Investigations of octylglyceryl dextran-graft-poly(lactic acid) nanoparticles for peptide delivery to the brain

Asme Boussahel, Daniel M. Ibegbu, Rhita Lamtahri, Julie Maucotel, Julien Chuquet, Benjamin Lefranc, Jérôme Leprince, Marta Roldo, Jean-Claude Le Mével, Darek Gorecki, Eugen Barbu

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Abstract

Aim - Develop modified dextran nanoparticles showing potential to assist with drug permeation across the blood–brain barrier for the delivery of neuropeptides.

Methods - Nanoparticles loaded by emulsification with model macromolecular actives were characterized in terms of stability, cytotoxicity and drug-release behavior. Peptide-loaded nanoformulations were tested in an in vivo trout model and in food-deprived mice.

Results - Nanoformulations loaded with model peptides showed good stability and appeared nontoxic in low concentration against human brain endothelial cells. They were found to preserve the bioactivity of loaded peptides (angiotensin II) as demonstrated in vivo using a trout model, and to induce a transient reduction of food consumption in mice when loaded with an anorexigenic octaneuropeptide.

Conclusion - Octylglyceryl dextran-graft-poly(lactic acid) nanoparticles formulated by emulsification demonstrate potential for peptide delivery.
Original languageEnglish
Pages (from-to)879-892
Number of pages14
JournalNanomedicine
Volume12
Issue number8
Early online date24 Mar 2017
DOIs
Publication statusPublished - 1 Apr 2017

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