Abstract

The cytosolic DNA-sensing cGAS-STING pathway was originally characterized as a key innate immune mediator responsible for the induction of antiviral genes in response to foreign DNA species in the cytosol. Mounting evidence, however, points to a complex role for cGAS and STING in cancer. Two recent reports, by Ranoa et al. (Cancer Research, 2018;https://doi.org/10.1158/0008-5472.CAN-18-1972) and Nassour et al. (Nature 2019;565:659-663), dissect the function of this pathway during the early steps of cellular transformation and shed light on the complexity and context-dependence of cGAS-STING signaling in cancer.

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