大黄素上调PPARγ促进HeLa细胞PTEN表达的实验研究 *
2016-01-07邓洁,张小霞,邓晓杨等
大黄素上调PPARγ促进HeLa细胞PTEN表达的实验研究*
邓洁1张小霞1邓晓杨1彭聪1罗剑波1朱涛2
(1.成都医学院第一附属医院妇科, 四川 成都 610500;2.四川大学华西医院呼吸病学研究室/呼吸内科, 四川 成都 610041)
【摘要】目的探讨大黄素对于宫颈癌HeLa细胞增殖的调控作用及其相关机制。方法使用大黄素和/或GW9662 (PPARγ拮抗剂)对HeLa细胞进行干预。在不同时间点(0 h、24h、48h和72h)使用MTT法对HeLa细胞活性进行测定。在干预48h后,使用qPCR和western blot对HeLa细胞PTEN和PPARγ mRNA和蛋白表达水平进行测定。结果GW9662组、大黄素+GW9662组与对照组相比较各时间点细胞活性未见显著统计学差异(P均>0.05);但大黄素组与对照组相比较细胞活性呈时间依赖性降低,差异有显著统计学意义(P均<0.05)。干预48h后,大黄素组PTEN、PPARγ mRNA和蛋白表达较对照组明显增加,差异有显著统计学意义(P均<0.05);但GW9662组和大黄素+GW9662组PTEN、PPARγ mRNA和蛋白表达水平与对照组比较未见显著统计学差异(P均>0.05)。 结论实验表明大黄素可以有效抑制HeLa细胞的增殖,并可能与上调PPARγ表达后促进宫颈癌HeLa细胞PTEN的合成密切相关。
【关键词】HeLa细胞; 大黄素; PTEN; PPARγ
【中图分类号】R 737.33
【文献标志码】A
doi:10.3969/j.issn.1672-3511.2015.10.004
Abstract【】ObjectiveTo investigate the effect of emodin on the expression of PTEN and cell proliferation in HeLa cells, and its potential mechanism. MethodsMTT was used to measure the cell viabilities at each time points (0h, 24h, 48h and 72h). And qPCR and western blot were performed to measure the mRNA and protein expression of PTEN and PPARγ, respectively. ResultsThe cell viabilities of HeLa cells were time-dependently inhibited by emodin. Meanwhile, after 48 hours intervention, the mRNA and protein expression of PTEN and PPARγ were significantly enhanced by emodin. Nevertheless, emodin induced the inhibition of cell viability, and the increment of PTEN and PPARγ were both markedly abrogated by GW9662 (PPARγ antagonist). ConclusionsEmodin could promote the expression of PTEN through the up-regulation of PPARγ in HeLa cells.
基金项目:中国博士后科学基金(2014M552369);四川省医学会科研课题(171140342)
通讯作者:邓晓杨,E-mail:dengxiaoyang2014@sina.com
收稿日期:( 2015-03-19; 编辑: 陈舟贵)
Emodin promotes PTEN expression via up-regulation of PPARγ in HeLa cellsDENG Jie1, ZHANG Xiaoxia1, DENG Xiao-yang1,etal
(1.DepartmentofGynecology,TheFirstAffiliatedHospitalofChengduMedicalCollage,Chengdu610500,China;
2.DivisionofPulmonaryDiseases,StateKeyLaboratoryofBiotherapyofChina,DepartmentofRespiratory
Medicine,WestChinaHospital,SichuanUniversity,Chengdu610041,China)
【Key words】HeLa cells; Emodin; PTEN; PPARγ

大黄素是中药大黄最主要的药理成分,属于蒽醌类化合物[1~4]。研究发现大黄素具有抑制炎症反应、抗过敏、抑制真菌和细菌生长、调节氧化应激和抑制纤维化等多种生物活性[1~4]。同时亦有研究发现大黄素对包括乳腺癌、恶性胶质瘤和肺癌等多种肿瘤具有抑制作用[1~4]。进一步研究发现大黄素抗肿瘤等药理作用的分子机制与促进氧化物酶体增殖激活受体γ (peroxisome proliferators-activated receptor gamma, PPARγ)的表达密切相关[5~8]。本实验的目的是探讨大黄素对于宫颈癌HeLa细胞增殖调控作用及其相关机制。……p>
