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- Title
CIINE Reflects Collagenase-Specific CII Breakdown in Cartilage Explant and Whole Body of Canine.
- Authors
Satoko Matsukawa; Miki Tanimura; Tomoko Toyosaki-Maeda; Akihiro Noda; Kobayashi, Mika; Akira Yamauchi; Junji Onoda; Toshinaga Tsuji; Tatsuya Takahashi; Yoshiyuki Matsuo; Naoshi Fukui
- Abstract
To evaluate collagenase inhibitors for the treatment of osteoarthritis and to correlate them with clinical pathology, canine cartilage explant and anterior cruciate ligament transection (ACLT) models were examined by quantifying the CII neoepitope (CIINE). This peptide is a putative marker for collagenase-specific type II collagen (CII) degradation, which is a critical step in osteoarthritis pathology. The concentration of CIINE in supernatants of canine cartilage explants showed increase upon IL-1β-stimulation and collagenase inhibitors suppressed this elevation of CIINE. In the canine ACLT model, levels of CIINE in urine (uCIINE) increased as lesions of knee joint cartilage developed and decreased in response to collagenase inhibitors. Our results suggest that CIINE reflects collagenase-specific CII degradation in canine explants and whole bodies. It is anticipated that these data will establish a tool for clarifying and bridging the efficacy and mechanism of collagenase inhibitors at the preclinical stage of drug discovery.
- Subjects
COLLAGENASES; ANTERIOR cruciate ligament; OSTEOARTHRITIS treatment; MATRIX metalloproteinases; BIOMARKERS
- Publication
Biomarker Insights, 2013, Issue 8, p77
- ISSN
1177-2719
- Publication type
Article
- DOI
10.4137/BMI.S11627