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Cancer and viruses

V T Chow1

  • 1Department of Microbiology, Faculty of Medicine, National University of Singapore.

Annals of the Academy of Medicine, Singapore
|March 1, 1993
PubMed
Summary
This summary is machine-generated.

Certain viruses, like hepatitis B and human papillomaviruses, are linked to human cancers. Understanding viral oncogenes and host gene interactions is key to cancer research and prevention strategies.

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Area of Science:

  • Oncology
  • Virology
  • Molecular Biology

Background:

  • Viruses are significant contributors to human cancer development globally, particularly in regions like Southeast Asia.
  • Several viruses, including Hepatitis B and C, Human Papillomaviruses, Epstein-Barr virus, and Human T-cell Leukaemia/Lymphoma viruses, are associated with specific cancers.
  • Human Immunodeficiency Virus indirectly contributes to Kaposi's sarcoma and B-cell lymphoma.

Purpose of the Study:

  • To explore the molecular mechanisms by which viruses induce cancer.
  • To understand the role of viral oncogenes and their interaction with host genes in carcinogenesis.
  • To highlight the significance of viral infections in cancer statistics and the need for effective intervention.

Main Methods:

  • Review of existing literature on virus-associated cancers.

Related Experiment Videos

  • Analysis of molecular pathogenesis involving viral oncogenes and host gene regulation (proto-oncogenes and anti-oncogenes).
  • Consideration of multi-factorial agents contributing to cancer development, including host susceptibility and environmental factors.

    • Main Results:

    • Viral oncogenes can be integrated into the host genome or exist as episomal molecules, instigating neoplastic proliferation.
    • Viral genes can activate cellular proto-oncogenes or inactivate tumor suppressor genes, contributing to cancer development.
    • The study of viral carcinogenesis provides critical insights into the fundamental processes of cancer at a molecular level.

    Conclusions:

    • The relationship between viruses and cancer is complex, involving long latency periods and multi-step events.
    • Effective vaccines, like the Hepatitis B vaccine, and transmission control are crucial for preventing virus-associated cancers.
    • Understanding viral carcinogenesis advances our knowledge of cancer development and informs public health strategies.