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Androprostamine A: a unique antiprostate cancer agent

A Correction to this article was published on 18 August 2021

This article has been updated


The androgen receptor (AR) is an important therapeutic target for all clinical states of prostate cancer. We screened cultured broths of microorganisms for their ability to suppress androgen-dependent growth of human prostate cancer LNCaP and VCaP cells without cytotoxicity. We have already identified androprostamine A (APA) from a Streptomyces culture broth as a functional inhibitor of AR. APA repressed R1881 (the synthetic androgen methyltrienolone)-induced androgen-regulated gene expression and dramatically inhibited R1881-induced prostate-specific antigen levels. However, APA did not act as an AR antagonist and did not inhibit AR transcriptional activity. Moreover, AS2405, an APA derivative, significantly inhibited the growth of VCaP cells in SCID mice upon oral administration.

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The authors are grateful to Screening Committee of Anticancer Drugs supported by the Grant-in-Aid for Scientific Research on Innovative Areas and to the Scientific Support Programs for Cancer Research, from the Ministry of Education, Culture, Sports, Science and Technology of Japan for supplying the measurements of growth inhibitory activities of 39 human cancer cell lines. This work was supported by Grant-in-Aid for Scientific Research (C) (15K10615).

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YY designed the study, performed the experiments, analyzed data, and wrote the manuscript; HA, CS, and SO performed the experiments; TW, IM, and MK provided discussions and helped write the paper. All the authors discussed the results and approved the manuscript.

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Correspondence to Yohko Yamazaki.

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The original online version of this article was revised: plus the same explanatory text of the problem as in the erratum/correction article.

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Yamazaki, Y., Abe, H., Sakashita, C. et al. Androprostamine A: a unique antiprostate cancer agent. J Antibiot 74, 717–725 (2021).

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