Antidiabetic phospholipid-nuclear receptor complex reveals the mechanism for phospholipid-driven gene regulation.

Antidiabetic phospholipid-nuclear receptor complex reveals the mechanism for phospholipid-driven gene regulation.
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DOI:
10.1038/nsmb.2279
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发表时间:
2012-04-15
影响因子:
16.8
通讯作者:
Ortlund, Eric A.
Ortlund, Eric A.
中科院分区:
生物学1区
文献类型:
--
作者:
Musille, Paul M.;Pathak, Manish C.;Lauer, Janelle L.;Hudson, William H.;Griffin, Patrick R.;Ortlund, Eric A.

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核受体肝受体同源物-1(LRH-1)在控制脂质和胆固醇稳态中起重要作用,并且是治疗糖尿病和肝病的潜在靶点。已知LRH-1结合磷脂(PL),但PL在控制LRH-1活化中的作用仍存在高度争议。在这里,我们描述了载脂蛋白LRH-1和蛋白质的结构与抗糖尿病的二月桂酰磷脂酰胆碱(DLPC)的复合物。我们的研究表明,DLPC结合是一个新的动态过程,改变辅调节因子的选择性和广泛表达的辅抑制因子的脂质受体相互作用。这些观察结果大大增强了我们对LRH-1调节的理解,并突出了其作为控制糖尿病的新治疗靶点的重要性。
The nuclear receptor Liver Receptor Homolog-1, LRH-1, plays an important role in controlling lipid and cholesterol homeostasis and is a potential target for treatment of diabetes and hepatic diseases. LRH-1 is known to bind phospholipids (PLs) but the role of PLs in controlling LRH-1 activation remains highly debated. Here we describe the structure of both apo LRH-1 and the protein in complex with the antidiabetic dilauroylphosphatidylcholine (DLPC). Our studies show that DLPC binding is a novel dynamic process that alters coregulator selectivity and that the lipid-free receptor interacts with widely expressed corepressors. These observations greatly enhance our understating of LRH-1 regulation and highlight its importance as a novel therapeutic target for controlling diabetes.
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