作者
Hisashi Akiyama, Caitlin M Miller, Chelsea R Ettinger, Anna C Belkina, Jennifer E Snyder-Cappione, Suryaram Gummuluru
发表日期
2018/8/27
期刊
Nature communications
卷号
9
期号
1
页码范围
3450
出版商
Nature Publishing Group UK
简介
Low levels of type I interferon (IFN-I) are thought to be a driving force for immune activation and T-cell exhaustion in HIV-1 infected individuals on combination antiretroviral therapy (cART), though the causative mechanisms for persistent IFN-I signaling have remained unclear. Here, we show Rev–CRM1-dependent nuclear export and peripheral membrane association of intron-containing HIV-1 RNA, independent of primary viral sequence or viral protein expression, is subject to sensing and signaling via MAVS, resulting in IFN-I-dependent pro-inflammatory responses in macrophages. Additionally, HIV-1 intron-containing-RNA-induced innate immune activation of macrophages leads to upregulation of inhibitory receptor expression and functional immune exhaustion of co-cultured T cells. Our findings suggest that persistent expression of HIV-1 intron-containing RNA in macrophages contributes to chronic immune …
引用总数
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