Cited by 176Colorectal Cancer Treatments and StudiesHER2/EGFR in Cancer ResearchLung Cancer Treatments and Mutations

HGF Rescues Colorectal Cancer Cells from EGFR Inhibition via MET Activation

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Liska, David, Chen, Chin-Tung, Bachleitner-Hofmann, Thomas, Christensen, James G., Weiser, Martin R.·2011·Clinical Cancer Research

Abstract

Purpose: Cetuximab, an antibody targeting the epidermal growth factor receptor (EGFR), is active in colorectal cancer (CRC). However, response rates range from only 10% to 20%. Here, we investigate hepatocyte growth factor (HGF)-dependent mesenchymal-epithelial transition factor (MET) activation as a mediator of cetuximab resistance through signal diversification in CRC cell lines. Experimental Design: DiFi, GEO, and LIM1215 cells were treated with varying concentrations and combinations of EGF, HGF, cetuximab, and PHA-665752 (a highly specific MET kinase inhibitor). Biological end points included proliferation, cell cycle arrest, and apoptosis. Proliferation was measured using WST-1 assays and synergy investigated via isobolograms. Expression and signaling were examined using immunoblotting. Results: EGFR and MET are coexpressed in these CRC cell lines, and dual receptor activation synergistically increased proliferation. Cetuximab inhibited cell growth by 60%–80% with an associated dephosphorylation of EGFR, MAPK, and/or AKT. Addition of HGF to cetuximab-treated cells phosphorylated MET, but not EGFR or ErbB3, restimulated the MAPK and AKT pathways, restored cell proliferation, and rescued cells from G1 arrest and apoptosis. Importantly, this effect could be abrogated by inhibiting MET activation with PHA-665752 or by downregulating MET expression with RNAi. Conclusions: HGF-induced MET activation is a novel mechanism of cetuximab resistance in CRC. Inhibition of the HGF-MET pathway may improve response to EGFR inhibitors in CRC, and combination therapy should be further investigated. Clin Cancer Res; 17(3); 472–82. ©2010 AACR.

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Authors
Liska, D., Chen, C.-T., Bachleitner-Hofmann, T., Christensen, J. G., & Weiser, M. R.
Affiliations
  • Memorial Sloan Kettering Cancer Center (US)
  • Authors' Affiliations: 1Departments of Surgery, Memorial Sloan-Kettering Cancer Center, New York; 2Department of Cancer Research, Pfizer Global Research and Development, La Jolla Laboratories, La Jolla, California
Corresponding author
Weiser, Martin R.
Venue
Clinical Cancer Research
Published
2011-02-01
Volume
17
Issue
3
Pages
472-482
ISSN
  • 1078-0432 (ISSN-L)
  • 1557-3265
OpenAlex
W2133129337
Cited by
176
References
54
Citations by year
2026: 7 · 2025: 4 · 2024: 5 · 2023: 4 · 2022: 6 · 2021: 9 · 2020: 9 · 2019: 7 · 2018: 6 · 2017: 23 · 2016: 17 · 2015: 22 · 2014: 23 · 2013: 18 · 2012: 11
FWCI
5.37
Type
journal article
Language
en
Open access
Locations
  • Clinical Cancer Research (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Cancer Institute (T32CA009501)
Topics
  • Health Sciences › Medicine › Oncology › Colorectal Cancer Treatments and Studies
  • Health Sciences › Medicine › Oncology › HER2/EGFR in Cancer Research
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Lung Cancer Treatments and Mutations
Keywords
hepatocyte growth factor, MET activation, cetuximab resistance, EGFR inhibition, colorectal cancer, mesenchymal-epithelial transition, PHA-665752, MAPK signaling, Akt signaling, cell proliferation, apoptosis, G1 cell cycle arrest, combination therapy
MeSH terms
Cetuximab, Antibodies, Monoclonal, Antineoplastic Agents, Humans, Colorectal Neoplasms, Signal Transduction, Transcriptional Activation, Hepatocyte Growth Factor, Drug Resistance, Neoplasm, Proto-Oncogene Proteins c-met, Cell Line, Tumor, Cell Proliferation, Antibodies, Monoclonal, Humanized, ErbB Receptors

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