Cited by 273PI3K/AKT/mTOR signaling in cancerDevelopmental Biology and Gene RegulationBreast Lesions and Carcinomas

Conditional loss of PTEN leads to precocious development and neoplasia in the mammary gland

Li, Gang, Robinson, Gertraud W., Lesche, Ralf, Martinez-Diaz, Hilda, Jiang, Zhaorong, Rozengurt, Nora, Wagner, Kay-Uwe, Wu, De-Chang +4 more·2002·Development

Abstract

PTEN tumor suppressor is frequently mutated in human cancers, including breast cancers. Female patients with inherited PTEN mutations suffer from virginal hypertrophy of the breast with high risk of malignant transformation. However, the exact mechanisms of PTEN in controlling mammary gland development and tumorigenesis are unclear. In this study, we generated mice with a mammary-specific deletion of the Pten gene. Mutant mammary tissue displayed precocious lobulo-alveolar development, excessive ductal branching, delayed involution and severely reduced apoptosis. Pten null mammary epithelial cells were disregulated and hyperproliferative. Mutant females developed mammary tumors early in life. Similar phenotypes were observed in Pten-null mammary epithelia that had been transplanted into wild-type stroma, suggesting that PTEN plays an essential and cell-autonomous role in controlling the proliferation, differentiation and apoptosis of mammary epithelial cells.

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Crossref · 10.1242/dev.129.17.4159

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Authors
Li, G., Robinson, G. W., Lesche, R., Martinez-Diaz, H., Jiang, Z., Rozengurt, N., Wagner, K.-U., Wu, D.-C., Lane, T. F., Liu, X., Hennighausen, L., & Wu, H.
Affiliations
  • Howard Hughes Medical Institute (US)
  • National Institutes of Health (US)
  • Epigenomics (Germany) (DE)
  • Beijing Radiation Center (CN)
  • University of California, Los Angeles (US)
Corresponding author
Wu, Hong
Venue
Development
Published
2002-09-01
Volume
129
Issue
17
Pages
4159-4170
ISSN
  • 0950-1991 (ISSN-L)
  • 1477-9129
OpenAlex
W2143927620
Cited by
272
References
51
Citations by year
2026: 2 · 2025: 6 · 2024: 6 · 2023: 13 · 2022: 4 · 2021: 6 · 2020: 10 · 2019: 5 · 2018: 4 · 2017: 8 · 2016: 4 · 2015: 17 · 2014: 8 · 2013: 22 · 2012: 15
FWCI
4.53
Type
journal article
Language
en
Open access
closed
Locations
  • Development (publishedVersion)
  • PubMed (publishedVersion)
  • HighWire Press Open Archive (submittedVersion)
Funders
  • National Cancer Institute (U01CA084128, P50 CA86306, P50CA086306, U01CA84128-03)
  • National Institute of Neurological Disorders and Stroke (R01NS038489, NS38489)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › PI3K/AKT/mTOR signaling in cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Breast Lesions and Carcinomas
Keywords
PTEN, mammary gland development, mammary tumors, tumor suppressor, conditional gene deletion, ductal branching, mammary gland involution, apoptosis, mammary epithelial cell proliferation, mammary epithelial differentiation, breast cancer
MeSH terms
Animals, Base Sequence, Cell Transformation, Neoplastic, Mammary Neoplasms, Experimental, Phosphoric Monoester Hydrolases, Gene Deletion, Mice, Knockout, Tumor Suppressor Proteins, PTEN Phosphohydrolase, Mice

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