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Exploiting tumor epigenetics to improve oncolytic virotherapy

Nicole E Forbes1, Hesham Abdelbary, Mathieu Lupien

  • 1Center for Innovative Cancer Research, Ottawa Hospital Research Institute Ottawa, ON, Canada ; Faculty of Medicine, University of Ottawa Ottawa, ON, Canada.

Frontiers in Genetics
|September 25, 2013
PubMed

Insights

Oncolytic viruses (OVs) are promising cancer therapies that replicate within tumors. Tumor epigenetics influences OV effectiveness and suggests new therapeutic strategies for improved cancer treatment.

Area of Science:

  • Oncology
  • Virology
  • Genetics

Background:

  • Oncolytic viruses (OVs) are a promising class of anticancer biologics that leverage tumor-specific defects for replication and tumor selectivity.
  • Favorable tumor microenvironments, including increased metabolism and reduced immunity, support OV replication.
  • Despite progress, challenges like tumor heterogeneity impact OV efficacy and anti-tumor immune responses.

Purpose of the Study:

  • To review the role of the tumor epigenetic landscape in oncolytic virus (OV) infection.
  • To explore how epigenetic modifications influence OV therapy effectiveness.
  • To discuss therapeutic strategies that exploit tumor epigenetics to enhance OV-based cancer treatments.

Main Methods:

  • Literature review focusing on the interplay between tumor epigenetics and oncolytic virotherapy.
  • Analysis of current research on tumor heterogeneity and its impact on OV infection and immune response.
  • Synthesis of evidence regarding epigenetic modifications and their influence on OV efficacy.

Main Results:

  • Tumor epigenetics significantly impacts the tumor microenvironment's suitability for OV replication.
  • Epigenetic variations contribute to tumor heterogeneity, affecting OV infection efficiency and the induction of anti-tumor immunity.
  • Targeting epigenetic mechanisms presents a viable strategy to overcome OV resistance and improve therapeutic outcomes.

Conclusions:

  • Tumor epigenetics is a critical factor influencing the success of oncolytic virus (OV) therapy.
  • Understanding and manipulating the epigenetic landscape can enhance OV tumor selectivity and efficacy.
  • Exploiting tumor epigenetics offers a promising avenue for developing more effective oncolytic virotherapy strategies.
Keywords:
anti-viral responseantigen presentationcancerepigenetic modulationoncolytic virotherapytumor heterogeneity

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