National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)
P01 AI144462
米国
引用
ジャーナル: Cell Rep / 年: 2024 タイトル: Deep repertoire mining uncovers ultra-broad coronavirus neutralizing antibodies targeting multiple spike epitopes. 著者: Jonathan Hurtado / Thomas F Rogers / David B Jaffe / Bruce A Adams / Sandhya Bangaru / Elijah Garcia / Tazio Capozzola / Terrence Messmer / Pragati Sharma / Ge Song / Nathan Beutler / Wanting ...著者: Jonathan Hurtado / Thomas F Rogers / David B Jaffe / Bruce A Adams / Sandhya Bangaru / Elijah Garcia / Tazio Capozzola / Terrence Messmer / Pragati Sharma / Ge Song / Nathan Beutler / Wanting He / Katharina Dueker / Rami Musharrafieh / Sarah Burbach / Alina Truong / Michael J T Stubbington / Dennis R Burton / Raiees Andrabi / Andrew B Ward / Wyatt J McDonnell / Bryan Briney / 要旨: The development of vaccines and therapeutics that are broadly effective against known and emergent coronaviruses is an urgent priority. We screened the circulating B cell repertoires of COVID-19 ...The development of vaccines and therapeutics that are broadly effective against known and emergent coronaviruses is an urgent priority. We screened the circulating B cell repertoires of COVID-19 survivors and vaccinees to isolate over 9,000 severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-specific monoclonal antibodies (mAbs), providing an expansive view of the SARS-CoV-2-specific Ab repertoire. Among the recovered antibodies was TXG-0078, an N-terminal domain (NTD)-specific neutralizing mAb that recognizes diverse alpha- and beta-coronaviruses. TXG-0078 achieves its exceptional binding breadth while utilizing the same VH1-24 variable gene signature and heavy-chain-dominant binding pattern seen in other NTD-supersite-specific neutralizing Abs with much narrower specificity. We also report CC24.2, a pan-sarbecovirus neutralizing antibody that targets a unique receptor-binding domain (RBD) epitope and shows similar neutralization potency against all tested SARS-CoV-2 variants, including BQ.1.1 and XBB.1.5. A cocktail of TXG-0078 and CC24.2 shows protection in vivo, suggesting their potential use in variant-resistant therapeutic Ab cocktails and as templates for pan-coronavirus vaccine design.
凍結剤: ETHANE / チャンバー内湿度: 100 % / チャンバー内温度: 283 K / 装置: FEI VITROBOT MARK IV
詳細
The spike protein was incubated with a 3-fold molar excess of TXG-0078 Fab for 30 minutes and mixed with 0.04 mM Lauryl maltose neopentyl glycol solution immediately prior to sample deposition.
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電子顕微鏡法
顕微鏡
TFS GLACIOS
撮影
フィルム・検出器のモデル: FEI FALCON IV (4k x 4k) 検出モード: COUNTING / 撮影したグリッド数: 1 / 実像数: 4257 / 平均電子線量: 50.0 e/Å2