Acquired Enamel Pellicle Engineered Peptides: Effects on Hydroxyapatite Crystal Growth.

Abstract:

:The aim of this study was to test the hypothesis that duplication/hybridization of functional domains of naturally occurring pellicle peptides amplified the inhibitory effect of hydroxyapatite crystal growth, which is related to enamel remineralization and dental calculus formation. Histatin 3, statherin, their functional domains (RR14 and DR9), and engineered peptides (DR9-DR9 and DR9-RR14) were tested at seven different concentrations to evaluate the effect on hydroxyapatite crystal growth inhibition. A microplate colorimetric assay was used to quantify hydroxyapatite crystal growth. The half-maximal inhibitory concentration (IC50) was determined for each group. ANOVA and Student-Newman-Keuls pairwise comparisons were used to compare the groups. DR9-DR9 increased the inhibitory effect of hydroxyapatite crystal growth compared to single DR9 (p < 0.05), indicating that functional domain multiplication represented a strong protein evolution pathway. Interestingly, the hybrid peptide DR9-RR14 had an intermediate inhibitory effect compared to DR9 and DR9-DR9. This study used an engineered peptide approach to investigate a potential evolution protein pathway related to duplication/hybridization of acquired enamel pellicle's natural peptide constituents, contributing to the development of synthetic peptides for therapeutic use against dental caries and periodontal disease.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Valente MT,Moffa EB,Crosara KTB,Xiao Y,de Oliveira TM,Machado MAAM,Siqueira WL

doi

10.1038/s41598-018-21854-4

subject

Has Abstract

pub_date

2018-02-28 00:00:00

pages

3766

issue

1

issn

2045-2322

pii

10.1038/s41598-018-21854-4

journal_volume

8

pub_type

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