4.5 Article

Overexpression of miR-378 Alleviates Chronic Sciatic Nerve Injury by Targeting EZH2

期刊

NEUROCHEMICAL RESEARCH
卷 46, 期 12, 页码 3213-3221

出版社

SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s11064-021-03424-9

关键词

Neuropathic pain; miR-378; EZH2

资金

  1. National Natural Science Foundation of China [81772044]

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In this study, miR-378 was found to be down-regulated in a chronic sciatic nerve injury (CCI) rat model, while its overexpression provided significant relief in pain management. EZH2 was identified as a downstream target of miR-378, and the up-regulation of EZH2 reduced the inhibitory effects of miR-378 on neuropathic pain development. The miR-378/EZH2 axis may serve as a novel therapeutic target for neuropathic pain in clinical treatment.
In numerous studies, microRNAs (miRNAs) have been authenticated to play vital roles in the pathophysiology of neuropathic pain and other neurological diseases. In our study, we focused on evaluating miR-378 and its potential effects in neuropathic pain development, as well as the underlying molecular mechanisms. Primarily, a chronic sciatic nerve injury (CCI) rat model was established. Next, reverse transcription-quantitative polymerase chain reaction (RT-qPCR) was employed to measure the expression levels of miR-378 and EZH2 mRNA; the EZH2 protein expression levels were detected by western blot. A luciferase activity assay monitored the interaction of miR-378 and EZH2. Mechanical and thermal hyperalgesia was also performed to quantitate the effects of overexpression of miR-378 or EZH2 on the CCI rats. We found that miR-378 was down-regulated in the CCI rats, and the overexpression of miR-378 produced significant relief in their pain management. EZH2 was the downstream gene of miR-378 and was negatively regulated by miR-378. The up-regulation of EZH2 reduced the inhibitory effects of miR-378 on the development of neuropathic pain in the CCI rats. miR-378 acts as an inhibitor in the progression of neuropathic pain via targeting EZH2; the miR-378/EZH2 axis may be a novel target for the diagnosis and therapy of neuropathic pain in clinical treatment.

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