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Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Cell 2021 ; 184 (13): 3452-3466.e18 Nephropedia Template TP
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An infectivity-enhancing site on the SARS-CoV-2 spike protein targeted by antibodies #MMPMID34139176
Liu Y; Soh WT; Kishikawa JI; Hirose M; Nakayama EE; Li S; Sasai M; Suzuki T; Tada A; Arakawa A; Matsuoka S; Akamatsu K; Matsuda M; Ono C; Torii S; Kishida K; Jin H; Nakai W; Arase N; Nakagawa A; Matsumoto M; Nakazaki Y; Shindo Y; Kohyama M; Tomii K; Ohmura K; Ohshima S; Okamoto T; Yamamoto M; Nakagami H; Matsuura Y; Nakagawa A; Kato T; Okada M; Standley DM; Shioda T; Arase H
Cell 2021[Jun]; 184 (13): 3452-3466.e18 PMID34139176show ga
Antibodies against the receptor-binding domain (RBD) of the SARS-CoV-2 spike protein prevent SARS-CoV-2 infection. However, the effects of antibodies against other spike protein domains are largely unknown. Here, we screened a series of anti-spike monoclonal antibodies from coronavirus disease 2019 (COVID-19) patients and found that some of antibodies against the N-terminal domain (NTD) induced the open conformation of RBD and thus enhanced the binding capacity of the spike protein to ACE2 and infectivity of SARS-CoV-2. Mutational analysis revealed that all of the infectivity-enhancing antibodies recognized a specific site on the NTD. Structural analysis demonstrated that all infectivity-enhancing antibodies bound to NTD in a similar manner. The antibodies against this infectivity-enhancing site were detected at high levels in severe patients. Moreover, we identified antibodies against the infectivity-enhancing site in uninfected donors, albeit at a lower frequency. These findings demonstrate that not only neutralizing antibodies but also enhancing antibodies are produced during SARS-CoV-2 infection.