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Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Science 2021 ; 373 (6556): ä Nephropedia Template TP
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Ultrapotent antibodies against diverse and highly transmissible SARS-CoV-2 variants #MMPMID34210892
Wang L; Zhou T; Zhang Y; Yang ES; Schramm CA; Shi W; Pegu A; Oloniniyi OK; Henry AR; Darko S; Narpala SR; Hatcher C; Martinez DR; Tsybovsky Y; Phung E; Abiona OM; Antia A; Cale EM; Chang LA; Choe M; Corbett KS; Davis RL; DiPiazza AT; Gordon IJ; Hait SH; Hermanus T; Kgagudi P; Laboune F; Leung K; Liu T; Mason RD; Nazzari AF; Novik L; O'Connell S; O'Dell S; Olia AS; Schmidt SD; Stephens T; Stringham CD; Talana CA; Teng IT; Wagner DA; Widge AT; Zhang B; Roederer M; Ledgerwood JE; Ruckwardt TJ; Gaudinski MR; Moore PL; Doria-Rose NA; Baric RS; Graham BS; McDermott AB; Douek DC; Kwong PD; Mascola JR; Sullivan NJ; Misasi J
Science 2021[Aug]; 373 (6556): ä PMID34210892show ga
The emergence of highly transmissible SARS-CoV-2 variants of concern (VOCs) that are resistant to therapeutic antibodies highlights the need for continuing discovery of broadly reactive antibodies. We identified four receptor binding domain-targeting antibodies from three early-outbreak convalescent donors with potent neutralizing activity against 23 variants, including the B.1.1.7, B.1.351, P.1, B.1.429, B.1.526, and B.1.617 VOCs. Two antibodies are ultrapotent, with subnanomolar neutralization titers [half-maximal inhibitory concentration (IC(50)) 0.3 to 11.1 nanograms per milliliter; IC(80) 1.5 to 34.5 nanograms per milliliter). We define the structural and functional determinants of binding for all four VOC-targeting antibodies and show that combinations of two antibodies decrease the in vitro generation of escape mutants, suggesting their potential in mitigating resistance development.