Phytoestrogens act as estrogen agonists in an estrogen-responsive pituitary cell line.

Phytoestrogens act as estrogen agonists in an estrogen-responsive pituitary cell line.
复制标题

植物雌激素在雌激素反应性垂体细胞系中充当雌激素激动剂。

DOI:
10.1006/taap.1998.8500
复制
发表时间:
1998
期刊:
Toxicology and applied pharmacology.
影响因子:
--
通讯作者:
Gray,WG
Gray,WG
中科院分区:
--
文献类型:
--
作者:
Stahl,S;Chun,TY;Gray,WG

文献摘要

参考文献

被引文献

相似文献

人们对天然植物产品的药用价值重新产生了兴趣。一组植物化合物,即植物雌激素(PE),因其能够降低某些雌激素依赖性癌症的发病率而受到相当大的关注。在本研究中,我们利用永生化垂体细胞系 PR1 评估 PE 对雌激素依赖性垂体肿瘤细胞的影响。研究发现几种 PE 在 PR1 细胞中具有活性,因为它们与雌激素受体 (ER) 结合,刺激 PR1 细胞生长,并诱导雌激素反应和催乳素分泌。 PE 金雀异黄酮、香豆雌酚和玉米赤霉烯酮与 PR1 细胞中的 ER 结合,其亲和力比雌二醇低 100 倍。然而,白藜芦醇(一种在葡萄中发现的植物抗肿瘤剂)与 ER 没有显着的结合。研究发现玉米赤霉烯酮、香豆雌酚和金雀异黄素可诱导催乳素分泌并刺激生长,而白藜芦醇则显示催乳素分泌但不刺激生长。 PE 在 PR1 细胞中的雌激素作用是 ER 依赖性的,因为添加抗雌激素 ICI-182,780 会抑制催乳素反应。尽管白藜芦醇不与 ER 结合或刺激生长,但它以剂量和时间依赖性方式诱导催乳素分泌。这里提供的数据表明 PE 在垂体泌乳素细胞中具有活性。
There is renewed interest in the medicinal value of natural plant products. One group of plant compounds, the phytoestrogens (PE), has been given considerable attention due to their ability to decrease the incidence of certain estrogen-dependent cancers. In this study, we evaluate the effects of PE on estrogen-dependent pituitary tumor cells by using the immortalized pituitary cell line PR1. Several PE were found to be active in PR1 cells, in that they bound to the estrogen receptor (ER), stimulated growth of PR1 cells, and induced an estrogenic response, prolactin secretion. The PE genistein, coumestrol, and zearalenone bound to the ER present in PR1 cells with an affinity 100-times lower than that of estradiol. However, resveratrol, a plant antitumor agent found in grapes, showed no significant binding to the ER. Zearalenone, coumestrol, and genistein were found to induce prolactin secretion and to stimulate growth, whereas resveratrol showed prolactin secretion but no growth stimulation. The estrogenic effects of PE in PR1 cells were ER dependent, in that addition of the antiestrogen ICI-182,780 inhibited prolactin response. Although resveratrol did not bind to the ER or stimulate growth, it induced prolactin secretion in both a dose- and time-dependent manner. The data presented here demonstrate that PE are active in lactotroph cells of the pituitary.
怀孕大鼠子宫中的低亲和力雌激素结合位点:分析和部分纯化。
DOI: 10.1073/pnas.91.24.11502
发表时间: 1994
影响因子: 11.1
作者:
W. Gray;E. Biswas;N. Bashirelahi;S. Biswas
通讯作者: S. Biswas
无细胞系统中雌激素受体依赖性转录机制
DOI: 10.1128/mcb.10.12.6607-6612.1990
发表时间: 1990
影响因子: 5.3
作者:
J. F. Elliston;S. Fawell;L. Klein;S. Tsai;M. Tsai;M. Parker;B. O’Malley
通讯作者: B. O’Malley
大鼠垂体细胞中催乳素前体 mRNA 的可能核前体。
DOI: --
发表时间: 1981
期刊: The Journal of biological chemistry
影响因子: --
作者:
Hoffman,LM;Fritsch,MK;Gorski,J
通讯作者: Gorski,J
雌激素结合是原代大鼠子宫细胞中的非合作过程。
DOI: 10.1210/endo-126-5-2383
发表时间: 1990
期刊: Endocrinology
影响因子: 4.8
作者:
Walent,JH;Gorski,J
通讯作者: Gorski,J
香雌酚和雌马酚对大鼠生殖道发育的​​影响
DOI: 10.3181/00379727-208-43833
发表时间: 1995
影响因子: --
作者:
K. Medlock;W. Branham;D. Sheehan
通讯作者: D. Sheehan