MET-mediated resistance to EGFR inhibitors: an old liaison rooted in colorectal cancer stem cells.

Carla Boccaccio, Paolo Luraghi, Paolo M. Comoglio

Research output: Contribution to journalArticlepeer-review

Abstract

Inhibitors of EGFR are currently approved for the therapy of metastatic colorectal cancer (as well as other tumors), but their benefits are limited by inherent and acquired resistance, whose mechanisms are the subject of intense investigation. It is known that such resistance relies on a handful of genetic lesions and/or extracellular signals bypassing the requirement of EGF for cell proliferation and survival. As recently shown, these mechanisms may imply oncogenic activation of MET or its stimulation by the ligand hepatocyte growth factor. However, it is still largely obscure if sensitivity or resistance to EGFR inhibitors operates in cancer stem cells. Convincing evidence indicates that this elusive cell subpopulation is present at the roots of colorectal cancer. Conceivably, cancer stem cells accumulate the genetic lesions driving tumor onset and progression, as well as the genetic determinants of sensitivity or resistance to conventional and targeted therapies. Recent studies enlighten the expression of functional EGFR and MET in colorectal cancer stem cells and the outcome of their inhibition. Evidence is provided that, in patients sensitive to EGFR therapy, association of MET inhibitors fosters cancer stem cell eradication and durable tumor regression.

Original languageEnglish
Pages (from-to)3647-3651
Number of pages5
JournalCancer Research
Volume74
Issue number14
DOIs
Publication statusPublished - 2014

ASJC Scopus subject areas

  • Cancer Research
  • Oncology

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