中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (29): 4349-4354.doi: 10.3969/j.issn.2095-4344.2016.29.013

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

间充质干细胞条件培养液对正常成纤维细胞及瘢痕成纤维细胞转化生长因子β产生和信号通路的影响

武  艳1,袁晓环1,杨  岚2,赵孝金1,李厚忠3,王  莹4,金  红5   

  1. 牡丹江医学院,1医药研究中心,3病理学教研室,4解剖学教研室,黑龙江省牡丹江市  157011;牡丹江医学院红旗医院,2眼科,5检验科,黑龙江省牡丹江市  157011
  • 收稿日期:2016-04-29 出版日期:2016-07-08 发布日期:2016-07-08
  • 通讯作者: 金红,博士,副教授,牡丹江医学院红旗医院检验科,黑龙江省牡丹江市 157011
  • 作者简介:武艳,女,1982年生,黑龙江省牡丹江市人,汉族,博士,讲师,主要从事组织损伤与修复方面的研究。
  • 基金资助:

    黑龙江省普通本科高等学校青年创新人才培养计划(UNPYSCT-2015109)

Effects of mesenchymal stem cells conditioned media on the transforming growth factor-beta signaling pathway in normal and hypertrophic scar fibroblasts

Wu Yan1, Yuan Xiao-huan1, Yang Lan2, Zhao Xiao-jin1, Li Hou-zhong3, Wang Ying4, Jin Hong5   

  1. 1Medical Research Center, 3Department of Pathology, 4Department of Anatomy, Mudanjiang Medical College, Mudanjiang 157011, Heilongjiang Province, China; 2Department of Ophthalmology, 5Clinical Laboratory, Hongqi Hospital, Mudanjiang Medical College, Mudanjiang 157011, Heilongjiang Province, China
  • Received:2016-04-29 Online:2016-07-08 Published:2016-07-08
  • Contact: Jin Hong, M.D., Associate professor, Clinical Laboratory, Hongqi Hospital, Mudanjiang Medical College, Mudanjiang 157011, Heilongjiang Province, China
  • About author:Wu Yan, M.D., Lecturer, Medical Research Center, Mudanjiang Medical College, Mudanjiang 157011, Heilongjiang Province, China
  • Supported by:

    Cultivation Program of Youth Innovative Talents in Heilongjiang Province Common University Undergraduate, No. UNPYSCT-2015109

摘要:

文章快速阅读:

文题释义:
转化生长因子β:是导致组织纤维化的重要因子,它可诱导细胞外基质堆积和胶原沉积,其主要机制:①转化生长因子β作用于胶原的转录和翻译过程,能诱导前胶原mRNA形成,从而促进胶原蛋白的沉积;②转化生长因子β可减少蛋白水解酶,并抑制其活性;③转化生长因子β促使成纤维细胞向肌成纤维细胞表型转化;④转化生长因子β也能促进成纤维细胞自身合成转化生长因子β。
间充质干细胞治疗皮肤创伤:间充质干细胞对于皮肤在创伤愈合过程中发挥其治疗作用,主要通过转分化为皮肤细胞、分泌生物活性因子、发挥免疫调节以及促进上皮和血管生成等,近年来研究人员对于间充质干细胞的作用机制逐渐转向其旁分泌作用。

摘要
背景:
已有文献报道,间充质干细胞可通过分泌大量生物活性因子有效减轻损伤的心脏、肺脏、肾脏等器官纤维化的发生。
目的:观察骨髓间充质干细胞条件培养液对正常成纤维细胞和瘢痕成纤维细胞的影响及作用机制。
方法:制备骨髓间充质干细胞条件培养液,将其作用于正常成纤维细胞和增生性瘢痕成纤维细胞,采用ELISA检测转化生长因子β的分泌水平,RT-PCR检测TGF-β/Smad信号通路相关基因Smad7的表达,比色法检测各组细胞上清液中羟脯氨酸的含量。
结果与结论:①骨髓间充质干细胞条件培养液对增生性瘢痕成纤维细胞转化生长因子β的分泌、胶原的合成有显著抑制作用(P < 0.01),并且明显增强Smad7基因的表达(P < 0.01);②骨髓间充质干细胞条件培养液对正常成纤维细胞的影响较小;③结果表明,骨髓间充质干细胞条件培养液对增生性瘢痕成纤维细胞具有显著抑制作用,为干细胞防治皮肤瘢痕提供基础理论支持。

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
ORCID: 0000-0001-9094-4184(金红)

关键词: 组织构建, 组织工程, 干细胞, 间质干细胞, 瘢痕, 成纤维细胞, 胶原, 细胞增殖, 羟脯氨酸

Abstract:

BACKGROUND: Numerous studies have shown that mesenchymal stem cells (MSCs) can effectively attenuate the fibrosis of damaged heart, lung and kidney by secreting various bioactive factors.
OBJECTIVE: To evaluate the anti-fibrotic therapeutic potential of bone marrow MSCs conditioned media in vitro.
METHODS: Normal fibroblasts and hypertrophic scar fibroblasts were treated with bone marrow MSCs conditioned media, then transforming growth factor-β and collagen production were analyzed by ELISA, and mRNA expression level of Smad7 and hydroxyproline content were detected by RT-PCR and colorimetry, respectively.
RESULTS AND CONCLUSION: Bone marrow MSCs conditioned media significantly inhibited the production of both transforming growth factor-β and collagen in hypertrophic scar fibroblasts (P < 0. 01), and up-regulated the mRNA expression level of Smad7 (P < 0. 01), a major inhibitory regulator in the SMAD family. However, the normal fibroblasts were scarcely influenced by bone marrow MSCs conditioned media. These findings indicate that bone marrow MSCs conditioned media is considered a promising candidate for the treatment of hypertrophic scars, which may provide new theoretical supports to reduce cutaneous scarring.

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

Key words: Mesenchymal Stem Cells, Cicatrix, Fibroblasts, Collagen, Cell Proliferation

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