中国组织工程研究 ›› 2025, Vol. 29 ›› Issue (2): 347-354.doi: 10.12307/2025.210

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

长链非编码RNA核富集转录本1对瘢痕成纤维细胞增殖、凋亡和迁移的影响

张彦峰,张慧敏,何  翔,郑屿萍   

  1. 上海中医药大学附属曙光医院皮肤科,上海市  201203

  • 收稿日期:2023-12-26 接受日期:2024-02-19 出版日期:2025-01-18 发布日期:2024-05-25
  • 通讯作者: 何翔,硕士,副主任医师,上海中医药大学附属曙光医院皮肤科,上海市 201203
  • 作者简介:张彦峰,男,1998年生,河南省原阳县人,汉族,上海中医药大学在读硕士,医师,主要从事皮肤与性病学方面的研究。
  • 基金资助:
    国家自然科学基金项目(81974570),项目负责人:张慧敏;上海市卫生健康委员会科研课题项目(202040190),项目负责人:何翔;上海市自然科学基金面上项目(21ZR1464000),项目负责人:何翔

Effects of long non-coding RNA nuclear enriched abundant transcript 1 on the proliferation, apoptosis and migration of keloid fibroblasts 

Zhang Yanfeng, Zhang Huimin, He Xiang, Zheng Yuping   

  1. Department of Dermatology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
  • Received:2023-12-26 Accepted:2024-02-19 Online:2025-01-18 Published:2024-05-25
  • Contact: He Xiang, Master, Associate chief physician, Department of Dermatology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
  • About author:Zhang Yanfeng, Master candidate, Physician, Department of Dermatology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
  • Supported by:
    the National Natural Science Foundation of China, No. 81974570 (to ZHM); Shanghai Municipal Health Commission Scientific Research Project, No. 202040190 (to HX); Shanghai Municipal Natural Science Foundation (General Program), No. 21ZR1464000 (to HX)

摘要:


文题释义:
长链非编码RNA:被定义为长度超过200个核苷酸且没有蛋白质编码能力的转录本,越来越多的研究表明,失调的长链非编码RNA通过调节许多过程在瘢痕疙瘩的形成中发挥重要作用。因此,长链非编码RNA可以作为瘢痕疙瘩的潜在诊断和治疗生物标志物。
miRNA:是一种非编码单链RNA,长度约为22个核苷酸,它可以结合数百个靶基因并调节其表达。大量研究证实,miRNA-mRNA轴通过调节细胞增殖、凋亡、迁移、侵袭和胶原合成来影响瘢痕疙瘩的发育。因此,在瘢痕疙瘩发展中起重要作用的miRNA可能成为治疗瘢痕疙瘩的新靶点。

背景:已有研究阐明核富集转录本1(nuclear enriched abundant transcript 1,NEAT1)下调抑制了瘢痕成纤维细胞的进展,但具体机制尚不完全清楚。
目的:探讨长链非编码RNA NEAT1调节miR-136-5p/泛素特异性蛋白酶4(ubiquitin specific protease 4,USP4)轴对瘢痕成纤维细胞生物学行为的影响。
方法:将瘢痕成纤维细胞分为5组:si-NC组、空白对照组、si-NEAT1组、si-NEAT1+miR-136-5p inhibitor组、si-NEAT1+inhibitor-NC组,qRT-PCR检测NEAT1、miR-136-5p表达;CCK-8法及EDU染色检测细胞增殖能力;流式细胞术检测细胞凋亡情况;划痕愈合实验检测细胞迁移情况;Western blot检测USP4、p27、Bax、基质金属蛋白酶9、α-平滑肌肌动蛋白、Ⅰ型胶原蛋白α1链蛋白表达;双荧光素酶实验检测NEAT1与miR-136-5p、miR-136-5p与USP4的关系。
结果与结论:①与si-NC组比较,si-NEAT1组NEAT1表达、A450值、EDU阳性细胞百分比、划痕愈合率以及USP4、基质金属蛋白酶9、α-平滑肌肌动蛋白、Ⅰ型胶原蛋白α1链蛋白表达降低(P < 0.05),miR-136-5p表达、细胞凋亡率及p27、Bax蛋白表达升高(P < 0.05);②miR-136-5p inhibitor逆转了沉默NEAT1对瘢痕成纤维细胞生物学行为的影响;③miR-136-5p与NEAT1、miR-136-5p与USP4存在靶向调控关系。结果表明,沉默NEAT1可能通过调控miR-136-5p/USP4轴抑制瘢痕成纤维细胞的增殖和迁移,诱导其凋亡。

https://orcid.org/0009-0000-4541-7473(张彦峰)
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: 长链非编码RNA核富集转录本1, miR-136-5p, 泛素特异性蛋白酶4, 瘢痕成纤维细胞, 增殖

Abstract: ACKGROUND: It has been elucidated that downregulation of nuclear enriched abundant transcript 1 (NEAT1) inhibits the progression of keloid fibroblasts, but the exact mechanism is not fully understood.
OBJECTIVE: To investigate the influences of long non-coding RNA nuclear enriched abundant transcript 1 (lncRNA NEAT1) on the proliferation, apoptosis and migration of keloid fibroblasts by regulating the miR-136-5p/ubiquitin-specific protease 4 (USP4) axis. 
METHODS: Keloid fibroblasts were divided into five groups: si-NC group, control check group, si-NEAT1 group, si-NEAT1+miR-136-5p inhibitor group, and         si-NEAT1+inhibitor-NC group. qRT-PCR was performed to measure the expressions of NEAT1 and miR-136-5p; cell counting kit-8 assay and EDU staining were performed to measure cell proliferation; flow cytometry was performed to measure apoptosis; scratch-healing experiment was performed to measure cell migration; western blot assay was performed to measure the protein expressions of USP4, p27, Bax, matrix metalloproteinase-9, α-smooth muscle actin, and type I collagen α1 chain; dual-luciferase assay was performed to examine the relationship of NEAT1 with miR-136-5p as well as the relationship of miR-136-5p with USP4. 
RESULTS AND CONCLUSION: Compared with the si-NC group, the NEAT1 expression, absorbance value at 450 nm, percentage of EDU positive cells, scratch-healing rate, the protein expressions of USP4, matrix metalloproteinase-9, α-smooth muscle actin, and type I collagen α1 chain decreased in the si-NEAT1 group (P < 0.05), while the expression of miR-136-5p, apoptosis rate, and the protein expressions of p27 and Bax increased (P < 0.05). miR-136-5p inhibitor reversed the effect of silencing NEAT1 on the biological behavior of keloid fibroblasts. There was a targeted regulatory relationship between NEAT1 and miR-136-5p as well as between miR-136-5p and USP4. To conclude, silencing NEAT1 may inhibit the proliferation and migration of keloid fibroblasts and induce apoptosis by regulating the miR-136-5p/USP4 axis.


Key words:  long non-coding RNA nuclear enriched abundant transcript 1, miR-136-5p, ubiquitin-specific protease 4, keloid fibroblast, proliferation

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