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3 results on '"Cabus, Mehtap"'

1. Correlates of protection against SARS-CoV-2 in rhesus macaques

Author

McMahan, Katherine, Yu, Jingyou, Mercado, Noe B., Loos, Carolin, Tostanoski, Lisa H., Chandrashekar, Abishek, Liu, Jinyan, Peter, Lauren, Atyeo, Caroline, Zhu, Alex, Bondzie, Esther A., Dagotto, Gabriel, Gebre, Makda S., Jacob-Dolan, Catherine, Li, Zhenfeng, Nampanya, Felix, Patel, Shivani, Pessaint, Laurent, Van Ry, Alex, Blade, Kelvin, Yalley-Ogunro, Jake, Cabus, Mehtap, Brown, Renita, Cook, Anthony, Teow, Elyse, Andersen, Hanne, Lewis, Mark G., Lauffenburger, Douglas A., Alter, Galit, and Barouch, Dan H.

Abstract

Recent studies have reported the protective efficacy of both natural1and vaccine-induced2–7immunity against challenge with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in rhesus macaques. However, the importance of humoral and cellular immunity for protection against infection with SARS-CoV-2 remains to be determined. Here we show that the adoptive transfer of purified IgG from convalescent rhesus macaques (Macaca mulatta) protects naive recipient macaques against challenge with SARS-CoV-2 in a dose-dependent fashion. Depletion of CD8+T cells in convalescent macaques partially abrogated the protective efficacy of natural immunity against rechallenge with SARS-CoV-2, which suggests a role for cellular immunity in the context of waning or subprotective antibody titres. These data demonstrate that relatively low antibody titres are sufficient for protection against SARS-CoV-2 in rhesus macaques, and that cellular immune responses may contribute to protection if antibody responses are suboptimal. We also show that higher antibody titres are required for treatment of SARS-CoV-2 infection in macaques. These findings have implications for the development of SARS-CoV-2 vaccines and immune-based therapeutic agents.

Published
2021
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2. Single-shot Ad26 vaccine protects against SARS-CoV-2 in rhesus macaques

Author

Mercado, Noe B., Zahn, Roland, Wegmann, Frank, Loos, Carolin, Chandrashekar, Abishek, Yu, Jingyou, Liu, Jinyan, Peter, Lauren, McMahan, Katherine, Tostanoski, Lisa H., He, Xuan, Martinez, David R., Rutten, Lucy, Bos, Rinke, van Manen, Danielle, Vellinga, Jort, Custers, Jerome, Langedijk, Johannes P., Kwaks, Ted, Bakkers, Mark J. G., Zuijdgeest, David, Rosendahl Huber, Sietske K., Atyeo, Caroline, Fischinger, Stephanie, Burke, John S., Feldman, Jared, Hauser, Blake M., Caradonna, Timothy M., Bondzie, Esther A., Dagotto, Gabriel, Gebre, Makda S., Hoffman, Emily, Jacob-Dolan, Catherine, Kirilova, Marinela, Li, Zhenfeng, Lin, Zijin, Mahrokhian, Shant H., Maxfield, Lori F., Nampanya, Felix, Nityanandam, Ramya, Nkolola, Joseph P., Patel, Shivani, Ventura, John D., Verrington, Kaylee, Wan, Huahua, Pessaint, Laurent, Van Ry, Alex, Blade, Kelvin, Strasbaugh, Amanda, Cabus, Mehtap, Brown, Renita, Cook, Anthony, Zouantchangadou, Serge, Teow, Elyse, Andersen, Hanne, Lewis, Mark G., Cai, Yongfei, Chen, Bing, Schmidt, Aaron G., Reeves, R. Keith, Baric, Ralph S., Lauffenburger, Douglas A., Alter, Galit, Stoffels, Paul, Mammen, Mathai, Van Hoof, Johan, Schuitemaker, Hanneke, and Barouch, Dan H.

Abstract

A safe and effective vaccine for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) may be required to end the coronavirus disease 2019 (COVID-19) pandemic1–8. For global deployment and pandemic control, a vaccine that requires only a single immunization would be optimal. Here we show the immunogenicity and protective efficacy of a single dose of adenovirus serotype 26 (Ad26) vector-based vaccines expressing the SARS-CoV-2 spike (S) protein in non-human primates. Fifty-two rhesus macaques (Macaca mulatta) were immunized with Ad26 vectors that encoded S variants or sham control, and then challenged with SARS-CoV-2 by the intranasal and intratracheal routes9,10. The optimal Ad26 vaccine induced robust neutralizing antibody responses and provided complete or near-complete protection in bronchoalveolar lavage and nasal swabs after SARS-CoV-2 challenge. Titres of vaccine-elicited neutralizing antibodies correlated with protective efficacy, suggesting an immune correlate of protection. These data demonstrate robust single-shot vaccine protection against SARS-CoV-2 in non-human primates. The optimal Ad26 vector-based vaccine for SARS-CoV-2, termed Ad26.COV2.S, is currently being evaluated in clinical trials.

Published
2020
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3. Publisher Correction: Single-shot Ad26 vaccine protects against SARS-CoV-2 in rhesus macaques

Author

Mercado, Noe B., Zahn, Roland, Wegmann, Frank, Loos, Carolin, Chandrashekar, Abishek, Yu, Jingyou, Liu, Jinyan, Peter, Lauren, McMahan, Katherine, Tostanoski, Lisa H., He, Xuan, Martinez, David R., Rutten, Lucy, Bos, Rinke, van Manen, Danielle, Vellinga, Jort, Custers, Jerome, Langedijk, Johannes P., Kwaks, Ted, Bakkers, Mark J. G., Zuijdgeest, David, Huber, Sietske K. Rosendahl, Atyeo, Caroline, Fischinger, Stephanie, Burke, John S., Feldman, Jared, Hauser, Blake M., Caradonna, Timothy M., Bondzie, Esther A., Dagotto, Gabriel, Gebre, Makda S., Hoffman, Emily, Jacob-Dolan, Catherine, Kirilova, Marinela, Li, Zhenfeng, Lin, Zijin, Mahrokhian, Shant H., Maxfield, Lori F., Nampanya, Felix, Nityanandam, Ramya, Nkolola, Joseph P., Patel, Shivani, Ventura, John D., Verrington, Kaylee, Wan, Huahua, Pessaint, Laurent, Van Ry, Alex, Blade, Kelvin, Strasbaugh, Amanda, Cabus, Mehtap, Brown, Renita, Cook, Anthony, Zouantchangadou, Serge, Teow, Elyse, Andersen, Hanne, Lewis, Mark G., Cai, Yongfei, Chen, Bing, Schmidt, Aaron G., Reeves, R. Keith, Baric, Ralph S., Lauffenburger, Douglas A., Alter, Galit, Stoffels, Paul, Mammen, Mathai, Van Hoof, Johan, Schuitemaker, Hanneke, and Barouch, Dan H.

Abstract

A Correction to this paper has been published: https://doi.org/10.1038/s41586-020-03100-y

Published
2021
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