Implications of viral infection in cancer development

Caroline Kellogg1, Valentina L Kouznetsova2, Igor F Tsigelny3

  • 1REHS Program, San Diego Supercomputer Center, University of California, San Diego, CA, USA.

Insights

Human oncogenic viruses can cause cancer by altering cell growth, immortalization, and inflammation pathways. This review examines how twelve viruses use these mechanisms, including viral DNA insertion and miRNA deregulation, to promote cancer development.

Area of Science:

  • Virology
  • Oncology
  • Molecular Biology

Background:

  • Viruses have been implicated in cancer development since 1964.
  • Viral proteins can mimic cancer-driving mutations by modulating cellular pathways.
  • Viral DNA integration and microRNA (miRNA) deregulation are key mechanisms in viral oncogenesis.

Purpose of the Study:

  • To review the role of twelve distinct viruses in cancer development.
  • To elucidate the specific mechanisms viruses employ to induce oncogenesis.
  • To enhance understanding of cancer development through viral transformation insights.

Main Methods:

  • Literature review of oncogenic viruses and their mechanisms.
  • Analysis of viral modulation of cellular proliferation, immortalization, and inflammation.
  • Examination of viral DNA integration and miRNA deregulation in oncogenesis.

Main Results:

  • Twelve human oncogenic viruses are discussed.
  • Viruses utilize modulation of cellular pathways, DNA insertion, and miRNA deregulation to promote cancer.
  • Viral proteins can functionally replace or mimic oncogenic mutations.

Conclusions:

  • Understanding viral oncogenesis mechanisms provides insight into general cancer development.
  • Targeting viral pathways could offer novel cancer prevention or treatment strategies.
  • Further research into specific viral-host interactions is crucial for advancing oncology.

Related Concept Videos

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...
5.4K
Rous Sarcoma Virus (RSV) and Cancer01:03

Rous Sarcoma Virus (RSV) and Cancer

Rous Sarcoma virus or RSV was discovered by F. Peyton Rous in the year 1911 as a filterable transmissible agent that could cause tumors in chickens. He won a Nobel Prize for this discovery in 1966. His experiments clearly demonstrated that some cancers could be caused by infectious agents and led to the discovery of many more cancer-causing viruses in animals as well as humans.
RSV is a retrovirus that contains two copies of a plus-strand  RNA genome. Its genome consists of four main open...
5.6K
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...
570
Cancer Prevention02:59

Cancer Prevention

Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
Some...
6.6K
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...
8.4K
Cancer02:18

Cancer

Cancers arise due to mutations in genes involved in the regulation of cell division, which leads to unrestricted cell proliferation. Modern science and medicine have made great strides in the understanding and treatment of cancer, including eradicating cancer in some patients. However, there is still no cure for cancer. This is largely due to the fact that cancer is a large group of many diseases.
51.0K