Inactivated SARS-CoV vaccine elicits high titers of spike protein-specific antibodies that block receptor binding and virus entry.
Inactivated SARS-CoV vaccine elicits high titers of spike protein-specific antibodies that block receptor binding and virus entry.
复制标题
灭活的SARS-COV疫苗会引起高峰蛋白特异性抗体的高滴度,这些抗体阻断受体结合和病毒的进入。
DOI:
10.1016/j.bbrc.2004.10.052
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发表时间:
2004-12-10
影响因子:
3.1
通讯作者:
Jiang S
中科院分区:
文献类型:
--
作者:
He Y;Zhou Y;Siddiqui P;Jiang S
The only severe acute respiratory syndrome (SARS) vaccine currently being tested in clinical trial consists of inactivated severe acute respiratory syndrome-associate coronavirus (SARS-CoV). However, limited information is available about host immune responses induced by the inactivated SARS vaccine. In this study, we demonstrated that SARS-CoV inactivated by β-propiolactone elicited high titers of antibodies in the immunized mice and rabbits that recognize the spike (S) protein, especially the receptor-binding domain (RBD) in the S1 region. The antisera from the immunized animals efficiently bound to the RBD and blocked binding of RBD to angiotensin-converting enzyme 2, the functional receptor on the susceptible cells for SARS-CoV. With a sensitive and quantitative single-cycle infection assay using pseudovirus bearing the SARS-CoV S protein, we demonstrated that mouse and rabbit antisera significantly inhibited S protein-mediated virus entry with mean 50% inhibitory titers of 1:7393 and 1:2060, respectively. These data suggest that the RBD of S protein is a major neutralization determinant in the inactivated SARS vaccine which can induce potent neutralizing antibodies to block SARS-CoV entry. However, caution should be taken in using the inactivated SARS-CoV as a vaccine since it may also cause harmful immune and/or inflammatory responses.
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DOI:
10.1016/j.bbrc.2004.01.076
发表时间:
2004-03-05
影响因子:
3.1
作者:
Wang P;Chen J;Zheng A;Nie Y;Shi X;Wang W;Wang G;Luo M;Liu H;Tan L;Song X;Wang Z;Yin X;Qu X;Wang X;Qing T;Ding M;Deng H
通讯作者:
Deng H
DOI:
10.1074/jbc.m400759200
发表时间:
2004-05-14
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Tripet B;Howard MW;Jobling M;Holmes RK;Holmes KV;Hodges RS
通讯作者:
Hodges RS
影响因子:
64.8
作者:
Li W;Moore MJ;Vasilieva N;Sui J;Wong SK;Berne MA;Somasundaran M;Sullivan JL;Luzuriaga K;Greenough TC;Choe H;Farzan M
通讯作者:
Farzan M
影响因子:
64.5
作者:
Dimitrov DS
通讯作者:
Dimitrov DS
DOI:
10.1016/s0140-6736(03)13077-2
发表时间:
2003-04-19
期刊:
Lancet (London, England)
影响因子:
--
作者:
Peiris JS;Lai ST;Poon LL;Guan Y;Yam LY;Lim W;Nicholls J;Yee WK;Yan WW;Cheung MT;Cheng VC;Chan KH;Tsang DN;Yung RW;Ng TK;Yuen KY;SARS study group
通讯作者:
SARS study group