天然产物研究与开发 ›› 2014, Vol. 26 ›› Issue (5): 774-777.

• 开发研究 • 上一篇    下一篇

蜗牛多肽混合物对过氧化氢诱导的SH-SY5Y细胞PCNA表达的影响

席守民1*,安君岭1,赵焕东2,温新丽1,高永忠2   

  1. 1 河南科技大学医学院药理学与医学分子生物学重点实验室,洛阳 471003;2 永城市中心医院,永城 476600
  • 出版日期:2014-05-31 发布日期:2014-11-17

Effect of Snail Polypeptide Mixture on Expression of PCNA in Injured SH-SY5Y Cells Induced by Hydrogen Peroxide

XI Shou-min1*, AN Jun-ling1, ZHAO Huan-dong2, WEN Xin-li1, GAO Yong-zhong2   

  1. 1 The Key Laboratory of Pharmacology and Medical Molecular Biology,Medical College,Henan University of Science and Technology, Luoyang 471003,China;2 Yongcheng central Hospital,Yongcheng 476600,China
  • Online:2014-05-31 Published:2014-11-17

摘要: 采用H2O2诱导人神经母细胞瘤细胞株(SH-SY5Y)细胞损伤,MTT法测定细胞存活率,不同浓度蜗牛多肽混合物(SPM)处理后,Hoechst染色检测细胞凋亡,细胞免疫化学技术和Western blot技术检测细胞PCNA的表达。结果发现1.54 mmol/L H2O2可诱导SH-SY5Y细胞凋亡,PCNA的表达明显降低。经用39 mg/L(SPM-L组)和156 mg/L(SPM-H组)浓度的SPM处理后,SH-SY5Y细胞凋亡明显减少(H2O2 VS.SPM-L:58.39±8.67% VS.44.06±4.35%,P<0.05; H2O2VS.SPM-H:58.39±8.67% VS.32.45±9.44%,P<0.01),同时PCNA的表达呈浓度依赖性升高。提示SPM可抑制H2O2诱导的SH-SY5Y细胞凋亡,其作用机制可能与其增加细胞PCNA的表达有关。

关键词: 蜗牛多肽, 过氧化氢, SH-SY5Y细胞, 凋亡, PCNA

Abstract: In this study,hydrogen peroxide (H2O2) was used to induce SH-SY5Y cells damage.The viability of SH-SY5Y cells was then measured with MTT assay.Cell apoptosis was detected with Hoechst staining.The expression of PCNA was determined with immunocytochemistry and western blotting.The results showed that 1.54 mmol/L H2O2 can significantly induce apoptosis,and decrease expression of PCNA in SH-SY5Y cells.After treatment with 39 mg/L (SPM-L) and 156 mg/L (SPM-H) of snail polypeptide mixture (SPM), H2O2-induced apoptosis cells were attenuated (H2O2 VS.SPM-L:58.39±8.67% VS.44.06±4.35%,P<0.05; H2O2 VS.SPM-H:58.39±8.67% VS.32.45±9.44%, P<0.01),while there was a concentration-dependent increase of PCNA expression in the SPM groups.These results suggested that the SPM can protect against H2O2-induced SH-SY5Y cells apoptosis,which may be correlated with up-regulated PCNA expression.

Key words: snail polypeptide, hydrogen peroxide, SH-SY5Y cell, apoptosis, PCNA

中图分类号: 

R931.6/ R932