Mechanism of Jingu Zhitong Gel in treatment of knee osteoarthritis based on IL-17 signaling pathway
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PROVIDER: PRJNA1079721 | ENA |
REPOSITORIES: ENA
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Project description:In this study, transcriptome sequencing was used to study the mechanism of Jingu Zhitong gel in the treatment of osteoarthritis. We identified the key pathways and key genes for the treatment of KOA by transcriptome sequencing of rat synovial tissue, and completed qPCR validation. The results showed that IL-17 was a targeted pathway in the pathogenesis of osteoarthritis. MMP13, MMP3, cxcl6, CCL17, S100A8, S100A9, Lcn2 and FosB can induce the upregulation of IL-17 signaling pathway, thereby reducing synovial inflammation. This study provides a new idea for the molecular mechanism of Jingu Zhitong gel in the treatment of KOA.
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Project description:The evolution of human bipedalism exposed the knee to unique biomechanical challenges, requiring changes in knee anatomy giving rise to the modern-day configuration. In order to better understand the relationship between derived knee morphology and the genetic factors associated with osteoarthritis risk, we performed epigenetic profiling of murine forelimb/hindlimb growth plates to identify regulatory elements shaping formation of specific knee structures, identifying signals of ancient positive selection upon which more recent genetic drift overlaps risk-associated loci. Our functional analyses of an osteoarthritis-risk variant within a reproducibly-associated locus establishes a novel model for studying this degenerative disease.
2020-04-16 | GSE122877 | GEO
Project description:Genetic Components of Knee Osteoarthritis (GeCKO) Study: The Osteoarthritis Initiative
| PRJNA289575 | ENA
Project description:Cartilage destruction in osteoarthritis (OA) results from disturbed chondrocyte metabolism. Here, we used microarrays to show that TGF alpha and CCL2 are simultaneously upregulated in a rat model of OA and cooperate to drive cartilage degradation. The goals of the experiments included here were to a) characterize gene expression in knee joint articular chondrocytes at various stages of development of OA (2 and 8 weeks after surgical induction of OA), and b) to establish trends in gene expression among groups of genes related to the TGF alpha-EGFR axis, over time, in OA. The model chosen to study these results has been previously validated (Appleton, CT et al, 2007, Arthritis Rheum) and used to describe similar gene expression results at a different time point (4 weeks) after induction of OA. The rat model of OA involves surgical destabilization of the knee joint, followed by forced low-intensity mobilization over several weeks; a sham surgery is used as the control (representing a healthy non-OA knee joint) wherein a surgical incision is made but not structural (i.e. ligamentous) modification is made to the joint. Altogether, our data indicate that TGF and CCL2 cooperate to drive cartilage degradation in osteoarthritis. A total of 12 samples were analyzed. 3 replicates were used per condition: OA surgery at 2 weeks, OA surgery at 8 weeks, Sham (control) surgery at 2 weeks and Sham surgery at 8 weeks. Expression of OA samples was assessed relaitve to Sham (control) expression levels.
2012-11-15 | E-GEOD-42295 | biostudies-arrayexpress
Project description:Objectives : Joint pain causes a significant morbidity in osteoarthritis (OA). The synovium as an innervated joint structure might contribute to the peripheral pain in OA. Methods : We used a hypothesis-free next generation RNA sequencing to study protein coding and small non-coding transcriptomes in knee synovial tissues of OA patients (n=10) with high and low knee pain (evaluated by visual analogue scale) followed by Gene Ontology (GO) and pathway analyses and integration of mRNAs and small RNAs data sets. Results : We showed that 33 protein-coding genes and 35 small RNAs were differentially expressed in the knee synovium of patients with high compared to low intensity knee pain, with 30 mRNAs and 14 small RNAs being upregulated and 2 mRNAs and 21 small RNAs being downregulated. Top enriched genes, such as SDIM1 and CPE encode neuronal proteins that share molecular properties with neurotrophic factor BDNF and promote neuronal survival under cellular stress, and OTOF participates in calcium-dependent synaptic exocytosis and modulation of GABAergic activity. TrkB was enriched in several gene networks, suggesting its key role in pain-related transcriptional changes in OA joint. Downregulation of PTX3 in high pain group supports an argument that inflammation and pain are independent processes in symptomatic knee OA. MiR-146a-3p and miR150 appeared as the microRNA candidates in the pathogenesis of OA-related knee pain. Conclusions : Here we uncovered the molecular complexity of pain-related transcriptome changes in the synovium of knee joints in osteoarthritis. We identified new molecular candidates in OA pain setting a firm ground for future mechanistic studies and drug discovery in OA.
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Project description:This metabolomics pilot and feasibility (P & F) study was conducted to provide data to be used to gain a better understanding of metabolic alterations in people with knee osteoarthritis (OA) and to discover novel biomarkers of the disease. The goal of the metabolomics study was to determine if metabolic differences, detected by a comprehensive metabolomics analysis, can be used to distinguish people who will develop symptomatic knee OA from those who will not. For this metabolomics study, individuals participating in T1 or T1* with 5-year follow-up at T2 were selected. At T2 subjects were on average 68.1(9.12) years old with an average BMI of 31.4(7.01) with 32% men and one-third African American. All had weight-bearing posterior-anterior knee films obtained with the Synaflexer positioning device at both time points and read paired for Kellgren-Lawrence grade and minimum joint space. Urine samples (second morning void) collected from 36 overweight or obese participants in the JoCo at T1 or T1* were selected from two subgroups (a group that developed radiographic osteoarthritis (n=16) and an age, race, sex, and BMI matched group that did not develop osteoarthritis (n=20). Radiographic knee OA was defined as Kellgren-Lawrence grade 2-4 at T2 in a person with Kellgren-Lawrence grade 0 or 1 at T1 or T1*.
2014-03-04 | ST000022 | MetabolomicsWorkbench