A new antisense oligonucleotide delivery system based on self-assembled ODN-PEG hybrid conjugate micelles

Ji Hoon Jeong, Sung Wan Kim, Tae Gwan Park

Research output: Contribution to journalArticlepeer-review

86 Scopus citations

Abstract

The conjugate of antisense c-raf oligonucleotide (ODN) and poly(ethylene glycol) (PEG) was synthesized for intracellular ODN delivery. When combined with polyethylenimine (PEI), the ODN-PEG conjugate self-associated to form polyelectrolyte complex micelles in aqueous solution. The effective hydrodynamic diameter of the micelles was ca. 70 nm with a narrow size distribution. Flow cytometry analysis indicated that the cellular uptake of the micelles by A2780 cells was much higher than that of ODN alone. The micelles also showed a superior antiproliferative activity against ovarian cancer cells in vitro and in vivo.

Original languageEnglish
Pages (from-to)183-191
Number of pages9
JournalJournal of Controlled Release
Volume93
Issue number2
DOIs
StatePublished - Dec 5 2003
Externally publishedYes

Funding

This study was supported from the Ministry of Science and Technology (M10214000117-02b1500-02110), from National Cancer Center (02-3-150), from the Ministry of Information and Communication (IMT-2000-B3-2), Republic of Korea.

FundersFunder number
National Cancer Center02-3-150
Ministerio de Ciencia y TecnologíaM10214000117-02b1500-02110
Ministry of Information and CommunicationIMT-2000-B3-2

    Keywords

    • Conjugate
    • Delivery
    • Micelles
    • ODN
    • PEG

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