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  1. AU="Van Ry, Alex"
  2. AU="Winniecia Dkhar"
  3. AU="Echeverria Correa, Luis E"
  4. AU="Nash, Robert J."
  5. AU="Anastasia Xourafa"
  6. AU="Koch, Flávia"
  7. AU="Stroo, Esther"
  8. AU="Bauer, B."
  9. AU="Heidorn, Marc William"
  10. AU="Doan, Ryan N"
  11. AU=Kovo Michal
  12. AU="Gaglani, Shiv"
  13. AU="Prathap G"
  14. AU="Luana Bessa"

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  1. Artikel ; Online: Strong immunogenicity & protection in mice with PlaCCine: A COVID-19 DNA vaccine formulated with a functional polymer.

    Sood, Subeena / Matar, Majed M / Kim, Jessica / Kinsella, Meredyth / Rayavara, Kempaiah / Signer, Olivia / Henderson, John / Rogers, Joseph / Chawla, Bhavna / Narvaez, Brandon / Van Ry, Alex / Kar, Swagata / Arnold, Austin / Rice, Jennifer S / Smith, Alanna M / Su, Daishui / Sparks, Jeff / Le Goff, Corinne / Boyer, Jean D /
    Anwer, Khursheed

    Vaccine

    2024  Band 42, Heft 6, Seite(n) 1300–1310

    Abstract: DNA- based vaccines have demonstrated the potential as a safe and effective modality. PlaCCine, a DNA-based vaccine approach described subsequently relies on a synthetic DNA delivery system and is independent of virus or device. The synthetic ... ...

    Abstract DNA- based vaccines have demonstrated the potential as a safe and effective modality. PlaCCine, a DNA-based vaccine approach described subsequently relies on a synthetic DNA delivery system and is independent of virus or device. The synthetic functionalized polymer combined with DNA demonstrated stability over 12 months at 4C and for one month at 25C. Transfection efficiency compared to naked DNA increased by 5-15-fold in murine skeletal muscle. Studies of DNA vaccines expressing spike proteins from variants D614G (pVAC15), Delta (pVAC16), or a D614G + Delta combination (pVAC17) were conducted. Mice immunized intramuscular injection (IM) with pVAC15, pVAC16 or pVAC17 formulated with functionalized polymer and adjuvant resulted in induction of spike-specific humoral and cellular responses. Antibody responses were observed after one immunization. And endpoint IgG titers increased to greater than 1x 10
    Mesh-Begriff(e) Mice ; Animals ; COVID-19 Vaccines ; Vaccines, DNA ; COVID-19/prevention & control ; SARS-CoV-2 ; Mice, Transgenic ; Antibodies, Neutralizing ; DNA ; Antibodies, Viral ; Spike Glycoprotein, Coronavirus/genetics ; Immunogenicity, Vaccine
    Chemische Substanzen COVID-19 Vaccines ; Vaccines, DNA ; Antibodies, Neutralizing ; DNA (9007-49-2) ; Antibodies, Viral ; Spike Glycoprotein, Coronavirus ; spike protein, SARS-CoV-2
    Sprache Englisch
    Erscheinungsdatum 2024-02-01
    Erscheinungsland Netherlands
    Dokumenttyp Journal Article
    ZDB-ID 605674-x
    ISSN 1873-2518 ; 0264-410X
    ISSN (online) 1873-2518
    ISSN 0264-410X
    DOI 10.1016/j.vaccine.2024.01.065
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  2. Artikel ; Online: A Recombinant Subunit Vaccine Induces a Potent, Broadly Neutralizing, and Durable Antibody Response in Macaques against the SARS-CoV-2 P.1 (Gamma) Variant.

    To, Albert / Wong, Teri Ann S / Lieberman, Michael M / Thompson, Karen / Ball, Aquena H / Pessaint, Laurent / Greenhouse, Jack / Daham, Nisrine / Cook, Anthony / Narvaez, Brandon / Flinchbaugh, Zack / Van Ry, Alex / Yalley-Ogunro, Jake / Andersen Elyard, Hanne / Lai, Chih-Yun / Donini, Oreola / Lehrer, Axel T

    ACS infectious diseases

    2022  Band 8, Heft 4, Seite(n) 825–840

    Abstract: FDA-approved and emergency use-authorized vaccines using new mRNA and viral-vector technology are highly effective in preventing moderate to severe disease; however, information on their long-term efficacy and protective breadth against severe acute ... ...

    Abstract FDA-approved and emergency use-authorized vaccines using new mRNA and viral-vector technology are highly effective in preventing moderate to severe disease; however, information on their long-term efficacy and protective breadth against severe acute respiratory syndrome coronavirus 2 variants of concern (VOCs) is currently scarce. Here, we describe the durability and broad-spectrum VOC immunity of a prefusion-stabilized spike (S) protein adjuvanted with liquid or lyophilized CoVaccine HT in cynomolgus macaques. This recombinant subunit vaccine is highly immunogenic and induces robust spike-specific and broadly neutralizing antibody responses effective against circulating VOCs (B.1.351 [Beta], P.1 [Gamma], and B.1.617 [Delta]) for at least three months after the final boost. Protective efficacy and postexposure immunity were evaluated using a heterologous P.1 challenge nearly three months after the last immunization. Our results indicate that while immunization with both high and low S doses shorten and reduce viral loads in the upper and lower respiratory tract, a higher antigen dose is required to provide durable protection against disease as vaccine immunity wanes. Histologically, P.1 infection causes similar COVID-19-like lung pathology as seen with early pandemic isolates. Postchallenge IgG concentrations were restored to peak immunity levels, and vaccine-matched and cross-variant neutralizing antibodies were significantly elevated in immunized macaques indicating an efficient anamnestic response. Only low levels of P.1-specific neutralizing antibodies with limited breadth were observed in control (nonvaccinated but challenged) macaques, suggesting that natural infection may not prevent reinfection by other VOCs. Overall, these results demonstrate that a properly dosed and adjuvanted recombinant subunit vaccine can provide protective immunity against circulating VOCs for at least three months.
    Mesh-Begriff(e) Adjuvants, Immunologic ; Animals ; Antibodies, Neutralizing ; Antibodies, Viral ; Antibody Formation ; COVID-19/prevention & control ; COVID-19 Vaccines ; Humans ; Macaca ; SARS-CoV-2 ; Vaccines, Subunit
    Chemische Substanzen Adjuvants, Immunologic ; Antibodies, Neutralizing ; Antibodies, Viral ; COVID-19 Vaccines ; Vaccines, Subunit
    Sprache Englisch
    Erscheinungsdatum 2022-03-09
    Erscheinungsland United States
    Dokumenttyp Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ISSN 2373-8227
    ISSN (online) 2373-8227
    DOI 10.1021/acsinfecdis.1c00600
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  3. Artikel ; Online: One dose of COVID-19 nanoparticle vaccine REVC-128 protects against SARS-CoV-2 challenge at two weeks post-immunization.

    Gu, Maggie / Torres, Jonathan L / Li, Yijia / Van Ry, Alex / Greenhouse, Jack / Wallace, Shannon / Chiang, Chi-I / Pessaint, Laurent / Jackson, Abigail M / Porto, Maciel / Kar, Swagata / Li, Yuxing / Ward, Andrew B / Wang, Yimeng

    Emerging microbes & infections

    2021  Band 10, Heft 1, Seite(n) 2016–2029

    Abstract: ... ...

    Abstract ABSTRACT
    Mesh-Begriff(e) Animals ; Antibodies, Neutralizing ; Antibodies, Viral/blood ; Antibody Formation ; COVID-19/prevention & control ; COVID-19 Vaccines/administration & dosage ; COVID-19 Vaccines/immunology ; Cricetinae ; Humans ; Immunization ; Immunization Schedule ; Immunogenicity, Vaccine ; Mesocricetus ; Mice ; Nanoparticles/chemistry ; SARS-CoV-2 ; Spike Glycoprotein, Coronavirus ; Vaccination ; Viral Load
    Chemische Substanzen Antibodies, Neutralizing ; Antibodies, Viral ; COVID-19 Vaccines ; Spike Glycoprotein, Coronavirus
    Sprache Englisch
    Erscheinungsdatum 2021-10-12
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 2681359-2
    ISSN 2222-1751 ; 2222-1751
    ISSN (online) 2222-1751
    ISSN 2222-1751
    DOI 10.1080/22221751.2021.1994354
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  4. Artikel ; Online: Defining the determinants of protection against SARS-CoV-2 infection and viral control in a dose-down Ad26.CoV2.S vaccine study in nonhuman primates.

    Zhu, Daniel Y / Gorman, Matthew J / Yuan, Dansu / Yu, Jingyou / Mercado, Noe B / McMahan, Katherine / Borducchi, Erica N / Lifton, Michelle / Liu, Jinyan / Nampanya, Felix / Patel, Shivani / Peter, Lauren / Tostanoski, Lisa H / Pessaint, Laurent / Van Ry, Alex / Finneyfrock, Brad / Velasco, Jason / Teow, Elyse / Brown, Renita /
    Cook, Anthony / Andersen, Hanne / Lewis, Mark G / Lauffenburger, Douglas A / Barouch, Dan H / Alter, Galit

    PLoS biology

    2022  Band 20, Heft 5, Seite(n) e3001609

    Abstract: Despite the rapid creation of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) vaccines, the precise correlates of immunity against severe Coronavirus Disease 2019 (COVID-19) are still unknown. Neutralizing antibodies represent a robust ... ...

    Abstract Despite the rapid creation of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) vaccines, the precise correlates of immunity against severe Coronavirus Disease 2019 (COVID-19) are still unknown. Neutralizing antibodies represent a robust surrogate of protection in early Phase III studies, but vaccines provide protection prior to the evolution of neutralization, vaccines provide protection against variants that evade neutralization, and vaccines continue to provide protection against disease severity in the setting of waning neutralizing titers. Thus, in this study, using an Ad26.CoV2.S dose-down approach in nonhuman primates (NHPs), the role of neutralization, Fc effector function, and T-cell immunity were collectively probed against infection as well as against viral control. While dosing-down minimally impacted neutralizing and binding antibody titers, Fc receptor binding and functional antibody levels were induced in a highly dose-dependent manner. Neutralizing antibody and Fc receptor binding titers, but minimally T cells, were linked to the prevention of transmission. Conversely, Fc receptor binding/function and T cells were linked to antiviral control, with a minimal role for neutralization. These data point to dichotomous roles of neutralization and T-cell function in protection against transmission and disease severity and a continuous role for Fc effector function as a correlate of immunity key to halting and controlling SARS-CoV-2 and emerging variants.
    Mesh-Begriff(e) Ad26COVS1 ; Animals ; Antibodies, Neutralizing ; Antibodies, Viral ; COVID-19/prevention & control ; COVID-19 Vaccines ; Humans ; Primates ; Receptors, Fc ; SARS-CoV-2 ; Spike Glycoprotein, Coronavirus
    Chemische Substanzen Ad26COVS1 (JT2NS6183B) ; Antibodies, Neutralizing ; Antibodies, Viral ; COVID-19 Vaccines ; Receptors, Fc ; Spike Glycoprotein, Coronavirus ; spike protein, SARS-CoV-2
    Sprache Englisch
    Erscheinungsdatum 2022-05-05
    Erscheinungsland United States
    Dokumenttyp Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 2126776-5
    ISSN 1545-7885 ; 1544-9173
    ISSN (online) 1545-7885
    ISSN 1544-9173
    DOI 10.1371/journal.pbio.3001609
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  5. Artikel: RBD-based high affinity ACE2 antagonist limits SARS-CoV-2 replication in upper and lower airways.

    Gagne, Matthew / Flynn, Barbara J / Honeycutt, Christopher Cole / Flebbe, Dillon R / Andrew, Shayne F / Provost, Samantha J / McCormick, Lauren / Van Ry, Alex / McCarthy, Elizabeth / Todd, John-Paul M / Bao, Saran / Teng, I-Ting / Marciano, Shir / Rudich, Yinon / Li, Chunlin / Pessaint, Laurent / Dodson, Alan / Cook, Anthony / Lewis, Mark G /
    Andersen, Hanne / Zahradník, Jiří / Nason, Martha C / Foulds, Kathryn E / Kwong, Peter D / Roederer, Mario / Schreiber, Gideon / Seder, Robert A / Douek, Daniel C

    bioRxiv : the preprint server for biology

    2023  

    Abstract: SARS-CoV-2 has the capacity to evolve mutations to escape vaccine-and infection-acquired immunity and antiviral drugs. A variant-agnostic therapeutic agent that protects against severe disease without putting selective pressure on the virus would thus be ...

    Abstract SARS-CoV-2 has the capacity to evolve mutations to escape vaccine-and infection-acquired immunity and antiviral drugs. A variant-agnostic therapeutic agent that protects against severe disease without putting selective pressure on the virus would thus be a valuable biomedical tool. Here, we challenged rhesus macaques with SARS-CoV-2 Delta and simultaneously treated them with aerosolized RBD-62, a protein developed through multiple rounds of
    Sprache Englisch
    Erscheinungsdatum 2023-06-12
    Erscheinungsland United States
    Dokumenttyp Preprint
    DOI 10.1101/2023.06.09.544432
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  6. Artikel ; Online: Strong immunogenicity & protection in mice with PlaCCine: A COVID-19 DNA vaccine formulated with a functional polymer

    Sood, Subeena / Matar, Majed M. / Kim, Jessica / Kinsella, Meredyth / Rayavara, Kempaiah / Signer, Olivia / Henderson, John / Rogers, Joseph / Chawla, Bhavna / Narvaez, Brandon / Van Ry, Alex / Kar, Swagata / Arnold, Austin / Rice, Jennifer S. / Smith, Alanna M. / Su, Daishui / Sparks, Jeff / Goff, Corinne Le / Boyer, Jean D. /
    Anwer, Khursheed

    bioRxiv

    Abstract: DNA- based vaccines have demonstrated the potential as a safe and effective modality. PlaCCine, a DNA-based vaccine approach described subsequently relies on a synthetic DNA delivery system and is independent of virus or device. The synthetic ... ...

    Abstract DNA- based vaccines have demonstrated the potential as a safe and effective modality. PlaCCine, a DNA-based vaccine approach described subsequently relies on a synthetic DNA delivery system and is independent of virus or device. The synthetic functionalized polymer combined with DNA demonstrated stability over 12 months at 4C and for one month at 25C. Transfection efficiency compared to naked DNA increased by 5-15-fold in murine skeletal muscle. Studies of DNA vaccines expressing spike proteins from variants D614G (pVAC15), Delta (pVAC16), or a D614G + Delta combination (pVAC17) were conducted. Mice immunized intramuscular injection (IM) with pVAC15, pVAC16 or pVAC17 formulated with functionalized polymer and adjuvant resulted in induction of spike-specific humoral and cellular responses. Antibody responses were observed after one immunization. And endpoint IgG titers increased to greater than 1x 105 two weeks after the second injection. Neutralizing antibodies as determined by a pseudovirus competition assay were observed following vaccination with pVAC15, pVAC16 or pVAC17. Spike specific T cell immune responses were also observed following vaccination and flow cytometry analysis demonstrated the cellular immune responses included both CD4 and CD8 spike specific T cells. The immune responses in vaccinated mice were maintained for up to 14 months after vaccination. In an immunization and challenge study of K18 hACE2 transgenic mice pVAC15, pVAC16 and pVAC17 induced immune responses lead to decreased lung viral loads by greater than 90% along with improved clinical score. These findings suggest that PlaCCine DNA vaccines are effective and stable and further development against emerging SARS-CoV-2 variants is warranted.
    Schlagwörter covid19
    Sprache Englisch
    Erscheinungsdatum 2023-08-02
    Verlag Cold Spring Harbor Laboratory
    Dokumenttyp Artikel ; Online
    DOI 10.1101/2023.08.01.551509
    Datenquelle COVID19

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  7. Artikel ; Online: Protein Vaccine Induces a Durable, More Broadly Neutralizing Antibody Response in Macaques than Natural Infection with SARS-CoV-2 P.1

    To, Albert / Wong, Teri Ann S / Lieberman, Michael M / Thompson, Karen S / Pessaint, Laurent / Greenhouse, Jack / Daham, Nisrine / Cook, Anthony / Narvaez, Brandon / Flinchbaugh, Zack / Van Ry, Alex / Yalley-Ogunro, Jake / Andersen, Hanne / Lai, Chih-Yun / Donini, Oreola / Lehrer, Axel T

    bioRxiv

    Abstract: FDA-approved and Emergency Use Authorized (EUA) vaccines using new mRNA and viral-vector technology are highly effective in preventing moderate to severe disease, however, information on their long-term efficacy and protective breadth against SARS-CoV-2 ... ...

    Abstract FDA-approved and Emergency Use Authorized (EUA) vaccines using new mRNA and viral-vector technology are highly effective in preventing moderate to severe disease, however, information on their long-term efficacy and protective breadth against SARS-CoV-2 Variants of Concern (VOCs) is currently scarce. Here we describe the durability and broad-spectrum VOC immunity of a prefusion-stabilized spike (S) protein adjuvanted with liquid or lyophilized CoVaccine HTTM in cynomolgus macaques. This recombinant subunit vaccine is highly immunogenic and induces robust spike-specific and broadly neutralizing antibody responses effective against circulating VOCs (B.1.351 [Beta], P.1 [Gamma], B.1.617 [Delta]) for at least 3 months after the final boost. Protective efficacy and post-exposure immunity were evaluated using a heterologous P.1 challenge nearly 3 months after the last immunization. Our results indicate that while immunization with both high and low S doses shorten and reduce viral loads in the upper and lower respiratory tract, a higher antigen dose is required to provide durable protection against disease as vaccine immunity wanes. Histologically, P.1 infection causes similar COVID-19-like lung pathology as seen with early pandemic isolates. Post-challenge IgG concentrations were restored to peak immunity levels and vaccine-matched and cross-variant neutralizing antibodies were significantly elevated in immunized macaques indicating an efficient anamnestic response. Only low levels of P.1-specific neutralizing antibodies with limited breadth were observed in control (non-vaccinated but challenged) macaques suggesting that natural infection may not prevent reinfection by other VOCs. Overall, these results demonstrate that a properly dosed and adjuvanted recombinant subunit vaccine can provide long-lasting and protective immunity against circulating VOCs.
    Schlagwörter covid19
    Sprache Englisch
    Erscheinungsdatum 2021-09-25
    Verlag Cold Spring Harbor Laboratory
    Dokumenttyp Artikel ; Online
    DOI 10.1101/2021.09.24.461759
    Datenquelle COVID19

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  8. Artikel: Low-dose Ad26.COV2.S protection against SARS-CoV-2 challenge in rhesus macaques

    He, Xuan / Chandrashekar, Abishek / Zahn, Roland / Wegmann, Frank / Yu, Jingyou / Mercado, Noe B. / McMahan, Katherine / Martinot, Amanda J. / Piedra-Mora, Cesar / Beecy, Sidney / Ducat, Sarah / Chamanza, Ronnie / Huber, Sietske Rosendahl / van Heerden, Marjolein / van der Fits, Leslie / Borducchi, Erica N. / Lifton, Michelle / Liu, Jinyan / Nampanya, Felix /
    Patel, Shivani / Peter, Lauren / Tostanoski, Lisa H. / Pessaint, Laurent / Van Ry, Alex / Finneyfrock, Brad / Velasco, Jason / Teow, Elyse / Brown, Renita / Cook, Anthony / Andersen, Hanne / Lewis, Mark G. / Schuitemaker, Hanneke / Barouch, Dan H.

    Cell. 2021 June 24, v. 184, no. 13

    2021  

    Abstract: We previously reported that a single immunization with an adenovirus serotype 26 (Ad26)-vector-based vaccine expressing an optimized SARS-CoV-2 spike (Ad26.COV2.S) protected rhesus macaques against SARS-CoV-2 challenge. To evaluate reduced doses of Ad26 ... ...

    Abstract We previously reported that a single immunization with an adenovirus serotype 26 (Ad26)-vector-based vaccine expressing an optimized SARS-CoV-2 spike (Ad26.COV2.S) protected rhesus macaques against SARS-CoV-2 challenge. To evaluate reduced doses of Ad26.COV2.S, 30 rhesus macaques were immunized once with 1 × 10¹¹, 5 × 10¹⁰, 1.125 × 10¹⁰, or 2 × 10⁹ viral particles (vp) Ad26.COV2.S or sham and were challenged with SARS-CoV-2. Vaccine doses as low as 2 × 10⁹ vp provided robust protection in bronchoalveolar lavage, whereas doses of 1.125 × 10¹⁰ vp were required for protection in nasal swabs. Activated memory B cells and binding or neutralizing antibody titers following vaccination correlated with protective efficacy. At suboptimal vaccine doses, viral breakthrough was observed but did not show enhancement of disease. These data demonstrate that a single immunization with relatively low dose of Ad26.COV2.S effectively protected against SARS-CoV-2 challenge in rhesus macaques, although a higher vaccine dose may be required for protection in the upper respiratory tract.
    Schlagwörter Severe acute respiratory syndrome coronavirus 2 ; memory ; nose ; serotypes ; vaccination ; vaccines
    Sprache Englisch
    Erscheinungsverlauf 2021-0624
    Umfang p. 3467-3473.e11.
    Erscheinungsort Elsevier Inc.
    Dokumenttyp Artikel
    ZDB-ID 187009-9
    ISSN 1097-4172 ; 0092-8674
    ISSN (online) 1097-4172
    ISSN 0092-8674
    DOI 10.1016/j.cell.2021.05.040
    Datenquelle NAL Katalog (AGRICOLA)

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  9. Artikel: Vaccine Protection Against the SARS-CoV-2 Omicron Variant in Macaques.

    Chandrashekar, Abishek / Yu, Jingyou / McMahan, Katherine / Jacob-Dolan, Catherine / Liu, Jinyan / He, Xuan / Hope, David / Anioke, Tochi / Barrett, Julia / Chung, Benjamin / Hachmann, Nicole P / Lifton, Michelle / Miller, Jessica / Powers, Olivia / Sciacca, Michaela / Sellers, Daniel / Siamatu, Mazuba / Surve, Nehalee / VanWyk, Haley /
    Wan, Huahua / Wu, Cindy / Pessaint, Laurent / Valentin, Daniel / Van Ry, Alex / Muench, Jeanne / Boursiquot, Mona / Cook, Anthony / Velasco, Jason / Teow, Elyse / Boon, Adrianus C M / Suthar, Mehul S / Jain, Neharika / Martinot, Amanda J / Lewis, Mark G / Andersen, Hanne / Barouch, Dan H

    bioRxiv : the preprint server for biology

    2022  

    Abstract: Background: The rapid spread of the SARS-CoV-2 Omicron (B.1.1.529) variant, including in highly vaccinated populations, has raised important questions about the efficacy of current vaccines. Immune correlates of vaccine protection against Omicron are ... ...

    Abstract Background: The rapid spread of the SARS-CoV-2 Omicron (B.1.1.529) variant, including in highly vaccinated populations, has raised important questions about the efficacy of current vaccines. Immune correlates of vaccine protection against Omicron are not known.
    Methods: 30 cynomolgus macaques were immunized with homologous and heterologous prime-boost regimens with the mRNA-based BNT162b2 vaccine and the adenovirus vector-based Ad26.COV2.S vaccine. Following vaccination, animals were challenged with the SARS-CoV-2 Omicron variant by the intranasal and intratracheal routes.
    Results: Omicron neutralizing antibodies were observed following the boost immunization and were higher in animals that received BNT162b2, whereas Omicron CD8+ T cell responses were higher in animals that received Ad26.COV2.S. Following Omicron challenge, sham controls showed more prolonged virus in nasal swabs than in bronchoalveolar lavage. Vaccinated macaques demonstrated rapid control of virus in bronchoalveolar lavage, and most vaccinated animals also controlled virus in nasal swabs, showing that current vaccines provide substantial protection against Omicron in this model. However, vaccinated animals that had moderate levels of Omicron neutralizing antibodies but negligible Omicron CD8+ T cell responses failed to control virus in the upper respiratory tract. Virologic control correlated with both antibody and T cell responses.
    Conclusions: BNT162b2 and Ad26.COV2.S provided robust protection against high-dose challenge with the SARS-CoV-2 Omicron variant in macaques. Protection against this highly mutated SARS-CoV-2 variant correlated with both humoral and cellular immune responses.
    Sprache Englisch
    Erscheinungsdatum 2022-02-07
    Erscheinungsland United States
    Dokumenttyp Preprint
    DOI 10.1101/2022.02.06.479285
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  10. Artikel ; Online: Vaccine protection against the SARS-CoV-2 Omicron variant in macaques.

    Chandrashekar, Abishek / Yu, Jingyou / McMahan, Katherine / Jacob-Dolan, Catherine / Liu, Jinyan / He, Xuan / Hope, David / Anioke, Tochi / Barrett, Julia / Chung, Benjamin / Hachmann, Nicole P / Lifton, Michelle / Miller, Jessica / Powers, Olivia / Sciacca, Michaela / Sellers, Daniel / Siamatu, Mazuba / Surve, Nehalee / VanWyk, Haley /
    Wan, Huahua / Wu, Cindy / Pessaint, Laurent / Valentin, Daniel / Van Ry, Alex / Muench, Jeanne / Boursiquot, Mona / Cook, Anthony / Velasco, Jason / Teow, Elyse / Boon, Adrianus C M / Suthar, Mehul S / Jain, Neharika / Martinot, Amanda J / Lewis, Mark G / Andersen, Hanne / Barouch, Dan H

    Cell

    2022  Band 185, Heft 9, Seite(n) 1549–1555.e11

    Abstract: The rapid spread of the SARS-CoV-2 Omicron (B.1.1.529) variant, including in highly vaccinated populations, has raised important questions about the efficacy of current vaccines. In this study, we show that the mRNA-based BNT162b2 vaccine and the ... ...

    Abstract The rapid spread of the SARS-CoV-2 Omicron (B.1.1.529) variant, including in highly vaccinated populations, has raised important questions about the efficacy of current vaccines. In this study, we show that the mRNA-based BNT162b2 vaccine and the adenovirus-vector-based Ad26.COV2.S vaccine provide robust protection against high-dose challenge with the SARS-CoV-2 Omicron variant in cynomolgus macaques. We vaccinated 30 macaques with homologous and heterologous prime-boost regimens with BNT162b2 and Ad26.COV2.S. Following Omicron challenge, vaccinated macaques demonstrated rapid control of virus in bronchoalveolar lavage, and most vaccinated animals also controlled virus in nasal swabs. However, 4 vaccinated animals that had moderate Omicron-neutralizing antibody titers and undetectable Omicron CD8+ T cell responses failed to control virus in the upper respiratory tract. Moreover, virologic control correlated with both antibody and T cell responses. These data suggest that both humoral and cellular immune responses contribute to vaccine protection against a highly mutated SARS-CoV-2 variant.
    Mesh-Begriff(e) Ad26COVS1/administration & dosage ; Ad26COVS1/immunology ; Animals ; Antibodies, Neutralizing ; Antibodies, Viral ; BNT162 Vaccine/administration & dosage ; BNT162 Vaccine/immunology ; COVID-19/immunology ; COVID-19/prevention & control ; Macaca ; SARS-CoV-2 ; T-Lymphocytes/immunology
    Chemische Substanzen Ad26COVS1 (JT2NS6183B) ; Antibodies, Neutralizing ; Antibodies, Viral ; BNT162 Vaccine (N38TVC63NU)
    Sprache Englisch
    Erscheinungsdatum 2022-03-17
    Erscheinungsland United States
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural
    ZDB-ID 187009-9
    ISSN 1097-4172 ; 0092-8674
    ISSN (online) 1097-4172
    ISSN 0092-8674
    DOI 10.1016/j.cell.2022.03.024
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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