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中国临床药理学与治疗学 ›› 2007, Vol. 12 ›› Issue (8): 900-905.

• 基础研究 • 上一篇    下一篇

丝裂霉素C对瘢痕疙瘩成纤维细胞增殖及凋亡的影响

于冬梅, 郝立君, 李颖, 肖志波, 刘莺   

  1. 哈尔滨医科大学附属第二医院整形美容科, 哈尔滨 150086, 黑龙江
  • 收稿日期:2007-03-16 修回日期:2007-07-20 出版日期:2007-08-26 发布日期:2020-10-27
  • 通讯作者: 郝立君, 男, 博士, 教授, 博士生导师, 主任医师, 从事病理性瘢痕防治的研究。Tel:0451-83082039 E-mail:lijun337@yahoo.com.cn
  • 作者简介:于冬梅,女,在读博士,住院医生,从事病理性瘢痕形成机制及防治方面的研究。Tel:0451-81961167 E-mail:tyu111111@sohu.com

Effects of mitomycin C on proliferation and apoptosis of fibroblasts derived from keloid

YU Dong-mei, HAO Li-jun, LI Ying, XIAO Zhi-bo, LIU Ying   

  1. The Plastic Center of the Second Affiliated Hospital of Harbin Medical University, Harbin 150086, Heilongjiang, China
  • Received:2007-03-16 Revised:2007-07-20 Online:2007-08-26 Published:2020-10-27

摘要: 目的: 探讨丝裂霉素C(MMC) 对瘢痕疙瘩成纤维细胞(FB) 增殖和凋亡效应的影响及机制, 为瘢痕疙瘩的治疗提供理论依据。方法: 用MMC 作用于体外培养的瘢痕疙瘩FB, MTT 法测量细胞增殖情况;流式细胞术、光镜和透射电镜检测FB 的周期分布、凋亡率和细胞形态学变化;通过RT-PCR、Westernblotting 检测cyclin D1 和caspase-3 的mRNA 及蛋白表达水平。结果: MMC 呈时间和剂量依赖性抑制瘢痕疙瘩FB 增殖;MMC 可改变细胞周期分布, 使G0/G1 期细胞比例增加, 诱导FB 凋亡, 凋亡随剂量的增加而增加;MMC 作用后cyclin D1 的mRNA 及蛋白表达减少, caspase-3 的表达增加。结论: MMC 可能是通过降低cyclin D1 表达, 促进caspase-3 表达, 改变细胞周期分布, 抑制增殖诱导FB 凋亡而发挥治疗瘢痕疙瘩作用。

关键词: 瘢痕疙瘩, 丝裂霉素C, 细胞周期, 凋亡, cyclin D1, caspase-3

Abstract: AIM: To study the effects of mitomycin C (MMC) on proliferation and apoptosis of fibroblasts derived from keloid. METHODS: Using the cultured fibroblasts derived from keloid subjected to MMC, the proliferation of fibroblasts was detected by MTT.The flow cytometry, microscope and electron microscope were used for evaluation of cell cycles, apoptosis and modality.The expression of cyclin D1 and caspase-3 was detected by RT-PCR and western blotting. RESULTS: MMC inhibited proliferation of fibroblasts in a time-and concentration-dependent manner.MMC changed cell cycles and caused apoptosis in a dose-depended manner and increased the percentage of G0/G1 phase cells in fibroblasts.MMC decreased the expression of cyclin D1 and enhanced the expression of caspase-3. CONCLUSION: Changing the expression of cyclin D1 and caspase-3, MMC may play a critical role in suppressing proliferation and inducing apoptosis of fibroblasts to prevention and cure keloid.

Key words: keloid, mitomycin C, cell cycle, apoptosis, cyclin D1, caspase-3

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