Project description:The destruction of bone and cartilage results in a loss of joint functionality, critically impairing the quality of life in arthritis patients. Synovial fibroblasts (SFs) critically contribute to the pathogenesis of rheumatoid arthritis (RA) by acquiring either a pro-inflammatory or tissue-destructive phenotype. To explore the molecular mechanisms underlying the pathogenic fibroblast phenotype in arthritis, we performed single-cell RNA sequencing (scRNA-seq) on the synovial cells which were isolated from collagen-induced arthritis (CIA) mice.
Project description:In rheumatoid arthritis (RA), inflammation and joint destruction are exacerbated by a complicated interaction among immune cells, synovial fibroblasts and bone cells. It remains to be elucidated which cell-cell interaction critically drives the pathogenesis of RA and serves as a therapeutic target for synthetic disease modifying antirheumatic drugs (DMARDs) such as janus kinase (JAK) inhibitors. we performed a scRNA-seq analysis of the synovium of collagen-induced arthritis (CIA) mice treated with JAK inhibitor, followed by a computational analysis to identify the drug target cells and signaling pathways in vivo
Project description:To determine te circular expression profile in collagen-induced arthritis (CIA) rats and normal rats, we uesed Arraystar Rat circRNA Array to examine the expression of circRNAs in CIA and normal rats' synovial tissues.
Project description:To determine te lncRNA expression profile in collagen-induced arthritis rats and normal rats, we uesed lncRNA microArray analysis form Arraystar to examine the expression of lncRNAs in CIA and normal rats' synovial tissues.
Project description:We observed resolution of inflammatory response in collagen-induced arthritis (CIA) mice. To identify molecular signatures defining resolution of the CIA, we applied microarray analysis for synovial tissues in the CIA mice in 6 (induction), 9 (peak) and 15 weeks (resolution) after immunization. To identify genes related to CIA resolution, we performed the following comparisons of gene expression profiles: peak versus induction phase and resolution versus peak phase. We identified that three genes, Itgb1, Ywhaz and Rps3, are the key regulators for the resolution by measuring degree, betweenness and closeness centrality in reconstructed network based on protein-protein interaction data. To confirm this result, we compared the gene and protein expression level of the three regulators between the two phases of inflammation. Furthermore, we showed that the gene and protein expression level of the three regulators are up-regulated in regulatory T cells and type 2 macrophages than other subtypes of CD4+ T cells and macrophages, and also we examined that recombinant peritoneal macrophages of the three regulators can modulate the expression of pro-inflammatory and anti-inflammatory cytokines. Thus, our findings suggest that those regulators can be employed as therapeutic uses for resolving inflammation
Project description:Rheumatoid arthritis (RA) is a complex and clinically heterogeneous autoimmune disease. Microarray analysis of 83 synovial samples provides insight into the expression-level differences between patients at the site of disease activity. Synovial samples from Rheumatoid Arthritis patients were obtained during joint resection and profiled using microarrays.
Project description:The aim of the project is to analyze the plasma proteomic profile of an animal model of arthritis (Collagen Induced Arthritis; CIA) in response to different treatments. For this, plasma samples from mice under five different treatments were analyzed (N=6 per group): Vehicle, CIA, CIA + Δ9-THCA-A (20 mg / kg), CIA + Δ9-THCA-A (20 mg / kg) + T0070907 (5 mg / kg) and CIA + Δ9-THCA-A (20 mg / kg) + SR141716A (5 mg / kg).