nutritional aspects of organic tubers (e.g., phenylpropanoid, flavonoid, glycoalcaloid, asparagine, ascorbic acid). Moreover, further investigation showed that eight of 42,034 features exhibited the same trend of expression irrespective of the year and genotype, making them possible candidates as markers of traceability. This paper raises the issue regarding the choice of genotype in organic management and the relevance of assessing seasonal conditions effects when studying the effects of organic cultivation on tuber metabolism. [ABSTRACT FROM AUTHOR]
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- 2017
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13. NMR-Based Metabolomics for Organic Farming Traceability of Early Potatoes.
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Pacifico, Daniela, Casciarli, Lorena, Ritota, Mena, Mandolino, Giuseppe, Onofri, Chiara, Moschella, Anna, Parisi, Bruno, Cafiero, Caterina, and Valentini, Massimiliano
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- 2013
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14. Curcumin Inhibits the Growth, Induces Apoptosis and Modulates the Function of Pituitary Folliculostellate Cells.
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Schaaf, Christian, Shan, Bing, Onofri, Chiara, Stalla, Günter K., Arzt, Eduardo, Schilling, Tobias, Perone, Marcelo J., and Renner, Ulrich
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APOPTOSIS ,POLYPHENOLS ,CELL death ,CELL cycle ,VASCULAR endothelial growth factors ,ENDOTOXINS - Abstract
The polyphenol curcumin (diferuloylmethane) is the active componenet of the spice plant Curcuma longa and has been shown to exert multiple actions on mammalian cells. We have studied its effect on folliculostellate (FS) TtT/GF mouse pituitary cells, representative of a multifunctional, endocrine inactive cell type of the anterior pituitary. Proliferation of TtT/GF cells was inhibited by curcumin in a monolayer cell culture and in the colony formation assay in soft agar. Fluorescence-activated cell-sorting (FACS) analysis demonstrated curcumin-induced cell cycle arrest at G
2 /M accompanied by inhibition of cyclin D1 protein expression. Curcumin had a small effect on necrosis of TtT/GF cells, but it mainly stimulated apoptosis as demonstrated by FACS analysis (Annexin V-fluorescein isothiocyannate/7-aminoactinomycin D staining). Curcumin-induced apoptosis involved suppression of Bcl-2, stimulation of cleaved caspase-3 and induction of DNA fragmentation. Functional studies on FS cell-derived compounds showed that curcumin inhibited mRNA synthesis and release of angiogenic vascular endothelial growth factor-A (VEGF-A). Immune-like functions of FS cells were impaired since curcumin downregulated Toll-like receptor 4, reduced nuclear factor-κB expression and suppressed bacterial endotoxin-induced interleukin-6 (IL-6) secretion. The inhibitory action of curcumin on VEGF-A and IL-6 production was also found in primary rat pituitary cell cultures, in which FS cells are the only source of these proteins. The observed effects of curcumin on FS cell growth, apoptosis and functions may have therapeutic consequences for the intrapituitary regulation of hormone production and release as well as for pituitary tumor pathogenesis. Copyright © 2010 S. Karger AG, Basel [ABSTRACT FROM AUTHOR]- Published
- 2010
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15. Involvement of the gp130 cytokine transducer in MtT/S pituitary somatotroph tumour development in an autocrine-paracrine model.
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Graciarena, Mariana, Carbia-Nagashima, Alberto, Onofri, Chiara, Perez-Castro, Carolina, Giacomini, Damiana, Renner, Ulrich, Stalla, Günter K., and Arzt, Eduardo
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- 2004
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16. Functional IDO Is Expressed on CD34+- and Monocyte-Derived Dendritic Cells According to Differentiation Status.
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Curti, Antonio, Trabanelli, Sara, Onofri, Chiara, Rutella, Sergio, De Cristofaro, Raimondo, Baccarani, Michele, and Lemoli, Roberto M
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- 2008
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17. Not the one, but the only one: about Cannabis cryptic virus in plants showing ‘hemp streak’ disease symptoms
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Davide Calzolari, Gianpaolo Grassi, Matteo Calassanzio, Chiara Onofri, Gianmaria Magagnini, Daniela Pacifico, Wulf Menzel, L. Righetti, Roberta Paris, Dennis Knierim, Claudio Ratti, Righetti, Laura, Paris, Roberta, Ratti, Claudio, Calassanzio, Matteo, Onofri, Chiara, Calzolari, Davide, Menzel, Wulf, Knierim, Denni, Magagnini, Gianmaria, Pacifico, Daniela, and Grassi, Gianpaolo
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0301 basic medicine ,Chlorosis ,biology ,Inoculation ,HSV ,RT-qPCR ,Streak ,Disease ,Plant Science ,Partitiviridae ,Cannabis sativa ,Horticulture ,biology.organism_classification ,Virology ,Virus ,03 medical and health sciences ,030104 developmental biology ,TaqMan ,Molecular virology ,RNA-Seq ,Agronomy and Crop Science - Abstract
Interveinal chlorosis and leaf margin wrinkling are widespread symptoms of Cannabis sativa. They are traditionally attributed to the so-called hemp streak virus (HSV), but its existence has not been demonstrated yet. To our knowledge, no molecular investigation has so far been performed in order to identify the causal agent of this symptomatology, we therefore decided to use traditional and molecular virology techniques to better characterize symptoms and pursue the etiological agent. No pathogenic virus was found by using targeted PCR reactions and by RNA sequencing, whereas we were able to detect the Cannabis cryptic virus (CanCV) with both techniques. We, therefore, developed an RT-qPCR assay based on a CanCV-specific TaqMan probe and applied it to a wide range of symptomatic and symptomless plants, using a two-step (for quantification), or a one-step (for fast detection) protocol. Both symptoms and the virus were only shown to be transmitted vertically and did not pass via mechanical inoculation or grafting, though we could not find any cause-effect correlation between them. In fact, the virus was found in all the tested hemp samples, and its abundance varied greatly between different accessions and individuals, independently from the presence and severity of symptoms. The suggestion that hemp streak is caused by a virus is therefore questioned. Some abiotic stresses seem to play a role in triggering the symptoms but this aspect needs further investigation. For breeding purposes, a selection of parental plants based on the absence of symptoms proved to be efficient in containment of the disease.
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- 2018
18. Localization of vascular endothelial growth factor (VEGF) receptors in normal and adenomatous pituitaries: Detection of a non-endothelial function of VEGF in pituitary tumours
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Marily Theodoropoulou, C. Onofri, Manfred Lange, Günter K. Stalla, Eberhard Uhl, Ulrich Renner, Marco Losa, Eduardo Arzt, Onofri, Chiara, Theodoropoulou, Marily, Losa, Marco, Uhl, Eberhard, Lange, Manfred, Arzt, Eduardo, Stalla, Günter K., and Renner, Ulrich
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Male ,Vascular Endothelial Growth Factor A ,Morpholine ,placental growth factor ,Angiogenesis ,Endocrinology, Diabetes and Metabolism ,cyclin D1 ,animal cell ,Pituitary neoplasm ,Ligands ,neuropilin 1 ,epithelium tumor ,chemistry.chemical_compound ,Endocrinology ,1-Phosphatidylinositol 3-Kinase ,vasculotropin receptor 2 ,rat ,Pituitary Neoplasm ,phosphatidylinositol 3 kinase ,vasculotropin receptor 1 ,endothelium cell ,In Situ Hybridization ,Phosphoinositide-3 Kinase Inhibitors ,Endothelial Cell ,integumentary system ,messenger RNA ,Reverse Transcriptase Polymerase Chain Reaction ,adult ,article ,Antibodies, Monoclonal ,Somatotroph ,protein function ,Middle Aged ,Immunohistochemistry ,Stimulation, Chemical ,Vascular endothelial growth factor B ,Vascular endothelial growth factor ,Vascular endothelial growth factor A ,aged ,female ,tumor growth ,priority journal ,real time polymerase chain reaction ,hypophysis adenoma ,Pituitary Gland ,embryonic structures ,cardiovascular system ,Female ,Adult ,Adenoma ,medicine.medical_specialty ,protein bcl 2 ,Somatotropic cell ,Morpholines ,Blotting, Western ,Ligand ,protein localization ,Biology ,tumor vascularization ,Internal medicine ,Cell Line, Tumor ,medicine ,Animals ,Humans ,controlled study ,Pituitary Neoplasms ,human ,Chromone ,protein expression ,Aged ,Cell Proliferation ,nonhuman ,Vascular Endothelial Growth Factor Receptor-1 ,Animal ,human cell ,vasculotropin receptor ,Endothelial Cells ,Kinase insert domain receptor ,nucleotide sequence ,medicine.disease ,Vascular Endothelial Growth Factor Receptor-2 ,human tissue ,Neuropilin-1 ,Somatotrophs ,endocrine cell ,Rats ,Receptors, Vascular Endothelial Growth Factor ,chemistry ,vasculotropin A ,Chromones ,gene expression ,Phosphatidylinositol 3-Kinase - Abstract
As for any solid tumour, pituitary adenoma expansion is dependent on neovascularization through angiogenesis. In this process, vascular endothelial growth factor (VEGF) and its receptors VEGFR-1, VEGFR-2 and neuropilin-1 (NRP-1) may play an outstanding role. The intention of this work was to study the expression/localization and possible function of VEGF receptors in pituitary adenomas. VEGF receptor mRNA and protein expression was studied by in situ hybridization, immunohistochemistry and RT-PCR in 6 normal human pituitaries, 39 human pituitary adenomas and 4 rodent pituitary adenoma cell lines. VEGFR-1 expressing somatotroph MtT-S cells were used as a model to study the role of VEGF on cell proliferation and to elucidate the underlying mechanism of action. In normal pituitaries, VEGFR-1 was detected in endocrine cells, whereas VEGFR-2 and NRP-1 were exclusively expressed in endothelial cells. In pituitary tumours, a heterogeneous VEGFR expression pattern was observed by IHC. VEGFR-1, VEGFR-2 and NRP-1 were detected in 24, 18 and 17 adenomas respectively. In the adenomas, VEGFR-1 was expressed in epithelial tumour cells and VEGFR-2/NRP-1 in vessel endothelial cells. Functional studies in VEGFR-1-positive MtT-S cells showed that the ligands of VEGFR-1 significantly stimulated cell proliferation. This effect was mediated through the phosphatidylinositol-3-kinase-signalling pathway and involves induction of cyclin D1 and Bcl-2. Based on our results, we speculate that the ligands of VEGF receptors, such as VEGF-A and placenta growth factor, not only play a role in angiogenesis in pituitary adenomas, but also affect the growth of pituitary tumour cells through VEGFR-1.
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- 2006
19. Geographical and temporal distribution of SARS-CoV-2 clades in the WHO European Region, January to June 2020
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Alm E., Broberg E.K., Connor T., Hodcroft E.B., Komissarov A.B., Maurer-Stroh S., Melidou A., Neher R.A., O'Toole A., Pereyaslov D., Beerenwinkel N., Posada-Cespedes S., Jablonski K.P., Ferreira P.F., Topolsky I., Avsic-Zupanc T., Korva M., Poljak M., Zakotnik S., Zorec T.M., Bragstad K., Hungnes O., Stene-Johansen K., Reusken C., Meijer A., Vennema H., Ruiz-Roldan L., Bracho M.A., Garcia-Gonzalez N., Chiner-Oms A., Cancino-Munoz I., Comas I., Goig G.A., Torres-Puente M., Lopez M.G., Martinez-Priego L., D'Auria G., Ruiz-Hueso P., Ferrus-Abad L., de Marco G., Galan-Vendrell I., Carbo-Ramirez S., Ruiz-Rodriguez P., Coscolla M., Polackova K., Kramna L., Cinek O., Richter J., Krashias G., Tryfonos C., Bashiardes S., Koptides D., Christodoulou C., Bartolini B., Gruber C.E., Di Caro A., Castilletti C., Stefani F., Rimoldi S.G., Romeri F., Salerno F., Polesello S., Nagy A., Jirincova H., Vecerova J., Novakova L., Cordey S., Murtskhvaladze M., Kotaria N., Schar T., Beisel C., Vugrek O., Rokic F., Trgovec-Greif L., Jurak I., Rukavina T., Sucic N., Schonning K., Karst S.M., Kirkegaard R.H., Michaelsen T.Y., Sorensen E.A., Knutson S., Brandt J., Le-Quy V., Sorensen T., Petersen C., Pedersen M.S., Larsen S.L., Skov M.N., Rasmussen M., Fonager J., Fomsgaard A., Maksyutov R.A., Gavrilova E.V., Pyankov O.V., Bodnev S.A., Tregubchak T.V., Shvalov A.N., Antonets D.V., Resende P.C., Goya S., Perrin A., Lee R.T., Yadahalli S., Han A.X., Russell C.A., Schmutz S., Zaheri M., Kufner V., Huber M., Trkola A., Antwerpen M., Walter M.C., van der Werf S., Gambaro F., Behillil S., Enouf V., Donati F., Ustinova M., Rovite V., Klovins J., Savicka O., Wienecke-Baldacchino A.K., Ragimbeau C., Fournier G., Mossong J., Aberle S.W., Haukland M., Enkirch T., Advani A., Karlberg M.L., Lindsjo O.K., Broddesson S., Slavikova M., Lickova M., Klempa B., Staronova E., Ticha E., Szemes T., Rusnakova D., Stadler T., Quer J., Anton A., Andres C., Pinana M., Garcia-Cehic D., Pumarola T., Izopet J., Gioula G., Exindari M., Papa A., Chatzidimitriou D., Metallidis S., Pappa S., Macek M., Geryk J., Broz P., Briksi A., Hubacek P., Drevinek P., Zajac M., Kvapil P., Holub M., Kvapilova K., Novotny A., Kasny M., Klempt P., Vapalahti O., Smura T., Sironen T., Selhorst P., Anthony C., Arien K., Simon-Loriere E., Rabalski L., Bienkowska-Szewczyk K., Borges V., Isidro J., Gomes J.P., Guiomar R., Pechirra P., Costa I., Duarte S., Vieira L., Pyrc K., Zuckerman N.S., Turdikulova S., Abdullaev A., Dalimova D., Abdurakhimov A., Tagliabracci A., Alessandrini F., Melchionda F., Onofri V., Turchi C., Bagnarelli P., Menzo S., Caucci S., Di Sante L., Popa A., Genger J.-W., Agerer B., Lercher A., Endler L., Smyth M., Penz T., Schuster M., Senekowitsch M., Laine J., Bock C., Bergthaler A., Shevtsov A., Kalendar R., Ramanculov Y., Graf A., Muenchhoff M., Keppler O.T., Krebs S., Blum H., Marcello A., Licastro D., D'Agaro P., Laubscher F., Vidanovic D., Tesovic B., Volkening J., Clementi N., Mancini N., Rupnik M., Mahnic A., Walker A., Houwaart T., Wienemann T., Vasconcelos M.K., Strelow D., Jensen B.-E.O., Senff T., Hulse L., Adams O., Andree M., Hauka S., Feldt T., Keitel V., Kindgen-Milles D., Timm J., Pfeffer K., Dilthey A.T., Moore C., Ozdarendeli A., Pavel S.T.I., Yetiskin H., Aydin G., Holyavkin C., Uygut M.A., Cevik C., Shchetinin A., Gushchin V., Dinler-Doganay G., Doganay L., Kizilboga-Akgun T., Karacan I., Pancer K., Maes P., Marti-Carreras J., Wawina-Bokalanga T., Vanmechelen B., Thurmer A., Wedde M., Durrwald R., von Kleist M., Drechsel O., Wolff T., Fuchs S., Kmiecinski R., Michel J., Nitsche A., Casas I., Caballero M.I., Zaballos A., Jimenez P., Jimenez M., Fernandez S.M., Fernandez S.V., de la Plaza I.C., Fadeev A., Ivanova A., Sergeeva M., Stefanelli P., Estee Torok M., Hall G., da Silva Filipe A., Turtle L., Afifi S., McCluggage K., Beer R., Ledesma J., Maksimovic J., Spellman K., Hamilton W.L., Marchbank A., Southgate J.A., Underwood A., Taylor B., Yeats C., Abudahab K., Gemmell M.R., Eccles R., Lucaci A., Nelson C.A., Rainbow L., Whitehead M., Gregory R., Haldenby S., Paterson S., Hughes M.A., Curran M.D., Baker D., Tucker R., Green L.R., Feltwell T., Halstead F.D., Wyles M., Jahun A.S., Ahmad S.S.Y., Georgana I., Goodfellow I., Yakovleva A., Meredith L.W., Gavriil A., Awan A.R., Fisher C., Edgeworth J., Lynch J., Moore N., Williams R., Kidd S.P., Cortes N., Brunker K., McCrone J.T., Quick J., Duckworth N., Walsh S., Sloan T., Ludden C., George R.P., Eltringham G., Brown J.R., Aranday-Cortes E., Shepherd J.G., Hughes J., Li K.K., Williams T.C., Johnson N., Jesudason N., Mair D., Thomson E., Shah R., Parr Y.A., Carmichael S., Robertson D.L., Nomikou K., Broos A., Niebel M., Smollett K., Tong L., Miah S., Wittner A., Phillips N., Payne B., Dewar R., Holmes A., Bolt F., Price J.R., Mookerjee S., Sethi D.K., Potter W., Stanley R., Prakash R., Dervisevic S., Graham J.C., Nelson A., Smith D., Young G.R., Yew W.C., Todd J.A., Trebes A., Andersson M., Bull M., Watkins J., Birchley A., Gatica-Wilcox B., Gilbert L., Kumziene-Summerhayes S., Rey S., Chauhan A., Butcher E., Bicknell K., Elliott S., Glaysher S., Lackenby A., Bibby D., Platt S., Mohamed H., Machin N.W., Mbisa J.L., Evans J., Perry M., Pacchiarini N., Corden S., Adams A.G., Gaskin A., Coombs J., Graham L.J., Cottrell S., Morgan M., Gifford L., Kolyva A., Rudder S.J., Trotter A.J., Mather A.E., Aydin A., Page A.J., Kay G.L., de Oliveira Martins L., Yasir M., Alikhan N.-F., Thomson N.M., Gilroy R., Kingsley R.A., O'Grady J., Gutierrez A.V., Diaz M., Viet T.L., Tedim A.P., Adriaenssens E.M., Patrick Mcclure C., Sang F., Clark G., Howson-Wells H.C., Debebe J., Ball J., Chappell J., Khakh M., Carlile M., Loose M., Lister M.M., Holmes N., Tsoleridis T., Fleming V.M., Wright V., Smith W., Gallagher M.D., Parker M., Partridge D.G., Evans C., Baker P., Essex S., Liggett S., Keeley A.J., Bashton M., Rooke S., Dervisavic S., Meader E.J., Lopez C.E.B., Angyal A., Kristiansen M., Tutill H.J., Findlay J., Mestek-Boukhibar L., Forrest L., Dyal P., Williams R.J., Panchbhaya Y., Williams C.A., Roy S., Pandey S., Stockton J., Loman N.J., Poplawski R., Nicholls S., Rowe W.P.M., Khokhar F., Pinckert M.L., Hosmillo M., Chaudhry Y., Caller L.G., Davidson R.K., Griffith L., Rambaut A., Jackson B., Colquhoun R., Hill V., Nichols J., Asamaphan P., Darby A., Jackson K.A., Iturriza-Gomara M., Vamos E.E., Green A., Aanensen D., Bonsall D., Buck D., Macintyre-Cockett G., de Cesare M., Pybus O., Golubchik T., Scarlett G., Loveson K.F., Robson S.C., Beckett A., Lindsey B., Groves D.C., Parsons P.J., McHugh M.P., Barnes J.D., Manso C.F., Grammatopoulos D., Menger K.E., Harrison E., Gunson R., Peacock S.J., Gonzalez G., Carr M., Mihaela L., Popovici O., Brytting M., Bresner C., Fuller W., Workman T., Mentis A.F., Kossyvakis A., Karamitros T., Pogka V., Kalliaropoulos A., Horefti E., Kontou A., Martinez-Gonzalez B., Labropoulou V., Voulgari-Kokota A., Evangelidou M., Bizta P., Belimezi M., Lambrechts L., Doymaz M.Z., Yazici M.K., Cetin N.S., Karaaslan E., Kallio-Kokko H., Virtanen J., Suvanto M., Nguyen P.T., Ellonen P., Hannula S., Kangas H., Sreenu V.B., Burian K., Terhes G., Gombos K., Gyenesei A., Urban P., Herczeg R., Jakab F., Kemenesi G., Toth G.E., Somogyi B., Zana B., Zeghbib S., Kuczmog A., Foldes F., Lanszki Z., Madai M., Papp H., Pereszlenyi C.I., Babinszky G.C., Dudas G., Csoma E., Abou Tayoun A.N., Alsheikh-Ali A.A., Loney T., Nowotny N., Abdul-Wahab O., Gonzalez-Candelas F., Andersen M.H., Taylor S., MARTI CARRERAS, Joan, Vanmechelen, Bert, Wawina, Tony, Medical Microbiology and Infection Prevention, AII - Infectious diseases, WHO European Region Sequencing Lab, GISAID EpiCoV Grp, Erik, Alm, Eeva K, Broberg, Thomas, Connor, Emma B, Hodcroft, Andrey B, Komissarov, Sebastian, Maurer-Stroh, Angeliki, Melidou, Richard A, Neher, Áine, O’Toole, Dmitriy, Pereyaslov, WHO European Region sequencing laboratories and GISAID EpiCoV group (Niko Beerenwinkel, The, Posada-Céspedes, Susana, Philipp, Kim, Jablonski, Falé Ferreira, Pedro, Topolsky, Ivan, Avšičžupanc, Tatjana, Korva, Miša, Poljak, Mario, Zakotnik, Samo, Tomaž, Zorec, Mark, Bragstad, Karoline, Hungnes, Olav, Stene-Johansen, Kathrine, Reusken, Chantal, Meijer, Adam, Vennema, Harry, Ruiz-Roldán, Lidia, Alma Bracho, María, García-González, Neri, Chiner-Oms, Álvaro, Cancino-Muñoz, Irving, Comas, Iñaki, A Goig, Galo, Torres-Puente, Manuela, G López, Mariana, Martínez-Priego, Llúcia, D’Auria, Giuseppe, LoretoFerrús-Abad, de Marco, Griselda, Galan-Vendrell, Inmaculada, Carbó-Ramirez, Sandra, Ruíz-Hueso, Paula, Coscollá, Mireia, Polackova, Katerina, Kramna, Lenka, Cinek, Ondrej, Richter, Jan, Krashias, George, Tryfonos, Christina, Bashiardes, Stavro, Koptides, Dana, Christodoulou, Christina, Bartolini, Barbara, Em Gruber, Cesare, Di Caro, Antonino, Castilletti, Concetta, Stefani, Fabrizio, Giordana Rimoldi, Sara, Romeri, Francesca, Salerno, Franco, Polesello, Stefano, Nagy, Alexander, Jirincova, Helena, Vecerova, Jaromira, Novakova, Ludmila, Cordey, Samuel, Murtskhvaladze, Marine, Kotaria, Nato, Schär, Tobia, Beisel, Christian, Vugrek, Oliver, Rokić, Filip, Trgovecgreif, Lovro, Jurak, Igor, Rukavina, Tomislav, Sučić, Neven, Schønning, Kristian, M Karst, Søren, H Kirkegaard, Rasmu, Y Michaelsen, Thoma, Aa Sørensen, Emil, Knutson, Simon, Brandt, Jakob, Le-Quy, Vang, Sørensen, Trine, Petersen, Celine, Schou Pedersen, Martin, Løkkegaard Larsen, Sanne, Nielsine Skov, Marianne, Rasmussen, Morten, Fonager, Jannik, Fomsgaard, Ander, Amirovich Maksyutov, Rinat, Vasil’Evna Gavrilova, Elena, Victorovich Pyankov, Oleg, Alexandrovich Bodnev, Sergey, Vladimirovna Tregubchak, Tatyana, Nikolayevich Shvalov, Alexander, Victorovich Antonets, Deni, Cristina Resende, Paola, Goya, Stephanie, Perrin, Amandine, Tc Lee, Raphael, Yadahalli, Shilpa, X Han, Alvin, A Russell, Colin, Schmutz, Stefan, Zaheri, Maryam, Kufner, Verena, Huber, Michael, Trkola, Alexandra, Antwerpen, Marku, C Walter, Mathia, van der Werf, Sylvie, Gambaro, Fabiana, Behillil, Sylvie, Enouf, Vincent, Donati, Flora, Ustinova, Monta, Rovite, Vita, Klovins, Jani, Savicka, Oksana, K Wienecke-Baldacchino, Anke, Ragimbeau, Catherine, Fournier, Guillaume, Mossong, Joël, W Aberle, Stephan, Haukland, Mattia, Enkirch, Theresa, Advani, Abdolreza, Lind Karlberg, Maria, Karlsson Lindsjö, Oskar, Broddesson, Sandra, Sláviková, Monika, Ličková, Martina, Klempa, Bori, Staroňová, Edita, Tichá, Elena, Szemes, Tomáš, Rusňáková, Diana, Stadler, Tanja, Quer, Josep, Anton, Andre, Andres, Cristina, Piñana, Maria, Garcia-Cehic, Damir, Pumarola, Toma, Izopet, Jacque, Gioula, Georgia, Exindari, Maria, Papa, Anna, Chatzidimitriou, Dimitrio, Metallidis, Symeon, Pappa, Stella, Macek Jr, Milan, Geryk, Jan, Brož, Petr, Briksí, Aleš, Hubáček, Petr, Dřevínek, Pavel, Zajac, Miroslav, Kvapil, Petr, Holub, Michal, Kvapilová, Kateřina, Novotný, Adam, Kašný, Martin, Klempt, Petr, Vapalahti, Olli, Smura, Teemu, Sironen, Tarja, Selhorst, Philippe, Anthony, Colin, Ariën, Kevin, Simon-Loriere, Etienne, Rabalski, Lukasz, Bienkowska-Szewczyk, Krystyna, Borges, Vítor, Isidro, Joana, Paulo Gomes, João, Guiomar, Raquel, Pechirra, Pedro, Costa, Inê, Duarte, Sílvia, Vieira, Luí, Pyrc, Krzysztof, S Zuckerman, Neta, Turdikulova, Shahlo, Abdullaev, Alisher, Dalimova, Dilbar, Abdurakhimov, Abror, Tagliabracci, Adriano, Alessandrini, Federica, Melchionda, Filomena, Onofri, Valerio, Turchi, Chiara, Bagnarelli, Patrizia, Menzo, Stefano, Caucci, Sara, Di Sante, Laura, Popa, Alexandra, Genger, Jakob-Wendelin, Agerer, Benedikt, Lercher, Alexander, Endler, Luka, Smyth, Mark, Penz, Thoma, Schuster, Michael, Senekowitsch, Martin, Laine, Jan, Bock, Christoph, Bergthaler, Andrea, Shevtsov, Alexandr, Kalendar, Ruslan, Ramanculov, Yerlan, Graf, Alexander, Muenchhoff, Maximilian, T Keppler, Oliver, Krebs, Stefan, Blum, Helmut, Marcello, Alessandro, Licastro, Danilo, D’Agaro, Pierlanfranco, Laubscher, Florian, Vidanovic, Dejan, Tesovic, Bojana, Volkening, Jeremy, Clementi, Nicola, Mancini, Nicasio, Rupnik, Maja, Mahnic, Aleksander, Walker, Andrea, Houwaart, Torsten, Wienemann, Tobia, Kohns Vasconcelos, Malte, Strelow, Daniel, Ole Jensen, Björn-Erik, Senff, Tina, Hülse, Lisanna, Adams, Ortwin, Andree, Marcel, Hauka, Sandra, Feldt, Torsten, Keitel, Verena, Kindgen-Milles, Detlef, Timm, Jörg, Pfeffer, Klau, T Dilthey, Alexander, Moore, Catherine, Ozdarendeli, Aykut, Terkis Islam Pavel, Shaikh, Yetiskin, Hazel, Aydin, Gunsu, Holyavkin, Can, Ali Uygut, Muhammet, Cevik, Ceren, Shchetinin, Alexey, Gushchin, Vladimir, Dinler-Doganay, Gizem, Doganay, Levent, Kizilboga-Akgun, Tugba, Karacan, Ilker, Pancer, Katarzyna, Maes, Piet, Martí-Carreras, Joan, Wawina-Bokalanga, Tony, Thürmer, Andrea, Wedde, Marianne, Dürrwald, Ralf, Von Kleist, Max, Drechsel, Oliver, Wolff, Thorsten, Fuchs, Stephan, Kmiecinski, Rene, Michel, Janine, Nitsche, Andrea, Casas, Inmaculada, Iglesias Caballero, María, Zaballos, Ángel, Jiménez, Pilar, Jiménez, Mercede, Monzón Fernández, Sara, Varona Fernández, Sarai, Cuesta De La Plaza, Isabel, Fadeev, Artem, Ivanova, Anna, Sergeeva, Mariia, Stefanelli, Paola, Estee Torok, M, Hall, Grant, da Silva Filipe, Ana, Turtle, Lance, Afifi, Safiah, Mccluggage, Kathryn, Beer, Robert, Ledesma, Juan, Maksimovic, Joshua, Spellman, Karla, L Hamilton, William, Marchbank, Angela, Alexander Southgate, Joel, Underwood, Anthony, Taylor, Ben, Yeats, Corin, Abudahab, Khalil, R Gemmell, Matthew, Eccles, Richard, Lucaci, Anita, Abigail Nelson, Charlotte, Rainbow, Lucille, Whitehead, Mark, Gregory, Richard, Haldenby, Sam, Paterson, Steve, A Hughes, Margaret, D Curran, Martin, Baker, David, Tucker, Rachel, R Green, Luke, Feltwell, Theresa, D Halstead, Fenella, Wyles, Matthew, S Jahun, Aminu, Y Ahmad, Shazaad S, Georgana, Iliana, Goodfellow, Ian, Yakovleva, Anna, W Meredith, Luke, Gavriil, Artemi, Raza Awan, Ali, Fisher, Chloe, Jonathan, European Centre for Disease Prevention and Control [Stockholm, Sweden] (ECDC), Cardiff University, Public Health Wales [Cardiff, Royaume uni], University of Basel (Unibas), Research Institute of Influenza, St. Petersburg, Russia, Agency for science, technology and research [Singapore] (A*STAR), National University of Singapore (NUS), University of Edinburgh, WHO Regional Office for Europe [Copenhagen], We gratefully acknowledge the authors, originating and submitting laboratories of the sequences from GISAID’s EpiCoV Database used in the phylogenetic analysis. We gratefully acknowledge all the staff working with sample collection, sample preparation, sequencing, data analysis and data sharing in all laboratories in the WHO European Region for making this work possible, The WHO European Region sequencing laboratories and GISAID EpiCoV group*: Niko Beerenwinkel, Susana Posada-Céspedes, Kim Philipp Jablonski, Pedro Falé Ferreira, Ivan Topolsky, Tatjana Avšič-Županc, Miša Korva, Mario Poljak, Samo Zakotnik, Tomaž Mark Zorec, Karoline Bragstad, Olav Hungnes, Kathrine Stene-Johansen, Chantal Reusken, Adam Meijer, Harry Vennema, Lidia Ruiz-Roldán, María Alma Bracho, Neris García-González, Álvaro Chiner-Oms, Irving Cancino-Muñoz, Iñaki Comas, Galo A Goig, Manuela Torres-Puente, Mariana G López, Llúcia Martínez-Priego, Giuseppe D'Auria, Paula Ruíz-Hueso, Loreto Ferrús-Abad, Griselda de Marco, Inmaculada Galan-Vendrell, Sandra Carbó-Ramirez, Paula Ruiz-Rodriguez, Mireia Coscollá, Katerina Polackova, Lenka Kramna, Ondrej Cinek, Jan Richter, George Krashias, Christina Tryfonos, Stavros Bashiardes, Dana Koptides, Christina Christodoulou, Barbara Bartolini, Cesare Em Gruber, Antonino Di Caro, Concetta Castilletti, Fabrizio Stefani, Sara Giordana Rimoldi, Francesca Romeri, Franco Salerno, Stefano Polesello, Alexander Nagy, Helena Jirincova, Jaromira Vecerova, Ludmila Novakova, Samuel Cordey, Marine Murtskhvaladze, Nato Kotaria, Tobias Schär, Christian Beisel, Oliver Vugrek, Filip Rokić, Lovro Trgovec-Greif, Igor Jurak, Tomislav Rukavina, Neven Sučić, Kristian Schønning, Søren M Karst, Rasmus H Kirkegaard, Thomas Y Michaelsen, Emil Aa Sørensen, Simon Knutson, Jakob Brandt, Vang Le-Quy, Trine Sørensen, Celine Petersen, Martin Schou Pedersen, Sanne Løkkegaard Larsen, Marianne Nielsine Skov, Morten Rasmussen, Jannik Fonager, Anders Fomsgaard, Rinat Amirovich Maksyutov, Elena Vasil'Evna Gavrilova, Oleg Victorovich Pyankov, Sergey Alexandrovich Bodnev, Tatyana Vladimirovna Tregubchak, Alexander Nikolayevich Shvalov, Denis Victorovich Antonets, Paola Cristina Resende, Stephanie Goya, Amandine Perrin, Raphael Tc Lee, Shilpa Yadahalli, Alvin X Han, Colin A Russell, Stefan Schmutz, Maryam Zaheri, Verena Kufner, Michael Huber, Alexandra Trkola, Markus Antwerpen, Mathias C Walter, Sylvie van der Werf, Fabiana Gambaro, Sylvie Behillil, Vincent Enouf, Flora Donati, Monta Ustinova, Vita Rovite, Janis Klovins, Oksana Savicka, Anke K Wienecke-Baldacchino, Catherine Ragimbeau, Guillaume Fournier, Joël Mossong, Stephan W Aberle, Mattias Haukland, Theresa Enkirch, Abdolreza Advani, Maria Lind Karlberg, Oskar Karlsson Lindsjö, Sandra Broddesson, Monika Sláviková, Martina Ličková, Boris Klempa, Edita Staroňová, Elena Tichá, Tomáš Szemes, Diana Rusňáková, Tanja Stadler, Josep Quer, Andres Anton, Cristina Andres, Maria Piñana, Damir Garcia-Cehic, Tomas Pumarola, Jacques Izopet, Georgia Gioula, Maria Exindari, Anna Papa, Dimitrios Chatzidimitriou, Symeon Metallidis, Stella Pappa, Milan Macek Jr, Jan Geryk, Petr Brož, Aleš Briksí, Petr Hubáček, Pavel Dřevínek, Miroslav Zajac, Petr Kvapil, Michal Holub, Kateřina Kvapilová, Adam Novotný, Martin Kašný, Petr Klempt, Olli Vapalahti, Teemu Smura, Tarja Sironen, Philippe Selhorst, Colin Anthony, Kevin Ariën, Etienne Simon-Loriere, Lukasz Rabalski, Krystyna Bienkowska-Szewczyk, Vítor Borges, Joana Isidro, João Paulo Gomes, Raquel Guiomar, Pedro Pechirra, Inês Costa, Sílvia Duarte, Luís Vieira, Krzysztof Pyrc, Neta S Zuckerman, Shahlo Turdikulova, Alisher Abdullaev, Dilbar Dalimova, Abror Abdurakhimov, Adriano Tagliabracci, Federica Alessandrini, Filomena Melchionda, Valerio Onofri, Chiara Turchi, Patrizia Bagnarelli, Stefano Menzo, Sara Caucci, Laura Di Sante, Alexandra Popa, Jakob-Wendelin Genger, Benedikt Agerer, Alexander Lercher, Lukas Endler, Mark Smyth, Thomas Penz, Michael Schuster, Martin Senekowitsch, Jan Laine, Christoph Bock, Andreas Bergthaler, Alexandr Shevtsov, Ruslan Kalendar, Yerlan Ramanculov, Alexander Graf, Maximilian Muenchhoff, Oliver T Keppler, Stefan Krebs, Helmut Blum, Alessandro Marcello, Danilo Licastro, Pierlanfranco D'Agaro, Florian Laubscher, Dejan Vidanovic, Bojana Tesovic, Jeremy Volkening, Nicola Clementi, Nicasio Mancini, Maja Rupnik, Aleksander Mahnic, Andreas Walker, Torsten Houwaart, Tobias Wienemann, Malte Kohns Vasconcelos, Daniel Strelow, Björn-Erik Ole Jensen, Tina Senff, Lisanna Hülse, Ortwin Adams, Marcel Andree, Sandra Hauka, Torsten Feldt, Verena Keitel, Detlef Kindgen-Milles, Jörg Timm, Klaus Pfeffer, Alexander T Dilthey, Catherine Moore, Aykut Ozdarendeli, Shaikh Terkis Islam Pavel, Hazel Yetiskin, Gunsu Aydin, Can Holyavkin, Muhammet Ali Uygut, Ceren Cevik, Alexey Shchetinin, Vladimir Gushchin, Gizem Dinler-Doganay, Levent Doganay, Tugba Kizilboga-Akgun, Ilker Karacan, Katarzyna Pancer, Piet Maes, Joan Martí-Carreras, Tony Wawina-Bokalanga, Bert Vanmechelen, Andrea Thürmer, Marianne Wedde, Ralf Dürrwald, Max Von Kleist, Oliver Drechsel, Thorsten Wolff, Stephan Fuchs, Rene Kmiecinski, Janine Michel, Andreas Nitsche, Inmaculada Casas, María Iglesias Caballero, Ángel Zaballos, Pilar Jiménez, Mercedes Jiménez, Sara Monzón Fernández, Sarai Varona Fernández, Isabel Cuesta De La Plaza, Artem Fadeev, Anna Ivanova, Mariia Sergeeva, Paola Stefanelli, M Estee Torok, Grant Hall, Ana da Silva Filipe, Lance Turtle, Safiah Afifi, Kathryn Mccluggage, Robert Beer, Juan Ledesma, Joshua Maksimovic, Karla Spellman, William L Hamilton, Angela Marchbank, Joel Alexander Southgate, Anthony Underwood, Ben Taylor, Corin Yeats, Khalil Abudahab, Matthew R Gemmell, Richard Eccles, Anita Lucaci, Charlotte Abigail Nelson, Lucille Rainbow, Mark Whitehead, Richard Gregory, Sam Haldenby, Steve Paterson, Margaret A Hughes, Martin D Curran, David Baker, Rachel Tucker, Luke R Green, Theresa Feltwell, Fenella D Halstead, Matthew Wyles, Aminu S Jahun, Shazaad S Y Ahmad, Iliana Georgana, Ian Goodfellow, Anna Yakovleva, Luke W Meredith, Artemis Gavriil, Ali Raza Awan, Chloe Fisher, Jonathan Edgeworth, Jessica Lynch, Nathan Moore, Rebecca Williams, Stephen P Kidd, Nicholas Cortes, Kirstyn Brunker, John T Mccrone, Joshua Quick, Nichola Duckworth, Sarah Walsh, Tim Sloan, Catherine Ludden, Ryan P George, Gary Eltringham, Julianne R Brown, Elihu Aranday-Cortes, James G Shepherd, Joseph Hughes, Kathy K Li, Thomas C Williams, Natasha Johnson, Natasha Jesudason, Daniel Mair, Emma Thomson, Rajiv Shah, Yasmin A Parr, Stephen Carmichael, David L Robertson, Kyriaki Nomikou, Alice Broos, Marc Niebel, Katherine Smollett, Lily Tong, Shahjahan Miah, Anita Wittner, Nicole Phillips, Brendan Payne, Rebecca Dewar, Alison Holmes, Frances Bolt, James R Price, Siddharth Mookerjee, Dheeraj K Sethi, Will Potter, Rachael Stanley, Reenesh Prakash, Samir Dervisevic, Jonathan Clive Graham, Andrew Nelson, Darren Smith, Gregory R Young, Wen Chyin Yew, John A Todd, Amy Trebes, Monique Andersson, Matthew Bull, Joanne Watkins, Alec Birchley, Bree Gatica-Wilcox, Lauren Gilbert, Sara Kumžiene-Summerhayes, Sara Rey, Anoop Chauhan, Ethan Butcher, Kelly Bicknell, Scott Elliott, Sharon Glaysher, Angie Lackenby, David Bibby, Steven Platt, Hodan Mohamed, Nicholas William Machin, Jean Lutamyo Mbisa, Jonathan Evans, Malorie Perry, Nicole Pacchiarini, Sally Corden, Alexander Geraint Adams, Amy Gaskin, Jason Coombs, Lee John Graham, Simon Cottrell, Mari Morgan, Laura Gifford, Anastasia Kolyva, Steven John Rudder, Alexander J Trotter, Alison E Mather, Alp Aydin, Andrew J Page, Gemma L Kay, Leonardo de Oliveira Martins, Muhammad Yasir, Nabil-Fareed Alikhan, Nicholas M Thomson, Rachel Gilroy, Robert A Kingsley, Justin O'Grady, Ana Victoria Gutierrez, Maria Diaz, Thanh Le Viet, Ana P Tedim, Evelien M Adriaenssens, C Patrick Mcclure, Christopher Moore, Fei Sang, Gemma Clark, Hannah C Howson-Wells, Johnny Debebe, Jonathan Ball, Joseph Chappell, Manjinder Khakh, Matthew Carlile, Matthew Loose, Michelle M Lister, Nadine Holmes, Theocharis Tsoleridis, Vicki M Fleming, Victoria Wright, Wendy Smith, Michael D Gallagher, Matthew Parker, David G Partridge, Cariad Evans, Paul Baker, Sarah Essex, Steven Liggett, Alexander J Keeley, Matthew Bashton, Stefan Rooke, Samir Dervisevic, Emma Jane Meader, Carlos Enrique Balcazar Lopez, Adrienn Angyal, Mark Kristiansen, Helena J Tutill, Jacqueline Findlay, Lamia Mestek-Boukhibar, Leysa Forrest, Patricia Dyal, Rachel J Williams, Yasmin Panchbhaya, Charlotte A Williams, Sunando Roy, Sarojini Pandey, Jo Stockton, Nicholas J Loman, Radoslaw Poplawski, Samuel Nicholls, W P M Rowe, Fahad Khokhar, Malte Lars Pinckert, Myra Hosmillo, Yasmin Chaudhry, Laura G Caller, Rose K Davidson, Luke Griffith, Andrew Rambaut, Ben Jackson, Rachel Colquhoun, Verity Hill, Jenna Nichols, Patawee Asamaphan, Alistair Darby, Kathryn A Jackson, Miren Iturriza-Gomara, Ecaterina Edith Vamos, Angie Green, David Aanensen, David Bonsall, David Buck, George Macintyre-Cockett, Mariateresa de Cesare, Oliver Pybus, Tanya Golubchik, Garry Scarlett, Katie F Loveson, Samuel C Robson, Angela Beckett, Benjamin Lindsey, Danielle C Groves, Paul J Parsons, Martin P Mchugh, James Daniel Barnes, Carmen F Manso, Dimitris Grammatopoulos, Katja Elisabeth Menger, Ewan Harrison, Rory Gunson, Sharon J Peacock, Gabriel Gonzalez, Michael Carr, Lazar Mihaela, Odette Popovici, Mia Brytting, Catherine Bresner, William Fuller, Trudy Workman, Andreas F Mentis, Athanasios Kossyvakis, Timokratis Karamitros, Vasiliki Pogka, Antonios Kalliaropoulos, Elina Horefti, Aspasia Kontou, Beatriz Martinez-Gonzalez, Voula Labropoulou, Androniki Voulgari-Kokota, Maria Evangelidou, Panagiota Bizta, Maria Belimezi, Laurens Lambrechts, Mehmet Z Doymaz, Merve Kalkan Yazici, Nesibe S Cetin, Elif Karaaslan, Hannimari Kallio-Kokko, Jenni Virtanen, Maija Suvanto, Phuoc Truong Nguyen, Pekka Ellonen, Sari Hannula, Harri Kangas, Vattipally B Sreenu, Katalin Burián, Gabriella Terhes, Katalin Gombos, Attila Gyenesei, Péter Urbán, Róbert Herczeg, Ferenc Jakab, Gábor Kemenesi, Gábor Endre Tóth, Balázs Somogyi, Brigitta Zana, Safia Zeghbib, Anett Kuczmog, Fanni Földes, Zsófia Lanszki, Mónika Madai, Henrietta Papp, Ágnes Nagy, Csaba István Pereszlényi, Gergely Csaba Babinszky, Gábor Dudás, Eszter Csoma, Ahmad N Abou Tayoun, Alawi A Alsheikh-Ali, Tom Loney, Norbert Nowotny, Osama Abdul-Wahab, Fernando Gonzalez-Candelas, Martin H Andersen, Sarah Taylor, Comas, Iñaki [0000-0001-5504-9408], Alm, E., Broberg, E. K., Connor, T., Hodcroft, E. B., Komissarov, A. B., Maurer-Stroh, S., Melidou, A., Neher, R. A., O'Toole, A., Pereyaslov, D., Beerenwinkel, N., Posada-Cespedes, S., Jablonski, K. P., Ferreira, P. F., Topolsky, I., Avsic-Zupanc, T., Korva, M., Poljak, M., Zakotnik, S., Zorec, T. M., Bragstad, K., Hungnes, O., Stene-Johansen, K., Reusken, C., Meijer, A., Vennema, H., Ruiz-Roldan, L., Bracho, M. A., Garcia-Gonzalez, N., Chiner-Oms, A., Cancino-Munoz, I., Comas, I., Goig, G. A., Torres-Puente, M., Lopez, M. G., Martinez-Priego, L., D'Auria, G., Ruiz-Hueso, P., Ferrus-Abad, L., de Marco, G., Galan-Vendrell, I., Carbo-Ramirez, S., Ruiz-Rodriguez, P., Coscolla, M., Polackova, K., Kramna, L., Cinek, O., Richter, J., Krashias, G., Tryfonos, C., Bashiardes, S., Koptides, D., Christodoulou, C., Bartolini, B., Gruber, C. E., Di Caro, A., Castilletti, C., Stefani, F., Rimoldi, S. G., Romeri, F., Salerno, F., Polesello, S., Nagy, A., Jirincova, H., Vecerova, J., Novakova, L., Cordey, S., Murtskhvaladze, M., Kotaria, N., Schar, T., Beisel, C., Vugrek, O., Rokic, F., Trgovec-Greif, L., Jurak, I., Rukavina, T., Sucic, N., Schonning, K., Karst, S. M., Kirkegaard, R. H., Michaelsen, T. Y., Sorensen, E. A., Knutson, S., Brandt, J., Le-Quy, V., Sorensen, T., Petersen, C., Pedersen, M. S., Larsen, S. L., Skov, M. N., Rasmussen, M., Fonager, J., Fomsgaard, A., Maksyutov, R. A., Gavrilova, E. V., Pyankov, O. V., Bodnev, S. A., Tregubchak, T. V., Shvalov, A. N., Antonets, D. V., Resende, P. C., Goya, S., Perrin, A., Lee, R. T., Yadahalli, S., Han, A. X., Russell, C. A., Schmutz, S., Zaheri, M., Kufner, V., Huber, M., Trkola, A., Antwerpen, M., Walter, M. C., van der Werf, S., Gambaro, F., Behillil, S., Enouf, V., Donati, F., Ustinova, M., Rovite, V., Klovins, J., Savicka, O., Wienecke-Baldacchino, A. K., Ragimbeau, C., Fournier, G., Mossong, J., Aberle, S. W., Haukland, M., Enkirch, T., Advani, A., Karlberg, M. L., Lindsjo, O. K., Broddesson, S., Slavikova, M., Lickova, M., Klempa, B., Staronova, E., Ticha, E., Szemes, T., Rusnakova, D., Stadler, T., Quer, J., Anton, A., Andres, C., Pinana, M., Garcia-Cehic, D., Pumarola, T., Izopet, J., Gioula, G., Exindari, M., Papa, A., Chatzidimitriou, D., Metallidis, S., Pappa, S., Macek, M., Geryk, J., Broz, P., Briksi, A., Hubacek, P., Drevinek, P., Zajac, M., Kvapil, P., Holub, M., Kvapilova, K., Novotny, A., Kasny, M., Klempt, P., Vapalahti, O., Smura, T., Sironen, T., Selhorst, P., Anthony, C., Arien, K., Simon-Loriere, E., Rabalski, L., Bienkowska-Szewczyk, K., Borges, V., Isidro, J., Gomes, J. P., Guiomar, R., Pechirra, P., Costa, I., Duarte, S., Vieira, L., Pyrc, K., Zuckerman, N. S., Turdikulova, S., Abdullaev, A., Dalimova, D., Abdurakhimov, A., Tagliabracci, A., Alessandrini, F., Melchionda, F., Onofri, V., Turchi, C., Bagnarelli, P., Menzo, S., Caucci, S., Di Sante, L., Popa, A., Genger, J. -W., Agerer, B., Lercher, A., Endler, L., Smyth, M., Penz, T., Schuster, M., Senekowitsch, M., Laine, J., Bock, C., Bergthaler, A., Shevtsov, A., Kalendar, R., Ramanculov, Y., Graf, A., Muenchhoff, M., Keppler, O. T., Krebs, S., Blum, H., Marcello, A., Licastro, D., D'Agaro, P., Laubscher, F., Vidanovic, D., Tesovic, B., Volkening, J., Clementi, N., Mancini, N., Rupnik, M., Mahnic, A., Walker, A., Houwaart, T., Wienemann, T., Vasconcelos, M. K., Strelow, D., Jensen, B. -E. O., Senff, T., Hulse, L., Adams, O., Andree, M., Hauka, S., Feldt, T., Keitel, V., Kindgen-Milles, D., Timm, J., Pfeffer, K., Dilthey, A. T., Moore, C., Ozdarendeli, A., Pavel, S. T. I., Yetiskin, H., Aydin, G., Holyavkin, C., Uygut, M. A., Cevik, C., Shchetinin, A., Gushchin, V., Dinler-Doganay, G., Doganay, L., Kizilboga-Akgun, T., Karacan, I., Pancer, K., Maes, P., Marti-Carreras, J., Wawina-Bokalanga, T., Vanmechelen, B., Thurmer, A., Wedde, M., Durrwald, R., von Kleist, M., Drechsel, O., Wolff, T., Fuchs, S., Kmiecinski, R., Michel, J., Nitsche, A., Casas, I., Caballero, M. I., Zaballos, A., Jimenez, P., Jimenez, M., Fernandez, S. M., Fernandez, S. V., de la Plaza, I. C., Fadeev, A., Ivanova, A., Sergeeva, M., Stefanelli, P., Estee Torok, M., Hall, G., da Silva Filipe, A., Turtle, L., Afifi, S., Mccluggage, K., Beer, R., Ledesma, J., Maksimovic, J., Spellman, K., Hamilton, W. L., Marchbank, A., Southgate, J. A., Underwood, A., Taylor, B., Yeats, C., Abudahab, K., Gemmell, M. R., Eccles, R., Lucaci, A., Nelson, C. A., Rainbow, L., Whitehead, M., Gregory, R., Haldenby, S., Paterson, S., Hughes, M. A., Curran, M. D., Baker, D., Tucker, R., Green, L. R., Feltwell, T., Halstead, F. D., Wyles, M., Jahun, A. S., Ahmad, S. S. Y., Georgana, I., Goodfellow, I., Yakovleva, A., Meredith, L. W., Gavriil, A., Awan, A. R., Fisher, C., Edgeworth, J., Lynch, J., Moore, N., Williams, R., Kidd, S. P., Cortes, N., Brunker, K., Mccrone, J. T., Quick, J., Duckworth, N., Walsh, S., Sloan, T., Ludden, C., George, R. P., Eltringham, G., Brown, J. R., Aranday-Cortes, E., Shepherd, J. G., Hughes, J., Li, K. K., Williams, T. C., Johnson, N., Jesudason, N., Mair, D., Thomson, E., Shah, R., Parr, Y. A., Carmichael, S., Robertson, D. L., Nomikou, K., Broos, A., Niebel, M., Smollett, K., Tong, L., Miah, S., Wittner, A., Phillips, N., Payne, B., Dewar, R., Holmes, A., Bolt, F., Price, J. R., Mookerjee, S., Sethi, D. K., Potter, W., Stanley, R., Prakash, R., Dervisevic, S., Graham, J. C., Nelson, A., Smith, D., Young, G. R., Yew, W. C., Todd, J. A., Trebes, A., Andersson, M., Bull, M., Watkins, J., Birchley, A., Gatica-Wilcox, B., Gilbert, L., Kumziene-Summerhayes, S., Rey, S., Chauhan, A., Butcher, E., Bicknell, K., Elliott, S., Glaysher, S., Lackenby, A., Bibby, D., Platt, S., Mohamed, H., Machin, N. W., Mbisa, J. L., Evans, J., Perry, M., Pacchiarini, N., Corden, S., Adams, A. G., Gaskin, A., Coombs, J., Graham, L. J., Cottrell, S., Morgan, M., Gifford, L., Kolyva, A., Rudder, S. J., Trotter, A. J., Mather, A. E., Aydin, A., Page, A. J., Kay, G. L., de Oliveira Martins, L., Yasir, M., Alikhan, N. -F., Thomson, N. M., Gilroy, R., Kingsley, R. A., O'Grady, J., Gutierrez, A. V., Diaz, M., Viet, T. L., Tedim, A. P., Adriaenssens, E. M., Patrick Mcclure, C., Sang, F., Clark, G., Howson-Wells, H. C., Debebe, J., Ball, J., Chappell, J., Khakh, M., Carlile, M., Loose, M., Lister, M. M., Holmes, N., Tsoleridis, T., Fleming, V. M., Wright, V., Smith, W., Gallagher, M. D., Parker, M., Partridge, D. G., Evans, C., Baker, P., Essex, S., Liggett, S., Keeley, A. J., Bashton, M., Rooke, S., Dervisavic, S., Meader, E. J., Lopez, C. E. B., Angyal, A., Kristiansen, M., Tutill, H. J., Findlay, J., Mestek-Boukhibar, L., Forrest, L., Dyal, P., Williams, R. J., Panchbhaya, Y., Williams, C. A., Roy, S., Pandey, S., Stockton, J., Loman, N. J., Poplawski, R., Nicholls, S., Rowe, W. P. M., Khokhar, F., Pinckert, M. L., Hosmillo, M., Chaudhry, Y., Caller, L. G., Davidson, R. K., Griffith, L., Rambaut, A., Jackson, B., Colquhoun, R., Hill, V., Nichols, J., Asamaphan, P., Darby, A., Jackson, K. A., Iturriza-Gomara, M., Vamos, E. E., Green, A., Aanensen, D., Bonsall, D., Buck, D., Macintyre-Cockett, G., de Cesare, M., Pybus, O., Golubchik, T., Scarlett, G., Loveson, K. F., Robson, S. C., Beckett, A., Lindsey, B., Groves, D. C., Parsons, P. J., Mchugh, M. P., Barnes, J. D., Manso, C. F., Grammatopoulos, D., Menger, K. E., Harrison, E., Gunson, R., Peacock, S. J., Gonzalez, G., Carr, M., Mihaela, L., Popovici, O., Brytting, M., Bresner, C., Fuller, W., Workman, T., Mentis, A. F., Kossyvakis, A., Karamitros, T., Pogka, V., Kalliaropoulos, A., Horefti, E., Kontou, A., Martinez-Gonzalez, B., Labropoulou, V., Voulgari-Kokota, A., Evangelidou, M., Bizta, P., Belimezi, M., Lambrechts, L., Doymaz, M. Z., Yazici, M. K., Cetin, N. S., Karaaslan, E., Kallio-Kokko, H., Virtanen, J., Suvanto, M., Nguyen, P. T., Ellonen, P., Hannula, S., Kangas, H., Sreenu, V. B., Burian, K., Terhes, G., Gombos, K., Gyenesei, A., Urban, P., Herczeg, R., Jakab, F., Kemenesi, G., Toth, G. E., Somogyi, B., Zana, B., Zeghbib, S., Kuczmog, A., Foldes, F., Lanszki, Z., Madai, M., Papp, H., Pereszlenyi, C. I., Babinszky, G. C., Dudas, G., Csoma, E., Abou Tayoun, A. N., Alsheikh-Ali, A. A., Loney, T., Nowotny, N., Abdul-Wahab, O., Gonzalez-Candelas, F., Andersen, M. H., Taylor, S., European Centre for Disease Prevention and Control (ECDC), Public Health Wales Microbiology Cardiff, Faculty of Agriculture and Forestry, Department of Agricultural Sciences, and Institute of Biotechnology
- Subjects
Infecções Respiratórias ,0301 basic medicine ,MESH: Coronavirus Infections ,Epidemiology ,[SDV]Life Sciences [q-bio] ,Distribution (economics) ,Wastewater ,MESH: Base Sequence ,Severe Acute Respiratory Syndrome ,MESH: World Health Organization ,Pandemic ,MESH: Coronavirus ,MESH: COVID-19 ,Sequencing ,Viral ,Clade ,Nomenclature ,Genome ,biology ,COVID-19 ,Europe ,NGS ,SARS-CoV-2 ,WGS ,nomenclature ,sequencing ,Base Sequence ,Betacoronavirus ,Coronavirus ,Coronavirus Infections ,Genome, Viral ,Humans ,Phylogeography ,Pneumonia, Viral ,RNA, Viral ,RNA-Dependent RNA Polymerase ,Spatio-Temporal Analysis ,World Health Organization ,Pandemics ,C500 ,European region ,3. Good health ,Geography ,MESH: Phylogeography ,MESH: RNA-Dependent RNA Polymerase ,MESH: RNA, Viral ,MESH: Betacoronavirus ,Spatio-Temporal Analysi ,MESH: Genome, Viral ,Cartography ,Human ,Bioquímica ,MESH: Pandemics ,Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) ,Coronaviru ,030106 microbiology ,03 medical and health sciences ,MESH: Spatio-Temporal Analysis ,MESH: Severe Acute Respiratory Syndrome ,Virology ,MESH: SARS-CoV-2 ,Whole genome sequencing ,MESH: Humans ,Whole Genome Sequencing ,Betacoronaviru ,Coronavirus Infection ,business.industry ,Public Health, Environmental and Occupational Health ,Pneumonia ,biology.organism_classification ,B900 ,030104 developmental biology ,MESH: Pneumonia, Viral ,RNA ,SARS_CoV-2 ,3111 Biomedicine ,MESH: Europe ,Human medicine ,business - Abstract
8 páginas, 3 figuras, We show the distribution of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) genetic clades over time and between countries and outline potential genomic surveillance objectives. We applied three genomic nomenclature systems to all sequence data from the World Health Organization European Region available until 10 July 2020. We highlight the importance of real-time sequencing and data dissemination in a pandemic situation, compare the nomenclatures and lay a foundation for future European genomic surveillance of SARS-CoV-2., We gratefully acknowledge the authors, originating and submitting laboratories of the sequences from GISAID’s EpiCoV Database used in the phylogenetic analysis. We gratefully acknowledge all the staff working with sample collection, sample preparation, sequencing, data analysis and data sharing in all laboratories in the WHO European Region for making this work possible.
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20. Indoleamine 2,3-dioxygenase-expressing leukemic dendritic cells impair a leukemia-specific immune response by inducing potent T regulatory cells.
- Author
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Curti A, Trabanelli S, Onofri C, Aluigi M, Salvestrini V, Ocadlikova D, Evangelisti C, Rutella S, De Cristofaro R, Ottaviani E, Baccarani M, and Lemoli RM
- Subjects
- Acute Disease, Adult, Biocatalysis, Blotting, Western, CD4-Positive T-Lymphocytes cytology, CD4-Positive T-Lymphocytes immunology, CD4-Positive T-Lymphocytes metabolism, CD8-Positive T-Lymphocytes cytology, CD8-Positive T-Lymphocytes immunology, CD8-Positive T-Lymphocytes metabolism, Cell Proliferation drug effects, Cells, Cultured, Coculture Techniques, Dendritic Cells immunology, Dendritic Cells pathology, Flow Cytometry, Gene Expression Regulation, Enzymologic, Gene Expression Regulation, Leukemic, Humans, Immunophenotyping, Indoleamine-Pyrrole 2,3,-Dioxygenase genetics, Indoleamine-Pyrrole 2,3,-Dioxygenase immunology, Kynurenine metabolism, Leukemia, Myeloid immunology, Leukemia, Myeloid pathology, Reverse Transcriptase Polymerase Chain Reaction, T-Lymphocytes, Regulatory cytology, T-Lymphocytes, Regulatory immunology, Tryptophan analogs & derivatives, Tryptophan metabolism, Tryptophan pharmacology, Tumor Cells, Cultured, Dendritic Cells enzymology, Indoleamine-Pyrrole 2,3,-Dioxygenase metabolism, Leukemia, Myeloid enzymology, T-Lymphocytes, Regulatory metabolism
- Abstract
Background: The immunoregulatory enzyme indoleamine 2,3-dioxygenase, which catalyzes the conversion of tryptophan into kynurenine, is expressed in a significant subset of patients with acute myeloid leukemia, resulting in the inhibition of T-cell proliferation and the induction of regulatory T cells. Acute myeloid leukemia cells can be differentiated into dendritic cells, which have increased immunogenicity and have been proposed as vaccines against leukemia., Design and Methods: Leukemic dendritic cells were generated from acute myeloid leukemia cells and used as stimulators in functional assays, including the induction of regulatory T cells. Indoleamine 2,3-dioxygenase expression in leukemic dendritic cells was evaluated at molecular, protein and enzymatic levels., Results: We demonstrate that, after differentiation into dendritic cells, both indoleamine 2,3-dioxygenase-negative and indoleamine 2,3-dioxygenase-positive acute myeloid leukemia samples show induction and up-regulation of indoleamine 2,3-dioxygenase gene and protein, respectively. Indoleamine 2,3-dioxygenase-positive acute myeloid leukemia dendritic cells catabolize tryptophan into kynurenine metabolite and inhibit T-cell proliferation through an indoleamine 2,3-dioxygenase-dependent mechanism. Moreover, indoleamine 2,3-dioxygenase-positive leukemic dendritic cells increase the number of allogeneic and autologous CD4(+)CD25(+) Foxp3(+) T cells and this effect is completely abrogated by the indoleamine 2,3-dioxygenase-inhibitor, 1-methyl tryptophan. Purified CD4(+)CD25(+) T cells obtained from co-culture with indoleamine 2,3-dioxygenase-positive leukemic dendritic cells act as regulatory T cells as they inhibit naive T-cell proliferation and impair the complete maturation of normal dendritic cells. Importantly, leukemic dendritic cell-induced regulatory T cells are capable of in vitro suppression of a leukemia-specific T cell-mediated immune response, directed against the leukemia-associated antigen, Wilms' tumor protein., Conclusions: These data identify indoleamine 2,3-dioxygenase-mediated catabolism as a tolerogenic mechanism exerted by leukemic dendritic cells and have clinical implications for the use of these cells for active immunotherapy of leukemia.
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- 2010
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21. Localization of vascular endothelial growth factor (VEGF) receptors in normal and adenomatous pituitaries: detection of a non-endothelial function of VEGF in pituitary tumours.
- Author
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Onofri C, Theodoropoulou M, Losa M, Uhl E, Lange M, Arzt E, Stalla GK, and Renner U
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- Adenoma metabolism, Adenoma pathology, Adult, Aged, Animals, Antibodies, Monoclonal pharmacology, Blotting, Western methods, Cell Line, Tumor, Cell Proliferation drug effects, Chromones pharmacology, Endothelial Cells chemistry, Female, Humans, Immunohistochemistry methods, In Situ Hybridization methods, Ligands, Male, Middle Aged, Morpholines pharmacology, Neuropilin-1 genetics, Phosphoinositide-3 Kinase Inhibitors, Pituitary Gland metabolism, Pituitary Neoplasms metabolism, Pituitary Neoplasms pathology, Rats, Receptors, Vascular Endothelial Growth Factor immunology, Receptors, Vascular Endothelial Growth Factor metabolism, Reverse Transcriptase Polymerase Chain Reaction, Somatotrophs cytology, Somatotrophs drug effects, Stimulation, Chemical, Vascular Endothelial Growth Factor A analysis, Vascular Endothelial Growth Factor A pharmacology, Vascular Endothelial Growth Factor Receptor-1 analysis, Vascular Endothelial Growth Factor Receptor-1 genetics, Vascular Endothelial Growth Factor Receptor-2 analysis, Vascular Endothelial Growth Factor Receptor-2 genetics, Adenoma chemistry, Pituitary Gland chemistry, Pituitary Neoplasms chemistry, Receptors, Vascular Endothelial Growth Factor analysis, Vascular Endothelial Growth Factor A metabolism
- Abstract
As for any solid tumour, pituitary adenoma expansion is dependent on neovascularization through angiogenesis. In this process, vascular endothelial growth factor (VEGF) and its receptors VEGFR-1, VEGFR-2 and neuropilin-1 (NRP-1) may play an outstanding role. The intention of this work was to study the expression/localization and possible function of VEGF receptors in pituitary adenomas. VEGF receptor mRNA and protein expression was studied by in situ hybridization, immunohistochemistry and RT-PCR in 6 normal human pituitaries, 39 human pituitary adenomas and 4 rodent pituitary adenoma cell lines. VEGFR-1 expressing somatotroph MtT-S cells were used as a model to study the role of VEGF on cell proliferation and to elucidate the underlying mechanism of action. In normal pituitaries, VEGFR-1 was detected in endocrine cells, whereas VEGFR-2 and NRP-1 were exclusively expressed in endothelial cells. In pituitary tumours, a heterogeneous VEGFR expression pattern was observed by IHC. VEGFR-1, VEGFR-2 and NRP-1 were detected in 24, 18 and 17 adenomas respectively. In the adenomas, VEGFR-1 was expressed in epithelial tumour cells and VEGFR-2/NRP-1 in vessel endothelial cells. Functional studies in VEGFR-1-positive MtT-S cells showed that the ligands of VEGFR-1 significantly stimulated cell proliferation. This effect was mediated through the phosphatidylinositol-3-kinase-signalling pathway and involves induction of cyclin D1 and Bcl-2. Based on our results, we speculate that the ligands of VEGF receptors, such as VEGF-A and placenta growth factor, not only play a role in angiogenesis in pituitary adenomas, but also affect the growth of pituitary tumour cells through VEGFR-1.
- Published
- 2006
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