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The role of epigenetic inactivation of 14-3-3sigma in human cancer Lodygin D; Hermeking HCell Res 2005[Apr]; 15 (4): 237-46Cancer cells show characteristic alterations in DNA methylation patterns. Aberrant CpG methylation of specific promoters results in inactivation of tumor suppressor genes and therefore plays an important role in carcinogenesis. The p53-regulated gene 14-3-3sigma undergoes frequent epigenetic silencing in several types of cancer, including carcinoma of the breast, prostate, and skin, suggesting that the loss of 14-3-3sigma expression may be causally involved in tumor progression. Functional studies demonstrated that 14-3-3sigma is involved in cell-cycle control and prevents the accumulation of chromosomal damage. The recent identification of novel 14-3-3sigma-associated proteins by a targeted proteomics approach implies that 14-3-3sigma regulates diverse cellular processes, which may become deregulated after silencing of 14-3-3sigma expression in cancer cells.|*Gene Silencing[MESH]|14-3-3 Proteins[MESH]|Biomarkers, Tumor/*genetics/*physiology[MESH]|CpG Islands/genetics[MESH]|DNA Damage/genetics[MESH]|DNA Methylation[MESH]|Disease Progression[MESH]|Exonucleases/*genetics/*physiology[MESH]|Exoribonucleases[MESH]|Gene Expression Regulation, Neoplastic[MESH]|Genes, Tumor Suppressor/physiology[MESH]|Humans[MESH]|Neoplasm Proteins/*genetics/*physiology[MESH]|Neoplasms/*genetics[MESH]|Promoter Regions, Genetic/genetics[MESH] |
