Nuclear receptor Nur77 promotes fatty acid oxidation by regulating TPβ enzyme activity

Abstract

Nur77是类固醇/甲状腺/视黄酸受体超家族成员,在肿瘤代谢调控中发挥重 要的作用[1]。本实验室前期研究发现,在无糖条件下,Nur77的缺失会导致黑色 素瘤细胞中ROS水平更高,细胞存活率更低。由于无糖条件会激活ERK通路, 使Nur77发生磷酸化并定位于线粒体【王志静硕士毕业论文】。但是,Nur77进 入线粒体后如何调控ROS水平却不清楚,本文为此展开相关的功能机制研究。 本文研究发现,无糖条件下Nur77通过与线粒体蛋白TPβ(trifunctionalprotein β)结合,发挥调控脂肪酸氧化的功能。TPβ在线粒体β氧化的最后一步发挥硫解 酶的作用。检测酶活性和氧化水平...Nur77 is a member of the steroid/thyroid/retinoid receptor superfamily and plays an important role in tumor metabolic regulation[1]. In our previous study, we found that the deficiency of Nur77 could result in higher ROS level, leading cell death under glucose deprivation. Nur77 could be phosphorylated by the ROS-simulated ERK pathway and then translocated to the mitochondria. However, how Nur...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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