Cited by 406HER2/EGFR in Cancer ResearchPI3K/AKT/mTOR signaling in cancerCancer Mechanisms and Therapy

Heregulin‐dependent regulation of HER2/neu oncogenic signaling by heterodimerization with HER3.

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Wallasch, C., Weiss, F. U., Niederfellner, G., Jallal, B., Issing, W., Ullrich, A.·1995·The EMBO Journal

Abstract

Amplification and/or overexpression of HER2/neu and HER3 genes have been implicated in the development of cancer in humans. The fact that these receptor tyrosine kinases (RTKs) are frequently coexpressed in tumor-derived cell lines and that heterodimers form high affinity binding sites for heregulin (HRG) suggests a novel mechanism for signal definition, diversification or amplification. In cells expressing HER2 and HER3, tyrosine phosphorylation of HER3 is markedly increased upon exposure to recombinant HRG. ATP binding site mutants of HER2 and HER3 demonstrate transphosphorylation of HER3 by HER2, but not vice versa. HRG-induced transphosphorylation of HER3 results in a substrate phosphorylation pattern distinct from HER2 cells and enhances association of the receptor with SHC and phosphoinositol 3-kinase in transfected 293 and mammary carcinoma-derived MCF-7 cells. The physiological relevance of HER2/HER3 heterodimerization is demonstrated by HRG-dependent transformation of NIH 3T3 cells coexpressing the two receptors. These findings demonstrate the acquisition of expanded signaling capacities for HER2 by HRG-induced heterodimerization with HER3 and provide a molecular basis for the involvement of receptor heteroactivation in the development of human malignancies.

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Crossref · 10.1002/j.1460-2075.1995.tb00101.x

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Authors
Wallasch, C., Weiss, F. U., Niederfellner, G., Jallal, B., Issing, W., & Ullrich, A.
Affiliations
Max Planck Institute of Biochemistry (DE)
Venue
The EMBO Journal
Published
1995-09-01
Volume
14
Issue
17
Pages
4267-4275
ISSN
  • 0261-4189 (ISSN-L)
  • 1460-2075
OpenAlex
W1514463309
Cited by
406
References
58
Citations by year
2026: 3 · 2025: 2 · 2024: 6 · 2023: 19 · 2022: 9 · 2021: 10 · 2020: 6 · 2019: 8 · 2018: 10 · 2017: 10 · 2016: 7 · 2015: 20 · 2014: 14 · 2013: 12 · 2012: 17
FWCI
8.40
Type
journal article
Language
en
Open access
Locations
  • The EMBO Journal (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
Deutsche Forschungsgemeinschaft
Topics
  • Health Sciences › Medicine › Oncology › HER2/EGFR in Cancer Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › PI3K/AKT/mTOR signaling in cancer
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Cancer Mechanisms and Therapy
Keywords
HER2/neu, HER3, neuregulin-1, transphosphorylation, oncogenic signaling, Shc, phosphatidylinositol 3-kinase, cell transformation, receptor coactivation, breast cancer, MCF-7 cells
MeSH terms
Animals, Base Sequence, Cell Line, Glycoproteins, Humans, Melanoma, Molecular Sequence Data, Phosphorylation, Proto-Oncogene Proteins, Tumor Cells, Cultured, Restriction Mapping, Signal Transduction, Gene Expression, Polymerase Chain Reaction, Oligonucleotides, Antisense, 3T3 Cells, Phosphotransferases (Alcohol Group Acceptor), DNA Primers, Erb-b2 Receptor Tyrosine Kinases, Phosphatidylinositol 3-Kinases, Receptor Protein-Tyrosine Kinases, Neuregulins, Receptor, ErbB-3, Macromolecular Substances, Mice, ErbB Receptors

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