Subchondral bone proteomics in osteoarthritis: Current status and perspectives

Pok Man Boris Chan, Lin Zhu, Chun Yi Wen*, Kwong Yuen Chiu*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

14 Citations (Scopus)


Osteoarthritis (OA) is the most common degenerative joint disorder. OA was conceived as a "wear and tear" problem of articular cartilage, yet there is a lack of treatment options to delay or rescue articular cartilage degeneration once it is established. Actually, the degradation of articular cartilage is related to a complex network of biochemical pathways involving the diffusion of catabolic factors within and between different joint tissues and particularly bone and cartilage. Advanced proteomics technology provides a powerful tool to allow us to build up a library of such factors. Factors that govern the bone-cartilage interplay could be the candidate diagnostic biomarkers and therapeutic targets for OA. Currently, a growing body of proteomic studies has been done to unveil a number of inflammatory cytokines, proteases, and cartilaginous matrix cleavages in the blood serum, synovial fluid, and articular cartilage from OA patients. Little information is available regarding the protein profiles of disturbances at subchondral bone in the pathophysiology of OA. The technical difficulties in protein extraction from tissues particularly bone and quantitative analyses of protein profile are discussed; cellular proteomics of the defective osteoblasts and secretomics for the osteoblasts-chondrocytes crosstalk are proposed to supplement the information obtained from the bone tissue proteomics.

Original languageEnglish
Pages (from-to)71-77
Number of pages7
JournalJournal of Orthopaedic Translation
Issue number2
Early online date11 Mar 2015
Publication statusPublished - 1 Apr 2015

Scopus Subject Areas

  • Orthopedics and Sports Medicine

User-Defined Keywords

  • Articular cartilage
  • Osteoarthritis
  • Proteomics
  • Subchondral bone


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