The Journal of experimental medicine · 2023
Interleukin-22 suppresses major histocompatibility complex II in mucosal epithelial cells.
СтатьяПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод пока не подготовлен
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Moniruzzaman Md, Rahman M Arifur, Wang Ran, Wong Kuan Yau, Chen Alice C-H, Mueller Alexandra, Taylor Steven, Harding Alexa, Illankoon Thishan, Wiid Percival, Sajiir Haressh, Schreiber Veronika, Burr Lucy D, McGuckin Michael A, Phipps Simon, Hasnain Sumaira Z
Аннотация
Major histocompatibility complex (MHC) II is dynamically expressed on mucosal epithelial cells and is induced in response to inflammation and parasitic infections, upon exposure to microbiota, and is increased in chronic inflammatory diseases. However, the regulation of epithelial cell-specific MHC II during homeostasis is yet to be explored. We discovered a novel role for IL-22 in suppressing epithelial cell MHC II partially via the regulation of endoplasmic reticulum (ER) stress, using animals lacking the interleukin-22-receptor (IL-22RA1), primary human and murine intestinal and respiratory organoids, and murine models of respiratory virus infection or with intestinal epithelial cell defects. IL-22 directly downregulated interferon-γ-induced MHC II on primary epithelial cells by modulating the expression of MHC II antigen A α (H2-Aα) and Class II transactivator (Ciita), a master regulator of MHC II gene expression. IL-22RA1-knockouts have significantly higher MHC II expression on mucosal epithelial cells. Thus, while IL-22-based therapeutics improve pathology in chronic disease, their use may increase susceptibility to viral infections.