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Tumorigenesis and eye abnormalities in transgenic mice expressing MSV-SV40 large T-antigen.

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Balling,  R.
Department of Molecular Cell Biology, MPI for biophysical chemistry, Max Planck Society;

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Gruss,  P.
Department of Molecular Cell Biology, MPI for biophysical chemistry, Max Planck Society;

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Citation

Theuring, F., Gotz, W., Balling, R., Korf, H. W., Schulze, F., Herken, R., et al. (1990). Tumorigenesis and eye abnormalities in transgenic mice expressing MSV-SV40 large T-antigen. Oncogene, 5(2), 225-232.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-0E6A-2
Abstract
Transgenic mice which expressed SV40 large T-antigen under the control of the MSV enhancer and the SV40 promoter were generated. In animals containing an intact MSV enhancer, total lens cataracts and neuroectodermal brain tumors, originating in the pineal organ were observed. In contrast, 5' deletion of the MSV enhancer to a residual 53 bp resulted in a different spectrum of pathologies. Whilst lens cataracts still occurred, no brain tumors could be detected. Instead, fibrosarcomas and adenocarcinomas of the kidneys were induced. In addition, tumors of the endocrine pancreas were observed with both transgene constructs. We conclude that the MSV enhancer element is sufficient to direct the expression of the viral reporter gene to the lens and the pineal organ in transgenic mice. Deletion of the MSV enhancer correlates with the loss of DNA elements responsible for the pineal cell specific expression of SV40 large T-antigen.