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中国临床药理学与治疗学 ›› 2007, Vol. 12 ›› Issue (9): 1013-1017.

• 基础研究 • 上一篇    下一篇

低氧内皮细胞条件培养液和DDPH 对肺动脉平滑肌细胞骨桥蛋白基因及α平滑肌肌蛋白表达的影响

杜兵1, 陈蓓蓓2, 王西明2, 段秋红2, 何善述2   

  1. 1温州医学院附属二院, 温州325000, 浙江;
    2华中科技大学同济医学院, 武汉430030, 湖北
  • 收稿日期:2007-07-03 修回日期:2007-09-04 出版日期:2007-09-26 发布日期:2020-10-30
  • 作者简介:杜兵, 女, 硕士, 住院医师, 研究方向:细胞信号传递。Tel:13777781469 E-mail:Hellendu2000@163.com;陈蓓蓓, 女, 教授, 硕士生导师, 研究方向:细胞信号传递。Tel:027-88046367
  • 基金资助:
    国家自然科学基金资助(39270295)

Effects of HECCM and DDPH on the expression of osteopontin gene and α-SM-actin in PASMC

DU Bing1, CHEN Pei-pei2, WANG Xi-ming2, DUAN Qiu-hong2, HE Shan-shu2   

  1. 1Second Affiliated Hospital of Wenzhou Medical College, Wenzhou 32500, Zhejiang, China;
    2Department of Biochemistry and Molecular Biology, Tongji Medical College, HuazhongUniversity of Science and Techology, Wuhan 430030, Hubei, China
  • Received:2007-07-03 Revised:2007-09-04 Online:2007-09-26 Published:2020-10-30

摘要: 目的:研究低氧内皮细胞条件培养液(HECCM)和DDPH 对肺动脉平滑肌细胞(PASMC) 骨桥蛋白(OPN) 基因表达和α平滑肌肌动蛋白(α-SM-actin)的影响, 进而探讨DDPH 对增殖后PASMC 的逆转效应。方法:利用HECCM 建立猪PASMC 的增殖模型;采用细胞培养、改良的四甲基偶氮唑盐比色法(MTT)、免疫细胞化学染色测定α-SM-actin、逆转录-聚合酶链反应(RT-PCR) 检测OPN 基因表达等方法观察HECCM 的促PASMC 增殖作用, 以及DDPH 对增殖后PASMC α-SM-actin 和OPN 表达的影响。结果:(1) HECCM 促PASMC 增殖后, PASMC 的α-SMactin含量降低而其OPN 基因表达上调;(2) HECCM促PASMC 增殖后, 加入DDPH 可使PASMC 的α-SMactin含量回升, OPN 表达下调。结论:DDPH 对HECCM 促PASMC 增殖有逆转效应, 可使增殖后PASMC 由合成表型逆转为正常收缩表型。

关键词: DDPH, α-SM-actin, 骨桥蛋白, 低氧, 肺动脉平滑肌细胞

Abstract: AIM: To study the effects of hypoxial endothelia cell conditional medium(HECCM) and DDPH on the expression of osteopontin(OPN) gene and α-SM-actin in pulmonary arterial muscle cell (PASMC), and the reverse effect of DDPH on proliferating PASMC induced by HECCM.METHODS: Hypoxial endothelia cell model was established in PASMC of swine.MTT assay and Immunocytochemistry was used to test cell proliferation, the expression of α-SM-actin.Reverse transcription polymerase chain reaction(RT-PCR) was used to detect the expression of OPN gene.RESULTS: (1) HECCM decrease the level of α-SM-actin and up-regulate the expression of OPN gene in PASMC;(2) DDPH increase the level of α-SM-actin and down-regulate the expression of OPN gene in PASMC.CONCLUSION: DDPH could reverse the phenotype transformation of PASMC exposed to HECCM, and transform PASMC from synthetic phenotype to normal contractile phenotype.

Key words: DDPH, α-smooth muscle-actin, hypoxia, osteopontin, pulmonary arterial smooth muscle cell

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