Proteomic analysis of osteoarthritic chondrocyte reveals the hyaluronic acid-regulated proteins involved in chondroprotective effect under oxidative stress

Chia Jung Yu, Chun Jung Ko, Chang Hsun Hsieh, Chiang Ting Chien, Lien Hung Huang, Chien Wei Lee, Ching Chuan Jiang

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

Osteoarthritis (OA), the most common type of arthritis, is a degenerative joint disease. Oxidative stress is well known to play important roles in cartilage degradation and pathogenesis of OA. The intra-articular injection of hyaluronic acid (IAHA) is accepted as an effective clinical therapy for OA, but we do not yet fully understand the mechanisms underlying the effects of HA on OA chondrocytes under oxidative stress. Here, we show for the first time that IAHA significantly reduces the synovial fluid levels of hydrogen peroxide (H2O2) and superoxide (O2-) in patients with knee OA. We also demonstrate that HA suppresses H2O2-induced cell death in human OA chondrocytes. Proteomic approaches (2-DE combined with mass spectrometry) allowed us to identify 13 protein spots corresponding to 12 non-redundant proteins as HA-regulated proteins in OA chondrocytes under oxidative stress. The expression levels of three putative HA-regulated proteins (TALDO, ANXA1 and EF2) in control, H2O2-, HA- and HA/H2O2-treated OA chondrocytes were verified by Western blotting and the results indeed support the notion that HA acts in anti-oxidation, anti-apoptosis, and the promotion of cell survival. Our results collectively demonstrate the utility of proteomic approaches and provide new insights into the chondroprotective effects of HA on OA. Biological significance: In the present study, we show for the first time that IAHA reduces the levels of H2O2 and O2- in synovial fluids from OA patients. We used primary cultured human OA chondrocytes as a model, treated cells with H2O2 to partly mimic their physiological conditions under oxidative stress, and examined the protection effects of HA. The proteomic approach allowed us to identify candidate proteins regulated by H2O2 and/or HA in OA chondrocytes. We found that proteins functioning in stress responses, apoptosis and protein synthesis were consistently regulated by HA in chondrocytes under oxidative stress. These novel results contribute to our understanding of the molecular mechanisms underlying HA-mediated chondroprotection.

Original languageEnglish
Pages (from-to)40-53
Number of pages14
JournalJournal of Proteomics
Volume99
DOIs
Publication statusPublished - 2014 Mar 17

Fingerprint

Oxidative stress
Hyaluronic Acid
Chondrocytes
Osteoarthritis
Proteomics
Oxidative Stress
Proteins
Intra-Articular Injections
Cells
Apoptosis
Synovial Fluid
Fluids
Cartilage
Cell death
Superoxides
Hydrogen Peroxide
Mass spectrometry
Knee Osteoarthritis
Degradation
Oxidation

Keywords

  • Chondrocyte
  • Hyaluronic acid
  • Osteoarthritis
  • Oxidative stress
  • Proteomic

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry

Cite this

Proteomic analysis of osteoarthritic chondrocyte reveals the hyaluronic acid-regulated proteins involved in chondroprotective effect under oxidative stress. / Yu, Chia Jung; Ko, Chun Jung; Hsieh, Chang Hsun; Chien, Chiang Ting; Huang, Lien Hung; Lee, Chien Wei; Jiang, Ching Chuan.

In: Journal of Proteomics, Vol. 99, 17.03.2014, p. 40-53.

Research output: Contribution to journalArticle

Yu, Chia Jung ; Ko, Chun Jung ; Hsieh, Chang Hsun ; Chien, Chiang Ting ; Huang, Lien Hung ; Lee, Chien Wei ; Jiang, Ching Chuan. / Proteomic analysis of osteoarthritic chondrocyte reveals the hyaluronic acid-regulated proteins involved in chondroprotective effect under oxidative stress. In: Journal of Proteomics. 2014 ; Vol. 99. pp. 40-53.
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