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UCLA Engineering researchers help develop complete map of mouse genetic variation
Date:9/26/2011

For decades, laboratory mice have been widely used in research aimed at understanding which genes are involved in various illnesses. But actual variations in past gene sequences of mice were unknown. While researchers were able to determine that a variant affecting disease was in a certain region, they couldn't pinpoint the exact set of variants in that region.

Now, in new research recently published in the journal Nature, an international team of investigators that included UCLA researchers reports that it has sequenced the complete genomes of 17 strains of mice, including the most frequently used laboratory strains. The massive genetic catalog will provide scientists with unparalleled data for studying both how genetic variation affects phenotype and how mice evolved.

Researchers from UCLA's Henry Samueli School of Engineering and Applied Science played a key role in the study, using UCLA-developed technology to help sequence a nearly complete map of mouse genetic variation. Cataloging the full set of variants is a first step in identifying the actual variants affecting disease.

"The actual number of variants discovered is important because this gives the complete picture of how much variation exists in these mouse strains," said Eleazar Eskin, an associate professor of computer science at UCLA Engineering who develops techniques for solving computational problems that arise in the study of the genetic basis of disease. "Our group here at UCLA, and others, had tried to estimate this number from the data that existed previously, which only collected a fraction of the total variation."

The new study was led by groups from the Wellcome Trust Sanger Institute and the Wellcome Trust Centre for Human Genetics in Oxford.

Previous technology used in genetic sequencing would, in some cases, make ambiguous predictions, and the locations of these ambiguities resulted in missing entries in the catalog of genetic va
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Contact: Wileen Wong Kromhout
wwkromhout@support.ucla.edu
310-825-0540
University of California - Los Angeles
Source:Eurekalert

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