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NATURE:清华大学/深圳第三人民医院发现SARS-CoV-2的人类中和抗体

2020-05-27 MedSci原创 MedSci原创

来自清华大学和深圳第三人民医院的张林琦,王新泉及张政团队报告了206个RBD特异性单克隆抗体的分离和表征。

冠状病毒SARS-CoV-2的全球大流行让我们迫切需要一个全球卫生紧急干预的措施。SARS-CoV-2进入靶细胞取决于病毒刺突蛋白的受体结合域(RBD)和ACE2细胞受体之间的结合。

最近,来自清华大学和深圳第三人民医院的张林琦,王新泉及张政团队报告了206个RBD特异性单克隆抗体的分离和表征,其分别来自于8个SARS-CoV-2感染者的单B细胞。

研究人员确定了具有潜在SARS-CoV-2中和活性的抗体,这与ACE2与RBD结合的竞争能力相关。令人惊讶的是,无论是抗SARS-CoV-2抗体还是感染的血浆都没有与SARS-CoV或MERS-CoV的RBDs发生交叉反应,尽管发现了大量的血浆对其三聚体刺突蛋白具有交叉反应。

对RBD结合的抗体的晶体结构分析发现了立体阻滞作用,抑制了病毒与ACE2的接触,从而阻断了病毒的进入。

这些发现表明,抗RBD抗体是病毒物种特异性抑制剂。这里确定的抗体可能是开发SARS-CoV-2临床干预措施的候选者。

 

原始出处:

Bin Ju et al. Human neutralizing antibodies elicited by SARS-CoV-2 infection. NATURE (2020). 

 

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    2020-07-15 liye789132251
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    2020-06-22 hukaixun
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    2020-05-28 小刀医生
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    2020-05-28 医生2397

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