Epigenetics of Virus-Induced Tumors: Perspectives for Therapeutic Targeting

Svetlana Vinokurova1

  • 1NN Blokhin Russian Cancer Research Center, Moscow. Russian Federation.

Insights

Human oncoviruses, or cancer-causing viruses, contribute to 15-20% of global cancers. Epigenetic reprogramming is key to understanding and treating virus-induced cancers with new drug therapies.

Area of Science:

  • Oncology
  • Virology
  • Epigenetics

Background:

  • Approximately 15-20% of human cancers globally are linked to viral infections.
  • Seven human DNA and RNA viruses, known as oncoviruses, are recognized carcinogens contributing to diverse cancer types.
  • Oncoviruses employ sophisticated molecular strategies, including viral oncoproteins and non-coding RNAs, to manipulate host cellular pathways for replication and survival.

Purpose of the Study:

  • To review the critical role of epigenetic reprogramming in virus-induced carcinogenesis.
  • To explore how understanding the interplay between oncoviruses and host epigenetics can inform cancer intervention strategies.
  • To highlight advancements in epigenetic pharmacological tools for modulating virus-host interactions and treating virus-associated cancers.

Main Methods:

  • Literature review focusing on molecular mechanisms of oncoviruses.
  • Analysis of epigenetic alterations in virus-induced cancers.
  • Examination of current and ongoing clinical trials involving epigenetic drugs for viral cancers.

Main Results:

  • Oncoviruses utilize common strategies to induce cancer, affecting cellular processes at genetic and epigenetic levels.
  • Epigenetics provides crucial insights into the complex interactions between oncoviruses and host cells.
  • Progress in epigenetic drug development offers new therapeutic avenues for virus-induced cancers.

Conclusions:

  • Epigenetic reprogramming is a central mechanism in virus-induced carcinogenesis.
  • Targeting epigenetic modifications presents promising strategies for novel cancer therapies.
  • Clinical trials investigating epigenetic drugs show potential for treating various virus-associated cancers, often in combination therapies.

Related Concept Videos

Tumor Immunotherapy01:27

Tumor Immunotherapy

Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.
2.1K
Mechanisms of Retrovirus-induced Cancers01:51

Mechanisms of Retrovirus-induced Cancers

Retroviruses are RNA viruses that have been shown to cause cancers in diverse species, including chickens, mice, cats, and monkeys. The RNA genomes of these viruses are first reverse-transcribed into single and then double-stranded DNA (dsDNA) copies. This dsDNA called proviral DNA then integrates into the host genome. Subsequently, the host cell transcribes the proviral DNA in concert with the chromosomal DNA. This leads to the production of viral RNA and proteins that assemble at the host...
7.1K
Cancer Therapies02:49

Cancer Therapies

Cancer therapies are various modes of treatment, such as surgery, radiation therapy, and chemotherapy that are administered to cancer patients.
However, cancer treatments can pose several challenges, as therapies used to kill cancer cells are generally also toxic to normal cells. Moreover, cancer cells mutate rapidly and can develop resistance to chemical agents or radiation therapy. Besides, all types of cancer cells may not respond to the same therapy. Some cancer cells respond to one...
10.3K
Microorganisms in Medicine and Therapeutics01:29

Microorganisms in Medicine and Therapeutics

Microorganisms play a fundamental role in vaccine development, gene therapy, and therapeutic production. Their biological properties are harnessed to advance medicine and public health. Beyond immunization, microorganisms contribute to gut health, antibiotic synthesis, and genetic disease treatment.Live Attenuated and Inactivated VaccinesLive attenuated vaccines, such as the measles, mumps, and rubella (MMR) vaccine, utilize weakened forms of pathogens to closely resemble natural infections.
1.2K
Targeted Cancer Therapies02:57

Targeted Cancer Therapies

The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against...
9.0K
Cancer Vaccines01:30

Cancer Vaccines

Cancer treatment vaccines are a rapidly evolving field that offers a promising approach to immunotherapy. Unlike traditional vaccines that prevent diseases, cancer treatment vaccines are designed to treat existing cancers by stimulating the immune system to recognize and attack cancer cells.
Cancer vaccines come in two categories: preventive (prophylactic) and treatment (active). Preventive vaccines, such as the Human Papillomavirus (HPV) vaccine, protect against viruses that cause certain...
1.2K