Expression and regulation of adrenodoxin and P450scc mRNA in rodent tissues.
Expression and regulation of adrenodoxin and P450scc mRNA in rodent tissues.
复制标题
啮齿动物组织中肾上腺素和 P450scc mRNA 的表达和调节。
DOI:
10.1089/dna.1991.10.339
复制
发表时间:
1991
影响因子:
3.1
通讯作者:
Vaisse,C
中科院分区:
文献类型:
--
作者:
Mellon,SH;Kushner,JA;Vaisse,C
The rate-limiting step in steroidogenesis is the conversion of cholesterol to pregnenolone. This reaction occurs in steroidogenic tissue in the inner mitochondrial membrane, and is mediated by the cholesterol side-chain cleavage enzyme. This enzyme system transfers electrons from NADPH to cholesterol through its three protein components: adrenodoxin reductase, adrenodoxin, and the terminal oxidase, P450scc. We have previously shown that P450scc mRNA is regulated by tropic hormones and cAMP by a cycloheximide-independent mechanism in mouse Leydig tumor MA-10 cells. We now show that the mRNA for adrenodoxin, another component of the cholesterol side-chain cleavage enzyme system, is regulated by tropic hormones and cAMP in MA-10 cells. We cloned rat adrenodoxin cDNA to analyze adrenodoxin mRNA in various rat tissues and in MA-10 cells by RNase protection assays. Adrenodoxin mRNA is found in virtually all rat tissues examined, although it is most abundant in adrenals, ovaries, and testes. MA-10 cells synthesize two species of adrenodoxin mRNA, one of 1.2 kb and the other of 0.8 kb. Both of these adrenodoxin mRNAs are increased approximately six-fold by 1 mM8-Br-cAMP, five-fold by 10 μMforskolin, and three-fold by both 25 ng/ml hCG and by 100 ng/ml LH. Maximal adrenodoxin mRNA accumulation occurs by 4 h of hormonal stimulation. The cAMP-mediated increase in adrenodoxin mRNA accumulation is independent of protein synthesis, since treatment with cycloheximide or puromycin in the absence or presence of cAMP does not inhibit, and even increases, adrenodoxin mRNA accumulation.
登录
查看更多内容
DOI:
--
发表时间:
1989
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Oonk,RB;Krasnow,JS;Beattie,WG;Richards,JS
通讯作者:
Richards,JS
DOI:
--
发表时间:
1987
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Tuls,J;Geren,L;Lambeth,JD;Millett,F
通讯作者:
Millett,F
影响因子:
2.7
作者:
Y. Sagara;H. Sawae;A. Kimura;Y. Sagara;K. Morohashi;K. Miyoshi;T. Horiuchi
通讯作者:
T. Horiuchi
DOI:
10.1016/s0021-9258(19)44275-0
发表时间:
1973
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
M. Tanaka;M. Haniu;K. Yasunobu;T. Kimura
通讯作者:
T. Kimura
DOI:
10.1089/dna.1988.7.609
发表时间:
1988
期刊:
DNA (Mary Ann Liebert, Inc.)
影响因子:
--
作者:
Chang,CY;Wu,DA;Lai,CC;Miller,WL;Chung,BC
通讯作者:
Chung,BC