Deregulation of Retroelements as an Emerging Therapeutic Opportunity in Cancer

Charles A Ishak1, Marie Classon2, Daniel D De Carvalho3

  • 1Princess Margaret Cancer Centre, University Health Network, Toronto, ON M5G 2M9, Canada.

Trends in Cancer
|August 2, 2018
PubMed

Insights

Repetitive elements in the human genome are normally silenced but become active in cancer, potentially offering a new target for cancer therapies. Understanding this mechanism could lead to novel treatment strategies.

Area of Science:

  • Genomics
  • Cancer Biology
  • Epigenetics

Background:

  • Repetitive elements constitute nearly half of the human genome and are crucial for genome stability.
  • Their aberrant activation in cancer is linked to decreased DNA methylation and inactivation of tumor suppressor proteins.

Purpose of the Study:

  • To review the role of repetitive element dysregulation in cancer development.
  • To explore the potential of targeting these elements for cancer therapy.

Main Methods:

  • Literature review of recent discoveries in genomics, epigenetics, and cancer biology.
  • Analysis of the interplay between repetitive elements, DNA methylation, and tumor suppressor proteins.

Main Results:

  • Inappropriate activation of repetitive elements is a hallmark of cancer, driven by epigenetic alterations.
  • Elevated expression of repetitive elements can enhance responses to cancer therapies.

Conclusions:

  • Deregulation of repetitive elements contributes to oncogenesis.
  • Targeting misexpressed repetitive elements represents a potential therapeutic vulnerability in cancer.

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