Project description:The experiment was designed to test how autocrine TNF-alpha impacts human CD4+ T cell activation. Naïve CD4+ T cells from healthy human blood donors were either left unactivated or activated with anti-CD3/anti-CD28 in presence of an isotype control antibody or anti-TNF-alpha antibody. RNA was extracter at 48 hours. Analysis revealed that anti-TNF-alpha treatment prevented upregulation of activation-induced T cell metabolic, signaling and effector molecules.
Project description:We performed an RNA-seq analysis on FACS-sorted CD4+ memory T cells (Tmem, CD4+CD25-CD45RA-) stimulated in vitro with anti-CD3/CD28 coated beads (1:5), IL-2 (100 U/mL) in the presence of a TNF-alpha inhibitor (Etanercept, ETN, 5 μg/mL) or recombinant human TNF-alpha (rhTNF-alpha, 50 ng/mL) treatment. The cells were cultured for three days at 37°C and 5% CO2. On day three Tmem were lysed (Buffer RLT supplemented with DTT, QIAGEN) and RNA extraction was performed (RNeasy Plus Micro kit), followed by sample preparation with TruSeq (polyA) mRNA kits (Illumina), RNA sequencing (carried out by an Illumina HiSeq2500), and the alignment of trimmed fastQ files to GRCh38 human reference genome. We also performed a Quality control (QC). This was done using the tool FastQC FastQC/0.11.3-Java-1.7.0_80. QC metrics were calculated for the aligned reads using Picard-tools picard/1.130-Java-1.7.0_80, CollectRnaSeqMetrics, MarkDuplicates, CollectInsertSize-Metrics and SAMtools/1.2-foss-2015b flagstat. Finally, we carried out a Differential expression gene (DEG) analysis using DESeq2, in order to evaluate the impact of ETN and rhTNF-alpha on Transcriptome profiling of stimulated CD4+ Tmem. Principal Component Analysis (PCA) was carried out to visualise the samples given their entire transcriptome and any remaining batch effects.
Project description:Drug serum concentrations will be measured at several time-points for inflammatory disease patients treated with anti-TNF agents. The purpose is to determine which patients that will clinically benefit from either discontinue treatment, adjusting the dose, switch to another anti-TNF agent or a different class of medication.
Project description:CD4+ T-cells are key players in the pathogenesis of rheumatoid arthritis (RA) through potent production of inflammatory mediators including IL-17A, IFNg and TNF. Anti-TNF therapy has revolutionized the treatment of RA and we previously demonstrated that in vitro treatment of human CD4+ T-cells with the anti-TNF monoclonal antibody adalimumab (ADA) promotes anti-inflammatory IL-10 expression in multiple subpopulations of CD4+ T-cells. Here we investigated the transcriptional mechanisms underlying the IL-10 induction by TNF-blockade in in vitro stimulated CD4+ T-cells. CD4+ T-cells were isolated from PBMC of healthy volunteers by magnetic isolation and cultured for 3 days with anti-CD3/CD28 mAb in the absence or presence of anti-TNF. After culture, CD45RA+ cells were depleted and RNA was extracted for gene expression profiling by RNA-seq and cell nuclei were isolated for chromatin accessibility analysis by ATAC-seq. Gene expression analysis of memory CD4+ T-cells showed a distinct gene signature of 183 genes (q-value <0.05) conferred by anti-TNF treatment. Pathway enrichment analysis of the differentially expressed genes revealed multiple pathways related to cytokine signalling and regulation of cytokine production; in particular, IL10 was the most upregulated gene by anti-TNF, while the proinflammatory cytokines and chemokines IFNG, IL9, IL22 and CXCL10 were significantly downregulated (q-value <0.05). Transcription factor (TF) motif analysis at the differentially open chromatin regions after anti-TNF treatment revealed 58 TF motifs, shared by all donors, enriched at the IL10 locus. We identified 7 TF candidates for the anti-TNF mediated regulation of IL-10, which were either differentially expressed or whose locus was differentially accessible upon anti-TNF stimulation. We postulate that this TF network, which includes MAF and PRMD1, drives transcriptional regulation of IL-10 in anti-TNF treated T-cells.
Project description:Human CD4+ T cells and CD14+ monocytes from healthy donors were co-cultured with anti-CD3 for three days in the presence or absence of TNF-alpha mAb (Adalimumab). Classical Th1 cells or those generated in the presence of the inhibitor were then sorted and analyzed by full transcriptome microarray analysis.
Project description:Human CD4+ T cells and CD14+ monocytes from healthy donors were co-cultured with anti-CD3 for three days in the presence or absence of TNF-alpha mAb (Adalimumab). Classical Th17 cells (Th17) or those generated in the presence of the inhibitor (iTh17) were then sorted and analyzed by full transcriptome microarray analysis.
Project description:Crohn's Disease (CD) is a chronic inflammatory disease of the intestinal tract. We performed a whole-genome transcriptional analysis using colonic biopsies from CD patients before and after anti-TNF-α therapy. Involved colonic samples from Crohn's disease patients and healthy colonic samples from non-inflammatory controls were collected for RNA extraction and hybridization on Affymetrix microarrays. Inclusion criteria for CD patients were: age between 18 and 70, diagnosis of CD established at least 4 months before inclusion and exclusion of concomitant infection. Active disease was defined by endoscopic and clinical score: endoscopic active disease was defined as a CD endoscopic index of severity (CDEIS) of 5 or more and the presence of large ulcers (> 0.5 cm diameter) in at least one of the explored segments. Clinical activity was defined as a CD activity index (CDAI) above 150. Finally, a total of 39 biopsies were analyzed: 17 healthy controls, 10 active CD without anti-TNF therapy, 5 active CD with anti-TNF therapy (non-responders) and 7 inactive CD with anti-TNF therapy (responders).
Project description:Human CD4+ T cells and CD14+ monocytes from healthy donors were co-cultured with anti-CD3 for three days in the presence or absence of TNF-alpha mAb (Adalimumab). Classical Th17 cells (Th17) or those generated in the presence of the inhibitor (iTh17) were then sorted and analyzed by full transcriptome microarray analysis. A total of 18 samples consisting of paired samples from 9 healthy volunteers were compared. Sorted Th17 cells from co-cultures containing either Adalimumab (1 microgram/ml) or not were obtained from each of the donors, and compared by full transcriptome profiling.
Project description:Crohn's Disease (CD) is a chronic inflammatory disease of the intestinal tract. We performed a whole-genome transcriptional analysis using colonic biopsies from CD patients before and after anti-TNF-α therapy.