Molecular hurdles in polyfectin design and mechanistic background to polycation induced cytotoxicity

Hunter, A.C (2006) Molecular hurdles in polyfectin design and mechanistic background to polycation induced cytotoxicity Advanced Drug Delivery Reviews, 58 (14). pp. 1523-1531. ISSN 0169-409X

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Official URL: http://dx.doi.org/10.1016/j.addr.2006.09.008

Abstract

Synthetic polymer based Polyfectins (cationic polymer-DNA complex) have received intensive scientific research as they can potentially circumvent problems associated with viral vectors for gene therapy. These cationic macromolecules can readily condense DNA or RNA into stable nanostructures for use in gene delivery. Recently two commonly used polycations, poly(ethylenimine) (PEI) and poly(l-lysine) have demonstrated their ability to induce apoptosis in a range of human cell lines. This may be the explanation for short-term gene transfection observed with polyfectins. It is the aim of this review to discuss these and other factors behind observed toxicities including the inherent polydisperse nature of polymeric macromolecules and their behaviour in vivo. Strategies for reduction of toxicity are included such as new polymeric synthetic technologies and vector pegylation. There is a clear and immediate need for understanding of the mechanisms which cause polyfectin toxicity which will ultimately facilitate improved vector design and safer gene delivery.

Item Type:Journal article
Uncontrolled Keywords:Polyfectin; Polymer toxicity; Gene therapy; Apoptosis; MTT assay; Poly(ethylenimine); Poly(l-lysine); Biodegradable polymer; Gene transfection
Subjects:C000 Biological and Biomedical Sciences
DOI (a stable link to the resource):10.1016/j.addr.2006.09.008
Faculties:Faculty of Science and Engineering > School of Pharmacy and Biomolecular Sciences
ID Code:2567
Deposited By:editor spbs
Deposited On:08 Nov 2007
Last Modified:18 Jun 2010 12:32

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