Cancer epigenetics: Linking basic biology to clinical medicine

Hsing Chen Tsai, Stephen B. Baylin

Research output: Contribution to journalReview articlepeer-review

Abstract

Cancer evolution at all stages is driven by both epigenetic abnormalities as well as genetic alterations. Dysregulation of epigenetic control events may lead to abnormal patterns of DNA methylation and chromatin configurations, both of which are critical contributors to the pathogenesis of cancer. These epigenetic abnormalities are set and maintained by multiple protein complexes and the interplay between their individual components including DNA methylation machinery, histone modifiers, particularly, polycomb (PcG) proteins, and chromatin remodeling proteins. Recent advances in genome-wide technology have revealed that the involvement of these dysregulated epigenetic components appears to be extensive. Moreover, there is a growing connection between epigenetic abnormalities in cancer and concepts concerning stem-like cell subpopulations as a driving force for cancer. Emerging data suggest that aspects of the epigenetic landscape inherent to normal embryonic and adult stem/progenitor cells may help foster, under the stress of chronic inflammation or accumulating reactive oxygen species, evolution of malignant subpopulations. Finally, understanding molecular mechanisms involved in initiation and maintenance of epigenetic abnormalities in all types of cancer has great potential for translational purposes. This is already evident for epigenetic biomarker development, and for pharmacological targeting aimed at reversing cancer-specific epigenetic alterations.

Original languageEnglish (US)
Pages (from-to)502-517
Number of pages16
JournalCell Research
Volume21
Issue number3
DOIs
StatePublished - Mar 2011

Keywords

  • Cancer epigenetics
  • DNA methylation
  • biomarkers
  • cancer stem cells
  • epigenetic therapy
  • polycomb proteins

ASJC Scopus subject areas

  • Molecular Biology
  • Cell Biology

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