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[Viruses and mammary carcinogenesis]
Abstract:
Bittner virus has been extensively studied by recent electron microscopy and molecular biology techniques. The structure, the biochemical, physical and antigenic properties of the RNA tumor viruses - i.e. the mouse mammary tumor virus (MMTV) - are well known. Recent observations in human tissues of particles similar to animal viruses that are known to be oncogenic have raised the hypothesis of the role of viruses in human cancer. In mice, breast cancer can be caused by a virus - the Bittner virus or MMTV - that is usually transmitted from mother to offspring in the milk. The discovery of such virus particles in human milks and breast cancer tissues could provide data about a viral aetiology of human breast cancer.
Insights
The Bittner virus, or mouse mammary tumor virus (MMTV), is a known cause of breast cancer in mice. Similar virus particles found in human tissues suggest a potential viral role in human breast cancer.
Area of Science:
- Virology
- Oncology
- Molecular Biology
Context:
- The mouse mammary tumor virus (MMTV), also known as Bittner virus, is a well-characterized oncogenic RNA virus in mice.
- Particles resembling known oncogenic animal viruses have been observed in human tissues, prompting investigation into viral roles in human cancers.
Purpose:
- To explore the potential viral etiology of human breast cancer by examining similarities to the Bittner virus (MMTV) model in mice.
- To investigate the presence of virus particles in human milks and breast cancer tissues.
Summary:
- The Bittner virus (MMTV) is extensively studied, with its properties well-documented through electron microscopy and molecular biology.
- MMTV causes breast cancer in mice and is transmitted maternally via milk.
- The discovery of similar virus particles in human breast cancer tissues and milk could support a viral hypothesis for human breast cancer.
Impact:
- Provides a basis for investigating viral links to human breast cancer.
- Highlights the importance of comparative studies between animal and human oncogenic viruses.
- Could lead to new diagnostic or therapeutic strategies for breast cancer if a viral cause is confirmed.