Targeted gene delivery by polyplex micelles with crowded PEG palisade and cRGD moiety for systemic treatment of pancreatic tumors

Zhishen Ge, Qixian Chen, Kensuke Osada, Xueying Liu, Theofilus A. Tockary, Satoshi Uchida, Anjaneyulu Dirisala, Takehiko Ishii, Takahiro Nomoto, Kazuko Toh, Yu Matsumoto, Makoto Oba, Mitsunobu Kano, Keiji Itaka, Kazunori Kataoka

Research output: Contribution to journalArticle

76 Citations (Scopus)

Abstract

Adequate retention in systemic circulation is the preliminary requirement for systemic gene delivery to afford high bioavailability into the targeted site. Polyplex micelle formulated through self-assembly of oppositely-charged poly(ethylene glycol) (PEG)-polycation block copolymer and plasmid DNA has gained tempting perspective upon its advantageous core-shell architecture, where outer hydrophilic PEG shell offers superior stealth behaviors. Aiming to promote these potential characters toward systemic applications, we strategically introduced hydrophobic cholesteryl moiety at the ω-terminus of block copolymer, anticipating to promote not only the stability of polyplex structure but also the tethered PEG crowdedness. Moreover, Mw of PEG in the PEGylated polyplex micelle was elongated up to 20 kDa for expecting further enhancement in PEG crowdedness. Furthermore, cyclic RGD peptide as ligand molecule to integrin receptors was installed at the distal end of PEG in order for facilitating targeted delivery to the tumor site as well as promoting cellular uptake and intracellular trafficking behaviors. Thus constructed cRGD conjugated polyplex micelle with the elevated PEG shielding was challenged to a modeled intractable pancreatic cancer in mice, achieving potent tumor growth suppression by efficient gene expression of antiangiogenic protein (sFlt-1) at the tumor site.

Original languageEnglish
Pages (from-to)3416-3426
Number of pages11
JournalBiomaterials
Volume35
Issue number10
DOIs
Publication statusPublished - Mar 2014

Fingerprint

Micelles
Polyethylene glycols
Tumors
Genes
Neoplasms
Cyclic Peptides
Ethylene Glycol
Pancreatic Neoplasms
Integrins
Biological Availability
Plasmids
Block copolymers
Ligands
Gene Expression
DNA
Growth
Proteins
Gene expression
Shielding
Self assembly

Keywords

  • DNA
  • Gene transfer
  • In vitro test
  • In vivo test
  • Micelle
  • Nanoparticle

ASJC Scopus subject areas

  • Biomaterials
  • Bioengineering
  • Ceramics and Composites
  • Mechanics of Materials
  • Biophysics

Cite this

Targeted gene delivery by polyplex micelles with crowded PEG palisade and cRGD moiety for systemic treatment of pancreatic tumors. / Ge, Zhishen; Chen, Qixian; Osada, Kensuke; Liu, Xueying; Tockary, Theofilus A.; Uchida, Satoshi; Dirisala, Anjaneyulu; Ishii, Takehiko; Nomoto, Takahiro; Toh, Kazuko; Matsumoto, Yu; Oba, Makoto; Kano, Mitsunobu; Itaka, Keiji; Kataoka, Kazunori.

In: Biomaterials, Vol. 35, No. 10, 03.2014, p. 3416-3426.

Research output: Contribution to journalArticle

Ge, Z, Chen, Q, Osada, K, Liu, X, Tockary, TA, Uchida, S, Dirisala, A, Ishii, T, Nomoto, T, Toh, K, Matsumoto, Y, Oba, M, Kano, M, Itaka, K & Kataoka, K 2014, 'Targeted gene delivery by polyplex micelles with crowded PEG palisade and cRGD moiety for systemic treatment of pancreatic tumors', Biomaterials, vol. 35, no. 10, pp. 3416-3426. https://doi.org/10.1016/j.biomaterials.2013.12.086
Ge, Zhishen ; Chen, Qixian ; Osada, Kensuke ; Liu, Xueying ; Tockary, Theofilus A. ; Uchida, Satoshi ; Dirisala, Anjaneyulu ; Ishii, Takehiko ; Nomoto, Takahiro ; Toh, Kazuko ; Matsumoto, Yu ; Oba, Makoto ; Kano, Mitsunobu ; Itaka, Keiji ; Kataoka, Kazunori. / Targeted gene delivery by polyplex micelles with crowded PEG palisade and cRGD moiety for systemic treatment of pancreatic tumors. In: Biomaterials. 2014 ; Vol. 35, No. 10. pp. 3416-3426.
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