Synergistic Interaction of the Neu Proto-Oncogene Product and Transforming Growth Factor α in the Mammary Epithelium of Transgenic Mice
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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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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).”
From ERBB Receptors: From Oncogene Discovery to Basic Science to Mechanism-Based Cancer Therapeutics (2014) · cites this paper as Muller et al., 1996
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ERBB Receptors: From Oncogene Discovery to Basic Science to Mechanism-Based Cancer Therapeutics
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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)
- ORCID
- Venue
- Molecular and Cellular Biology
- Publisher
- Informa UK Limited
- Published
- 1996-10
- Volume
- 16
- Issue
- 10
- Pages
- 5726-5736
- ISSN
- 0270-7306 (ISSN-L)
- 1098-5549
- PMC
- PMC231573
- 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
- green
- www.ncbi.nlm.nih.gov
- 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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