https://doi.org/10.4081/ejh.2022.3316

Effects of miR-939 and miR-376A on ulcerative colitis using a decoy strategy to inhibit NF-κB and NFAT expression

Vol. 66 No. 1 (2022)
Submitted: 8 August 2021
Accepted: 9 December 2021
Published: 15 February 2022
miR-939, miR-376A, NF-κB, NFAT, decoy strategy, ulcerative colitis
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Authors

Yongwei Lin
Department of General Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
Zhipeng Zhou
Department of General Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
Lang Xie
Department of General Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
Yongsheng Huang
Department of General Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
Zhenghua Qiu
Department of General Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
Lili Ye
Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
Chunhui Cui
drcuich@163.com
https://orcid.org/0000-0001-7338-519X
Department of General Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.

The aim of this study was to explore the effects of miR-939 and miR-376A on the pathogenesis of ulcerative colitis (UC) by using a decoy strategy to regulate the expression of nuclear transcription factor kappa B (NF-κB) and nuclear factor of activated T cells (NFAT). Such strategies represent a potential novel treatment for UC. Quantitative polymerase chain reaction (qPCR) analysis was used to detect the differences between the expression of miR-939, miR-376a, NF-κB, NFAT in the tissue samples from the resting and active stages of UC and healthy controls, and analyzed the correlation. The electrophoretic mobility shift assay was used to validate the ability of miRNAs to bind to NF-κB and NFAT. The expression of components of the intestinal barrier in UC and changes in apoptosis-related factors were examined by western blotting, qPCR, and immunofluorescence. After a dextran sulfate sodium (DSS)-induced mouse model of UC was established, the morphological changes in the colonic tissues of mice, the changes in serum inflammatory factors, and the changes in urine protein or urine leukocytes, liver enzymes, and prothrombin time were measured to examine intestinal permeability. The expression of miR-939 and miR-376a in human UC tissue was significantly lower than that in the normal control tissue, and was negatively correlated with the expression of NF-κB and NFAT. miR-939 and miR-376a decoy strategies resulted in a beneficial increase in the expression of claudins, occludins, and ZO-1 protein and inhibited apoptosis in intestinal epithelial cells. The disease activity index of the UC model group was significantly higher than that of the normal control group. The expression of inflammatory factors in the decoy group was higher than that in the UC model group. Therefore, from the experimental results, it can be concluded that using miR-939 and miR-376a to trap NF-κB and NFAT inhibits the activation of transcription factors NF-κB and NFAT, which in turn inhibits the expression of inflammatory factors and results in partial recovery of the intestinal barrier in UC. The decoy strategy inhibited apoptosis in the target cells and had a therapeutic effect in the mice model of UC. This study provides new ideas for the development of future clinical therapies for UC.

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How to Cite

Lin, Y., Zhou, Z., Xie, L., Huang, Y., Qiu, Z., Ye, L., & Cui, C. (2022). Effects of miR-939 and miR-376A on ulcerative colitis using a decoy strategy to inhibit NF-κB and NFAT expression. European Journal of Histochemistry, 66(1). https://doi.org/10.4081/ejh.2022.3316
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