Abstract

We have used the pH-induced self-assembly of a peptide-amphiphile to make a nanostructured fibrous scaffold reminiscent of extracellular matrix. The design of this peptide-amphiphile allows the nanofibers to be reversibly cross-linked to enhance or decrease their structural integrity. After cross-linking, the fibers are able to direct mineralization of hydroxyapatite to form a composite material in which the crystallographic c axes of hydroxyapatite are aligned with the long axes of the fibers. This alignment is the same as that observed between collagen fibrils and hydroxyapatite crystals in bone.

Keywords

NanofiberAmphiphileMineralization (soil science)PeptideBiomineralizationExtracellular matrixSelf-assemblyFibrilMaterials scienceBiophysicsChemistryChemical engineeringNanotechnologyPolymerComposite materialBiochemistryCopolymerOrganic chemistry

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Publication Info

Year
2001
Type
article
Volume
294
Issue
5547
Pages
1684-1688
Citations
3546
Access
Closed

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Jeffrey D. Hartgerink, Elia Beniash, Samuel I. Stupp (2001). Self-Assembly and Mineralization of Peptide-Amphiphile Nanofibers. Science , 294 (5547) , 1684-1688. https://doi.org/10.1126/science.1063187

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DOI
10.1126/science.1063187