中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (33): 4926-4932.doi: 10.3969/j.issn.2095-4344.2016.33.009

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

hIL-24基因通过调控转化生长因子β/Smad通路影响瘢痕疙瘩的生物学特性

吴志远1,史玉仓2,蒋军健3,吴志贤2,张慧君2,刘艳芳2,刘宏伟1   

  1. 1暨南大学第一临床学院,广东省广州市   510632;2广东医学院附属医院整形外科,广东省湛江市   524001;3复旦大学附属华山医院手外科,上海市   200040
  • 收稿日期:2016-05-24 出版日期:2016-08-12 发布日期:2016-08-12
  • 通讯作者: 刘宏伟,博士,教授,暨南大学第一临床学院,广东省广州市 510632
  • 作者简介:吴志远,男,1970年生,广东省湛江市人,汉族,2001年广东医科大学毕业,硕士,教授,主要从事瘢痕基础研究。
  • 基金资助:

    湛江市科技攻关计划项目(2014B01024)

hIL-24 gene influences the biological characteristics of the keloid by regulating transforming growth factor-beta/Smad pathway

Wu Zhi-yuan1, Shi Yu-cang2, Jiang Jun-jian3, Wu Zhi-xian2, Zhang Hui-jun2, Liu Yan-fang2, Liu Hong-wei1   

  1. 1the First Clinical College of Jinan University, Guangzhou 510632, Guangdong Province, China; 2Department of Plastic Surgery, the Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, Guangdong Province, China; 3Department of Hand Surgery, Huashan Hospital Affiliated to Fudan University, Shanghai 200040, China
  • Received:2016-05-24 Online:2016-08-12 Published:2016-08-12
  • Contact: Liu Hong-wei, M.D., Professor, the First Clinical College of Jinan University, Guangzhou 510632, Guangdong Province, China
  • About author:Wu Zhi-yuan, Master, Professor, the First Clinical College of Jinan University, Guangzhou 510632, Guangdong Province, China
  • Supported by:

    the Science and Technology Research Fund of Zhanjiang, No. 2014B01024

摘要:

文章快速阅读:

文题释义:
瘢痕疙瘩:是继发于皮肤损伤如创伤、烧伤或手术后,以胶原过度沉积于真皮和皮下组织为特征的皮肤胶原性疾病。与增生性瘢痕不同,瘢痕疙瘩超过皮损边缘呈浸润性生长, 侵犯临近组织,无自限性, 易造成功能障碍,有好发部位,多见于有色人种,不发生退行性变化,单纯手术切除后易复发,必须辅以电子线照射等综合治疗,有良性真皮肿瘤之称。
hIL-24基因:是研究较明确的抑癌基因,属于是单拷贝基因,定位于的1q32-41,由7个外显子和6个内含子组成,含有49个氨基酸的信号肽。可激活免疫应答效应,又可发挥特异性地抑制癌细胞生长作用,抑制癌周新生血管增生。由于其受体在不同组织、细胞中的表达存在差异,从而hIL-24发挥不同功能。
摘要
背景:
hIL-24基因是研究较明确的肿瘤抑制基因,既可以表达免疫系统刺激蛋白,刺激免疫应答效应,又能特异性地抑制肿瘤细胞生长,抑制肿瘤血管形成,诱导肿瘤细胞凋亡。
目的:分析hIL-24对瘢痕疙瘩成纤维细胞的抑制增殖和诱导凋亡的作用及机制。
方法:经临床及病理确诊为瘢痕疙瘩13例,取瘢痕疙瘩组织进行成纤维细胞培养和鉴定。实验分为对照组(瘢痕疙瘩组织成纤维细胞)和转染hIL-24的瘢痕疙瘩成纤维细胞组。构建慢病毒载体(LVTHM)将hIL-24基因转染瘢痕疙瘩组织成纤维细胞,观察转化生长因子β、Smad3、增殖细胞核抗原、基质金属蛋白酶2、基质金属蛋白酶9、基质金属蛋白酶抑制物1基因表达情况。
结果与结论:①细胞免疫荧光染色及细胞流式显示培养的成纤维细胞内胞浆波形蛋白抗体呈阳性,纯度大于97.8%;定量PCR检测成纤维细胞hIL-24的过表达效率为81.7%;② Western blot检测转梁的成纤维细胞表达hIL-24明显增加;③定量PCR检测,对照组转化生长因子β、Smad3、增殖细胞核抗原、基质金属蛋白酶2、基质金属蛋白酶9表达明显高于转染hIL-24的瘢痕疙瘩成纤维细胞组(P < 0.05),基质金属蛋白酶抑制物1表达明显低于转染hIL-24的瘢痕疙瘩成纤维细胞组;④结果提示,hIL-24抑制成纤维细胞增殖细胞核抗原、基质金属蛋白酶2、基质金属蛋白酶9表达,其作用机制可能是通过转化生长因子β/Smad3转导途径。

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: 0000-0001-6087-1308(吴志远)

关键词: 组织构建, 组织工程, 瘢痕疙瘩, hIL-24, TGF-β/Smad

Abstract:

BACKGROUND: hIL-24, a tumor suppressor gene, can stimulate immune responses, inhibit the growth of tumor cells, and the formation of tumor vessels, and induce cell apoptosis.
OBJECTIVE: To explore the effects of hIL-24 gene on the proliferation and apoptosis of fibroblasts in the keloid and the underlying mechanisms.
METHODS: All the keloid specimens collected from 13 patients were used for fibroblast culture and indentification. Fibroblast of the keloid was transfected with or without hlL-24 lentivirus. Subsequently, mRNA expressions of transforming growth factor-β, Smad3, proliferating cell nuclear antigen, matrix metalloproteinase-2, -9, and metallopeptidase inhibitor 1 were determined.
RESULTS AND CONCLUSION: Immunofluorescent staining and flow cytometry showed that vimentin antibody was expressed positively in cytoplasma of fibroblast cultures, and the purity was more than 97.8%. Western blot assay showed that hIL-24 expression was significantly increased in the transfected fibroblasts. Quantitative PCR showed that the overexpression rate of hIL-24 in fibroblasts was 81.7% and mRNA expressions of transforming growth factor-β, Smad3, proliferating cell nuclear antigen, matrix metalloproteinase-2, and -9 were significantly decreased, while metallopeptidase inhibitor 1 mRNA expression was significantly increased in hIL-24 transfection group compared with control group (P < 0.05). These findings suggest that hIL-24 gene inhibits the expressions of proliferating cell nuclear antigen, matrix metalloproteinase-2, and -9 in fibroblasts, and the underlying mechanism may involves TGF-β/Smad3 pathway.

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: Keloid, Matrix Metalloproteinases, Signal Transduction

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