Cited by 1,492BRCA gene mutations in cancerCancer Cells and MetastasisBreast Cancer Treatment Studies

Aberrant luminal progenitors as the candidate target population for basal tumor development in BRCA1 mutation carriers

kConFab, Lim, Elgene, Vaillant, François, Wu, Di, Forrest, Natasha C, Pal, Bhupinder, Hart, Adam H, Asselin-Labat, Marie-Liesse +13 more·2009·Nature Medicine

Abstract

Basal-like breast cancers arising in women carrying mutations in the BRCA1 gene, encoding the tumor suppressor protein BRCA1, are thought to develop from the mammary stem cell. To explore early cellular changes that occur in BRCA1 mutation carriers, we have prospectively isolated distinct epithelial subpopulations from normal mammary tissue and preneoplastic specimens from individuals heterozygous for a BRCA1 mutation. We describe three epithelial subsets including basal stem/progenitor, luminal progenitor and mature luminal cells. Unexpectedly, we found that breast tissue from BRCA1 mutation carriers harbors an expanded luminal progenitor population that shows factor-independent growth in vitro. Moreover, gene expression profiling revealed that breast tissue heterozygous for a BRCA1 mutation and basal breast tumors were more similar to normal luminal progenitor cells than any other subset, including the stem cell-enriched population. The c-KIT tyrosine kinase receptor (encoded by KIT) emerged as a key marker of luminal progenitor cells and was more highly expressed in BRCA1-associated preneoplastic tissue and tumors. Our findings suggest that an aberrant luminal progenitor population is a target for transformation in BRCA1-associated basal tumors .

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Crossref · 10.1038/nm.2000

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Authors
kConFab, Lim, E., Vaillant, F., Wu, D., Forrest, N. C., Pal, B., Hart, A. H., Asselin-Labat, M.-L., Gyorki, D. E., Ward, T., Partanen, A., Feleppa, F., Huschtscha, L. I., Thorne, H. J., Fox, S. B., Yan, M., French, J. D., Brown, M. A., Smyth, G. K., Visvader, J. E., & Lindeman, G. J.
Affiliations
  • The University of Melbourne (AU)
  • Walter and Eliza Hall Institute of Medical Research (AU)
  • The Royal Melbourne Hospital (AU)
  • Children's Medical Research Institute (AU)
  • Peter MacCallum Cancer Centre (AU)
  • The University of Queensland (AU)
Corresponding author
  • Visvader, Jane E
  • Lindeman, Geoffrey J
Venue
Nature Medicine
Published
2009-08
Volume
15
Issue
8
Pages
907-913
ISSN
  • 1078-8956 (ISSN-L)
  • 1546-170X
OpenAlex
W2137162822
Cited by
1,492
References
44
Citations by year
2026: 29 · 2025: 62 · 2024: 80 · 2023: 94 · 2022: 72 · 2021: 86 · 2020: 71 · 2019: 61 · 2018: 64 · 2017: 81 · 2016: 84 · 2015: 98 · 2014: 117 · 2013: 112 · 2012: 133
FWCI
72.86
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Medicine (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › BRCA gene mutations in cancer
  • Health Sciences › Medicine › Oncology › Cancer Cells and Metastasis
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Breast Cancer Treatment Studies
Keywords
BRCA1 mutation carriers, basal-like breast cancer, luminal progenitor cells, mammary stem cells, KIT expression, tumor suppressor, gene expression profiling, breast cancer predisposition
MeSH terms
Breast Neoplasms, Cell Transformation, Neoplastic, Cells, Cultured, Female, Heterozygote, Humans, Models, Biological, Mutation, Precancerous Conditions, Receptors, Progesterone, Stem Cells, Neoplastic Stem Cells, Gene Expression Regulation, Neoplastic, Genes, BRCA1, Gene Expression Profiling, Mammary Glands, Human

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