DDX5 inhibits hyaline cartilage fibrosis and degradation in osteoarthritis via alternative splicing and G-quadruplex unwinding
Ontology highlight
ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE226983 | GEO | 2024/02/05
REPOSITORIES: GEO
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Project description:Autologous chondrocyte transplantation (ACT) is a routine technique to regenerate focal cartilage lesions. However, patients with osteoarthritis (OA) are lacking an appropriate long-lasting treatment alternative, partly since it is not known if chondrocytes from OA patients have the same chondrogenic differentiation potential as chondrocytes from donors not affected by OA. Articular chondrocytes from patients with OA undergoing total knee replacement (Mankin Score >3, Ahlbäck Score >2) and from patients undergoing ACT, here referred to as normal donors (ND), were isolated applying protocols used for ACT. Their chondrogenic differentiation potential was evaluated both in high-density pellet and scaffold (Hyaff-11) cultures by histological proteoglycan assessment (Bern Score) and immunohistochemistry for collagen types I and II. Chondrocytes cultured in monolayer and scaffolds were subjected to gene expression profiling using genome-wide oligonucleotide microarrays. Expression data were verified by using quantitative RT-PCR. Chondrocytes from ND and OA donors demonstrated accumulation of comparable amounts of cartilage matrix components, including sulphated proteoglycans and collagen types I and II. The mRNA expression of cartilage markers (COL2A1, COMP, aggrecan, CRTL1, SOX9) and genes involved in matrix synthesis (biglycan, COL9A2, COL11A1, TIMP4, CILP2) was highly induced in 3D cultures of chondrocytes from both donor groups. Genes associated with hypertrophic or OA cartilage (COL10A1, RUNX2, periostin, ALP, PTHR1, MMP13, COL1A1, COL3A1) were not significantly regulated between the two groups of donors. The expression of 661 genes, including COMP, FN1, and SOX9, were differentially regulated between OA and ND chondrocytes cultured in monolayer. During scaffold culture, the differences diminished between the OA and ND chondrocytes, and only 184 genes were differentially regulated. Only few genes were differentially expressed between OA and ND chondrocytes in Hyaff-11 culture. The risk of differentiation into hypertrophic cartilage does not seem to be increased for OA chondrocytes. Our findings suggest that the chondrogenic capacity is not significantly affected by OA and OA chondrocytes fulfill the requirements for matrix-associated ACT. Experiment Overall Design: Gene expression profiles of monolayer cultures (ML; passage 2) and Hyaff-11 scaffold cultures (3D; 14 days in vitro) of chondrocytes from 3 normal donors (ND; underwent ACT treatment) and 3 donors suffering from Osteoarthritis (OA; underwent knee replacement surgery) were determined. Comparative analyses between 3D and ML cultures (3D vs. ML) were performed to assess differentiation capacity of ND and OA chondrocytes. Furthermore, OA-related differences were determined comparing OA and ND monolayers as well as scaffold cultures (each OA vs. ND).
2009-09-13 | E-GEOD-16464 | biostudies-arrayexpress
Project description:Autologous chondrocyte transplantation (ACT) is a routine technique to regenerate focal cartilage lesions. However, patients with osteoarthritis (OA) are lacking an appropriate long-lasting treatment alternative, partly since it is not known if chondrocytes from OA patients have the same chondrogenic differentiation potential as chondrocytes from donors not affected by OA. Articular chondrocytes from patients with OA undergoing total knee replacement (Mankin Score >3, Ahlbäck Score >2) and from patients undergoing ACT, here referred to as normal donors (ND), were isolated applying protocols used for ACT. Their chondrogenic differentiation potential was evaluated both in high-density pellet and scaffold (Hyaff-11) cultures by histological proteoglycan assessment (Bern Score) and immunohistochemistry for collagen types I and II. Chondrocytes cultured in monolayer and scaffolds were subjected to gene expression profiling using genome-wide oligonucleotide microarrays. Expression data were verified by using quantitative RT-PCR. Chondrocytes from ND and OA donors demonstrated accumulation of comparable amounts of cartilage matrix components, including sulphated proteoglycans and collagen types I and II. The mRNA expression of cartilage markers (COL2A1, COMP, aggrecan, CRTL1, SOX9) and genes involved in matrix synthesis (biglycan, COL9A2, COL11A1, TIMP4, CILP2) was highly induced in 3D cultures of chondrocytes from both donor groups. Genes associated with hypertrophic or OA cartilage (COL10A1, RUNX2, periostin, ALP, PTHR1, MMP13, COL1A1, COL3A1) were not significantly regulated between the two groups of donors. The expression of 661 genes, including COMP, FN1, and SOX9, were differentially regulated between OA and ND chondrocytes cultured in monolayer. During scaffold culture, the differences diminished between the OA and ND chondrocytes, and only 184 genes were differentially regulated. Only few genes were differentially expressed between OA and ND chondrocytes in Hyaff-11 culture. The risk of differentiation into hypertrophic cartilage does not seem to be increased for OA chondrocytes. Our findings suggest that the chondrogenic capacity is not significantly affected by OA and OA chondrocytes fulfill the requirements for matrix-associated ACT. Keywords: time course, cell type comparison, tissue engineered cartilage; osteoarthritis; Hyaff-11 scaffold; human chondrocytes; gene expression profiling; regenerative medicine; differentiation potential
2009-09-02 | GSE16464 | GEO
Project description:Hyaline cartilage fibrosis is one of the important reasons for the poor prognosis of advanced osteoarthritis (OA), and is the main factor leading to joint stiffness and deformity. However, the mechanism of hyaline cartilage fibrosis remains largely unclear. Here we found that DDX5, one of the founding members of the DEAD-box RNA helicase family, was dramatically downregulated in the degenerated articular cartilage of aged mice, destabilization of the medial meniscus murine model as well as patients with OA. Our data suggest that strategies aimed at upregulation of DDX5 will be of great value for the treatment of cartilage fibrosis and damage in OA.
2024-03-13 | PXD050571 |
Project description:Changes in the mechanical homeostasis of the temporomandibular joint (TMJ) can lead to the initiation and progression of degenerative arthropathies such as osteoarthritis (OA). Cells sense and engage with their mechanical microenvironment through interactions with the extracellular matrix. In the mandibular condylar cartilage, the pericellular microenvironment is composed of type VI collagen. NG2/CSPG4 is a transmembrane proteoglycan that binds with type VI collagen, and has been implicated in the cell stress response through mechanical loading-sensitive signaling networks including ERK 1/2. The objective of this study is to define the role of NG2/CSPG4 in the initiation and progression of TMJ OA and to determine if NG2/CSPG4 engages ERK 1/2 in a mechanical loading dependent manner. In vivo, we induced TMJ OA in control and NG2/CSPG4 knockout mice using a surgical destabilization approach. In control mice, NG2/CSPG4 is depleted during the early stages of TMJ OA and NG2/CSPG4 knockout mice have more severe cartilage degeneration, elevated expression of key OA proteases, and suppression of OA matrix synthesis genes. In vitro, we characterized the transcriptome and protein from control and NG2/CSPG4 knockout cells and found significant dysregulation of the ERK 1/2 signaling axis. To characterize the mechanobiological response of NG2/CSPG4, we applied mechanical loads on cell-agarose-collagen scaffolds using a compression bioreactor and illustrate that NG2/CSPG4 knockout cells fail to mechanically activate ERK 1/2 and are associated with changes in the expression of the same key OA biomarkers measured in vivo. Together, these findings implicate NG2/CSPG4 in the mechanical homeostasis of TMJ cartilage and in the progression of degenerative arthropathies including OA.
2022-09-24 | GSE214077 | GEO
Project description:Genome wide gene expression was determined in paired samples of OA affected and preserved cartilage of the same joint using microarray analysis for 33 patients of the RAAK-study. Among the 1717 genes that were significantly different expressed between OA affected and preserved cartilage we found significant enrichment for genes involved in skeletal development (e.g. TNFRSF11B and FRZB). Also several inflammatory genes such as CD55, PTGES and TNFAIP6, previously identified in within-joint analyses as well as in analyses comparing preserved cartilage from OA affected joints versus healthy cartilage were among the top genes. A notable new gene was NGF, highly up-regulated in OA cartilage. To identify gene expression profiles associated with OA processes in articular cartilage and determine pathways responsive to the disease process gene expression profiles of paired preserved and OA affected cartilage samples of the same joint were determined.
2014-07-28 | E-GEOD-57218 | biostudies-arrayexpress
Project description:In an effort to identify novel differentially-expressed genes in OA, we performed RNA-seq analysis using cartilage isolated from nonarthritic and OA patients. Total RNA was isolated from 3 samples of nonarthritic cartilage and 4 samples of OA cartilage (Kellgren-Lawrence Grade 3 or 4). Genes (900 total, 600 up-regulated, 300 down-regulated) were differentially expressed in OA vs. normal (fold change > 2, FDR < 0.00001, adjusted p < 0.05). Gene set enrichment analysis (GSEA) indicated altered gene expression pattern in OA cartilage compared with nonarthritic cartilage. Specifically, pathways known to be implicated in OA pathogenesis, including inflammatory response, interferon alpha and gamma response, apoptosis, and oxidative phosphorylation, were up-regulated in OA cartilage compared with nonarthritic cartilage.
2022-03-10 | GSE168505 | GEO
Project description:Osteoarthritis (OA) is a degenerative joint disease with a substantial health economic burden. There is no current treatment; instead, disease management targets the main symptoms (pain and stiffness) and culminates in joint replacement surgery. OA is a disease of cartilage degeneration, but the molecular changes leading to the development of OA are still poorly understood. In this study we compare methylation, gene transcription and protein abundance at the genome-wide level in individually-matched samples of chondrocytes extracted from affected and relatively healthy articular cartilage across 12 OA patients undergoing total knee replacement. Integration analysis highlights genes that are consistently affected at multiple levels, including AQP1, CLEC3B and COL1A1, and also relevant biological pathways such as extracellular matrix organization, collagen catabolism and proteolysis. Collectively these results provide a first view of the comprehensive molecular landscape underpinning OA development and point to potential therapeutic avenues.
2018-10-24 | PXD002014 | Pride
Project description:Proctor2013 - Cartilage breakdown, interventions to reduce collagen release
The molecular pathways involved in cartilage breakdown is studied using this model to examine possible interventions to reduce cartilage collagen release. The model contains three separate submodels, one which describes the IL-1/JNK signalling pathway, secondly the OSM/STAT3 signalling pathway, and lastly a module which includes proMMP (Matrix matalloproteinase) activation, and aggrecan and collagen release.
This model is described in the article:
A computer simulation approach for assessing therapeutic intervention points to prevent cytokine-induced cartilage breakdown.
Proctor CJ, Macdonald C, Milner JM, Rowan AD, Cawston TE.
Arthritis Rheum. 2013 Nov 27.
Abstract:
Objective. To use a novel computational approach to examine the molecular pathways involved in cartilage breakdown and to use computer simulation to test possible interventions to reduce collagen release. Methods. We constructed a computational model of the relevant molecular pathways using the Systems Biology Markup Language (SBML), a computer-readable format of a biochemical network. The model was constructed using our experimental data showing that interleukin-1 (IL-1) and oncostatin M (OSM) act synergistically to up-regulate collagenase protein and activity and initiate cartilage collagen breakdown. Simulations were performed in the COPASI software package. Results. The model predicted that simulated inhibition of c-Jun N-terminal kinase (JNK) or p38 mitogen-activated protein kinase, and over-expression of tissue inhibitor of metalloproteinases 3 (TIMP-3) led to a reduction in collagen release. Over-expression of TIMP-1 was much less effective than TIMP-3 and led to a delay, rather than a reduction, in collagen release. Simulated interventions of receptor antagonists and inhibition of Janus kinase 1 (JAK1), the first kinase in the OSM pathway, were ineffective. So, importantly, the model predicts that it is more effective to intervene at targets which are downstream, such as the JNK pathway, rather than close to the cytokine signal. In vitro experiments confirmed the effectiveness of JNK inhibition. Conclusion. Our study shows the value of computer modelling as a tool for examining possible interventions to reduce cartilage collagen breakdown. The model predicts interventions that either prevent transcription or inhibit activity of collagenases are promising strategies and should be investigated further in an experimental setting. © 2013 American College of Rheumatology.
This model is hosted on BioModels Database
and identified
by: BIOMD0000000504
.
To cite BioModels Database, please use: BioModels Database: An enhanced, curated and annotated resource
for published quantitative kinetic models
.
To the extent possible under law, all copyright and related or
neighbouring rights to this encoded model have been dedicated to the public
domain worldwide. Please refer to CC0 Public Domain
Dedication
for more information.
2024-09-02 | BIOMD0000000504 | BioModels
Project description:Baker2017 - The role of cytokines, MMPs and
fibronectin fragments osteoarthritis
This model is described in the article:
Mathematical modelling of
cytokines, MMPs and fibronectin fragments in osteoarthritic
cartilage.
Baker M, Brook BS, Owen MR.
J Math Biol 2017 Feb; :
Abstract:
Osteoarthritis (OA) is a degenerative disease which causes
pain and stiffness in joints. OA progresses through excessive
degradation of joint cartilage, eventually leading to
significant joint degeneration and loss of function. Cytokines,
a group of cell signalling proteins, present in raised
concentrations in OA joints, can be classified into
pro-inflammatory and anti-inflammatory groups. They mediate
cartilage degradation through several mechanisms, primarily the
up-regulation of matrix metalloproteinases (MMPs), a group of
collagen-degrading enzymes. In this paper we show that the
interactions of cytokines within cartilage have a crucial role
to play in OA progression and treatment. We develop a
four-variable ordinary differential equation model for the
interactions between pro- and anti-inflammatory cytokines, MMPs
and fibronectin fragments (Fn-fs), a by-product of cartilage
degradation and up-regulator of cytokines. We show that the
model has four classes of dynamic behaviour: homoeostasis,
bistable inflammation, tristable inflammation and persistent
inflammation. We show that positive and negative feedbacks
controlling cytokine production rates can determine either a
pre-disposition to OA or initiation of OA. Further, we show
that manipulation of cytokine, MMP and Fn-fs levels can be used
to treat OA, but we suggest that multiple treatment targets may
be essential to halt or slow disease progression.
This model is hosted on
BioModels Database
and identified by:
MODEL1704120000.
To cite BioModels Database, please use:
BioModels Database:
An enhanced, curated and annotated resource for published
quantitative kinetic models.
To the extent possible under law, all copyright and related or
neighbouring rights to this encoded model have been dedicated to
the public domain worldwide. Please refer to
CC0
Public Domain Dedication for more information.
2024-09-02 | BIOMD0000000928 | BioModels
Project description:Osteoarthritis (OA) is the most common joint disease and this is a major cause of joint pain and disability in the aging population. Its etiology is multifactorial (i.e., age, obesity, joint injury, genetic predisposition), and the pathophysiologic process affects the entirety of the joint (Martel-Pelletier J et al. Osteoarthritis. Nature reviews Disease primers. 2016;2:16072). Although it is not yet clear if it precedes or occurs subsequently to cartilage damage, subchondral bone sclerosis is an important feature in OA pathophysiology (Goldring SR et al. Changes in the osteochondral unit during osteoarthritis: structure, function and cartilage-bone crosstalk. Nat Rev Rheumatol. 2016;12:632-44). It is characterized by local bone resorption and the accumulation of weakly mineralized osteoid substance (Bailey AJ et al. Phenotypic expression of osteoblast collagen in osteoarthritic bone: production of type I homotrimer. Int J Biochem Cell Biol. 2002;34:176-82). Subchondral bone sclerosis is suspected to be linked to cartilage degradation, not only by modifying the mechanical stresses transmitted to the cartilage, but also by releasing biochemical factors with an activity on cartilage metabolism (Sanchez C et al. Osteoblasts from the sclerotic subchondral bone downregulate aggrecan but upregulate metalloproteinases expression by chondrocytes. This effect is mimicked by interleukin-6, -1beta and oncostatin M pre-treated non-sclerotic osteoblasts. Osteoarthritis Cartilage. 2005;13:979-87; Sanchez C et al. Subchondral bone osteoblasts induce phenotypic changes in human osteoarthritic chondrocytes. Osteoarthritis Cartilage. 2005;13:988-97; Westacott CI et al J. Alteration of cartilage metabolism by cells from osteoarthritic bone. Arthritis Rheum. 1997;40:1282-91. We have previously demonstrated that osteoblasts isolated from subchondral OA bone exhibited an altered phenotype. More precisely, we showed that osteoblasts coming from the thickening (called sclerotic, SC) of subchondral bone located just below a cartilage lesion produced higher levels of alkaline phosphatase, interleukin (IL)-6, IL-8, prostaglandinE2, vascular endothelial growth factor (VEGF), matrix metalloproteinase (MMP)-9 and transforming growth factor(TGF)-β1 and type I collagen than osteoblasts coming from the non-thickening neighboring area (called non-sclerotic area, NSC) (Sanchez C et al. Phenotypic characterization of osteoblasts from the sclerotic zones of osteoarthritic subchondral bone. Arthritis Rheum. 2008;58:442-55; Sanchez C et al. Regulation of subchondral bone osteoblast metabolism by cyclic compression. Arthritis Rheum. 2012;64:1193-203.) To compare secretome of cells living in different in vivo conditions is useful, not only to better understand the pathological mechanisms underlying changes in OA subchondral bone, but also to identify soluble biomarkers potentially reflecting these changes. Using our well-characterised human subchondral osteoblast culture model, we compared the secretome of osteoblasts coming from sclerotic and non sclerotic OA subchondral bone. This approach allowed to identify changes in secretome that contribute to explain some subchondral bone abnormalities in OA and to propose osteomodulin and fibulin-3 as potential biomarkers of OA subchondral bone remodelling.
2018-03-20 | PXD008494 | Pride