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

A.C. Hunter

Research output: Contribution to journalArticle

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.
Original languageEnglish
Pages (from-to)1523-1531
Number of pages9
JournalAdvanced Drug Delivery Reviews
Volume58
Issue number14
Publication statusPublished - 1 Dec 2006

Fingerprint

Polymers
Genes
Aptitude
Viral Genes
Nanostructures
DNA
Genetic Therapy
Lysine
Transfection
RNA
Apoptosis
Technology
Cell Line
Research
polycations
aziridine

Keywords

  • Polyfectin
  • Polymer toxicity
  • Gene therapy
  • Apoptosis
  • MTT assay
  • Poly(ethylenimine)
  • Poly(l-lysine)
  • Biodegradable polymer
  • Gene transfection

Cite this

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Molecular hurdles in polyfectin design and mechanistic background to polycation induced cytotoxicity. / Hunter, A.C.

In: Advanced Drug Delivery Reviews, Vol. 58, No. 14, 01.12.2006, p. 1523-1531.

Research output: Contribution to journalArticle

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