The ER-associated degradation adaptor protein Sel1L regulates LPL secretion and lipid metabolism.
The ER-associated degradation adaptor protein Sel1L regulates LPL secretion and lipid metabolism.
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ER 相关降解接头蛋白 Sel1L 调节 LPL 分泌和脂质代谢。
DOI:
10.1016/j.cmet.2014.06.015
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发表时间:
2014-09-02
期刊:
影响因子:
29
通讯作者:
Qi L
中科院分区:
文献类型:
--
作者:
Sha H;Sun S;Francisco AB;Ehrhardt N;Xue Z;Liu L;Lawrence P;Mattijssen F;Guber RD;Panhwar MS;Brenna JT;Shi H;Xue B;Kersten S;Bensadoun A;Péterfy M;Long Q;Qi L
Sel1L is an essential adaptor protein for the E3 ligase Hrd1 in the endoplasmic reticulum-associated degradation (ERAD), a universal quality-control system in the cell; but its physiological role remains unclear. Here we show that mice with adipocyte-specific Sel1L deficiency are resistant to diet-induced obesity and exhibit postprandial hypertriglyceridemia. Further analyses reveal that Sel1L is indispensable for the secretion of lipoprotein lipase (LPL), independently of its role in Hrd1-mediated ERAD and ER homeostasis. Sel1L physically interacts and stabilizes the LPL maturation complex consisted of LPL and lipase-maturation factor 1 (LMF1). In the absence of Sel1L, LPL is retained in the ER and form protein aggregates, which are degraded primarily by autophagy. The Sel1L-mediated control of LPL secretion is also seen in other LPL-expressing cell types including cardiac myocytes and macrophages. Thus, our study reports a role of Sel1L in LPL secretion and systemic lipid metabolism.
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DOI:
10.1007/978-1-61779-474-2_32
发表时间:
2012
期刊:
Methods in molecular biology (Clifton, N.J.)
影响因子:
--
作者:
Houck, Scott A;Singh, Sangita;Cyr, Douglas M
通讯作者:
Cyr, Douglas M
DOI:
10.1073/pnas.0805371105
发表时间:
2008-08-26
影响因子:
11.1
作者:
Mueller, Britta;Klemm, Elizabeth J.;Ploegh, Hidde L.
通讯作者:
Ploegh, Hidde L.
影响因子:
3.5
作者:
Fujita, Eriko;Kouroku, Yoriko;Momoi, Takashi
通讯作者:
Momoi, Takashi
影响因子:
5.8
作者:
Chan, D. C.;Pang, J.;Watts, G. F.
通讯作者:
Watts, G. F.
影响因子:
29
作者:
Eguchi J;Wang X;Yu S;Kershaw EE;Chiu PC;Dushay J;Estall JL;Klein U;Maratos-Flier E;Rosen ED
通讯作者:
Rosen ED