PEG-PEI copolymers for oligonucleotide delivery to cells and tissues

Gordon J. Lutz, Shashank R. Sirsi, Jason H. Williams

Research output: Chapter in Book/Report/Conference proceedingChapter

16 Citations (Scopus)

Abstract

Inefficient delivery of antisense oligonucleotides (AO) to target cell nuclei remains as the foremost limitation to their usefulness. Copolymers of cationic poly(ethylene imine) (PEI) and polyethylene glycol (PEG) are extremely well-studied compounds that markedly improve the in vitro and in vivo delivery of AOs to cells and tissues. By varying the Mw of PEI, as well as the nature of PEG shielding, PEG-PEI-AO nanoparticulates can be prepared with a dynamic range of size, surface charge, and stability. Each of these properties in-turn influences the transfection capacity of the PEG-PEI-AO polyplexes. In addition, PEG-PEI copolymers are readily functionalized for enhanced efficacy and specificity of cellular and tissue targeting. The synthesis and functionalization of PEG-PEI copolymers is remarkably simple and requires very little specialized equipment. Thus, PEG-PEI copolymers represent a tractable and adaptable oligonucleotide delivery system that can be customized and optimized to the investigators' specific application. This chapter describes the step-by-step synthesis of several PEG-PEI copolymers that are specifically formulated to provide effective delivery of AOs using both in vitro and in vivo applications. We describe the preparation of the PEG-PEI-AO polyplexes and provide examples showing transfection of cultured cells in vitro, as well as skeletal muscles in vivo using both local and systemic delivery.

Original languageEnglish (US)
Title of host publicationGene Therapy Protocols
Subtitle of host publicationProduction and In Vivo Applications of Gene Transfer Vectors
PublisherHumana Press
Pages141-158
Number of pages18
Volume433
ISBN (Print)9781588299031
DOIs
StatePublished - Jan 1 2008

Publication series

NameMethods in Molecular Biology
Volume433
ISSN (Print)1064-3745

Fingerprint

Oligonucleotides
Antisense Oligonucleotides
Transfection
Organ Specificity
Cell Nucleus
Cultured Cells
Skeletal Muscle
Research Personnel
Equipment and Supplies
In Vitro Techniques

Keywords

  • Drug delivery
  • Nanopolymers
  • Oligonucleotides
  • Poly(ethylene imine)
  • Transfection

ASJC Scopus subject areas

  • Molecular Biology
  • Genetics

Cite this

Lutz, G. J., Sirsi, S. R., & Williams, J. H. (2008). PEG-PEI copolymers for oligonucleotide delivery to cells and tissues. In Gene Therapy Protocols: Production and In Vivo Applications of Gene Transfer Vectors (Vol. 433, pp. 141-158). (Methods in Molecular Biology; Vol. 433). Humana Press. https://doi.org/10.1007/978-1-59745-237-3_9

PEG-PEI copolymers for oligonucleotide delivery to cells and tissues. / Lutz, Gordon J.; Sirsi, Shashank R.; Williams, Jason H.

Gene Therapy Protocols: Production and In Vivo Applications of Gene Transfer Vectors. Vol. 433 Humana Press, 2008. p. 141-158 (Methods in Molecular Biology; Vol. 433).

Research output: Chapter in Book/Report/Conference proceedingChapter

Lutz, GJ, Sirsi, SR & Williams, JH 2008, PEG-PEI copolymers for oligonucleotide delivery to cells and tissues. in Gene Therapy Protocols: Production and In Vivo Applications of Gene Transfer Vectors. vol. 433, Methods in Molecular Biology, vol. 433, Humana Press, pp. 141-158. https://doi.org/10.1007/978-1-59745-237-3_9
Lutz GJ, Sirsi SR, Williams JH. PEG-PEI copolymers for oligonucleotide delivery to cells and tissues. In Gene Therapy Protocols: Production and In Vivo Applications of Gene Transfer Vectors. Vol. 433. Humana Press. 2008. p. 141-158. (Methods in Molecular Biology). https://doi.org/10.1007/978-1-59745-237-3_9
Lutz, Gordon J. ; Sirsi, Shashank R. ; Williams, Jason H. / PEG-PEI copolymers for oligonucleotide delivery to cells and tissues. Gene Therapy Protocols: Production and In Vivo Applications of Gene Transfer Vectors. Vol. 433 Humana Press, 2008. pp. 141-158 (Methods in Molecular Biology).
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