Cited by 147HER2/EGFR in Cancer ResearchEstrogen and related hormone effectsTGF-β signaling in diseases

Synergistic Interaction of the Neu Proto-Oncogene Product and Transforming Growth Factor α in the Mammary Epithelium of Transgenic Mice

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Muller, William J., Arteaga, Carlos L., Muthuswamy, Senthil K., Siegel, Peter M., Webster, Marc A., Cardiff, Robert D., Meise, Katherine S., Li, Feng +2 more·1996·Molecular and Cellular Biology

Abstract

Transgenic mice expressing either the neu proto-oncogene or transforming growth factor (TGF-alpha) in the mammary epithelium develop spontaneous focal mammary tumors that occur after a long latency. Since the epidermal growth factor receptor (EGFR) and Neu are capable of forming heterodimers that are responsive to EGFR ligands such as TGF-alpha, we examined whether coexpression of TGF-alpha and Neu in mammary epithelium could cooperate to accelerate the onset of mammary tumors. To test this hypothesis, we interbred separate transgenic strains harboring either a mouse mammary tumor virus/TGF-alpha or a mouse mammary tumor virus/neu transgene to generate bitransgenic mice that coexpress TGF-alpha and neu in the mammary epithelium. Female mice coexpressing TGF-alpha and neu developed multifocal mammary tumors which arose after a significantly shorter latency period than either parental strain alone. The development of these mammary tumors was correlated with the tyrosine phosphorylation of Neu and the recruitment of c-Src to the Neu complex. Immunoprecipitation and immunoblot analyses with EGFR- and Neu-specific antisera, however, failed to detect physical complexes of these two receptors. Taken together, these observations suggest that Neu and TGF-alpha cooperate in mammary tumorigenesis through a mechanism involving Neu and EGFR transactivation.

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Crossref · 10.1128/mcb.16.10.5726

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  • Mice co-expressing TGFα and Neu in mammary epithelium developed multifocal mammary cancers with significantly shorter latency than those expressing either gene alone.

    “In transgenic mouse studies, mice that co-express TGFα and Neu in mammary epithelium developed multifocal mammary cancers that arose after a significantly shorter latency than those expressing either gene alone (Muller et al., 1996).”

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Authors
Muller, W. J., Arteaga, C. L., Muthuswamy, S. K., Siegel, P. M., Webster, M. A., Cardiff, R. D., Meise, K. S., Li, F., Halter, S. A., & Coffey, R. J.
Affiliations
  • McMaster University (CA)
  • Vanderbilt University (US)
  • University of California, Davis (US)
Venue
Molecular and Cellular Biology
Published
1996-10
Volume
16
Issue
10
Pages
5726-5736
ISSN
  • 0270-7306 (ISSN-L)
  • 1098-5549
OpenAlex
W2107921263
Cited by
147
References
38
Citations by year
2026: 2 · 2024: 1 · 2023: 5 · 2022: 1 · 2021: 2 · 2020: 2 · 2019: 2 · 2018: 1 · 2017: 2 · 2016: 2 · 2015: 3 · 2014: 7 · 2013: 6 · 2012: 3
FWCI
3.59
Type
journal article
Language
en
Open access
Locations
  • Molecular and Cellular Biology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • TSpace (University of Toronto) (submittedVersion)
Funders
  • U.S. Department of Veterans Affairs
  • Cancer Research Society
  • Medical Research Council Canada
  • Medical Research Council
  • National Cancer Institute (R01 CAS4285, CA46413, R01CA046413)
Topics
  • Health Sciences › Medicine › Oncology › HER2/EGFR in Cancer Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Estrogen and related hormone effects
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › TGF-β signaling in diseases
Keywords
transforming growth factor-alpha, epidermal growth factor receptor, mammary tumors, mammary epithelium, tumor latency, receptor tyrosine phosphorylation, Src kinase, receptor transactivation, heterodimerization, bitransgenic mice, oncogene cooperation
MeSH terms
Aging, Animals, Cell Transformation, Neoplastic, Epithelium, Female, Mammary Glands, Animal, Mammary Tumor Virus, Mouse, Mammary Neoplasms, Experimental, Mice, Transgenic, Phosphorylation, Transcription, Genetic, Transforming Growth Factor alpha, Erb-b2 Receptor Tyrosine Kinases, Genes, erbB-2, Dimerization, Mice

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