Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Cannabidiol-Loaded Mixed Polymeric Micelles of Chitosan/Poly(Vinyl Alcohol) And Poly(Methyl Methacrylate) For Trans-Corneal Delivery

Version 1 : Received: 18 November 2021 / Approved: 19 November 2021 / Online: 19 November 2021 (14:48:27 CET)

A peer-reviewed article of this Preprint also exists.

Sosnik, A.; Shabo, R.B.; Halamish, H.M. Cannabidiol-Loaded Mixed Polymeric Micelles of Chitosan/Poly(Vinyl Alcohol) and Poly(Methyl Methacrylate) for Trans-Corneal Delivery. Pharmaceutics 2021, 13, 2142. Sosnik, A.; Shabo, R.B.; Halamish, H.M. Cannabidiol-Loaded Mixed Polymeric Micelles of Chitosan/Poly(Vinyl Alcohol) and Poly(Methyl Methacrylate) for Trans-Corneal Delivery. Pharmaceutics 2021, 13, 2142.

Journal reference: Pharmaceutics 2021, 13, 2142
DOI: 10.3390/pharmaceutics13122142

Abstract

Ocular drug delivery is one of the most challenging administration routes due to the very low drug bioavailability. In this work, we produce and characterize mucoadhesive mixed polymeric micelles (PMs) made of chitosan and poly(vinyl alcohol) backbones graft-hydrophobized with short poly(methyl methacrylate) blocks and use them to encapsulate cannabidiol (CBD), an anti-inflammatory cannabinoid. CBD-loaded mixed PMs are physically stabilized by ionotropic crosslinking of the CS domains with sodium tripolyphoshate and spray-drying. These mixed PMs display CBD loading capacity of 20% w/w and sizes of 100-200 nm, and spherical morphology (cryogenic-transmission electron microscopy). The good compatibility of the unloaded and CBD-loaded PMs is assessed in a human corneal epithelial cell line. Then, we confirm the permeability of CBD-free PMs and nanoencapsulated CBD in cornea cell monolayers under liquid-liquid and air-liquid conditions. Overall, our results highlight the potential of these polymeric nanocarriers for ocular drug delivery.

Keywords

Polymeric micelles; cannabidiol (CBD); spray-drying; ocular drug delivery; corneal epithelial cells

Subject

ENGINEERING, Biomedical & Chemical Engineering

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