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Osteoarthritic chondrocytes undergo a glycolysis-related metabolic switch upon exposure to IL-1β or TNF-α

ABSTRACT: Osteoarthritic chondrocytes undergo a glycolysis-related metabolic switch upon exposure to IL-1β or TNF-α

PROVIDER: PRJNA888116 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR21839216.fastq.gz	Fastqsanger.gz
	SRR21839217.fastq.gz	Fastqsanger.gz
	SRR21839218.fastq.gz	Fastqsanger.gz
	SRR21839219.fastq.gz	Fastqsanger.gz
	SRR21839220.fastq.gz	Fastqsanger.gz

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Osteoarthritic chondrocytes undergo a glycolysis-related metabolic switch upon exposure to IL-1β or TNF-α

Project description:Inflammation, which is mainly sustained by pro-inflammatory cytokines such as IL-1β, TNF-α, and IL-6, plays an important role in osteoarthritis progression. However, the therapeutic failures of recent clinical trials evaluating anti-IL-1, anti-TNF, and anti-IL-6 drugs highlight the lack of overall understanding of the effects of these cytokines on chondrocytes. Here, we generated a comprehensive transcriptomic and proteomic dataset of osteoarthritic chondrocytes treated with these cytokines to describe their pro-inflammatory signature and compare it to the transcriptome of non-osteoarthritic chondrocytes. We first identified specific dysregulation of metabolic-related genes in OA chondrocytes. A metabolic shift, toward increased glycolysis at the expense of mitochondrial respiration, was specifically identified and confirmed by Seahorse® assay of osteoarthritic chondrocytes treated with IL-1β or TNF-α. These data show a strong association between inflammation and metabolism, indicating that understanding metabolic dysregulations should be a focus of future investigations for the design of therapies for osteoarthritis.

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whole transcriptome map of osteoarthritic meniscus with or without interleukin-1β stimulation

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Project description:We used chondrocytes exposed to osteoarthritic synovial fluid as a chronic disease model to study the effects of a chronic disease microenvironment on 2’-O-me rRNA heterogeneity. Human non-OA human articular chondrocytes (5 individual donors) were cultured either in the presence of OA-SF (20% (v/v), pool of 14 donors) or in a normal culture medium and were refreshed every other day. After 14 days of culture, RNA was isolated for 2’-O-methylation profiling of ribosomal RNAs.

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Project description:Human osteoarthritic (OA) chondrocytes were obtained from the cartilage of femoral condyles and tibial plateaus from three patients undergoing total knee arthroplasty. The chondrocytes were released from the cartilage, seeded at high density, and cultured in Dulbecco’s modified Eagle’s medium supplemented with 10% heat-inactivated fetal bovine serum and an antibiotic mixture (100 units/ml penicillin base and 100 μg/ml streptomycin base) at 37°C in a humidified atmosphere of 5% CO2/95% air. The chondrocytes from each of the three donors were left untreated (control) and treated with thapsigargin (50nM for 20hours).Total RNA was extracted from the chondrocytes and processed for qPCR according to the manufacturer's instructions (SA Biosciences RT2 Profiler PCR Array PAHS-089Z).

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