m6A mRNA modification maintains colonic epithelial cell homeostasis via NF-κB-mediated antiapoptotic pathway.
Sci Adv
; 8(12): eabl5723, 2022 03 25.
Article
en En
| MEDLINE
| ID: mdl-35333576
ABSTRACT
Colonic mucosal barrier dysfunction is one of the major causes of inflammatory bowel disease (IBD). However, the mechanisms underlying mucosal barrier dysfunction are poorly understood. N6-methyladenosine (m6A) mRNA modification is an important modulator of epitranscriptional regulation of gene expression, participating in multiple physiological and pathological processes. However, the function of m6A modification in colonic epithelial cells and stem cells is unknown. Here, we show that m6A modification is essential for maintaining the homeostatic self-renewal in colonic stem cells. Specific deletion of the methyltransferase 14 (Mettl14) gene in mouse colon resulted in colonic stem cell apoptosis, causing mucosal barrier dysfunction and severe colitis. Mechanistically, we revealed that Mettl14 restricted colonic epithelial cell death by regulating the stability of Nfkbia mRNA and modulating the NF-κB pathway. Our results identified a previously unidentified role for m6A modification in colonic epithelial cells and stem cells, suggesting that m6A modification may be a potential therapeutic target for IBD.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
FN-kappa B
/
Colon
Tipo de estudio:
Prognostic_studies
Límite:
Animals
Idioma:
En
Revista:
Sci Adv
Año:
2022
Tipo del documento:
Article
País de afiliación:
China