Screening of synthetic and plant-derived compounds for (anti)estrogenic and (anti)androgenic activities

T.F.H. Bovee, W.G.E.J. Schoonen, A.R.M. Hamers, M.J. Bento, A.A.C.M. Peijnenburg

    Research output: Contribution to journalArticleAcademicpeer-review

    70 Citations (Scopus)

    Abstract

    Recently we constructed yeast cells that either express the human estrogen receptor ¿ or the human androgen receptor in combination with a consensus ERE or ARE repeat in the promoter region of a green fluorescent protein (yEGFP) read-out system. These bioassays were proven to be highly specific for their cognate agonistic compounds. In this study the value of these yeast bioassays was assessed for analysis of compounds with antagonistic properties. Several pure antagonists, selective estrogen receptor modulators (SERMs) and plant-derived compounds were tested. The pure antiestrogens ICI 182,780 and RU 58668 were also classified as pure ER antagonists in the yeast estrogen bioassay and the pure antiandrogen flutamide was also a pure AR antagonist in the yeast androgen bioassay. The plant-derived compounds flavone and guggulsterone displayed both antiestrogenic and antiandrogenic activities, while 3,3¿-diindolylmethane (DIM) and equol combined an estrogenic mode of action with an antiandrogenic activity. Indol-3-carbinol (I3C) only showed an antiandrogenic activity. Coumestrol, genistein, naringenin and 8-prenylnaringenin were estrogenic and acted additively, while the plant sterols failed to show any effect. Although hormonally inactive, in vitro and in vivo metabolism of the aforementioned plant sterols may still lead to the formation of active metabolites in other test systems.
    Original languageEnglish
    Pages (from-to)1111-1119
    JournalAnalytical and Bioanalytical Chemistry
    Volume390
    Issue number4
    DOIs
    Publication statusPublished - 2008

    Keywords

    • human estrogen-receptor
    • in-vitro
    • prostate-cancer
    • breast-cancer
    • pure antiestrogen
    • er-beta
    • alpha
    • cells
    • vivo
    • mechanism

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