25 results on '"Mutetwa, Tinaye"'
Search Results
2. Host Nuclear Genome Copy Number Variations Identify High-Risk Anal Precancers in People Living with HIV
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Mutetwa, Tinaye, primary, Liu, Yuxin, additional, Silvera, Richard, additional, Evans, Michelle, additional, Yurich, Michael, additional, Tripodi, Joseph, additional, Leonard, Issa, additional, Houldsworth, Jane, additional, Gümüş, Zeynep, additional, Bowcock, Anne M., additional, Sigel, Keith, additional, Gaisa, Michael, additional, and Polak, Paz, additional
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- 2024
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3. Cellular nucleic acid-binding protein restricts SARS-CoV-2 by regulating interferon and disrupting RNA–protein condensates
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Chen, Yongzhi, primary, Lei, Xuqiu, additional, Jiang, Zhaozhao, additional, Humphries, Fiachra, additional, Parsi, Krishna Mohan, additional, Mustone, Nicholas J., additional, Ramos, Irene, additional, Mutetwa, Tinaye, additional, Fernandez-Sesma, Ana, additional, Maehr, René, additional, Caffrey, Daniel R., additional, and Fitzgerald, Katherine A., additional
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- 2023
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4. Cellular nucleic acid-binding protein restricts SARS-CoV-2 by regulating interferon and disrupting RNA-protein condensates.
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Yongzhi Chen, Xuqiu Lei, Zhaozhao Jiang, Humphries, Fiachra, Parsi, Krishna Mohan, Mustone, Nicholas J., Ramos, Irene, Mutetwa, Tinaye, Fernandez-Sesma, Ana, Maehr, René, Caffrey, Daniel R., and Fitzgerald, Katherine A.
- Subjects
SARS-CoV-2 ,VIRAL proteins ,INTERFERONS ,VIRAL transmission ,PHASE separation - Abstract
A detailed understanding of the innate immune mechanisms involved in restricting SARS-CoV-2 infection and how the virus disrupts these processes could reveal new strategies to boost antiviral mechanisms and develop therapeutics for COVID-19. Here, we identify cellular nucleic acid-binding protein (CNBP) as a key host factor controlling SARS-CoV-2 infection. In response to RNA-sensing pathways, CNBP is phosphorylated and translocates from the cytosol to the nucleus where it binds to the interferon-ß enhancer to initiate transcription. Because SARS-CoV-2 evades immune detection by the host's RNA-sensing pathways, CNBP is largely retained in the cytosol where it restricts SARS-CoV-2 directly, leading to a battle between the host and SARS-CoV-2 that extends beyond antiviral immune signaling pathways. We further demonstrated that CNBP binds SARS-CoV-2 viral RNA directly and competes with the viral nucleocapsid protein to prevent viral RNA and nucleocapsid protein from forming liquid-liquid phase separation (LLPS) condensates critical for viral replication. Consequently, cells and animals lacking CNBP have higher viral loads, and CNBP-deficient mice succumb rapidly to infection. Altogether, these findings identify CNBP as a key antiviral factor for SARS-CoV-2, functioning both as a regulator of antiviral IFN gene expression and a cell-intrinsic restriction factor that disrupts LLPS to limit viral replication and spread. In addition, our studies also highlight viral condensates as important targets and strategies for the development of drugs to combat COVID-19. [ABSTRACT FROM AUTHOR]
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- 2023
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5. Automated In Vivo High-Resolution Imaging to Detect Human Papillomavirus–Associated Anal Precancer in Persons Living With HIV
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Brenes, David, primary, Kortum, Alex, additional, Carns, Jennifer, additional, Mutetwa, Tinaye, additional, Schwarz, Richard, additional, Liu, Yuxin, additional, Sigel, Keith, additional, Richards-Kortum, Rebecca, additional, Anandasabapathy, Sharmila, additional, Gaisa, Michael, additional, and Chiao, Elizabeth, additional
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- 2022
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6. Sex-Related Differences in Outcomes for Oropharyngeal Squamous Cell Carcinoma by HPV Status
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Kao, Derek D., primary, Ferrandino, Rocco M., additional, Marshall, Deborah C., additional, Mutetwa, Tinaye, additional, Miles, Brett, additional, Bauml, Joshua M., additional, and Sigel, Keith M., additional
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- 2022
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7. CNBP restricts SARS-CoV2 by regulating IFN and disrupting RNA-protein condensates
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Fitzgerald, Katherine, primary, Chen, Yongzhi, additional, Lei, Xuqiu, additional, Jiang, Zhaozhao, additional, Humphries, Fiachra, additional, Mustone, Nicholas, additional, Ramos, Irene, additional, Mutetwa, Tinaye, additional, and Fernandez-Sesma, Ana, additional
- Published
- 2022
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- View/download PDF
8. The oral drug nitazoxanide restricts SARS-CoV-2 infection and attenuates disease pathogenesis in Syrian hamsters
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Miorin, Lisa, primary, Mire, Chad E., additional, Ranjbar, Shahin, additional, Hume, Adam J., additional, Huang, Jessie, additional, Crossland, Nicholas A., additional, White, Kris M, additional, Laporte, Manon, additional, Kehrer, Thomas, additional, Haridas, Viraga, additional, Moreno, Elena, additional, Nambu, Aya, additional, Jangra, Sonia, additional, Cupic, Anastasija, additional, Dejosez, Marion, additional, Abo, Kristine A., additional, Tseng, Anna E., additional, Werder, Rhiannon B., additional, Rathnasinghe, Raveen, additional, Mutetwa, Tinaye, additional, Ramos, Irene, additional, de Aja, Julio Sainz, additional, de Alba Rivas, Carolina Garcia, additional, Schotsaert, Michael, additional, Corley, Ronald B., additional, Falvo, James V., additional, Fernandez-Sesma, Ana, additional, Kim, Carla, additional, Rossignol, Jean-François, additional, Wilson, Andrew A., additional, Zwaka, Thomas, additional, Kotton, Darrell N., additional, Mühlberger, Elke, additional, García-Sastre, Adolfo, additional, and Goldfeld, Anne E., additional
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- 2022
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9. Companion Tumor Sequencing to Assess the Clinical Significance of Germline Sequencing in Children With Cancer
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Mutetwa, Tinaye, primary, Goudie, Catherine, additional, Foulkes, William D., additional, and Polak, Paz, additional
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- 2021
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10. Chromosomal copy number alterations in anal precancers from people with HIV
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Mutetwa, Tinaye, Karlić, Rosa, Houldsworth, Jane, Bowcock M., Anne, Gaisa M., Michael, Liu, Yuxin, Polak, Paz, and Sigel, Kieth
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Anal cancer ,Copy number alteration ,FISH ,HPV ,HIV - Abstract
Background: People living with HIV (PWH) are susceptible to high-risk human papillomavirus (HPV) infection of the anal canal owing to their immunocompromised status. The virus can transform anal squamous epithelia to low-grade squamous intraepithelial lesions (LSILs) and further to high-grade squamous intraepithelial lesions (HSILs). HSILs are well-defined cancer precursors that can progress to invasive cancer if left untreated. HPV-associated cancers commonly carry genomic abnormalities, specifically, a gain of chromosome 3q26 (PIK3CA), 20q13, 5p15 (TERT) and 7 centromere (cen7). We aimed to determine whether HPV-associated anal precancers carry similar genomic abnormalities and if so, to analyze their associations with histological severity and specific HPV types. Methods: Anal lesions from 63 unique patients (36 HSIL, 27 LSIL) were obtained via high-resolution anoscopy (HRA)-directed biopsy. Anal swabs were performed at the time of HRA to collect samples for cytological diagnosis and HPV DNA testing of HPV16, 18, and other (12) high-risk types. FISH-based HPV-associated Cancer Test (FHACT) was performed on the biopsy samples using four-color probes to detect any gain of chromosome 3q, 20q, 5p, and 7. The associations between genomic alterations, histological severity and HPV types were analyzed. Results: Our cohort had a median age of 50, was predominantly (70%) of Black and Hispanic race/ethnicity and 95% had suppressed HIV viral loads. Genomic abnormalities were detected in 47% of anal HSILs and 7% of LSILs (p=0.002). A gain of 3q, 20q, 5p, and cen7 was detected in 42%, 31%, 31%, and 19% of HSILs and 7%, 4%, 0%, and 0% of LSILs, respectively. Genomic abnormalities were more frequent in lesions associated with HPV16/18 infection, compared with those associated with non-16/18 types and negative HPV (42% vs. 24% vs. 9% ; p=0.06). 91% of lesions with 5p gain had gain in 20q. Cen7 gains were only detected in lesions with a gain of 20q13, suggesting a possible sequential order in development of chromosomal gains: 3q26 first, followed by 20q13 or 5p15, and then cen7. Conclusion: Anal precancers frequently demonstrate genomic abnormalities found in other HPV-associated cancers. The most common abnormality was the amplification of chromosome 3q, the location of PIK3CA gene. Our results suggest that PI3- kinase/AKT signaling pathway may play an important role in anal cancer development in PWH.
- Published
- 2021
11. Coronavirus 2019 and people living with human immunodeficiency virus
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Sigel, Keith Magnus, Swartz, Talia H., Golden, Eddye, Paranjpe, Ishan, Somani, Sulaiman, Richter, Felix, De Freitas, Jessica K., Miotto, Riccardo, Zhao, Shan, Polak, Paz, Mutetwa, Tinaye, Factor, Stephanie, Mehandru, Saurabh, Mullen, Michael, Cossarini, Francesca, Böttinger, Erwin (Prof. Dr.), Fayad, Zahi, Merad, Miriam, Gnjatic, Sacha, Aberg, Judith, Charney, Alexander, Nadkarni, Girish, and Glicksberg, Benjamin S.
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Hasso-Plattner-Institut für Digital Engineering gGmbH ,ddc:610 - Abstract
Background: There are limited data regarding the clinical impact of coronavirus disease 2019 (COVID-19) on people living with human immunodeficiency virus (PLWH). In this study, we compared outcomes for PLWH with COVID-19 to a matched comparison group. Methods: We identified 88 PLWH hospitalized with laboratory-confirmed COVID-19 in our hospital system in New York City between 12 March and 23 April 2020. We collected data on baseline clinical characteristics, laboratory values, HIV status, treatment, and outcomes from this group and matched comparators (1 PLWH to up to 5 patients by age, sex, race/ethnicity, and calendar week of infection). We compared clinical characteristics and outcomes (death, mechanical ventilation, hospital discharge) for these groups, as well as cumulative incidence of death by HIV status. Results: Patients did not differ significantly by HIV status by age, sex, or race/ethnicity due to the matching algorithm. PLWH hospitalized with COVID-19 had high proportions of HIV virologic control on antiretroviral therapy. PLWH had greater proportions of smoking (P < .001) and comorbid illness than uninfected comparators. There was no difference in COVID-19 severity on admission by HIV status (P = .15). Poor outcomes for hospitalized PLWH were frequent but similar to proportions in comparators; 18% required mechanical ventilation and 21% died during follow-up (compared with 23% and 20%, respectively). There was similar cumulative incidence of death over time by HIV status (P = .94). Conclusions: We found no differences in adverse outcomes associated with HIV infection for hospitalized COVID-19 patients compared with a demographically similar patient group.
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- 2020
12. Covid-19 and People with HIV Infection: Outcomes for Hospitalized Patients in New York City
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Sigel, Keith, Swartz, Talia, Golden, Eddye, Paranjpe, Ishan, Somani, Sulaiman, Richter, Felix, De Freitas, Jessica K, Miotto, Riccardo, Zhao, Shan, Polak, Paz, Mutetwa, Tinaye, Factor, Stephanie, Mehandru, Saurabh, Mullen, Michael, Cossarini, Francesca, Bottinger, Erwin, Fayad, Zahi, Merad, Miriam, Gnjatic, Sacha, Aberg, Judith, Charney, Alexander, Nadkarni, Girish, and Glicksberg, Benjamin S
- Subjects
Human Immunodeficiency Virus (HIV) ,AcademicSubjects/MED00290 ,SARS-CoV-2 ,Coronavirus-19 (COVID-19) ,Major Article ,COVID-19 ,HIV ,Humans ,HIV Infections ,Morbidity - Abstract
Background There have been limited data regarding the clinical impact of COVID-19 disease on people with HIV (PWH). In this study we compared outcomes for PWH with COVID-19 disease to a matched comparison group. Design We identified 88 PWH hospitalized with laboratory confirmed COVID-19 in our hospital system in New York between March 12 and April 23, 2020. We collected data on baseline clinical characteristics, laboratory values, HIV infection status, COVID-19 treatment, and outcomes from this group and matched comparators (one PWH to up to five patients by age, sex, race/ethnicity and calendar week of infection). We compared baseline clinical characteristics and outcomes (death, mechanical ventilation, hospital discharge) for these two groups, as well as cumulative incidence of death by HIV status. Results Patients did not differ significantly by HIV status by age, sex or race/ethnicity due to the matching algorithm. PWH hospitalized with COVID-19 had high proportions of HIV virologic control on antiretroviral therapy. PWH had greater proportions of smoking (p
- Published
- 2020
13. Gemcitabine plus nab‐paclitaxel versus FOLFIRINOX for unresected pancreatic cancer: Comparative effectiveness and evaluation of tumor growth in Veterans
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Sigel, Keith, primary, Zhou, Mengxi, additional, Park, Yeun-Hee Anna, additional, Mutetwa, Tinaye, additional, Nadkarni, Girish, additional, Yeh, Celine, additional, Polak, Paz, additional, Sigel, Carlie, additional, Conroy, Thierry, additional, Juzyna, Béata, additional, Ychou, Mark, additional, Fojo, Tito, additional, Wisnivesky, Juan P, additional, and Bates, Susan E., additional
- Published
- 2021
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14. Coronavirus 2019 and People Living With Human Immunodeficiency Virus: Outcomes for Hospitalized Patients in New York City
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Sigel, Keith, primary, Swartz, Talia, additional, Golden, Eddye, additional, Paranjpe, Ishan, additional, Somani, Sulaiman, additional, Richter, Felix, additional, De Freitas, Jessica K, additional, Miotto, Riccardo, additional, Zhao, Shan, additional, Polak, Paz, additional, Mutetwa, Tinaye, additional, Factor, Stephanie, additional, Mehandru, Saurabh, additional, Mullen, Michael, additional, Cossarini, Francesca, additional, Bottinger, Erwin, additional, Fayad, Zahi, additional, Merad, Miriam, additional, Gnjatic, Sacha, additional, Aberg, Judith, additional, Charney, Alexander, additional, Nadkarni, Girish, additional, and Glicksberg, Benjamin S, additional
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- 2020
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15. Lung cancer chemotherapy and radiotherapy toxicity in patients with HIV.
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Mutetwa, Tinaye, primary, Marshall, Deborah Catherine, additional, Rehmani, Sadiq, additional, Polak, Paz, additional, and Sigel, Keith Magnus, additional
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- 2020
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16. Innate Immune Response to Influenza Virus at Single-Cell Resolution in Human Epithelial Cells Revealed Paracrine Induction of Interferon Lambda 1
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Ramos, Irene, primary, Smith, Gregory, additional, Ruf-Zamojski, Frederique, additional, Martínez-Romero, Carles, additional, Fribourg, Miguel, additional, Carbajal, Edwin A., additional, Hartmann, Boris M., additional, Nair, Venugopalan D., additional, Marjanovic, Nada, additional, Monteagudo, Paula L., additional, DeJesus, Veronica A., additional, Mutetwa, Tinaye, additional, Zamojski, Michel, additional, Tan, Gene S., additional, Jayaprakash, Ciriyam, additional, Zaslavsky, Elena, additional, Albrecht, Randy A., additional, Sealfon, Stuart C., additional, García-Sastre, Adolfo, additional, and Fernandez-Sesma, Ana, additional
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- 2019
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17. Predictive Approaches for Acute Dialysis Requirement and Death in COVID-19
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Vaid, Akhil, Chan, Lili, Chaudhary, Kumardeep, Jaladanki, Suraj K., Paranjpe, Ishan, Russak, Adam, Kia, Arash, Timsina, Prem, Levin, Matthew A., He, John Cijiang, Böttinger, Erwin P., Charney, Alexander W., Fayad, Zahi A., Coca, Steven G., Glicksberg, Benjamin S., Nadkarni, Girish N., Charney, Alex, Just, Allan C., Glicksberg, Benjamin, Nadkarni, Girish, Huckins, Laura, O’Reilly, Paul, Miotto, Riccardo, Fayad, Zahi, Russak, Adam J., Rahman, Adeeb, Vaid, Akhil, Le Dobbyn, Amanda, Leader, Andrew, Moscati, Arden, Kapoor, Arjun, Chang, Christie, Bellaire, Christopher, Carrion, Daniel, Chaudhry, Fayzan, Richter, Felix, Soultanidis, Georgios, Paranjpe, Ishan, Nabeel, Ismail, De Freitas, Jessica, Xu, Jiayi, Rush, Johnathan, Johnson, Kipp, Vemuri, Krishna, Chaudhary, Kumardeep, Lepow, Lauren, Cotter, Liam, Liharska, Lora, Pereanez, Marco, Bicak, Mesude, DeFelice, Nicholas, Naik, Nidhi, Beckmann, Noam, Nadukuru, Rajiv, O’Hagan, Ross, Zhao, Shan, Somani, Sulaiman, Van Vleck, Tielman T., Mutetwa, Tinaye, Wanyan, Tingyi, Fauveau, Valentin, Yang, Yang, Lavin, Yonit, Lanksy, Alona, Atreja, Ashish, Del Valle, Diane, Meyer, Dara, Golden, Eddye, Fasihuddin, Farah, Hsun Wen, Huei, Rogers, Jason, Lilly Gutierrez, Jennifer, Walker, Laura, Singh, Manbir, Danieletto, Matteo, Nieves, Melissa A., Zweig, Micol, Pyzik, Renata, Fayad, Rima, Glowe, Patricia, Calorossi, Sharlene, Kaur, Sparshdeep, Ascolillo, Steven, Roa, Yovanna, Lala-Trindade, Anuradha, Coca, Steven G., Percha, Bethany, Sigel, Keith, Polak, Paz, Hirten, Robert, Swartz, Talia, Do, Ron, Loos, Ruth J. F., Charney, Dennis, Nestler, Eric, Murphy, Barbara, Reich, David, Böttinger, Erwin, Chatani, Kumar, Martin, Glenn, Nestler, Eric, Kovatch, Patricia, Finkelstein, Joseph, Murphy, Barbara, Buxbaum, Joseph, Cho, Judy, Kasarskis, Andrew, Horowitz, Carol, Cordon-Cardo, Carlos, Sohn, Monica, Martin, Glenn, Garcia-Sastre, Adolfo, Bagiella, Emilia, Krammer, Florian, Aberg, Judith, Narula, Jagat, Wright, Robert, Lium, Erik, Wright, Rosalind, Gelijns, Annetine, Fuster, Valentin, and Merad, Miriam
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- 2021
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18. Rapid Cloning of Novel Rhesus Adenoviral Vaccine Vectors
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Abbink, Peter, primary, Kirilova, Marinela, additional, Boyd, Michael, additional, Mercado, Noe, additional, Li, Zhenfeng, additional, Nityanandam, Ramya, additional, Nanayakkara, Ovini, additional, Peterson, Rebecca, additional, Larocca, Rafael A., additional, Aid, Malika, additional, Tartaglia, Lawrence, additional, Mutetwa, Tinaye, additional, Blass, Eryn, additional, Jetton, David, additional, Maxfield, Lori F., additional, Borducchi, Erica N., additional, Badamchi-Zadeh, Alexander, additional, Handley, Scott, additional, Zhao, Guoyan, additional, Virgin, Herbert W., additional, Havenga, Menzo J., additional, and Barouch, Dan H., additional
- Published
- 2018
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19. Rapid Cloning of Novel Rhesus Adenoviral Vaccine Vectors
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Abbink, Peter, Kirilova, Marinela, Boyd, Michael, Mercado, Noe, Li, Zhenfeng, Nityanandam, Ramya, Nanayakkara, Ovini, Peterson, Rebecca, Larocca, Rafael A., Aid, Malika, Tartaglia, Lawrence, Mutetwa, Tinaye, Blass, Eryn, Jetton, David, Maxfield, Lori F., Borducchi, Erica N., Badamchi-Zadeh, Alexander, Handley, Scott, Zhao, Guoyan, Virgin, Herbert W., Havenga, Menzo J., and Barouch, Dan H.
- Subjects
adenoviruses ,live vector vaccines ,rhesus monkey ,vaccines - Abstract
Human and chimpanzee adenovirus vectors are being developed to circumvent preexisting antibodies against common adenovirus vectors such as Ad5. However, baseline immunity to these vectors still exists in human populations. Traditional cloning of new adenovirus vaccine vectors is a long and cumbersome process that takes 2 months or more and that requires rare unique restriction enzyme sites. Here we describe a novel, restriction enzyme-independent method for rapid cloning of new adenovirus vaccine vectors that reduces the total cloning procedure to 1 week. We developed 14 novel adenovirus vectors from rhesus monkeys that can be grown to high titers and that are immunogenic in mice. All vectors grouped with the unusual adenovirus species G and show extremely low seroprevalence in humans. Rapid cloning of novel adenovirus vectors is a promising approach for the development of new vector platforms. Rhesus adenovirus vectors may prove useful for clinical development. IMPORTANCE: To overcome baseline immunity to human and chimpanzee adenovirus vectors, we developed 14 novel adenovirus vectors from rhesus monkeys. These vectors are immunogenic in mice and show extremely low seroprevalence in humans. Rhesus adenovirus vectors may prove useful for clinical development.
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- 2018
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20. Olaparib for Metastatic Castration-Resistant Prostate Cancer.
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Mutetwa, Tinaye, Foulkes, William D., and Polak, Paz
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- *
CASTRATION-resistant prostate cancer - Published
- 2020
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21. Olaparib for Metastatic Castration-Resistant Prostate Cancer.
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Heidegger, Isabel, Pircher, Andreas, Mutetwa, Tinaye, Foulkes, William D, and Polak, Paz
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- *
CASTRATION-resistant prostate cancer , *MEDICAL societies , *HETEROCYCLIC compounds , *PROSTATE tumors - Published
- 2020
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22. Host Nuclear Genome Copy Number Variations Identify High-Risk Anal Precancers in People Living With HIV.
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Mutetwa T, Liu Y, Silvera R, Evans M, Yurich M, Tripodi J, Leonard I, Houldsworth J, Gümüş Z, Bowcock AM, Sigel K, Gaisa M, and Polak P
- Subjects
- Humans, Male, Female, Middle Aged, Adult, Papillomavirus Infections complications, Papillomavirus Infections virology, Papillomavirus Infections genetics, Squamous Intraepithelial Lesions genetics, Squamous Intraepithelial Lesions virology, Anus Neoplasms genetics, Anus Neoplasms virology, HIV Infections complications, DNA Copy Number Variations genetics, Precancerous Conditions genetics, Precancerous Conditions virology, Precancerous Conditions pathology
- Abstract
Background: People living with HIV (PLWH) have substantially increased incidence of anal precancer and cancer. There are very little data regarding genomic disturbances in anal precancers among PLWH. In this study, specific chromosomal variants were identified in anal squamous intraepithelial lesions., Methods: Overall, 63 anal biopsy specimens (27 low-grade intraepithelial lesions [LSIL] and 36 high-grade intraepithelial lesions [HSIL]) were collected from PLWH obtained as part of anal cancer screening in our NYC-based health system. Data on patient demographics, anal cytological, and high-risk human papillomavirus (HR-HPV) diagnoses were collected. Specimens were tested for a panel of chromosomal alterations associated with HPV-induced oncogenesis using fluorescence in situ hybridization, and analyses compared the associations of these alterations with clinical characteristics., Results: Gains of 3q26, 5p15, 20q13, and cen7 were detected in 42%, 31%, 31%, and 19% of HSIL compared with 7%, 0%, 4%, and 0% of LSIL, respectively. If at least 1 abnormality was observed, 89% had a 3q26 gain. In lesions with 5p15 gains, 20q13 gains co-occurred in 91% of cases, while cen7 gain only co-occurred with the other 3 alterations. The sensitivity and specificity of any alteration to predict HSIL were 47% (95% CI: 30%-65%) and 93% (95% CI: 76%-99%), respectively., Conclusions: Genomic alterations seen in HPV-associated cancers may help distinguish anal LSIL from HSIL. 3q26 amplification may be an early component of anal carcinogenesis, preceding 5p16, 20q13, and/or chr7., Impact: Insights into potential genomic biomarkers for discriminating high-risk anal precancers are shared., Competing Interests: The authors have no funding or conflicts of interest to disclose., (Copyright © 2024 Wolters Kluwer Health, Inc. All rights reserved.)
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- 2024
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23. Automated In Vivo High-Resolution Imaging to Detect Human Papillomavirus-Associated Anal Precancer in Persons Living With HIV.
- Author
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Brenes D, Kortum A, Carns J, Mutetwa T, Schwarz R, Liu Y, Sigel K, Richards-Kortum R, Anandasabapathy S, Gaisa M, and Chiao E
- Subjects
- Humans, Human Papillomavirus Viruses, Anal Canal, Biopsy, Anus Neoplasms complications, Anus Neoplasms diagnosis, Anus Neoplasms pathology, HIV Infections complications, HIV Infections pathology
- Abstract
Introduction: In the United States, the effectiveness of anal cancer screening programs has been limited by a lack of trained professionals proficient in high-resolution anoscopy (HRA) and a high patient lost-to-follow-up rate between diagnosis and treatment. Simplifying anal intraepithelial neoplasia grade 2 or more severe (AIN 2+) detection could radically improve the access and efficiency of anal cancer prevention. Novel optical imaging providing point-of-care diagnoses could substantially improve existing HRA and histology-based diagnosis. This work aims to demonstrate the potential of high-resolution microendoscopy (HRME) coupled with a novel machine learning algorithm for the automated, in vivo diagnosis of anal precancer., Methods: The HRME, a fiber-optic fluorescence microscope, was used to capture real-time images of anal squamous epithelial nuclei. Nuclear staining is achieved using 0.01% wt/vol proflavine, a topical contrast agent. HRME images were analyzed by a multitask deep learning network (MTN) that computed the probability of AIN 2+ for each HRME image., Results: The study accrued data from 77 people living with HIV. The MTN achieved an area under the receiver operating curve of 0.84 for detection of AIN 2+. At the AIN 2+ probability cutoff of 0.212, the MTN achieved comparable performance to expert HRA impression with a sensitivity of 0.92 ( P = 0.68) and specificity of 0.60 ( P = 0.48) when using histopathology as the gold standard., Discussion: When used in combination with HRA, this system could facilitate more selective biopsies and promote same-day AIN2+ treatment options by enabling real-time diagnosis., (Copyright © 2023 The Author(s). Published by Wolters Kluwer Health, Inc. on behalf of The American College of Gastroenterology.)
- Published
- 2023
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24. CNBP restricts SARS-CoV2 by regulating IFN and disrupting RNA-protein condensates.
- Author
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Fitzgerald K, Chen Y, Lei X, Jiang Z, Humphries F, Mustone N, Ramos I, Mutetwa T, and Fernandez-Sesma A
- Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) evades antiviral immunity through the expression of viral proteins that block detection, signaling, interferon (IFN) induction, and IFN-stimulated gene (ISG) expression
1, 2 . Weak induction of type I IFNs is associated with a hyperinflammatory response in patients that develop severe COVID-193, 4, 5 . Here we uncover a role for cellular nucleic acid-binding protein (CNBP) in restricting SARS-CoV-2. Typically, CNBP resides in the cytosol and, in response to RNA sensing pathways, undergoes phosphorylation, nuclear translocation, and IFNβ enhancer DNA binding to turn on IFNβ gene transcription. In SARS-CoV-2-infected cells CNBP coordinates IFNβ gene transcription. In addition, CNBP binds SARS-CoV-2 viral RNA directly. CNBP competes with the nucleocapsid (N) protein and prevents viral RNA and nucleocapsid protein from undergoing liquid-liquid phase separation (LLPS) forming condensates critical for viral replication. Consequently, cells and animals lacking CNBP have higher viral loads and CNBP-deficient mice succumb rapidly to infection. Altogether, these findings identify CNBP as a key antiviral factor for SARS-CoV-2, functioning both as a regulator of antiviral IFN gene expression and a cell intrinsic restriction factor that disrupts LLPS to limit viral replication and spread., Competing Interests: Competing Interest Statement: The authors declare no competing financial interests.- Published
- 2022
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25. The oral drug nitazoxanide restricts SARS-CoV-2 infection and attenuates disease pathogenesis in Syrian hamsters.
- Author
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Miorin L, Mire CE, Ranjbar S, Hume AJ, Huang J, Crossland NA, White KM, Laporte M, Kehrer T, Haridas V, Moreno E, Nambu A, Jangra S, Cupic A, Dejosez M, Abo KA, Tseng AE, Werder RB, Rathnasinghe R, Mutetwa T, Ramos I, de Aja JS, de Alba Rivas CG, Schotsaert M, Corley RB, Falvo JV, Fernandez-Sesma A, Kim C, Rossignol JF, Wilson AA, Zwaka T, Kotton DN, Mühlberger E, García-Sastre A, and Goldfeld AE
- Abstract
A well-tolerated and cost-effective oral drug that blocks SARS-CoV-2 growth and dissemination would be a major advance in the global effort to reduce COVID-19 morbidity and mortality. Here, we show that the oral FDA-approved drug nitazoxanide (NTZ) significantly inhibits SARS-CoV-2 viral replication and infection in different primate and human cell models including stem cell-derived human alveolar epithelial type 2 cells. Furthermore, NTZ synergizes with remdesivir, and it broadly inhibits growth of SARS-CoV-2 variants B.1.351 (beta), P.1 (gamma), and B.1617.2 (delta) and viral syncytia formation driven by their spike proteins. Strikingly, oral NTZ treatment of Syrian hamsters significantly inhibits SARS-CoV-2-driven weight loss, inflammation, and viral dissemination and syncytia formation in the lungs. These studies show that NTZ is a novel host-directed therapeutic that broadly inhibits SARS-CoV-2 dissemination and pathogenesis in human and hamster physiological models, which supports further testing and optimization of NTZ-based therapy for SARS-CoV-2 infection alone and in combination with antiviral drugs.
- Published
- 2022
- Full Text
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