Modeling K-Ras-driven lung adenocarcinoma in mice: preclinical validation of therapeutic targets

J Mol Med (Berl). 2016 Feb;94(2):121-35. doi: 10.1007/s00109-015-1360-5. Epub 2015 Nov 3.

Abstract

Lung cancer is the leading cause of cancer-related deaths worldwide, and even today, the 5-year survival rate is still below 15%. Lung adenocarcinoma is the most frequent subtype, and approximately 25% of the cases harbor activating mutations in the KRAS gene. To date, there is no effective treatment for patients carrying KRAS mutations due, at least in part, to the challenge posed by direct targeting of the KRAS oncoprotein. During the last decade, scientists have developed genetically engineered mouse models that faithfully recapitulate the natural history of the human tumors. These models have been used as a preclinical platform to validate a number of relevant downstream effectors of KRAS signaling. Targets displaying synthetic lethality with the KRAS oncoprotein have also been validated in these models. Here, we review these studies and discuss their potential value in the clinical setting. We also provide an outlook as of how to improve the significance of target validation studies in preclinical platforms.

Keywords: GEMMs; Mouse models; Target validation; Therapeutic strategies.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Adenocarcinoma / drug therapy
  • Adenocarcinoma / genetics*
  • Adenocarcinoma / metabolism*
  • Adenocarcinoma / pathology
  • Adenocarcinoma of Lung
  • Animals
  • Antineoplastic Agents / pharmacology
  • Antineoplastic Agents / therapeutic use
  • Biomarkers, Tumor / genetics
  • Biomarkers, Tumor / metabolism
  • Cell Cycle / drug effects
  • Cell Transformation, Neoplastic / genetics
  • Cell Transformation, Neoplastic / metabolism
  • Disease Models, Animal
  • Drug Evaluation, Preclinical
  • Drug Resistance, Neoplasm
  • Humans
  • Lung Neoplasms / drug therapy
  • Lung Neoplasms / genetics*
  • Lung Neoplasms / metabolism*
  • Lung Neoplasms / pathology
  • MAP Kinase Signaling System
  • Mice
  • Molecular Targeted Therapy
  • Mutation
  • Neoplasm Metastasis
  • Oncogenes
  • Phosphatidylinositol 3-Kinases / metabolism
  • Proto-Oncogene Proteins p21(ras) / antagonists & inhibitors
  • Proto-Oncogene Proteins p21(ras) / genetics*
  • Proto-Oncogene Proteins p21(ras) / metabolism*
  • Signal Transduction / drug effects

Substances

  • Antineoplastic Agents
  • Biomarkers, Tumor
  • Phosphatidylinositol 3-Kinases
  • Proto-Oncogene Proteins p21(ras)