Related Experiment Video
Updated: Apr 24, 2026
Destabilization of the Medial Meniscus and Cartilage Scratch Murine Model of Accelerated Osteoarthritis
Published on: July 6, 2022
Screening for characteristic genes in osteoarthritis induced by destabilization of the medial meniscus utilizing
1Department of Arthroscopic Surgery, Shanghai Sixth People's Hospital, Shanghai Jiaotong University, Shanghai 200233, China.
Objective:
To explore the underlying molecular mechanism of the development of OA (osteoarthritis).
Methods:
The expression profile dataset GSE26475 was downloaded from Gene Expression Omnibus database. A total of 21 samples were available, including knee joint samples from OA mice induced by DMM (Destabilization of the medial meniscus) surgery (6h, 3d, 7d), mice undergoing sham (only capsulotomy) surgery (6h, 3d, 7d) and the age matched Naïve mice (normal controls) that were not operated on. The differentially expressed genes (DEGs) were identified and the KEGG pathway enrichment analysis was conducted for all DEGs.
Results:
The number of DEGs between the DMM-induced mice at different times after surgery and normal controls was different that it decreased from 6h to 3d while increased at 7d. The same was true for the change of the number of DEGs between DMM and sham groups. Further analysis revealed that the DEGs between DMM and normal controls were mainly involved in the signaling and inflammation related pathways. Total 16 DEGs between DMM and sham groups at 7d were all involved in the Parkinson's disease, Oxidative phosphorylation and Alzheimer's disease pathways.
Conclusion:
The results presented here may help us to understand the molecular mechanism of OA.
Insights
This study investigated the molecular mechanisms of osteoarthritis (OA) development using gene expression data from mice. Key findings reveal significant changes in signaling and inflammation pathways, offering insights into OA pathogenesis.
Area of Science:
- Molecular Biology
- Genomics
- Biochemistry
Background:
- Osteoarthritis (OA) is a degenerative joint disease with complex molecular underpinnings.
- Understanding the early molecular events in OA development is crucial for therapeutic interventions.
Purpose of the Study:
- To elucidate the molecular mechanisms driving osteoarthritis (OA) development.
- To identify key genes and pathways involved in OA pathogenesis.
Main Methods:
- Analysis of gene expression profiles (GSE26475) from mouse knee joints.
- Utilized Destabilization of the medial meniscus (DMM) surgery model to induce OA.
- Identified differentially expressed genes (DEGs) and performed KEGG pathway enrichment analysis.
Main Results:
- Gene expression changes varied over time post-DMM surgery compared to sham and naive controls.
- DEGs between OA and control groups were primarily associated with signaling and inflammation pathways.
- At 7 days post-surgery, DEGs between DMM and sham groups were linked to Parkinson's disease, oxidative phosphorylation, and Alzheimer's disease pathways.
Conclusions:
- The identified DEGs and enriched pathways provide novel insights into the molecular mechanisms of OA.
- These findings may contribute to a better understanding of OA development and potential therapeutic targets.
