National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)
K99AI153465
米国
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)
P01-AI138938-S1
米国
引用
ジャーナル: Immunity / 年: 2021 タイトル: Affinity maturation of SARS-CoV-2 neutralizing antibodies confers potency, breadth, and resilience to viral escape mutations. 著者: Frauke Muecksch / Yiska Weisblum / Christopher O Barnes / Fabian Schmidt / Dennis Schaefer-Babajew / Zijun Wang / Julio C C Lorenzi / Andrew I Flyak / Andrew T DeLaitsch / Kathryn E Huey- ...著者: Frauke Muecksch / Yiska Weisblum / Christopher O Barnes / Fabian Schmidt / Dennis Schaefer-Babajew / Zijun Wang / Julio C C Lorenzi / Andrew I Flyak / Andrew T DeLaitsch / Kathryn E Huey-Tubman / Shurong Hou / Celia A Schiffer / Christian Gaebler / Justin Da Silva / Daniel Poston / Shlomo Finkin / Alice Cho / Melissa Cipolla / Thiago Y Oliveira / Katrina G Millard / Victor Ramos / Anna Gazumyan / Magdalena Rutkowska / Marina Caskey / Michel C Nussenzweig / Pamela J Bjorkman / Theodora Hatziioannou / Paul D Bieniasz / 要旨: Antibodies elicited by infection accumulate somatic mutations in germinal centers that can increase affinity for cognate antigens. We analyzed 6 independent groups of clonally related severe acute ...Antibodies elicited by infection accumulate somatic mutations in germinal centers that can increase affinity for cognate antigens. We analyzed 6 independent groups of clonally related severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2) Spike receptor-binding domain (RBD)-specific antibodies from 5 individuals shortly after infection and later in convalescence to determine the impact of maturation over months. In addition to increased affinity and neutralization potency, antibody evolution changed the mutational pathways for the acquisition of viral resistance and restricted neutralization escape options. For some antibodies, maturation imposed a requirement for multiple substitutions to enable escape. For certain antibodies, affinity maturation enabled the neutralization of circulating SARS-CoV-2 variants of concern and heterologous sarbecoviruses. Antibody-antigen structures revealed that these properties resulted from substitutions that allowed additional variability at the interface with the RBD. These findings suggest that increasing antibody diversity through prolonged or repeated antigen exposure may improve protection against diversifying SARS-CoV-2 populations, and perhaps against other pandemic threat coronaviruses.
#1: ジャーナル: bioRxiv / 年: 2021 タイトル: Development of potency, breadth and resilience to viral escape mutations in SARS-CoV-2 neutralizing antibodies. 著者: Frauke Muecksch / Yiska Weisblum / Christopher O Barnes / Fabian Schmidt / Dennis Schaefer-Babajew / Julio C C Lorenzi / Andrew I Flyak / Andrew T DeLaitsch / Kathryn E Huey-Tubman / Shurong ...著者: Frauke Muecksch / Yiska Weisblum / Christopher O Barnes / Fabian Schmidt / Dennis Schaefer-Babajew / Julio C C Lorenzi / Andrew I Flyak / Andrew T DeLaitsch / Kathryn E Huey-Tubman / Shurong Hou / Celia A Schiffer / Christian Gaebler / Zijun Wang / Justin Da Silva / Daniel Poston / Shlomo Finkin / Alice Cho / Melissa Cipolla / Thiago Y Oliveira / Katrina G Millard / Victor Ramos / Anna Gazumyan / Magdalena Rutkowska / Marina Caskey / Michel C Nussenzweig / Pamela J Bjorkman / Theodora Hatziioannou / Paul D Bieniasz / 要旨: Antibodies elicited in response to infection undergo somatic mutation in germinal centers that can result in higher affinity for the cognate antigen. To determine the effects of somatic mutation on ...Antibodies elicited in response to infection undergo somatic mutation in germinal centers that can result in higher affinity for the cognate antigen. To determine the effects of somatic mutation on the properties of SARS-CoV-2 spike receptor-binding domain (RBD)-specific antibodies, we analyzed six independent antibody lineages. As well as increased neutralization potency, antibody evolution changed pathways for acquisition of resistance and, in some cases, restricted the range of neutralization escape options. For some antibodies, maturation apparently imposed a requirement for multiple spike mutations to enable escape. For certain antibody lineages, maturation enabled neutralization of circulating SARS-CoV-2 variants of concern and heterologous sarbecoviruses. Antibody-antigen structures revealed that these properties resulted from substitutions that allowed additional variability at the interface with the RBD. These findings suggest that increasing antibody diversity through prolonged or repeated antigen exposure may improve protection against diversifying SARS-CoV-2 populations, and perhaps against other pandemic threat coronaviruses.