8-bromoadenosine cyclic 3',5'-phosphate rapidly increases 3-hydroxy-3-methylglutaryl coenzyme A reductase mRNA in human granulosa cells: role of cellular sterol balance in controlling the response to tropic stimulation.
8-bromoadenosine cyclic 3',5'-phosphate rapidly increases 3-hydroxy-3-methylglutaryl coenzyme A reductase mRNA in human granulosa cells: role of cellular sterol balance in controlling the response to tropic stimulation.
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8-溴腺苷环 3,5-磷酸快速增加人颗粒细胞中的 3-羟基-3-甲基戊二酰辅酶 A 还原酶 mRNA:细胞甾醇平衡在控制热带刺激反应中的作用。
DOI:
10.1021/bi00409a056
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发表时间:
1988
期刊:
影响因子:
2.9
通讯作者:
Strauss3rd,JF
中科院分区:
文献类型:
--
作者:
Golos,TG;Strauss3rd,JF
Revised Manuscript Received December IQ, 1987 abstract: Exposure of cultured human granulosacells to 8-bromoadenosine cyclic 3', 5'-phosphate (8-bromo-cAMP) resulted in a rapid increase in the content of the mRNA for 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase, a rate-limiting enzyme in the de novo synthesis of cholesterol. HMG-CoA reductase mRNA levels increased within 2 h of stimulation and remained elevated for at least 6 h. Treatment of granulosa cells with 25-hydroxycholesterol, a soluble cholesterol analogue, in combination with aminoglutethimide to block conversion of cellular sterols to pregnenolone, resulted in suppression of HMG-CoA reductase mRNA. When cells were stimulated with 8-bromo-cAMP in the presence of 25-hydroxycholesterol and aminoglutethimide, the increase in HMG-CoA reductase mRNA provoked by the tropic agent was markedly attenuated. This indicates that 8-bromo-cAMP raises HMG-CoA reductase mRNA levels indirectly by accelerating steroidogenesis and depletingcellular sterolpools, thus relieving sterol-mediated negative feedback of HMG-CoA reductase gene expression. 25-Hydroxycholesterol in the presence of aminoglutethimide suppressed low-density lipoprotein (LDL) receptor mRNA, but 8-bromo-cAMP effected a significant stimulation of LDL receptor mRNA levels when added with hydroxysterol and aminoglutethimide. These findings reveal differential regulation of HMG-CoA reductase and LDL receptor mRNAs in the presence of sterol negative feedback.The formation of the corpus luteum from the preovulatory ovarian follicle following ovulation is characterized by a marked increase in the capacity for steroidogenesis in the luteinizing cells. This is the result of the ovulatory surge of LH1 which stimulates increased granulosa cell synthesis of components of the cholesterol side chain cleavage complex (Rodgers et al., 1986, 1987b; Waterman & Simpson, 1985) and the low-density lipoprotein (LDL) receptor (Golos et al.,
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DOI:
10.1016/s0021-9258(17)39242-6
发表时间:
1985-08
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Kenneth L. Luskeyg;Bryn Stevens
通讯作者:
Kenneth L. Luskeyg;Bryn Stevens
DOI:
10.1139/o83-088
发表时间:
1983
期刊:
Canadian journal of biochemistry and cell biology = Revue canadienne de biochimie et biologie cellulaire
影响因子:
--
作者:
Simpson,ER;Waterman,MR
通讯作者:
Waterman,MR
DOI:
--
发表时间:
1986
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Gupta,A;Sexton,RC;Rudney,H
通讯作者:
Rudney,H
DOI:
10.1172/jci113149
发表时间:
1987
期刊:
The Journal of clinical investigation
影响因子:
--
作者:
Golos,TG;Miller,WL;Strauss3rd,JF
通讯作者:
Strauss3rd,JF
DOI:
10.1210/jcem-61-4-633
发表时间:
1985
期刊:
The Journal of clinical endocrinology and metabolism
影响因子:
--
作者:
Golos,TG;Soto,EA;Tureck,RW;Strauss3rd,JF
通讯作者:
Strauss3rd,JF