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  • Title: DNA demethylating agents and epigenetic therapy of cancer.
    Author: Mani S, Herceg Z.
    Journal: Adv Genet; 2010; 70():327-40. PubMed ID: 20920754.
    Abstract:
    Epigenetic events have been associated with virtually every step of tumor development and progression, and epigenetic alterations are believed to occur early in tumor development and may precede the malignant process. In contrast to genetic changes, epigenetic alterations arise in a gradual manner, leading to a progressive silencing of specific genes. An important distinction between epigenetic and genetic alterations is intrinsic reversibility of the former, making cancer-associated changes in DNA methylation, histone modifications, and expression of noncoding RNAs attractive targets for therapeutic intervention. This realization has triggered an impressive quest for the development of "epigenetic drugs" and epigenetic therapies. A number of agents have been subjected to an intensive investigation, many of which have been found capable of altering epigenetic states, including DNA methylation patterns and histone modification states. Many of these agents are currently being tested in clinical trials, while several of them are already used in clinics. This review will focus on the recent advances in the development of epigenetic drugs based on the inhibition of DNA methylation. Combinatorial therapies that couple DNA demethylating agents with histone deacetylase inhibitors will also be discussed.
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