Glucosamine-NISV delivers antibody across the blood-brain barrier: Optimization for treatment of encephalitic viruses.

Journal of Controlled Release : Official Journal of the Controlled Release Society
Stuart WoodsRiccardo V D'Elia

Abstract

The field of brain drug delivery faces many challenges that hinder development and testing of novel therapies for clinically important central nervous system disorders. Chief among them is how to deliver large biologics across the highly restrictive blood-brain barrier. Non-ionic surfactant vesicles (NISV) have long been used as a drug delivery platform for cutaneous applications and have benefits over comparable liposomes in terms of greater stability, lower cost and suitability for large scale production. Here we describe a glucosamine-coated NISV, for blood-brain barrier GLUT1 targeting, capable of traversing the barrier and delivering active antibody to cells within the brain. In vitro, we show glucosamine vesicle transcytosis across the blood-brain barrier with intact cargo, which is partially dynamin-dependent, but is clathrin-independent and does not associate with sorting endosome marker EEA1. Uptake of vesicles into astrocytes follows a more classical pathway involving dynamin, clathrin, sorting endosomes and Golgi trafficking where the cargo is released intracellularly. In vivo, glucosamine-coated vesicles are superior to uncoated or transferrin-coated vesicles for delivering cargo to the mouse brain. Finally, mice in...Continue Reading

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May 19, 2021·Tissue Barriers·Fruzsina R WalterMária A Deli

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