Multiplexed methylation profiles of tumor suppressor genes and clinical outcome in lung cancer
| Autor: | Julio Venditti, Patricia Puerta, Monica Castro, Liliana Gimenez, Silvia Quadrelli, Marta Sanchez-Carbayo, Laura Grau |
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| Rok vydání: | 2010 |
| Předmět: |
Male
Pathology medicine.medical_specialty Lung Neoplasms lcsh:Medicine Biology medicine.disease_cause General Biochemistry Genetics and Molecular Biology Cohort Studies Carcinoma Non-Small-Cell Lung Cell Line Tumor medicine Humans Genes Tumor Suppressor Lung cancer HLTF Aged Medicine(all) Biochemistry Genetics and Molecular Biology(all) Research lcsh:R Cancer General Medicine Methylation DNA Methylation Middle Aged medicine.disease Treatment Outcome H2AFX DNA methylation Cancer research Female DLC1 Carcinogenesis |
| Zdroj: | Journal of Translational Medicine Journal of Translational Medicine, Vol 8, Iss 1, p 86 (2010) |
| ISSN: | 1479-5876 |
| DOI: | 10.1186/1479-5876-8-86 |
| Popis: | Background Changes in DNA methylation of crucial cancer genes including tumor suppressors can occur early in carcinogenesis, being potentially important early indicators of cancer. The objective of this study was to examine a multiplexed approach to assess the methylation of tumor suppressor genes as tumor stratification and clinical outcome prognostic biomarkers for lung cancer. Methods A multicandidate probe panel interrogated DNA for aberrant methylation status in 18 tumor suppressor genes in lung cancer using a methylation-specific multiplex ligation-dependent probe amplification assay (MS-MLPA). Lung cancer cell lines (n = 7), and primary lung tumors (n = 54) were examined using MS-MLPA. Results Genes frequently methylated in lung cancer cell lines including SCGB3A1, ID4, CCND2 were found among the most commonly methylated in the lung tumors analyzed. HLTF, BNIP3, H2AFX, CACNA1G, TGIF, ID4 and CACNA1A were identified as novel tumor suppressor candidates methylated in lung tumors. The most frequently methylated genes in lung tumors were SCGB3A1 and DLC1 (both 50.0%). Methylation rates for ID4, DCL1, BNIP3, H2AFX, CACNA1G and TIMP3 were significantly different between squamous and adenocarcinomas. Methylation of RUNX3, SCGB3A1, SFRP4, and DLC1 was significantly associated with the extent of the disease when comparing localized versus metastatic tumors. Moreover, methylation of HTLF, SFRP5 and TIMP3 were significantly associated with overall survival. Conclusions MS-MLPA can be used for classification of certain types of lung tumors and clinical outcome prediction. This latter is clinically relevant by offering an adjunct strategy for the clinical management of lung cancer patients. |
| Databáze: | OpenAIRE |
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