Generation of a focused poly(amino ether) library

Polymer-mediated transgene delivery and gold-nanorod based theranostic systems

Lucas Vu, James Ramos, Thrimoorthy Potta, Kaushal Rege

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

A focused library of twenty-one cationic poly(amino ethers) was synthesized following ring-opening polymerization of two diglycidyl ethers by different oligoamines. The polymers were screened in parallel for plasmid DNA (pDNA) delivery, and transgene expression efficacies of individual polymers were compared to those of 25 kDa polyethylenimine (PEI), a current standard for polymer-mediated transgene delivery. Seven lead polymers that demonstrated higher transgene expression than PEI in pancreatic and prostate cancer cells lines were identified from the screen. All seven lead polymers showed highest transgene expression at a polymer:pDNA weight ratio of 5:1 in the MIA PaCa-2 pancreatic cancer cell line. Among the conditions studied, transgene expression efficacy correlated with minimal polymer cytotoxicity but not polyplex sizes. In addition, this study indicated that methylene spacing between amine centers in the monomers, amine content, and molecular weight of the polymers are all significant factors and should be considered when designing polymers for transgene delivery. A lead effective polymer was employed for coating gold nanorods, leading to theranostic nanoassemblies that possess combined transgene delivery and optical imaging capabilities, leading to potential theranostic systems.

Original languageEnglish (US)
Pages (from-to)1160-1173
Number of pages14
JournalTheranostics
Volume2
Issue number12
DOIs
StatePublished - 2012

Fingerprint

Nanotubes
Transgenes
Gold
Ether
Libraries
Polymers
Polyethyleneimine
Ethers
Pancreatic Neoplasms
Amines
Plasmids
Theranostic Nanomedicine
Cell Line
Optical Imaging
DNA
Polymerization
Prostatic Neoplasms
Molecular Weight
Weights and Measures

Keywords

  • Combinatorial synthesis
  • Gold nanorods
  • Non viral gene delivery
  • Polymer library
  • Two photon imaging

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Pharmacology, Toxicology and Pharmaceutics (miscellaneous)

Cite this

Generation of a focused poly(amino ether) library : Polymer-mediated transgene delivery and gold-nanorod based theranostic systems. / Vu, Lucas; Ramos, James; Potta, Thrimoorthy; Rege, Kaushal.

In: Theranostics, Vol. 2, No. 12, 2012, p. 1160-1173.

Research output: Contribution to journalArticle

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