Subchondral bone proteomics in osteoarthritis: Current status and perspectives

Area of Science:

• Biochemistry
• Orthopedics
• Proteomics

Background:

• Osteoarthritis (OA) is a prevalent degenerative joint disorder.
• Current treatments lack options to halt established articular cartilage degeneration.
• OA pathogenesis involves complex biochemical pathways and tissue crosstalk, particularly between bone and cartilage.

Purpose of the Study:

• To explore the role of proteomics in understanding osteoarthritis.
• To identify potential diagnostic biomarkers and therapeutic targets for OA by analyzing factors governing bone-cartilage interplay.
• To highlight the limited information on subchondral bone protein profiles in OA pathophysiology.

Main Methods:

• Utilizing advanced proteomics technology to build a library of factors involved in OA.
• Analyzing protein profiles from blood serum, synovial fluid, and articular cartilage of OA patients.
• Discussing technical challenges in bone tissue proteomics and proposing cellular proteomics and secretomics for further insights.

Main Results:

• Proteomic studies have identified inflammatory cytokines, proteases, and matrix cleavages in OA patients.
• There is a significant lack of data regarding protein profiles in subchondral bone disturbances in OA.
• Advanced proteomics offers a powerful approach to investigate OA-related factors.

Conclusions:

• Proteomics is crucial for unraveling the complex biochemical networks in osteoarthritis.
• Identifying factors in bone-cartilage interactions can lead to novel diagnostic biomarkers and therapeutic strategies for OA.
• Further research using cellular proteomics and secretomics is needed to fully understand OA pathophysiology, especially concerning subchondral bone.