山东大学学报(医学版) ›› 2016, Vol. 54 ›› Issue (3): 72-76.doi: 10.6040/j.issn.1671-7554.0.2015.315
李志爽1,于琼1,张春华2
LI Zhishuang1, YU Qiong1, ZHANG Chunhua2
摘要: 目的 探讨罗格列酮与GW9662对人绒癌JEG-3细胞中过氧化物酶体增殖物激活受体-γ(PPAR-γ)表达的影响。 方法 免疫组化法测定PPAR-γ在正常绒毛组织、葡萄胎组织及绒癌组织中的阳性表达;体外培养JEG-3细胞,将JEG-3细胞分为罗格列酮组、GW9662组和对照组,分别采用Transwell实验检测不同浓度PPAR-γ的激动剂罗格列酮与其抑制剂GW9662对JEG-3细胞侵袭能力的影响,免疫细胞化学、Western blotting及实时荧光定量PCR观察PPAR-γ在细胞中表达水平的变化。 结果 PPAR-γ表达于正常绒毛组织、葡萄胎及绒癌组织的细胞核,且PPAR-γ在绒癌组织中的表达明显下调,仅有少数细胞呈弱阳性染色;Transwell实验结果显示,罗格列酮组JEG-3细胞侵袭能力明显减弱,GW9662组细胞侵袭能力增强,两者与对照组比较差异有统计学意义(P<0.05);罗格列酮处理后的JEG-3细胞PPAR-γ表达量下降,GW9662组其表达量升高,且均与对照组比较差异具有统计学意义(P<0.05)。 结论 罗格列酮与GW9662对人绒癌JEG-3细胞中PPAR-γ的调节是一种负反馈调节,并通过这种调节方式影响绒癌的侵袭能力。
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