Abstract
The notion of epigenetics encompasses various modifications of chromatin, including DNA methylation and post-translational modifications of histone proteins that can be stably transmitted through mitosis. Epigenetics plays a fundamental role in normal cell physiology as it is molecularly involved in virtually all chromatin-associated processes, including gene expression, DNA replication and repair. Alterations in the global profile of epigenetic modifications are commonly observed in cancer and are believed to be associated with the establishment and clonal maintenance of an aberrant gene expression pattern. Recent technological advances have enabled to assess the epigenetic signature of a given cell type in a genome-wide manner. These comparative epigenome studies have significantly increased our understanding of the oncogenic process. In addition, they constitute promising tools for improved classification and diagnosis of cancer patients, ultimately leading to the design of personalised therapies. In this chapter, we focus on the role of epigenetics in normal and pathological cell development. We outline recent large-scale assays of epigenetic profiling in normal and cancer tissue samples as well as pertinent new discoveries linking epigenetics and cancer.
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Acknowledgements
Work in the PF laboratory is supported by institutional grants from Inserm and the CNRS, and by specific grants from the “Fondation Princesse Grace de Monaco”, the “Association pour la Recherche sur le Cancer” (ARC), the “Agence Nationale de la Recherche” (ANR), the “Institut National du Cancer” (INCa) and the Commission of the European Communities. We extend our acknowledgements to Pierre Cauchy for critical proofreading of the manuscript. AP was supported by a Marie Curie research training fellowship (MRTN-CT-2006-035733) and is now supported by the “Fondation pour la Recherche Medicale” (FRM). JJ was supported by the “Fondation Franco-Chinoise pour la Science et ses Applications”, the China Scholarship Council and Marseille-Nice Genopole.
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Pekowska, A., Zacarias-Cabeza, J., Jia, J., Ferrier, P., Spicuglia, S. (2012). The Role of Epigenetics in Cancer: From Molecular Function to High-Throughput Assays. In: Russo, A., Iacobelli, S., Iovanna, J. (eds) Diagnostic, Prognostic and Therapeutic Value of Gene Signatures. Current Clinical Pathology. Humana Press. https://doi.org/10.1007/978-1-61779-358-5_9
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