Accessibility navigation


A comparison of thiolated and disulfide‐crosslinked polyethylenimine for nonviral gene delivery

Aravindan, L., Bicknell, K.A., Brooks, G., Khutoryanskiy, V.V. and Williams, A.C. (2013) A comparison of thiolated and disulfide‐crosslinked polyethylenimine for nonviral gene delivery. Macromolecular Bioscience, 13 (9). pp. 1163-1173. ISSN 1616-5187

Full text not archived in this repository.

It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing.

To link to this item DOI: 10.1002/mabi.201300103

Abstract/Summary

Branched polyethylenimine (25 kDa) is thiolated and compared with redox-sensitive crosslinked derivatives. Both polymers thiol contents are assessed; the thiolated polymers have 390–2300 mmol SH groups/mol, whereas the crosslinked polymers have lower thiol contents. Cytotoxicity assays show that both modified polymers give lower hemolysis than unmodified PEI. Increased thiol content increases gene transfer efficiency but also elevates cytotoxicity. Crosslinking improves plasmid DNA condensation and enhances transfection efficiency, but extensive crosslinking overstabilizes the polyplexes and decreases transfection, emphasizing the need to balance polyplex stabilization and unpacking. Thus, at low levels of crosslinking, 25 kDa PEI can be an efficient redox-sensitive carrier system.

Item Type:Article
Refereed:Yes
Divisions:Interdisciplinary centres and themes > Chemical Analysis Facility (CAF) > Thermal (CAF)
Faculty of Life Sciences > School of Biological Sciences > Biomedical Sciences
Faculty of Life Sciences > School of Chemistry, Food and Pharmacy > School of Pharmacy > Division of Pharmacology
Faculty of Life Sciences > School of Chemistry, Food and Pharmacy > School of Pharmacy > Pharmaceutics Research Group
ID Code:34304
Publisher:Wiley

University Staff: Request a correction | Centaur Editors: Update this record

Page navigation