Abstract
Fibroblast growth factor receptor 1 (FGFR1) is frequently amplified in human small-cell lung cancer (SCLC), but its contribution to SCLC and other lung tumors has remained elusive. Here, we assess the tumorigenic capacity of constitutive-active FGFR1 (FGFR1K656E) with concomitant RB and P53 depletion in mouse lung. Our results reveal a context-dependent effect of FGFR1K656E: it impairs SCLC development from CGRPPOS neuroendocrine (NE) cells, which are considered the major cell of origin of SCLC, whereas it promotes SCLC and low-grade NE bronchial lesions from tracheobronchial-basal cells. Moreover, FGFR1K656E induces lung adenocarcinoma (LADC) from most lung cell compartments. However, its expression is not sustained in LADC originating from CGRPPOS cells. Therefore, cell context and tumor stage should be taken into account when considering FGFR1 inhibition as a therapeutic option.
Copyright © 2020 The Authors. Published by Elsevier Inc. All rights reserved.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Adenocarcinoma of Lung / genetics
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Adenocarcinoma of Lung / metabolism
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Adenocarcinoma of Lung / pathology
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Animals
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Bronchi / pathology
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Cell Transformation, Neoplastic / drug effects
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Cell Transformation, Neoplastic / pathology
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Cisplatin / pharmacology
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Drug Resistance, Neoplasm / drug effects
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Gene Expression Regulation, Neoplastic
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Humans
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Integrases / metabolism
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Keratins / metabolism
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Lung Neoplasms / genetics
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Lung Neoplasms / metabolism*
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Lung Neoplasms / pathology*
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Mice
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Mutation / genetics
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Nasal Cavity / pathology
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Neurosecretory Systems / pathology
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Oncogenes*
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Pulmonary Alveoli / drug effects
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Pulmonary Alveoli / pathology
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Receptor, Fibroblast Growth Factor, Type 1 / genetics*
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Receptor, Fibroblast Growth Factor, Type 1 / metabolism
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Retinoblastoma Protein / metabolism*
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Small Cell Lung Carcinoma / genetics
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Small Cell Lung Carcinoma / metabolism*
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Small Cell Lung Carcinoma / pathology*
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Tumor Suppressor Protein p53 / metabolism*
Substances
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Retinoblastoma Protein
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Tumor Suppressor Protein p53
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Keratins
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Receptor, Fibroblast Growth Factor, Type 1
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Cre recombinase
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Integrases
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Cisplatin