Article ; Online: Cutting Edge: Hypoxia Sensing by the Histone Demethylase UTX (KDM6A) Limits Colitogenic CD4+ T Cells in Mucosal Inflammation.
Journal of immunology (Baltimore, Md. : 1950)
2024 Volume 212, Issue 7, Page(s) 1069–1074
Abstract: Hypoxia is a hallmark of inflammatory conditions (e.g., inflammatory bowel disease [IBD]), and adaptive responses have consequently evolved to protect against hypoxia-associated tissue injury. Because augmenting hypoxia-induced protective responses is a ... ...
Abstract | Hypoxia is a hallmark of inflammatory conditions (e.g., inflammatory bowel disease [IBD]), and adaptive responses have consequently evolved to protect against hypoxia-associated tissue injury. Because augmenting hypoxia-induced protective responses is a promising therapeutic approach for IBD, a more complete understanding of these pathways is needed. Recent work has demonstrated that the histone demethylase UTX is oxygen-sensitive, but its role in IBD is unclear. In this study, we show that hypoxia-induced deactivation of UTX downregulates T cell responses in mucosal inflammation. Hypoxia results in decreased T cell proinflammatory cytokine production and increased immunosuppressive regulatory T cells, and these findings are recapitulated by UTX deficiency. Hypoxia leads to T cell accumulation of H3K27me3 histone modifications, suggesting that hypoxia impairs UTX's histone demethylase activity to dampen T cell colitogenic activity. Finally, T cell-specific UTX deletion ameliorates colonic inflammation in an IBD mouse model, implicating UTX's oxygen-sensitive demethylase activity in counteracting hypoxic inflammation. |
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MeSH term(s) | Mice ; Animals ; CD4-Positive T-Lymphocytes/metabolism ; Histone Demethylases/metabolism ; Oxygen ; Hypoxia ; Inflammation ; Inflammatory Bowel Diseases |
Chemical Substances | Histone Demethylases (EC 1.14.11.-) ; Oxygen (S88TT14065) |
Language | English |
Publishing date | 2024-02-14 |
Publishing country | United States |
Document type | Journal Article |
ZDB-ID | 3056-9 |
ISSN | 1550-6606 ; 0022-1767 ; 1048-3233 ; 1047-7381 |
ISSN (online) | 1550-6606 |
ISSN | 0022-1767 ; 1048-3233 ; 1047-7381 |
DOI | 10.4049/jimmunol.2300550 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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