Phospholipase A2 inhibitor and LY6/PLAUR domaincontaining protein PINLYP regulates type I interferon innate immunity.

Autor: Zhongshun Liu, Congwei Jiang, Zhangmengxue Lei, Sihan Dong, Linlin Kuang, Chenxu Huang, Ying Gao, Mu Liu, Hui Xiao, Legembre, Patrick, Jung, Jae U., Huaping Liang, Xiaozhen Liang
Předmět:
Zdroj: Proceedings of the National Academy of Sciences of the United States of America; 1/4/2022, Vol. 119 Issue 1, p1-10, 10p
Abstrakt: Type I interferons (IFNs) are the first frontline of the host innate immune response against invading pathogens. Herein, we characterized an unknown protein encoded by phospholipase A2 inhibitor and LY6/PLAUR domain-containing (PINLYP) gene that interacted with TBK1 and induced type I IFN in a TBK1- and IRF3-dependent manner. Loss of PINLYP impaired the activation of IRF3 and production of IFN-ß induced by DNA virus, RNA virus, and various Toll-like receptor ligands in multiple cell types. Because PINLYP deficiency in mice engendered an early embryonic lethality in mice, we generated a conditional mouse in which PINLYP was depleted in dendritic cells. Mice lacking PINLYP in dendritic cells were defective in type I IFN induction and more susceptible to lethal virus infection. Thus, PINLYP is a positive regulator of type I IFN innate immunity and important for effective host defense against viral infection. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index