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Microsatellite DNA variants between the inbred SENCAR mouse strains

The two‐stage model, initiation with 7,12‐dimethylbenz[a]anthracene and promotion with 12‐O‐tetradecanoylphorbol‐13‐acetate, of mouse skin carcinogenesis has been the protocol of choice to study the genetic susceptibility to carcinogens, the outbred SENCAR mouse being the most widely used skin tumor–sensitive animal model. Squamous cell carcinomas (SCCs) develop from many of the papillomas, making these mice a useful model for epithelial tumorigenesis and for the progression to malignant tumors. Nine different inbred strains derived from outbred SENCAR mice have been recently reported. Interestingly, these strains display different sensitivities to two‐stage carcinogenesis, and, in particular, some of them show a dissociation between susceptibility to papilloma development and the malignant conversion of these into SCC. However, the utility of these SENCAR strains for genetic mapping is limited by the lack of information regarding DNA variant alleles among them. Therefore, we analyzed the nine inbred strains with microsatellite markers distributed along the 20 chromosomes and in this article report the variant alleles found. The information presented is likely to be helpful for linkage analysis and marker‐assisted development of congenic strains between SENCAR‐derived inbred strains. Mol. Carcinog. 28:191–195, 2000. © 2000 Wiley‐Liss, Inc.