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Zhou, Daming; Dejnirattisai, Wanwisa; Supasa, Piyada; Liu, Chang; Mentzer, Alexander J.; Ginn, Helen M.; Zhao, Yuguang; Duyvesteyn, Helen M.E.; Tuekprakhon, Aekkachai; Nutalai, Rungtiwa; Wang, Beibei; Paesen, Guido C.; Lopez-Camacho, Cesar; Slon-Campos, Jose; Hallis, Bassam; Coombes, Naomi; Bewley, Kevin; Charlton, Sue; Walter, Thomas S.; Skelly, Donal; Lumley, Sheila F.; Dold, Christina; Levin, Robert; Dong, Tao; Pollard, Andrew J.; Knight, Julian C.; Crook, Derrick; Lambe, Teresa; Clutterbuck, Elizabeth; Bibi, Sagida; Flaxman, Amy; Bittaye, Mustapha; Belij-Rammerstorfer, Sandra; Gilbert, Sarah; James, William; Carroll, Miles W.; Klenerman, Paul; Barnes, Eleanor; Dunachie, Susanna J.; Fry, Elizabeth E.; Mongkolsapaya, Juthathip; Ren, Jingshan; Stuart, David I.; Screaton, Gavin R.
Cell, 04/2021, Volume: 184, Issue: 9Journal Article
The race to produce vaccines against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) began when the first sequence was published, and this forms the basis for vaccines currently deployed globally. Independent lineages of SARS-CoV-2 have recently been reported: UK, B.1.1.7; South Africa, B.1.351; and Brazil, P.1. These variants have multiple changes in the immunodominant spike protein that facilitates viral cell entry via the angiotensin-converting enzyme-2 (ACE2) receptor. Mutations in the receptor recognition site on the spike are of great concern for their potential for immune escape. Here, we describe a structure-function analysis of B.1.351 using a large cohort of convalescent and vaccinee serum samples. The receptor-binding domain mutations provide tighter ACE2 binding and widespread escape from monoclonal antibody neutralization largely driven by E484K, although K417N and N501Y act together against some important antibody classes. In a number of cases, it would appear that convalescent and some vaccine serum offers limited protection against this variant. Display omitted •Reduced B.1.351 neutralization by mAbs and sera induced by early SARS-CoV-2 isolates•B.1.351 neutralization titer reduced 8- to 9-fold for Pfizer and AstraZeneca vaccinees•E484K, K417N, and N501Y cause widespread escape from mAbs•NTD deletion in B.1.351 abrogates neutralization by a potent neutralizing human mAb Structure-function analysis of the SARS-CoV-2 variant B.1.351 using serum samples from convalescent and vaccinated individuals reveals how mutations in the viral spike protein result in tighter binding to the receptor ACE2 and allow escape from monoclonal antibody neutralization.
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