Effects of stimulated aggrecanolysis on nanoscale morphological and mechanical properties of wild-type and aggrecanase-resistant mutant mice cartilages

Uddin, M, Wang, H, Rogerson, F, Lee, P and Zhang, X 2017, 'Effects of stimulated aggrecanolysis on nanoscale morphological and mechanical properties of wild-type and aggrecanase-resistant mutant mice cartilages', European Physical Journal E. Soft Matter, vol. 40, no. 8, pp. 1-7.


Document type: Journal Article
Collection: Journal Articles

Title Effects of stimulated aggrecanolysis on nanoscale morphological and mechanical properties of wild-type and aggrecanase-resistant mutant mice cartilages
Author(s) Uddin, M
Wang, H
Rogerson, F
Lee, P
Zhang, X
Year 2017
Journal name European Physical Journal E. Soft Matter
Volume number 40
Issue number 8
Start page 1
End page 7
Total pages 7
Publisher Springer
Abstract A key event in arthritis pathogenesis is the degradation of aggrecan, the major component in articular cartilage. In this work, we investigate the effects of stimulated aggrecanolysis on the morphological and nanomechanical properties of cartilage harvested from wild-type mice and aggrecanase-resistant mutant mice named "Jaffa". The cartilages were native or were subjected to stimulated aggrecanolysis by interleukin-1α (IL-1α) treatment. The nanoscale morphological and mechanical properties of the sectioned cartilages were measured by using a sharp probe by atomic force microscopy (AFM). The IL-1α treatment resulted in a higher nanoroughess and stiffness of the cartilage from wild-type mice. However, the same treatment did not lead to any measurable change in the nanoroughness or stiffness of the cartilage from mutant mice Jaffa. This suggests that blocking aggrecanolysis by genetic modification has created the stability in the structures and mechanical properties of the cartilage at nanoscale. The present study provides insight into the mechanism of aggrecan degradation, which can complement the examination by biochemical and histological techniques.
Subject Chemical Sciences not elsewhere classified
Keyword(s) Soft Matter: Interfacial Phenomena and Nanostructured Surfaces
DOI - identifier 10.1140/epje/i2017-11561-1
Copyright notice © 2017, EDP Sciences, SIF, Springer-Verlag GmbH Germany.
ISSN 1292-8941
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