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中国临床药理学与治疗学 ›› 2009, Vol. 14 ›› Issue (10): 1085-1090.

• 基础研究 • 上一篇    下一篇

姜黄素抑制尾加压素-II 诱导的人晶状体上皮细胞增殖及[Ca2+] i 、cAMP 、cGMP 信号转导机制

祁明信1, 黄秀榕2, 胡俊2, 杨丽英2   

  1. 1福建中医学院 附属第二人民医院眼科, 2福建中医学院 病理生理研究中心, 福州 350003, 福建
  • 收稿日期:2009-08-17 修回日期:2009-09-23 发布日期:2020-10-29
  • 通讯作者: 黄秀榕,女,教授,博士研究生导师,研究方向:白内障的基础与临床研究。
  • 作者简介:祁明信,男,教授,主任医师,博士研究生导师,研究方向:白内障的基础与临床研究。Tel:0591-83570887 E-mail:qihuang@netease.com
  • 基金资助:
    福建省中医药重点项目(Wzzb0601)

Effect of Curcumin on proliferation inhibition induced by Urotensin-II in human lens epithelial cell and its mechanism of signal transduction

QI Ming-xin1, HUANG Xiu-rong2, HU Jun2, YANG Li-ying2   

  1. 1Department of Ophthalmology, the Second Affiliated Hospital, 2Research Center of Pathophysiology, Fujian College of Traditional Chinese Medicine, Fuzhou 350003, Fujian, China
  • Received:2009-08-17 Revised:2009-09-23 Published:2020-10-29

摘要: 目的 探讨姜黄素(curcumin, Cur)抑制尾加压素II (urotensin II, U-II)诱导的人晶状体上皮细胞(human lens epithelial cell, HLEC)增殖及[Ca2+] i 、cAMP 、cGMP 信号转导机制。方法 将UII诱导体外培养的HLEC 发生增殖, 并用不同浓度的Cur 与其共同孵育后, 用MTT 法检测HLEC的活性;用流式细胞术(flow cytometer, FCM)检测HLEC 增殖细胞核抗原(proliferating cell nuclear antigen, PCNA)表达;用荧光分光光度法检测HLEC内游离钙离子浓度[Ca2+] i;用放射免疫分析法检测HLEC 内环化腺苷酸(cyclicadenosine monophosphate, cAMP)和环化鸟苷酸(cyclic guanosine monophosphate, cGMP)浓度。结果 U-II 组HLEC 活性、PCNA 蛋白表达和cGMP 浓度均高于对照组(P <0.01);Cur 组HLEC 活性、PCNA 蛋白表达和cGMP浓度均比U-II 组降低(P <0.01)。U-II 组HLEC[Ca2+] i 比对照组显著升高(P <0.01), U-II 组cAMP 浓度比对照组显著降低(P <0.01);Cur 组与U-II 组比较[Ca2+] i 、cAMP 浓度显著升高(P <0.01)。结论 Cur 可抑制U-II 诱导的HLEC 增殖。[Ca2+] 、cAMP-PKA 、cGMP-PKG 是其重要的细胞信号转导机制。Cur 有可能成为防治后发性白内障的有效药物。

关键词: 尾加压素II, 姜黄素, 晶状体上皮细胞, 增殖, 信号转导, 后发性白内障

Abstract: AIM: To study the effect of Curcumin (Cur)on proliferation inhibition induced by urotensin-II in human lens epithelial cell (HLEC)and its signal transduction mechanism of [Ca2+] i, cAMP and cGMP. METHODS: The cultured HLEC were incubated with different concentrations of Cur and the HLEC activities were detected viaMTT assay.The proliferative cell nuclear antigen (PCNA)of HLEC were detected via flow cytometer(FCM).The concentration of intracellular free calcium ([Ca2+] i)of HLEC were determined by spectrofluoremeter.The intracellular contents of cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP)of HLEC were detected by radioimmunoassay. RESULTS: The activity, expression of PCNA and the cGMP concentration of HLEC in U-II group were higher than those in control group, but they were significantly decreased in Cur group (P <0.01).Compared with control group, the [Ca2+] i concentration of HLEC in U-II group was increased, and the cAMP concentration in U-II group was decreased (P < 0.01).Compared with U-II group, the concentrations of cAMP and [Ca2+] i were increased (P <0.01). CONCLUSION: Cur can inhibit the proliferation of HLEC induced by urotensin- II.The signal transduction of [Ca2+], cAMP-PKA and cGMP-PKG may play an important role in it.Cur may become an effective drug of preventing and treating after-cataract.

Key words: Urotensin II, Curcumin, lens epithelial cell, proliferation, signal transduction, after-cataract

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