Lipid droplet functions beyond energy storage.

Lipid droplet functions beyond energy storage.
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DOI:
10.1016/j.bbalip.2017.07.006
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发表时间:
2017-10
期刊:
Biochimica et biophysica acta. Molecular and cell biology of lipids
影响因子:
--
通讯作者:
Gould AP
Gould AP
中科院分区:
其他
文献类型:
--
作者:
Welte MA;Gould AP

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脂滴是储存中性脂质的细胞质细胞器,对能量代谢至关重要。它们在能量存储中的功能已得到牢固确立,并且越来越多地得到表征。然而,新出现的证据表明,脂滴在细胞处理脂质和蛋白质中也发挥着重要和多样的作用,这些脂质和蛋白质可能与能量稳态不直接相关。液滴的脂质处理作用包括疏水性维生素和信号前体的储存,以及内质网和氧化应激的管理。脂滴在蛋白质处理中的作用包括在细胞和病毒多肽的成熟、储存和周转中的功能。脂滴的其他潜在作用可能与它们的细胞内运动有关,在某些情况下,与它们的核定位有关。这种多样性突出表明,脂滴是适应性很强的细胞器,在不同的生物环境中执行不同的功能。
Lipid droplets are cytoplasmic organelles that store neutral lipids and are critically important for energy metabolism. Their function in energy storage is firmly established and increasingly well characterized. However, emerging evidence indicates that lipid droplets also play important and diverse roles in the cellular handling of lipids and proteins that may not be directly related to energy homeostasis. Lipid handling roles of droplets include the storage of hydrophobic vitamin and signaling precursors, and the management of endoplasmic reticulum and oxidative stress. Roles of lipid droplets in protein handling encompass functions in the maturation, storage, and turnover of cellular and viral polypeptides. Other potential roles of lipid droplets may be connected with their intracellular motility and, in some cases, their nuclear localization. This diversity highlights that lipid droplets are very adaptable organelles, performing different functions in different biological contexts.
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