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标题：RIG-I–like receptor LGP2 protects tumor cells from ionizing radiation
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作者：Ryan C. Widau ; Akash D. Parekh ; Mark C. Ranck 等
期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：2014
卷号：111
期号：4
页码：E484-E491
DOI：10.1073/pnas.1323253111
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：An siRNA screen targeting 89 IFN stimulated genes in 14 different cancer cell lines pointed to the RIG-I (retinoic acid inducible gene I)-like receptor Laboratory of Genetics and Physiology 2 (LGP2) as playing a key role in conferring tumor cell survival following cytotoxic stress induced by ionizing radiation (IR). Studies on the role of LGP2 revealed the following: (i) Depletion of LGP2 in three cancer cell lines resulted in a significant increase in cell death following IR, (ii) ectopic expression of LGP2 in cells increased resistance to IR, and (iii) IR enhanced LGP2 expression in three cell lines tested. Studies designed to define the mechanism by which LGP2 acts point to its role in regulation of IFN{beta}. Specifically (i) suppression of LGP2 leads to enhanced IFN{beta
关键词：innate immunity ; cytoplasmic sensor ; interferon beta ; DHX58