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Multiple tumor types appear in a transgenic mouse with the ras oncogene
1Department of Pathology, School of Medicine, University of California, Davis 95616.
The American Journal of Pathology
|April 1, 1993
Summary
A novel transgenic mouse model develops diverse tumors, including malignant fibrous histiocytoma-like lesions and odontogenic tumors. This model offers insights into tumor progression and human cancer subtypes.
Area of Science:
- Oncology
- Genetics
- Pathology
Background:
- Transgenic mouse models are crucial for studying human diseases.
- Oncogenes play a significant role in tumor development.
Purpose of the Study:
- To characterize the spectrum of neoplasms in a newly developed transgenic mouse strain.
- To evaluate the potential of this model for understanding specific human tumors and tumor progression.
Main Methods:
- Generation of a transgenic mouse line utilizing the zeta-globin promoter and the vHa-ras oncogene.
- Histopathological analysis of developed tumors.
Main Results:
- The transgenic mice developed a variety of mesenchymal and epithelial tumors.
- Predominant mesenchymal tumors were dermal spindle cell tumors resembling human malignant fibrous histiocytomas.
- Observed epithelial tumors included keratoacanthomas, squamous cell carcinomas, and unusual odontogenic tumors.
- Hepatosplenomegaly associated with myelocytic or monocytic differentiation was noted.
Conclusions:
- This transgenic mouse model is a valuable resource for studying malignant fibrous histiocytoma-like lesions and odontogenic tumors.
- The model provides a platform for investigating mechanisms of tumor progression.