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. 1976 May 15;156(2):253–264. doi: 10.1042/bj1560253

The androgenic regulation of prostate proteins with a high affinity for deoxyribonucleic acid. Evidence for a prostate deoxyribonucleic acid-unwinding protein.

W I Mainwaring, P S Rennie, J Keen
PMCID: PMC1163744  PMID: 942409

Abstract

1. When testosterone is injected into castrated rats in vivo, a significant increase in the incorporation of [35S]methionine into prostate proteins may be detected under conditions in vitro. 2. Studies based on DNA-cellulose chromatography show that the synthesis of prostate proteins with a high affinity for DNA is particularly enhanced by androgenic stimulation. 3. These changes in protein synthesis are negated when the anti-androgen, cyproterone acetate, is administered concomitantly with testosterone in vivo. 4. Two assays were developed for measuring the strand separation of prostate DNA; first, the retention of 3H-labelled native DNA on nitrocellulose membranes, and second, the activation of native DNA as a template for 9S prostate DNA polymerase. On the basis of these criteria, DNA-unwinding activity is present in the prostate gland and it is regulated by androgens in a steroid-and tissue-specific manner. 5. The results are discussed in the context of the mechanism of action of androgens, particularly since the changes provoked in DNA-unwinding activity by androgens precede the onset of DNA replication and mitosis.

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Selected References

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