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首页> 外文期刊>EMBO reports >The antiobesity factor WDTC1 suppresses adipogenesis via the CRL4(WDTC1) E3 ligase
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The antiobesity factor WDTC1 suppresses adipogenesis via the CRL4(WDTC1) E3 ligase

机译:抗肥胖因子WDTC1通过CRL4(WDTC1)E3连接酶抑制脂肪生成

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摘要

WDTC1/Adp encodes an evolutionarily conserved suppressor of lipid accumulation. While reduced WDTC1 expression is associated with obesity in mice and humans, its cellular function is unknown. Here, we demonstrate that WDTC1 is a component of a DDB1-CUL4-ROC1 (CRL4) E3 ligase. Using 3T3-L1 cell culture model of adipogenesis, we show that disrupting the interaction between WDTC1 and DDB1 leads to a loss of adipogenic suppression by WDTC1, increased triglyceride accumulation and adipogenic gene expression. We show that the CRL4(WDTC1) complex promotes histone H2AK119 monoubiquitylation, thus suggesting a role for this complex in transcriptional repression during adipogenesis. Our results identify a biochemical role for WDTC1 and extend the functional range of the CRL4 complex to the suppression of fat accumulation.
机译:WDTC1 / Adp编码脂质积累的进化保守抑制剂。尽管WDTC1表达降低与小鼠和人类肥胖有关,但其细胞功能尚不清楚。在这里,我们证明WDTC1是DDB1-CUL4-ROC1(CRL4)E3连接酶的一个组成部分。使用脂肪形成的3T3-L1细胞培养模型,我们显示破坏WDTC1和DDB1之间的相互作用会导致WDTC1失去脂肪抑制作用,增加甘油三酸酯积累和脂肪形成基因的表达。我们显示,CRL4(WDTC1)复合物可促进组蛋白H2AK119单泛素化,从而暗示该复合物在脂肪形成过程中的转录抑制中的作用。我们的结果确定了WDTC1的生化作用,并将CRL4复合物的功能范围扩展到了抑制脂肪蓄积。

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