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Abstract Title:

Bisphenol A and its derivatives tetrabromobisphenol A and tetrachlorobisphenol A induce apelin expression and secretion in ovarian cancer cells through a peroxisome proliferator-activated receptor gamma-dependent mechanism.

Abstract Source:

Toxicol Lett. 2017 Jan 19. Epub 2017 Jan 19. PMID: 28111160

Abstract Author(s):

Marta Hoffmann, Elżbieta Fiedor, Anna Ptak

Article Affiliation:

Marta Hoffmann

Abstract:

Epidemiological studies have reported that humans have detectable levels of not only bisphenol A (BPA), but also its halogenated derivatives tetrabromobisphenol A (TBBPA) and tetrachlorobisphenol A (TCBPA), in the serum. Our previous study showed that BPA promotes ovarian cancer progression by directly inducing cell proliferation and migration or by indirectly increasing leptin receptor expression, which creates more binding sites for leptin. In this study, we examined the expression of apelin and its receptor in non-cancer and cancer cell lines derived from the human ovary, and further explored whether the expression of apelin and its receptor is modulated by BPA and its derivatives. We found that the apelin receptor expression level was higher in epithelial cancer cells than in granulosa tumour cells, whereas the reverse was true for apelin expression and secretion. BPA, TBBPA and TCBPA at low nanomolar concentrations increased apelin expression and secretion in the epithelial ovarian cancer cell line OVCAR-3, which involved the peroxisome proliferator-activated receptorγ but not oestrogen receptors. We also found evidence that secreted apelin acts as a mitogenic factor in OVCAR-3 cells, and that BPA intensifies its activity. Taken together, our results suggest that BPA and its derivatives induce ovarian cancer cell progression by up-regulating apelin, which actsas a mitogenic factor in these cells.

Study Type : In Vitro Study

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Sayer Ji
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