Receptor-binding domain of SARS-CoV spike protein induces highly potent neutralizing antibodies: implication for developing subunit vaccine.

Receptor-binding domain of SARS-CoV spike protein induces highly potent neutralizing antibodies: implication for developing subunit vaccine.
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SARS-COV峰值蛋白的受体结合结构域可诱导高度有效的中和抗体:对开发亚基疫苗的影响。

DOI:
10.1016/j.bbrc.2004.09.106
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发表时间:
2004-11-12
影响因子:
3.1
通讯作者:
Jiang S
Jiang S
中科院分区:
生物学4区
文献类型:
--
作者:
He Y;Zhou Y;Liu S;Kou Z;Li W;Farzan M;Jiang S

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严重急性呼吸综合征(SARS)冠状病毒(CoV)刺突蛋白(S)是一种I型跨膜糖蛋白,由S1和S2结构域组成,分别负责病毒的结合和融合。S1含有受体结合结构域(RBD),可特异性结合靶细胞上的受体血管紧张素转换酶2(ACE 2)。在这里,我们表明,含有193个氨基酸的RBD(残基318-510)和人IgG 1 Fc片段的重组融合蛋白(命名为RBD-Fc)可以在免疫兔中诱导高度有效的抗体应答。该抗体识别S1结构域上的RBD,并在1:10,240的血清稀释度下完全抑制SARS-CoV感染。兔抗血清有效地阻断了含有RBD的S1与ACE 2的结合。这表明RBD能诱导高度有效的中和抗体应答,有可能成为一种有效、安全的SARS亚单位疫苗。
The spike (S) protein of severe acute respiratory syndrome (SARS) coronavirus (CoV), a type I transmembrane envelope glycoprotein, consists of S1 and S2 domains responsible for virus binding and fusion, respectively. The S1 contains a receptor-binding domain (RBD) that can specifically bind to angiotensin-converting enzyme 2 (ACE2), the receptor on target cells. Here we show that a recombinant fusion protein (designated RBD-Fc) containing 193-amino acid RBD (residues 318–510) and a human IgG1 Fc fragment can induce highly potent antibody responses in the immunized rabbits. The antibodies recognized RBD on S1 domain and completely inhibited SARS-CoV infection at a serum dilution of 1:10,240. Rabbit antisera effectively blocked binding of S1, which contains RBD, to ACE2. This suggests that RBD can induce highly potent neutralizing antibody responses and has potential to be developed as an effective and safe subunit vaccine for prevention of SARS.
DOI: 10.1038/nature02145
发表时间: 2003-11-27
期刊: Nature
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
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发表时间: 2003-12-12
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影响因子: 64.5
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DOI: 10.1016/j.bbrc.2003.11.180
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影响因子: 3.1
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DOI: 10.1128/jvi.66.11.6695-6705.1992
发表时间: 1992-11-01
影响因子: 5.4
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通讯作者: SCOTT, FW
DOI: 10.1128/jvi.78.9.4552-4560.2004
发表时间: 2004-05-01
影响因子: 5.4
作者:
Babcock, GJ;Esshaki, DJ;Ambrosino, DM
通讯作者: Ambrosino, DM