» Articles » PMID: 36497816

Bisphenol AF Promoted the Growth of Uterus and Activated Estrogen Signaling Related Targets in Various Tissues of Nude Mice with SK-BR-3 Xenograft Tumor

Overview
Publisher MDPI
Date 2022 Dec 11
PMID 36497816
Authors
Affiliations
Soon will be listed here.
Abstract

Environmental estrogens can promote the growth, migration, and invasion of breast cancer. However, few studies evaluate adverse health impacts of environmental estrogens on other organs of breast cancer patients. Therefore, the present study investigated the effects of environmental estrogen bisphenol AF (BPAF) on the main organs of female Balb/cA nude mice with SK-BR-3 xenograft tumor by detecting the organ development and gene expression of targets associated with G protein-coupled estrogen receptor 1 (GPER1)-mediated phosphatidylinositol 3-kinase/protein kinase B (PI3K/Akt) and mitogen-activated protein kinase (MAPK) signaling pathways in hypothalamus, ovary, uterus, liver, and kidney. The results showed that BPAF at 20 mg/kg bw/day markedly increased the uterine weight and the uterine coefficient of nude mice compared to SK-BR-3 bearing tumor control, indicating that BPAF promoted the growth of uterus due to its estrogenic activity. Additionally, BPAF significantly up-regulated the mRNA relative expression of most targets related to nuclear estrogen receptor alpha (ERα) and GPER1-mediated signaling pathways in the hypothalamus, followed by the ovary and uterus, and the least in the liver and kidney, indicating that BPAF activated different estrogen activity related targets in different tissues. In addition, BPAF markedly up-regulated the mRNA expression of GPER1 in all tested tissues, and the molecular docking showed that BPAF could dock into GPER1. Because gene change is an early event of toxicity response, these findings suggested that BPAF might aggravate the condition of breast cancer patients through exerting its estrogenic activity via the GPER1 pathway in various organs.

Citing Articles

Epigenetic Mechanisms of Endocrine-Disrupting Chemicals in Breast Cancer and Their Impact on Dietary Intake.

Singh D J Xenobiot. 2025; 15(1.

PMID: 39846533 PMC: 11755457. DOI: 10.3390/jox15010001.


Impact of Endocrine Disruptors on the Genitourinary Tract.

Caneparo C, Carignan L, Lonina E, Goulet S, Pellerin F, Chabaud S J Xenobiot. 2024; 14(4):1849-1888.

PMID: 39728407 PMC: 11676856. DOI: 10.3390/jox14040099.

References
1.
Fujimoto T, Kitamura S, Sanoh S, Sugihara K, Yoshihara S, Fujimoto N . Estrogenic activity of an environmental pollutant, 2-nitrofluorene, after metabolic activation by rat liver microsomes. Biochem Biophys Res Commun. 2003; 303(2):419-26. DOI: 10.1016/s0006-291x(03)00311-5. View

2.
Newbold R, Jefferson W, Padilla-Banks E . Long-term adverse effects of neonatal exposure to bisphenol A on the murine female reproductive tract. Reprod Toxicol. 2007; 24(2):253-8. PMC: 2043380. DOI: 10.1016/j.reprotox.2007.07.006. View

3.
Barton M, Filardo E, Lolait S, Thomas P, Maggiolini M, Prossnitz E . Twenty years of the G protein-coupled estrogen receptor GPER: Historical and personal perspectives. J Steroid Biochem Mol Biol. 2017; 176:4-15. PMC: 5716468. DOI: 10.1016/j.jsbmb.2017.03.021. View

4.
Zhang F, Kong L, Zhao A, Ge W, Yan Z, Li L . Inflammatory cytokines as key players of apoptosis induced by environmental estrogens in the ovary. Environ Res. 2021; 198:111225. DOI: 10.1016/j.envres.2021.111225. View

5.
Li A, Zhuang T, Shi W, Liang Y, Liao C, Song M . Serum concentration of bisphenol analogues in pregnant women in China. Sci Total Environ. 2019; 707:136100. DOI: 10.1016/j.scitotenv.2019.136100. View