CCR2 is a host entry receptor for severe fever with thrombocytopenia syndrome virus.

CCR2 is a host entry receptor for severe fever with thrombocytopenia syndrome virus.
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DOI:
10.1126/sciadv.adg6856
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发表时间:
2023-08-02
期刊:
影响因子:
13.6
通讯作者:
Liu, Wei
Liu, Wei
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Zhang, Leike;Peng, Xuefang;Wang, Qingxing;Li, Jin;Lv, Shouming;Han, Shuo;Zhang, Lingyu;Ding, Heng;Wang, Cong-Yi;Xiao, Gengfu;Du, Xuguang;Peng, Ke;Li, Hao;Liu, Wei

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严重发热伴血小板减少综合征病毒(SFTSV)是一种新出现的蜱传布尼亚病毒,致死率高达30%。迄今为止,介导SFTSV进入的受体仍然没有表征,阻碍了对疾病发病机制的理解。在此,基于全基因组CRISPR-Cas9筛选,C-C基序趋化因子受体2(CCR 2)被鉴定为SFTSV的宿主受体。CCR 2的敲除实质上减少了病毒结合和感染。CCR 2通过直接结合SFTSV糖蛋白N(Gn)增强SFTSV结合,这是由其N-末端胞外结构域介导的。C57 BL/6 J小鼠模型中CCR 2的消耗减弱了SFTSV的复制和发病机制。来自老年个体或患有基础糖尿病的受试者的外周血原代单核细胞显示出更高的CCR 2表面表达,并支持SFTSV更强的结合和复制。总之,这些数据表明CCR 2是SFTSV感染的宿主进入受体,并且是开发抗SFTSV治疗剂的新靶标。CCR 2介导SFTSV结合并促进病毒发病机制。
Severe fever with thrombocytopenia syndrome virus (SFTSV) is an emerging tick-borne bunyavirus causing a high fatality rate of up to 30%. To date, the receptor mediating SFTSV entry remained uncharacterized, hindering the understanding of disease pathogenesis. Here, C-C motif chemokine receptor 2 (CCR2) was identified as a host receptor for SFTSV based on a genome-wide CRISPR-Cas9 screen. Knockout of CCR2 substantially reduced viral binding and infection. CCR2 enhanced SFTSV binding through direct binding to SFTSV glycoprotein N (Gn), which is mediated by its N-terminal extracellular domain. Depletion of CCR2 in C57BL/6J mouse model attenuated SFTSV replication and pathogenesis. The peripheral blood primary monocytes from elderly individuals or subjects with underlying diabetes mellitus showed higher CCR2 surface expression and supported stronger binding and replication of SFTSV. Together, these data indicate that CCR2 is a host entry receptor for SFTSV infection and a novel target for developing anti-SFTSV therapeutics. CCR2 mediates SFTSV binding and promotes viral pathogenesis.
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