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Grant Details

Grant Number: 5U01ES026137-05 Interpret this number
Primary Investigator: Chen, Shiuan
Organization: Beckman Research Institute/City Of Hope
Project Title: Menopausal Transition - a Window of Susceptibility for the Promotion of Breast Cancer By Environmental Exposures
Fiscal Year: 2019


Abstract

 DESCRIPTION (provided by applicant):There is substantial evidence suggesting that environmental disrupting chemicals (EDCs) initiate and promote the development of breast cancer. In this U01 application, we will study an under-investigated window of susceptibility for exposure: the menopausal transition. This transition begins when ovarian function begins to decline and ends at menopause when there is a cessation of ovarian function resulting in low levels of estrogens. During this important window of susceptibility, the Women's' Health Initiative (WHI) reported that hormone therapy increased both the incidence of and mortality from breast cancer. The WHI results are explained by a biologically-based breast tumor model; it suggests that hormone therapy in the menopausal transition promotes the growth of pre-existing occult lesions and minimally initiated de novo tumors. We hypothesize that EDCs mimic hormone therapy and promote the development of breast cancer during the menopausal transition. We will focus on polybrominated diphenyl ethers (PBDEs) because of their persistence in the environment and human tissue and on bisphenol A (BPA) because of its widespread use in food-grade plastics and thermal paper. Both EDCs are recognized as major health concerns. Our proposed research will allow us to evaluate the role of these EDCs, individually and combined, on the development of breast cancer during the menopausal transition. To determine the mechanisms, we will apply a transdisciplinary approach using cell culture, samples collected from women during the menopausal transition, and mouse models. In Specific Aim 1, we will determine the biologic actions and mechanisms of EDCs, singly and in combination, using the AroER-Tri screen cell culture system developed by the joint-Principal Investigator, Dr. Chen. In Specific Aim 2, we will assess the effects of EDCs in women during the menopausal transition on estrogenic activity and the epigenome, as well as the association of the EDCs and breast cancer. In Specific Aim 3, we will test the effects of these EDCs on the development of mammary lesions in a mouse model of menopause, and compare to the effects in an ovarectomized mouse model. Our transdisciplinary approach will capitalize on the strengths of each study type and allow us to conduct a more comprehensive assessment than any single approach. This is possible because of our experienced, multidisciplinary team. In Specific Aim 4, with our community partners, we will provide a one-stop web-based resource for evidence-based materials on the role of environmental exposures and development of breast cancer, particularly during the menopausal transition. Furthermore, we will develop, test, and disseminate educational materials to multi-culturally diverse communities. We will share our expertise/work with other multi-disciplinary teams in the BCERP to produce valuable results and increase the amount of relevant scientific knowledge on the mechanisms and effects of EDC exposure. We expect this work to result in future prevention strategies to reduce or mitigate exposures and promote effective communication of scientifically sound findings to the general public and policy makers.



Publications

Molecular features of luminal breast cancer defined through spatial and single-cell transcriptomics.
Authors: Yoshitake R. , Mori H. , Ha D. , Wu X. , Wang J. , Wang X. , Saeki K. , Chang G. , Shim H.J. , Chan Y. , et al. .
Source: Clinical and translational medicine, 2024 Jan; 14(1), p. e1548.
PMID: 38282415
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Benzophenone-3 exposure alters composition of tumor infiltrating immune cells and increases lung seeding of 4T1 breast cancer cells.
Authors: Morin S.M. , Gregory K.J. , Medeiros B. , Terefe T. , Hoshyar R. , Alhusseiny A. , Chen S. , Schwartz R.C. , Jerry D.J. , Vandenberg L.N. , et al. .
Source: Advances in cancer biology - metastasis, 2023 Jul; 7, .
EPub date: 2022-12-07.
PMID: 37593105
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TXNIP Links Anticipatory Unfolded Protein Response to Estrogen Reprogramming Glucose Metabolism in Breast Cancer Cells.
Authors: Wang Y. , Chen S. .
Source: Endocrinology, 2022-01-01; 163(1), .
PMID: 34614512
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Influence of Estrogen Treatment on ESR1+ and ESR1- Cells in ER+ Breast Cancer: Insights from Single-Cell Analysis of Patient-Derived Xenograft Models.
Authors: Mori H. , Saeki K. , Chang G. , Wang J. , Wu X. , Hsu P.Y. , Kanaya N. , Wang X. , Somlo G. , Nakamura M. , et al. .
Source: Cancers, 2021-12-19; 13(24), .
EPub date: 2021-12-19.
PMID: 34944995
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Methylation biomarkers of polybrominated diphenyl ethers (PBDEs) and association with breast cancer risk at the time of menopause.
Authors: Ding Y.C. , Hurley S. , Park J.S. , Steele L. , Rakoff M. , Zhu Y. , Zhao J. , LaBarge M. , Bernstein L. , Chen S. , et al. .
Source: Environment international, 2021 Nov; 156, p. 106772.
EPub date: 2021-07-19.
PMID: 34425644
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Exploring the Biological Activity and Mechanism of Xenoestrogens and Phytoestrogens in Cancers: Emerging Methods and Concepts.
Authors: Wang X. , Ha D. , Yoshitake R. , Chan Y.S. , Sadava D. , Chen S. .
Source: International journal of molecular sciences, 2021-08-16; 22(16), .
EPub date: 2021-08-16.
PMID: 34445499
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Mammary cell gene expression atlas links epithelial cell remodeling events to breast carcinogenesis.
Authors: Saeki K. , Chang G. , Kanaya N. , Wu X. , Wang J. , Bernal L. , Ha D. , Neuhausen S.L. , Chen S. .
Source: Communications biology, 2021-06-02; 4(1), p. 660.
EPub date: 2021-06-02.
PMID: 34079055
Related Citations

11-Oxygenated Estrogens Are a Novel Class of Human Estrogens but Do not Contribute to the Circulating Estrogen Pool.
Authors: Barnard L. , Schiffer L. , Louw du-Toit R. , Tamblyn J.A. , Chen S. , Africander D. , Arlt W. , Foster P.A. , Storbeck K.H. .
Source: Endocrinology, 2021-03-01; 162(3), .
PMID: 33340399
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Environmental Carcinogenesis at the Single-Cell Level.
Authors: Chang G. , Saeki K. , Mori H. , Chen S. .
Source: Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology, 2020 Oct; 29(10), p. 1880-1886.
EPub date: 2020-03-04.
PMID: 32132147
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Environmental exposures during windows of susceptibility for breast cancer: a framework for prevention research.
Authors: Terry M.B. , Michels K.B. , Brody J.G. , Byrne C. , Chen S. , Jerry D.J. , Malecki K.M.C. , Martin M.B. , Miller R.L. , Neuhausen S.L. , et al. .
Source: Breast cancer research : BCR, 2019-08-20; 21(1), p. 96.
EPub date: 2019-08-20.
PMID: 31429809
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Molecular Mechanisms of Polybrominated Diphenyl Ethers (BDE-47, BDE-100, and BDE-153) in Human Breast Cancer Cells and Patient-Derived Xenografts.
Authors: Kanaya N. , Bernal L. , Chang G. , Yamamoto T. , Nguyen D. , Wang Y.Z. , Park J.S. , Warden C. , Wang J. , Wu X. , et al. .
Source: Toxicological sciences : an official journal of the Society of Toxicology, 2019-06-01; 169(2), p. 380-398.
PMID: 30796839
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Single-cell RNA-sequencing analysis of estrogen- and endocrine-disrupting chemical-induced reorganization of mouse mammary gland.
Authors: Kanaya N. , Chang G. , Wu X. , Saeki K. , Bernal L. , Shim H.J. , Wang J. , Warden C. , Yamamoto T. , Li J. , et al. .
Source: Communications biology, 2019; 2, p. 406.
EPub date: 2019-11-05.
PMID: 31701034
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Identification of Estrogen-Related Receptor α Agonists in the Tox21 Compound Library.
Authors: Lynch C. , Zhao J. , Huang R. , Kanaya N. , Bernal L. , Hsieh J.H. , Auerbach S.S. , Witt K.L. , Merrick B.A. , Chen S. , et al. .
Source: Endocrinology, 2018-02-01; 159(2), p. 744-753.
PMID: 29216352
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