A common MET polymorphism harnesses HER2 signaling to drive aggressive squamous cell carcinoma

Nat Commun. 2020 Mar 25;11(1):1556. doi: 10.1038/s41467-020-15318-5.

Abstract

c-MET receptors are activated in cancers through genomic events like tyrosine kinase domain mutations, juxtamembrane splicing mutation and amplified copy numbers, which can be inhibited by c-MET small molecule inhibitors. Here, we discover that the most common polymorphism known to affect MET gene (N375S), involving the semaphorin domain, confers exquisite binding affinity for HER2 and enables METN375S to interact with HER2 in a ligand-independent fashion. The resultant METN375S/HER2 dimer transduces potent proliferative, pro-invasive and pro-metastatic cues through the HER2 signaling axis to drive aggressive squamous cell carcinomas of the head and neck (HNSCC) and lung (LUSC), and is associated with poor prognosis. Accordingly, HER2 blockers, but not c-MET inhibitors, are paradoxically effective at restraining in vivo and in vitro models expressing METN375S. These results establish METN375S as a biologically distinct and clinically actionable molecular subset of SCCs that are uniquely amenable to HER2 blocking therapies.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Antineoplastic Agents / pharmacology
  • Antineoplastic Agents / therapeutic use
  • Carcinoma, Squamous Cell / drug therapy
  • Carcinoma, Squamous Cell / genetics*
  • Carcinoma, Squamous Cell / mortality
  • Carcinoma, Squamous Cell / pathology*
  • Cell Line, Tumor
  • Head and Neck Neoplasms / drug therapy
  • Head and Neck Neoplasms / genetics
  • Head and Neck Neoplasms / mortality
  • Head and Neck Neoplasms / pathology
  • Humans
  • Lung Neoplasms / drug therapy
  • Lung Neoplasms / genetics
  • Lung Neoplasms / mortality
  • Lung Neoplasms / pathology
  • Mice
  • Mutation
  • Phenotype
  • Phosphorylation / drug effects
  • Polymorphism, Genetic
  • Prognosis
  • Protein Binding
  • Protein Interaction Domains and Motifs
  • Protein Kinase Inhibitors / pharmacology
  • Protein Kinase Inhibitors / therapeutic use
  • Proto-Oncogene Proteins c-met / chemistry
  • Proto-Oncogene Proteins c-met / genetics*
  • Proto-Oncogene Proteins c-met / metabolism*
  • Receptor, ErbB-2 / antagonists & inhibitors
  • Receptor, ErbB-2 / metabolism*
  • Signal Transduction / drug effects
  • Xenograft Model Antitumor Assays

Substances

  • Antineoplastic Agents
  • Protein Kinase Inhibitors
  • ERBB2 protein, human
  • MET protein, human
  • Proto-Oncogene Proteins c-met
  • Receptor, ErbB-2