Targeting α4β7 integrin reduces mucosal transmission of simian immunodeficiency virus and protects gut-associated lymphoid tissue from infection.

Targeting α4β7 integrin reduces mucosal transmission of simian immunodeficiency virus and protects gut-associated lymphoid tissue from infection.
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靶向α4β7整联蛋白可减少猿猴免疫缺陷病毒的粘膜传播,并保护与肠道相关的淋巴组织免受感染。

DOI:
10.1038/nm.3715
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发表时间:
2014-12
期刊:
影响因子:
82.9
通讯作者:
--
中科院分区:
医学1区
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--
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表达 α4β7 整合素的 CD4+ T 细胞优先运输至肠道相关淋巴组织 (GALT),并在 HIV/SIV 发病机制中发挥关键作用。在急性感染期间施用抗 α4β7 单克隆抗体可保护猕猴在反复低剂量 SIVmac251 阴道内攻击后免受传播。在接受治疗的受感染动物中,GALT 受到显着保护,并且 CD4+ T 细胞数量得以维持。因此,针对 α4β7 可以减少猕猴中 SIV 的粘膜传播。
α4β7 integrin expressing CD4+ T cells preferentially traffic to gut-associated lymphoid tissues (GALT) and play a key role in HIV/SIV pathogenesis. The administration of an anti-α4β7 monoclonal antibody during acute infection protects macaques from transmission following repeated low-dose intra-vaginal challenges with SIVmac251. In treated animals that became infected the GALT was significantly protected and CD4+ T–cell numbers were maintained. Thus, targeting α4β7 reduces mucosal transmission of SIV in macaques.
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