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中国临床药理学与治疗学 ›› 2010, Vol. 15 ›› Issue (7): 742-746.

• 基础研究 • 上一篇    下一篇

尾加压素Ⅱ对肺腺癌A549细胞凋亡的影响及相关机制研究

周成华1, 宋征1, 邢淑华1, 武玉清2, 郑骏年3, 裴冬生3   

  1. 1徐州医学院药理学教研室, 2麻醉药理学教研室, 3肿瘤生物治疗实验室,徐州 221004,江苏
  • 收稿日期:2010-04-30 修回日期:2010-06-16 出版日期:2010-07-26 发布日期:2020-09-15
  • 通讯作者: 武玉清,男,博士,副教授,研究方向:肿瘤药理学。Tel: 0516-83262107 E-mail: xzmcyqwu@126.com
  • 作者简介:周成华,女,博士,讲师,研究方向:肿瘤药理学。Tel: 0516-83262107 E-mail: chzhou77@126.com
  • 基金资助:
    江苏省高校自然科学基金(08KJD310010);徐州医学院院长专项人才基金(08KJZ05);徐州医学院肿瘤生物治疗重点实验室开放课题基金(C0804)资助

Effect of Urotensin II on the apoptosis of human lung adenocarcinoma A549 cells and the underlying mechanism

ZHOU Cheng-hua1, SONG Zheng1, XING Shu-hua1, WU Yu-qing2, ZHENG Jun-nian3, PEI Dong-shang3   

  1. 1Department of Pharmacology, 2Department of Anesthetic Pharmacology, Xuzhou Medical College, 3Labonratory of Bioligical Canter Therapy, Xuzhou 221004, Jiangsu, China
  • Received:2010-04-30 Revised:2010-06-16 Online:2010-07-26 Published:2020-09-15

摘要: 目的: 探讨尾加压素Ⅱ(U-Ⅱ)对肺腺癌A549细胞凋亡的影响及相关机制。方法: 将体外培养A549细胞分为正常对照组、 顺铂组(25 μg/mL)及U-Ⅱ+顺铂组(10-7 mol/L U-Ⅱ+ 25 μg/mL 顺铂),TUNEL法测定A549细胞凋亡,免疫细胞化学方法检测A549细胞中Bcl-2和Bax的表达。结果: 与正常对照组相比,顺铂组肺腺癌A549细胞的凋亡率明显增加,Bcl-2蛋白表达明显降低,Bax表达明显升高(P<0.01);与顺铂组相比,U-Ⅱ则能够抑制A549细胞的凋亡,上调Bcl-2蛋白表达,下调Bax蛋白表达(P< 0.01)。结论: U-Ⅱ可通过上调Bcl-2蛋白表达,下调Bax蛋白表达从而抑制肺腺癌A549细胞凋亡。

关键词: 尾加压素Ⅱ, 肺腺癌, A549, 凋亡, Bcl-2, Bax

Abstract: AIM: To explore the effect of Urotensin II on the apoptosis of human lung adenocarcinoma A549 cells and its underlying mechnism. METHODS: A549 cells were divided into three groups: Control group, Cisplatin group (25 μg/mL)and Urotensin II+Cisplatin group(10-7 mol/L U-Ⅱ+ 25 μg/mL cisplatin). The effect of Urotensin II on the apoptosis of A549 cells was determined by TUNEL method. The expressions of Bcl-2 and Bax were detected by immunocytochemistry. RESULTS: Comparing with Control group, the apoptotic rate and the expression of Bax were increased, while the expression of Bcl-2 was decreased in Cisplatin group(P<0.01). Urotensin II significantly inhibited Cisplatin-induced apoptosis of A549 cells and antagonized Cisplatin-induced down-regulation of Bcl-2 and up-regulation of Bax(P<0.01). CONCLUSION: Urotensin II inhibits the apoptosis of human lung adenocarcinoma A549 cells by up-regulating the expression of Bcl-2 and down-regulating the expression of Bax.

Key words: Urotensin II, Lung adenocarcinoma, A549, Apoptosis, Bcl-2, Bax

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