Mouse Model May Also Aid In Discovery of Gene Function
Researchers at the University of Pennsylvania School of Medicine have bred a mouse to model human L1 retrotransposons, the so-called "jumping genes." Retrotransposons are small stretches of DNA that are copied from one location in the genome and inserted elsewhere, typically during the genesis of sperm and egg cells. The L1 variety of retrotransposons, in particular, are responsible for about one third of the human genome.
The mouse model of L1 retrotransposition is expected to increase our understanding of the nature of jumping genes and their implication in disease. According to the Penn researchers, the mouse model may also prove to be a useful tool for studying how a gene functions by knocking it out through L1 insertion. Their report is in the December issue of Nature Genetics and currently available online (see below for URL).
Greg Lester | EurekAlert!
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