Project description:We screened the differential expressed microRNA from the rheumatoid arthritis patients and healthy person in their hydrops articuli CD4+ T cells. We screened the differential expressed microRNA from the rheumatoid arthritis patients and healthy person in their hydrops articuli CD4+ T cells. 1.Isolated the CD4+ T cells from the hydrops articuli cells of 2 rheumatoid arthritis patients. 2.Isolated the CD4+ T cells from healthy person's peripheral blood as control. 3.Isolation of total RNA from CD4+ T cells then sent the samples to KangChen Bio-tech Inc (Shanghai, China) where they were labeled, hybridized, scaned, normalied and transformed to the final data.
Project description:Rheumatoid arthritis (RA) is a systemic autoimmune disease characterized by chronic destructive arthritis. Although helper T cells are involved in the pathogenesis of RA, the characteristics of synovium-infiltrating CD4+ T cells are still largely unknown. In this study, we investigated synovium-infiltrating helper T cells of rheumatoid arthritis patients
Project description:Leukocytapheresis((LCAP) is a safe, unique therapy prevalent for intractable rheumatoid arthritis even in case of drug allergy or infectious state. To investigate how to improve LCAP efficacy, we have conducted genes expressions analysis from peripheral blood of Rheumatoid arthritis patients using high resolution DNA microarray just before and after LCAP procedure. 8 Rheurmatoid arthritis patients have been compared just before and after Leukocytapheresis treatment (overall 16 samples). The Pre-LCAP samples were labeled using Cy5, and the Post-LCAP labeled with Cy3.
Project description:Exosomes were isolated from CD4+T cell by ExoQuickTC kit in rheumatoid arthritis patients and controls. Proteomic analysis of CD4+ T-cell-derived exosomes was performed by TMT combined with LC‒MS/MS.
Project description:The development of T cells has been characterized as taking place over three stages: naïve (Tn), central memory (Tcm), and effector memory (Tem) cells. Recently, stem cell memory T cells (Tscm) were found to be the least-developed memory subset. We performed detailed analysis of the gene expression of human CD4+ T cells from patients with rheumatoid arthritis with clear distinction of the Tn, Tscm, Tcm, and Tem stages.
Project description:Leukocytapheresis((LCAP) is a safe, unique therapy prevalent for intractable rheumatoid arthritis even in case of drug allergy or infectious state. To investigate how to improve LCAP efficacy, we have conducted genes expressions analysis from peripheral blood of Rheumatoid arthritis patients using high resolution DNA microarray just before and after LCAP procedure.
Project description:We screened the differential expressed microRNA from the rheumatoid arthritis patients and healthy person in their hydrops articuli CD4+ T cells.
Project description:Rheumatoid arthritis (RA) is an autoimmune disease that causes chronic inflammation of the joints involved with genetic and epigenetic aberrant. Recent evidence found more and more importance of the epigenetic contribution, especially the DNA methylation, to the pathogenesis of rheumatoid arthritis. To understand the extent and nature of dysregulated DNA methylation in rheumatoid arthritis T cells, we performed a genome-wide DNA methylation study in CD4+ T cells in 12 rheumatoid arthritis patients compared to 12 matched normal healthy controls. [Methods and Result] Cytosine methylation status was quantified with Illumina methylation 450K microarray (HM450K, 485512 CpG sites). We identified 810 hypomethylated and 392 hypermethylated CG sites in RA CD4+ T cells compared to normal controls, representing 383 and 785 genes hypermethylated and hypomethylated in RA patients (P<3.4*10-7). Cluster analysis based on significantly differential methylated loci showed distinct separation between RA and normal controls. Gene ontology analysis showed alternative splicing (P=1.2*10-7, FDR) and phosphoprotein (1.7*10-2, FDR) were significantly aberrant in RA patients, indicating the abnormal of transcript alternative splicing and protein modification mediated by DNA methylation might play important role in the pathogenesis of rheumatoid arthritis. What’s more, the result showed human leukocyte antigen (HLA) region was frequently hypomethylated in RA patients, including HLA-DRB6, HLA-DQA1 and HLA-E, however, HLA-DQB1 showed different methylation profiles with significant hypermethylation in CpG island region and hypomethylation in CpG shelf region. Outsite of the MHC region, the most hypermethylated genes in RA included HDAC4, NXN, TBCD and TMEM61 while the most significant hypomethylated genes included ITIH3, TCN2, PRDM16, SLC1A5 and GALNT9. [Conclusion] Genome-wide DNA methylation patterns revealed significant DNA methylation change in CD4+ T cells from patients with rheumatoid arthritis. 12 rheumatoid arthritis and 12 matched health individuals
