Abstract:
:The Collaborative Cross (CC) is a mouse recombinant inbred strain panel that is being developed as a resource for mammalian systems genetics. Here we describe an experiment that uses partially inbred CC lines to evaluate the genetic properties and utility of this emerging resource. Genome-wide analysis of the incipient strains reveals high genetic diversity, balanced allele frequencies, and dense, evenly distributed recombination sites-all ideal qualities for a systems genetics resource. We map discrete, complex, and biomolecular traits and contrast two quantitative trait locus (QTL) mapping approaches. Analysis based on inferred haplotypes improves power, reduces false discovery, and provides information to identify and prioritize candidate genes that is unique to multifounder crosses like the CC. The number of expression QTLs discovered here exceeds all previous efforts at eQTL mapping in mice, and we map local eQTL at 1-Mb resolution. We demonstrate that the genetic diversity of the CC, which derives from random mixing of eight founder strains, results in high phenotypic diversity and enhances our ability to map causative loci underlying complex disease-related traits.
journal_name
Genome Resjournal_title
Genome researchauthors
Aylor DL,Valdar W,Foulds-Mathes W,Buus RJ,Verdugo RA,Baric RS,Ferris MT,Frelinger JA,Heise M,Frieman MB,Gralinski LE,Bell TA,Didion JD,Hua K,Nehrenberg DL,Powell CL,Steigerwalt J,Xie Y,Kelada SN,Collins FS,Yang IVdoi
10.1101/gr.111310.110subject
Has Abstractpub_date
2011-08-01 00:00:00pages
1213-22issue
8eissn
1088-9051issn
1549-5469pii
gr.111310.110journal_volume
21pub_type
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