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富勒烯对人胚肝细胞内过氧化氢酶、谷胱甘肽过氧化物酶和超氧化物歧化酶mRNA的表达的影响 被引量:3

Effects of Fulerence on mRNA Expression of CAT,GSH-Px and SOD in L-02 Cells
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摘要 目的探讨富勒烯(C60)对人胚肝细胞(L-02)内过氧化氢酶(CAT)、谷胱甘肽过氧化物酶(GSH-Px)和超氧化物歧化酶(SOD)mRNA表达的影响。方法将对数生长期的人胚肝细胞接种于96孔培养板(细胞密度为104个/孔),随机分为对照组(生理盐水)和1.25、2.50、5.00、10.00、20.00、40.00μg/ml富勒烯染毒组,培养24h后,采用MTT试验检测富勒烯对细胞存活率的影响。将人胚肝细胞分别暴露于0、1.00和20.00μg/ml富勒烯24h,采用实时定量PCR法检测细胞内CAT、GSH-Px和SODmRNA的相对表达量。结果与对照组比较,1.25、2.50、5.00、10.00、20.00、40.00μg/ml富勒烯染毒组的细胞存活率均降低,差异有统计学意义(P<0.05或P<0.01);且细胞存活率随富勒烯染毒剂量的增加而降低。与对照组比较,1.00μg/ml富勒烯染毒组GSH-Px和SOD以及20.00μg/ml富勒烯染毒组CAT、GSH-Px和SODmRNA相对表达水平较低,差异均有统计学意义(P<0.05或P<0.01);且人胚肝细胞中CAT、GSH-Px、SODmRNA的相对表达水平随着富勒烯染毒剂量的增加而降低。结论富勒烯可通过降低人胚胎肝细胞内CAT、GSH-Px和SODmRNA的表达水平,引起肝细胞发生过氧化损伤。 Objective To know the effects of fuIerence (C60) on mRNA expression of CAT, GSH-Px and SOD in L-02 cells. Methods L-02 cells at logarithmic phase were exposed to C60 at the doses of 0, 1.25, 2.50, 5.00, 10.00, 20.00 and 40.00 μg/ml respectively in 96-cell microplate (104 cells/cell) for 24 h, the cell viability was examined by MTT assay. Then cells were exposed to normal saline, 1.00 and 20.00 μg/ml C60 for 24 h, and then CAT, GSH-Px and SOD mRNA expression were determined by real-time PCR. Results As C60 concentration increased, L-02 cell viability decreased (P〈0.05 or P〈0.01), the level of CAT, GSH-Px and SOD mRNA expression decreased with dose dependent manner, and compared with the control, mRNA expression in exposure group decreased significantly (P〈0.05 or P〈0.01), except CAT mRNA expression in 1.00 μg/ml C60 group. Conclusion Fulerence (C60) may cause peroxidation damage in L-02 cells through decreasing CAT,GSH-Px and SOD mRNA expression.
出处 《环境与健康杂志》 CAS CSCD 北大核心 2010年第7期584-586,共3页 Journal of Environment and Health
基金 天津市卫生局科技基金资助项目(05KYZ45) 天津市疾病预防控制中心引进人才启动项目(CDCRC06)
关键词 富勒烯 人胚肝细胞 细胞毒性 氧化损伤 Fulerence(C6o) L-02 cells Cytotoxicity Oxidative damage
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同被引文献43

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