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Articles by Todd E. Druley in JoVE
Detektering av sällsynta genomiska varianter från poolad sekvensering med SPLINTER
Francesco Vallania1, Enrique Ramos1, Sharon Cresci2, Robi D. Mitra1, Todd E. Druley1,3
1Center for Genome Sciences and Systems Biology, Department of Genetics, Washington University School of Medicine, 2Department of Internal Medicine, Washington University School of Medicine, 3Department of Pediatrics, Washington University School of Medicine
Poolad DNA-sekvensering är en snabb och kostnadseffektiv strategi för att upptäcka sällsynta varianter som är förknippade med komplexa fenotyper i stora kohorter. Här beskriver vi beräkningsmässig analys av poolade, nästa generations sekvensering av 32 cancer-relaterade gener med användning av paketet SPLINTER mjukvara. Denna metod är skalbar och tillämplig på alla fenotyp av intresse.
Other articles by Todd E. Druley on PubMed
Human Molecular Genetics. Apr, 2010 | Pubmed ID: 20045868
Distal arthrogryposis type I (DA1) is a disorder characterized by congenital contractures of the hands and feet for which few genes have been identified. Here we describe a five-generation family with DA1 segregating as an autosomal dominant disorder with complete penetrance. Genome-wide linkage analysis using Affymetrix GeneChip Mapping 10K data from 12 affected members of this family revealed a multipoint LOD(max) of 3.27 on chromosome 12q. Sequencing of the slow-twitch skeletal muscle myosin binding protein C1 (MYBPC1), located within the linkage interval, revealed a missense mutation (c.706T>C) that segregated with disease in this family and causes a W236R amino acid substitution. A second MYBPC1 missense mutation was identified (c.2566T>C)(Y856H) in another family with DA1, accounting for an MYBPC1 mutation frequency of 13% (two of 15). Skeletal muscle biopsies from affected patients showed type I (slow-twitch) fibers were smaller than type II fibers. Expression of a green fluorescent protein (GFP)-tagged MYBPC1 construct containing WT and DA1 mutations in mouse skeletal muscle revealed robust sarcomeric localization. In contrast, a more diffuse localization was seen when non-fused GFP and MYBPC1 proteins containing corresponding MYBPC3 amino acid substitutions (R326Q, E334K) that cause hypertrophic cardiomyopathy were expressed. These findings reveal that the MYBPC1 is a novel gene responsible for DA1, though the mechanism of disease may differ from how some cardiac MYBPC3 mutations cause hypertrophic cardiomyopathy.