Project description:The intent of the experiment was to identify genes that were differentially expressed between dogs affected with anterior cruciate ligament (ACL) rupture and breed-matched controls. Anterior cruciate ligament and knee synovial tissue biopsies were collected from 4 ACL rupture affected cases and 4 unaffected control dogs. Cases and controls were matched as closely as possible based on breed, sex, neutered status, age, and weight. Medications that the dogs were taking at the time of sample collection were also considered. We prioritized sample size and quality above all other variables, therefore, two matched pairs of Golden Retrievers were chosen with two matched pairs of Labrador Retrievers for this analysis. Tissues from cases were collected during knee stabilization surgery. Tissues from unaffected control dogs were collected from dogs undergoing pelvic limb amputation or euthanasia for reasons unrelated to this study. Illumina TruSeq RNA libraries were constructed and 150bp paired-end sequencing was performed using the Illumina Hi-Seq 2500 platform. Table 1. Breed, sex, age, and weight of matched case and control pairs chosen for RNA sequencing analysis Cases Matched Controls Breed Sex Age (yr) Weight (kg) Breed Sex Age (yr) Weight (kg) GR1 CM 8.8 30.5 GR2 CM 14.9 N/A GR3 CM 5.6 44.0 GR4 CM 3.9 34.0 LR1 CM 9.7 36.0 LR2 CM 12.7 28.5 LR3 CM 13.3 36.0 LR4 CM 13.5 35.0 GR = Golden Retriever. LR = Labrador Retriever. CM= castrated male. Weight at the time of death was not available for one dog.
Project description:Copper is an essential trace element, but can become toxic when present in abundance. The severe effects of copper-metabolism imbalance are illustrated by the inherited disorders Wilson disease and Menkes disease. The Labrador retriever dog breed is a novel non-rodent model for copper-storage defects displaying identical phenotypic alterations and carrying mutations in genes known to be involved in copper transport. Besides disease initiation and progression of copper accumulation, the molecular mechanisms and pathways involved in copper accumulation and eventually progression towards copper associated chronic hepatitis still remains unclear. Using liver tissue of Labrador retrievers in different stages of copper-associated hepatitis, expression levels targeted at candidate genes as well as transcriptome microarrays, have shed light on involved molecular pathways. At the initial phase, viz. increased hepatic copper levels, transcriptomic alterations in livers revealed enrichment for cell adhesion, developmental, inflammatory, and cytoskeleton pathways. Upregulation of targeted MT1A and COMMD1 mRNA shows the livers first response to rising intrahepatic copper concentrations. In livers with copper-associated hepatitis mainly an activation of inflammatory pathways is detected. Once the hepatitis is in the chronic stage, transcriptional differences are found in cell adhesion adaptations and cytoskeleton remodelling. In view of the high similarities in hepatopathies between men and dog extrapolation of these dog data into human biomedicine seems feasible.
2017-05-02 | GSE86932 | GEO
Project description:Genetic variants associated with collagen VI deficient congenital muscular dystrophy in Labrador Retrievers
Project description:A Mutation in the SUV39H2 Gene in Labrador Retrievers with Hereditary Nasal Parakeratosis (HNPK) Provides Insights into the Epigenetics of Keratinocyte Differentiation
| PRJEB5874 | ENA
Project description:Dwarfism in Tibetan Terriers with an LHX3 mutation
Project description:Disproportionate short stature refers to a heterogeneous group of hereditary disorders, which are classified according to their mode of inheritance, their clinical skeletal and non-skeletal manifestations, and their radiological characteristics. In the present study, we report on a novel autosomal recessive osteocutaneous disorder that we termed short stature-onychodysplasia-facial dysmorphism-hypotrichosis (SOFT) syndrome. we identified a homozygous point mutation (p.L171P) in POC1A (Centriolar Protein Homolog A). The mutation affects a highly conserved amino acid residue and is predicted to interfere with protein function. To gain insight into the pathomechanisms underlying the deleterious effect of the causative mutation, we compared transcription profiles of patient and control fibroblasts.