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Hamster ependymomas produced by intracerebral inoculation of a human papovavirus (MMV)
Journal of the National Cancer Institute
|April 1, 1976
Abstract:
Ependymomas were produced in 3 of 11 newborn hamsters inoculated intracerebrally with a human papovavirus (MMV) isolated from a malignant lymphoma of the brain of a child with Wiskott-Aldrich syndrome. One of the tumors was serially transplanted into weanling hamsters. Cells from the transplanted tumors and from cell cultures derived from these tumors contained an intranuclear "T" antigen that reacted with simian virus 40 T antibody.
Insights
Human papovavirus (MMV) induced brain tumors called ependymomas in newborn hamsters. Tumor cells contained a "T" antigen, similar to that found in simian virus 40 infections.
Area of Science:
- Neuro-oncology
- Virology
- Immunology
Background:
- Wiskott-Aldrich syndrome is a rare genetic disorder affecting the immune system.
- Human papovaviruses are a group of viruses known to cause tumors.
- Intracranial tumors, such as ependymomas, can arise from various causes.
Purpose of the Study:
- To investigate the oncogenic potential of a specific human papovavirus (MMV) in vivo.
- To characterize the biological properties of MMV-induced tumors in a hamster model.
- To identify viral antigens within the induced tumors.
Main Methods:
- Intracerebral inoculation of newborn hamsters with MMV.
- Serial transplantation of induced tumors in weanling hamsters.
- Immunohistochemical analysis of tumor cells for intranuclear "T" antigen using SV40 T antibody.
Main Results:
- Ependymomas were successfully induced in 3 out of 11 inoculated hamsters.
- Tumorigenicity was confirmed through serial transplantation.
- An intranuclear "T" antigen, reactive with SV40 T antibody, was detected in tumor cells.
Conclusions:
- The human papovavirus MMV is oncogenic and can induce ependymomas in hamsters.
- The presence of a cross-reactive "T" antigen suggests a biological relationship or shared antigenic properties with SV40.
- This study provides evidence for the potential role of papovaviruses in human brain tumor development.