High density lipoprotein inhibits the activation of sterol regulatory element‐binding protein‐1 in cultured cells

High density lipoprotein inhibits the activation of sterol regulatory element‐binding protein‐1 in cultured cells
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高密度脂蛋白抑制培养细胞中甾醇调节元件结合蛋白-1的活化

DOI:
10.1016/j.febslet.2010.02.034
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发表时间:
2010
期刊:
影响因子:
3.5
通讯作者:
Y. Nakaya
Y. Nakaya
中科院分区:
生物学3区
文献类型:
--
作者:
Masaki Yoshida;N. Harada;Keiko Yoshida;Tadahiko Nakagawa;T. Shimohata;K. Mawatari;A. Takahashi;H. Sakaue;Y. Nakaya

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在体外研究了细胞摄取高密度脂蛋白(HDL)和固醇调节元件结合蛋白-1(SREBP-1)调节之间的联系。HDL降低HepG 2和HEK 293细胞核SREBP-1水平以及SREBP-1靶基因表达。然而,HDL没有抑制外源性表达的组成型活性形式的SREBP-1。HDL增加细胞胆固醇水平,甲基-β-环糊精消除细胞胆固醇消除HDL的影响。这些结果表明,HDL通过胆固醇依赖性机制抑制SREBP-1的活化,这可能在调节SREBP-1介导的脂质合成途径中发挥重要作用。
A link between cellular uptake of high density lipoprotein (HDL) and regulation of sterol regulatory element-binding protein-1 (SREBP-1) was investigated in vitro. HDL decreased nuclear SREBP-1 levels as well as SREBP-1 target gene expression in HepG2 and HEK293 cells. However, HDL did not repress an exogenously expressed, constitutively active form of SREBP-1. HDL increased cellular cholesterol levels, and cellular cholesterol depletion by methyl-β-cyclodextrin abolished the effects of HDL. These results suggest that HDL inhibits the activation of SREBP-1 through a cholesterol-dependent mechanism, which may play an important role in regulating lipid synthetic pathways mediated by SREBP-1.
清道夫受体BI促进小鼠肝脏极低密度脂蛋白的产生。
DOI: 10.1194/jlr.m000844
发表时间: 2010
影响因子: 6.5
作者:
Wiersma,Harmen;Nijstad,Niels;Gautier,Thomas;Iqbal,Jahangir;Kuipers,Folkert;Hussain,MMahmood;Tietge,UweJF
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DOI: 10.1172/jci119247
发表时间: 1997-03-01
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通讯作者: Brown, MS
DOI: 10.1242/jcs02866
发表时间: 2006-03-15
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作者:
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通讯作者: Espenshade, PJ