γ-Secretase fanning the fire of innate immunity.

Biochem Soc Trans

Chemical Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY, U.S.A.

Published: August 2023

Innate immunity is the first line of defense against pathogens, alerting the individual cell and surrounding area to respond to this potential invasion. γ-secretase is a transmembrane protease complex that plays an intricate role in nearly every stage of this innate immune response. Through regulation of pattern recognition receptors (PRR) such as TREM2 and RAGE γ-secretase can modulate pathogen recognition. γ-secretase can act on cytokine receptors such as IFNαR2 and CSF1R to dampen their signaling capacity. While γ-secretase-mediated regulated intramembrane proteolysis (RIP) can further moderate innate immune responses through downstream signaling pathways. Furthermore, γ-secretase has also been shown to be regulated by the innate immune system through cytokine signaling and γ-secretase modulatory proteins such as IFITM3 and Hif-1α. This review article gives an overview of how γ-secretase is implicated in innate immunity and the maintenance of its responses through potentially positive and negative feedback loops.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11212119PMC
http://dx.doi.org/10.1042/BST20221445DOI Listing

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