Generation of rat mutants using a coat color-tagged Sleeping Beauty transposon system

Generation of rat mutants using a coat color-tagged Sleeping Beauty transposon system A significant barrier to exploiting the full potential of the rat as a biomedical model is the lack of tools to easily modify its germline. Here we show that a tyrosinase-tagged Sleeping Beauty transposon can be used as a simple, efficient method to generate rat mutants in vivo. By making two lines of transgenic rats, one carrying the transposon and another expressing the transposase in germ cells, we are able to obtain bigenic males in which transposition occurs in the germ cells. We show that transposition leads to the appearance of new coat colors in the offspring. Using such bigenic males, we obtained an average of 1.2 transpositions per gamete and identified 19 intragenic integration events among 96 transposition sites that were sequenced. In addition, gene trapping was confirmed and rats with evidence for transposon-induced dominant ocular anomalies were identified. These data suggest that the modified Sleeping Beauty transposon represents a powerful new tool for producing molecularly defined mutagenesis in the rat. Mammalian Genome Springer Journals

Generation of rat mutants using a coat color-tagged Sleeping Beauty transposon system

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Copyright © 2007 by Springer Science+Business Media, LLC
Life Sciences; Zoology ; Anatomy ; Cell Biology
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