中国组织工程研究 ›› 2025, Vol. 29 ›› Issue (19): 4038-4043.doi: 10.12307/2025.080

• 干细胞培养与分化 stem cell culture and differentiation • 上一篇    下一篇

电刺激诱导miR-741-3p调控Radil促进施万细胞的迁移

刘  庆1,2,高  博1,杨  霄1,姜  宇2,王  培1   

  1. 1承德医学院附属医院,河北省承德市   067000;2承德医学院,河北省承德市   067000
  • 收稿日期:2024-02-08 接受日期:2024-05-10 出版日期:2025-07-08 发布日期:2024-09-13
  • 通讯作者: 王培,博士,主任医师,承德医学院附属医院,河北省承德市 067000
  • 作者简介:刘庆,男,1995年生,四川省遂宁市人,汉族,承德医学院在读硕士,主要从事手足显微外科、周围神经损伤修复的研究。
  • 基金资助:
    河北省科技厅指令性课题(142777105D),项目负责人:王培;河北省神经损伤与修复重点实验室(SZX2020020),项目参与人:刘庆,高博

Electrical stimulation induces miR-741-3p to regulate Radil and promote Schwann cell migration

Liu Qing1, 2, Gao Bo1, Yang Xiao1, Jiang Yu2, Wang Pei1   

  1. 1Affiliated Hospital of Chengde Medical University, Chengde 067000, Hebei Province, China; 2Chengde Medical University, Chengde 067000, Hebei Province, China
  • Received:2024-02-08 Accepted:2024-05-10 Online:2025-07-08 Published:2024-09-13
  • Contact: Wang Pei, MD, Chief physician, Affiliated Hospital of Chengde Medical University, Chengde 067000, Hebei Province, China
  • About author:Liu Qing, Master candidate, Affiliated Hospital of Chengde Medical University, Chengde 067000, Hebei Province, China; Chengde Medical University, Chengde 067000, Hebei Province, China
  • Supported by:
    Directive Project of Hebei Provincial Department of Science and Technology, No. 142777105D (to WP); Key Laboratory of Neurological Injury and Repair in Hebei Province, No. SZX2020020 (to LQ, GB)

摘要:

文题释义:

MicroRNA:是一类小的内源性非编码单链RNA,长度为19-25个核苷酸,通过识别靶基因mRNA的3’非翻译区中的互补靶点来抑制基因表达,一个miRNA可靶向多个mRNA。miRNA参与各种各样的调节途径,包括发育、病毒防御、器官形成、造血过程、细胞增殖和凋亡、脂肪代谢等。
施万细胞:由神经嵴前体细胞演化而来,是周围神经系统中的神经胶质细胞,为轴突提供支持,并且形成髓鞘。施万细胞功能极其活跃,可分泌多种活性物质(如神经营养因子、细胞外基质及黏附因子等),对神经纤维的存活、生长及再生具有重要意义。

摘要
背景:越来越多的动物实验和临床研究证实电刺激可以促进周围神经损伤修复,具体的机制尚未完全明确。
目的:探讨电刺激诱导miR-741-3p调控Radil对施万细胞迁移的影响。
方法:①12只雄性SD大鼠,随机分为电刺激组和对照组,电刺激组在坐骨神经挤压伤后连续电刺激7 d,对照组在坐骨神经挤压后不做任何处理。术后第7天取损伤处神经,利用荧光原位杂交技术检测两组miR-741-3p 的表达差异。②通过miRDB、TargetScan和miRWalk数据库预测miR-741-3p靶基因。③将miR-741-3p模拟物及其对照、miR-741-3p抑制物及其对照、Radil siRNA及其对照、miR-741-3p抑制物+Radil siRNA及miR-741-3p抑制物+siRNA对照对施万细胞进行转染,采用RT-PCR检测转染效率,Transwell小室检测施万细胞的迁移能力。

结果与结论:①电刺激组神经残端miR-741-3p荧光强度低于对照组;②数据库预测结果显示有69个基因可能是miR-741-3p靶基因,Radil是预测靶基因之一,主要参与细胞黏附和迁移;③与miR-741-3p抑制物对照组相比,miR-741-3p抑制物组施万细胞迁移数增多(P < 0.05);与miR-741-3p模拟物对照组相比,miR-741-3p模拟物组施万细胞迁移数减少(P < 0.05);与siRNA对照组相比,Radil siRNA组施万细胞迁移数减少(P < 0.05);④与miR-741-3p抑制物对照组相比,miR-741-3p抑制物组Radil的表达水平升高;与miR-741-3p模拟物对照组相比,miR-741-3p模拟物组Radil的表达水平降低;⑤与miR-741-3p抑制物+siRNA对照组相比,miR-741-3p抑制物+Radil siRNA组施万细胞迁移数减少(P < 0.05)。结果表明,电刺激通过下调miR-741-3p调控Radi的表达来促进施万细胞迁移。

https://orcid.org/0009-0003-6159-9774 (刘庆) 


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

关键词: 施万细胞, 电刺激, miR-741-3p, Radil, 细胞迁移, 神经再生

Abstract: BACKGROUND: More and more animal experiments and clinical studies have confirmed that electrical stimulation can promote the repair of peripheral nerve injury, but the specific mechanism is not yet fully understood.
OBJECTIVE: To investigate the effect of electrical stimulation-induced miR-741-3p regulating Radil on Schwann cell migration.
METHODS: (1) Twelve male SD rats were randomly divided into electrical stimulation group and control group. The electrical stimulation group received continuous electrical stimulation for 7 days after sciatic nerve compression injury, while the control group was not treated after sciatic nerve compression. The injured nerves were taken on day 7 after operation. The expression difference of miR-741-3p between the two groups was verified by fluorescence in situ hybridization. (2) The target genes of miR-741-3p were predicted by miRDB, TargetScan, and miRWalk databases. (3) Schwann cells were transfected with miR-741-3p mimetic and its control, miR-741-3p inhibitor and its control, Radil siRNA and its control, miR-741-3p inhibitor+Radil siRNA and miR-741-3p inhibitor+siRNA control. The transfection efficiency was detected by RT-PCR. The migration ability of Schwann cells was detected by Transwell chamber. 
RESULTS AND CONCLUSION: (1) The fluorescence intensity of miR-741-3p in the electrical stimulation group was lower than that in the control group. (2) The results of database prediction showed that 69 genes might be the target genes of miR-741-3p. Radil was one of the predicted target genes, which was mainly involved in cell adhesion and migration. (3) Compared with the miR-741-3p inhibitor control group, the number of Schwann cell migration increased in the miR-741-3p inhibitor group (P < 0.05). Compared with the miR-741-3p mimic control group, the number of Schwann cell migration in the miR-741-3p mimic group decreased (P < 0.05). Compared with the siRNA control group, the number of Schwann cell migration was decreased in the Radil siRNA group (P < 0.05). (4) Compared with miR-741-3p inhibitor control group, the expression level of Radil was increased in miR-741-3p inhibitor group. Compared with miR-741-3p mimic control group, the expression level of Radil was decreased in miR-741-3p mimic group. (5) Compared with miR-741-3p inhibitor+siRNA control group, the number of Schwann cell migration was reduced in miR-741-3p inhibitor+Radil siRNA group (P < 0.05). The results showed that electrical stimulation promoted the migration of Schwann cells by down-regulating miR-741-3p and targeting Radil gene.

Key words:  Schwann cell, electrical stimulation, miR-741-3p, Radil, cell migration, nerve regeneration

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