Snail regulates hepatocellular carcinoma orphan nuclear receptor Nur77 promoter methylation

Abstract

Nur77隶属于类固醇/甲状腺/视黄酸核受体超家族,在细胞增殖、凋亡过程以及肠癌、黑色素瘤的发生发展中发挥着重要的作用。但是,有关Nur77与肝癌的研究却比较少。基于Oncomine数据库信息,本文研究发现,在临床组织样品中,癌旁组织中Nur77的表达远远高于对应肝癌组织中的表达。我们从基因修饰入手,通过甲基化抑制剂ADC梯度给药实验最终将目标指向DNA甲基化。通过序列比对我们发现,Nur77启动子上含有转录抑制因子Snail特异性结合的E-box结构(CAGGTG)。通过构建稳转过表达或者敲低Snail的肝癌细胞,Nur77在mRNA水平、蛋白水平及其启动子活性都与Snail呈现一种负相关变...Nur77 is a member of the steroid/thyoid/retinoid nuclear receptor superfamily. Although it plays an important role in cell proliferation, apoptosis, development of colon cancer and melanoma, there is less study focused on Nur77 and hepatocarcinoma. Based on the Oncomine Database information, we found that the expression of Nur77 in para-carcinoma is higher than that in paired carcinoma in clinical...学位:理学硕士院系专业:生命科学学院_细胞生物学学号:2162014115248

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