Cited by 477HER2/EGFR in Cancer ResearchLung Cancer Treatments and MutationsGastric Cancer Management and Outcomes

Met receptor contributes to trastuzumab resistance of Her2-overexpressing breast cancer cells

Shattuck, David L., Miller, Jamie K., Carraway, Kermit L., Sweeney, Colleen·2008·Cancer Research

Abstract

Her2 is overexpressed in 20% to 30% of breast tumors and correlates with reduced disease-free and overall patient survival. Trastuzumab, a humanized monoclonal antibody directed against Her2, represents the first Her2-targeted therapy, which decreases the risk of relapse and prolongs patient survival. Resistance to trastuzumab, both inherent and treatment-acquired, represents a significant barrier to the effective treatment of Her2 (+) breast cancer. The Met receptor tyrosine kinase is aberrantly expressed in breast cancer and predicts poor patient prognosis. In this study, we find that Met is frequently expressed in Her2-overexpressing breast cancer cells, as well as Her2 (+) breast cancer. Importantly, Met contributes to trastuzumab resistance, as inhibition of Met sensitizes cells to trastuzumab-mediated growth inhibition, whereas Met activation protects cells against trastuzumab by abrogating p27 induction. Remarkably, Her2-overexpressing breast cancer cells rapidly up-regulate Met expression after trastuzumab treatment, promoting their own resistance. Our study suggests that a subset of Her2 (+) patients may benefit from combined inhibition of Her2 and Met.

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Crossref · 10.1158/0008-5472.can-07-5962

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Authors
Shattuck, D. L., Miller, J. K., Carraway, K. L., & Sweeney, C.
Affiliations
UC Davis Comprehensive Cancer Center (US)
Venue
Cancer Research
Published
2008-03-01
Volume
68
Issue
5
Pages
1471-1477
ISSN
  • 0008-5472 (ISSN-L)
  • 1538-7445
OpenAlex
W2027684043
Cited by
473
References
43
Citations by year
2026: 6 · 2025: 18 · 2024: 12 · 2023: 30 · 2022: 18 · 2021: 22 · 2020: 34 · 2019: 24 · 2018: 22 · 2017: 24 · 2016: 26 · 2015: 33 · 2014: 37 · 2013: 41 · 2012: 42
FWCI
14.78
Type
journal article
Language
en
Open access
closed
Locations
  • Cancer Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Cancer Institute (CA123541, R01CA118384, R01CA123541, CA118384)
Topics
  • Health Sciences › Medicine › Oncology › HER2/EGFR in Cancer Research
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Lung Cancer Treatments and Mutations
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Gastric Cancer Management and Outcomes
Keywords
MET receptor tyrosine kinase, trastuzumab resistance, HER2-positive breast cancer, combination therapy, MET inhibition, HER2-targeted therapy, drug resistance
MeSH terms
Trastuzumab, Antibodies, Monoclonal, Antineoplastic Agents, Breast, Breast Neoplasms, Humans, Models, Biological, Phosphorylation, Gene Expression Regulation, Neoplastic, Erb-b2 Receptor Tyrosine Kinases, Genes, erbB-2, Drug Resistance, Neoplasm, Proto-Oncogene Proteins c-met, Cell Line, Tumor, Extracellular Signal-Regulated MAP Kinases, Cell Proliferation, Antibodies, Monoclonal, Humanized

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