MiR-19a Mediates the Negative Regulation of the NF-κB Pathway in Lipopolysaccharide-induced Endometritis by Targeting TBK1

Overview

Journal Inflamm Res

Specialties Allergy & Immunology
Pathology

Date 2019 Jan 24

PMID 30673803

Citations 14

Authors

Nannan Yin

Yaping Yang

Xiaoyan Wang

Chao Yang

Xiaofei Ma

Aftab Shaukat

Gan Zhao

Ganzhen Deng

Affiliations

Soon will be listed here.

Abstract

Objective: In both humans and animals, endometritis is severe inflammation of the uterus, and it causes great economic losses in dairy cow production. MicroRNAs have been reported to play an important role in various inflammatory diseases. However, the regulatory mechanisms of miR-19a in endometritis remain unclear. Thus, the aims of this study are to investigate the role of miR-19a in a mouse model of lipopolysaccharide (LPS)-induced endometritis and elucidate the possible mechanisms in bovine endometrial epithelial cells (bEECs).

Methods And Results: Histological analysis showed that LPS induced severe pathological changes, suggesting that the endometritis mouse model was well established. The qPCR assay indicated that miR-19a expression in the uterine tissues of mice with endometritis and in bEECs with LPS stimulation was significantly reduced. The overexpression of miR-19a significantly decreased the expression of inflammatory cytokines (TNF-α, IL-6 and IL-1β) and the phosphorylation of NF-κB p65 and IκBα. Similar results were also obtained following the knockdown of TBK1. Furthermore, a dual luciferase reporter assay further validated that miR-19a inhibited TBK1 expression by binding directly to the 3'-UTR of TBK1.

Conclusion: We demonstrated that miR-19a has anti-inflammatory effects and mediates the negative regulation of the NF-κB Pathway in LPS-induced endometritis by targeting TBK1.

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