Non-small cell lung cancer (Homo sapiens)
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Description
Non-small cell lung cancer (NSCLC) represents 85% of lung cancer and is defined as any type of epithelial lung cancer that is NOT small cell carcinoma, including squamous cell (SCC), adeno (AC) and large-cell carcinoma.
Mutations in NSCLC:
- KRAS (mutated in ~29% of NSCLC patients) inactivates its GTPase activity and the p21-RAS protein continuously transmits growth signals to the nucleus.
- Mutations or overexpression of EGFR (~22% of NSCLC patients) leads to increased proliferation.
- The abnormal fusion of EML4-ALK (~5% of NSCLC patients) leads to constitutive ALK activation, which causes cell proliferation, invasion, and inhibition of apoptosis.
- Inactivating mutation of p53 (~50% of NSCLC patients) leads to reduced apoptosis and proliferation.
- The protein encoded by the p16INK4a, CDKN2A, inhibits formation of CDK-cyclin-D complexes by competitive binding of CDK4 and CDK6. p16INK4a is mutated in ~12% of NSCLC patients, which leads to a loss of this inhibitory effect.
- RARB is a nuclear retinoic acid receptor whose function is often lost in NSCLC, leading to a loss of cell growth control. Phosphorylation sites were added based on information from PhosphoSitePlus (R), www.phosphosite.org.
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Bibliography
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- Deng WG, Nishizaki M, Fang B, Roth JA, Ji L; ''Induction of apoptosis by tumor suppressor FHIT via death receptor signaling pathway in human lung cancer cells.''; Biochem Biophys Res Commun, 2007 PubMed Europe PMC Scholia
- Hornbeck PV, Zhang B, Murray B, Kornhauser JM, Latham V, Skrzypek E; ''PhosphoSitePlus, 2014: mutations, PTMs and recalibrations.''; Nucleic Acids Res, 2015 PubMed Europe PMC Scholia
- Deng WG, Nishizaki M, Fang B, Roth JA, Ji L; ''Induction of apoptosis by tumor suppressor FHIT via death receptor signaling pathway in human lung cancer cells.''; Biochem Biophys Res Commun, 2007 PubMed Europe PMC Scholia
- ''AACR Project GENIE: Powering Precision Medicine through an International Consortium.''; Cancer Discov, 2017 PubMed Europe PMC Scholia
- Sasaki T, Rodig SJ, Chirieac LR, Jänne PA; ''The biology and treatment of EML4-ALK non-small cell lung cancer.''; Eur J Cancer, 2010 PubMed Europe PMC Scholia
- Connolly RM, Nguyen NK, Sukumar S; ''Molecular pathways: current role and future directions of the retinoic acid pathway in cancer prevention and treatment.''; Clin Cancer Res, 2013 PubMed Europe PMC Scholia
- ''KEGG Non-small cell lung cancer''; https://www.kegg.jp/dbget-bin/www_bget?pathway+map05223,
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