Cited by 29Osteoarthritis Treatment and MechanismsProtease and Inhibitor MechanismsProteoglycans and glycosaminoglycans research

Aggrecanase- and matrix metalloproteinase-mediated aggrecan degradation is associated with different molecular characteristics of aggrecan and separated in time ex vivo

Madsen, Suzi Hoegh, Sumer, Eren Ufuk, Bay-Jensen, Anne-Christine, Sondergaard, Bodil-Cecilie, Qvist, Per, Karsdal, Morten Asser·2010·Biomarkers

Abstract

Aggrecan is one of the first proteins to be depleted from articular cartilage in early osteoarthritis. We investigated the molecular differences between matrix metalloproteinase (MMP)- and aggrecanase-mediated aggrecan degradation, as a consequence of their distinct time-dependent degradation profiles. Cartilage degradation was induced by cytokine stimulation in bovine articular cartilage explants and quantified by a dye-binding assay and immunoassays. The size of degradation fragments was analysed by Western blot. Cytokine stimulation resulted in the early release of aggrecanase-mediated aggrecan degradation fragments. In contrast, MMP-mediated aggrecan degradation began only at day 16 and continued to day 21. Western blot analysis showed that glycosylated high-molecular-weight (374)ARGSVI fragments appeared at day 7, in contrast to deglycosylated low-molecular-weight (342)FFGVG fragments which were detected at day 21. Aggrecan degradation may be divided into two different pools, a high-molecular-weight aggrecanase-mediated pool, and a low-molecular-weight MMP-mediated pool. This may have implications for the development of intervention strategies for OA.

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Crossref · 10.3109/13547500903521810

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  • Aggrecan has been previously identified as an MMP-9 target.

    “As aggrecan has been previously identified as an MMP-9 target (Mercuri et al., 2000; Madsen et al., 2010; Rankin-Gee et al., 2015), aggrecan-rich PNNs may be unstable in the presence of MMP-9, leading to abnormal development and neural excitability (Murase et al., 2017; Wen et al., 2017).”

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Authors
Madsen, S. H., Sumer, E. U., Bay-Jensen, A.-C., Sondergaard, B.-C., Qvist, P., & Karsdal, M. A.
Affiliations
Nordic Bioscience (Denmark) (DK)
Corresponding author
Madsen, Suzi Hoegh
Venue
Biomarkers
Published
2009-12-29
Volume
15
Issue
3
Pages
266-276
ISSN
  • 1354-750X (ISSN-L)
  • 1366-5804
OpenAlex
W1992641574
Cited by
29
References
35
Citations by year
2026: 2 · 2025: 2 · 2024: 3 · 2023: 1 · 2021: 1 · 2020: 3 · 2019: 2 · 2018: 3 · 2017: 2 · 2015: 1 · 2014: 1 · 2013: 2 · 2012: 3
FWCI
1.42
Type
journal article
Language
en
Open access
closed
Locations
  • Biomarkers (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Rheumatology › Osteoarthritis Treatment and Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Protease and Inhibitor Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Proteoglycans and glycosaminoglycans research
Keywords
aggrecan degradation, aggrecanase, matrix metalloproteinases, osteoarthritis, articular cartilage, glycosylation
MeSH terms
ADAMTS4 Protein, Animals, Cartilage, Cattle, Glycosaminoglycans, Models, Biological, Osteoarthritis, Endopeptidases, Procollagen N-Endopeptidase, Blotting, Western, Biomarkers, Cytokines, Matrix Metalloproteinase 9, Matrix Metalloproteinases, Models, Animal, ADAM Proteins, Aggrecans

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