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Re-examining osteoarthritis therapy from a developmental biologist's perspective
Akrit Pran Jaswal1, Amitabha Bandyopadhyay1
1Lab 10, Department of Biological Sciences and Bio-engineering, IIT, Kanpur, India.
Abstract:
Osteoarthritis is the most prevalent musculoskeletal disorder and one for which there is no disease modifying therapy available at present. Our current understanding of the disease mechanism of osteoarthritis is limited owing to a lacuna of knowledge about the development and maintenance of articular cartilage that is affected during osteoarthritis. All current therapeutic strategies aim at countering inflammation which though mitigates pain but does not arrest the progressive degeneration of articular cartilage. During osteoarthritis, articular cartilage expresses markers for transient cartilage differentiation. Moreover, blocking transient cartilage differentiation is sufficient for halting the progression of experimental osteoarthritis. A developmental biology inspired approach that combines restoration of tissue microenvironment, supplementation with engineered cartilage and built in mechanism to prevent transient cartilage differentiation could be an avenue for developing a disease modifying therapy for osteoarthritis.
Insights
Osteoarthritis (OA) lacks disease-modifying treatments. Blocking transient cartilage differentiation halts experimental OA progression, suggesting a new therapeutic strategy.
Area of Science:
- Biomedical Engineering
- Developmental Biology
- Orthopedics
Background:
- Osteoarthritis (OA) is a prevalent musculoskeletal disorder with no current disease-modifying therapies.
- Existing OA treatments primarily manage inflammation and pain, failing to halt progressive articular cartilage degeneration.
- Understanding articular cartilage development and maintenance is crucial for elucidating OA pathogenesis.
Purpose of the Study:
- To explore novel therapeutic strategies for osteoarthritis.
- To investigate the role of transient cartilage differentiation in OA progression.
- To propose a developmental biology-inspired approach for disease modification in OA.
Main Methods:
- Analysis of articular cartilage markers during osteoarthritis.
- Experimental models to assess the impact of blocking transient cartilage differentiation.
- Conceptualizing a multi-component therapeutic strategy.
Main Results:
- Articular cartilage exhibits markers of transient differentiation during osteoarthritis.
- Inhibition of transient cartilage differentiation effectively halted experimental OA progression.
- Current therapies do not prevent the underlying degenerative process.
Conclusions:
- Transient cartilage differentiation is a key factor in osteoarthritis progression.
- Blocking this differentiation presents a promising avenue for disease modification in OA.
- A regenerative approach combining microenvironment restoration, engineered cartilage, and differentiation inhibition may offer a novel OA therapy.
