National Health and Medical Research Council (NHMRC, Australia)
GNT 2008092
オーストラリア
Damon Runyon Cancer Research Foundation
米国
引用
ジャーナル: Sci Adv / 年: 2023 タイトル: Potent pan huACE2-dependent sarbecovirus neutralizing monoclonal antibodies isolated from a BNT162b2-vaccinated SARS survivor. 著者: Wan Ni Chia / Chee Wah Tan / Aaron Wai Kit Tan / Barnaby Young / Tyler N Starr / Ester Lopez / Guntur Fibriansah / Jennifer Barr / Samuel Cheng / Aileen Ying-Yan Yeoh / Wee Chee Yap / Beng ...著者: Wan Ni Chia / Chee Wah Tan / Aaron Wai Kit Tan / Barnaby Young / Tyler N Starr / Ester Lopez / Guntur Fibriansah / Jennifer Barr / Samuel Cheng / Aileen Ying-Yan Yeoh / Wee Chee Yap / Beng Lee Lim / Thiam-Seng Ng / Wan Rong Sia / Feng Zhu / Shiwei Chen / Jinyan Zhang / Madeline Sheng Si Kwek / Allison J Greaney / Mark Chen / Gough G Au / Prasad N Paradkar / Malik Peiris / Amy W Chung / Jesse D Bloom / David Lye / Sheemei Lok / Lin-Fa Wang / 要旨: The emergence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants of concern such as Omicron hampered efforts in controlling the ongoing coronavirus disease 2019 pandemic due to ...The emergence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants of concern such as Omicron hampered efforts in controlling the ongoing coronavirus disease 2019 pandemic due to their ability to escape neutralizing antibodies induced by vaccination or prior infection, highlighting the need to develop broad-spectrum vaccines and therapeutics. Most human monoclonal antibodies (mAbs) reported to date have not demonstrated true pan-sarbecovirus neutralizing breadth especially against animal sarbecoviruses. Here, we report the isolation and characterization of highly potent mAbs targeting the receptor binding domain (RBD) of huACE2-dependent sarbecovirus from a SARS-CoV survivor vaccinated with BNT162b2. Among the six mAbs identified, one (E7) showed better huACE2-dependent sarbecovirus neutralizing potency and breadth than any other mAbs reported to date. Mutagenesis and cryo-electron microscopy studies indicate that these mAbs have a unique RBD contact footprint and that E7 binds to a quaternary structure-dependent epitope.
凍結剤: ETHANE / チャンバー内湿度: 100 % / チャンバー内温度: 277.15 K / 装置: FEI VITROBOT MARK IV
詳細
SARS-CoV-2 spike glycoprotein trimer complexed with Fab fragment of anti-RBD antibody E7
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電子顕微鏡法
顕微鏡
FEI TITAN KRIOS
特殊光学系
エネルギーフィルター - スリット幅: 20 eV
撮影
フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 撮影したグリッド数: 1 / 平均露光時間: 4.76 sec. / 平均電子線量: 31.6 e/Å2 詳細: Images were collected in counting mode at 25 frames per movie with an exposure time of 4.76 s per movie.