中国组织工程研究 ›› 2023, Vol. 27 ›› Issue (28): 4480-4486.doi: 10.12307/2023.562

• 皮肤粘膜组织构建 skin and mucosal tissue construction • 上一篇    下一篇

miR-2116-3p在人增生性瘢痕中的表达及作用

田文融,左  俊,余  扬,齐郁松,艾  江,卜盼盼,赵皎均,马志伟,李培培,马少林   

  1. 新疆医科大学第一附属医院,新疆维吾尔自治区乌鲁木齐市  830011
  • 收稿日期:2022-08-01 接受日期:2022-08-27 出版日期:2023-10-08 发布日期:2023-01-29
  • 通讯作者: 马少林,主任医师,教授,新疆医科大学第一附属医院,新疆维吾尔自治区乌鲁木齐市 830011
  • 作者简介:田文融,女,1999年生,汉族,硕士,医师,主要从事增生性瘢痕的形成机制与防治研究。
  • 基金资助:
    国家自然科学基金(81760345):中医药提取物总黄酮抑制增生性瘢痕TGF-β1激活下游MAPK与Smad信号通路调控机制研究,项目负责人:马少林;新疆维吾尔自治区科研创新项目基金(XJ2919G202):肉苁蓉苯乙醇总苷对人增生性瘢痕成纤维细胞基于TGF-β/Smad信号通路的机制研究,项目负责人:艾江;新疆维吾尔自治区科研创新项目基金(XJ2022G174):miRNA在人增生性瘢痕中的表达及作用,项目负责人:田文融

Expression and effect of microRNA-2116-3p in human hypertrophic scar

Tian Wenrong, Zuo Jun, Yu Yang, Qi Yusong, Ai Jiang, Bu Panpan, Zhao Jiaojun, Ma Zhiwei, Li Peipei, Ma Shaolin   

  1. Department of Plastic Surgery, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, Xinjiang Uygur Autonomous Region, China
  • Received:2022-08-01 Accepted:2022-08-27 Online:2023-10-08 Published:2023-01-29
  • Contact: Ma Shaolin, Chief physician, Professor, Department of Plastic Surgery, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, Xinjiang Uygur Autonomous Region, China
  • About author:Tian Wenrong, Master, Physician, Department of Plastic Surgery, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, Xinjiang Uygur Autonomous Region, China
  • Supported by:
    National Natural Science Foundation of China, No. 81760345 (to MSL); Scientific Research and Innovation Projects of Xinjiang Uygur Autonomous Region, Nos. XJ2919G202 (to AJ) and XJ2022G174 (to TWR)

摘要:

文题释义:

miRNA:是一种小片段的非编码RNA,能够通过与目的基因靶向结合进而调控其基因表达,并产生相应生物学表现。
增生性瘢痕:是真皮或深部组织损伤或病变后,由新生结缔组织过度增生修复而成的一种皮损。增生性瘢痕多见于创伤、溃疡和局部炎症病变引起的深达真皮层的创面愈合之后,是人体创伤或炎症愈合过程的产物,临床表现为局部隆起的粉红色或紫红色肿块,表面充血、质地偏硬、边缘不突向正常皮肤,伴痒痛症状,治疗上以综合治疗为主。

背景:目前多项研究证实了miRNA影响增生性瘢痕的发生发展,Ⅰ型胶原与增生性瘢痕成纤维细胞密切相关,猜测miR-2116-3p也有可能与增生性瘢痕的发生发展有关系。
目的:探讨miR-2116-3p在人增生性瘢痕中的表达及作用。
方法:收集新疆医科大学第一附属医院6例患者的增生性瘢痕组织与6例患者重睑术后正常皮肤组织,采用qRT-PCR法检测miR-2116-3p与Ⅰ型胶原的表达。取增生性瘢痕组织,原代培养第3-6代成纤维细胞,分为阴性对照组、miR-2116-3p模拟物组和miR-2116-3p抑制物组,分别转染对应的序列,用CCK-8法与EdU试剂盒检测细胞增殖活力,划痕实验检测细胞迁移能力,流式细胞术检测细胞凋亡,qRT-PCR法与Western blot法检测Ⅰ型胶原、Ⅲ型胶原和α平滑肌肌动蛋白的基因与蛋白表达,双荧光素酶实验验证其靶向结合。 
结果与结论:①增生性瘢痕组织中miR-2116-3p的mRNA表达量低于正常皮肤组织(P < 0.01),Ⅰ型胶原的mRNA表达量低于正常皮肤组织

(P < 0.01);②转染后24,48,72 h,与阴性对照组比较,miR-2116-3p模拟物组细胞活力降低(P < 0.05或P < 0.01),miR-2116-3p抑制物组细胞活力升高(P < 0.05或P < 0.01);转染后48 h,与阴性对照组比较,miR-2116-3p模拟物组细胞EdU标记数减少(P < 0.01),miR-2116-3p抑制物组EdU标记数增加(P < 0.05);③转染后24 h,与阴性对照组比较,miR-2116-3p模拟物组细胞划痕面积、细胞凋亡率增加(P < 0.01),miR-2116-3p抑制物组细胞划痕面积、细胞凋亡率减少(P < 0.01或P < 0.05);④转染后24 h,与阴性对照组比较,miR-2116-3p模拟物组Ⅰ型胶原、Ⅲ型胶原和α-平滑肌肌动蛋白的基因与蛋白表达下降(P < 0.05或P < 0.01),miR-2116-3p抑制物组Ⅰ型胶原、Ⅲ型胶原和α-平滑肌肌动蛋白的蛋白表达升高(P < 0.01);⑤双荧光素酶实验显示,miR-2116-3p能够与Ⅰ型胶原靶向结合;⑥结果表明,人增生性瘢痕中miR-2116-3p表达下调,miR-2116-3p可能通过靶向抑制Ⅰ型胶原的表达抑制人增生性瘢痕成纤维细胞的增殖、迁移,促进其凋亡。

https://orcid.org/0000-0003-2108-4541(田文融)

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松;组织工程

关键词: miR-2116-3p, Ⅰ型胶原, 增生性瘢痕, 成纤维细胞, 皮肤纤维化

Abstract: BACKGROUND: A wide range of studies have demonstrated that microRNA (miR) plays a crucial role in hypertrophic scars development, and type I collagen is closely related to hypertrophic scar fibroblasts. There might be a relationship between miR-2116-3p and occurrence and development of hypertrophic scars.
OBJECTIVE: To investigate the expression and role of miR-2116-3p on human hypertrophic scar fibroblasts.
METHODS: Hypertrophic scar tissues were collected from six patients from the First Affiliated Hospital of Xinjiang Medical University and normal skin tissues were collected from another six patients after blepharoplasty in the same unit at the same time. The expression of miR-2116-3p and type I collagen was detected by qRT-PCR. Hypertrophic scar tissues were taken and primary cells were cultured to passages 3 to 6. Hypertrophic scar fibroblasts were divided into negative control group, miR-2116-3p mimic group, and miR-2116-3p inhibitor group, and transfected with corresponding sequences. Cell proliferation was detected by cell counting kit-8 and EdU kit. Cell migration was detected by cell scratch assay, and apoptosis was detected by flow cytometry. Expression of type I collagen, type III collagen and α-smooth muscle actin was detected by western blot and qRT-PCR at protein and mRNA levels, respectively. Dual luciferase reporter assay system was used to carry out targeting assays.
RESULTS AND CONCLUSION: The mRNA expression of miR-2116-3p and type I collagen in hypertrophic scar tissues was significantly lower than that in normal skin tissues (P < 0.01). After 24, 48, and 72 hours of transfection, the cell viability of the miR-2116-3p mimic group was significantly lower than that of the negative control group (P < 0.05 or P < 0.01), while the cell viability of miR-2116-3p inhibitor group was significantly higher than that of the negative control group (P < 0.05 or P < 0.01). At 48 hours after transfection, the number of EdU positive cells in the miR-2116-3p mimic group was significantly lower than that in the negative control group, while the number of EdU positive cells in the miR-2116-3p inhibitor group was significantly higher than that in the negative control group (P < 0.05). At 24 hours after transfection, the cell scratch area and apoptotic rate of the miR-2116-3p mimic group were significantly higher than those of the negative control group (P < 0.01), and while the cell scratch area and apoptotic rate of the miR-2116-3p inhibitor group werer significantly lower than those of the negative control group (P < 0.01 or P < 0.05). At 24 hours after transfection, the mRMA and protein expression levels of type I collagen, type II collagen and α-smooth muscle actin were significantly decreased in the miR-2116-3p mimic group (P < 0.05 or P < 0.01) and significantly increased in the miR-2116-3p inhibitor group (P < 0.01) compared with the negative control group. Results from the dual luciferase assay showed that miR-2116-3p could bind to type I collagen. To conclude, the expression of miR-2116-3p is down-regulated in human hypertrophic scar. miR-2116-3p may inhibit the proliferation and migration of human hypertrophic scar fibroblasts and promote their apoptosis by targeting the expression of type I collagen.

Key words: miR-2116-3p, type I collagen, hypertrophic scar, fibroblast, skin fibrosis

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