Grafting MAP peptide to dental polymer inhibits MMP-8 activity.

Grafting MAP peptide to dental polymer inhibits MMP-8 activity.
J Biomed Mater Res B Appl Biomater. 2014 May 29;
Authors: Dixit N, Settle JK, Ye Q, Berrie CL, Spencer P, Laurence JS
Abstract
Matrix metalloproteinases (MMPs) are a class of zinc and calcium-dependent endopeptidases responsible for degrading extracellular matrix (ECM) components. Their activity is critical for both normal biological function and pathological processes (Dejonckheere et al., Cytokine Growth Factor Rev 2011;22:73-81). In dental restorations, the release and subsequent acid activation of MMPs contributes to premature failure. In particular, MMP-8 accelerates degradation by cleaving the collagen matrix within the dentin substrate in incompletely infiltrated aged bonded dentin (Buzalaf et al., Adv Dent Res 2012;24:72-76), hastening the need for replacement of restorations. Therefore, development of a dental adhesive that better resists MMP-8 activity is of significant interest. We hypothesize that modification of the polymer surface with an inhibitor would disable MMP-8 activity. Here, we identify the metal abstraction peptide (MAP) as an inhibitor of MMP-8 and demonstrate that tethering MAP to methacrylate polymers effectively inhibits catalysis. Our findings indicate complete inhibition of MMP-8 is achievable using a grafting approach. This strategy has potential to improve longevity of dental adhesives and other polymers and enable rational design of a new...

Source: Adv Dent Res - May 29, 2014 Category: Dentistry Authors: Dixit N, Settle JK, Ye Q, Berrie CL, Spencer P, Laurence JS Tags: J Biomed Mater Res B Appl Biomater Source Type: research