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Published on: October 28, 2022
MicroRNA Profiling in Cartilage Ageing
Panagiotis Balaskas1, Katarzyna Goljanek-Whysall1, Peter Clegg1
1Institute of Ageing and Chronic Disease, William Henry Duncan Building, 6 West Derby Street, Liverpool L7 8TX, UK.
Abstract:
Osteoarthritis (OA) is the most common age-related joint disorder in man. MicroRNAs (miRNA), a class of small noncoding RNAs, are potential therapeutic targets for regulating molecular mechanisms in both disease and ageing. Whilst there is an increasing amount of research on the roles of miRNAs in ageing, there has been scant research on age-related changes in miRNA in a cartilage. We undertook a microarray study on young and old human cartilages. Findings were validated in an independent cohort. Contrasts between these samples identified twenty differentially expressed miRNAs in a cartilage from old donors, derived from an OA environment which clustered based on OA severity. We identified a number of recognised and novel miRNAs changing in cartilage ageing and OA including miR-126: a potential new candidate with a role in OA pathogenesis. These analyses represent important candidates that have the potential as cartilage ageing and OA biomarkers and therapeutic targets.
Insights
MicroRNAs (miRNAs) are key regulators in aging and disease. This study identified specific miRNAs, including miR-126, that change with cartilage aging and osteoarthritis, offering potential biomarkers and therapeutic targets.
Area of Science:
- Molecular Biology
- Gerontology
- Rheumatology
Background:
- Osteoarthritis (OA) is a prevalent age-related joint disorder.
- MicroRNAs (miRNAs) are small noncoding RNAs involved in cellular regulation, disease, and aging.
- Limited research exists on age-related miRNA changes specifically within cartilage.
Purpose of the Study:
- To investigate age-related changes in miRNA expression in human cartilage.
- To identify potential miRNA biomarkers and therapeutic targets for osteoarthritis and cartilage aging.
Main Methods:
- Microarray analysis of young versus old human cartilage samples.
- Validation of findings in an independent cohort.
- Clustering of differentially expressed miRNAs based on OA severity.
Main Results:
- Twenty differentially expressed miRNAs were identified in older human cartilage from an OA environment.
- Recognized and novel miRNAs associated with cartilage aging and OA were discovered.
- miR-126 was identified as a potential new candidate involved in OA pathogenesis.
Conclusions:
- Age-related changes in cartilage miRNA expression are significant in osteoarthritis.
- Identified miRNAs, including miR-126, show potential as biomarkers for cartilage aging and OA.
- These miRNAs represent promising therapeutic targets for managing osteoarthritis and cartilage aging.
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