Cited by 693Estrogen and related hormone effectsCancer Cells and MetastasisBreast Cancer Treatment Studies

Control of mammary stem cell function by steroid hormone signalling

Asselin-Labat, Marie-Liesse, Vaillant, François, Sheridan, Julie M., Pal, Bhupinder, Wu, Di, Simpson, Evan R., Yasuda, Hisataka, Smyth, Gordon K. +3 more·2010·Nature

Abstract

The ovarian hormones oestrogen and progesterone profoundly influence breast cancer risk, underpinning the benefit of endocrine therapies in the treatment of breast cancer. Modulation of their effects through ovarian ablation or chemoprevention strategies also significantly decreases breast cancer incidence. Conversely, there is an increased risk of breast cancer associated with pregnancy in the short term. The cellular mechanisms underlying these observations, however, are poorly defined. Here we demonstrate that mouse mammary stem cells (MaSCs) are highly responsive to steroid hormone signalling, despite lacking the oestrogen and progesterone receptors. Ovariectomy markedly diminished MaSC number and outgrowth potential in vivo, whereas MaSC activity increased in mice treated with oestrogen plus progesterone. Notably, even three weeks of treatment with the aromatase inhibitor letrozole was sufficient to reduce the MaSC pool. In contrast, pregnancy led to a transient 11-fold increase in MaSC numbers, probably mediated through paracrine signalling from RANK ligand. The augmented MaSC pool indicates a cellular basis for the short-term increase in breast cancer incidence that accompanies pregnancy. These findings further indicate that breast cancer chemoprevention may be achieved, in part, through suppression of MaSC function.

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Crossref · 10.1038/nature09027

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Authors
Asselin-Labat, M.-L., Vaillant, F., Sheridan, J. M., Pal, B., Wu, D., Simpson, E. R., Yasuda, H., Smyth, G. K., Martin, T. J., Lindeman, G. J., & Visvader, J. E.
Affiliations
  • Walter and Eliza Hall Institute of Medical Research (AU)
  • The University of Melbourne (AU)
  • Monash Medical Centre (AU)
  • Oriental Yeast Co., Ltd. (Japan) (JP)
  • St Vincents Institute of Medical Research (AU)
  • The Royal Melbourne Hospital (AU)
Corresponding author
  • Lindeman, Geoffrey J.
  • Visvader, Jane E.
Venue
Nature
Published
2010-04-11
Volume
465
Issue
7299
Pages
798-802
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2117963341
Cited by
693
References
38
Citations by year
2026: 8 · 2025: 16 · 2024: 29 · 2023: 22 · 2022: 29 · 2021: 30 · 2020: 30 · 2019: 32 · 2018: 40 · 2017: 44 · 2016: 45 · 2015: 63 · 2014: 53 · 2013: 64 · 2012: 76
FWCI
45.37
Type
journal article
Language
en
Open access
closed
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Estrogen and related hormone effects
  • Health Sciences › Medicine › Oncology › Cancer Cells and Metastasis
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Breast Cancer Treatment Studies
Keywords
mammary stem cells, steroid hormone signaling, estrogen, progesterone, RANKL, breast cancer risk, pregnancy, ovariectomy, letrozole, aromatase inhibition, chemoprevention, paracrine signaling, mammary gland development
MeSH terms
Letrozole, Animals, Aromatase, Cell Count, Estrogens, Female, Humans, Mammary Glands, Animal, Nitriles, Ovariectomy, Pregnancy, Pregnancy, Animal, Progesterone, Receptors, Estrogen, Receptors, Progesterone, Stem Cells, Triazoles, Signal Transduction, Integrin beta1, Paracrine Communication, Integrin beta3, Aromatase Inhibitors, Mice, CD24 Antigen, RANK Ligand, ErbB Receptors

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