Pivotal roles of cGAS-cGAMP signaling in antiviral defense and immune adjuvant effects

Xiao Dong Li, Jiaxi Wu, Daxing Gao, Hua Wang, Lijun Sun, Zhijian J. Chen

Research output: Contribution to journalArticle

431 Scopus citations

Abstract

Invasion of microbial DNA into the cytoplasm of animal cells triggers a cascade of host immune reactions that help clear the infection; however, self DNA in the cytoplasm can cause autoimmune diseases. Biochemical approaches led to the identification of cyclic guanosine monophosphate - adenosine monophosphate (cGAMP) synthase (cGAS) as a cytosolic DNA sensor that triggers innate immune responses. Here, we show that cells from cGAS-deficient (cGas -/-) mice, including fibroblasts, macrophages, and dendritic cells, failed to produce type I interferons and other cytokines in response to DNA transfection or DNA virus infection. cGas-/- mice were more susceptible to lethal infection with herpes simplex virus 1 (HSV1) than wild-type mice. We also show that cGAMP is an adjuvant that boosts antigen-specific T cell activation and antibody production in mice.

Original languageEnglish (US)
Pages (from-to)1390-1394
Number of pages5
JournalScience
Volume341
Issue number6152
DOIs
StatePublished - Jan 1 2013

ASJC Scopus subject areas

  • General

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