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Genetic background and 227Thorium as risk factors in biologically based models for induction of bone cancer in mice

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Abstract

We explore the potential for the biologically based two-stage clonal expansion model to make statements about the influence of genetic factors on the steps in the model. We find evidence that the different susceptibility of BALB/C and CBA/Ca mice to bone cancer after 227Thorium injection may be mostly due to different promotional responses to radiation. In BALB/C × CBA/Ca back-crossed mice, we analyzed the specific contribution of two individual loci in the carcinogenic process. This analysis suggests that the two high- or low-risk alleles are acting on promotion or on the background parameters, but not on radiation-induced initiation. Taken together with the comparison of CBA/Ca and BALB/C mice, this hints at the possibility that the two loci are candidates for modifying radiation-induced promotion.

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Acknowledgments

This work was in part supported by the EU under contract number FI6R-CT-2003-508842 and by DoReMi.

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Correspondence to W. F. Heidenreich.

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Heidenreich, W.F., Rosemann, M. Genetic background and 227Thorium as risk factors in biologically based models for induction of bone cancer in mice. Radiat Environ Biophys 51, 179–185 (2012). https://doi.org/10.1007/s00411-012-0409-x

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  • DOI: https://doi.org/10.1007/s00411-012-0409-x

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