Abstract:
:New systems genetics approaches are needed to rapidly identify host genes and genetic networks that regulate complex disease outcomes. Using genetically diverse animals from incipient lines of the Collaborative Cross mouse panel, we demonstrate a greatly expanded range of phenotypes relative to classical mouse models of SARS-CoV infection including lung pathology, weight loss and viral titer. Genetic mapping revealed several loci contributing to differential disease responses, including an 8.5Mb locus associated with vascular cuffing on chromosome 3 that contained 23 genes and 13 noncoding RNAs. Integrating phenotypic and genetic data narrowed this region to a single gene, Trim55, an E3 ubiquitin ligase with a role in muscle fiber maintenance. Lung pathology and transcriptomic data from mice genetically deficient in Trim55 were used to validate its role in SARS-CoV-induced vascular cuffing and inflammation. These data establish the Collaborative Cross platform as a powerful genetic resource for uncovering genetic contributions of complex traits in microbial disease severity, inflammation and virus replication in models of outbred populations.
journal_name
PLoS Genetjournal_title
PLoS geneticsauthors
Gralinski LE,Ferris MT,Aylor DL,Whitmore AC,Green R,Frieman MB,Deming D,Menachery VD,Miller DR,Buus RJ,Bell TA,Churchill GA,Threadgill DW,Katze MG,McMillan L,Valdar W,Heise MT,Pardo-Manuel de Villena F,Baric RSdoi
10.1371/journal.pgen.1005504subject
Has Abstractpub_date
2015-10-09 00:00:00pages
e1005504issue
10eissn
1553-7390issn
1553-7404pii
PGENETICS-D-15-00734journal_volume
11pub_type
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