PreprintCited by 478Lung Cancer Treatments and MutationsHER2/EGFR in Cancer ResearchLung Cancer Research Studies

Lung adenocarcinomas induced in mice by mutant EGF receptors foundin human lung cancers respondto a tyrosine kinase inhibitor orto down-regulation of the receptors

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Politi, Katerina, Zakowski, Maureen F., Fan, Pang-Dian, Schonfeld, Emily A., Pao, William, Varmus, Harold E.·2006·Genes & Development

Abstract

Somatic mutations in exons encoding the tyrosine kinase domain of the epidermal growth factor receptor ( EGFR ) gene are found in human lung adenocarcinomas and are associated with sensitivity to the tyrosine kinase inhibitors gefitinib and erlotinib. Nearly 90% of the EGFR mutations are either short, in-frame deletions in exon 19 or point mutations that result in substitution of arginine for leucine at amino acid 858 (L858R). To study further the role of these mutations in the initiation and maintenance of lung cancer, we have developed transgenic mice that express an exon 19 deletion mutant ( EGFR Δ L747–S752 ) or the L858R mutant ( EGFR L858R ) in type II pneumocytes under the control of doxycycline. Expression of either EGFR mutant leads to the development of lung adenocarcinomas. Two weeks after induction with doxycycline, mice that express the EGFR L858R allele show diffuse lung cancer highly reminiscent of human bronchioloalveolar carcinoma and later develop interspersed multifocal adenocarcinomas. In contrast, mice expressing EGFR Δ L747–S752 develop multifocal tumors embedded in normal lung parenchyma with a longer latency. With mice carrying either EGFR allele, withdrawal of doxycycline (to reduce expression of the transgene) or treatment with erlotinib (to inhibit kinase activity) causes rapid tumor regression, as assessed by magnetic resonance imaging and histopathology, demonstrating that mutant EGFR is required for tumor maintenance. These models may be useful for developing improved therapies for patients with lung cancers bearing EGFR mutations.

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Authors
Politi, K., Zakowski, M. F., Fan, P.-D., Schonfeld, E. A., Pao, W., & Varmus, H. E.
Affiliations
Memorial Sloan Kettering Cancer Center (US)
Venue
Genes & Development
Published
2006-05-16
Volume
20
Issue
11
Pages
1496-1510
ISSN
  • 0890-9369 (ISSN-L)
  • 1549-5477
OpenAlex
W2126181231
Cited by
478
References
50
Citations by year
2026: 10 · 2025: 14 · 2024: 18 · 2023: 23 · 2022: 15 · 2021: 17 · 2020: 15 · 2019: 9 · 2018: 24 · 2017: 11 · 2016: 23 · 2015: 38 · 2014: 25 · 2013: 19 · 2012: 27
Type
posted content
Language
en
Open access
Locations
  • Genes & Development (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Memorial Sloan-Kettering Cancer Center
  • Dana-Farber Cancer Institute
  • University of Cincinnati
  • National Institutes of Health (R24 CA83084)
  • Genentech
  • National Cancer Institute (K08CA097980, R24CA083084)
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Lung Cancer Treatments and Mutations
  • Health Sciences › Medicine › Oncology › HER2/EGFR in Cancer Research
  • Health Sciences › Medicine › Oncology › Lung Cancer Research Studies
Keywords
lung adenocarcinoma, epidermal growth factor receptor, EGFR mutation, exon 19 deletion, L858R mutation, tyrosine kinase inhibitors, erlotinib, gefitinib, transgenic mouse model, alveolar type II cells, tumor regression, tumor maintenance, doxycycline-inducible expression, bronchioloalveolar carcinoma
MeSH terms
Adenocarcinoma, Animals, Base Sequence, Humans, Lung Neoplasms, Magnetic Resonance Imaging, Phosphorylation, Protein-Tyrosine Kinases, Down-Regulation, DNA Primers, Mice, ErbB Receptors

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