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Schabath MB, Welsh EA, Fulp WJ, Chen L, Teer JK, Thompson ZJ, Engel BE, Xie M, Berglund AE, Creelan BC, Antonia SJ, Gray JE, Eschrich SA, Chen DT, Cress WD, Haura EB, Beg AA. Differential association of STK11 and TP53 with KRAS mutation-associated gene expression, proliferation and immune surveillance in lung adenocarcinoma. Oncogene 2015; 35:3209-16. [PMID: 26477306 PMCID: PMC4837098 DOI: 10.1038/onc.2015.375] [Citation(s) in RCA: 236] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 07/26/2015] [Accepted: 08/03/2015] [Indexed: 12/17/2022]
Abstract
While mutations in the KRAS oncogene are amongst the most prevalent in human cancer, there are few successful treatments to target these tumors. It is also likely that heterogeneity in KRAS-mutant tumor biology significantly contributes to the response to therapy. We hypothesized that presence of commonly co-occurring mutations in STK11 and TP53 tumor suppressors may represent a significant source of heterogeneity in KRAS-mutant tumors. To address this, we utilized a large cohort of resected tumors from 442 lung adenocarcinoma patients with data including annotation of prevalent driver mutations (KRAS, EGFR) and tumor suppressor mutations (STK11 and TP53), microarray-based gene expression and clinical covariates including overall survival (OS). Specifically, we determined impact of STK11 and TP53 mutations on a new KRAS mutation-associated gene expression signature as well as previously defined signatures of tumor cell proliferation and immune surveillance responses. Interestingly, STK11, but not TP53 mutations, were associated with highly elevated expression of KRAS mutation-associated genes. Mutations in TP53 and STK11 also impacted tumor biology regardless of KRAS status, with TP53 strongly associated with enhanced proliferation and STK11 with suppression of immune surveillance. These findings illustrate the remarkably distinct ways through which tumor suppressor mutations may contribute to heterogeneity in KRAS-mutant tumor biology. In addition, these studies point to novel associations between gene mutations and immune surveillance that could impact the response to immunotherapy.
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Affiliation(s)
- M B Schabath
- Department of Cancer Epidemiology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - E A Welsh
- Department of Bioinformatics, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - W J Fulp
- Department of Biostatisics, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - L Chen
- Department of Biostatisics, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - J K Teer
- Department of Bioinformatics, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Z J Thompson
- Department of Biostatisics, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - B E Engel
- Cancer Biology Graduate Program, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - M Xie
- Cancer Biology Graduate Program, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - A E Berglund
- Department of Bioinformatics, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - B C Creelan
- Department of Thoracic Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - S J Antonia
- Department of Thoracic Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - J E Gray
- Department of Thoracic Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - S A Eschrich
- Department of Bioinformatics, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - D-T Chen
- Department of Biostatisics, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - W D Cress
- Department of Molecular Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - E B Haura
- Department of Thoracic Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - A A Beg
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
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