Lineberger Comprehensive Cancer Center.
J Infect Dis. 2014 Apr 1;209(7):1039-44. doi: 10.1093/infdis/jit548. Epub 2013 Oct 16.
Human immunodeficiency virus type 1 (HIV-1) disease is associated with aberrant immune activation, and coinfection with hepatitis C virus (HCV) exacerbates hepatic inflammation and fibrosis. However, the role of HIV-1 infection or host immune modulation in liver pathogenesis is not clearly defined. Here, we report that regulatory T (Treg) cells prevent liver immunopathogenesis during HIV-1 infection in a humanized mouse model. In the absence of Treg cells, HIV-1 infection induced liver fibrosis associated with hepatic stellate cell activation, hepatitis, and liver injury. Our findings provide new insight linking Treg cells and liver immunopathogenesis during HIV-1 infection.
人类免疫缺陷病毒 1 型(HIV-1)疾病与异常免疫激活有关,而丙型肝炎病毒(HCV)的合并感染会加剧肝脏炎症和纤维化。然而,HIV-1 感染或宿主免疫调节在肝脏发病机制中的作用尚不清楚。在这里,我们报告调节性 T(Treg)细胞在人源化小鼠模型中防止 HIV-1 感染时的肝脏免疫发病机制。在没有 Treg 细胞的情况下,HIV-1 感染会引起肝纤维化,伴有肝星状细胞激活、肝炎和肝损伤。我们的发现为 HIV-1 感染期间 Treg 细胞与肝脏免疫发病机制之间的联系提供了新的见解。