mmBCFA C17iso ensures endoplasmic reticulum integrity for lipid droplet growth.
mmBCFA C17iso ensures endoplasmic reticulum integrity for lipid droplet growth.
复制标题
mmBCFA C17iso 确保内质网完整性以促进脂滴生长
DOI:
10.1083/jcb.202102122
复制
发表时间:
2021-11-01
期刊:
影响因子:
--
通讯作者:
Liang B
中科院分区:
文献类型:
--
作者:
Zhang J;Hu Y;Wang Y;Fu L;Xu X;Li C;Xu J;Li C;Zhang L;Yang R;Jiang X;Wu Y;Liu P;Zou X;Liang B
This study describes a unique monomethyl branched-chain fatty acid, C17iso, as the side chain of phospholipids to ensure endoplasmic reticulum integrity for lipid droplet growth in an intact organism, Caenorhabditis elegans. In eukaryote cells, lipid droplets (LDs) are key intracellular organelles that dynamically regulate cellular energy homeostasis. LDs originate from the ER and continuously contact the ER during their growth. How the ER affects LD growth is largely unknown. Here, we show that RNAi knockdown of acs-1, encoding an acyl-CoA synthetase required for the biosynthesis of monomethyl branched-chain fatty acids C15iso and C17iso, remarkably prevented LD growth in Caenorhabditis elegans. Dietary C17iso, or complex lipids with C17iso including phosphatidylcholine, phosphatidylethanolamine, and triacylglycerol, could fully restore the LD growth in the acs-1RNAi worms. Mechanistically, C17iso may incorporate into phospholipids to ensure the membrane integrity of the ER so as to maintain the function of ER-resident enzymes such as SCD/stearoyl-CoA desaturase and DGAT2/diacylglycerol acyltransferase for appropriate lipid synthesis and LD growth. Collectively, our work uncovers a unique fatty acid, C17iso, as the side chain of phospholipids for determining the ER homeostasis for LD growth in an intact organism, C. elegans.
登录
查看更多内容
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:
Brock, Trisha J.;Browse, John;Watts, Jennifer L.
通讯作者:
Watts, Jennifer L.
影响因子:
10.5
作者:
Kniazeva, Marina;Shen, Huali;Han, Min
通讯作者:
Han, Min
影响因子:
64.8
作者:
Fu, Suneng;Yang, Ling;Li, Ping;Hofmann, Oliver;Dicker, Lee;Hide, Winston;Lin, Xihong;Watkins, Steven M.;Ivanov, Alexander R.;Hotamisligil, Goekhan S.
通讯作者:
Hotamisligil, Goekhan S.
影响因子:
9.8
作者:
Kniazeva M;Crawford QT;Seiber M;Wang CY;Han M
通讯作者:
Han M