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LY-CoV1404 (bebtelovimab) potently neutralizes SARS-CoV-2 variants
bioRxiv - Immunology Pub Date : 2022-03-24 , DOI: 10.1101/2021.04.30.442182
Kathryn Westendorf , Stefanie Žentelis , Denisa Foster , Peter Vaillancourt , Matthew Wiggin , Erica Lovett , Jörg Hendle , Anna Pustilnik , J. Michael Sauder , Lucas Kraft , Yuri Hwang , Robert W. Siegel , Jinbiao Chen , Beverly A. Heinz , Richard E. Higgs , Nicole Kalleward , Kevin Jepson , Rodrigo Goya , Maia A. Smith , David W. Collins , Davide Pellacani , Ping Xiang , Valentine de Puyraimond , Marketa Ricicova , Lindsay Devorkin , Caitlin Pritchard , Aoise O'Neill , Courtney Cohen , John Dye , Kathleen I. Huie , Catherine V. Badger , Darwyn Kobasa , Jonathan Audet , Joshua J. Freitas , Saleema Hassanali , Ina Hughes , Luis Munoz , Holly C. Palma , Bharathi Ramamurthy , Robert W. Cross , Thomas W. Geisbert , Iliana Lanz , Lisa Anderson , Payal Sipahimalani , Kizzmekia S. Corbett , Lingshu Wang , Eun Sung Yang , Yi Zhang , Wei Shi , Barney S. Graham , John R. Mascola , Tara L. Fernandez , Carl L. Hansen , Ester Falconer , Bryan E. Jones , Bryan C. Barnhart

SARS-CoV-2 neutralizing monoclonal antibodies (mAbs) can reduce the risk of hospitalization when administered early during COVID-19 disease. However, the emergence of variants of concern has negatively impacted the therapeutic use of some authorized mAbs. Using a high throughput B-cell screening pipeline, we isolated a highly potent SARS-CoV-2 spike glycoprotein receptor binding domain (RBD)-specific antibody called LY-CoV1404 (also known as bebtelovimab). LY-CoV1404 potently neutralizes authentic SARS-CoV-2 virus, including the prototype, B.1.1.7, B.1.351 and B.1.617.2). In pseudovirus neutralization studies, LY-CoV1404 retains potent neutralizing activity against numerous variants including B.1.1.7, B.1.351, B.1.617.2, B.1.427/B.1.429, P.1, B.1.526, B.1.1.529, and the BA.2 subvariant and retains binding to spike proteins with a variety of underlying RBD mutations including K417N, L452R, E484K, and N501Y. Structural analysis reveals that the contact residues of the LY-CoV1404 epitope are highly conserved with the exception of N439 and N501. Notably, the binding and neutralizing activity of LY-CoV1404 is unaffected by the most common mutations at these positions (N439K and N501Y). The breadth of reactivity to amino acid substitutions present among current VOC together with broad and potent neutralizing activity and the relatively conserved epitope suggest that LY-CoV1404 has the potential to be an effective therapeutic agent to treat all known variants causing COVID-19.

中文翻译:

LY-CoV1404 (bebtelovimab) 有效中和 SARS-CoV-2 变体

在 COVID-19 疾病早期使用 SARS-CoV-2 中和单克隆抗体 (mAb) 可以降低住院风险。然而,关注变体的出现对一些授权 mAb 的治疗使用产生了负面影响。使用高通量 B 细胞筛选流程,我们分离出一种高效的 SARS-CoV-2 刺突糖蛋白受体结合域 (RBD) 特异性抗体,称为 LY-CoV1404(也称为 bebtelovimab)。LY-CoV1404 能有效中和真正的 SARS-CoV-2 病毒,包括原型 B.1.1.7、B.1.351 和 B.1.617.2)。在假病毒中和研究中,LY-CoV1404 对包括 B.1.1.7、B.1.351、B.1.617.2、B.1.427/B.1.429、P.1、B.1.526、B. 1.1.529 和 BA。2 个亚变体,并保留与具有各种潜在 RBD 突变(包括 K417N、L452R、E484K 和 N501Y)的刺突蛋白的结合。结构分析表明,除了 N439 和 N501 之外,LY-CoV1404 表位的接触残基高度保守。值得注意的是,LY-CoV1404 的结合和中和活性不受这些位置最常见的突变(N439K 和 N501Y)的影响。当前 VOC 中存在的对氨基酸取代的广泛反应性以及广泛而有效的中和活性以及相对保守的表位表明 LY-CoV1404 有可能成为治疗所有已知导致 COVID-19 变体的有效治疗剂。结构分析表明,除了 N439 和 N501 之外,LY-CoV1404 表位的接触残基高度保守。值得注意的是,LY-CoV1404 的结合和中和活性不受这些位置最常见的突变(N439K 和 N501Y)的影响。当前 VOC 中存在的对氨基酸取代的广泛反应性以及广泛而有效的中和活性以及相对保守的表位表明 LY-CoV1404 有可能成为治疗所有已知导致 COVID-19 变体的有效治疗剂。结构分析表明,除了 N439 和 N501 之外,LY-CoV1404 表位的接触残基高度保守。值得注意的是,LY-CoV1404 的结合和中和活性不受这些位置最常见的突变(N439K 和 N501Y)的影响。当前 VOC 中存在的对氨基酸取代的广泛反应性以及广泛而有效的中和活性以及相对保守的表位表明 LY-CoV1404 有可能成为治疗所有已知导致 COVID-19 变体的有效治疗剂。
更新日期:2022-03-24
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