alexa Epigenetic gene silencing in cancer - a mechanism for early oncogenic pathway addiction?
Biomedical Sciences

Biomedical Sciences

Biology and Medicine

Author(s): Baylin SB, Ohm JE

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Abstract Chromatin alterations have been associated with all stages of tumour formation and progression. The best characterized are epigenetically mediated transcriptional-silencing events that are associated with increases in DNA methylation - particularly at promoter regions of genes that regulate important cell functions. Recent evidence indicates that epigenetic changes might 'addict' cancer cells to altered signal-transduction pathways during the early stages of tumour development. Dependence on these pathways for cell proliferation or survival allows them to acquire genetic mutations in the same pathways, providing the cell with selective advantages that promote tumour progression. Strategies to reverse epigenetic gene silencing might therefore be useful in cancer prevention and therapy. This article was published in Nat Rev Cancer and referenced in Biology and Medicine

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