+検索条件
-Structure paper
タイトル | Affinity maturation of SARS-CoV-2 neutralizing antibodies confers potency, breadth, and resilience to viral escape mutations. |
---|---|
ジャーナル・号・ページ | Immunity, Vol. 54, Issue 8, Page 1853-11868.e7, Year 2021 |
掲載日 | 2021年8月10日 |
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 / |
PubMed 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. |
リンク | Immunity / PubMed:34331873 / PubMed Central |
手法 | EM (単粒子) / X線回折 |
解像度 | 1.26 - 3.55 Å |
構造データ | EMDB-24318, PDB-7r8m: EMDB-24319, PDB-7r8n: EMDB-24320, PDB-7r8o: PDB-7n3e: PDB-7n3f: PDB-7n3g: PDB-7n3h: PDB-7n3i: PDB-7r8l: |
化合物 | ChemComp-HOH: ChemComp-NAG: |
由来 |
|
キーワード | IMMUNE SYSTEM / severe acute respiratory syndrome coronavirus-2 / spike protein / neutralizing antibodies / IMMUNE SYSTEM/VIRAL PROTEIN / IMMUNE SYSTEM-VIRAL PROTEIN complex / VIRAL PROTEIN/IMMUNE SYSTEM / SARS-CoV-2 / receptor binding domain / RBD / neutralizing antibody / COVID-19 / spike / ANTIVIRAL PROTEIN / VIRAL PROTEIN-IMMUNE SYSTEM complex |