1
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Ziemssen T, Groth M, Ettle B, Bopp T. Neutralizing antibody titers over 12 months after SARS-CoV-2 mRNA vaccine booster in patients with relapsing multiple sclerosis continuously treated with ofatumumab. Hum Vaccin Immunother 2024; 20:2316422. [PMID: 38346223 PMCID: PMC10863382 DOI: 10.1080/21645515.2024.2316422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 02/06/2024] [Indexed: 02/15/2024] Open
Abstract
Booster vaccinations against SARS-CoV-2 are recommended 6-12 months after the last dose or infection in elderly and high-risk groups. The present analysis aims to evaluate whether an interval shorter than 12 months is required in multiple sclerosis patients receiving ofatumumab. Neutralizing antibody status over 1 year in patients receiving booster vaccination in the non-interventional, multicenter KYRIOS study under continued ofatumumab treatment was analyzed. Fifteen patients were included. At the time of the first booster vaccination, ten patients were seropositive for neutralizing antibodies, four patients were seronegative, and for one patient, no baseline levels were available. All patients who were seropositive at baseline showed >2-fold increase in neutralizing antibody titers after the first booster and two patients (20%) showed a >10-fold increase. Among seronegative patients, three (75%) had a >10-fold increase in neutralizing antibody titers. Seropositivity was maintained in almost all patients until month 12. One initially seronegative patient had less than 2-fold increase in neutralizing antibody titers after the booster vaccination and can be considered a non-responder. Most patients with continued ofatumumab treatment are able to maintain permanent seropositivity and therefore presumably constant protection against severe courses of COVID-19 if repeated booster vaccinations are applied.
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Affiliation(s)
- Tjalf Ziemssen
- Department of Neurology, Center of Clinical Neuroscience, Carl Gustav Carus University Clinic, University Hospital of Dresden, Technische Universität Dresden, Dresden, Germany
| | - Marie Groth
- Medical Franchise Neuroscience, Novartis Pharma GmbH, Nuremberg, Germany
| | - Benjamin Ettle
- Medical Franchise Neuroscience, Novartis Pharma GmbH, Nuremberg, Germany
| | - Tobias Bopp
- Institute for Immunology, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
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2
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Abril AG, Alejandre J, Mariscal A, Alserawan L, Rabella N, Roman E, Lopez-Contreras J, Navarro F, Serrano E, Nomdedeu JM, Vidal S. Titers of IgG and IgA against SARS-CoV-2 proteins and their association with symptoms in mild COVID-19 infection. Sci Rep 2024; 14:12725. [PMID: 38830902 PMCID: PMC11148197 DOI: 10.1038/s41598-024-59634-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 04/12/2024] [Indexed: 06/05/2024] Open
Abstract
Humoral immunity in COVID-19 includes antibodies (Abs) targeting spike (S) and nucleocapsid (N) SARS-CoV-2 proteins. Antibody levels are known to correlate with disease severity, but titers are poorly reported in mild or asymptomatic cases. Here, we analyzed the titers of IgA and IgG against SARS-CoV-2 proteins in samples from 200 unvaccinated Hospital Workers (HWs) with mild COVID-19 at two time points after infection. We analyzed the relationship between Ab titers and patient characteristics, clinical features, and evolution over time. Significant differences in IgG and IgA titers against N, S1 and S2 proteins were found when samples were segregated according to time T1 after infection, seroprevalence at T1, sex and age of HWs and symptoms at infection. We found that IgM + samples had higher titers of IgG against N antigen and IgA against S1 and S2 antigens than IgM - samples. There were significant correlations between anti-S1 and S2 Abs. Interestingly, IgM + patients with dyspnea had lower titers of IgG and IgA against N, S1 and S2 than those without dyspnea. Comparing T1 and T2, we found that IgA against N, S1 and S2 but only IgG against certain Ag decreased significantly. In conclusion, an association was established between Ab titers and the development of infection symptoms.
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Affiliation(s)
- Andrés G Abril
- Departament Biologia Cel·lular, Facultat de Medicina, Fisiologia i Immunologia, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193, Bellaterra, Spain
- Althaia Xarxa Assistencial Universitària de Manresa, 08243, Manresa, Spain
- Institut de Recerca i Innovació en Ciències de la Vida i de la Salut a la Catalunya Central (IRIS-CC), 08500, Vic, Spain
| | - Jose Alejandre
- Grup de Malalties Inflamatòries, IIB-Sant Pau, Institut Recerca Hospital de la Santa Creu i Sant Pau, 08041, Barcelona, Spain
| | - Anais Mariscal
- Servei d'Immunologia, Hospital de la Santa Creu i Sant Pau, 08041, Barcelona, Spain
| | - Leticia Alserawan
- Servei d'Immunologia, Hospital de la Santa Creu i Sant Pau, 08041, Barcelona, Spain
| | - Nuria Rabella
- Servei de Microbiologia, Hospital de la Santa Creu i Sant Pau, 08041, Barcelona, Spain
| | - Eva Roman
- Servei de Patologia Digestiva, Hospital de la Santa Creu i Sant Pau, 08041, Barcelona, Spain
| | - Joaquin Lopez-Contreras
- Servei de Malalties Infeccioses, Hospital de la Santa Creu i Sant Pau, 08041, Barcelona, Spain
| | - Ferran Navarro
- Servei de Microbiologia, Hospital de la Santa Creu i Sant Pau, 08041, Barcelona, Spain
| | | | - Josep M Nomdedeu
- Servei d'Hematologia, Hospital de la Santa Creu i Sant Pau, 08041, Barcelona, Spain
| | - Silvia Vidal
- Departament Biologia Cel·lular, Facultat de Medicina, Fisiologia i Immunologia, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193, Bellaterra, Spain.
- Grup de Malalties Inflamatòries, IIB-Sant Pau, Institut Recerca Hospital de la Santa Creu i Sant Pau, 08041, Barcelona, Spain.
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3
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Rak A, Matyushenko V, Prokopenko P, Kostromitina A, Polyakov D, Sokolov A, Rudenko L, Isakova-Sivak I. A novel immunofluorescent test system for SARS-CoV-2 detection in infected cells. PLoS One 2024; 19:e0304534. [PMID: 38820303 PMCID: PMC11142482 DOI: 10.1371/journal.pone.0304534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Accepted: 05/14/2024] [Indexed: 06/02/2024] Open
Abstract
Highly variable pandemic coronavirus SARS-CoV-2, which causes the hazardous COVID-19 infection, has been persistent in the human population since late 2019. A prompt assessment of individual and herd immunity against the infection can be accomplished by using rapid tests to determine antiviral antibody levels. The microneutralization assay (MN) is one of the most widely used diagnostic methods that has been proposed to assess the qualitative and quantitative characteristics of virus-specific humoral immunity in COVID-19 convalescents or vaccine recipients. However, some aspects of the assay, such as sensitivity and time cost, need improvement. Here, we developed an express test, which may be potentially used in clinical practice for the assessment of serum-caused SARS-CoV-2 inhibition in infected cell cultures. It implies the detection and counting of coronaviral fluorescent-forming units (FFU) and includes two sequentially used developing components: biotinylated mouse monoclonal antibodies against the recombinant N protein of SARS-CoV-2 (B.1) and the recombinant EGFP-streptavidin fusion protein. Due to the universal specificity of the antibodies, our analytical tool is suitable for the detection of various strains of SARS-CoV-2 when determining both the infectious titer of viruses and the titer of serum virus-neutralizing antibodies. The developed two-component test system is characterized by high sensitivity, a reduced number of analytic stages and low assay cost, as well as by flexibility, since it may be modified for detection of other pathogens using the appropriate antibodies.
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Affiliation(s)
- Alexandra Rak
- Department of Virology, Institute of Experimental Medicine, St. Petersburg, Russian Federation
| | - Victoria Matyushenko
- Department of Virology, Institute of Experimental Medicine, St. Petersburg, Russian Federation
| | - Polina Prokopenko
- Department of Virology, Institute of Experimental Medicine, St. Petersburg, Russian Federation
| | - Arina Kostromitina
- Department of Virology, Institute of Experimental Medicine, St. Petersburg, Russian Federation
| | - Dmitry Polyakov
- Department of Molecular Genetics, Institute of Experimental Medicine, St. Petersburg, Russian Federation
| | - Alexey Sokolov
- Department of Molecular Genetics, Institute of Experimental Medicine, St. Petersburg, Russian Federation
| | - Larisa Rudenko
- Department of Virology, Institute of Experimental Medicine, St. Petersburg, Russian Federation
| | - Irina Isakova-Sivak
- Department of Virology, Institute of Experimental Medicine, St. Petersburg, Russian Federation
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4
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Ávila-Nieto C, Vergara-Alert J, Amengual-Rigo P, Ainsua-Enrich E, Brustolin M, Rodríguez de la Concepción ML, Pedreño-Lopez N, Rodon J, Urrea V, Pradenas E, Marfil S, Ballana E, Riveira-Muñoz E, Pérez M, Roca N, Tarrés-Freixas F, Cantero G, Pons-Grífols A, Rovirosa C, Aguilar-Gurrieri C, Ortiz R, Barajas A, Trinité B, Lepore R, Muñoz-Basagoiti J, Perez-Zsolt D, Izquierdo-Useros N, Valencia A, Blanco J, Guallar V, Clotet B, Segalés J, Carrillo J. Immunization with V987H-stabilized Spike glycoprotein protects K18-hACE2 mice and golden Syrian hamsters upon SARS-CoV-2 infection. Nat Commun 2024; 15:2349. [PMID: 38514609 PMCID: PMC10957958 DOI: 10.1038/s41467-024-46714-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 02/27/2024] [Indexed: 03/23/2024] Open
Abstract
Safe and effective severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccines are crucial to fight against the coronavirus disease 2019 pandemic. Most vaccines are based on a mutated version of the Spike glycoprotein [K986P/V987P (S-2P)] with improved stability, yield and immunogenicity. However, S-2P is still produced at low levels. Here, we describe the V987H mutation that increases by two-fold the production of the recombinant Spike and the exposure of the receptor binding domain (RBD). S-V987H immunogenicity is similar to S-2P in mice and golden Syrian hamsters (GSH), and superior to a monomeric RBD. S-V987H immunization confer full protection against severe disease in K18-hACE2 mice and GSH upon SARS-CoV-2 challenge (D614G or B.1.351 variants). Furthermore, S-V987H immunized K18-hACE2 mice show a faster tissue viral clearance than RBD- or S-2P-vaccinated animals challenged with D614G, B.1.351 or Omicron BQ1.1 variants. Thus, S-V987H protein might be considered for future SARS-CoV-2 vaccines development.
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Affiliation(s)
| | - Júlia Vergara-Alert
- Unitat Mixta d'Investigació IRTA-UAB en Sanitat Animal, Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Barcelona, Catalonia, Spain
- IRTA Programa de Sanitat Animal, Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Barcelona, Catalonia, Spain
| | - Pep Amengual-Rigo
- Life Sciences Department, Barcelona Supercomputing Center (BSC), Barcelona, Spain
| | | | - Marco Brustolin
- Unitat Mixta d'Investigació IRTA-UAB en Sanitat Animal, Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Barcelona, Catalonia, Spain
- IRTA Programa de Sanitat Animal, Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Barcelona, Catalonia, Spain
- Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
| | | | | | - Jordi Rodon
- Unitat Mixta d'Investigació IRTA-UAB en Sanitat Animal, Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Barcelona, Catalonia, Spain
- IRTA Programa de Sanitat Animal, Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Barcelona, Catalonia, Spain
| | - Victor Urrea
- IrsiCaixa AIDS Research Institute, Campus Can Ruti, Badalona, Spain
| | - Edwards Pradenas
- IrsiCaixa AIDS Research Institute, Campus Can Ruti, Badalona, Spain
| | - Silvia Marfil
- IrsiCaixa AIDS Research Institute, Campus Can Ruti, Badalona, Spain
| | - Ester Ballana
- IrsiCaixa AIDS Research Institute, Campus Can Ruti, Badalona, Spain
- Germans Trias i Pujol Research Institute (IGTP), Campus Can Ruit, Badalona, Spain
- CIBERINFEC. ISCIII, Madrid, Spain
| | | | - Mònica Pérez
- Unitat Mixta d'Investigació IRTA-UAB en Sanitat Animal, Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Barcelona, Catalonia, Spain
- IRTA Programa de Sanitat Animal, Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Barcelona, Catalonia, Spain
| | - Núria Roca
- Unitat Mixta d'Investigació IRTA-UAB en Sanitat Animal, Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Barcelona, Catalonia, Spain
- IRTA Programa de Sanitat Animal, Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Barcelona, Catalonia, Spain
| | - Ferran Tarrés-Freixas
- IrsiCaixa AIDS Research Institute, Campus Can Ruti, Badalona, Spain
- Unitat Mixta d'Investigació IRTA-UAB en Sanitat Animal, Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Barcelona, Catalonia, Spain
- IRTA Programa de Sanitat Animal, Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Barcelona, Catalonia, Spain
| | - Guillermo Cantero
- Unitat Mixta d'Investigació IRTA-UAB en Sanitat Animal, Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Barcelona, Catalonia, Spain
| | | | - Carla Rovirosa
- IrsiCaixa AIDS Research Institute, Campus Can Ruti, Badalona, Spain
| | | | - Raquel Ortiz
- IrsiCaixa AIDS Research Institute, Campus Can Ruti, Badalona, Spain
| | - Ana Barajas
- IrsiCaixa AIDS Research Institute, Campus Can Ruti, Badalona, Spain
| | - Benjamin Trinité
- IrsiCaixa AIDS Research Institute, Campus Can Ruti, Badalona, Spain
| | - Rosalba Lepore
- Life Sciences Department, Barcelona Supercomputing Center (BSC), Barcelona, Spain
| | | | | | - Nuria Izquierdo-Useros
- IrsiCaixa AIDS Research Institute, Campus Can Ruti, Badalona, Spain
- Germans Trias i Pujol Research Institute (IGTP), Campus Can Ruit, Badalona, Spain
- CIBERINFEC. ISCIII, Madrid, Spain
| | - Alfonso Valencia
- Life Sciences Department, Barcelona Supercomputing Center (BSC), Barcelona, Spain
- Centre for Health and Social Care Research (CESS), Faculty of Medicine. University of Vic-Central University of Catalonia (UVic-UCC), Vic, Catalonia, Spain
| | - Julià Blanco
- IrsiCaixa AIDS Research Institute, Campus Can Ruti, Badalona, Spain
- Germans Trias i Pujol Research Institute (IGTP), Campus Can Ruit, Badalona, Spain
- CIBERINFEC. ISCIII, Madrid, Spain
- Centre for Health and Social Care Research (CESS), Faculty of Medicine. University of Vic-Central University of Catalonia (UVic-UCC), Vic, Catalonia, Spain
| | - Victor Guallar
- Life Sciences Department, Barcelona Supercomputing Center (BSC), Barcelona, Spain
- Catalan Institution for Research and Advanced Studies, Barcelona, Spain
| | - Bonaventura Clotet
- IrsiCaixa AIDS Research Institute, Campus Can Ruti, Badalona, Spain
- Germans Trias i Pujol Research Institute (IGTP), Campus Can Ruit, Badalona, Spain
- CIBERINFEC. ISCIII, Madrid, Spain
- Centre for Health and Social Care Research (CESS), Faculty of Medicine. University of Vic-Central University of Catalonia (UVic-UCC), Vic, Catalonia, Spain
- Fundaciò Lluita contra les infeccions. Hospital Germans Trias i Pujol, Badalona, Catalonia, Spain
- Universitat Autonoma de Barcelona. Bellaterra, Cerdanyola del Vallès, Catalonia, Spain
| | - Joaquim Segalés
- Unitat Mixta d'Investigació IRTA-UAB en Sanitat Animal, Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Barcelona, Catalonia, Spain.
- Universitat Autonoma de Barcelona. Bellaterra, Cerdanyola del Vallès, Catalonia, Spain.
- Departament de Sanitat i Anatomia Animals, Facultat de Veterinària, UAB, Bellaterra, Cerdanyola del Vallès, Spain.
| | - Jorge Carrillo
- IrsiCaixa AIDS Research Institute, Campus Can Ruti, Badalona, Spain.
- Germans Trias i Pujol Research Institute (IGTP), Campus Can Ruit, Badalona, Spain.
- CIBERINFEC. ISCIII, Madrid, Spain.
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5
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van Schaik EJ, Fratzke AP, Gregory AE, Dumaine JE, Samuel JE. Vaccine development: obligate intracellular bacteria new tools, old pathogens: the current state of vaccines against obligate intracellular bacteria. Front Cell Infect Microbiol 2024; 14:1282183. [PMID: 38567021 PMCID: PMC10985213 DOI: 10.3389/fcimb.2024.1282183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 03/01/2024] [Indexed: 04/04/2024] Open
Abstract
Obligate intracellular bacteria have remained those for which effective vaccines are unavailable, mostly because protection does not solely rely on an antibody response. Effective antibody-based vaccines, however, have been developed against extracellular bacteria pathogens or toxins. Additionally, obligate intracellular bacteria have evolved many mechanisms to subvert the immune response, making vaccine development complex. Much of what we know about protective immunity for these pathogens has been determined using infection-resolved cases and animal models that mimic disease. These studies have laid the groundwork for antigen discovery, which, combined with recent advances in vaccinology, should allow for the development of safe and efficacious vaccines. Successful vaccines against obligate intracellular bacteria should elicit potent T cell memory responses, in addition to humoral responses. Furthermore, they ought to be designed to specifically induce strong cytotoxic CD8+ T cell responses for protective immunity. This review will describe what we know about the potentially protective immune responses to this group of bacteria. Additionally, we will argue that the novel delivery platforms used during the Sars-CoV-2 pandemic should be excellent candidates to produce protective immunity once antigens are discovered. We will then look more specifically into the vaccine development for Rickettsiaceae, Coxiella burnetti, and Anaplasmataceae from infancy until today. We have not included Chlamydia trachomatis in this review because of the many vaccine related reviews that have been written in recent years.
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Affiliation(s)
- E J van Schaik
- Department of Microbial Pathogenesis and Immunology, School of Medicine, Texas A&M University, Medical Research and Education Building, Bryan, TX, United States
| | - A P Fratzke
- Department of Microbial Pathogenesis and Immunology, School of Medicine, Texas A&M University, Medical Research and Education Building, Bryan, TX, United States
- Charles River Laboratories, Reno, NV, United States
| | - A E Gregory
- Department of Microbial Pathogenesis and Immunology, School of Medicine, Texas A&M University, Medical Research and Education Building, Bryan, TX, United States
- Department of Physiology and Biophysics, University of California, Irvine, Irvine, CA, United States
| | - Jennifer E Dumaine
- Department of Microbial Pathogenesis and Immunology, School of Medicine, Texas A&M University, Medical Research and Education Building, Bryan, TX, United States
| | - J E Samuel
- Department of Microbial Pathogenesis and Immunology, School of Medicine, Texas A&M University, Medical Research and Education Building, Bryan, TX, United States
- Department of Veterinary Pathobiology, School of Veterinary Medicine, Texas A&M University (TAMU), College Station, TX, United States
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6
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Malani A, Aiyar J, Sant A, Kamran N, Mohanan M, Taneja S, Woda B, Zhao W, Acharya A. Comparing population-level humoral and cellular immunity to SARS-Cov-2 in Bangalore, India. Sci Rep 2024; 14:5758. [PMID: 38459035 PMCID: PMC10923858 DOI: 10.1038/s41598-024-54922-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 02/18/2024] [Indexed: 03/10/2024] Open
Abstract
Two types of immunity, humoral and cellular, offer protection against COVID. Humoral protection, contributed by circulating neutralizing antibodies, can provide immediate protection but decays more quickly than cellular immunity and can lose effectiveness in the face of mutation and drift in the SARS-CoV-2 spike protein. Therefore, population-level seroprevalence surveys used to estimate population-level immunity may underestimate the degree to which a population is protected against COVID. In early 2021, before India began its vaccination campaign, we tested for humoral and cellular immunity to SARS-Cov-2 in representative samples of slum and non-slum populations in Bangalore, India. We found that 29.7% of samples (unweighted) had IgG antibodies to the spike protein and 15.5% had neutralizing antibodies, but at up to 46% showed evidence of cellular immunity. We also find that prevalence of cellular immunity is significantly higher in slums than in non-slums. These findings suggest (1) that a significantly larger proportion of the population in Bangalore, India, had cellular immunity to SARS-CoV-2 than had humoral immunity, as measured by serological surveys, and (2) that low socio-economic status communities display higher frequency of cellular immunity, likely because of greater exposure to infection due to population density.
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Affiliation(s)
| | | | - Andrea Sant
- Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY, USA
| | | | - Manoj Mohanan
- Sanford School of Public Policy, Duke University, Durham, NC, USA
| | - Saloni Taneja
- University of Southern California, Los Angeles, CA, USA
| | - Bartek Woda
- University of Chicago, Chicago, IL, USA
- Amazon, Chicago, IL, USA
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7
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von Possel R, Menge B, Deschermeier C, Fritzsche C, Hemmer C, Geerdes-Fenge H, Loebermann M, Schulz A, Lattwein E, Steinhagen K, Tönnies R, Ahrendt R, Emmerich P. Performance Analysis of Serodiagnostic Tests to Characterize the Incline and Decline of the Individual Humoral Immune Response in COVID-19 Patients: Impact on Diagnostic Management. Viruses 2024; 16:91. [PMID: 38257792 PMCID: PMC10820597 DOI: 10.3390/v16010091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 12/20/2023] [Accepted: 12/21/2023] [Indexed: 01/24/2024] Open
Abstract
Serodiagnostic tests for antibody detection to estimate the immunoprotective status regarding SARS-CoV-2 support diagnostic management. This study aimed to investigate the performance of serological assays for COVID-19 and elaborate on test-specific characteristics. Sequential samples (n = 636) of four panels (acute COVID-19, convalescent COVID-19 (partly vaccinated post-infection), pre-pandemic, and cross-reactive) were tested for IgG by indirect immunofluorescence test (IIFT) and EUROIMMUN EUROLINE Anti-SARS-CoV-2 Profile (IgG). Neutralizing antibodies were determined by a virus neutralization test (VNT) and two surrogate neutralization tests (sVNT, GenScript cPass, and EUROIMMUN SARS-CoV-2 NeutraLISA). Analysis of the acute and convalescent panels revealed high positive (78.3% and 91.6%) and negative (91.6%) agreement between IIFT and Profile IgG. The sVNTs revealed differences in their positive (cPass: 89.4% and 97.0%, NeutraLISA: 71.5% and 72.1%) and negative agreement with VNT (cPass: 92.3% and 50.0%, NeutraLISA: 95.1% and 92.5%) at a diagnostic specificity of 100% for all tests. The cPass showed higher inhibition rates than NeutraLISA at VNT titers below 1:640. Cross-reactivities were only found by cPass (57.1%). Serodiagnostic tests, which showed substantial agreement and fast runtime, could provide alternatives for cell-based assays. The findings of this study suggest that careful interpretation of serodiagnostic results obtained at different times after SARS-CoV-2 antigen exposure is crucial to support decision-making in diagnostic management.
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Affiliation(s)
- Ronald von Possel
- Department for Virology, Bernhard Nocht Institute for Tropical Medicine, 20359 Hamburg, Germany
- Department of Tropical Medicine and Infectious Diseases, Center of Internal Medicine II, University of Rostock, 18057 Rostock, Germany
| | - Babett Menge
- Institute for Experimental Immunology, EUROIMMUN Medizinische Labordiagnostika AG, 23560 Lübeck, Germany
| | - Christina Deschermeier
- Diagnostics Development Laboratory, Bernhard Nocht Institute for Tropical Medicine, 20359 Hamburg, Germany
| | - Carlos Fritzsche
- Department of Tropical Medicine and Infectious Diseases, Center of Internal Medicine II, University of Rostock, 18057 Rostock, Germany
| | - Christoph Hemmer
- Department of Tropical Medicine and Infectious Diseases, Center of Internal Medicine II, University of Rostock, 18057 Rostock, Germany
| | - Hilte Geerdes-Fenge
- Department of Tropical Medicine and Infectious Diseases, Center of Internal Medicine II, University of Rostock, 18057 Rostock, Germany
| | - Micha Loebermann
- Department of Tropical Medicine and Infectious Diseases, Center of Internal Medicine II, University of Rostock, 18057 Rostock, Germany
| | - Anette Schulz
- Institute for Experimental Immunology, EUROIMMUN Medizinische Labordiagnostika AG, 23560 Lübeck, Germany
| | - Erik Lattwein
- Institute for Experimental Immunology, EUROIMMUN Medizinische Labordiagnostika AG, 23560 Lübeck, Germany
| | - Katja Steinhagen
- Institute for Experimental Immunology, EUROIMMUN Medizinische Labordiagnostika AG, 23560 Lübeck, Germany
| | | | | | - Petra Emmerich
- Department for Virology, Bernhard Nocht Institute for Tropical Medicine, 20359 Hamburg, Germany
- Department of Tropical Medicine and Infectious Diseases, Center of Internal Medicine II, University of Rostock, 18057 Rostock, Germany
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8
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Lovell JF, Miura K, Baik YO, Lee C, Lee JY, Park YS, Hong I, Lee JH, Kim T, Seo SH, Kim JO, Song M, Kim CJ, Choi JK, Kim J, Choo EJ, Choi JH. One-year antibody durability induced by EuCorVac-19, a liposome-displayed COVID-19 receptor binding domain subunit vaccine, in healthy Korean subjects. Int J Infect Dis 2024; 138:73-80. [PMID: 37944586 DOI: 10.1016/j.ijid.2023.11.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 10/26/2023] [Accepted: 11/02/2023] [Indexed: 11/12/2023] Open
Abstract
OBJECTIVE EuCorVac-19 (ECV-19), an adjuvanted liposome-displayed receptor binding domain (RBD) COVID-19 vaccine, previously reported interim Phase 2 trial results showing induction of neutralizing antibodies 3 weeks after prime-boost immunization. The objective of this study was to determine the longer-term antibody response of the vaccine. METHODS To assess immunogenicity 6 and 12 months after vaccination, participants in the Phase 2 trial (NCT04783311) were excluded if they: 1) withdrew, 2) reported COVID-19 infection or additional vaccination, or 3) exhibited increasing Spike (S) antibodies (representing possible non-reported infection). Following exclusions, of the 197 initial subjects, anti-S IgG antibodies and neutralizing antibodies were further assessed in 124 subjects at the 6-month timepoint, and 36 subjects at the 12-month timepoint. RESULTS Median anti-S antibody half-life was 52 days (interquartile range [IQR]:42-70), in the "early" period from 3 weeks to 6 months, and 130 days (IQR:97-169) in the "late" period from 6 to 12 months. There was a negative correlation between initial antibody titer and half-life. Anti-S and neutralizing antibody responses were correlated. Neutralizing antibody responses showed longer half-lives; the early period had a median half-life of 120 days (IQR:81-207), and the late period had a median half-life of 214 days (IQR:140-550). CONCLUSION These data establish antibody durability of ECV-19, using a framework to analyze COVID-19 vaccine-induced antibodies during periods of high infection.
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Affiliation(s)
- Jonathan F Lovell
- Department of Biomedical Engineering, University at Buffalo, Buffalo, New York, USA.
| | - Kazutoyo Miura
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland, USA
| | - Yeong Ok Baik
- Eubiologics, R&D Center, EuBiologics Co., Ltd., Chuncheon, Korea
| | - Chankyu Lee
- Eubiologics, R&D Center, EuBiologics Co., Ltd., Chuncheon, Korea
| | - Jeong-Yoon Lee
- Eubiologics, R&D Center, EuBiologics Co., Ltd., Chuncheon, Korea
| | | | - Ingi Hong
- International Vaccine Institute, Gwanak-gu, Seoul, Korea
| | - Jung Hyuk Lee
- International Vaccine Institute, Gwanak-gu, Seoul, Korea
| | - Taewoo Kim
- International Vaccine Institute, Gwanak-gu, Seoul, Korea
| | - Sang Hwan Seo
- International Vaccine Institute, Gwanak-gu, Seoul, Korea
| | - Jae-Ouk Kim
- International Vaccine Institute, Gwanak-gu, Seoul, Korea
| | - Manki Song
- International Vaccine Institute, Gwanak-gu, Seoul, Korea
| | - Chung-Jong Kim
- Department of Internal Medicine, Ewha Womans University, Seoul, Korea
| | - Jae-Ki Choi
- Department of Infectious Diseases, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jieun Kim
- Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea
| | - Eun Ju Choo
- Department of Infectious Diseases, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
| | - Jung-Hyun Choi
- Department of Infectious Diseases, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
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Pecoraro V, Pirotti T, Trenti T. Evidence of SARS-CoV-2 reinfection: analysis of 35,000 subjects and overview of systematic reviews. Clin Exp Med 2023; 23:1213-1224. [PMID: 36289100 PMCID: PMC9607758 DOI: 10.1007/s10238-022-00922-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 10/11/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND Reinfection by SARS-CoV-2 is a rare but possible event. We evaluated the prevalence of reinfections in the Province of Modena and performed an overview of systematic reviews to summarize the current knowledge. METHODS We applied big data analysis and retrospectively analysed the results of oro- or naso-pharyngeal swab results tested for molecular research of viral RNA of SARS-CoV-2 between 1 January 2021 and 30 June 2021 at a single center. We selected individuals with samples sequence of positive, negative and then positive results. Between first and second positive result we considered a time interval of 90 days to be sure of a reinfection. We also performed a search for and evaluation of systematic reviews reporting SARS-CoV-2 reinfection rates. Main information was collected and the methodological quality of each review was assessed, according to A Measurement Tool to Assess systematic Reviews (AMSTAR). RESULTS Initial positive results were revealed in more than 35,000 (20%) subjects; most (28%) were aged 30-49 years old. Reinfection was reported in 1,258 (3.5%); most (33%) were aged 30-49 years old. Reinfection rates according to vaccinated or non-vaccinated subjects were 0.6% vs 1.1% (p < 0.0001). Nine systematic reviews were identified and confirmed that SARS-CoV-2 reinfection rate is a rare event. AMSTAR revealed very low-moderate levels of quality among selected systematic reviews. CONCLUSIONS There is a real, albeit rare risk of SARS-CoV-2 reinfection. Big data analysis enabled accurate estimates of the reinfection rates. Nevertheless, a standardized approach to identify and report reinfection cases should be developed.
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Affiliation(s)
- Valentina Pecoraro
- Department of Laboratory Medicine and Pathology, Azienda USL of Modena, Modena, Italy
| | - Tommaso Pirotti
- Department of Laboratory Medicine and Pathology, Azienda USL of Modena, Modena, Italy
| | - Tommaso Trenti
- Department of Laboratory Medicine and Pathology, Azienda USL of Modena, Modena, Italy
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10
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Cosan F, Demirel OU, Yalcin D, Sonkaya MM, Uluisik IE, Cecen O, Furuncuoglu Y, Celikmen DM, Kara O, Ceylan E, Avsar T. Comparison of anti-spike IgG, anti-spike IgA levels and neutralizing antibody activity induced by CoronaVac and BNT162b2 vaccines in patients with inflammatory rheumatic diseases receiving immunosuppressive therapy. BMC Rheumatol 2023; 7:20. [PMID: 37468956 DOI: 10.1186/s41927-023-00342-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 06/20/2023] [Indexed: 07/21/2023] Open
Abstract
BACKGROUND The importance of COVID-19 vaccination for patients on immunosuppressive (IS) medication has increased due to the high risk of severe disease or mortality. Different vaccines have varying efficacy rates against symptomatic COVID-19, ranging from 46.8% to 95%. The objective of this study was to examine the differences in anti-Spike IgG, anti-Spike IgA, and neutralizing antibody (NAb) activity between the inactive CoronaVac vaccine and the mRNA-based BNT162b2 vaccine in IS patients. METHOD A total of 441 volunteers, including 104 IS patients, 263 healthy controls (HC), who received two doses of CoronaVac or BNT162b2, and 74 unvaccinated patients with a history of SARS-CoV-2 infection, were included in the study. Anti-spike IgG, IgA, and NAb activity were investigated. RESULTS Immunogenicity with BNT162b2 was higher than with CoronaVac, but in IS groups, it was lower than HC (CoronaVac-IS: 79.3%, CoronaVac-HC: 96.5%, p < 0.001; BNT162b2-IS: 91.3%, BNT162b2-HC: 100%, p = 0.005). With CoronaVac, anti-Spike IgG levels were significantly lower than BNT162b2 (CoronaVac-IS: 234.5AU/mL, CoronaVac-HC: 457.85AU/mL; BNT162b2-IS: 5311.2AU/mL, BNT162b2-HC: 8842.8AU/mL). NAb activity in the BNT162b2 group was significantly higher. NAb and anti-Spike IgG levels were found to be correlated. Among the IS group, a significantly lower response to the vaccines was observed when using rituximab. IgA levels were found to be lower with CoronaVac. CONCLUSIONS Although immunogenicity was lower in IS patients, an acceptable response was obtained with both vaccines, and significantly higher anti-Spike IgG, anti-Spike IgA, and NAb activity levels were obtained with BNT162b2.
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Affiliation(s)
- Fulya Cosan
- Faculty of Medicine, Department of Internal Medicine, Division of Rheumatology, Bahcesehir University, Istanbul, Turkey.
| | - Ozlem Unay Demirel
- Faculty of Medicine, Department of Medical Biochemistry, Bahcesehir University, Istanbul, Turkey
| | - Demet Yalcin
- Faculty of Medicine, Department of Medical Microbiology, and Infectious Diseases, Istinye University, Istanbul, Turkey
| | - Muhammed Mert Sonkaya
- Faculty of Medicine, Department of Internal Medicine, Bahcesehir University, Istanbul, Turkey
| | - Isilsu Ezgi Uluisik
- Faculty of Medicine, Department of Internal Medicine, Bahcesehir University, Istanbul, Turkey
| | - Olida Cecen
- Faculty of Medicine, Department of Internal Medicine, Bahcesehir University, Istanbul, Turkey
| | - Yavuz Furuncuoglu
- Faculty of Medicine, Department of Internal Medicine, Bahcesehir University, Istanbul, Turkey
| | - Deniz Maktav Celikmen
- Faculty of Medicine, Department of Internal Medicine, Bahcesehir University, Istanbul, Turkey
| | - Osman Kara
- Medical Park Goztepe Hospital, Department of Hematology, Bahcesehir University, Istanbul, Turkey
| | - Erkan Ceylan
- Medical Park Goztepe Hospital, Department of Chest Diseases, Bahcesehir University, Istanbul, Turkey
| | - Timucin Avsar
- Faculty of Medicine, Department of Medical Biology, Bahcesehir University, Istanbul, Turkey
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11
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Ni Z, Yun T, Chen L, Ye W, Hua J, Zhu Y, Liu G, Zhang C. Study on the Protective Immunity Induced by Pseudotyped Baculovirus Expressing the E Protein of Tembusu Virus in Ducklings. Genes (Basel) 2023; 14:1316. [PMID: 37510221 PMCID: PMC10378915 DOI: 10.3390/genes14071316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 06/15/2023] [Accepted: 06/21/2023] [Indexed: 07/30/2023] Open
Abstract
The Duck Tembusu virus (DTMUV), a pathogenic flavivirus, has been causing significant economic losses in the Chinese poultry industry since 2010. This virus can severely decrease egg production and inhibit the growth of laying ducks and ducklings. While many vaccines have been developed to prevent DTMUV infection, fresh outbreaks continue to occur, as few effective vaccines are available. The E glycoprotein of DTMUV is the primary target for inducing protective immunity in the natural host. Therefore, we conducted an investigation and successfully developed a recombinant baculovirus containing the DTMUV E gene. Ducklings were then vaccinated with the purified protein derived from this virus as a potential vaccine candidate. Our findings demonstrated that the E glycoprotein of DTMUV was highly expressed in Sf9 cells. The vaccination of ducklings with the recombinant baculovirus Bac-E resulted in the induction of strong humoral and cellular immune responses. Most significantly, we observed that the vaccine provided 100% protective immunity against lethal challenges with the DTMUV YY5 strain.
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Affiliation(s)
- Zheng Ni
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Tao Yun
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Liu Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Weicheng Ye
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Jionggang Hua
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Yinchu Zhu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Guangqing Liu
- Shanghai Veterinary Research Institute, Chinese Academy at Agricultural Sciences, Shanghai 200241, China
| | - Cun Zhang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
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12
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Goshina A, Matyushenko V, Mezhenskaya D, Rak A, Katelnikova A, Gusev D, Rudenko L, Isakova-Sivak I. RDE Treatment Prevents Non-Specific Detection of SARS-CoV-2- and Influenza-Specific IgG Antibodies in Heat-Inactivated Serum Samples. Antibodies (Basel) 2023; 12:39. [PMID: 37366655 DOI: 10.3390/antib12020039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 05/28/2023] [Accepted: 06/12/2023] [Indexed: 06/28/2023] Open
Abstract
Assessing the levels of serum IgG antibodies is widely used to measure immunity to influenza and the new severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) after natural infection or vaccination with specific vaccines, as well as to study immune responses to these viruses in animal models. For safety reasons, sometimes serum specimens collected from infected individuals are subjected to heat inactivation at 56 °C to reduce the risk of infecting personnel during serological studies. However, this procedure may affect the level of virus-specific antibodies, making the results of antibody immunoassays uninterpretable. Here, we evaluated the effect of the heat inactivation of human, ferret and hamster serum samples on the binding of IgG antibodies to the influenza and SARS-CoV-2 antigens. For this, serum samples of naive and immune hosts were analyzed in three variants: (i) untreated sera, (ii) heated at 56 °C for 1 h, and (iii) treated with receptor-destroying enzyme (RDE). The samples were studied through an in-house enzyme-linked immunosorbent assay (ELISA) using whole influenza virus or recombinant proteins corresponding to nucleocapsid (N) protein and the receptor-binding domain of SARS-CoV-2 Spike (RBD) as antigens. We demonstrated that the heat inactivation of the naive serum samples of various hosts can lead to false-positive results, while RDE treatment abolished the effect of the non-specific binding of IgG antibodies to the viral antigens. Furthermore, RDE also significantly decreased the level of virus-specific IgG antibodies in SARS-CoV-2 and influenza-immune sera of humans and animals, although it is unknown whether it actually removes true virus-specific IgG antibodies or only non-specifically binding artifacts. Nevertheless, we suggest that the RDE treatment of human and animal sera may be useful in preventing false-positive results in various immunoassays, while also neutralizing infectious virus, since the standard protocol for the use of RDE also includes heating the sample at 56 °C.
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Affiliation(s)
- Arina Goshina
- Department of Virology, Institute of Experimental Medicine, 197376 Saint Petersburg, Russia
| | - Victoria Matyushenko
- Department of Virology, Institute of Experimental Medicine, 197376 Saint Petersburg, Russia
| | - Daria Mezhenskaya
- Department of Virology, Institute of Experimental Medicine, 197376 Saint Petersburg, Russia
| | - Alexandra Rak
- Department of Virology, Institute of Experimental Medicine, 197376 Saint Petersburg, Russia
| | - Anastasia Katelnikova
- Department of Toxicology and Microbiology, Institute of Preclinical Research Ltd., 188663 Saint Petersburg, Russia
| | - Denis Gusev
- Botkin Infectious Diseases Hospital, Piskarovskiy Ave 49, 195067 Saint Petersburg, Russia
| | - Larisa Rudenko
- Department of Virology, Institute of Experimental Medicine, 197376 Saint Petersburg, Russia
| | - Irina Isakova-Sivak
- Department of Virology, Institute of Experimental Medicine, 197376 Saint Petersburg, Russia
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13
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Pacheco-García U, Serafín-López J. Indirect Dispersion of SARS-CoV-2 Live-Attenuated Vaccine and Its Contribution to Herd Immunity. Vaccines (Basel) 2023; 11:655. [PMID: 36992239 PMCID: PMC10055900 DOI: 10.3390/vaccines11030655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 03/03/2023] [Accepted: 03/07/2023] [Indexed: 03/16/2023] Open
Abstract
It has been 34 months since the beginning of the SARS-CoV-2 coronavirus pandemic, which causes the COVID-19 disease. In several countries, immunization has reached a proportion near what is required to reach herd immunity. Nevertheless, infections and re-infections have been observed even in vaccinated persons. That is because protection conferred by vaccines is not entirely effective against new virus variants. It is unknown how often booster vaccines will be necessary to maintain a good level of protective immunity. Furthermore, many individuals refuse vaccination, and in developing countries, a large proportion of the population has not yet been vaccinated. Some live-attenuated vaccines against SARS-CoV-2 are being developed. Here, we analyze the indirect dispersion of a live-attenuated virus from vaccinated individuals to their contacts and the contribution that this phenomenon could have to reaching Herd Immunity.
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Affiliation(s)
- Ursino Pacheco-García
- Department of Cardio-Renal Pathophysiology, Instituto Nacional de Cardiología “Ignacio Chávez”, Mexico City 14080, Mexico
| | - Jeanet Serafín-López
- Department of Immunology, Escuela Nacional de Ciencias Biológicas (ENCB), Instituto Politécnico Nacional (IPN), Mexico City 11340, Mexico
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14
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Yin Y, Zeng T, Lai M, Luan Z, Wang K, Ma Y, Hu Z, Wang K, Peng Z. Impact of antibody-level on viral shedding in B.1.617.2 (Delta) variant-infected patients analyzed using a joint model of longitudinal and time-to-event data. MATHEMATICAL BIOSCIENCES AND ENGINEERING : MBE 2023; 20:8875-8891. [PMID: 37161226 DOI: 10.3934/mbe.2023390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Knowledge of viral shedding remains limited. Repeated measurement data have been rarely used to explore the influencing factors. In this study, a joint model was developed to explore and validate the factors influencing the duration of viral shedding based on longitudinal data and survival data. We divided 361 patients infected with Delta variant hospitalized in Nanjing Second Hospital into two groups (≤ 21 days group and > 21 days group) according to the duration of viral shedding, and compared their baseline characteristics. Correlation analysis was performed to identify the factors influencing the duration of viral shedding. Further, a joint model was established based on longitudinal data and survival data, and the Markov chain Monte Carlo algorithm was used to explain the influencing factors. In correlation analysis, patients having received vaccination had a higher antibody level at admission than unvaccinated patients, and with the increase of antibody level, the duration of viral shedding shortened. The linear mixed-effects model showed the longitudinal variation of logSARS-COV-2 IgM sample/cutoff (S/CO) values, with a parameter estimate of 0.193 and a standard error of 0.017. Considering gender as an influencing factor, the parameter estimate of the Cox model and their standard error were 0.205 and 0.1093 (P = 0.608), the corresponding OR value was 1.228. The joint model output showed that SARS-COV-2 IgM (S/CO) level was strongly associated with the risk of a composite event at the 95% confidence level, and a doubling of SARS-COV-2 IgM (S/CO) level was associated with a 1.38-fold (95% CI: [1.16, 1.72]) increase in the risk of viral non-shedding. A higher antibody level in vaccinated patients, as well as the presence of IgM antibodies in serum, can accelerate shedding of the mutant virus. This study provides some evidence support for vaccine prevention and control of COVID-19 variants.
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Affiliation(s)
- Yi Yin
- School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Ting Zeng
- College of Public Health, Xinjiang Medical University, Urumqi 830017, China
| | - Miao Lai
- School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Zemin Luan
- College of Public Health, Xinjiang Medical University, Urumqi 830017, China
| | - Kai Wang
- Jiangsu Provincial Key Laboratory of Geriatrics, Department of Geriatrics, The First Affiliated Hospital of Nanjing Medical University, Nanjing 211166, China
| | - Yuhang Ma
- School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Zhiliang Hu
- Department of Infectious Disease, the Second Hospital of Nanjing, Nanjing University of Chinese Medicine, Nanjing 210003, China
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Kai Wang
- Department of Medical Engineering and Technology, Xinjiang Medical University, Urumqi 830017, China
| | - Zhihang Peng
- School of Public Health, Nanjing Medical University, Nanjing 211166, China
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15
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Palumbo GA, Cambria D, La Spina E, Duminuco A, Laneri A, Longo A, Vetro C, Giallongo S, Romano A, Di Raimondo F, Tibullo D, Giallongo C. Ruxolitinib treatment in myelofibrosis and polycythemia vera causes suboptimal humoral immune response following standard and booster vaccination with BNT162b2 mRNA COVID-19 vaccine. Front Oncol 2023; 13:1117815. [PMID: 36865808 PMCID: PMC9974162 DOI: 10.3389/fonc.2023.1117815] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 01/31/2023] [Indexed: 02/16/2023] Open
Abstract
Patients affected by myelofibrosis (MF) or polycythemia vera (PV) and treated with ruxolitinib are at high risk for severe coronavirus disease 2019. Now a vaccine against the virus SARS-CoV-2, which is responsible for this disease, is available. However, sensitivity to vaccines is usually lower in these patients. Moreover, fragile patients were not included in large trials investigating the efficacy of vaccines. Thus, little is known about the efficacy of this approach in this group of patients. In this prospective single-center study, we evaluated 43 patients (30 MF patients and 13 with PV) receiving ruxolitinib as a treatment for their myeloproliferative disease. We measured anti-spike and anti-nucleocapsid IgG against SARS-CoV2 15-30 days after the second and the third BNT162b2 mRNA vaccine booster dose. Patients receiving ruxolitinib showed an impaired antibody response to complete vaccination (2 doses), as 32.5% of patients did not develop any response. After the third booster dose with Comirnaty, results slightly improved, as 80% of these patients produced antibodies above the threshold positivity. However, the quantity of produced antibodies was well below that reached than those reported for healthy individuals. PV patients elicited a better response than patients affected by MF. Thus, different strategies should be considered for this high-risk group of patients.
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Affiliation(s)
- Giuseppe A. Palumbo
- Dipartimento di Scienze Mediche Chirurgiche e Tecnologie Avanzate “G.F. Ingrassia”, University of Catania, Catania, Italy,*Correspondence: Giuseppe A. Palumbo, ; Daniele Tibullo,
| | - Daniela Cambria
- Unità Operativa Complessa di Ematologia con Trapianto di Midollo Osseo, Azienda Ospedaliero-Universitaria Policlinico “G.Rodolico-San Marco”, Catania, Italy
| | - Enrico La Spina
- Unità Operativa Complessa di Ematologia con Trapianto di Midollo Osseo, Azienda Ospedaliero-Universitaria Policlinico “G.Rodolico-San Marco”, Catania, Italy
| | - Andrea Duminuco
- Postgraduate School of Hematology, University of Catania, Catania, Italy
| | - Antonio Laneri
- Servizio Immuno-Trasfusionale, Azienda Ospedaliero-Universitaria Policlinico “G.Rodolico-San Marco”, Catania, Italy
| | - Anna Longo
- Unità Operativa Complessa di Ematologia con Trapianto di Midollo Osseo, Azienda Ospedaliero-Universitaria Policlinico “G.Rodolico-San Marco”, Catania, Italy
| | - Calogero Vetro
- Unità Operativa Complessa di Ematologia con Trapianto di Midollo Osseo, Azienda Ospedaliero-Universitaria Policlinico “G.Rodolico-San Marco”, Catania, Italy
| | - Sebastiano Giallongo
- Dipartimento di Chirurgia Generale e Specialità Medico-Chirurgiche, University of Catania, Catania, Italy
| | - Alessandra Romano
- Dipartimento di Chirurgia Generale e Specialità Medico-Chirurgiche, University of Catania, Catania, Italy
| | - Francesco Di Raimondo
- Dipartimento di Chirurgia Generale e Specialità Medico-Chirurgiche, University of Catania, Catania, Italy
| | - Daniele Tibullo
- Dipartimento di Scienze Biomediche e Biotecnologiche, University of Catania, Catania, Italy,*Correspondence: Giuseppe A. Palumbo, ; Daniele Tibullo,
| | - Cesarina Giallongo
- Dipartimento di Scienze Mediche Chirurgiche e Tecnologie Avanzate “G.F. Ingrassia”, University of Catania, Catania, Italy
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16
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Kirste I, Hortsch S, Grunert VP, Legault H, Maglinao M, Eichenlaub U, Kashlan B, Pajon R, Jochum S. Quantifying the Vaccine-Induced Humoral Immune Response to Spike-Receptor Binding Domain as a Surrogate for Neutralization Testing Following mRNA-1273 (Spikevax) Vaccination Against COVID-19. Infect Dis Ther 2023; 12:177-191. [PMID: 36376733 PMCID: PMC9663276 DOI: 10.1007/s40121-022-00711-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 09/30/2022] [Indexed: 11/16/2022] Open
Abstract
INTRODUCTION There is a need for automated, high-throughput assays to quantify immune response after SARS-CoV-2 vaccination. This study assessed the combined utility of the Elecsys® Anti-SARS-CoV-2 S (ACOV2S) and the Elecsys Anti-SARS-CoV-2 (ACOV2N) assays using samples from the mRNA-1273 (Spikevax™) phase 2 trial (NCT04405076). METHODS Samples from 593 healthy participants in two age cohorts (18-54 and ≥ 55 years), who received two injections with placebo (n = 198) or mRNA-1273 (50 μg [n = 197] or 100 μg [n = 198]), were collected at days 1 (first vaccination), 15, 29 (second vaccination), 43, and 57. ACOV2S results were used to assess humoral response to vaccination in different subgroups and were compared to live virus microneutralization assay. Samples from patients with either previous or concomitant infection (identified per ACOV2N) were analyzed separately. RESULTS Receptor-binding domain-specific antibodies were readily detectable by ACOV2S for the vast majority of participants (174/189, 92.1% [50 μg dose] and 178/192, 92.7% [100 μg dose]) at the first post-vaccination assessment, with non-converters predominantly older in age. Seroconversion for all participants was observed at day 29 (before the second vaccine dose). Two weeks after the first dose, geometric mean concentration (GMC) of antibody levels was 1.37-fold higher in the 100 versus 50 μg group (p = 0.0098), reducing to 1.09-fold 2 weeks after the second dose (p = 0.0539, n.s.). In both dose groups, a more pronounced response was observed in the younger versus older age group on day 15 (50 μg, 2.49-fold [p < 0.0001]; 100 μg, 3.94-fold [p < 0.0001] higher GMC, respectively), and day 29 (1.93-fold, p = 0.0002, and 2.44-fold, p < 0.0001). Eight subjects had previous or concomitant SARS-CoV-2 infection; vaccination boosted their humoral response to very high ACOV2S results compared to infection-naïve recipients. ACOV2S strongly correlated with microneutralization (Pearson's r = 0.779; p < 0.0001), including good qualitative agreement. CONCLUSION These results confirmed that ACOV2S is a highly valuable assay for tracking vaccine-related immune responses. Combined application with ACOV2N enables monitoring for breakthrough infection or stratification of previous natively infected individuals. The adaptive measuring range and high resolution of ACOV2S allow for early identification of seroconversion and resolution of very high titers and longitudinal differences between subgroups. Additionally, good correlation with live virus microneutralization suggests that ACOV2S is a reliable estimate of neutralization capacity in routine diagnostic settings.
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Affiliation(s)
- Imke Kirste
- Clinical Development & Medical Affairs, Roche Diagnostics Operations, Indianapolis, USA
| | - Sayuri Hortsch
- Biostatistics and Data Science, Roche Diagnostics GmbH, Penzberg, Germany
| | - Veit Peter Grunert
- Biostatistics and Data Science, Roche Diagnostics GmbH, Penzberg, Germany
| | - Holly Legault
- Clinical Biomarkers, Moderna, Inc, 200 Technology Square, Cambridge, MA 02139 USA
| | - Maha Maglinao
- Clinical Biomarkers, Moderna, Inc, 200 Technology Square, Cambridge, MA 02139 USA
| | - Udo Eichenlaub
- Clinical Development & Medical Affairs, Roche Diagnostics Operations, Indianapolis, USA
| | - Basel Kashlan
- Lab Operations, PPD, Part of Thermo Fisher Scientific, Highland Heights, KY USA
| | - Rolando Pajon
- Clinical Biomarkers, Moderna, Inc, 200 Technology Square, Cambridge, MA 02139 USA
| | - Simon Jochum
- Research and Development Immunoassays, Roche Diagnostics GmbH, Nonnenwald 2, 82377 Penzberg, Germany
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17
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McCullagh L, Sheehy N, De Gascun CF, Hassan J. D614G SARS-CoV-2 Pseudovirus Infectivity and Binding of Spike Protein to the ACE2 Receptor Inversely Correlates with Serum SARS-CoV-2-Specific IgG Levels. Viral Immunol 2023; 36:63-70. [PMID: 36648773 DOI: 10.1089/vim.2022.0117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Understanding the functional characteristics of antibodies produced against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) will assist in the determination of disease outcomes for this virus. In this study, the ability of antibodies to inhibit viral entry into the host cell through the interaction of the receptor binding domain of the viral spike protein and the angiotensin-converting enzyme 2 receptor on the human cell surface was investigated. The SARS-CoV-2 IgG levels in 20 SARS-CoV-2 positive patients were measured using an enzyme-linked immunosorbent assay, and the samples were further analyzed using a functional binding assay. Inhibition of viral infectivity was also measured using a pseudovirus neutralization assay against a D614G SARS-CoV-2 virus strain. A significant correlation between IgG levels and neutralizing antibody 50% inhibitory concentration (IC50) titers was observed (p < 0.05). Similarly, the IC50 titers obtained in the neutralization and binding assays were significantly correlated (p < 0.001). Varying levels of IgG and IC50 titers were observed for the SARS-CoV-2 antibody-positive samples, with one sample not showing any neutralizing capability despite detectable IgG levels. Gender comparisons showed no statistical differences in any of the assays. These results suggest that increased SARS-CoV-2 IgG levels correlate with greater protection against the entry of the virus into cells; however, further investigations in larger studies are needed to confirm the correlates of protection.
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Affiliation(s)
- Laura McCullagh
- National Virus Reference Laboratory, University College Dublin, Dublin, Ireland
| | - Noreen Sheehy
- Centre for Experimental Pathogen Host Research, University College Dublin, Dublin, Ireland
| | - Cillian F De Gascun
- National Virus Reference Laboratory, University College Dublin, Dublin, Ireland
| | - Jaythoon Hassan
- National Virus Reference Laboratory, University College Dublin, Dublin, Ireland
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18
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Ziemssen T, Groth M, Ettle B, Bopp T. Immune Response to SARS-CoV-2 mRNA Vaccines in an Open-Label Multicenter Study in Participants with Relapsing Multiple Sclerosis Treated with Ofatumumab. Vaccines (Basel) 2022; 10:vaccines10122167. [PMID: 36560576 PMCID: PMC9782480 DOI: 10.3390/vaccines10122167] [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: 11/23/2022] [Revised: 12/12/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND It is unclear whether multiple sclerosis (MS) patients receiving ofatumumab mount an immune response after SARS-CoV-2 mRNA vaccination. METHODS KYRIOS is an ongoing, multicenter, open-label, prospective clinical study on immune responses in MS patients after initial or booster SARS-CoV-2 mRNA vaccination prior to (cohort 1) or during (cohort 2) ofatumumab treatment. We report one-week and one-month results of the initial vaccination. A comparison with patients vaccinated while receiving beta-interferon, glatiramer acetate, dimethyl fumarate, teriflunomide or no treatment was included (cohort 3). RESULTS In total, 11 patients received their initial vaccination during the study. The primary endpoint of SARS-CoV-2-specific T-cells at month 1 was reached by 80.0% of patients in cohort 1 (N = 6) and 100.0% in cohort 2 (N = 5). T-cell reactivity peaked at week 1. All cohort 1 patients reached seroconversion for SARS-CoV-2 neutralizing antibodies at week 1 and month 1. In cohort 2, neutralizing antibodies increased in all patients and exceeded the cut-off for seropositivity in 40.0% of patients at week 1 and 25.0% at month 1. Immune responses in cohort 3 were comparable to cohort 1. CONCLUSION Presence of T-cell response and increase in levels of neutralizing antibodies, although less pronounced compared to controls, suggest that MS patients receiving ofatumumab are able to mount an immune response to SARS-CoV-2 mRNA vaccination.
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Affiliation(s)
- Tjalf Ziemssen
- Department of Neurology, Center of Clinical Neuroscience, University Hospital Carl Gustav Carus at the TU Dresden, 01307 Dresden, Germany
- Correspondence:
| | - Marie Groth
- Novartis Pharma GmbH, 90429 Nuremberg, Germany
| | | | - Tobias Bopp
- Institute for Immunology, University Medical Center of the Johannes Gutenberg University, 55131 Mainz, Germany
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19
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Haghighi M, Khorasani A, Karimi P, Keshavarz R, Mahdavi M. Different Formulations of Inactivated SARS-CoV-2 Vaccine Candidates in Human Compatible Adjuvants: Potency Studies in Mice Showed Different Platforms of Immune Responses. Viral Immunol 2022; 35:663-672. [PMID: 36534465 DOI: 10.1089/vim.2022.0022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Several inactivated SARS-CoV-2 vaccines have been approved for human use, but are not highly potent. In this study, different formulations of the inactivated SARS-CoV-2 virus were developed in Alum, Montanide 51VG, and Montanide ISA720VG adjuvants, followed by assessment of immune responses. The SARS-CoV-2 virus was inactivated with formalin and formulated in the adjuvants. BALB/c mice were immunized subcutaneously with 4 μg of vaccines on days 0 and 14; (IL-4) and (IFN-g), cytotoxic T lymphocyte (CTL) activity, and specific immunoglobulin G (IgG) titer and IgG1, IgG2a, and IgG2a/IgG1 ratio, and anti-receptor-binding domain (RBD) IgG response were assessed 2 weeks after the final immunization. Immunization with SARS-CoV-2-Montanide ISA51VG showed a significant increase in the IFN-γ cytokine versus SARS-CoV-2-Alum, SARS-CoV-2-Montanide ISA720VG, and control groups (p < 0.0033). Cytokine IL-4 response in SARS-CoV-2-Alum group showed a significant increase compared with SARS-CoV-2-Montanide ISA51VG, SARS-CoV-2-Montanide ISA720VG, and control groups (p < 0.0206). In addition, SARS-CoV-2-Montanide ISA51VG vaccine induced the highest IFN-γ/IL-4 cytokine ratio versus other groups (p < 0.0004). CTL activity in SARS-CoV-2-Montanide ISA51VG and SARS-CoV-2-Montanide ISA720VG groups showed a significant increase compared with SARS-CoV-2-Alum and control groups (p < 0.0075). Specific IgG titer in SARS-CoV-2-Montanide ISA51 VG and SARS-CoV-2-Montanide ISA720VG showed a significant increase compared with SARS-CoV-2-Alum and control groups (p < 0.0143). Results from specific IgG1and IgG2a in SARS-CoV-2-Alum, SARS-CoV-2-Montanide ISA51VG, and SARS-CoV-2-Montanide ISA720VG vaccine showed a significant increase compared with phosphate buffer saline (PBS) group (p < 0.0001), but SARS-CoV-2-Montanide ISA51VG and SARS-CoV-2-Montanide ISA 720VG groups showed the highest IgG2a/IgG1 ratio and a significant increase compared with SARS-CoV-2-Alum group (p < 0.0379). Moreover, inactivated SARS-CoV-2+Alum and SARS-CoV-2-Montanide ISA 720VG groups demonstrated a significant increase in anti-RBD IgG response versus the SARS-CoV-2-Montanide ISA51VG group. It seems that the type of vaccine formulation is a critical parameter, influencing the immunologic pattern and vaccine potency and human-compatible oil-based adjuvants were more potent than Alum adjuvant in the vaccine formulation.
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Affiliation(s)
- Melika Haghighi
- Department of FMD Vaccine Production, Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
| | - Akbar Khorasani
- Department of FMD Vaccine Production, Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
| | - Pegah Karimi
- Department of Biochemistry, Faculty of Basic Sciences, Islamic Azad University, Tehran, Iran
| | - Rouhollah Keshavarz
- PPD Tuberculin Department, Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
| | - Mehdi Mahdavi
- Advanced Therapy Medicinal Product (ATMP) Department, Breast Cancer Research Center, Motamed Cancer Institute, Academic Center for Education, Culture and Research (ACECR), Tehran, Iran.,Recombinant Vaccine Research Center, Tehran University of Medical Sciences, Tehran, Iran.,Immunotherapy Group, The Institute of Pharmaceutical Science (TIPS), Tehran University of Medical Science, Tehran, Iran
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20
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Outliers Matter—Correlation between S1 IgG SARS-CoV-2 Antibodies and Neutralizing SARS-CoV-2 Antibodies. Microorganisms 2022; 10:microorganisms10102067. [DOI: 10.3390/microorganisms10102067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/09/2022] [Accepted: 10/10/2022] [Indexed: 11/17/2022] Open
Abstract
Vaccination against the SARS-CoV-2 virus or infection with SARS-CoV-2 will lead to the development of IgG antibodies against the S1 protein of the SARS-CoV-2 virus. However, even despite having high levels of IgG antibodies against the S1 protein of the SARS-CoV-2 virus, (re-)infection may occur. We thus examined 2994 consecutive blood samples of outpatients from the Berlin-Brandenburg area in Germany in which IgG antibodies against the S1 protein of the SARS-CoV-2 virus as well as neutralizing SARS-CoV-2 virus antibodies were determined from the same sample. When analyzing the entire study population (2994 outpatients), we saw that S1 IgG antibodies (women: 223.98 ± 3.81; men: 207.80 ± 4.59; p = 0.014) and neutralizing antibodies (women: 66.65 ± 0.82; men: 62.88 ± 1.01; p = 0.021) are slightly higher in women than in men. Curve fitting revealed a good non-linear relationship between S1 IgG and neutralizing SARS-CoV-2 antibodies. However, 51 out of the 2994 blood samples from individual subjects were positive with regard to the neutralizing antibodies and at the same time negative for S1 IgG antibodies, and 112 out of the 2994 blood samples from individual subjects were negative with regard to the neutralizing antibodies and at the same time positive for S1 IgG antibodies. In conclusion, our study shows that there is a relevant number of patients who, despite developing significant titers of S1 antibodies, do not have relevant amounts of neutralizing antibody titers and are probably at high risk of (re-)infection.
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21
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Silva MJA, Ribeiro LR, Lima KVB, Lima LNGC. Adaptive immunity to SARS-CoV-2 infection: A systematic review. Front Immunol 2022; 13:1001198. [PMID: 36300105 PMCID: PMC9589156 DOI: 10.3389/fimmu.2022.1001198] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Accepted: 09/26/2022] [Indexed: 01/08/2023] Open
Abstract
Background There is evidence that the adaptive or acquired immune system is one of the crucial variables in differentiating the course of coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). This work aimed to analyze the immunopathological aspects of adaptive immunity that are involved in the progression of this disease. Methods This is a systematic review based on articles that included experimental evidence from in vitro assays, cohort studies, reviews, cross-sectional and case-control studies from PubMed, SciELO, MEDLINE, and Lilacs databases in English, Portuguese, or Spanish between January 2020 and July 2022. Results Fifty-six articles were finalized for this review. CD4+ T cells were the most resolutive in the health-disease process compared with B cells and CD8+ T lymphocytes. The predominant subpopulations of T helper lymphocytes (Th) in critically ill patients are Th1, Th2, Th17 (without their main characteristics) and regulatory T cells (Treg), while in mild cases there is an influx of Th1, Th2, Th17 and follicular T helper cells (Tfh). These cells are responsible for the secretion of cytokines, including interleukin (IL) - 6, IL-4, IL-10, IL-7, IL-22, IL-21, IL-15, IL-1α, IL-23, IL-5, IL-13, IL-2, IL-17, tumor necrosis factor alpha (TNF-α), CXC motivating ligand (CXCL) 8, CXCL9 and tumor growth factor beta (TGF-β), with the abovementioned first 8 inflammatory mediators related to clinical benefits, while the others to a poor prognosis. Some CD8+ T lymphocyte markers are associated with the severity of the disease, such as human leukocyte antigen (HLA-DR) and programmed cell death protein 1 (PD-1). Among the antibodies produced by SARS-CoV-2, Immunoglobulin (Ig) A stood out due to its potent release associated with a more severe clinical form. Conclusions It is concluded that through this study it is possible to have a brief overview of the main immunological biomarkers and their function during SARS-CoV-2 infection in particular cell types. In critically ill individuals, adaptive immunity is varied, aberrantly compromised, and late. In particular, the T-cell response is also an essential and necessary component in immunological memory and therefore should be addressed in vaccine formulation strategies.
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Affiliation(s)
- Marcos Jessé Abrahão Silva
- Graduate Program in Epidemiology and Health Surveillance (PPGEVS), Bacteriology and Mycology Section (SABMI), Evandro Chagas Institute (IEC), Ananindeua, Brazil
- Bacteriology and Mycology Section (SABMI), Evandro Chagas Institute (IEC), Ananindeua, Brazil
- *Correspondence: Marcos Jessé Abrahão Silva,
| | - Layana Rufino Ribeiro
- Bacteriology and Mycology Section (SABMI), Evandro Chagas Institute (IEC), Ananindeua, Brazil
| | | | - Luana Nepomuceno Gondim Costa Lima
- Graduate Program in Epidemiology and Health Surveillance (PPGEVS), Bacteriology and Mycology Section (SABMI), Evandro Chagas Institute (IEC), Ananindeua, Brazil
- Bacteriology and Mycology Section (SABMI), Evandro Chagas Institute (IEC), Ananindeua, Brazil
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22
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Chen YL, Lin JJ, Ma H, Zhong N, Xie XX, Yang Y, Zheng P, Zhang LJ, Jin T, Cao MJ. Screening and Characterization of Shark-Derived VNARs against SARS-CoV-2 Spike RBD Protein. Int J Mol Sci 2022; 23:ijms231810904. [PMID: 36142819 PMCID: PMC9502636 DOI: 10.3390/ijms231810904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 09/11/2022] [Accepted: 09/15/2022] [Indexed: 12/03/2022] Open
Abstract
The receptor-binding domain (RBD) of the SARS-CoV-2 spike protein is the major target for antibody therapeutics. Shark-derived variable domains of new antigen receptors (VNARs) are the smallest antibody fragments with flexible paratopes that can recognize protein motifs inaccessible to classical antibodies. This study reported four VNARs binders (JM-2, JM-5, JM-17, and JM-18) isolated from Chiloscyllium plagiosum immunized with SARS-CoV-2 RBD. Biolayer interferometry showed that the VNARs bound to the RBD with an affinity KD ranging from 38.5 to 2720 nM, and their Fc fusions had over ten times improved affinity. Gel filtration chromatography revealed that JM-2-Fc, JM-5-Fc, and JM-18-Fc could form stable complexes with RBD in solution. In addition, five bi-paratopic VNARs, named JM-2-5, JM-2-17, JM-2-18, JM-5-18, and JM-17-18, were constructed by fusing two VNARs targeting distinct RBD epitopes based on epitope grouping results. All these bi-paratopic VNARs except for JM-5-18 showed higher RBD binding affinities than its component VNARs, and their Fc fusions exhibited further enhanced binding affinities, with JM-2-5-Fc, JM-2-17-Fc, JM-2-18-Fc, and JM-5-18-Fc having KD values lower than 1 pM. Among these Fc fusions of bi-paratopic VNARs, JM-2-5-Fc, JM-2-17-Fc, and JM-2-18-Fc could block the angiotensin-converting enzyme 2 (ACE2) binding to the RBD of SARS-CoV-2 wildtype, Delta, Omicron, and SARS-CoV, with inhibition rates of 48.9~84.3%. Therefore, these high-affinity VNAR binders showed promise as detectors and therapeutics of COVID-19.
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Affiliation(s)
- Yu-Lei Chen
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Jin-Jin Lin
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Huan Ma
- CAS Key Laboratory of Innate Immunity and Chronic Disease, Division of Life Sciences and Medicine, University of Science & Technology of China, Hefei 230007, China
| | - Ning Zhong
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Xin-Xin Xie
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Yunru Yang
- CAS Key Laboratory of Innate Immunity and Chronic Disease, Division of Life Sciences and Medicine, University of Science & Technology of China, Hefei 230007, China
| | - Peiyi Zheng
- CAS Key Laboratory of Innate Immunity and Chronic Disease, Division of Life Sciences and Medicine, University of Science & Technology of China, Hefei 230007, China
| | - Ling-Jing Zhang
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
| | - Tengchuan Jin
- CAS Key Laboratory of Innate Immunity and Chronic Disease, Division of Life Sciences and Medicine, University of Science & Technology of China, Hefei 230007, China
- Correspondence: (T.J.); (M.-J.C.); Tel.: +86-551-6360-0720 (T.J.); +86-592-618-3955 (M.-J.C.)
| | - Min-Jie Cao
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China
- Correspondence: (T.J.); (M.-J.C.); Tel.: +86-551-6360-0720 (T.J.); +86-592-618-3955 (M.-J.C.)
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23
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Violán C, Torán-Monserrat P, Quirant B, Lamonja-Vicente N, Carrasco-Ribelles LA, Chacón C, Manresa-Dominguez JM, Ramos-Roure F, Dacosta-Aguayo R, Palacios-Fernández C, Roso-Llorach A, Pujol A, Ouchi D, Monteagudo M, Montero-Alia P, Garcia-Sierra R, Arméstar F, Doladé M, Prat N, Bonet JM, Clotet B, Blanco I, Boigues-Pons M, Moreno-Millán N, Prado JG, Cáceres EMM. Kinetics of humoral immune response over 17 months of COVID-19 pandemic in a large cohort of healthcare workers in Spain: the ProHEpiC-19 study. BMC Infect Dis 2022; 22:721. [PMID: 36057544 PMCID: PMC9439943 DOI: 10.1186/s12879-022-07696-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 08/17/2022] [Indexed: 12/15/2022] Open
Abstract
Background Understanding the immune response to the SARS-CoV-2 virus is critical for efficient monitoring and control strategies. The ProHEpic-19 cohort provides a fine-grained description of the kinetics of antibodies after SARS-CoV-2 infection with an exceptional resolution over 17 months. Methods We established a cohort of 769 healthcare workers including healthy and infected with SARS-CoV-2 in northern Barcelona to determine the kinetics of the IgM against the nucleocapsid (N) and the IgG against the N and spike (S) of SARS-CoV-2 in infected healthcare workers. The study period was from 5 May 2020 to 11 November 2021.We used non-linear mixed models to investigate the kinetics of IgG and IgM measured at nine time points over 17 months from the date of diagnosis. The model included factors of time, gender, and disease severity (asymptomatic, mild-moderate, severe-critical) to assess their effects and their interactions. Findings 474 of the 769 participants (61.6%) became infected with SARS-CoV-2. Significant effects of gender and disease severity were found for the levels of all three antibodies. Median IgM(N) levels were already below the positivity threshold in patients with asymptomatic and mild-moderate disease at day 270 after the diagnosis, while IgG(N and S) levels remained positive at least until days 450 and 270, respectively. Kinetic modelling showed a general rise in both IgM(N) and IgG(N) levels up to day 30, followed by a decay with a rate depending on disease severity. IgG(S) levels remained relatively constant from day 15 over time. Interpretation IgM(N) and IgG(N, S) SARS-CoV-2 antibodies showed a heterogeneous kinetics over the 17 months. Only the IgG(S) showed a stable increase, and the levels and the kinetics of antibodies varied according to disease severity. The kinetics of IgM and IgG observed over a year also varied by clinical spectrum can be very useful for public health policies around vaccination criteria in adult population. Funding Regional Ministry of Health of the Generalitat de Catalunya (Call COVID19-PoC SLT16_04; NCT04885478). Supplementary Information The online version contains supplementary material available at 10.1186/s12879-022-07696-6.
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Affiliation(s)
- Concepción Violán
- Institut Universitari d'Investigació en Atenció Primària Jordi Gol (IDIAP Jordi Gol), Unitat de Suport a la Recerca Metropolitana Nord, Mare de Déu de Guadalupe 2, Planta 1ª, Mataro, 08303, Barcelona, Spain. .,Direcció d'Atenció Primària Metropolitana Nord Institut Català de Salut, Barcelona, Spain. .,Germans Trias i Pujol Research Institute (IGTP), Camí de les Escoles, S/N, Badalona, 08916, Barcelona, Spain. .,Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain.
| | - Pere Torán-Monserrat
- Institut Universitari d'Investigació en Atenció Primària Jordi Gol (IDIAP Jordi Gol), Unitat de Suport a la Recerca Metropolitana Nord, Mare de Déu de Guadalupe 2, Planta 1ª, Mataro, 08303, Barcelona, Spain.,Direcció d'Atenció Primària Metropolitana Nord Institut Català de Salut, Barcelona, Spain.,Germans Trias i Pujol Research Institute (IGTP), Camí de les Escoles, S/N, Badalona, 08916, Barcelona, Spain.,Department of Medicine, Faculty of Medicine, Universitat de Girona, 17003, Girona, Spain.,Multidisciplinary Research Group in Health and Society GREMSAS (2017 SGR 917), 08007, Barcelona, Spain
| | - Bibiana Quirant
- Germans Trias i Pujol Research Institute (IGTP), Camí de les Escoles, S/N, Badalona, 08916, Barcelona, Spain.,Cell Biology, Physiology, Immunology Department, FOCIS Center of Excellence-Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain.,Immunology Division, Laboratori Clinic Metropolitana Nord (LCMN), Hospital Universitari Germans Trias i Pujol, Badalona, Spain
| | - Noemi Lamonja-Vicente
- Institut Universitari d'Investigació en Atenció Primària Jordi Gol (IDIAP Jordi Gol), Unitat de Suport a la Recerca Metropolitana Nord, Mare de Déu de Guadalupe 2, Planta 1ª, Mataro, 08303, Barcelona, Spain.,Direcció d'Atenció Primària Metropolitana Nord Institut Català de Salut, Barcelona, Spain
| | - Lucía A Carrasco-Ribelles
- Fundació Institut Universitari d'Investigació en Atenció Primària Jordi Gol (IDIAP Jordi Gol), Barcelona, Spain
| | - Carla Chacón
- Institut Universitari d'Investigació en Atenció Primària Jordi Gol (IDIAP Jordi Gol), Unitat de Suport a la Recerca Metropolitana Nord, Mare de Déu de Guadalupe 2, Planta 1ª, Mataro, 08303, Barcelona, Spain.,Direcció d'Atenció Primària Metropolitana Nord Institut Català de Salut, Barcelona, Spain
| | - Josep Maria Manresa-Dominguez
- Institut Universitari d'Investigació en Atenció Primària Jordi Gol (IDIAP Jordi Gol), Unitat de Suport a la Recerca Metropolitana Nord, Mare de Déu de Guadalupe 2, Planta 1ª, Mataro, 08303, Barcelona, Spain.,Direcció d'Atenció Primària Metropolitana Nord Institut Català de Salut, Barcelona, Spain.,Immunology Division, Laboratori Clinic Metropolitana Nord (LCMN), Hospital Universitari Germans Trias i Pujol, Badalona, Spain.,Department of Nursing, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - Francesc Ramos-Roure
- Institut Universitari d'Investigació en Atenció Primària Jordi Gol (IDIAP Jordi Gol), Unitat de Suport a la Recerca Metropolitana Nord, Mare de Déu de Guadalupe 2, Planta 1ª, Mataro, 08303, Barcelona, Spain.,Department of Medicine, Faculty of Medicine, Universitat Autónoma de Barcelona, 08193, Bellaterra, Spain
| | - Rosalia Dacosta-Aguayo
- Institut Universitari d'Investigació en Atenció Primària Jordi Gol (IDIAP Jordi Gol), Unitat de Suport a la Recerca Metropolitana Nord, Mare de Déu de Guadalupe 2, Planta 1ª, Mataro, 08303, Barcelona, Spain.,Germans Trias i Pujol Research Institute (IGTP), Camí de les Escoles, S/N, Badalona, 08916, Barcelona, Spain
| | - Cristina Palacios-Fernández
- Institut Universitari d'Investigació en Atenció Primària Jordi Gol (IDIAP Jordi Gol), Unitat de Suport a la Recerca Metropolitana Nord, Mare de Déu de Guadalupe 2, Planta 1ª, Mataro, 08303, Barcelona, Spain.,Direcció d'Atenció Primària Metropolitana Nord Institut Català de Salut, Barcelona, Spain
| | - Albert Roso-Llorach
- Fundació Institut Universitari d'Investigació en Atenció Primària Jordi Gol (IDIAP Jordi Gol), Barcelona, Spain.,Departament de Pediatria, d'Obstetrícia i Ginecologia i de Medicina Preventiva, Universitat Autónoma de Barcelona, 08193, Bellaterra, Spain
| | - Aleix Pujol
- Institut Universitari d'Investigació en Atenció Primària Jordi Gol (IDIAP Jordi Gol), Unitat de Suport a la Recerca Metropolitana Nord, Mare de Déu de Guadalupe 2, Planta 1ª, Mataro, 08303, Barcelona, Spain.,Germans Trias i Pujol Research Institute (IGTP), Camí de les Escoles, S/N, Badalona, 08916, Barcelona, Spain
| | - Dan Ouchi
- Fundació Institut Universitari d'Investigació en Atenció Primària Jordi Gol (IDIAP Jordi Gol), Barcelona, Spain.,AIDS Research Institute Irsicaixa, Badalona, Spain
| | - Mónica Monteagudo
- Fundació Institut Universitari d'Investigació en Atenció Primària Jordi Gol (IDIAP Jordi Gol), Barcelona, Spain
| | - Pilar Montero-Alia
- Institut Universitari d'Investigació en Atenció Primària Jordi Gol (IDIAP Jordi Gol), Unitat de Suport a la Recerca Metropolitana Nord, Mare de Déu de Guadalupe 2, Planta 1ª, Mataro, 08303, Barcelona, Spain.,Direcció d'Atenció Primària Metropolitana Nord Institut Català de Salut, Barcelona, Spain.,Department of Medicine, Faculty of Medicine, Universitat de Girona, 17003, Girona, Spain.,Centre d'Atenció Primària La Riera (Mataró 1), Institut Català de la Salut, Barcelona, Spain
| | - Rosa Garcia-Sierra
- Institut Universitari d'Investigació en Atenció Primària Jordi Gol (IDIAP Jordi Gol), Unitat de Suport a la Recerca Metropolitana Nord, Mare de Déu de Guadalupe 2, Planta 1ª, Mataro, 08303, Barcelona, Spain.,Department of Medicine, Faculty of Medicine, Universitat de Girona, 17003, Girona, Spain.,Department of Nursing, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - Fernando Arméstar
- Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain.,Intensive Care Unit, Hospital Universitari Germans Trias i Pujol, Badalona, Spain
| | - Maria Doladé
- Clinical and Biochemical Analysis Division, Laboratori Clinic Metropolitana Nord (LCMN), Hospital Universitari Germans Trias i Pujol, Badalona, Spain
| | - Nuria Prat
- Direcció d'Atenció Primària Metropolitana Nord Institut Català de Salut, Barcelona, Spain
| | - Josep Maria Bonet
- Direcció d'Atenció Primària Metropolitana Nord Institut Català de Salut, Barcelona, Spain
| | - Bonaventura Clotet
- Germans Trias i Pujol Research Institute (IGTP), Camí de les Escoles, S/N, Badalona, 08916, Barcelona, Spain.,AIDS Research Institute Irsicaixa, Badalona, Spain.,Lluita contra la SIDA Foundation, Hospital Universitari Germans Trias i Pujol, Badalona, Spain.,University of Vic-Central University of Catalonia (UVic-UCC), 08500, Vic, Spain
| | - Ignacio Blanco
- Hospital Universitari Germans Trias i Pujol, Badalona, Spain.,Gerència Territorial Metropolitana Nord, Institut Català de la Salut, Barcelona, Spain
| | - Marc Boigues-Pons
- Germans Trias i Pujol Research Institute (IGTP), Camí de les Escoles, S/N, Badalona, 08916, Barcelona, Spain.,Cell Biology, Physiology, Immunology Department, FOCIS Center of Excellence-Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain.,Immunology Division, Laboratori Clinic Metropolitana Nord (LCMN), Hospital Universitari Germans Trias i Pujol, Badalona, Spain
| | - Nemesio Moreno-Millán
- Direcció d'Atenció Primària Metropolitana Nord Institut Català de Salut, Barcelona, Spain
| | - Julia G Prado
- Germans Trias i Pujol Research Institute (IGTP), Camí de les Escoles, S/N, Badalona, 08916, Barcelona, Spain.,AIDS Research Institute Irsicaixa, Badalona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Infecciosas (CIBERINF), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Eva María Martínez Cáceres
- Germans Trias i Pujol Research Institute (IGTP), Camí de les Escoles, S/N, Badalona, 08916, Barcelona, Spain.,Cell Biology, Physiology, Immunology Department, FOCIS Center of Excellence-Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain.,Immunology Division, Laboratori Clinic Metropolitana Nord (LCMN), Hospital Universitari Germans Trias i Pujol, Badalona, Spain.,Department of Medicine, Faculty of Medicine, Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain
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Glucocorticoids' treatment impairs the medium-term immunogenic response to SARS-CoV-2 mRNA vaccines in Systemic Lupus Erythematosus patients. Sci Rep 2022; 12:14772. [PMID: 36042275 PMCID: PMC9427088 DOI: 10.1038/s41598-022-18996-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 08/23/2022] [Indexed: 11/17/2022] Open
Abstract
Limited data exists on SARS-CoV-2 sustained-response to vaccine in patients with rheumatic diseases. This study aims to evaluate neutralizing antibodies (nAB) induced by SARS-CoV-2 vaccine after 3 to 6 months from administration in Systemic Lupus Erythematosus (SLE) patients, as a surrogate of sustained-immunological response. This cross-sectional study compared nAB titre of 39 SLE patients and 37 Healthy individuals with no previous SARS-CoV-2 infection, who had all received a complete regimen of a mRNA SARS-CoV-2 vaccine within the last 3 to 6 months. We included four lines of SLE treatment including Not-treated, Hydroxychloroquine, immunosuppressive drugs and biological therapy. Glucocorticoids were allowed in all groups. Healthy and Not-treated individuals showed the highest levels of nAB. Treated patients presented lower nAB titres compared to Healthy: a 73% decrease for First-Line patients, 56% for Second-Line treatment and 72% for Third-Line. A multivariate analysis pointed to Glucocorticoids as the most associated factor with declining nAB levels (75% decrease) in treated SLE. Furthermore, a significant reduction in nAB titres was observed for Rituximab-users compared to Healthy subjects (89% decrease). Medium-term response of SLE patients to SARS-CoV-2 mRNA vaccines is negatively impacted in Glucocorticoids and Rituximab users. These findings might help to inform recommendations in vaccination protocols for SLE patients.
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25
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Zhang Y, Zheng X, Sheng W, Liang H, Zhao Y, Zhu X, Yang R, Zhang Y, Dong X, Li W, Pei F, Ding L, Chang Z, Deng L, Yuan G, Yang Z, Zhu D, Yang X, Wang H. Alum/CpG Adjuvanted Inactivated COVID-19 Vaccine with Protective Efficacy against SARS-CoV-2 and Variants. Vaccines (Basel) 2022; 10:vaccines10081208. [PMID: 36016098 PMCID: PMC9413105 DOI: 10.3390/vaccines10081208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 07/20/2022] [Accepted: 07/26/2022] [Indexed: 11/16/2022] Open
Abstract
Since the beginning of the COVID-19 pandemic, numerous variants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) have emerged, including five variants of concern (VOC) strains listed by the WHO: Alpha, Beta, Gamma, Delta and Omicron. Extensive studies have shown that most of these VOC strains, especially the currently dominant variant Omicron, can escape the host immune response induced by existing COVID-19 vaccines to different extents, which poses considerable risk to the health of human beings around the world. In the present study, we developed a vaccine based on inactivated SARS-CoV-2 and an adjuvant consisting of aluminum hydroxide (alum) and CpG. The immunogenicity and safety of the vaccine were investigated in rats. The candidate vaccine elicited high titers of SARS-CoV-2-spike-specific IgG antibody and neutralizing antibody in immunized rats, which not only neutralize the original SARS-CoV-2, but also showed great cross-neutralization activity against the Beta, Delta and Omicron variants.
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Affiliation(s)
- Yuntao Zhang
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
- China National Biotec Group Company Limited, Beijing 100024, China
| | - Xiaotong Zheng
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
| | - Wang Sheng
- College of Life Sciences and Biotechnology, Beijing University of Technology, Beijing 100021, China;
| | - Hongyang Liang
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
| | - Yuxiu Zhao
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
| | - Xiujuan Zhu
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
| | - Rong Yang
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
| | - Yadan Zhang
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
| | - Xiaofei Dong
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
| | - Weidong Li
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
| | - Fei Pei
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
| | - Ling Ding
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
| | - Zhen Chang
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
| | - Li Deng
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
| | - Guangying Yuan
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
| | - Zhaona Yang
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
| | - Di Zhu
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
| | - Xiaoming Yang
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
- China National Biotec Group Company Limited, Beijing 100024, China
- Correspondence: (X.Y.); (H.W.)
| | - Hui Wang
- Beijing Institute of Biological Products Company Limited, Beijing 100176, China; (Y.Z.); (X.Z.); (H.L.); (Y.Z.); (X.Z.); (R.Y.); (Y.Z.); (X.D.); (W.L.); (F.P.); (L.D.); (Z.C.); (L.D.); (G.Y.); (Z.Y.); (D.Z.)
- Correspondence: (X.Y.); (H.W.)
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Khan MS, Kim E, McPherson A, Weisel FJ, Huang S, Kenniston TW, Percivalle E, Cassaniti I, Baldanti F, Meisel M, Gambotto A. Adenovirus-vectored SARS-CoV-2 vaccine expressing S1-N fusion protein. Antib Ther 2022; 5:177-191. [PMID: 35967905 PMCID: PMC9372896 DOI: 10.1093/abt/tbac015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 06/27/2022] [Accepted: 07/04/2022] [Indexed: 11/13/2022] Open
Abstract
Additional COVID-19 vaccines that are safe and immunogenic are needed for global vaccine equity. Here, we developed a recombinant type 5 adenovirus vector encoding for the SARS-CoV-2 S1 subunit antigen and nucleocapsid as a fusion protein (Ad5.SARS-CoV-2-S1N). A single subcutaneous immunization with Ad5.SARS-CoV-2-S1N induced a similar humoral response, along with a significantly higher S1-specific cellular response, as a recombinant type 5 adenovirus vector encoding for S1 alone (Ad5.SARS-CoV-2-S1). Immunogenicity was improved by homologous prime-boost vaccination, and further improved through intramuscular heterologous prime-boost vaccination using subunit recombinant S1 protein. Priming with low dose (1 × 1010 v.p.) of Ad5.SARS-CoV-2-S1N and boosting with either wild-type recombinant rS1 or B.1.351 recombinant rS1 induced a robust neutralizing response, which was sustained against Beta and Gamma SARS-CoV-2 variants. This novel Ad5-vectored SARS-CoV-2 vaccine candidate showed promising immunogenicity in mice and supports the further development of COVID-19-based vaccines incorporating the nucleoprotein as a target antigen.
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Affiliation(s)
- Muhammad S Khan
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
| | - Eun Kim
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
| | - Alex McPherson
- Department of Infectious Diseases and Microbiology, University of Pittsburgh Graduate School of Public Health, Pittsburgh, PA 15261, USA
| | - Florian J Weisel
- Department of Immunology, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Shaohua Huang
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
| | - Thomas W Kenniston
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
| | - Elena Percivalle
- Molecular Virology Unit, Microbiology and Virology Department, IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Irene Cassaniti
- Molecular Virology Unit, Microbiology and Virology Department, IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Fausto Baldanti
- Molecular Virology Unit, Microbiology and Virology Department, IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Marlies Meisel
- Department of Immunology, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Andrea Gambotto
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
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27
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Pradenas E, Ubals M, Urrea V, Suñer C, Trinité B, Riveira-Muñoz E, Marfil S, Ávila-Nieto C, Rodríguez de la Concepción ML, Tarrés-Freixas F, Laporte J, Ballana E, Carrillo J, Clotet B, Mitjà O, Blanco J. Virological and Clinical Determinants of the Magnitude of Humoral Responses to SARS-CoV-2 in Mild-Symptomatic Individuals. Front Immunol 2022; 13:860215. [PMID: 35572570 PMCID: PMC9097229 DOI: 10.3389/fimmu.2022.860215] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Accepted: 04/01/2022] [Indexed: 12/21/2022] Open
Abstract
Background Evidence on the determinants of the magnitude of humoral responses and neutralizing titers in individuals with mild COVID-19 is scarce. Methods In this cohort study of mild COVID-19 patients, we assessed viral load (VL) by RT-qPCR at two/three time points during acute infection, and anti-SARS-CoV-2 antibodies by ELISA and plasma neutralizing responses using a pseudovirus assay at day 60. Results Seventy-one individuals (65% female, median 42 years old) were recruited and grouped into high viral load (VL) >7.5 Log10 copies/mL (n=20), low, VL ≤7.5 Log10 copies/mL (n=22), or as Non-early seroconverters with a positive PCR (n=20), and healthy individuals with a negative PCR (n=9). Individuals with high or low VL showed similar titers of total neutralizing antibodies at day 60, irrespective of maximal VL or viral dynamics. Non-early seroconverters had lower antibody titers on day 60, albeit similar neutralizing activity as the groups with high or low VL. Longer symptom duration and older age were independently associated with increased humoral responses. Conclusions In mild SARS-CoV-2-infected individuals, the duration of symptoms and age (but not VL) contribute to higher humoral responses.
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Affiliation(s)
| | - Maria Ubals
- Infectious Diseases Department, Fight against AIDS Foundation (FLS), Germans Trias i Pujol Hospital, Badalona, Spain
| | - Víctor Urrea
- IrsiCaixa AIDS Research Institute, Badalona, Spain
| | - Clara Suñer
- Infectious Diseases Department, Fight against AIDS Foundation (FLS), Germans Trias i Pujol Hospital, Badalona, Spain
| | | | | | | | | | | | | | - Josep Laporte
- Infectious Diseases Department, Fight against AIDS Foundation (FLS), Germans Trias i Pujol Hospital, Badalona, Spain
| | - Ester Ballana
- IrsiCaixa AIDS Research Institute, Badalona, Spain.,Germans Trias i Pujol Research Institute (IGTP), Badalona, Spain.,CIBERINFEC, ISCIII, Madrid, Spain
| | - Jorge Carrillo
- IrsiCaixa AIDS Research Institute, Badalona, Spain.,CIBERINFEC, ISCIII, Madrid, Spain
| | - Bonaventura Clotet
- IrsiCaixa AIDS Research Institute, Badalona, Spain.,Infectious Diseases Department, Fight against AIDS Foundation (FLS), Germans Trias i Pujol Hospital, Badalona, Spain.,CIBERINFEC, ISCIII, Madrid, Spain.,Chair in AIDS and Related Diseases, University of Vic-Central University of Catalonia (UVic-UCC), Vic, Spain
| | - Oriol Mitjà
- Infectious Diseases Department, Fight against AIDS Foundation (FLS), Germans Trias i Pujol Hospital, Badalona, Spain
| | - Julià Blanco
- IrsiCaixa AIDS Research Institute, Badalona, Spain.,Germans Trias i Pujol Research Institute (IGTP), Badalona, Spain.,CIBERINFEC, ISCIII, Madrid, Spain.,Chair in AIDS and Related Diseases, University of Vic-Central University of Catalonia (UVic-UCC), Vic, Spain
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28
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Callejas-Caballero I, Ruedas-López A, Berzosa-Sánchez A, Illán-Ramos M, Joyanes-Abancens B, Bodas-Pinedo A, Guillén-Martín S, Soto-Sánchez B, García-Bermejo I, Molina-Arana D, Alós JI, Baos-Muñoz E, Delgado-Iribarren A, Fuentes-Ferrer ME, Ramos-Amador JT. A Prospective Study of the Serological, Clinical, and Epidemiological Features of a SARS-CoV-2 Positive Pediatric Cohort. CHILDREN (BASEL, SWITZERLAND) 2022; 9:children9050665. [PMID: 35626842 PMCID: PMC9139432 DOI: 10.3390/children9050665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 04/21/2022] [Accepted: 04/29/2022] [Indexed: 12/04/2022]
Abstract
Background: SARS-CoV-2 was a global pandemic. Children develop a mild disease and may have a different rate of seroconversion compared to adults. The objective was to determine the number of seronegative patients in a pediatric cohort. We also reviewed the clinical−epidemiological features associated with seroconversion. Methods: A multicenter prospective observational study during September−November 2020, of COVID-19, confirmed by reverse transcription-polymerase chain reaction. Data were obtained 4−8 weeks after diagnosis. Blood samples were collected to investigate the humoral response, using three different serological methods. Results: A total of 111 patients were included (98 symptomatic), 8 were admitted to hospital, none required an Intensive Care Unit visit. Median age: 88 months (IQR: 24−149). Median time between diagnosis and serological test: 37 days (IQR: 34−44). A total of 19 patients were non-seroconverters when using three serological techniques (17.1%; 95% CI: 10.6−25.4); most were aged 2−10 years (35%, p < 0.05). Univariate analysis yielded a lower rate of seroconversion when COVID-19 confirmation was not present amongst household contacts (51.7%; p < 0.05). Conclusions: There was a high proportion of non-seroconverters. This is more commonly encountered in childhood than in adults. Most seronegative patients were in the group aged 2−10 years, and when COVID-19 was not documented in household contacts. Most developed a mild disease. Frequently, children were not the index case within the family.
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Affiliation(s)
- Ignacio Callejas-Caballero
- Department of Paediatrics, Collaborator at Instituto de Investigación Sanitaria del Hospital Universitario Clínico San Carlos (IdISSC), 28040 Madrid, Spain; (I.C.-C.); (A.B.-S.); (M.I.-R.); (B.J.-A.)
| | - Alba Ruedas-López
- Department of Microbiology, Collaborator at Instituto de Investigación Sanitaria del Hospital Universitario Clínico San Carlos (IdISSC), 28040 Madrid, Spain; (A.R.-L.); (E.B.-M.); (A.D.-I.)
| | - Arantxa Berzosa-Sánchez
- Department of Paediatrics, Collaborator at Instituto de Investigación Sanitaria del Hospital Universitario Clínico San Carlos (IdISSC), 28040 Madrid, Spain; (I.C.-C.); (A.B.-S.); (M.I.-R.); (B.J.-A.)
| | - Marta Illán-Ramos
- Department of Paediatrics, Collaborator at Instituto de Investigación Sanitaria del Hospital Universitario Clínico San Carlos (IdISSC), 28040 Madrid, Spain; (I.C.-C.); (A.B.-S.); (M.I.-R.); (B.J.-A.)
| | - Belén Joyanes-Abancens
- Department of Paediatrics, Collaborator at Instituto de Investigación Sanitaria del Hospital Universitario Clínico San Carlos (IdISSC), 28040 Madrid, Spain; (I.C.-C.); (A.B.-S.); (M.I.-R.); (B.J.-A.)
| | - Andrés Bodas-Pinedo
- Department of Paediatrics, Collaborator at Instituto de Investigación Sanitaria del Hospital Universitario Clínico San Carlos (IdISSC), 28040 Madrid, Spain; (I.C.-C.); (A.B.-S.); (M.I.-R.); (B.J.-A.)
- Correspondence: ; Tel.: +34-91-330-35-55
| | - Sara Guillén-Martín
- Department of Paediatrics, Hospital Universitario de Getafe, 28905 Madrid, Spain; (S.G.-M.); (B.S.-S.)
| | - Beatriz Soto-Sánchez
- Department of Paediatrics, Hospital Universitario de Getafe, 28905 Madrid, Spain; (S.G.-M.); (B.S.-S.)
| | - Isabel García-Bermejo
- Department of Microbiology, Hospital Universitario de Getafe, 28905 Madrid, Spain; (I.G.-B.); (D.M.-A.); (J.-I.A.)
| | - David Molina-Arana
- Department of Microbiology, Hospital Universitario de Getafe, 28905 Madrid, Spain; (I.G.-B.); (D.M.-A.); (J.-I.A.)
| | - Juan-Ignacio Alós
- Department of Microbiology, Hospital Universitario de Getafe, 28905 Madrid, Spain; (I.G.-B.); (D.M.-A.); (J.-I.A.)
| | - Elvira Baos-Muñoz
- Department of Microbiology, Collaborator at Instituto de Investigación Sanitaria del Hospital Universitario Clínico San Carlos (IdISSC), 28040 Madrid, Spain; (A.R.-L.); (E.B.-M.); (A.D.-I.)
| | - Alberto Delgado-Iribarren
- Department of Microbiology, Collaborator at Instituto de Investigación Sanitaria del Hospital Universitario Clínico San Carlos (IdISSC), 28040 Madrid, Spain; (A.R.-L.); (E.B.-M.); (A.D.-I.)
| | | | - José T. Ramos-Amador
- Department of Paediatrics, Universidad Complutense-Instituto de Investigación Sanitaria del Hospital Universitario Clínico San Carlos (IdISSC), 28040 Madrid, Spain;
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Jiménez D, Torres Arias M. Immunouniverse of SARS-CoV-2. Immunol Med 2022; 45:186-224. [PMID: 35502127 DOI: 10.1080/25785826.2022.2066251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Abstract
SARS-CoV-2 virus has become a global health problem that has caused millions of deaths worldwide. The infection can present with multiple clinical features ranging from asymptomatic or mildly symptomatic patients to patients with severe or critical illness that can even lead to death. Although the immune system plays an important role in pathogen control, SARS-CoV-2 can drive dysregulation of this response and trigger severe immunopathology. Exploring the mechanisms of the immune response involved in host defense against SARS-CoV-2 allows us to understand its immunopathogenesis and possibly detect features that can be used as potential therapies to eliminate the virus. The main objective of this review on SARS-CoV-2 is to highlight the interaction between the virus and the immune response. We explore the function and action of the immune system, the expression of molecules at the site of infection that cause hyperinflammation and hypercoagulation disorders, the factors leading to the development of pneumonia and subsequent severe acute respiratory distress syndrome which is the leading cause of death in patients with COVID-19.
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Affiliation(s)
- Dennis Jiménez
- Departamento de Ciencias de la Vida y Agricultura, Carrera de Ingeniería en Biotecnología, Universidad de las Fuerzas Armadas ESPE, Sangolquí, Pichincha, Ecuador
| | - Marbel Torres Arias
- Departamento de Ciencias de la Vida y Agricultura, Carrera de Ingeniería en Biotecnología, Universidad de las Fuerzas Armadas ESPE, Sangolquí, Pichincha, Ecuador.,Laboratorio de Inmunología y Virología, CENCINAT, GISAH, Universidad de las Fuerzas Armadas, Sangolquí, Pichincha, Ecuador
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30
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Bonura F, De Grazia S, Bonura C, Sanfilippo GL, Giammanco GM, Amodio E, Ferraro D. Differing kinetics of anti-spike protein IgGs and neutralizing antibodies against SARS-CoV-2 after Comirnaty (BNT162b2) immunization. J Appl Microbiol 2022; 132:3987-3994. [PMID: 35083832 DOI: 10.1111/jam.15463] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 01/17/2022] [Accepted: 01/20/2022] [Indexed: 11/29/2022]
Abstract
AIMS Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) infection has had a serious worldwide impact on human health. On December 2020, an immunization campaign with a COVID-19 mRNA vaccine (Comirnaty-BNT162b2 Pfizer-BioNTech) was started in Italy, first targeting healthcare workers (HCWs). This study aims to investigate the antibodies that are response against SARS-CoV-2 vaccine. METHODS AND RESULTS The kinetics and the persistence of both anti-S1/S2 IgGs and neutralizing antibodies (Nt-Abs) were investigated in 76 HCWs through a 4-month follow-up with multiple testing points starting at the first dose. Temporal analysis of SARS-CoV-2 Abs titre kinetics showed three different stages, with an initial slow growth in the anti-S1/S2 IgGs and Nt-Abs titres, corresponding to the first 4 weeks after the first dose of vaccine, followed by a second stage with peaks in titres, around 35 days after the first dose, and by a third stage (38 to 90-120 days after the first dose) showing a steady decrease in anti-S1/S2 IgGs while Nt-Abs are maintained at stable levels. Moreover, the levels of specific Nt-Abs to SARS-CoV-2 Spike protein are correlated to the anti-S1/S2 IgG titre (R-squared = 0.47; p < 0.001). CONCLUSIONS The levels of specific Nt-Abs to SARS-CoV-2 Spike protein are correlated to the anti-S1/S2 IgG titre, although Nt-Abs could maintain a more stable titre over the time despite declining IgG Abs titre. SIGNIFICANCE AND IMPACT This study highlights the kinetics and the persistence of Nt-Abs in HCWs vaccinated with Comirnaty (BNT162b2) Pfizer-BioNTech, and compared the Nt-Abs levels with anti-SARS-CoV-2 S1/S2 IgGs titres during a 4-month follow-up starting at the first dose of vaccine.
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Affiliation(s)
- Floriana Bonura
- Dipartimento di Promozione della Salute, Materno-Infantile, di Medicina Interna e Specialistica di Eccellenza "G. D'Alessandro" (PROSAMI), Università di Palermo, Palermo, Italy
| | - Simona De Grazia
- Dipartimento di Promozione della Salute, Materno-Infantile, di Medicina Interna e Specialistica di Eccellenza "G. D'Alessandro" (PROSAMI), Università di Palermo, Palermo, Italy
| | - Celestino Bonura
- Dipartimento di Promozione della Salute, Materno-Infantile, di Medicina Interna e Specialistica di Eccellenza "G. D'Alessandro" (PROSAMI), Università di Palermo, Palermo, Italy
| | - Giuseppa L Sanfilippo
- Dipartimento di Promozione della Salute, Materno-Infantile, di Medicina Interna e Specialistica di Eccellenza "G. D'Alessandro" (PROSAMI), Università di Palermo, Palermo, Italy
| | - Giovanni M Giammanco
- Dipartimento di Promozione della Salute, Materno-Infantile, di Medicina Interna e Specialistica di Eccellenza "G. D'Alessandro" (PROSAMI), Università di Palermo, Palermo, Italy
| | - Emanuele Amodio
- Dipartimento di Promozione della Salute, Materno-Infantile, di Medicina Interna e Specialistica di Eccellenza "G. D'Alessandro" (PROSAMI), Università di Palermo, Palermo, Italy
| | - Donatella Ferraro
- Dipartimento di Promozione della Salute, Materno-Infantile, di Medicina Interna e Specialistica di Eccellenza "G. D'Alessandro" (PROSAMI), Università di Palermo, Palermo, Italy
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31
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Geanes ES, LeMaster C, Fraley ER, Khanal S, McLennan R, Grundberg E, Selvarangan R, Bradley T. Cross-reactive antibodies elicited to conserved epitopes on SARS-CoV-2 spike protein after infection and vaccination. Sci Rep 2022; 12:6496. [PMID: 35444221 PMCID: PMC9019795 DOI: 10.1038/s41598-022-10230-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 04/05/2022] [Indexed: 12/13/2022] Open
Abstract
SARS-CoV-2 is a novel betacoronavirus that caused coronavirus disease 2019 and has resulted in millions of deaths worldwide. Novel coronavirus infections in humans have steadily become more common. Understanding antibody responses to SARS-CoV-2, and identifying conserved, cross-reactive epitopes among coronavirus strains could inform the design of vaccines and therapeutics with broad application. Here, we determined that individuals with previous SARS-CoV-2 infection or vaccinated with the Pfizer-BioNTech BNT162b2 vaccine produced antibody responses that cross-reacted with related betacoronaviruses. Moreover, we designed a peptide-conjugate vaccine with a conserved SARS-CoV-2 S2 spike epitope, immunized mice and determined cross-reactive antibody binding to SARS-CoV-2 and other related coronaviruses. This conserved spike epitope also shared sequence homology to proteins in commensal gut microbiota and could prime immune responses in humans. Thus, SARS-CoV-2 conserved epitopes elicit cross-reactive immune responses to both related coronaviruses and host bacteria that could serve as future targets for broad coronavirus therapeutics and vaccines.
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Affiliation(s)
- Eric S Geanes
- Genomic Medicine Center, Children's Mercy Research Institute, Kansas City, MO, USA
| | - Cas LeMaster
- Genomic Medicine Center, Children's Mercy Research Institute, Kansas City, MO, USA
| | - Elizabeth R Fraley
- Genomic Medicine Center, Children's Mercy Research Institute, Kansas City, MO, USA
| | - Santosh Khanal
- Genomic Medicine Center, Children's Mercy Research Institute, Kansas City, MO, USA
| | - Rebecca McLennan
- Genomic Medicine Center, Children's Mercy Research Institute, Kansas City, MO, USA
| | - Elin Grundberg
- Genomic Medicine Center, Children's Mercy Research Institute, Kansas City, MO, USA.,Department of Pediatrics, University of Missouri- Kansas City, Kansas City, MO, USA.,Department of Pediatrics, University of Kansas Medical Center, Kansas City, MO, USA.,Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS, USA
| | - Rangaraj Selvarangan
- Department of Pediatrics, University of Missouri- Kansas City, Kansas City, MO, USA.,Department of Pathology and Laboratory Medicine, Children's Mercy, Kansas City, MO, USA
| | - Todd Bradley
- Genomic Medicine Center, Children's Mercy Research Institute, Kansas City, MO, USA. .,Department of Pediatrics, University of Missouri- Kansas City, Kansas City, MO, USA. .,Department of Pediatrics, University of Kansas Medical Center, Kansas City, MO, USA. .,Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS, USA.
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32
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Slev PR. Severe Acute Respiratory Syndrome Coronavirus 2 Serology Testing - A Laboratory Primer. Clin Lab Med 2022; 42:1-13. [PMID: 35153044 PMCID: PMC8563364 DOI: 10.1016/j.cll.2021.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In 2019, an emerging coronavirus, SARS-COV-2, was first identified. In the months since, SARS-CoV-2 has become a global pandemic of unimaginable scale. In 2021, SARS-CoV-2 continues to be a huge public health burden and a dominating issue in health care. In addition, SARS-CoV-2 has placed a spotlight on laboratory medicine and its key role in infectious disease management. The SARS-CoV-2 antibody testing landscape is vast and consists of dozens of antibody tests that have received EUA. The laboratory is faced with choosing the right test, staying current with the rapidly evolving recommendations, and updating test information for clients and clinicians. This review addresses what we know about the humoral response in SARS-CoV-2 infection and how this knowledge translates into appropriate serology test choice, utility, and interpretation.
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Affiliation(s)
- Patricia R. Slev
- Immunology Division, ARUP Laboratories, 500 Chipeta Way, Salt Lake City, UT 80108, USA,Department of Pathology, University of Utah School of Medicine, Salt Lake City, UT, USA,ARUP Laboratories, 500 Chipeta Way, Salt Lake City, UT 80108, USA
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33
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Weinstein JB, Bates TA, Leier HC, McBride SK, Barklis E, Tafesse FG. A potent alpaca-derived nanobody that neutralizes SARS-CoV-2 variants. iScience 2022; 25:103960. [PMID: 35224467 PMCID: PMC8863326 DOI: 10.1016/j.isci.2022.103960] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 01/18/2022] [Accepted: 02/17/2022] [Indexed: 12/14/2022] Open
Abstract
The spike glycoprotein of SARS-CoV-2 engages with human ACE 2 to facilitate infection. Here, we describe an alpaca-derived heavy chain antibody fragment (VHH), saRBD-1, that disrupts this interaction by competitively binding to the spike protein receptor-binding domain. We further generated an engineered bivalent nanobody construct engineered by a flexible linker and a dimeric Fc conjugated nanobody construct. Both multivalent nanobodies blocked infection at picomolar concentrations and demonstrated no loss of potency against emerging variants of concern including Alpha (B.1.1.7), Beta (B.1.351), Gamma (P.1), Epsilon (B.1.427/429), and Delta (B.1.617.2). saRBD-1 tolerates elevated temperature, freeze-drying, and nebulization, making it an excellent candidate for further development into a therapeutic approach for COVID-19. SARS-CoV-2 variants effectively neutralized by saRBD-1 VHH with picomolar affinity saRBD-1 neutralization increases when expressed as a bivalent or Fc construct saRBD-1 binds SARS-CoV-2 RBD as a likely class 1 neutralizing antibody saRBD-1 retains binding, neutralization after heat and nebulization treatments
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Affiliation(s)
- Jules B Weinstein
- Department of Molecular Microbiology and Immunology, Oregon Health and Sciences University, 3181 SW Sam Jackson Park Road, Portland, OR, 97239-3098, USA
| | - Timothy A Bates
- Department of Molecular Microbiology and Immunology, Oregon Health and Sciences University, 3181 SW Sam Jackson Park Road, Portland, OR, 97239-3098, USA
| | - Hans C Leier
- Department of Molecular Microbiology and Immunology, Oregon Health and Sciences University, 3181 SW Sam Jackson Park Road, Portland, OR, 97239-3098, USA
| | - Savannah K McBride
- Department of Molecular Microbiology and Immunology, Oregon Health and Sciences University, 3181 SW Sam Jackson Park Road, Portland, OR, 97239-3098, USA
| | - Eric Barklis
- Department of Molecular Microbiology and Immunology, Oregon Health and Sciences University, 3181 SW Sam Jackson Park Road, Portland, OR, 97239-3098, USA
| | - Fikadu G Tafesse
- Department of Molecular Microbiology and Immunology, Oregon Health and Sciences University, 3181 SW Sam Jackson Park Road, Portland, OR, 97239-3098, USA
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34
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Zhang S, Xu K, Li C, Zhou L, Kong X, Peng J, Zhu F, Bao C, Jin H, Gao Q, Zhao X, Zhu L. Long-Term Kinetics of SARS-CoV-2 Antibodies and Impact of Inactivated Vaccine on SARS-CoV-2 Antibodies Based on a COVID-19 Patients Cohort. Front Immunol 2022; 13:829665. [PMID: 35154152 PMCID: PMC8828498 DOI: 10.3389/fimmu.2022.829665] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 01/10/2022] [Indexed: 12/14/2022] Open
Abstract
Background Understanding the long-term kinetic characteristics of SARS-CoV-2 antibodies and the impact of inactivated vaccines on SARS-CoV-2 antibodies in convalescent patients can provide information for developing and improving vaccination strategies in such populations. Methods In this cohort, 402 convalescent patients who tested positive for SARS-CoV-2 by RT-PCR from 1 January to 22 June 2020 in Jiangsu, China, were enrolled. The epidemiological data included demographics, symptom onset, and vaccination history. Blood samples were collected and tested for antibody levels of specific IgG, IgM, RBD-IgG, S-IgG, and neutralizing antibodies using a the commercial magnetic chemiluminescence enzyme immunoassay. Results The median follow-up time after symptom onset was 15.6 months (IQR, 14.6 to 15.8). Of the 402 convalescent patients, 44 (13.84%) received an inactivated vaccine against COVID-19. A total of 255 (80.19%) patients were IgG-positive and 65 (20.44%) were IgM-positive. The neutralizing antibody was 83.02%. Compared with non-vaccinated individuals, the IgG antibody levels in vaccinated people were higher (P=0.007). Similarly, antibody levels for RBD-IgG, S-IgG, and neutralizing antibodies were all highly increased in vaccinated individuals (P<0.05). IgG levels were significantly higher after vaccination than before vaccination in the same population. IgG levels in those who received ‘single dose and ≥14d’ were similar to those with two doses (P>0.05). Similar conclusions were drawn for RBD-IgG and the neutralizing antibody. Conclusion 15.6 months after symptom onset, the majority of participants remained positive for serum-specific IgG, RBD-IgG, S-IgG, and neutralizing antibodies. For convalescent patients, a single dose of inactivated vaccine against COVID-19 can further boost antibody titres.
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Affiliation(s)
- Shihan Zhang
- Department of Epidemiology and Health Statistics, School of Public Health, Southeast University, Nanjing, China.,Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, China
| | - Ke Xu
- Department of Acute Infectious Disease Control and Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
| | - Chuchu Li
- Department of Acute Infectious Disease Control and Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
| | - Lu Zhou
- Department of Acute Infectious Disease Control and Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
| | - Xiaoxiao Kong
- Department of Acute Infectious Disease Control and Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
| | - Jiefu Peng
- Department of Acute Infectious Disease Control and Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
| | - Fengcai Zhu
- Department of Acute Infectious Disease Control and Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China.,National Health Commission (NHC) Key Laboratory of Enteric Pathogenic Microbiology, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China.,Key Laboratory of Infectious Diseases, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Changjun Bao
- Department of Acute Infectious Disease Control and Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
| | - Hui Jin
- Department of Epidemiology and Health Statistics, School of Public Health, Southeast University, Nanjing, China.,Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, China
| | - Qiang Gao
- Department of Acute Infectious Disease Control and Prevention, Huai'an Center for Disease Control and Prevention, Huaian, China
| | - Xing Zhao
- Department of Acute Infectious Disease Control and Prevention, Lianyungang Center for Disease Control and Prevention, Lianyungang, China
| | - Liguo Zhu
- Department of Acute Infectious Disease Control and Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China.,National Health Commission (NHC) Key Laboratory of Enteric Pathogenic Microbiology, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China.,Key Laboratory of Infectious Diseases, School of Public Health, Nanjing Medical University, Nanjing, China.,Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Jiangsu Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University, Nanjing, China
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35
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Pradenas E, Trinité B, Urrea V, Marfil S, Tarrés-Freixas F, Ortiz R, Rovirosa C, Rodon J, Vergara-Alert J, Segalés J, Guallar V, Valencia A, Izquierdo-Useros N, Noguera-Julian M, Carrillo J, Paredes R, Mateu L, Chamorro A, Toledo R, Massanella M, Clotet B, Blanco J. Clinical course impacts early kinetics,magnitude, and amplitude of SARS-CoV-2 neutralizing antibodies beyond 1 year after infection. Cell Rep Med 2022; 3:100523. [PMID: 35233547 PMCID: PMC8784437 DOI: 10.1016/j.xcrm.2022.100523] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 11/12/2021] [Accepted: 01/17/2022] [Indexed: 12/12/2022]
Abstract
To understand the determinants of long-term immune responses to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and the concurrent impact of vaccination and emerging variants, we follow a prospective cohort of 332 patients with coronavirus disease 2019 (COVID-19) over more than a year after symptom onset. We evaluate plasma-neutralizing activity using HIV-based pseudoviruses expressing the spike of different SARS-CoV-2 variants and analyze them longitudinally using mixed-effects models. Long-term neutralizing activity is stable beyond 1 year after infection in mild/asymptomatic and hospitalized participants. However, longitudinal models suggest that hospitalized individuals generate both short- and long-lived memory B cells, while the responses of non-hospitalized individuals are dominated by long-lived B cells. In both groups, vaccination boosts responses to natural infection. Long-term (>300 days from infection) responses in unvaccinated participants show a reduced efficacy against beta, but not alpha nor delta, variants. Multivariate analysis identifies the severity of primary infection as an independent determinant of higher magnitude and lower relative cross-neutralization activity of long-term neutralizing responses. Long-term persistence (>12 months) of neutralizing antibodies against SARS-CoV-2 Severity of infection determines the magnitude and quality of neutralizing response Vaccination boosts neutralizing response to natural infection
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Affiliation(s)
- Edwards Pradenas
- IrsiCaixa AIDS Research Institute, Germans Trias i Pujol Research Institute (IGTP), Can Ruti Campus, UAB, Hospital Germans Trias i Pujol, Ctra. de Canyet s/n. 2a Planta Maternal, 08916 Badalona, Catalonia, Spain
| | - Benjamin Trinité
- IrsiCaixa AIDS Research Institute, Germans Trias i Pujol Research Institute (IGTP), Can Ruti Campus, UAB, Hospital Germans Trias i Pujol, Ctra. de Canyet s/n. 2a Planta Maternal, 08916 Badalona, Catalonia, Spain
| | - Víctor Urrea
- IrsiCaixa AIDS Research Institute, Germans Trias i Pujol Research Institute (IGTP), Can Ruti Campus, UAB, Hospital Germans Trias i Pujol, Ctra. de Canyet s/n. 2a Planta Maternal, 08916 Badalona, Catalonia, Spain
| | - Silvia Marfil
- IrsiCaixa AIDS Research Institute, Germans Trias i Pujol Research Institute (IGTP), Can Ruti Campus, UAB, Hospital Germans Trias i Pujol, Ctra. de Canyet s/n. 2a Planta Maternal, 08916 Badalona, Catalonia, Spain
| | - Ferran Tarrés-Freixas
- IrsiCaixa AIDS Research Institute, Germans Trias i Pujol Research Institute (IGTP), Can Ruti Campus, UAB, Hospital Germans Trias i Pujol, Ctra. de Canyet s/n. 2a Planta Maternal, 08916 Badalona, Catalonia, Spain
| | - Raquel Ortiz
- IrsiCaixa AIDS Research Institute, Germans Trias i Pujol Research Institute (IGTP), Can Ruti Campus, UAB, Hospital Germans Trias i Pujol, Ctra. de Canyet s/n. 2a Planta Maternal, 08916 Badalona, Catalonia, Spain
| | - Carla Rovirosa
- IrsiCaixa AIDS Research Institute, Germans Trias i Pujol Research Institute (IGTP), Can Ruti Campus, UAB, Hospital Germans Trias i Pujol, Ctra. de Canyet s/n. 2a Planta Maternal, 08916 Badalona, Catalonia, Spain
| | - Jordi Rodon
- IRTA Centre de Recerca en Sanitat Animal (CReSA, IRTA-UAB), Campus de la UAB, 08193 Bellaterra, Catalonia, Spain
| | - Júlia Vergara-Alert
- IRTA Centre de Recerca en Sanitat Animal (CReSA, IRTA-UAB), Campus de la UAB, 08193 Bellaterra, Catalonia, Spain
| | - Joaquim Segalés
- UAB, Centre de Recerca en Sanitat Animal (IRTA-UAB), Campus de la UAB, 08193 Bellaterra, Catalonia, Spain.,Departament de Sanitat i Anatomia Animals, Facultat de Veterinària, UAB, 08193, Bellaterra, Catalonia, Spain
| | - Victor Guallar
- Barcelona Supercomputing Center, 08034 Barcelona, Catalonia, Spain.,Catalan Institution for Research and Advanced Studies (ICREA), 08010 Barcelona, Catalonia, Spain
| | - Alfonso Valencia
- Barcelona Supercomputing Center, 08034 Barcelona, Catalonia, Spain.,Catalan Institution for Research and Advanced Studies (ICREA), 08010 Barcelona, Catalonia, Spain
| | - Nuria Izquierdo-Useros
- IrsiCaixa AIDS Research Institute, Germans Trias i Pujol Research Institute (IGTP), Can Ruti Campus, UAB, Hospital Germans Trias i Pujol, Ctra. de Canyet s/n. 2a Planta Maternal, 08916 Badalona, Catalonia, Spain
| | - Marc Noguera-Julian
- IrsiCaixa AIDS Research Institute, Germans Trias i Pujol Research Institute (IGTP), Can Ruti Campus, UAB, Hospital Germans Trias i Pujol, Ctra. de Canyet s/n. 2a Planta Maternal, 08916 Badalona, Catalonia, Spain
| | - Jorge Carrillo
- IrsiCaixa AIDS Research Institute, Germans Trias i Pujol Research Institute (IGTP), Can Ruti Campus, UAB, Hospital Germans Trias i Pujol, Ctra. de Canyet s/n. 2a Planta Maternal, 08916 Badalona, Catalonia, Spain
| | - Roger Paredes
- IrsiCaixa AIDS Research Institute, Germans Trias i Pujol Research Institute (IGTP), Can Ruti Campus, UAB, Hospital Germans Trias i Pujol, Ctra. de Canyet s/n. 2a Planta Maternal, 08916 Badalona, Catalonia, Spain.,Infectious Diseases Department, Fight against AIDS Foundation (FLS), Germans Trias i Pujol Hospital, 08916 Badalona, Catalonia, Spain
| | - Lourdes Mateu
- Infectious Diseases Department, Fight against AIDS Foundation (FLS), Germans Trias i Pujol Hospital, 08916 Badalona, Catalonia, Spain
| | - Anna Chamorro
- Infectious Diseases Department, Fight against AIDS Foundation (FLS), Germans Trias i Pujol Hospital, 08916 Badalona, Catalonia, Spain
| | - Ruth Toledo
- Infectious Diseases Department, Fight against AIDS Foundation (FLS), Germans Trias i Pujol Hospital, 08916 Badalona, Catalonia, Spain
| | - Marta Massanella
- IrsiCaixa AIDS Research Institute, Germans Trias i Pujol Research Institute (IGTP), Can Ruti Campus, UAB, Hospital Germans Trias i Pujol, Ctra. de Canyet s/n. 2a Planta Maternal, 08916 Badalona, Catalonia, Spain
| | - Bonaventura Clotet
- IrsiCaixa AIDS Research Institute, Germans Trias i Pujol Research Institute (IGTP), Can Ruti Campus, UAB, Hospital Germans Trias i Pujol, Ctra. de Canyet s/n. 2a Planta Maternal, 08916 Badalona, Catalonia, Spain.,Infectious Diseases Department, Fight against AIDS Foundation (FLS), Germans Trias i Pujol Hospital, 08916 Badalona, Catalonia, Spain.,University of Vic-Central University of Catalonia (UVic-UCC), 08500 Vic, Catalonia, Spain
| | - Julià Blanco
- IrsiCaixa AIDS Research Institute, Germans Trias i Pujol Research Institute (IGTP), Can Ruti Campus, UAB, Hospital Germans Trias i Pujol, Ctra. de Canyet s/n. 2a Planta Maternal, 08916 Badalona, Catalonia, Spain.,University of Vic-Central University of Catalonia (UVic-UCC), 08500 Vic, Catalonia, Spain
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Chua PEY, Gwee SXW, Wang MX, Gui H, Pang J. Severe Acute Respiratory Syndrome Coronavirus 2 Diagnostic Tests for Border Screening During the Very Early Phase of Coronavirus Disease 2019 Pandemic: A Systematic Review and Meta-Analysis. Front Med (Lausanne) 2022; 9:748522. [PMID: 35237618 PMCID: PMC8882616 DOI: 10.3389/fmed.2022.748522] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 01/06/2022] [Indexed: 12/23/2022] Open
Abstract
Diagnosis of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) during border screening among returning residents and prioritized travelers during the early phase of a pandemic can reduce the risk of importation and transmission in the community. This study aimed to compare the accuracy of various SARS-CoV-2 diagnostics and assess their potential utility as border screening for infection and immunity. Systematic literature searches were conducted in six electronic databases for studies reporting SARS-CoV-2 diagnostics (up to April 30, 2020). Meta-analysis and methodological assessment were conducted for all included studies. The performance of the diagnostic tests was evaluated with pooled sensitivity, specificity, and their respective 95% confidence intervals. A total of 5,416 unique studies were identified and 95 studies (at least 29,785 patients/samples) were included. Nucleic acid amplification tests (NAAT) consistently outperformed all other diagnostic methods regardless of the selected viral genes with a pooled sensitivity of 98% and a pooled specificity of 99%. Point-of-care (POC) serology tests had moderately high pooled sensitivity (69%), albeit lower than laboratory-based serology tests (89%), but both had high pooled specificity (96-98%). Serology tests were more sensitive for sampling collected at ≥ 7 days than ≤ 7 days from the disease symptoms onset. POC NAAT and POC serology tests are suitable for detecting infection and immunity against the virus, respectively as border screening. Independent validation in each country is highly encouraged with the preferred choice of diagnostic tool/s.
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Affiliation(s)
- Pearleen Ee Yong Chua
- Saw Swee Hock School of Public Health, National University Health System, National University of Singapore, Singapore, Singapore
- Centre for Infectious Disease Epidemiology and Research, National University of Singapore, Singapore, Singapore
| | - Sylvia Xiao Wei Gwee
- Saw Swee Hock School of Public Health, National University Health System, National University of Singapore, Singapore, Singapore
- Centre for Infectious Disease Epidemiology and Research, National University of Singapore, Singapore, Singapore
| | - Min Xian Wang
- Saw Swee Hock School of Public Health, National University Health System, National University of Singapore, Singapore, Singapore
- Centre for Infectious Disease Epidemiology and Research, National University of Singapore, Singapore, Singapore
| | - Hao Gui
- Saw Swee Hock School of Public Health, National University Health System, National University of Singapore, Singapore, Singapore
- Centre for Infectious Disease Epidemiology and Research, National University of Singapore, Singapore, Singapore
| | - Junxiong Pang
- Saw Swee Hock School of Public Health, National University Health System, National University of Singapore, Singapore, Singapore
- Centre for Infectious Disease Epidemiology and Research, National University of Singapore, Singapore, Singapore
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37
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Scussel R, Feuser PE, Luiz GP, Galvani NC, Fagundes MÍ, Gonçalves Dal-Bó A, Hermes de Araújo PH, Coelho EA, Chávez-Olórtegui C, Machado-de-Ávila RA. Peptide-Integrated Superparamagnetic Nanoparticles for the Identification of Epitopes from SARS-CoV-2 Spike and Nucleocapsid Proteins. ACS APPLIED NANO MATERIALS 2022; 5:642-653. [PMID: 35098045 PMCID: PMC8790823 DOI: 10.1021/acsanm.1c03399] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 01/05/2022] [Indexed: 05/04/2023]
Abstract
The COVID-19 pandemic, caused by the fast transmission and spread of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is currently considered a serious health problem, requiring an effective strategy to contain SARS-CoV-2 dissemination. For this purpose, epitopes of the SARS-CoV-2 spike (S) and sucleocapsid (N) proteins were identified by bioinformatics tools, and peptides that mimic these epitopes were chemically synthesized and then conjugated to superparamagnetic nanoparticles (SPMNPs). Three peptides from S protein and three from N protein were used as antigens in a conventional enzyme-linked immunosorbent assay (ELISA) against serum samples from COVID-19-positive patients, or from healthy donors, collected before the pandemic. Three peptides were effective as antigens in conventional peptide-based ELISA, achieving 100% sensitivity and specificity, with high accuracy. The best-performing peptides, p2pS, p1pN, and p3pN, were associated with superparamagnetic nanoparticles (SPMNPs) and were used to perform nanomagnetic peptide-based ELISA. The p2pS-SPMNP conjugate presented 100% sensitivity and specificity and excellent accuracy (area under the curve (AUC) = 1.0). However, p1pN and p3pN peptides, when conjugated to SPMNPs, did not preserve the capacity to differentiate positive sera from negative sera in all tested samples, yet both presented sensitivity and specificity above 80% and high accuracy, AUC > 0.9. We obtained three peptides as advantageous antigens for serodiagnosis. These peptides, especially p2pS, showed promising results in a nanomagnetic peptide-based ELISA and may be suitable as a precoated antigen for commercial purposes, which would accelerate the diagnosis process.
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Affiliation(s)
- Rahisa Scussel
- Programa
de Pós-Graduação em Ciências da Saúde, Universidade do Extremo Sul Catarinense, Universitário, 88806-000 Criciúma, Santa Catarina, Brazil
| | - Paulo Emilio Feuser
- Programa
de Pós-Graduação em Ciências da Saúde, Universidade do Extremo Sul Catarinense, Universitário, 88806-000 Criciúma, Santa Catarina, Brazil
- Programa
de Pós-Graduação em Engenharia Química,
Department of Engenharia Química, Universidade Federal de Santa Catarina, Cidade Universitária, Trindade, 88010-970 Florianópolis, Santa Catarina, Brazil
| | - Gabriel Paulino Luiz
- Programa
de Pós-Graduação em Ciências da Saúde, Universidade do Extremo Sul Catarinense, Universitário, 88806-000 Criciúma, Santa Catarina, Brazil
| | - Nathalia Coral Galvani
- Programa
de Pós-Graduação em Ciências da Saúde, Universidade do Extremo Sul Catarinense, Universitário, 88806-000 Criciúma, Santa Catarina, Brazil
- Programa
de Pós-Graduação em Ciências da Saúde:
Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, 30130-100 Belo
Horizonte, Minas Gerais, Brazil
| | - Mírian Ívens Fagundes
- Programa
de Pós-Graduação em Ciências da Saúde, Universidade do Extremo Sul Catarinense, Universitário, 88806-000 Criciúma, Santa Catarina, Brazil
| | - Alexandre Gonçalves Dal-Bó
- Programa
de Pós-Graduação em Ciência e Engenharia
de Materiais, Universidade do Extremo Sul
Catarinense, Sangão, 88806-000 Criciúma, Santa Catarina, Brazil
| | - Pedro Henrique Hermes de Araújo
- Programa
de Pós-Graduação em Engenharia Química,
Department of Engenharia Química, Universidade Federal de Santa Catarina, Cidade Universitária, Trindade, 88010-970 Florianópolis, Santa Catarina, Brazil
| | - Eduardo Antônio
Ferraz Coelho
- Programa
de Pós-Graduação em Ciências da Saúde:
Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, 30130-100 Belo
Horizonte, Minas Gerais, Brazil
| | - Carlos Chávez-Olórtegui
- Programa
de Pós-Graduação em Bioquímica e Imunologia,
Departamento de Bioquímica e Imunologia, Instituto de Ciências
Biológicas, Universidade Federal
de Minas Gerais, Pampulha, 31270-901 Belo Horizonte, Minas
Gerais, Brazil
| | - Ricardo Andrez Machado-de-Ávila
- Programa
de Pós-Graduação em Ciências da Saúde, Universidade do Extremo Sul Catarinense, Universitário, 88806-000 Criciúma, Santa Catarina, Brazil
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Oliveira-Silva J, Reis T, Lopes C, Batista-Silva R, Ribeiro R, Marques G, Pacheco V, Rodrigues T, Afonso A, Pinheiro V, Araújo L, Rodrigues F, Antunes I. Humoral response to the SARS-CoV-2 BNT162b2 mRNA vaccine: Real-world data from a large cohort of healthcare workers. Vaccine 2022; 40:650-655. [PMID: 34952755 PMCID: PMC8664659 DOI: 10.1016/j.vaccine.2021.12.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/05/2021] [Accepted: 12/06/2021] [Indexed: 12/19/2022]
Abstract
BACKGROUND The SARS-CoV-2 pandemic was responsible for the death of millions of people around the world, which accelerated the study of vaccines. The BNT162b2 mRNA COVID-19 is a messenger RNA vaccine that encodes the spike protein of the virus. However, the duration of the protection conferred by this vaccine and factors associated with immune responses require validation in large cohorts. METHODS Here, we present data of humoral immune response to vaccination in4264 healthcare workers, tested before (T0) and 15 and 90 days (T1 and T2, respectively) following vaccination.Peripheral blood was collected for immunological analysis using the Quant SARS-CoV-2 IgG II Chemiluminescent Microparticle Immunoassay (CMIA) to determine anti-spike IgG, receptor binding domain (RBD), S1 subunit of SARS-CoV-2. FINDINGS At T0, 96·8% (n = 4129) of participants had IgG antibodies non-reactive to anti-SARS-CoV-2. Fifteen days after completing the vaccination, the IgG overall median titer was significantly elevated (21·7x103AU/mL). Both for uni- and multivariate logistic regression analyses women presented higher antibody levels than men, independent of age. Titers were significantly altered among age groups, decreasing by each increase in 10-year of age. At 3 months after completing the vaccination, anti-SARS-CoV-2 IgG titers were 6·3-fold diminished. This real-world post-vaccination data confirmed production of a frequent and elevated anti-SARS-CoV-2 IgG titers, associated with high protection rates. Females and younger participants had higher titer 15 days after vaccination, and despite the significant reduction from 15-to-90 days, those with higher pre-vaccination titers maintained higher levels throughout the remaining timepoints. INTERPRETATION These findings support the need to track humoral immunity kinetics to uncover viral susceptibility and eventually implement re-vaccination, particularly in groups prone to lower humoral immune response. FUNDING No external funding was received to conduct this study.
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Affiliation(s)
- Joana Oliveira-Silva
- Department of Occupational Heath, Centro Hospitalar e Universitário de Coimbra, Praceta Professor Mota Pinto, 3004-561 Coimbra, Portugal.
| | - Teresa Reis
- Department of Clinical Pathology, Centro Hospitalar e Universitário de Coimbra, Praceta Professor Mota Pinto, 3004-561 Coimbra, Portugal
| | - Cristiana Lopes
- Department of Clinical Pathology, Centro Hospitalar e Universitário de Coimbra, Praceta Professor Mota Pinto, 3004-561 Coimbra, Portugal
| | - Ricardo Batista-Silva
- Department of Occupational Heath, Centro Hospitalar e Universitário de Coimbra, Praceta Professor Mota Pinto, 3004-561 Coimbra, Portugal
| | - Ricardo Ribeiro
- Department of Clinical Pathology, Centro Hospitalar e Universitário de Coimbra, Praceta Professor Mota Pinto, 3004-561 Coimbra, Portugal
| | - Gilberto Marques
- Department of Clinical Pathology, Centro Hospitalar e Universitário de Coimbra, Praceta Professor Mota Pinto, 3004-561 Coimbra, Portugal
| | - Vânia Pacheco
- Department of Occupational Heath, Centro Hospitalar e Universitário de Coimbra, Praceta Professor Mota Pinto, 3004-561 Coimbra, Portugal
| | - Tiago Rodrigues
- Department of Occupational Heath, Centro Hospitalar e Universitário de Coimbra, Praceta Professor Mota Pinto, 3004-561 Coimbra, Portugal
| | - Alexandre Afonso
- Department of Occupational Heath, Centro Hospitalar e Universitário de Coimbra, Praceta Professor Mota Pinto, 3004-561 Coimbra, Portugal
| | - Vítor Pinheiro
- Department of Occupational Heath, Centro Hospitalar e Universitário de Coimbra, Praceta Professor Mota Pinto, 3004-561 Coimbra, Portugal
| | - Lucília Araújo
- Department of Clinical Pathology, Centro Hospitalar e Universitário de Coimbra, Praceta Professor Mota Pinto, 3004-561 Coimbra, Portugal
| | - Fernando Rodrigues
- Department of Clinical Pathology, Centro Hospitalar e Universitário de Coimbra, Praceta Professor Mota Pinto, 3004-561 Coimbra, Portugal
| | - Isabel Antunes
- Department of Occupational Heath, Centro Hospitalar e Universitário de Coimbra, Praceta Professor Mota Pinto, 3004-561 Coimbra, Portugal
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Kraynyak KA, Blackwood E, Agnes J, Tebas P, Giffear M, Amante D, Reuschel EL, Purwar M, Christensen-Quick A, Liu N, Andrade VM, Diehl MC, Wani S, Lupicka M, Sylvester A, Morrow MP, Pezzoli P, McMullan T, Kulkarni AJ, Zaidi FI, Frase D, Liaw K, Smith TRF, Ramos SJ, Ervin J, Adams M, Lee J, Dallas M, Brown AS, Shea JE, Kim JJ, Weiner DB, Broderick KE, Humeau LM, Boyer JD, Mammen MP. SARS-CoV-2 DNA Vaccine INO-4800 Induces Durable Immune Responses Capable of Being Boosted in a Phase 1 Open-Label Trial. J Infect Dis 2022; 225:1923-1932. [PMID: 35079784 PMCID: PMC8807286 DOI: 10.1093/infdis/jiac016] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 01/24/2022] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Additional SARS-CoV-2 vaccines that are safe and effective as primary vaccines and boosters remain urgently needed to combat the COVID-19 pandemic. We describe the safety and durability of the immune responses following two primary doses and a homologous booster dose of an investigational DNA vaccine (INO-4800) targeting the full-length spike antigen.
Methods
Three dosage strengths of INO-4800 (0.5 mg, 1.0 mg, and 2.0 mg) were evaluated in 120 age-stratified healthy adults. Intradermal injection of INO-4800 followed by electroporation at 0 and 4 weeks preceded an optional booster 6-10.5 months after the second dose.
Results
INO-4800 appeared well tolerated, with no treatment-related serious adverse events. Most adverse events were mild and did not increase in frequency with age and subsequent dosing. A durable antibody response was observed 6 months following the second dose; a homologous booster dose significantly increased immune responses. Cytokine producing T cells and activated CD8+ T cells with lytic potential were significantly increased in the 2.0 mg dose group.
Conclusion
INO-4800 was well tolerated in a 2-dose primary series and as a homologous booster in all adults, including the elderly. These results support further development of INO-4800 for use as a primary vaccine and as a booster.
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Affiliation(s)
| | | | - Joseph Agnes
- Inovio Pharmaceuticals, Plymouth Meeting, PA, USA
| | - Pablo Tebas
- Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Mary Giffear
- Inovio Pharmaceuticals, Plymouth Meeting, PA, USA
| | - Dinah Amante
- Inovio Pharmaceuticals, Plymouth Meeting, PA, USA
| | - Emma L Reuschel
- Vaccine and Immunotherapy Center, Wistar Institute, Philadelphia, PA, USA
| | - Mansi Purwar
- Vaccine and Immunotherapy Center, Wistar Institute, Philadelphia, PA, USA
| | | | - Neiman Liu
- Inovio Pharmaceuticals, Plymouth Meeting, PA, USA
| | | | | | - Snehal Wani
- Inovio Pharmaceuticals, Plymouth Meeting, PA, USA
| | | | | | | | | | | | | | - Faraz I Zaidi
- Vaccine and Immunotherapy Center, Wistar Institute, Philadelphia, PA, USA
| | - Drew Frase
- Vaccine and Immunotherapy Center, Wistar Institute, Philadelphia, PA, USA
| | - Kevin Liaw
- Vaccine and Immunotherapy Center, Wistar Institute, Philadelphia, PA, USA
| | | | | | - John Ervin
- Alliance for Multispecialty Research, Kansas City, MO, USA
| | - Mark Adams
- Alliance for Multispecialty Research, Lexington, KY, USA
| | - Jessica Lee
- Inovio Pharmaceuticals, Plymouth Meeting, PA, USA
| | | | | | | | - J Joseph Kim
- Inovio Pharmaceuticals, Plymouth Meeting, PA, USA
| | - David B Weiner
- Vaccine and Immunotherapy Center, Wistar Institute, Philadelphia, PA, USA
| | | | | | - Jean D Boyer
- Inovio Pharmaceuticals, Plymouth Meeting, PA, USA
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40
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Monitoring of SARS-CoV-2 Specific Antibodies after Vaccination. Vaccines (Basel) 2022; 10:vaccines10020154. [PMID: 35214613 PMCID: PMC8880181 DOI: 10.3390/vaccines10020154] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 01/13/2022] [Indexed: 12/29/2022] Open
Abstract
Vaccination is considered the most important measure to control the COVID-19 pandemic. Extensive follow-up studies with distinct vaccines and populations are able to promote robust and reliable data to better understand the effectiveness of this pharmacologic strategy. In this sense, we present data regarding binding and neutralizing (achieved by surrogate ELISA assay) antibodies throughout time, from vaccinated and previously infected (PI) health care workers (HCW) in Portugal. We analyzed serum samples of 132 HCW, who were vaccinated and with previous SARS-CoV-2 infection. Samples were collected before vaccination (baseline, M1), at second dose vaccine uptake (M2), and 25–70 days (M3) and 150–210 days (M4) after the second dose for vaccinated individuals. The IgG (anti-RBD/S) antibody geometric mean titers found on vaccinated HCW at M2 (GM = 116.1 BAU/mL; CI: 92.3–146.1) were significantly higher than those found on PI HCW at recruitment (M1) (GM = 35.9 BAU/mL; CI:15.4–83.4), and the neutralizing antibodies (nAb) were similar between these groups, of 93.2 UI/mL (95% CI 73.2–118.5) vs. 84.1 UI/mL (95% CI 40.4–155.9), respectively. We detected around 10-fold higher IgG (anti-RBD/S) antibodies titers in M3 when compared with M2, with a slight but significant decrease in titers from 36 days after the second dose vaccine uptake. The increase of nAb titers was correlated with IgG (anti-RBD/S) antibodies titers; however, in contrast to IgG (anti-RBD/S) antibodies titers, we did not detect a decrease in the nAb titer 36 days after a second vaccine dose uptake. At M4, a decrease of 8-fold in binding IgG (anti-RBD/S) and nAb was observed. No significant differences in antibody titers were observed by sex, age or chronic diseases. Our results suggest that IgG (anti-RBD/S) antibodies titers and nAb titers could be correlated, but an ongoing follow up of the cohort is required to better understand this correlation, and the duration of the immune response.
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Jochum S, Kirste I, Hortsch S, Grunert VP, Legault H, Eichenlaub U, Kashlan B, Pajon R. Clinical Utility of Elecsys Anti-SARS-CoV-2 S Assay in COVID-19 Vaccination: An Exploratory Analysis of the mRNA-1273 Phase 1 Trial. Front Immunol 2022; 12:798117. [PMID: 35126362 PMCID: PMC8807632 DOI: 10.3389/fimmu.2021.798117] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 12/23/2021] [Indexed: 12/16/2022] Open
Abstract
Background The ability to quantify an immune response after vaccination against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is essential. This study assessed the clinical utility of the quantitative Roche Elecsys® Anti-SARS-CoV-2 S assay (ACOV2S) using samples from the 2019-nCoV vaccine (mRNA-1273) phase 1 trial (NCT04283461). Methods Samples from 30 healthy participants, aged 18–55 years, who received two injections with mRNA-1273 at a dose of 25 μg (n=15) or 100 μg (n=15), were collected at Days 1 (first vaccination), 15, 29 (second vaccination), 43 and 57. ACOV2S results (shown in U/mL – equivalent to BAU/mL per the first WHO international standard) were compared with results from ELISAs specific to antibodies against the Spike protein (S-2P) and the receptor binding domain (RBD) as well as neutralization tests including nanoluciferase (nLUC80), live-virus (PRNT80), and a pseudovirus neutralizing antibody assay (PsVNA50). Results RBD-specific antibodies were already detectable by ACOV2S at the first time point of assessment (d15 after first vaccination), with seroconversion before in all but two participants (25 μg dose group); all had seroconverted by Day 29. Across all post-baseline visits, geometric mean concentration of antibody levels was 3.27–7.48-fold higher in the 100 μg compared with the 25 μg dose group. ACOV2S measurements were highly correlated with those from RBD ELISA (Pearson’s r=0.938; p<0.0001) and S-2P ELISA (r=0.918; p<0.0001). For both ELISAs, heterogeneous baseline results and smaller increases in antibody levels following the second vs first vaccination compared with ACOV2S were observed. ACOV2S showed absence of any baseline noise indicating high specificity detecting vaccine-induced antibody response. Moderate–strong correlations were observed between ACOV2S and neutralization tests (nLUC80 r=0.933; PsVNA50, r=0.771; PRNT80, r=0.672; all p ≤ 0.0001). Conclusion The Elecsys Anti-SARS-CoV-2 S assay (ACOV2S) can be regarded as a highly valuable method to assess and quantify the presence of RBD-directed antibodies against SARS-CoV-2 following vaccination and may indicate the presence of neutralizing antibodies. As a fully automated and standardized method, ACOV2S could qualify as the method of choice for consistent quantification of vaccine-induced humoral response.
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Affiliation(s)
- Simon Jochum
- Research and Development Immunoassays, Roche Diagnostics GmbH, Penzberg, Germany
- *Correspondence: Simon Jochum, ; Rolando Pajon,
| | - Imke Kirste
- Clinical Development & Medical Affairs, Roche Diagnostics Operations, Indianapolis, IN, United States
| | - Sayuri Hortsch
- Biostatistics and Data Science, Roche Diagnostics GmbH, Penzberg, Germany
| | - Veit Peter Grunert
- Biostatistics and Data Science, Roche Diagnostics GmbH, Penzberg, Germany
| | - Holly Legault
- Clinical Biomarkers, Moderna, Cambridge, MA, United States
| | - Udo Eichenlaub
- Clinical Development & Medical Affairs, Roche Diagnostics Operations, Indianapolis, IN, United States
| | - Basel Kashlan
- Lab Operations, PPD, part of Thermo Fisher Scientific, Highland Heights, KY, United States
| | - Rolando Pajon
- Clinical Biomarkers, Moderna, Cambridge, MA, United States
- *Correspondence: Simon Jochum, ; Rolando Pajon,
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Yuan L, Gao XD, Xia Y. Optimising the oil phases of aluminium hydrogel-stabilised emulsions for stable, safe and efficient vaccine adjuvant. Front Chem Sci Eng 2022; 16:973-984. [PMID: 35070473 PMCID: PMC8762986 DOI: 10.1007/s11705-021-2123-1] [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: 07/16/2021] [Accepted: 09/23/2021] [Indexed: 11/29/2022]
Abstract
To increase antibody secretion and dose sparing, squalene-in-water aluminium hydrogel (alum)-stabilised emulsions (ASEs) have been developed, which offer increased surface areas and cellular interactions for higher antigen loading and enhanced immune responses. Nevertheless, the squalene (oil) in previous attempts suffered from limited oxidation resistance, thus, safety and stability were compromised. From a clinical translational perspective, it is imperative to screen the optimal oils for enhanced emulsion adjuvants. Here, because of the varying oleic to linoleic acid ratio, soybean oil, peanut oil, and olive oil were utilised as oil phases in the preparation of aluminium hydrogel-stabilised squalene-in-water emulsions, which were then screened for their stability and immunogenicity. Additionally, the underlying mechanisms of oil phases and emulsion stability were unravelled, which showed that a higher oleic to linoleic acid ratio increased anti-oxidative capabilities but reduced the long-term storage stability owing to the relatively low zeta potential of the prepared droplets. As a result, compared with squalene-in-water ASEs, soybean-in-water ASEs exhibited comparable immune responses and enhanced stability. By optimising the oil phase of the emulsion adjuvants, this work may offer an alternative strategy for safe, stable, and effective emulsion adjuvants.
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Affiliation(s)
- Lili Yuan
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122 China
| | - Xiao-Dong Gao
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122 China
| | - Yufei Xia
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
- Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing, 100190 China
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ELISA-Based Analysis Reveals an Anti-SARS-CoV-2 Protein Immune Response Profile Associated with Disease Severity. J Clin Med 2022; 11:jcm11020405. [PMID: 35054099 PMCID: PMC8781066 DOI: 10.3390/jcm11020405] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/04/2022] [Accepted: 01/11/2022] [Indexed: 01/01/2023] Open
Abstract
Since the start of the COVID-19 pandemic, many studies have investigated the humoral response to SARS-CoV-2 during infection. Studies with native viral proteins constitute a first-line approach to assessing the overall immune response, but small peptides are an accurate and valuable tool for the fine characterization of B-cell epitopes, despite the restriction of this approach to the determination of linear epitopes. In this study, we used ELISA and peptides covering a selection of structural and non-structural SARS-CoV-2 proteins to identify key epitopes eliciting a strong immune response that could serve as a biological signature of disease characteristics, such as severity, in particular. We used 213 plasma samples from a cohort of patients well-characterized clinically and biologically and followed for COVID-19 infection. We found that patients developing severe disease had higher titers of antibodies mapping to multiple specific epitopes than patients with mild to moderate disease. These data are potentially important as they could be used for immunological profiling to improve our knowledge of the quantitative and qualitative characteristics of the humoral response in relation to patient outcome.
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Ziemssen T, Groth M, Rauser B, Bopp T. Assessing the immune response to SARS-CoV-2 mRNA vaccines in siponimod-treated patients: a nonrandomized controlled clinical trial (AMA-VACC). Ther Adv Neurol Disord 2022; 15:17562864221135305. [PMID: 36381503 PMCID: PMC9647234 DOI: 10.1177/17562864221135305] [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: 06/24/2022] [Accepted: 10/02/2022] [Indexed: 11/10/2022] Open
Abstract
Background: Systematic data are lacking on the immune response toward SARS-CoV-2 mRNA vaccination in SPMS patients on disease-modifying therapies (DMTs). Objective: The AMA-VACC clinical trial was designed to characterize immune responses to SARS-CoV-2 mRNA vaccines in siponimod-treated SPMS patients. Design: AMA-VACC is an ongoing three-cohort, multicenter, open-label, prospective clinical study. Methods: The study included patients at risk for SPMS or patients with SPMS diagnosis. Patients received SARS-CoV-2 mRNA vaccine as part of their clinical routine during ongoing siponimod treatment (cohort 1), during siponimod treatment interruption (cohort 2), or while on dimethyl fumarate, glatiramer acetate, beta-interferons, teriflunomide, or no current therapy (cohort 3). SARS-CoV-2-specific neutralizing antibodies and T-cell responses were measured 1 week and 1 month after the second dose of vaccination. Results: In total, 17 patients, 4 patients, and 20 patients were recruited into cohorts 1, 2, and 3, respectively. The primary endpoint of seroconversion for SARS-CoV-2-neutralizing antibodies at week 1 was reached by 52.9%, 75.0%, and 90.0% of patients in cohorts 1, 2, and 3, respectively. For 64.7% of patients in cohort 1, all patients in cohort 2, and 95% of patients in cohort 3, seroconversion was observed at either week 1 or month 1 or both time points. After 1 week, 71.4% of cohort 1, 75.0% of cohort 2, and 85.0% of cohort 3 were positive for either SARS-CoV-2-neutralizing antibodies or SARS-CoV-2-specific T-cells or both. After 1 month, the rates were 56.3%, 100.0%, and 95.0%, respectively. Conclusion: The study shows that the majority of siponimod patients mount humoral and cellular immune response under continuous siponimod treatment. The data do not sufficiently support interruption of treatment for the purpose of vaccination. Registration: EU Clinical Trials Register: EudraCT 2020-005752-38 (www.clinicaltrialsregister.eu); ClinicalTrials.gov: NCT04792567 (https://clinicaltrials.gov).
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Affiliation(s)
- Tjalf Ziemssen
- Department of Neurology, Center of Clinical Neuroscience, Carl Gustav Carus University Clinic, University Hospital of Dresden, Fetscherstraße 74, 01307 Dresden, Germany
| | | | | | - Tobias Bopp
- Institute for Immunology, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
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Zhang J, Zhang H, Sun L. Therapeutic antibodies for COVID-19: is a new age of IgM, IgA and bispecific antibodies coming? MAbs 2022; 14:2031483. [PMID: 35220888 PMCID: PMC8890389 DOI: 10.1080/19420862.2022.2031483] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 01/13/2022] [Accepted: 01/16/2022] [Indexed: 12/23/2022] Open
Abstract
Early humoral immune responses to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are dominated by IgM and IgA antibodies, which greatly contribute to virus neutralization at mucosal sites. Given the essential roles of IgM and IgA in the control and elimination of SARS-CoV-2 infection, the mucosal immunity could be exploited for therapeutic and prophylactic purposes. However, almost all neutralizing antibodies that are authorized for emergency use and under clinical development are IgG antibodies, and no vaccine has been developed to boost mucosal immunity for SARS-CoV-2 infection. In addition to IgM and IgA, bispecific antibodies (bsAbs) combine specificities of two antibodies in one molecule, representing an important alternative to monoclonal antibody cocktails. Here, we summarize the latest advances in studies on IgM, IgA and bsAbs against SARS-CoV-2. The current challenges and future directions in vaccine design and antibody-based therapeutics are also discussed.
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Affiliation(s)
- Jingjing Zhang
- Department of Pathogens and Infectious Disease Prevention and Control, School of Public Health (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107China
| | - Han Zhang
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, Yunnan, China, 650118
| | - Litao Sun
- Department of Pathogens and Infectious Disease Prevention and Control, School of Public Health (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107China
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Tsang HW, Chua GT, To KKW, Wong JSC, Tu W, Kwok JSY, Wong WHS, Wang X, Zhang Y, Rosa Duque JS, Chan GCF, Chu WK, Pang CP, Tam PKH, Lau YL, Wong ICK, Leung WH, Yuen KY, Kwan MYW, Ip P. Assessment of SARS-CoV-2 Immunity in Convalescent Children and Adolescents. Front Immunol 2021; 12:797919. [PMID: 34975908 PMCID: PMC8718543 DOI: 10.3389/fimmu.2021.797919] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 12/02/2021] [Indexed: 01/08/2023] Open
Abstract
Persistence of protective immunity for SARS-CoV-2 is important against reinfection. Knowledge on SARS-CoV-2 immunity in pediatric patients is currently lacking. We opted to assess the SARS-CoV-2 adaptive immunity in recovered children and adolescents, addressing the pediatrics specific immunity towards COVID-19. Two independent assays were performed to investigate humoral and cellular immunological memory in pediatric convalescent COVID-19 patients. Specifically, RBD IgG, CD4+, and CD8+ T cell responses were identified and quantified in recovered children and adolescents. SARS-CoV-2-specific RBD IgG detected in recovered patients had a half-life of 121.6 days and estimated duration of 7.9 months compared with baseline levels in controls. The specific T cell response was shown to be independent of days after diagnosis. Both CD4+ and CD8+ T cells showed robust responses not only to spike (S) peptides (a main target of vaccine platforms) but were also similarly activated when stimulated by membrane (M) and nuclear (N) peptides. Importantly, we found the differences in the adaptive responses were correlated with the age of the recovered patients. The CD4+ T cell response to SARS-CoV-2 S peptide in children aged <12 years correlated with higher SARS-CoV-2 RBD IgG levels, suggesting the importance of a T cell-dependent humoral response in younger children under 12 years. Both cellular and humoral immunity against SARS-CoV-2 infections can be induced in pediatric patients. Our important findings provide fundamental knowledge on the immune memory responses to SARS-CoV-2 in recovered pediatric patients.
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Affiliation(s)
- Hing Wai Tsang
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Gilbert T. Chua
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Kelvin K. W. To
- State Key Laboratory for Emerging Infectious Diseases, Carol Yu Centre for Infection, Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Joshua S. C. Wong
- Department of Paediatrics and Adolescent Medicine, Prince Margaret Hospital, Hospital Authority, Hong Kong, Hong Kong SAR, China
| | - Wenwei Tu
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Janette S. Y. Kwok
- Department of Pathology, Queen Mary Hospital, Hospital Authority, Hong Kong, Hong Kong SAR, China
| | - Wilfred H. S. Wong
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Xiwei Wang
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Yanmei Zhang
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Jaime S. Rosa Duque
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Godfrey C. F. Chan
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Wai Kit Chu
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - CP Pang
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Paul K. H. Tam
- Department of Surgery and Dr. Li Dak Sam Research Centre, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
- Faculty of Medicine, Macau University of Science and Technology, Macau, Macau SAR, China
| | - Yu Lung Lau
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Ian C. K. Wong
- Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - WH Leung
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Kwok-Yung Yuen
- State Key Laboratory for Emerging Infectious Diseases, Carol Yu Centre for Infection, Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Mike Y. W. Kwan
- Department of Paediatrics and Adolescent Medicine, Prince Margaret Hospital, Hospital Authority, Hong Kong, Hong Kong SAR, China
- *Correspondence: Mike Y. W. Kwan, ; Patrick Ip,
| | - Patrick Ip
- Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
- *Correspondence: Mike Y. W. Kwan, ; Patrick Ip,
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Caballero-García A, Noriega DC, Bello HJ, Roche E, Córdova-Martínez A. The Immunomodulatory Function of Vitamin D, with Particular Reference to SARS-CoV-2. MEDICINA (KAUNAS, LITHUANIA) 2021; 57:1321. [PMID: 34946266 PMCID: PMC8706376 DOI: 10.3390/medicina57121321] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/20/2021] [Accepted: 11/30/2021] [Indexed: 12/15/2022]
Abstract
Vaccines are the only way to reduce the morbidity associated to SARS-CoV-2 infection. The appearance of new mutations urges us to increase the effectiveness of vaccines as a complementary alternative. In this context, the use of adjuvant strategies has improved the effectiveness of different vaccines against virus infections such as dengue, influenza, and common cold. Recent reports on patients infected by COVID-19 reveal that low levels of circulating vitamin D correlate with a severe respiratory insufficiency. The immunomodulatory activity of this micronutrient attenuates the synthesis of pro-inflammatory cytokines and at the same time, increases antibody production. Therefore, the present review proposes the use of vitamin D as adjuvant micronutrient to increase the efficacy of vaccines against SARS-CoV-2 infection.
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Affiliation(s)
- Alberto Caballero-García
- Department of Anatomy and Radiology, Health Sciences Faculty, GIR of Physical Exercise and Aging, Campus Universitario “Los Pajaritos”, 42004 Soria, Spain;
| | - David C. Noriega
- Spine Department, Valladolid University Hospital, University of Valladolid, 47005 Valladolid, Spain;
| | - Hugo J. Bello
- Department of Mathematics, School of Forestry Industry and Agronomic Engineering and Bioenergy, GIR of Physical Exercise and Aging, Campus Universitario “Los Pajaritos”, 42004 Soria, Spain;
| | - Enrique Roche
- Department of Applied Biology-Nutrition, Institute of Bioengineering, University Miguel Hernández, 03202 Elche, Spain;
- CIBER Physiopathology of Obesity and Nutrition (CIBEROBN), Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain
| | - Alfredo Córdova-Martínez
- Department of Biochemistry, Molecular Biology and Physiology, Faculty of Health Sciences, GIR of Physical Exercise and Aging, Campus Universitario “Los Pajaritos”, Valladolid University, 42004 Soria, Spain
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48
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Taylor SC. A practical approach to SARS-CoV-2 testing in a pre and post-vaccination era. JOURNAL OF CLINICAL VIROLOGY PLUS 2021; 1:100044. [PMID: 35262025 PMCID: PMC8500693 DOI: 10.1016/j.jcvp.2021.100044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 09/23/2021] [Accepted: 10/02/2021] [Indexed: 11/26/2022] Open
Abstract
As countries globally are in the process of planning, introducing or implementing mass vaccination strategies while continuing to deal with the ongoing SARS-CoV-2 pandemic, an evolution in testing strategies may be required to minimize spread in mixed vaccinated and non-vaccinated populations. This mini-review explores the key public health questions associated with the widely varying efficacy of commercially available vaccines and their persistence of protection in the context of a growing number of variant virus strains. A new strategy for SARS-CoV-2 testing that accommodates the current and evolving pandemic paradigm is proposed.
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Affiliation(s)
- Sean C Taylor
- GENSCRIPT USA INC. 860 Centennial Ave., Piscataway 08854, NJ, United States
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dos Santos Ferreira CE, Gómez-Dantés H, Junqueira Bellei NC, López E, Nogales Crespo KA, O’Ryan M, Villegas J. The Role of Serology Testing in the Context of Immunization Policies for COVID-19 in Latin American Countries. Viruses 2021; 13:2391. [PMID: 34960660 PMCID: PMC8706237 DOI: 10.3390/v13122391] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/18/2021] [Accepted: 11/18/2021] [Indexed: 12/16/2022] Open
Abstract
This review aims to explore the role and value of serology testing in the context of COVID-19 immunization policies in Latin American countries and the barriers and challenges to the adequate use and uptake of this tool. It builds on a review of the academic literature, evidence, and existing policies, and includes a multistage process of discussion and feedback by a group of five experts. Regional and country-level evidence and resources from five focus countries-Argentina, Brazil, Chile, Colombia, and Mexico-were collected and analyzed. This review contains an overview of (1) the impact of the SARS-CoV-2 pandemic, the variants of concern and current testing strategies, (2) the introduction of COVID-19 vaccination, (3) the potential use of serology testing to support immunization initiatives, (4) the current frameworks for the use of serology testing in the region, and (5) the barriers and challenges to implementing serology testing in the context of COVID-19 immunization policies, including a discussion on the potential actions required to address these barriers and facilitate the uptake of this strategy in the region. Stakeholders can use elements of this document to guide timely decision-making, raise awareness, and inspire further studies.
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Affiliation(s)
- Carlos E. dos Santos Ferreira
- Clinical Pathology, Hospital Israelita Albert Einstein, São Paulo 05652-900, Brazil;
- Microbiology Sector, Federal University of São Paulo’s Central Laboratory Activities, São Paulo 04088-002, Brazil
- Brazilian Society of Clinical Pathology and Laboratory Medicine, Rio de Janeiro 22220-040, Brazil
| | | | | | - Eduardo López
- Department of Medicine, Hospital de Niños Gutiérrez, Buenos Aires C1425-EFD, Argentina;
- Pediatric Infectious Diseases Program, Faculty of Medicine, University of Buenos Aires, Buenos Aires C1121-ABG, Argentina
- Pediatrics and Vaccinology, Faculty of Medicine, University of Salvador, Buenos Aires C1055-AAG, Argentina
| | | | - Miguel O’Ryan
- Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago de Chile 8380000, Chile;
- Millennium Institute of Immunology and Immunotherapy, University of Chile, Santiago de Chile 8331150, Chile
- Chilean Academy of Medicine, Santiago de Chile 6500445, Chile
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50
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Changes in COVID-19 IgM and IgG antibodies in emergency medical technicians (EMTs). Am J Emerg Med 2021; 52:59-63. [PMID: 34864629 PMCID: PMC8594169 DOI: 10.1016/j.ajem.2021.11.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 11/08/2021] [Accepted: 11/11/2021] [Indexed: 12/02/2022] Open
Abstract
Introduction Serologic testing can provide a safe and fast approach for assessing SARS-CoV-2 antibodies. These tests can be utilized as a complementary method in diagnosis and patients' follow-up, and can also be helpful in epidemiological studies. This study aimed to describe temporal changes in the incidence of COVID-19 IgM and IgG antibodies in emergency medical technicians (EMTs) within a specified time period. Methods All EMTs working for Tehran Emergency Medical Service (EMS) center during May to September 2020 were eligible for this study. Those EMTs who were suspected/probable/confirmed cases of COVID-19, based on WHO defined criteria and were willing to participate, entered the study. The EMTs underwent serology testing four weeks after the occurrence of exposure (in suspected cases) or onset of their symptoms (in probable/confirmed cases). Cases were further confirmed by RT-PCR and/or lung CT, and antibody testing was performed for the second and third time with 12-week intervals. Finger-stick blood sampling was utilized for the specimen collection in three different phases. Samples were then analyzed by a commercial immunochromatography-based kit for qualitative measurement of serum IgM and IgG antibodies against the COVID-19 S-protein antigen. Results Two hundred eighty-four participants met the inclusion criteria; their mean age was 35.9 (SD = 7.6) years and consisted of 244 (85.9%) males. COVID-19 was confirmed in 169 out of 284 participants. Subsequently, 142 and 122 participants were included in phases 2 and 3 of the study, respectively. The number of seronegative patients exceeded seropositive ones in all three phases. At baseline, 162 (57%) patients were seronegative, 27 (9.5%) were only positive for IgG, 3 (1.1%) were only positive for IgM, and 92 (32.4%) were positive for both antibodies; Seventy-eight (54.9%) were seronegative, and 31 (21.8%) were positive for both antibodies in the second phase; These values were 85 (69.6%) and 8 (6.6%) for the third phase, respectively. Among the people who were positive IgG in the first phase (80 people), 56.3% were still positive in the second phase and 27.5% in both subsequent phases. Conclusion The results of our study show that there is a significant reduction in COVID-19 antibody seropositivity over time.
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