Project description:To date, all of the prior osteoarthritic microarray studies in human tissue have focused on the overlying articular cartilage, meniscus, or synovium but not the underlying subchondral bone. In our previous study, our group developed a methodology for high quality RNA isolation from site-matched cartilage and bone from human knee joints, which allowed us to perform candidate gene expression analysis on the subchohndral bone (published on Osteoarthritis and Cartilage on Dec/5/2012 (doi: 10.1016/j.joca.2012.11.016). To the best of our knowledge, the current study is the first to successfully perform whole-genome microarray profiling analyses of human osteoarthritic subchondral bone. We believe our comprehensive microarray results can improve the understanding of the pathogenesis of osteoarthritis and could further contribute to the development of new biomarker and therapeutic strategies in osteoarthritis. Following histological assessment of the integrity of overlying cartilage and the severity of bone abnormality by microcomputed tomography, we isolated total RNA from regions of interest from human OA (n=20) and non-OA (n=5) knee lateral and medial tibial plateaus (LT and MT). A whole-genome profiling study was performed on an Agilent microarray platform and analyzed using Agilent GeneSpring GX11.5. Confirmatory quantitative reverse-transcription polymerase chain reaction (qRT-PCR) analysis was performed on samples from nine OA individuals to confirm differential expression of 85 genes identified by microarray. Ingenuity Pathway Analysis (IPA) was used to investigate canonical pathways and immunohistochemical staining was performed to validate protein expression levels in samples.
Project description:This data set consists of tissue-specific RNA-seq reads from 14 different tissues from a single female adult olive baboon (Papio anubis): bone marrow, brain cerebellum, brain frontal cortex, brain pituitary, brain temporal lobe, colon, heart, kidney, liver, lymph node, spleen, lung, skeletal muscle and thymus. The data set was generated by the non-human primate reference transcriptome resource (NHPRTR) project (http://nhprtr.org/), and was first made public on 14 Jan 2014.
Project description:The aim of this study was to identify DNA methylation patterns in femur trabecular bone and cartilage of age-matched female baboons, five with and five without knee osteoarthritis. The Illumina Infinium Human Methylation450 BeadChip was used to assess these genome-wide methylation patterns.
