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Direct contact-mediated non-viral gene therapy using thermo-sensitive hydrogel-coated dressings

Eltaher, Hoda M.; Blokpoel Ferreras, Lia A.; Jalal, Aveen R.; Dixon, James

Authors

Lia A. Blokpoel Ferreras

Aveen R. Jalal

JAMES DIXON JAMES.DIXON@NOTTINGHAM.AC.UK
Associate Professor



Abstract

Nanotechnologies are being increasingly applied as systems for peptide and nucleic acid macromolecule drug delivery. However systemic targeting of these, or efficient topical and localized delivery remains an issue. A controlled release system that can be patterned and locally administered such as topically to accessible tissue (skin, eye, intestine) would therefore be transformative in realizing the potential of such strategies. We previously developed a technology termed GAG-binding enhanced transduction (GET) to efficiently deliver a variety of cargoes intracellularly, using GAG-binding peptides to mediate cell targeting, and cell penetrating peptides (CPPs) to promote uptake. Herein we demonstrate that the GET transfection system can be used with the moisturizing thermo-reversible hydrogel Pluronic-F127 (PF127) and methyl cellulose (MC) to mediate site specific and effective intracellular transduction and gene delivery through GET nanoparticles (NPs). We investigated hydrogel formulation and the temperature dependence of delivery, optimizing the delivery system. GET-NPs retain their activity to enhance gene transfer within our formulations, with uptake transferred to cells in direct contact with the therapy-laden hydrogel. By using Azowipe™ material in a bandage approach, we were able to show for the first-time localized gene transfer in vitro on cell monolayers. The ability to simply control localization of gene delivery on millimetre scales using contact-mediated transfer from moisture-providing thermo-reversible hydrogels will facilitate new drug delivery methods. Importantly our technology to site-specifically deliver the activity of novel nanotechnologies and gene therapeutics could be transformative for future regenerative medicine.

Journal Article Type Article
Acceptance Date Oct 26, 2022
Online Publication Date Nov 2, 2022
Publication Date Dec 1, 2022
Deposit Date Nov 24, 2022
Journal Biomaterials Advances
Electronic ISSN 2772-9508
Peer Reviewed Peer Reviewed
Volume 143
Article Number 213177
DOI https://doi.org/10.1016/j.bioadv.2022.213177
Keywords Biomaterials; Biomedical Engineering; Bioengineering
Public URL https://nottingham-repository.worktribe.com/output/13464308
Publisher URL https://www.sciencedirect.com/science/article/pii/S277295082200454X?via%3Dihub