The apolipoprotein B gene is constitutively expressed in HepG2 cells: regulation of secretion by oleic acid, albumin, and insulin, and measurement of the mRNA half-life.
The apolipoprotein B gene is constitutively expressed in HepG2 cells: regulation of secretion by oleic acid, albumin, and insulin, and measurement of the mRNA half-life.
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载脂蛋白 B 基因在 HepG2 细胞中组成型表达:通过油酸、白蛋白和胰岛素调节分泌,并测量 mRNA 半衰期。
DOI:
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发表时间:
1989
影响因子:
6.5
通讯作者:
James Scott
中科院分区:
文献类型:
--
作者:
C. Pullinger;Julia D. North;B. Teng;Vincent A. Rifici;A. E. R. de;Brito;James Scott
The objective of this study was to establish conditions whereby apoB secreted from HepG2 cells could be regulated over a wide range, and to determine whether changes of output were correlated with the level of apoB mRNA. The presence of oleate (complexed to 3% albumin at a molar ratio of 1.7:1) resulted in a 3.5-fold stimulation of apoB secretion that was apparent after only 3 h. Insulin halved the rate of apoB output and the inhibition was detectable within the physiological insulin range, but was not apparent until 12-16 h. Albumin in the culture medium had a dose-dependent inhibitory effect on apoB production. Overall, apoB secretion from HepG2 cells was modulated over a 7-fold range. However, when apoB mRNA was assayed by slot-blot hybridization, no change was detectable under any of the conditions that modulated apoB output. Quantitative solution hybridization was used to confirm that oleate did not affect the level of apoB mRNA. Kinetic analysis of the decay of [3H]uridine-labeled apoB mRNA showed that the half-life of apoB mRNA was 16 h. We conclude from these studies that the apoB gene is constitutively expressed in HepG2 cells and that the mechanism of acute regulation of apoB production by these cells must involve co- or post-translational processes.
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影响因子:
6.5
作者:
Coleman,RA;Haynes,EB;Sand,TM;Davis,RA
通讯作者:
Davis,RA
DOI:
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发表时间:
1986
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Patsch,W;GottoJr,AM;Patsch,JR
通讯作者:
Patsch,JR
DOI:
--
发表时间:
1987
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Lusis,AJ;Taylor,BA;Quon,D;Zollman,S;LeBoeuf,RC
通讯作者:
LeBoeuf,RC
DOI:
10.1016/b978-0-12-024921-3.50007-1
发表时间:
1985
期刊:
Advances in lipid research
影响因子:
--
作者:
Sparks,JD;Sparks,CE
通讯作者:
Sparks,CE
影响因子:
6.5
作者:
Davidson,NO;Carlos,RC;Drewek,MJ;Parmer,TG
通讯作者:
Parmer,TG