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.
复制标题

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
复制
发表时间:
1988
期刊:
影响因子:
2.9
通讯作者:
Strauss3rd,JF
Strauss3rd,JF
中科院分区:
生物学3区
文献类型:
--
作者:
Golos,TG;Strauss3rd,JF

文献摘要

参考文献

被引文献

相似文献

修订后的手稿收到 1987 年 12 月 IQ 摘要:将培养的人颗粒细胞暴露于 8-溴腺苷环 3', 5'-磷酸 (8-溴-cAMP) 导致 3-羟基-3-甲基戊二酰辅酶 A (HMG-CoA) 还原酶(胆固醇从头合成中的限速酶)的 mRNA 含量快速增加。 HMG-CoA 还原酶 mRNA 水平在刺激后 2 小时内增加,并保持升高至少 6 小时。用 25-羟基胆固醇(一种可溶性胆固醇类似物)与氨基鲁米特联合处理颗粒细胞以阻止细胞甾醇转化为孕烯醇酮,导致 HMG-CoA 还原酶 mRNA 的抑制。当在 25-羟基胆固醇和氨基鲁米特存在的情况下用 8-溴-cAMP 刺激细胞时,热带剂引起的 HMG-CoA 还原酶 mRNA 的增加明显减弱。这表明 8-bromo-cAMP 通过加速类固醇生成和消耗细胞甾醇库间接提高 HMG-CoA 还原酶 mRNA 水平,从而缓解甾醇介导的 HMG-CoA 还原酶基因表达的负反馈。氨基鲁米特存在下的 25-羟基胆固醇可抑制低密度脂蛋白 (LDL) 受体 mRNA,但当添加羟基甾醇和氨基鲁米特时,8-溴-cAMP 可显着刺激 LDL 受体 mRNA 水平。这些发现揭示了在甾醇负反馈存在的情况下HMG-CoA还原酶和LDL受体mRNA的差异调节。排卵后从排卵前卵泡形成黄体的特征是黄体细胞中类固醇生成能力显着增加。这是 LH1 排卵激增的结果,LH1 刺激颗粒细胞合成胆固醇侧链裂解复合物成分的增加(Rodgers 等,1986,1987b;Waterman & Simpson,1985)和低密度脂蛋白(LDL)受体(Golos 等,
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.,
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
ACTH 对肾上腺皮质类固醇激素生物合成的调节。
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
人绒毛膜促性腺激素和 8-溴环单磷酸腺苷通过放线菌酮不敏感机制促进培养的人颗粒细胞中细胞色素 P450scc 和肾上腺素信使 RNA 的急剧增加。
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
人绒毛膜促性腺激素和 8-溴腺苷 3,5-一磷酸刺激培养物中黄素化人颗粒细胞的 [125I] 低密度脂蛋白摄取和代谢。
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