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Casado-Fernández G, Cantón J, Nasarre L, Ramos-Martín F, Manzanares M, Sánchez-Menéndez C, Fuertes D, Mateos E, Murciano-Antón MA, Pérez-Olmeda M, Cervero M, Torres M, Rodríguez-Rosado R, Coiras M. Pre-existing cell populations with cytotoxic activity against SARS-CoV-2 in people with HIV and normal CD4/CD8 ratio previously unexposed to the virus. Front Immunol 2024; 15:1362621. [PMID: 38812512 PMCID: PMC11133563 DOI: 10.3389/fimmu.2024.1362621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Accepted: 05/01/2024] [Indexed: 05/31/2024] Open
Abstract
Introduction HIV-1 infection may produce a detrimental effect on the immune response. Early start of antiretroviral therapy (ART) is recommended to preserve the integrity of the immune system. In fact, people with HIV (PWH) and normal CD4/CD8 ratio appear not to be more susceptible to severe forms of COVID-19 than the general population and they usually present a good seroconversion rate in response to vaccination against SARS-CoV-2. However, few studies have fully characterized the development of cytotoxic immune populations in response to COVID-19 vaccination in these individuals. Methods In this study, we recruited PWH with median time of HIV-1 infection of 6 years, median CD4/CD8 ratio of 1.0, good adherence to ART, persistently undetectable viral load, and negative serology against SARS-CoV-2, who then received the complete vaccination schedule against COVID-19. Blood samples were taken before vaccination against COVID-19 and one month after receiving the complete vaccination schedule. Results PWH produced high levels of IgG against SARS-CoV-2 in response to vaccination that were comparable to healthy donors, with a significantly higher neutralization capacity. Interestingly, the cytotoxic activity of PBMCs from PWH against SARS-CoV-2-infected cells was higher than healthy donors before receiving the vaccination schedule, pointing out the pre-existence of activated cell populations with likely unspecific antiviral activity. The characterization of these cytotoxic cell populations revealed high levels of Tgd cells with degranulation capacity against SARS-CoV-2-infected cells. In response to vaccination, the degranulation capacity of CD8+ T cells also increased in PWH but not in healthy donors. Discussion The full vaccination schedule against COVID-19 did not modify the ability to respond against HIV-1-infected cells in PWH and these individuals did not show more susceptibility to breakthrough infection with SARS-CoV-2 than healthy donors after 12 months of follow-up. These results revealed the development of protective cell populations with broad-spectrum antiviral activity in PWH with normal CD4/CD8 ratio and confirmed the importance of early ART and treatment adherence to avoid immune dysfunctions.
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Affiliation(s)
- Guiomar Casado-Fernández
- Immunopathology and Viral Reservoir Unit, National Center of Microbiology, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
- PhD Program in Health Sciences, Faculty of Sciences, Universidad de Alcalá, Alcalá de Henares, Spain
| | - Juan Cantón
- PhD Program in Health Sciences, Faculty of Sciences, Universidad de Alcalá, Alcalá de Henares, Spain
- Internal Medicine Service, Hospital Universitario Severo Ochoa, Leganés, Madrid, Spain
| | - Laura Nasarre
- Immunopathology and Viral Reservoir Unit, National Center of Microbiology, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
| | - Fernando Ramos-Martín
- Immunopathology and Viral Reservoir Unit, National Center of Microbiology, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
| | - Mario Manzanares
- Immunopathology and Viral Reservoir Unit, National Center of Microbiology, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
- PhD Program in Biomedical Sciences and Public Health, Universidad Nacional de Educación a Distancia (UNED), Madrid, Spain
| | - Clara Sánchez-Menéndez
- Immunopathology and Viral Reservoir Unit, National Center of Microbiology, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
- PhD Program in Biomedical Sciences and Public Health, Universidad Nacional de Educación a Distancia (UNED), Madrid, Spain
- Hematology and Hemotherapy Service, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - Daniel Fuertes
- School of Telecommunications Engineering, Universidad Politécnica de Madrid, Madrid, Spain
| | - Elena Mateos
- Immunopathology and Viral Reservoir Unit, National Center of Microbiology, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
- Biomedical Research Center Network in Infectious Diseases [Centro de Investigación Biomédica en Red Enfermedades Infecciosas (CIBERINFEC)], Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
| | - María Aranzazu Murciano-Antón
- Family Medicine, Centro de Salud Doctor Pedro Laín Entralgo, Alcorcón, Madrid, Spain
- International PhD School, Universidad Rey Juan Carlos, Alcorcón, Madrid, Spain
| | - Mayte Pérez-Olmeda
- Biomedical Research Center Network in Infectious Diseases [Centro de Investigación Biomédica en Red Enfermedades Infecciosas (CIBERINFEC)], Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
- Serology Service, Instituto de Salud Carlos III, Madrid, Spain
| | - Miguel Cervero
- Internal Medicine Service, Hospital Universitario Severo Ochoa, Leganés, Madrid, Spain
- School of Medicine, Universidad Alfonso X El Sabio, Madrid, Spain
| | - Montserrat Torres
- Immunopathology and Viral Reservoir Unit, National Center of Microbiology, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
- Biomedical Research Center Network in Infectious Diseases [Centro de Investigación Biomédica en Red Enfermedades Infecciosas (CIBERINFEC)], Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
| | - Rafael Rodríguez-Rosado
- Internal Medicine Service, Hospital Universitario Severo Ochoa, Leganés, Madrid, Spain
- School of Medicine, Universidad Alfonso X El Sabio, Madrid, Spain
| | - Mayte Coiras
- Immunopathology and Viral Reservoir Unit, National Center of Microbiology, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
- Biomedical Research Center Network in Infectious Diseases [Centro de Investigación Biomédica en Red Enfermedades Infecciosas (CIBERINFEC)], Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
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Touizer E, Alrubayyi A, Ford R, Hussain N, Gerber PP, Shum HL, Rees-Spear C, Muir L, Gea-Mallorquí E, Kopycinski J, Jankovic D, Jeffery-Smith A, Pinder CL, Fox TA, Williams I, Mullender C, Maan I, Waters L, Johnson M, Madge S, Youle M, Barber TJ, Burns F, Kinloch S, Rowland-Jones S, Gilson R, Matheson NJ, Morris E, Peppa D, McCoy LE. Attenuated humoral responses in HIV after SARS-CoV-2 vaccination linked to B cell defects and altered immune profiles. iScience 2023; 26:105862. [PMID: 36590902 PMCID: PMC9788849 DOI: 10.1016/j.isci.2022.105862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 12/04/2022] [Accepted: 12/20/2022] [Indexed: 12/25/2022] Open
Abstract
We assessed a cohort of people living with human immunodeficiency virus (PLWH) (n = 110) and HIV negative controls (n = 64) after 1, 2 or 3 SARS-CoV-2 vaccine doses. At all timepoints, PLWH had significantly lower neutralizing antibody (nAb) titers than HIV-negative controls. We also observed a delayed development of neutralization in PLWH that was underpinned by a reduced frequency of spike-specific memory B cells (MBCs). Improved neutralization breadth was seen against the Omicron variant (BA.1) after the third vaccine dose in PLWH but lower nAb responses persisted and were associated with global MBC dysfunction. In contrast, SARS-CoV-2 vaccination induced robust T cell responses that cross-recognized variants in PLWH. Strikingly, individuals with low or absent neutralization had detectable functional T cell responses. These PLWH had reduced numbers of circulating T follicular helper cells and an enriched population of CXCR3+CD127+CD8+T cells after two doses of SARS-CoV-2 vaccination.
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Affiliation(s)
- Emma Touizer
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, London, UK
| | - Aljawharah Alrubayyi
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, London, UK
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Rosemarie Ford
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, London, UK
| | - Noshin Hussain
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, London, UK
| | - Pehuén Pereyra Gerber
- Cambridge Institute of Therapeutic Immunology and Infectious Disease, Department of Medicine, University of Cambridge, Cambridge, UK
| | - Hiu-Long Shum
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, London, UK
| | - Chloe Rees-Spear
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, London, UK
| | - Luke Muir
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, London, UK
| | | | - Jakub Kopycinski
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Dylan Jankovic
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, London, UK
| | - Anna Jeffery-Smith
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, London, UK
| | - Christopher L. Pinder
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, London, UK
| | - Thomas A. Fox
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, London, UK
| | - Ian Williams
- Mortimer Market Centre, Department of HIV, Central and North West London NHS Trust, London, UK
| | - Claire Mullender
- Institute for Global Health, University College London, London, UK
| | - Irfaan Maan
- Mortimer Market Centre, Department of HIV, Central and North West London NHS Trust, London, UK
- Institute for Global Health, University College London, London, UK
| | - Laura Waters
- Mortimer Market Centre, Department of HIV, Central and North West London NHS Trust, London, UK
| | - Margaret Johnson
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, London, UK
- The Ian Charleson Day Centre, Royal Free Hospital NHS Foundation Trust, London, UK
| | - Sara Madge
- The Ian Charleson Day Centre, Royal Free Hospital NHS Foundation Trust, London, UK
| | - Michael Youle
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, London, UK
- The Ian Charleson Day Centre, Royal Free Hospital NHS Foundation Trust, London, UK
| | - Tristan J. Barber
- Institute for Global Health, University College London, London, UK
- The Ian Charleson Day Centre, Royal Free Hospital NHS Foundation Trust, London, UK
| | - Fiona Burns
- Institute for Global Health, University College London, London, UK
- The Ian Charleson Day Centre, Royal Free Hospital NHS Foundation Trust, London, UK
| | - Sabine Kinloch
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, London, UK
- The Ian Charleson Day Centre, Royal Free Hospital NHS Foundation Trust, London, UK
| | | | - Richard Gilson
- Mortimer Market Centre, Department of HIV, Central and North West London NHS Trust, London, UK
- Institute for Global Health, University College London, London, UK
| | - Nicholas J. Matheson
- Cambridge Institute of Therapeutic Immunology and Infectious Disease, Department of Medicine, University of Cambridge, Cambridge, UK
- NHS Blood and Transplant, Cambridge, UK
| | - Emma Morris
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, London, UK
| | - Dimitra Peppa
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, London, UK
- Mortimer Market Centre, Department of HIV, Central and North West London NHS Trust, London, UK
- The Ian Charleson Day Centre, Royal Free Hospital NHS Foundation Trust, London, UK
| | - Laura E. McCoy
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, London, UK
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Wen Y, Guo W, Min Y, Zhong K, Zhang X, Xing X, Tong Y, Pan Y, Hong W, Cai W, Yu L. Patient-derived monoclonal antibodies to SARS-CoV-2 nucleocapsid protein N-terminal and C-terminal domains cross-react with their counterparts of SARS-CoV, but not other human betacoronaviruses. Front Immunol 2023; 14:1093709. [PMID: 36798118 PMCID: PMC9927002 DOI: 10.3389/fimmu.2023.1093709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 01/17/2023] [Indexed: 02/03/2023] Open
Abstract
Introduction SARS-CoV-2 nucleocapsid (N) protein plays a key role in multiple stages of the viral life cycle such as viral replication and assembly. This protein is more conserved than the Spike protein of the virus and can induce both humoral and cell-mediated immune responses, thereby becoming a target for clinical diagnosis and vaccine development. However, the immunogenic characteristics of this protein during natural infection are still not completely understood. Methods Patient-derived monoclonal antibodies (mAbs) against SARS-CoV-2 N protein were generated from memory B cells in the PBMCs using the antigen-specific B cell approach. For epitope mapping of the isolated hmAbs, a panel of series-truncated N proteins were used , which covered the N-terminal domain (NTD, aa 46-174 ) and C-terminal domain (CTD, aa 245-364 ), as well as the flanking regions of NTD and CTD. NTD- or CTD-specific Abs in the plasma from COVID-19 patients were also tested by ELISA method. Cross-binding of hmAbs or plasma Abs in COVID-19 patients to other human β-CoV N proteins was determined using the capture ELISA. Results We isolated five N-specific monoclonal antibodies (mAbs) from memory B cells in the peripheral blood of two convalescent COVID-19 patients. Epitope mapping revealed that three of the patient-derived mAbs (N3, N5 and N31) targeted the C-terminal domain (CTD), whereas two of the mAbs (N83 and 3B7) targeted the N-terminal domain (NTD) of SARS-CoV-2 N protein. All five patient-derived mAbs were cross-reactive to the N protein of SARS-CoV but showed little to no cross-reactivity to the N proteins of other human beta coronaviruses (β-CoVs). We also tested 52 plasma samples collected from convalescent COVID-19 patients for Abs against the N proteins of human β-CoVs and found that 78.8% of plasma samples showed detectable Abs against the N proteins of SARS-CoV-2 and SARS-CoV. No plasma sample had cross-reactive Abs to the N protein of MERS-CoV. Cross-reactive Abs to the N proteins of OC43 and HKU1 were detected in 36.5% (19/52) and 19.2% (10/52) of plasma samples, respectively. Discussion These results suggest that natural SARS-CoV-2 infection elicits cross-reactive Abs to the N protein of SARS-CoV and that the five patient-derived mAbs to SARS-CoV-2 N protein NTD and CTD cross-react with their counterparts of SARS-CoV, but not other human β-CoVs. Thus, these five patient-derived mAbs can potentially be used for developing the next generation of COVID-19 At-Home Test kits for rapid and specific screening of SARS-CoV-2 infection.
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Affiliation(s)
- Yingfen Wen
- Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - Wenjing Guo
- Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - Yuyi Min
- Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - Kexin Zhong
- Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - Xulei Zhang
- Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - Xiaomin Xing
- Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - Yuwei Tong
- Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - Yuejun Pan
- Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - Wenxin Hong
- Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - Weiping Cai
- Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - Lei Yu
- Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, China
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SARS-CoV-2 mRNA Dual Immunization Induces Innate Transcriptional Signatures, Establishes T-Cell Memory and Coordinates the Recall Response. Vaccines (Basel) 2023; 11:vaccines11010103. [PMID: 36679948 PMCID: PMC9861479 DOI: 10.3390/vaccines11010103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 12/23/2022] [Accepted: 12/28/2022] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND mRNA vaccines have played a crucial role in controlling the SARS-CoV-2 global pandemic. However, the immunological mechanisms involved in the induction, magnitude and longevity of mRNA-vaccine-induced protective immunity are still unclear. METHODS In our study, we used whole-RNA sequencing along with detailed immunophenotyping of antigen-specific T cells and humoral RBD-specific response to dual immunization with the Pfizer-BioNTech mRNA vaccine (BNT162b2) and correlated them with response to an additional dose, administered 10 months later, in order to comprehensively profile the immune response of healthy volunteers to BNT162b2. RESULTS Primary dual immunization induced upregulation of the Type I interferon pathway and generated spike protein (S)-specific IFN-γ+ and TNF-α+ CD4 T cells, S-specific memory CD4 T cells, and RBD-specific antibodies against SARS-CoV-2. S-specific CD4 T cells induced by the primary series correlated with the RBD-specific antibody titers to a third dose. CONCLUSIONS This study demonstrates the induction of both innate and adaptive immunity in response to the BNT162b2 mRNA vaccine in a coordinated manner and identifies the central role of primarily induced CD4+ T cells as a predictive biomarker of the magnitude of anamnestic immune response.
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Touizer E, Alrubbayi A, Ford R, Hussain N, Gerber PP, Shum HL, Rees-Spear C, Muir L, Gea-Mallorquí E, Kopycinski J, Jankovic D, Pinder C, Fox TA, Williams I, Mullender C, Maan I, Waters L, Johnson M, Madge S, Youle M, Barber T, Burns F, Kinloch S, Rowland-Jones S, Gilson R, Matheson NJ, Morris E, Peppa D, McCoy LE. Attenuated humoral responses in HIV infection after SARS-CoV-2 vaccination are linked to global B cell defects and cellular immune profiles. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2022:2022.11.11.516111. [PMID: 36380764 PMCID: PMC9665338 DOI: 10.1101/2022.11.11.516111] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
People living with HIV (PLWH) on suppressive antiretroviral therapy (ART) can have residual immune dysfunction and often display poorer responses to vaccination. We assessed in a cohort of PLWH (n=110) and HIV negative controls (n=64) the humoral and spike-specific B-cell responses following 1, 2 or 3 SARS-CoV-2 vaccine doses. PLWH had significantly lower neutralizing antibody (nAb) titers than HIV-negative controls at all studied timepoints. Moreover, their neutralization breadth was reduced with fewer individuals developing a neutralizing response against the Omicron variant (BA.1) relative to controls. We also observed a delayed development of neutralization in PLWH that was underpinned by a reduced frequency of spike-specific memory B cells (MBCs) and pronounced B cell dysfunction. Improved neutralization breadth was seen after the third vaccine dose in PLWH but lower nAb responses persisted and were associated with global, but not spike-specific, MBC dysfunction. In contrast to the inferior antibody responses, SARS-CoV-2 vaccination induced robust T cell responses that cross-recognized variants in PLWH. Strikingly, a subset of PLWH with low or absent neutralization had detectable functional T cell responses. These individuals had reduced numbers of circulating T follicular helper cells and an enriched population of CXCR3 + CD127 + CD8 + T cells after two doses of SARS-CoV-2 vaccination, which may compensate for sub-optimal serological responses in the event of infection. Therefore, normalisation of B cell homeostasis could improve serological responses to vaccines in PLWH and evaluating T cell immunity could provide a more comprehensive immune status profile in these individuals and others with B cell imbalances.
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Affiliation(s)
- Emma Touizer
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, UK
| | - Aljawharah Alrubbayi
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, UK
- Nuffield Department of Medicine, University of Oxford, UK
| | - Rosemarie Ford
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, UK
| | - Noshin Hussain
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, UK
| | - Pehuén Pereyra Gerber
- Cambridge Institute of Therapeutic Immunology and Infectious Disease, Department of Medicine, University of Cambridge, UK
| | - Hiu-Long Shum
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, UK
| | - Chloe Rees-Spear
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, UK
| | - Luke Muir
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, UK
| | | | | | - Dylan Jankovic
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, UK
| | - Christopher Pinder
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, UK
| | - Thomas A Fox
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, UK
| | - Ian Williams
- Mortimer Market Centre, Department of HIV, Central and North West London NHS Trust, UK
| | | | - Irfaan Maan
- Mortimer Market Centre, Department of HIV, Central and North West London NHS Trust, UK
- Institute for Global Health, University College London, UK
| | - Laura Waters
- Mortimer Market Centre, Department of HIV, Central and North West London NHS Trust, UK
| | - Margaret Johnson
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, UK
- The Ian Charleson Day Centre, Royal Free Hospital NHS Foundation Trust UK
| | - Sara Madge
- The Ian Charleson Day Centre, Royal Free Hospital NHS Foundation Trust UK
| | - Michael Youle
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, UK
- The Ian Charleson Day Centre, Royal Free Hospital NHS Foundation Trust UK
| | - Tristan Barber
- Institute for Global Health, University College London, UK
- The Ian Charleson Day Centre, Royal Free Hospital NHS Foundation Trust UK
| | - Fiona Burns
- Institute for Global Health, University College London, UK
- The Ian Charleson Day Centre, Royal Free Hospital NHS Foundation Trust UK
| | - Sabine Kinloch
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, UK
- The Ian Charleson Day Centre, Royal Free Hospital NHS Foundation Trust UK
| | | | - Richard Gilson
- Mortimer Market Centre, Department of HIV, Central and North West London NHS Trust, UK
- Institute for Global Health, University College London, UK
| | - Nicholas J Matheson
- Cambridge Institute of Therapeutic Immunology and Infectious Disease, Department of Medicine, University of Cambridge, UK
- NHS Blood and Transplant, Cambridge, UK
| | - Emma Morris
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, UK
| | - Dimitra Peppa
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, UK
- Mortimer Market Centre, Department of HIV, Central and North West London NHS Trust, UK
- Institute for Global Health, University College London, UK
| | - Laura E McCoy
- Institute for Immunity and Transplantation, Division of Infection and Immunity, University College London, UK
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Safety and immunogenicity of an AS03-adjuvanted plant-based SARS-CoV-2 vaccine in Adults with and without Comorbidities. NPJ Vaccines 2022; 7:142. [DOI: 10.1038/s41541-022-00561-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Accepted: 10/17/2022] [Indexed: 11/10/2022] Open
Abstract
AbstractThe rapid spread of SARS-CoV-2 continues to impact humanity on a global scale with rising total morbidity and mortality. Despite the development of several effective vaccines, new products are needed to supply ongoing demand and to fight variants. We report herein a pre-specified interim analysis of the phase 2 portion of a Phase 2/3, randomized, placebo-controlled trial of a coronavirus virus-like particle (CoVLP) vaccine candidate, produced in plants that displays the SARS-CoV-2 spike glycoprotein, adjuvanted with AS03 (NCT04636697). A total of 753 participants were recruited between 25th November 2020 and 24th March 2021 into three groups: Healthy Adults (18–64 years: N = 306), Older Adults (≥65 years: N = 282) and Adults with Comorbidities (≥18 years: N = 165) and randomized 5:1 to receive two intramuscular doses of either vaccine (3.75 µg CoVLP/dose+AS03) or placebo, 21 days apart. This report presents safety, tolerability and immunogenicity data up to 6 months post-vaccination. The immune outcomes presented include neutralizing antibody (NAb) titres as measured by pseudovirion assay at days 21 and 42 as well as neutralizing antibody cross-reactivity to several variants of concern (VOCs): Alpha, Beta, Gamma, Delta, and Omicron (BA.1), up to 201 days post-immunization. Cellular (IFN-γ and IL-4 ELISpot) response data in day 21 and 42 peripheral blood are also presented. In this study, CoVLP+AS03 was well-tolerated and adverse events (AE) after each dose were generally mild to moderate and transient. Solicited AEs in Older Adults and Adults with Comorbidities were generally less frequent than in Healthy Adults and the reactogenicity was higher after the second dose. CoVLP+AS03 induced seroconversion in >35% of participants in each group after the first dose and in ~98% of participants, 21 days after the second dose. In all cohorts, 21-days after the second dose, NAb levels in sera against the vaccine strain were ~10-times those in a panel of convalescent sera. Cross-reactivity to Alpha, Beta and Delta variants was generally retained to day 201 (>80%) while cross-reactivity to the Gamma variant was reduced but still substantial at day 201 (73%). Cross-reactivity to the Omicron variant fell from 72% at day 42 to 20% at day 201. Almost all participants in all groups (>88%) had detectable cellular responses (IFN-γ, IL-4 or both) at 21 days after the second dose. A Th1-biased response was most evident after the first dose and was still present after the second dose. These data demonstrated that CoVLP+AS03 is well-tolerated and highly immunogenic, generating a durable (at least 6 months) immune response against different VOCs, in adults ≥18 years of age, with and without comorbidities.
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Vallejo A, Vizcarra P, Martín-Hondarza A, Gómez-Maldonado S, Haemmerle J, Velasco H, Casado JL. Impact of SARS-CoV-2-specific memory B cells on the immune response after mRNA-based Comirnaty vaccine in seronegative health care workers. Front Microbiol 2022; 13:1002748. [PMID: 36212856 PMCID: PMC9535088 DOI: 10.3389/fmicb.2022.1002748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 09/08/2022] [Indexed: 12/04/2022] Open
Abstract
Purpose To analyze the impact of SARS-COV-2-specific memory B cells (MBC) on the immune response after two doses of mRNA-based Comirnaty COVID-19 vaccine in seronegative health care workers. This study is seeking a rationale for boosting vaccines. Methods Longitudinal study including 31 seronegative health care workers with undetectable specific MBCs (IgG−MBC− group), 24 seronegative with detectable specific MBCs (IgG−MBC+ group), and 24 seropositive with detectable specific MBCs (IgG+MBC+ group). The level of antibodies that inhibit ACE2-RBD interaction, and anti-Spike IgG, IgA, and IgM antibodies was quantified by ELISA. In addition, specific memory B and T cells were quantified by flow cytometry. Results The level of specific MBCs, and isotypes, in the IgG−MBC− group was lower compared to that found in IgG−MBC+ (p = 0.0001) and IgG+MBC+ (p < 0.0001) groups, respectively. ACE2-RBD neutralizing antibodies and anti-S IgG antibodies were at lower levels in the IgG−MBC−group after the vaccine. Specific MBCs directly correlated with specific CD4+ T cells (although not significant, p = 0.065), while no correlation was found with specific CD8+ T cells (p = 0.156) after the vaccine. In parallel, ACE2-RBD neutralizing antibodies only positively correlated with specific CD4+ T cells (p = 0.034). Conclusion IgG−MBC− individuals showed the worst humoral and cellular responses, both in frequency and magnitude, after vaccination. Individuals whose antibodies wane and become undetectable after a given period of time post vaccination and show no specific MBCs are less protected and hence are good candidates for boosting vaccine. On the other hand, seronegative individuals with specific MBC showed faster and higher responses compared to the IgG−MBC− group.
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Affiliation(s)
- Alejandro Vallejo
- Laboratory of Immunovirology, Department of Infectious Diseases, Ramon y Cajal Institute for Health Investigation (IRyCIS), University Hospital Ramón y Cajal, Madrid, Spain
- *Correspondence: Alejandro Vallejo,
| | - Pilar Vizcarra
- Department of Infectious Diseases, Ramon y Cajal Institute for Health Investigation (IRyCIS), University Hospital Ramón y Cajal, Madrid, Spain
| | - Adrián Martín-Hondarza
- Laboratory of Immunovirology, Department of Infectious Diseases, Ramon y Cajal Institute for Health Investigation (IRyCIS), University Hospital Ramón y Cajal, Madrid, Spain
| | - Sandra Gómez-Maldonado
- Department of Infectious Diseases, Ramon y Cajal Institute for Health Investigation (IRyCIS), University Hospital Ramón y Cajal, Madrid, Spain
| | - Johannes Haemmerle
- Department of Prevention of Occupational Risks, University Hospital Ramón y Cajal, Madrid, Spain
| | - Héctor Velasco
- Laboratory of Immunovirology, Department of Infectious Diseases, Ramon y Cajal Institute for Health Investigation (IRyCIS), University Hospital Ramón y Cajal, Madrid, Spain
| | - José L. Casado
- Department of Infectious Diseases, Ramon y Cajal Institute for Health Investigation (IRyCIS), University Hospital Ramón y Cajal, Madrid, Spain
- José L. Casado,
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Al-Attiyah R, Safar HA, Botras L, Botras M, Al-Kandari F, Chehadeh W, Mustafa AS. Immune Cells Profiles In The Peripheral Blood Of Patients With Moderate To Severe COVID-19 And Healthy Subjects With and Without Vaccination With The Pfizer-BioNTech mRNA Vaccine. Front Immunol 2022; 13:851765. [PMID: 35898494 PMCID: PMC9309529 DOI: 10.3389/fimmu.2022.851765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 06/20/2022] [Indexed: 11/17/2022] Open
Abstract
Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), the causative agent of Coronavirus disease 2019 (COVID-19), has caused a global crisis. Patients with COVID-19 present with a range of clinical manifestations, from no symptoms to severe illness. However, little is known about the profiles of immune cells required to protect against SARS-CoV-2. This study was performed to determine the immune cells profiles in the peripheral blood of COVID-19 patients with moderate to severe disease (n=52), and compare the findings with those from healthy subjects vaccinated with Pfizer BioNTech mRNA vaccine (VS) (n=62), and non-vaccinated healthy subjects (HS) (n=30) from Kuwait. Absolute counts and percentages of total lymphocytes and lymphocyte subsets (CD3+ T cells, CD4+ T cells, CD8+ T cells, CD19+ B cells, and CD16+CD56+ NK cells) in the peripheral blood of the three groups were analyzed using flow cytometry. The results showed that the absolute counts of total lymphocytes, CD3+, CD4+, and CD8+ T cells, CD19+ B cells, and CD56+ NK cells, were significantly lower in COVID-19 patients than normal healthy controls and vaccinated subjects. The percentages of CD3+ and CD4+ T lymphocytes were also significantly lower in the COVID-19 patients. However, the percentage of CD16+CD56+ NK cells was significantly higher in the peripheral blood of COVID-19 patients, compared to the HS and VS groups with no detectable differences in the percentages of CD8+ T cells and CD19+ B cells between the three groups. Analysis of the monocyte subsets has showed a significantly higher percentage of CD14+HLA-DR+ monocytes in COVID-19 patients compared to HS whereas the inflammatory CD14+CD16+ HLA-DR+ monocytes, and the non-classical CD16+HLA-DR+ monocytes showed significantly lower frequency in the blood of the patients than that of HS. These findings demonstrate perturbations of both innate and adaptive immune cell subsets that reflect dysregulated host responses in COVID-19 patients with moderate to severe disease.
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Affiliation(s)
- Raja’a Al-Attiyah
- Department of Microbiology, Faculty of Medicine, Health Sciences Center, Kuwait University, Kuwait, Kuwait
- *Correspondence: Raja’a Al-Attiyah,
| | - Hussain A. Safar
- Genomics, Proteomics and Cellomics Sciences Research Unit (OMICSRU), Research Core Facility, Health Sciences Center, Kuwait University, Kuwait, Kuwait
| | - Lotfy Botras
- Mubarak Al-Kabeer Hospital, Ministry of Health, Kuwait, Kuwait
| | - Marina Botras
- Mubarak Al-Kabeer Hospital, Ministry of Health, Kuwait, Kuwait
| | | | - Wassim Chehadeh
- Department of Microbiology, Faculty of Medicine, Health Sciences Center, Kuwait University, Kuwait, Kuwait
| | - Abu Salim Mustafa
- Department of Microbiology, Faculty of Medicine, Health Sciences Center, Kuwait University, Kuwait, Kuwait
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