Androgen receptor dynamics in the rat ventral prostate.
Androgen receptor dynamics in the rat ventral prostate.
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大鼠腹侧前列腺中的雄激素受体动态。
DOI:
10.1016/0304-4165(85)90286-7
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发表时间:
1985
期刊:
影响因子:
--
通讯作者:
Muldoon,TG
中科院分区:
文献类型:
--
作者:
Steinsapir,J;EvansJr,AC;Bryhan,M;Muldoon,TG
Upon testosterone administration, a dose-dependent cytosolic depletion and nuclear accumulation of androgen receptors in the ventral prostate of 1-day-castrated male rats is observed. Replenishment in the cytosol is rapid with a return to control levels 3 h after testosterone stimulation. The process of nuclear retention (as measured 4–6 h post-injection) is both dose-dependent and time-dependent (there is no retention of the androgen receptor 15 h after testosterone). When assayed 1 h after testosterone, the increase in nuclear binding sites was not sufficient to conclude that the disappearance of cytosolic binding sites could be accounted for by translocation of cytosolic receptors to the nucleus. The cytosolic compartment contained more than 70% of the total cellular receptors whether testosterone was present (in the range 50–400 μg/100 g body wt.) or not. Nuclear processing of androgen receptors is extensive and it is dose-dependent. Turnover of prostatic androgen receptors was studied simultaneously in the cytosolic, microsomal and nuclear compartments 1, 2, 3, 4, 5 and 6 h after testosterone administration. Cytosolic and microsomal depletion-replenishment patterns are similar, displaying a nadir after 1 h and a full replenishment 3–4 h post-testosterone. Cycloheximide, but not actinomycin D, inhibits cytosolic and microsomal replenishment. Nuclear accumulation and retention of androgen receptors is insensitive to both drugs. The very rapid and RNA synthesis-independent turnover of androgen receptors in the ventral prostate suggests that testosterone regulates the receptor levels acutely by both a rapid post-transcriptional positive action and a similarly rapid negative effect on nuclear receptor half-life.
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影响因子:
4
作者:
W. Mainwaring;F. Mangan
通讯作者:
F. Mangan
DOI:
10.1016/0006-291x(68)90507-x
发表时间:
1968
影响因子:
3.1
作者:
E. Frieden;S. Fishel
通讯作者:
S. Fishel
DOI:
10.1016/0005-2736(74)90099-6
发表时间:
1974
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
P. Robel;J. Blondeau;E. Baulieu
通讯作者:
E. Baulieu
影响因子:
56.9
作者:
G. P. Talwar;S. Modi;K. Rao
通讯作者:
K. Rao
影响因子:
4.8
作者:
I. Parikh;W. L. Anderson;P. Neame
通讯作者:
P. Neame