Cell-permeable JNK-inhibitory peptide regulates intestinal barrier function and inflammation to ameliorate necrotizing enterocolitis.

ABSTRACT: Intestinal dysbiosis is believed to play a role in the development of necrotizing enterocolitis (NEC). The efficacy of JNK-inhibitory peptide (CPJIP) in treating NEC was assessed. Treatment with CPJIP led to a notable reduction in p-JNK expression in IEC-6 cells and NEC mice. Following LPS stimulation, the expression of RNA and protein of claudin-1, claudin-3, claudin-4 and occludin was significantly decreased, with this decrease being reversed by CPJIP administration, except for claudin-3, which remained consistent in NEC mice. Moreover, the expression levels of the inflammatory factors TNF-α, IL-1β and IL-6 were markedly elevated, a phenomenon that was effectively mitigated by the addition of CPJIP in both IEC-6 cells and NEC mice. CPJIP administration resulted in improved survival rates

SUBMITTER: Bu C 

PROVIDER: S-EPMC11258882 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature