SEIPIN: A Key Factor for Nuclear Lipid Droplet Generation and Lipid Homeostasis.

SEIPIN: A Key Factor for Nuclear Lipid Droplet Generation and Lipid Homeostasis.
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Seipin蛋白:核内脂滴生成与脂质稳态的关键因子

DOI:
10.3390/ijms21218208
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发表时间:
2020-11-02
影响因子:
5.6
通讯作者:
Ren Z
Ren Z
中科院分区:
生物学2区
文献类型:
--
作者:
Jin Y;Tan Y;Zhao P;Ren Z

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脂质体内平衡对于正常细胞生理是必不可少的。通常,脂质储存在脂滴(LD)中,脂滴是由中性脂质核心和单层磷脂膜组成的普遍存在的细胞器。据认为LD从内质网产生,然后释放到胞质溶胶中。最近的研究表明,LD可以存在于细胞核中,在维持细胞磷脂稳态中起重要作用。然而,核脂滴(nLD)生成的细节尚未明确的特点。SEIPIN是由Berardinelli-Seip先天性脂肪营养不良2型(BSCL 2)基因编码的非酶蛋白。它与脂肪营养不良疾病有关。最近的许多研究表明,SEIPIN对LD的产生是必不可少的。在这里,我们回顾了大量的研究,试图解释SEIPIN在nLD生成中的作用。从综合的角度来看,我们提出了一个理论模型来解释如何SEIPIN可能参与维持脂质代谢的稳态。
Lipid homeostasis is essential for normal cell physiology. Generally, lipids are stored in a lipid droplet (LD), a ubiquitous organelle consisting of a neutral lipid core and a single layer of phospholipid membrane. It is thought that LDs are generated from the endoplasmic reticulum and then released into the cytosol. Recent studies indicate that LDs can exist in the nucleus, where they play an important role in the maintenance of cell phospholipid homeostasis. However, the details of nuclear lipid droplet (nLD) generation have not yet been clearly characterized. SEIPIN is a nonenzymatic protein encoded by the Berardinelli-Seip congenital lipodystrophy type 2 (BSCL2) gene. It is associated with lipodystrophy diseases. Many recent studies have indicated that SEIPIN is essential for LDs generation. Here, we review much of this research in an attempt to explain the role of SEIPIN in nLD generation. From an integrative perspective, we conclude by proposing a theoretical model to explain how SEIPIN might participate in maintaining homeostasis of lipid metabolism.
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