Effects of Cytokines, Butyrate and Dexamethasone on Serum Amyloid A and Apolipoprotein A‐I Synthesis in Human HUH‐7 Hepatoma Cells
Effects of Cytokines, Butyrate and Dexamethasone on Serum Amyloid A and Apolipoprotein A‐I Synthesis in Human HUH‐7 Hepatoma Cells
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细胞因子、丁酸盐和地塞米松对人 HUH-7 肝癌细胞血清淀粉样蛋白 A 和载脂蛋白 A-I 合成的影响
DOI:
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发表时间:
1999
影响因子:
3.7
通讯作者:
Sattler
中科院分区:
文献类型:
--
作者:
Mallé;Leonhard;Knipping;Sattler
Serum amyloid A (SAA) and apolipoprotein A‐I (apo A‐I) are secreted by the liver. As concentrations of both apolipoproteins are inversely related under normal and acute‐phase conditions, human HUH‐7 hepatoma cells were stimulated with interleukin (IL)‐1α (100 and 200 U), IL‐6 (50 and 100 U), butyrate (2 m m) and dexamethasone (2 × 10−7 m and 1 × 10−6 m), alone or in combination. Changes in SAA and apo A‐I synthesis were monitored after metabolic labelling of the cells with [35S]‐methionine. Intracellular and secreted SAA and apo A‐I were immunoprecipitated, separated by sodium dodecyl sulphate–polyacrylamide gel electrophoresis (SDS–PAGE), and the radioactivity in the corresponding bands was counted. Intracellular apolipoprotein levels were increased by all stimuli, either alone or in combination, between 2.7‐ and 5.5‐fold (SAA) and between 2.8‐ and 4.1‐fold (apo A‐I), respectively. In a similar manner, apolipoprotein levels secreted by HUH‐7 cells were increased between 3.1‐ and 4.3‐fold (SAA) and between 1.9‐ and 3.3‐fold (apo A‐I). Co‐administration of cytokines, butyrate and/or dexamethasone had no pronounced synergistic effect on intracellular biosynthesis and secretion of SAA and apo A‐I. The results from the present study suggest that apo A‐I must not necessarily be considered as a negative acute‐phase reactant.
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影响因子:
6.5
作者:
K. Feingold;Ingibjorg Hardardottir;R. Memon;Eveline J. T. Krul;Arthur H. Maser;John M. Taylor;Carl Grunfeld
通讯作者:
K. Feingold;Ingibjorg Hardardottir;R. Memon;Eveline J. T. Krul;Arthur H. Maser;John M. Taylor;Carl Grunfeld
DOI:
10.1016/s0021-9258(18)34048-1
发表时间:
1982-09
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
J. S. Hoffman;E. Benditt
通讯作者:
J. S. Hoffman;E. Benditt
DOI:
10.1016/s0006-291x(88)80043-3
发表时间:
1988-11-30
影响因子:
3.1
作者:
GANAPATHI, MK;MAY, LT;KUSHNER, I
通讯作者:
KUSHNER, I
DOI:
10.1161/01.atv.14.1.8
发表时间:
1994-01-01
期刊:
ARTERIOSCLEROSIS AND THROMBOSIS
影响因子:
--
作者:
ETTINGER, WH;VARMA, VK;VERDERY, PB
通讯作者:
VERDERY, PB
DOI:
--
发表时间:
1994
期刊:
The Journal of rheumatology
影响因子:
--
作者:
Rokita,H;Loose,LD;Bartle,LM;Sipe,JD
通讯作者:
Sipe,JD