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Published on: March 18, 2022
Epigenetics as a Therapeutic Target in Osteoarthritis
Carmen Núñez-Carro1, Margarita Blanco-Blanco1, Karla Mariuxi Villagrán-Andrade1
1Unidad de Epigenética, Grupo de Investigación en Reumatología (GIR), Instituto de Investigación Biomédica de A Coruña (INIBIC), Complexo Hospitalario Universitario, de A Coruña (CHUAC), Sergas, 15006 A Coruña, Spain.
Abstract:
Osteoarthritis (OA) is a heterogenous, complex disease affecting the integrity of diarthrodial joints that, despite its high prevalence worldwide, lacks effective treatment. In recent years it has been discovered that epigenetics may play an important role in OA. Our objective is to review the current knowledge of the three classical epigenetic mechanisms-DNA methylation, histone post-translational modifications (PTMs), and non-coding RNA (ncRNA) modifications, including microRNAs (miRNAs), circular RNAs (circRNAs), and long non-coding RNAs (lncRNAs)-in relation to the pathogenesis of OA and focusing on articular cartilage. The search for updated literature was carried out in the PubMed database. Evidence shows that dysregulation of numerous essential cartilage molecules is caused by aberrant epigenetic regulatory mechanisms, and it contributes to the development and progression of OA. This offers the opportunity to consider new candidates as therapeutic targets with the potential to attenuate OA or to be used as novel biomarkers of the disease.
Insights
Epigenetics, including DNA methylation and RNA modifications, significantly impacts osteoarthritis (OA) development. Understanding these epigenetic changes offers new therapeutic targets and biomarkers for this prevalent joint disease.
Area of Science:
- Molecular Biology
- Genetics
- Rheumatology
Background:
- Osteoarthritis (OA) is a widespread joint disease with no effective treatments.
- Epigenetic mechanisms are increasingly recognized for their role in OA pathogenesis.
- Articular cartilage is a key focus for understanding OA's molecular underpinnings.
Purpose of the Study:
- To review current knowledge on epigenetic mechanisms in osteoarthritis.
- To focus on DNA methylation, histone modifications, and non-coding RNAs in articular cartilage.
- To identify potential therapeutic targets and biomarkers for OA.
Main Methods:
- Literature search conducted in the PubMed database.
- Review of studies on epigenetic regulation in OA pathogenesis.
- Focus on DNA methylation, histone PTMs, and various ncRNAs (miRNAs, circRNAs, lncRNAs).
Main Results:
- Aberrant epigenetic mechanisms dysregulate essential cartilage molecules in OA.
- These epigenetic dysregulations contribute to OA development and progression.
- Specific epigenetic alterations are linked to the pathology of articular cartilage.
Conclusions:
- Epigenetic dysregulation is a key factor in osteoarthritis.
- Targeting epigenetic mechanisms presents novel therapeutic strategies for OA.
- Epigenetic modifications can serve as valuable biomarkers for OA detection and monitoring.
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