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Radiation Effects Department, National Radiological Protection Board, Chilton, Didcot, Oxon, OX11 0RQ, United Kingdom [N. L. D., A. E., J. H., M. C., J. M., M. E., R. C., A. S.]; Department of Pathology and Microbiology, School of Medical Sciences, University Of Bristol, University Walk, Bristol BS8 1TD, United Kingdom [N. L. D.]; and Department of Experimental Radiation Oncology, M. D. Anderson Cancer Center, Houston, Texas 77030 [M. M. W.]
Ionizing radiation (IR) is a well-characterized carcinogen in humans and mice. The BALB/c mouse strain is unusually sensitive to IR-induced tissue damage and cancer development in a range of organs, suggestive of a partial defect in DNA damage response. This has been confirmed by finding BALB/c-specific functional polymorphism in Prkdc, a gene on mouse chromosome 16 that encodes the catalytic subunit of DNA-dependent protein kinase. PrkdcBALB has been associated with increased susceptibility to IR-induced mammary and lymphatic neoplasia. Here, we provide evidence that chromosome 16 segments from BALB/c interact with ApcMin (multiple intestinal neoplasia) and specifically enhance IR-induced adenoma development in the upper part of the small intestine.
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S. Pazzaglia, M. Mancuso, M. Tanori, M. J. Atkinson, P. Merola, S. Rebessi, V. Di Majo, V. Covelli, H. Hahn, and A. Saran Modulation of Patched-Associated Susceptibility to Radiation Induced Tumorigenesis by Genetic Background Cancer Res., June 1, 2004; 64(11): 3798 - 3806. [Abstract] [Full Text] [PDF] |
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