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科学研究
20191220 Innate Immune Response to Cytoplasmic DNA: Mechanisms and Diseases
发布时间:2019-12-21  来源:  阅读次数:

Hu, M.M.*, and Shu, H.B.*(2019). Innate Immune Response to Cytoplasmic DNA: Mechanisms and Diseases. Annual review of immunology.


Abstract

DNA has been known to be a potent immune stimulus for more than half a century. However, the underlying molecular mechanisms of DNA-triggered immune response have remained elusive until recent years. Cyclic GMP-AMP synthase (cGAS) is a major cytoplasmic DNA senor in various types of cells that detect either invaded foreign DNA or aberrantly located self-DNA. Upon sensing of DNA, cGAS catalyzes the formation of cyclic GMP-AMP (cGAMP), which in turn activates the ER-localized adaptor protein MITA (also named STING) to elicit the innate immune response. The cGAS-MITA axis not only plays a central role in host defense against pathogen-derived DNA but also acts as a cellular stress response pathway by sensing aberrantly located self-DNA, which is linked to the pathogenesis of various human diseases. In this review, we summarize the spatial and temporal mechanisms of host defense to cytoplasmic DNA mediated by the cGAS-MITA axis and discuss the association of malfunctions of this axis with autoimmune and other diseases.


原文链接见:https://www.annualreviews.org/doi/abs/10.1146/annurev-immunol-070119-115052

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