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• 基础研究 • 上一篇    下一篇

姜黄素对中波紫外线照射后HaCaT细胞氧化致癌的预防作用

康顺爱1,郭彩霞2,王志成1,李艳博1,姚崇舜3,龚守良1,李校堃3,4   

  1. (1. 吉林大学公共卫生学院 卫生部放射生物学重点实验室,吉林 长春 130021;2. 吉林大学公共卫生学院卫生毒理学教研室,吉林 长春 130021;3. 温州医学院,浙江 温州 325501;4.吉林农业大学,吉林 长春130118)
  • 收稿日期:2008-10-23 修回日期:1900-01-01 出版日期:2009-03-28 发布日期:2009-08-14
  • 通讯作者: 李校堃

Preventive effect of curcumin on UVB oxidation carcinogenesis in HaCaT cells

KANG Shun-ai1,GUO Cai-xia2,WANG Zhi-cheng1,LI Yan-bo1,YAO Chong-shun2,GONG Shou-liang1,LI Xiao-kun3,4   

  1. (1.Key Laboratory of Radiobiology,Ministry of Health,School of Public Health,Jilin University Ultravioloet,Changchun 130021,China;2.Department of Health Toxicology,School of Public Health,Jilin University,Changchun 130021,China;3.School of Pharmacology,Wenzhou Medical College,Wenzhou 325501,China;4.Jilin Agricultural University,Changchun 130118,China)
  • Received:2008-10-23 Revised:1900-01-01 Online:2009-03-28 Published:2009-08-14
  • Contact: LI Xiao-kun

摘要: 目的:探讨姜黄素(Cur)对中波紫外线(UVB)照射后人类角质形成细胞(HaCaT)氧化致癌的预防作用及其机制。方法:细胞经UVB照射后,立即加入浓度分别为1.25、2.50和5.00 mg•L-1的Cur继续培养,用酶化学法测定氧化和抗氧化物含量;由罗丹明123和Fluo-3/AM荧光强度计算细胞Δψ和[Ca2+]i,用流式细胞术检测凋亡相关因子蛋白表达。结果:与对照组比较,UVB照射组HaCaT细胞Δψ、SOD和GSH-Px含量及Bcl-2蛋白表达均显著下降(P<0.01),而细胞[Ca2+]i、ROS、NO和MDA含量以及caspase-3、cytochrom c和Bax蛋白表达均明显升高(P<0.01);与UVB照射组比较,UVB照射后加入Cur各组细胞Δψ和Bcl-2蛋白表达以及2.50和5.00 mg•L-1组的SOD和GSH-Px含量均明显升高(P<0.01),而各加药组的ROS、NO和MDA含量以及caspase-3、cytochrom c和Bax蛋白表达和2.50和5.00 mg•L-1组的[Ca2+]i均显著降低(P<0.01),Bcl-2/Bax比值为0.58~2.50,并显示Cur剂量-效应关系。结论:Cur可能通过提高线粒体膜电位和抗氧化酶活性,降低[Ca2+]i、氧化物含量及凋亡相关诱导因子蛋白表达,从而达到其抗UVB辐射细胞致癌的预防作用。

关键词: HaCaT细胞, 中波紫外线, 膜电位, 氧化

Abstract: Abstract:Objective To study the preventive effect of curcumin (Cur) on ultraviolet B (UVB) oxidation carcinogenesis in HaCaT cells and its mechanisms. Methods 1.25,2.50 and 5.00 mg•L-1 Cur were added into HaCaT cells irradiated by UVB and the cells were cultivated continually.The contents of oxides and antioxides were determined with zymochemistry method;the Δψ potential and the [Ca2+]i were measured with Rhodamine 123 and Fluo-3/AM fluorescence.The protein expressions of apoptotic correlating factors were examined by flow cytometry. Results Compared with control group,the Δψ of the HaCaT cells ,the contents of SOD and GSH-Px and the expression of Bcl-2 protein in UVB irradiation groups decreased significantly after UVB irradiation (P<0.01);while the [Ca2+]i,the contents of ROS,NO and MDA,and the protein expressions of caspase-3,cytochrome c and Bax increased significantly (P<0.01). After Cur was added into the cells irradiated with UVB , the Δψ and the expression of Bcl-2 in every Cur group increased significantly,the contents of SOD and GSH-Px in 2.50 and 5.00 mg•L-1 Cur groups increased significantly(P<0.01),while the contents of ROS,NO and MDA and the protein expressions of caspase-3,cytochrom c and Bax in every Cur group and the [Ca2+]i in 2.50 and 5.00 mg•L-1 Cur groups decreased significantly compared with UVB irradiation group(P<0.01).The ratio of Bcl-2/Bax varied within 0.58-2.50 and Cur showed a pattern of dose-effect. Conclusion Cur could increase the Δψ and the antioxidase activity and decrease the [Ca2+]i,the contents of oxides and the protein expressions of induced apoptotic correlating factors. Cur has preventive effect on cancinogenesis of the cells irradiated by UVB.

Key words: HaCaT cells, ultraviolet B, membrane potentials, oxidation

中图分类号: 

  • R285.5