基础医学与临床 ›› 2017, Vol. 37 ›› Issue (3): 360-363.

• 研究论文 • 上一篇    下一篇

紫外线诱导人皮肤成纤维细胞形态改变及对基质金属蛋白酶表达的影响

王燕华1,蔡丽敏1,杨晶2,郑淑云1   

  1. 1. 哈尔滨医科大学附属第一医院
    2. 黑龙江省医院
  • 收稿日期:2016-04-28 修回日期:2016-11-13 出版日期:2017-03-05 发布日期:2017-02-23
  • 通讯作者: 蔡丽敏 E-mail:563662663@163.com
  • 基金资助:
    黑龙江省卫生厅科研课题

UVB induces morphological changes and the expression of MMPs in human fibroblasts

  • Received:2016-04-28 Revised:2016-11-13 Online:2017-03-05 Published:2017-02-23

摘要: 目的 研究紫外线(UVB)诱导人皮肤成纤维细胞中端粒长度及基质金属蛋白酶(MMPs)的变化,及其在UVB诱导光老化中的作用。方法 原代培养人成纤维细胞,用第5代细胞进行UVB照射处理。观察细胞形态,实时定量PCR检测COL1a1和hTERT的mRNA表达细胞端粒长度,Western blot检测MMP-3和MMP-1蛋白。结果 30 mJ/cm2UVB照射人成纤维细胞24h后,细胞逐渐变圆、皱缩和排列紊乱;COL1a1和TERT的mRNA水平表达显著升高,基质金属蛋白酶MMP-3和MMP-1蛋白水平也显著升高,端粒长度显著缩短。结论 UVB可能诱导人皮肤成纤维细胞形态改变,及MMP-3和MMP-1的表达明显升高,启动了光老化的早期进程。

关键词: 关键词: 光老化, 人成纤维细胞, 端粒, 基质金属蛋白酶

Abstract: Objective To observe the changes of telomere length and MMPs level in human fibroblasts induced by UVB, and to explore their roles onskin photoaging. MethodsHuman skin fibroblasts was extracted and culture.The 5th fibroblasts were irradiated by UVB. The morphology of fibroblasts were observed, and the length of telomere and the mRNA expression of COL1a1 and hTERT were detected by QRT-PCR. The expression of MMP-3 and MMP-1 were detected by Western blot. Results The fibroblastsgradually became round, wrinkled and disordered after 30mJ/cm2 UVB irradiation for 24h. The mRNA level of COL1a1 and hTERT and the expression of MMP-3 and MMP-1 weresignificantly increased after UVB irradiation compared with control, and the length of telomere was shortened. Conclusions UVB might initiate the early process of photoaging by the morphological changes of human skin fibroblasts and increasing the expression of MMP-3 and MMP-1.

Key words: Key word: sphotoaging, human fibroblast, telomere, MMPs

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