STAG2 deficiency induces interferon responses via cGAS-STING pathway and restricts virus infection.

STAG2 deficiency induces interferon responses via cGAS-STING pathway and restricts virus infection.
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DOI:
10.1038/s41467-018-03782-z
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发表时间:
2018-04-16
影响因子:
16.6
通讯作者:
Greenberg HB
Greenberg HB
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Ding S;Diep J;Feng N;Ren L;Li B;Ooi YS;Wang X;Brulois KF;Yasukawa LL;Li X;Kuo CJ;Solomon DA;Carette JE;Greenberg HB

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Cohesin is a multi-subunit nuclear protein complex that coordinates sister chromatid separation during cell division. Highly frequent somatic mutations in genes encoding core cohesin subunits have been reported in multiple cancer types. Here, using a genome-wide CRISPR-Cas9 screening approach to identify host dependency factors and novel innate immune regulators of rotavirus (RV) infection, we demonstrate that the loss of STAG2, an important component of the cohesin complex, confers resistance to RV replication in cell culture and human intestinal enteroids. Mechanistically, STAG2 deficiency results in spontaneous genomic DNA damage and robust interferon (IFN) expression via the cGAS-STING cytosolic DNA-sensing pathway. The resultant activation of JAK-STAT signaling and IFN-stimulated gene (ISG) expression broadly protects against virus infections, including RVs. Our work highlights a previously undocumented role of the cohesin complex in regulating IFN homeostasis and identifies new therapeutic avenues for manipulating the innate immunity. Cohesin is a multimeric nuclear protein complex which includes STAG2 and is associated with vital roles during cell division. Here in a genome-wide CRISPR-Cas9 screen, the authors identify a novel role of STAG2 as a crucial component of the innate immune response to rotavirus.
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