IFI16 DNA sensor is required for death of lymphoid CD4 T cells abortively infected with HIV.
IFI16 DNA sensor is required for death of lymphoid CD4 T cells abortively infected with HIV.
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DOI:
10.1126/science.1243640
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发表时间:
2014-01-24
期刊:
影响因子:
--
通讯作者:
Greene WC
中科院分区:
文献类型:
--
作者:
Monroe KM;Yang Z;Johnson JR;Geng X;Doitsh G;Krogan NJ;Greene WC
The progressive depletion of quiescent “bystander” CD4 T-cells, which are non-permissive to HIV infection, is a principal driver of the acquired immunodeficiency syndrome (AIDS). These cells undergo abortive infection characterized by the cytosolic accumulation of incomplete HIV reverse transcripts. These viral DNAs are sensed by an unidentified host sensor that triggers an innate immune response, leading to caspase-1 activation and pyroptosis. Using unbiased proteomic and targeted biochemical approaches as well as two independent methods of lentiviral shRNA-mediated gene knockdown in primary CD4 T-cells, we identify Interferon gamma Inducible protein 16 (IFI16) as a host DNA sensor required for CD4 T-cell death due to abortive HIV infection. These findings provide insights into a key host pathway that plays a central role in CD4 T-cell depletion during disease progression to AIDS.
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