Polyunsaturated fatty acids promote the rapid fusion of lipid droplets in Caenorhabditis elegans.
Polyunsaturated fatty acids promote the rapid fusion of lipid droplets in Caenorhabditis elegans.
复制标题
多不饱和脂肪酸促进秀丽隐杆线虫脂滴的快速融合。
DOI:
10.1016/j.jbc.2022.102179
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发表时间:
2022-08
影响因子:
4.8
通讯作者:
Liang, Bin
中科院分区:
文献类型:
--
作者:
Wang, Yanli;Li, Chunxia;Zhang, Jingjing;Xu, Xiumei;Fu, Lin;Xu, Jie;Zhu, Hong;Hu, Ying;Li, Chengbin;Wang, Mengjie;Wu, Yingjie;Zou, Xiaoju;Liang, Bin
Lipid droplets (LDs) are intracellular organelles that dynamically regulate lipids and energy homeostasis in the cell. LDs can grow through either local lipid synthesis or LD fusion. However, how lipids involving in LD fusion for LD growth is largely unknown. Here, we show that genetic mutation of acox-3 (acyl-CoA oxidase), maoc-1 (enoyl-CoA hydratase), dhs-28 (3-hydroxylacyl-CoA dehydrogenase), and daf-22 (3-ketoacyl-CoA thiolase), all involved in the peroxisomal β-oxidation pathway in Caenorhabditis elegans, led to rapid fusion of adjacent LDs to form giant LDs (gLDs). Mechanistically, we show that dysfunction of peroxisomal β-oxidation results in the accumulation of long-chain fatty acid-CoA and phosphocholine, which may activate the sterol-binding protein 1/sterol regulatory element–binding protein to promote gLD formation. Furthermore, we found that inactivation of either FAT-2 (delta-12 desaturase) or FAT-3 and FAT-1 (delta-15 desaturase and delta-6 desaturase, respectively) to block the biosynthesis of polyunsaturated fatty acids (PUFAs) with three or more double bonds (n≥3-PUFAs) fully repressed the formation of gLDs; in contrast, dietary supplementation of n≥3-PUFAs or phosphocholine bearing these PUFAs led to recovery of the formation of gLDs in peroxisomal β-oxidation–defective worms lacking PUFA biosynthesis. Thus, we conclude that n≥3-PUFAs, distinct from other well-known lipids and proteins, promote rapid LD fusion leading to LD growth.
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影响因子:
3.7
作者:
Brooks KK;Liang B;Watts JL
通讯作者:
Watts JL
影响因子:
4.5
作者:
Fan W;Lam SM;Xin J;Yang X;Liu Z;Liu Y;Wang Y;Shui G;Huang X
通讯作者:
Huang X
DOI:
10.1083/jcb.201505067
发表时间:
2015-10-26
期刊:
The Journal of cell biology
影响因子:
--
作者:
Choudhary V;Ojha N;Golden A;Prinz WA
通讯作者:
Prinz WA
影响因子:
64.8
作者:
Guo, Yi;Walther, Tobias C.;Farese, Robert V., Jr.
通讯作者:
Farese, Robert V., Jr.
影响因子:
9.8
作者:
Kniazeva M;Crawford QT;Seiber M;Wang CY;Han M
通讯作者:
Han M