Excessive Levels of Diverse Phytoestrogens Can Modulate Steroidogenesis and Cell Migration of KGN Human Granulosa-derived Tumor Cells

Overview

Journal Toxicol Rep

Date 2017 Oct 1

PMID 28962252

Citations 14

Authors

Kamila A Solak

Fiona M J Wijnolts

Sandra M Nijmeijer

Bas J Blaauboer

Martin van den Berg

Majorie B M van Duursen

Affiliations

Soon will be listed here.

Abstract

Phytoestrogens are plant-derived estrogen-like compounds that are increasingly used for their suggested health promoting properties, even by healthy, young women. However, scientific concerns exist regarding potential adverse effects on female reproduction. In this study, naringenin (NAR), 8-prenylnaringenin (8-PN), genistein (GEN), coumestrol (COU), quercetin (QUE) and resveratrol (RSV) up-regulated steroidogenic acute regulatory protein () mRNA levels in KGN human granulosa-like tumor cells. Most of the phytoestrogens tested also increased (aromatase) mRNA levels activation of ovary-specific and promoters. Yet, only NAR (3 and 10 μM), COU (10 and 30 μM) and QUE (10 μM) also statistically significantly induced aromatase activity in KGN cells after 24 h. 8-PN, aromatase inhibitor letrozole and estrogen receptor antagonist ICI 182,780 concentration-dependently inhibited aromatase activity with IC values of 8 nM, 10 nM and 72 nM, respectively. Co-exposure with ICI 182,780 (0.1 μM) statistically significantly attenuated the induction of aromatase activity by QUE and COU, but not NAR. Cell cycle status and proliferation of KGN cells were not affected by any of the phytoestrogens tested. Nonetheless, the migration of KGN cells was significantly reduced with approximately 30% by COU, RSV and QUE and 46% by GEN at 10 μM, but not NAR and 8-PN. Our results indicate that phytoestrogens can affect various pathways in granulosa-like cells at concentrations that can be found in plasma upon supplement intake. This implies that phytoestrogens may interfere with ovarian function and caution is in place regarding the use of supplements with high contents of phytoestrogens.

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