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DNA-dependent protein kinase: Epigenetic alterations and the role in genomic stability of cancer

  • Vazhappilly Cijo George
  • , Shabbir Ahmed Ansari
  • , Vipin Shankar Chelakkot
  • , Ayshwarya Lakshmi Chelakkot
  • , Chaithanya Chelakkot
  • , Varsha Menon
  • , Wafaa Ramadan
  • , Kannatt Radhakrishnan Ethiraj
  • , Raafat El-Awady
  • , Theodora Mantso
  • , Melina Mitsiogianni
  • , Mihalis I. Panagiotidis
  • , Graham Dellaire
  • , H. P. Vasantha Rupasinghe
  • Dalhousie University
  • The University of Texas Health Science Center at Tyler
  • Memorial University of Newfoundland
  • Duke-NUS Medical School
  • Pohang University of Science and Technology
  • Vellore Institute of Technology
  • Cairo University
  • Northumbria University

Research output: Contribution to journalReview articlepeer-review

14 Scopus citations

Abstract

DNA-dependent protein kinase (DNA-PK), a member of phosphatidylinositol-kinase family, is a key protein in mammalian DNA double-strand break (DSB) repair that helps to maintain genomic integrity. DNA-PK also plays a central role in immune cell development and protects telomerase during cellular aging. Epigenetic deregulation due to endogenous and exogenous factors may affect the normal function of DNA-PK, which in turn could impair DNA repair and contribute to genomic instability. Recent studies implicate a role for epigenetics in the regulation of DNA-PK expression in normal and cancer cells, which may impact cancer progression and metastasis as well as provide opportunities for treatment and use of DNA-PK as a novel cancer biomarker. In addition, several small molecules and biological agents have been recently identified that can inhibit DNA-PK function or expression, and thus hold promise for cancer treatments. This review discusses the impact of epigenetic alterations and the expression of DNA-PK in relation to the DNA repair mechanisms with a focus on its differential levels in normal and cancer cells.

Original languageEnglish
Pages (from-to)92-105
Number of pages14
JournalMutation Research - Reviews in Mutation Research
Volume780
DOIs
StatePublished - 1 Apr 2019

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

Keywords

  • Cancer
  • DNA damage
  • DNA repair
  • DNA-PK
  • Epigenetic alternations
  • Genomic stability

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