Toggle Main Menu Toggle Search

Open Access padlockePrints

Lipophilic statins prevent matrix metalloproteinase-mediated cartilage collagen breakdown by inhibiting protein geranylgeranylation

Lookup NU author(s): Dr Matthew Barter, Dr Rachel Lakey, Dr Jonathan Catterall, Emeritus Professor Tim Cawston, Professor David Young

Downloads


Abstract

Objective To investigate if statins prevent cartilage degradation and the production of collagenases and gelatinases in bovine nasal and human articular cartilage after proinflammatory cytokine stimulation. Methods In a cartilage degradation model, the effects of several statins were assessed by measuring proteoglycan degradation and collagen degradation, while collagenolytic and gelatinolytic activity in culture supernatants were determined by collagen bioassay and gelatin zymography. The production of matrix metalloproteinases (MMPs) in cartilage and chondrocytes were analysed by real-time reverse transcriptase PCR and immunoassay. Cytokine-induced signalling pathway activation was studied by immunoblotting. Results Simvastatin and mevastatin significantly inhibited interleukin 1 (IL-1) + oncostatin M (OSM)-induced collagen degradation; this was accompanied with a marked decrease in collagenase and gelatinase activity from bovine nasal cartilage. The cholesterol pathway intermediate mevalonic acid reversed the simvastatin-mediated protection of cartilage degradation, and the expression and production of collagenase (MMP-1 and MMP-13) and gelatinase (MMP-2 and MMP-9). Statins also significantly decreased MMP-1 and MMP-13 expression in human articular cartilage and chondrocytes stimulated with IL-1+ OSM, and blocked the activation of critical proinflammatory signalling pathways required for MMP expression. The loss of the isoprenoid intermediate geranylgeranyl pyrophosphate due to statin treatment accounted for the inhibition of MMP expression and signalling pathway activation. Conclusions This study shows, for the first time, that lipophilic statins are able to block cartilage collagen breakdown induced by proinflammatory cytokines, by downregulating key cartilage-degrading enzymes. This demonstrates a possible therapeutic role for statins in acting as anti-inflammatory agents and in protecting cartilage from damage in joint diseases.


Publication metadata

Author(s): Barter MJ, Hui W, Lakey RL, Catterall JB, Cawston TE, Young DA

Publication type: Article

Publication status: Published

Journal: Annals of the Rheumatic Diseases

Year: 2010

Volume: 69

Issue: 12

Pages: 2189-2198

Print publication date: 01/12/2010

Date deposited: 22/12/2010

ISSN (print): 0003-4967

ISSN (electronic): 1468-2060

Publisher: BMJ Group

URL: http://dx.doi.org/10.1136/ard.2010.129197

DOI: 10.1136/ard.2010.129197

PubMed id: 20693272


Altmetrics

Altmetrics provided by Altmetric


Actions

Find at Newcastle University icon    Link to this publication


Share