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运动性在哺乳动物脂滴的生命周期中起着重要作用。

Motility Plays an Important Role in the Lifetime of Mammalian Lipid Droplets.

作者信息

Jin Yi, Ren Zhuqing, Tan Yanjie, Zhao Pengxiang, Wu Jian

机构信息

Key Laboratory of Agriculture Animal Genetics, Breeding and Reproduction of the Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.

Institute of Biomedical Sciences, Key Laboratory of Animal Resistance Biology of Shandong Province, College of Life Sciences, Shandong Normal University, Jinan 250014, China.

出版信息

Int J Mol Sci. 2021 Apr 7;22(8):3802. doi: 10.3390/ijms22083802.

Abstract

The lipid droplet is a kind of organelle that stores neutral lipids in cells. Recent studies have found that in addition to energy storage, lipid droplets also play an important role in biological processes such as resistance to stress, immunity, cell proliferation, apoptosis, and signal transduction. Lipid droplets are formed at the endoplasmic reticulum, and mature lipid droplets participate in various cellular processes. Lipid droplets are decomposed by lipase and lysosomes. In the life of a lipid droplet, the most important thing is to interact with other organelles, including the endoplasmic reticulum, mitochondria, peroxisomes, and autophagic lysosomes. The interaction between lipid droplets and other organelles requires them to be close to each other, which inevitably involves the motility of lipid droplets. In fact, through many microscopic observation techniques, researchers have discovered that lipid droplets are highly dynamic organelles that move quickly. This paper reviews the process of lipid droplet motility, focusing on explaining the molecular basis of lipid droplet motility, the factors that regulate lipid droplet motility, and the influence of motility on the formation and decomposition of lipid droplets. In addition, this paper also proposes several unresolved problems for lipid droplet motility. Finally, this paper makes predictions about the future research of lipid droplet motility.

摘要

脂滴是细胞内储存中性脂质的一种细胞器。最近的研究发现,脂滴除了具有能量储存功能外,在抗应激、免疫、细胞增殖、凋亡及信号转导等生物学过程中也发挥着重要作用。脂滴在内质网处形成,成熟的脂滴参与各种细胞过程。脂滴由脂肪酶和溶酶体分解。在脂滴的生命周期中,最重要的是与包括内质网、线粒体、过氧化物酶体和自噬溶酶体在内的其他细胞器相互作用。脂滴与其他细胞器之间的相互作用要求它们彼此靠近,这不可避免地涉及脂滴的运动性。事实上,通过许多显微观察技术,研究人员发现脂滴是高度动态的细胞器,移动速度很快。本文综述了脂滴运动的过程,重点解释了脂滴运动的分子基础、调节脂滴运动的因素以及运动对脂滴形成和分解的影响。此外,本文还提出了几个关于脂滴运动尚未解决的问题。最后,本文对脂滴运动的未来研究进行了预测。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dd94/8067576/75cac3257750/ijms-22-03802-g001.jpg

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