Epigenetic reprogramming in cancer: From diagnosis to treatment

Pedro Mikael da Silva Costa1,2, Sarah Leyenne Alves Sales1,3, Daniel Pascoalino Pinheiro4

  • 1Department of Physiology and Pharmacology, Drug Research and Development Center, Federal University of Ceará, Fortaleza, Ceará, Brazil.

Insights

Cancer epigenetics involves DNA methylation and histone changes, driving tumor growth and resistance. Epigenetic therapies offer a promising strategy to reverse these alterations for effective cancer treatment.

Area of Science:

  • Oncology
  • Epigenetics
  • Molecular Biology

Background:

  • Cancer is characterized by disruptions in the epigenetic program of gene expression.
  • Altered DNA methylation, histone modifications, and non-coding RNA (ncRNA) expression are key features of cancer cells.
  • Dynamic epigenetic changes contribute to tumor heterogeneity, self-renewal, and differentiation, leading to cancer stem cell phenotypes and treatment resistance.

Purpose of the Study:

  • To highlight significant epigenetic alterations in cancer.
  • To explore the potential of epigenetic modifications as biomarkers for early cancer diagnosis.
  • To review approved epigenetic therapies for cancer treatment.

Main Methods:

  • Review of existing literature on epigenetic alterations in cancer.
  • Analysis of the role of epigenetic changes in tumorigenesis and cancer stem cell biology.
  • Compilation of information on epigenetic therapies and their clinical applications.

Main Results:

  • Epigenetic dysregulation, including DNA methylation and histone modifications, is central to cancer initiation and progression.
  • Aberrant epigenetic reprogramming contributes to cancer stem cell characteristics, posing challenges in treatment and drug resistance.
  • Epigenetic modifications show potential as biomarkers for early cancer detection.

Conclusions:

  • Epigenetic alterations are fundamental to cancer development and progression.
  • Targeting epigenetic modifiers offers a promising therapeutic avenue, with reversible modifications enabling potential restoration of the normal epigenome.
  • Epigenetic therapies, used alone or in combination with other treatments like immunotherapy, represent a significant advancement in cancer treatment strategies.

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