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. 1971 Nov;125(1):285–295. doi: 10.1042/bj1250285

A reconstituted cell-free system for the specific transfer of steroid–receptor complexes into nuclear chromatin isolated from rat ventral prostate gland

W I P Mainwaring 1, Brenda M Peterken 1
PMCID: PMC1178052  PMID: 5158914

Abstract

1. A system has been developed for the specific transfer of [3H]dihydrotestosterone–receptor complexes into prostatic chromatin in vitro. 2. Under optimum conditions the overall transfer of [3H]dihydrotestosterone into purified chromatin in this reconstituted system is entirely consistent with the results obtained in whole tissue both in vivo and in vitro. 3. The transfer of [3H]dihydrotestosterone into chromatin is tissue-specific and maximal into chromatin isolated from androgen-dependent tissues. 4. The tissue specificity is maintained at two levels: first, in the presence of specific cytoplasmic androgen-receptor proteins; secondly, by the nature and composition of the chromatin itself. 5. Evidence is presented that androgenic steroids in vivo may maintain the tissue-specific nature of chromatin in androgen-dependent tissues by the selective induction of nuclear protein synthesis. 6. The relevance of these findings to the mechanism of action of androgenic steroids is discussed.

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Selected References

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