Tip60-mediated lipin 1 acetylation and ER translocation determine triacylglycerol synthesis rate.
Tip60-mediated lipin 1 acetylation and ER translocation determine triacylglycerol synthesis rate.
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Tip60介导的脂质1乙酰化和ER易位决定三酰甘油合成率
DOI:
10.1038/s41467-018-04363-w
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发表时间:
2018-05-15
影响因子:
16.6
通讯作者:
Lin SC
中科院分区:
文献类型:
--
作者:
Li TY;Song L;Sun Y;Li J;Yi C;Lam SM;Xu D;Zhou L;Li X;Yang Y;Zhang CS;Xie C;Huang X;Shui G;Lin SY;Reue K;Lin SC
Obesity is characterized by excessive fatty acid conversion to triacylglycerols (TAGs) in adipose tissues. However, how signaling networks sense fatty acids and connect to the stimulation of lipid synthesis remains elusive. Here, we show that homozygous knock-in mice carrying a point mutation at the Ser86phosphorylation site of acetyltransferaseTip60(Tip60SA/SA) display remarkably reduced body fat mass, andTip60SA/SAfemales fail to nurture pups to adulthood due to severely reduced milk TAGs. Mechanistically, fatty acids stimulate Tip60-dependent acetylation and endoplasmic reticulum translocation of phosphatidic acid phosphatase lipin 1 to generate diacylglycerol for TAG synthesis, which is repressed by deacetylase Sirt1. Inhibition of Tip60 activity strongly blocks fatty acid-induced TAG synthesis while Sirt1 suppression leads to increased adiposity. Genetic analysis of loss-of-function mutants inSaccharomyces cerevisiaereveals a requirement of ESA1, yeast ortholog of Tip60, in TAG accumulation. These findings uncover a conserved mechanism linking fatty acid sensing to fat synthesis.
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影响因子:
29
作者:
Cortés VA;Curtis DE;Sukumaran S;Shao X;Parameswara V;Rashid S;Smith AR;Ren J;Esser V;Hammer RE;Agarwal AK;Horton JD;Garg A
通讯作者:
Garg A
影响因子:
5.2
作者:
Kwon H;Pessin JE
通讯作者:
Pessin JE
影响因子:
11.1
作者:
Krahmer, Natalie;Farese, Robert V., Jr.;Walther, Tobias C.
通讯作者:
Walther, Tobias C.
影响因子:
16
作者:
Charvet C;Wissler M;Brauns-Schubert P;Wang SJ;Tang Y;Sigloch FC;Mellert H;Brandenburg M;Lindner SE;Breit B;Green DR;McMahon SB;Borner C;Gu W;Maurer U
通讯作者:
Maurer U
影响因子:
29
作者:
Chalkiadaki A;Guarente L
通讯作者:
Guarente L