National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)
R01AI127521
米国
引用
ジャーナル: Cell Rep / 年: 2019 タイトル: Structural Definition of a Neutralization-Sensitive Epitope on the MERS-CoV S1-NTD. 著者: Nianshuang Wang / Osnat Rosen / Lingshu Wang / Hannah L Turner / Laura J Stevens / Kizzmekia S Corbett / Charles A Bowman / Jesper Pallesen / Wei Shi / Yi Zhang / Kwanyee Leung / Robert N ...著者: Nianshuang Wang / Osnat Rosen / Lingshu Wang / Hannah L Turner / Laura J Stevens / Kizzmekia S Corbett / Charles A Bowman / Jesper Pallesen / Wei Shi / Yi Zhang / Kwanyee Leung / Robert N Kirchdoerfer / Michelle M Becker / Mark R Denison / James D Chappell / Andrew B Ward / Barney S Graham / Jason S McLellan / 要旨: Middle East respiratory syndrome coronavirus (MERS-CoV) emerged into the human population in 2012 and has caused substantial morbidity and mortality. Potently neutralizing antibodies targeting the ...Middle East respiratory syndrome coronavirus (MERS-CoV) emerged into the human population in 2012 and has caused substantial morbidity and mortality. Potently neutralizing antibodies targeting the receptor-binding domain (RBD) on MERS-CoV spike (S) protein have been characterized, but much less is known about antibodies targeting non-RBD epitopes. Here, we report the structural and functional characterization of G2, a neutralizing antibody targeting the MERS-CoV S1 N-terminal domain (S1-NTD). Structures of G2 alone and in complex with the MERS-CoV S1-NTD define a site of vulnerability comprising two loops, each of which contain a residue mutated in G2-escape variants. Cell-surface binding studies and in vitro competition experiments demonstrate that G2 strongly disrupts the attachment of MERS-CoV S to its receptor, dipeptidyl peptidase-4 (DPP4), with the inhibition requiring the native trimeric S conformation. These results advance our understanding of antibody-mediated neutralization of coronaviruses and should facilitate the development of immunotherapeutics and vaccines against MERS-CoV.