ジャーナル: Emerg Microbes Infect / 年: 2023 タイトル: Structural insights into broadly neutralizing antibodies elicited by hybrid immunity against SARS-CoV-2. 著者: Mengxiao Luo / Biao Zhou / Eswar R Reddem / Bingjie Tang / Bohao Chen / Runhong Zhou / Hang Liu / Lihong Liu / Phinikoula S Katsamba / Ka-Kit Au / Hiu-On Man / Kelvin Kai-Wang To / Kwok-Yung ...著者: Mengxiao Luo / Biao Zhou / Eswar R Reddem / Bingjie Tang / Bohao Chen / Runhong Zhou / Hang Liu / Lihong Liu / Phinikoula S Katsamba / Ka-Kit Au / Hiu-On Man / Kelvin Kai-Wang To / Kwok-Yung Yuen / Lawrence Shapiro / Shangyu Dang / David D Ho / Zhiwei Chen / 要旨: Increasing spread by SARS-CoV-2 Omicron variants challenges existing vaccines and broadly reactive neutralizing antibodies (bNAbs) against COVID-19. Here we determine the diversity, potency, breadth ...Increasing spread by SARS-CoV-2 Omicron variants challenges existing vaccines and broadly reactive neutralizing antibodies (bNAbs) against COVID-19. Here we determine the diversity, potency, breadth and structural insights of bNAbs derived from memory B cells of BNT162b2-vaccinee after homogeneous Omicron BA.1 breakthrough infection. The infection activates diverse memory B cell clonotypes for generating potent class I/II and III bNAbs with new epitopes mapped to the receptor-binding domain (RBD). The top eight bNAbs neutralize wildtype and BA.1 potently but display divergent IgH/IgL sequences and neuralization profiles against other variants of concern (VOCs). Two of them (P2D9 and P3E6) belonging to class III NAbs display comparable potency against BA.4/BA.5, although structural analysis reveals distinct modes of action. P3E6 neutralizes all variants tested through a unique bivalent interaction with two RBDs. Our findings provide new insights into hybrid immunity on BNT162b2-induced diverse memory B cells in response to Omicron breakthrough infection for generating diverse bNAbs with distinct structural basis.
解像度: 3.2→63.55 Å / Cor.coef. Fo:Fc: 0.909 / Cor.coef. Fo:Fc free: 0.875 / SU B: 62.546 / SU ML: 0.479 / 交差検証法: THROUGHOUT / ESU R Free: 0.554 / 立体化学のターゲット値: MAXIMUM LIKELIHOOD 詳細: U VALUES : WITH TLS ADDED HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS U VALUES : RESIDUAL ONLY
Rfactor
反射数
%反射
Selection details
Rfree
0.29747
747
5 %
RANDOM
Rwork
0.23478
-
-
-
obs
0.23788
14187
99.39 %
-
溶媒の処理
イオンプローブ半径: 0.8 Å / 減衰半径: 0.8 Å / VDWプローブ半径: 1.3 Å / 溶媒モデル: MASK