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PERILIPIN-dependent control of lipid droplet structure and fat storage in Drosophila.

机译:果蝇中脂滴结构和脂肪储存的PERILIPIN依赖性控制。

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摘要

Lipid droplets are intracellular organelles enriched in adipose tissue that govern the body fat stores of animals. In mammals, members of the evolutionarily conserved PERILIPIN protein family are associated with the lipid droplet surface and participate in lipid homeostasis. Here, we show that Drosophila mutants lacking the PERILIPIN PLIN1 are hyperphagic and suffer from adult-onset obesity. PLIN1 is a central and Janus-faced component of fat metabolism. It provides barrier function to storage lipid breakdown and acts as a key factor of stimulated lipolysis by modulating the access of proteins to the lipid droplet surface. It also shapes lipid droplet structure, transforming unilocular into multilocular fat cells. We generated flies devoid of all PERILIPIN family members and show that they exhibit impaired yet functional body fat regulation. Our data reveal the existence of a basal and possibly ancient lipid homeostasis system.
机译:脂滴是富含脂肪的细胞内细胞器,可以控制动物体内的脂肪储存。在哺乳动物中,进化上保守的PERILIPIN蛋白家族的成员与脂质液滴表面有关,并参与脂质体内平衡。在这里,我们表明,缺乏PERILIPIN PLIN1的果蝇突变体是吞噬性的,患有成年肥胖症。 PLIN1是脂肪代谢的重要组成部分。它提供了屏障功能来存储脂质分解,并通过调节蛋白质对脂质液滴表面的访问而成为刺激的脂解的关键因素。它还可以塑造脂滴结构,将单眼脂肪细胞转变为多眼脂肪细胞。我们产生了没有所有PERILIPIN家族成员的苍蝇,并显示它们表现出受损的功能性脂肪调节功能。我们的数据揭示了基础的和可能古老的脂质稳态系统的存在。

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