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Evaluation of intermolecular interactions of self-etch dentin adhesive primer molecules with type 1 collagen: Computer modeling and in vitro binding analysis

Paper ID Volume ID Publish Year Pages File Format Full-Text
2203 103 2007 10 PDF Available
Title
Evaluation of intermolecular interactions of self-etch dentin adhesive primer molecules with type 1 collagen: Computer modeling and in vitro binding analysis
Abstract

The objective of this investigation was to study adhesion of self-etch primer systems to dentin by computer-modeled docking simulations and in vitro binding assay methods. Computer modeling employed analysis of docking simulations of a self-etch primer molecule 10-methacryloxydecamethylene phosphoric acid (MDP) and its calcium salt (MDPCa) as ligands. Typical type 1 collagen segments were selected as targets to reflect potential differences in the amino acid residues in dentinal type 1 collagen triple helix motif. The binding assay involved immunochemical analysis of the modification of anti-collagen binding to collagen by prior exposure of the demineralized dentin to MDP. The estimated mean docking energy values ranged between −4.5 and −8.9 kcal mol−1. The results revealed significant differences in the docking energy estimates as a function of ligand and target structures (p < 0.01). Van der Waals and electrostatic contributions were also significantly influenced by ligand selection and collagen structure. Both MDP and MDPCa appear to be important in the overall interactions. Binding assay studies also lend evidence of collagen–ligand intermolecular interactions. It is suggested that the ability of self-etch dentin primer systems to bond effectively to dentin is not limited to the interaction of the primer with the hydroxyapatite of dentin, but also due to the ability to prime dentin efficiently through intermolecular interactions between the primer and its calcium salt with the collagen matrix. Virtual screening methods may be very valuable to select primer molecules for dentin bonding.

Keywords
Collagen; Primer ligand; Docking; Interaction energy; Immunochemical binding
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Evaluation of intermolecular interactions of self-etch dentin adhesive primer molecules with type 1 collagen: Computer modeling and in vitro binding analysis
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Publisher
Database: Elsevier - ScienceDirect
Journal: Acta Biomaterialia - Volume 3, Issue 5, September 2007, Pages 705–714
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us