Solid-phase synthesis, characterization, and cellular activities of collagen-model nanodiamond-peptide conjugates

Biopolymers
Anna M KnapinskaGregg B Fields

Abstract

Nanodiamonds (NDs) have received considerable attention as potential drug delivery vehicles. NDs are small (∼5 nm diameter), can be surface modified in a controllable fashion with a variety of functional groups, and have little observed toxicity in vitro and in vivo. However, most biomedical applications of NDs utilize surface adsorption of biomolecules, as opposed to covalent attachment. Covalent modification provides reliable and reproducible ND-biomolecule ratios, and alleviates concerns over biomolecule desorption prior to delivery. The present study has outlined methods for the efficient solid-phase conjugation of ND to peptides and characterization of ND-peptide conjugates. Utilizing collagen-derived peptides, the ND was found to support or even enhance the cell adhesion and viability activities of the conjugated sequence. Thus, NDs can be incorporated into peptides and proteins in a selective manner, where the presence of the ND could potentially enhance the in vivo activities of the biomolecule it is attached to.

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Citations

Feb 8, 2016·Journal of Colloid and Interface Science·James GiammarcoYury Gogotsi
Sep 2, 2016·The Journal of Physical Chemistry. B·Gurpreet K DhindsaXiang-Qiang Chu
Nov 20, 2016·International Journal of Pharmaceutics·Dae Gon LimSeong Hoon Jeong
Mar 16, 2017·ACS Nano·Beatriz PelazWolfgang J Parak

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