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Article: A novel self-assembled oligopeptide amphiphile for biomimetic mineralization of enamel

TitleA novel self-assembled oligopeptide amphiphile for biomimetic mineralization of enamel
Authors
KeywordsAmelogenin
Biomimetic
Enamel
Mineralization
Peptide
Remineralization
Self-assemble
Issue Date2014
PublisherBioMed Central Ltd. The Journal's web site is located at http://www.biomedcentral.com/bmcbiotechnol/
Citation
BMC Biotechnology, 2014, v. 14, article no. 32 How to Cite?
AbstractBackground Researchers are looking for biomimetic mineralization of ena/mel to manage dental erosion. This study evaluated biomimetic mineralization of demineralized enamel induced by a synthetic and self-assembled oligopeptide amphiphile (OPA). Results The results showed that the OPA self-assembled into nano-fibres in the presence of calcium ions and in neutral acidity. The OPA was alternately immersed in calcium chloride and sodium hypophosphate solutions to evaluate its property of mineralization. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) showed nucleation and growth of amorphous calcium phosphate along the self-assembled OPA nano-fibres when it was repetitively exposed to solutions with calcium and phosphate ions. Energy dispersive spectrometry (EDS) confirmed that these nano-particles contained calcium and phosphate. Furthermore, electron diffraction pattern suggested that the nano-particles precipitated on OPA nano-fibres were comparable to amorphous calcium phosphate. Acid-etched human enamel slices were incubated at 37°C in metastable calcium phosphate solution with the OPA for biomimetic mineralization. SEM and X-ray diffraction indicated that the OPA induced the formation of hydroxyapatite crystals in organized bundles on etched enamel. TEM micrographs revealed there were 20–30 nm nano-amorphous calcium phosphate precipitates in the biomimetic mineralizing solution. The particles were found separately bound to the oligopeptide fibres. Biomimetic mineralization with or without the oligopeptide increased demineralized enamel microhardness. Conclusions A novel OPA was successfully fabricated, which fostered the biomimetic mineralization of demineralized enamel. It is one of the primary steps towards the design and construction of novel biomaterial for future clinical therapy of dental erosion.
Persistent Identifierhttp://hdl.handle.net/10722/215029
ISSN
2023 Impact Factor: 3.5
2023 SCImago Journal Rankings: 0.724
PubMed Central ID
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLi, Q-
dc.contributor.authorNing, TY-
dc.contributor.authorCao, Y-
dc.contributor.authorZhang, WB-
dc.contributor.authorMei, L-
dc.contributor.authorChu, CH-
dc.date.accessioned2015-08-21T12:19:55Z-
dc.date.available2015-08-21T12:19:55Z-
dc.date.issued2014-
dc.identifier.citationBMC Biotechnology, 2014, v. 14, article no. 32-
dc.identifier.issn1472-6750-
dc.identifier.urihttp://hdl.handle.net/10722/215029-
dc.description.abstractBackground Researchers are looking for biomimetic mineralization of ena/mel to manage dental erosion. This study evaluated biomimetic mineralization of demineralized enamel induced by a synthetic and self-assembled oligopeptide amphiphile (OPA). Results The results showed that the OPA self-assembled into nano-fibres in the presence of calcium ions and in neutral acidity. The OPA was alternately immersed in calcium chloride and sodium hypophosphate solutions to evaluate its property of mineralization. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) showed nucleation and growth of amorphous calcium phosphate along the self-assembled OPA nano-fibres when it was repetitively exposed to solutions with calcium and phosphate ions. Energy dispersive spectrometry (EDS) confirmed that these nano-particles contained calcium and phosphate. Furthermore, electron diffraction pattern suggested that the nano-particles precipitated on OPA nano-fibres were comparable to amorphous calcium phosphate. Acid-etched human enamel slices were incubated at 37°C in metastable calcium phosphate solution with the OPA for biomimetic mineralization. SEM and X-ray diffraction indicated that the OPA induced the formation of hydroxyapatite crystals in organized bundles on etched enamel. TEM micrographs revealed there were 20–30 nm nano-amorphous calcium phosphate precipitates in the biomimetic mineralizing solution. The particles were found separately bound to the oligopeptide fibres. Biomimetic mineralization with or without the oligopeptide increased demineralized enamel microhardness. Conclusions A novel OPA was successfully fabricated, which fostered the biomimetic mineralization of demineralized enamel. It is one of the primary steps towards the design and construction of novel biomaterial for future clinical therapy of dental erosion.-
dc.languageeng-
dc.publisherBioMed Central Ltd. The Journal's web site is located at http://www.biomedcentral.com/bmcbiotechnol/-
dc.relation.ispartofBMC Biotechnology-
dc.rightsBMC Biotechnology. Copyright © BioMed Central Ltd.-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectAmelogenin-
dc.subjectBiomimetic-
dc.subjectEnamel-
dc.subjectMineralization-
dc.subjectPeptide-
dc.subjectRemineralization-
dc.subjectSelf-assemble-
dc.titleA novel self-assembled oligopeptide amphiphile for biomimetic mineralization of enamel-
dc.typeArticle-
dc.identifier.emailMei, L: mei1123@hku.hk-
dc.identifier.emailChu, CH: chchu@hku.hk-
dc.identifier.authorityMei, L=rp01840-
dc.identifier.authorityChu, CH=rp00022-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1186/1472-6750-14-32-
dc.identifier.pmid24766767-
dc.identifier.pmcidPMC4021083-
dc.identifier.scopuseid_2-s2.0-84899986848-
dc.identifier.hkuros247549-
dc.identifier.volume14-
dc.identifier.spagearticle no. 32-
dc.identifier.epagearticle no. 32-
dc.identifier.eissn1472-6750-
dc.identifier.isiWOS:000335359100001-
dc.publisher.placeUnited Kingdom-
dc.identifier.issnl1472-6750-

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