中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (1): 61-67.doi: 10.3969/j.issn.2095-4344.0694

• 脂肪干细胞 adipose-derived stem cells • 上一篇    下一篇

脂肪来源干细胞对瘢痕疙瘩成纤维细胞增殖影响的分子机制

李 响1,吴志贤1,刘宏伟2,梁 杰1,莫自增1   

  1. 1广东医科大学附属医院整形外科,广东省湛江市 524001;2暨南大学附属第一医院整形外科,广东省广州市 510630
  • 修回日期:2018-08-03 出版日期:2019-01-08 发布日期:2018-11-28
  • 通讯作者: 梁杰,硕士,教授,硕士生导师,广东医学大学附属医院整形外科,广东省湛江市 524001
  • 作者简介:李响,女,1981年生,吉林省吉林市人,汉族,2018年暨南大学毕业,博士,主治医师,主要从事瘢痕治疗、自体脂肪移植研究。
  • 基金资助:

    国家自然科学基金项目(81372065),项目负责人:刘宏伟

Molecular mechanism underlying the effect of adipose-derived stem cells on the proliferation of keloid fibroblasts

Li Xiang1, Wu Zhixian1, Liu Hongwei2, Liang Jie1, Mo Zizeng1   

  1. 1Department of Plastic Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, Guangdong Province, China; 2Department of Plastic Surgery, First Affiliated Hospital of Jinan University, Guangzhou 510630, Guangdong Province, China
  • Revised:2018-08-03 Online:2019-01-08 Published:2018-11-28
  • Contact: Liang Jie, Master, Professor, Master’s supervisor, Department of Plastic Surgery, First Affiliated Hospital of Jinan University, Guangzhou 510630, Guangdong Province, China
  • About author:Li Xiang, MD, Attending physician, Department of Plastic Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, Guangdong Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81372065 (to LHW)

摘要:

文章快速阅读:

文题释义:
脂肪来源干细胞:
是从脂肪组织中分离得到具有多向分化潜能和干细胞免疫表型的细胞,如CD44和CD90呈阳性表达,CD45呈阴性表达。脂肪来源干细胞通过多种调节机制,包括分泌促进血管再生和皮肤细胞再分化的细胞因子,分泌抗纤维化细胞因子和生长因子等,在皮肤伤口愈合中发挥治疗作用。
瘢痕疙瘩成纤维细胞:瘢痕疙瘩是皮肤伤口愈合或不明原因所致皮肤损伤愈合后所形成的过度生长的异常瘢痕组织。瘢痕疙瘩成纤维细胞是创伤愈合过程中的主要效应细胞,瘢痕疙瘩成纤维细胞的迁移、增殖、分泌胶原及凋亡等生物学行为参与皮肤损伤后的创面修复。因此,通过抑制瘢痕疙瘩成纤维细胞的迁移和增殖,对于抑制增生性瘢痕形成具有重要的临床意义。

 

摘要
背景:
脂肪来源干细胞已广泛用于组织填充修复,但是其对皮肤瘢痕抑制和修复的作用机制还不清楚。
目的:探讨脂肪来源干细胞对瘢痕疙瘩成纤维细胞生物活性的影响及分子机制。  
方法:取第3代人脂肪来源干细胞,分别以0,3×104,6×104,1.2×105/孔接种于Transwell小室的上室(0为对照组,只含细胞培养液),取第4代对数生长期的瘢痕疙瘩成纤维细胞,以6×104/孔接种于下室(脂肪干细胞与瘢痕疙瘩成纤维细胞比例分别为0.5∶1,1∶1和2∶1),进行人脂肪来源干细胞与瘢痕疙瘩成纤维细胞共培养,培养24 h取下室瘢痕疙瘩成纤维细胞进行相关指标检测。
结果与结论:①人脂肪来源干细胞能够显著抑制瘢痕疙瘩成纤维细胞的增殖、迁移和胶原合成能力,并且随着脂肪干细胞所占比例的升高,抑制作用显著增强;②人脂肪来源干细胞能够显著促进瘢痕疙瘩成纤维细胞凋亡,并且随着脂肪干细胞所占比例的升高,促进作用显著增强;③Western blot 检测显示人脂肪来源干细胞能够显著抑制瘢痕疙瘩成纤维细胞p-ERK、Bcl-2和β-catenin 蛋白表达;④结果表明,脂肪来源干细胞通过抑制ERK/β-catenin通路抑制瘢痕疙瘩成纤维细胞增殖、迁移,并促进凋亡。

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
ORCID: 0000-0002-7036-5596(李响)

关键词: 脂肪干细胞, 瘢痕疙瘩成纤维细胞, 共培养, 细胞增殖, 细胞凋亡, ERK通路, 干细胞, 国家自然科学基金

Abstract:

BACKGROUND: Adipose-derived stem cells have been widely used for tissue filling and repair, but the mechanism underlying skin scar inhibition and repair is still unclear. 
OBJECTIVE: To explore the effect of adipose-derived stem cells on biological activity of keloid fibroblasts and its molecular mechanism.
METHODS: Passage 3 human adipose-derived stem cells were seeded into the upper Transwell chamber at the density of 0, 3×104, 6×104, 1.2×105 per well (0 indicates control group). Passage 4 keloid fibroblasts at logarithmic growth phase were inoculated into the lower chamber at the density of 6×104 per well, and co-cultured with human adipose-derived stem cells at the ratio of 1:0.5, 1:1 and 1:2, respectively. After 24-hour co-culture, keloid fibroblasts from the lower chamber were used for index measurement. 
RESULTS AND CONCLUSION: Human adipose-derived stem cells markedly inhibited the proliferation, migration and collagen synthesis of keloid fibroblasts, and the inhibitory effect was significantly enhanced as the proportion of adipose-derived stem cells increased. Human adipose-derived stem cells also markedly promoted cell apoptosis in keloid fibroblasts, and this effect was enhanced as the proportion of adipose-derived stem cells increased. Western blot results showed that human adipose-derived stem cells significantly suppressed keloid fibroblasts p-ERK, Bcl2 and β-catenin protein expression. Overall, adipose-derived stem cells can inhibit the proliferation and migration but promote apoptosis of keloid fibroblasts by inhibiting the ERK/β-catenin pathway.

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

Key words: Stem Cells, Adipose Tissue, Keloid, Fibroblasts, Coculture Techniques, Cell Proliferation, Apoptosis, Tissue Engineering

中图分类号: