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Target specific systemic delivery of TGF-β siRNA/(PEI-SS)-g-HA complex for the treatment of liver cirrhosis

  • Kitae Park
  • , Sung Woo Hong
  • , Wonhee Hur
  • , Min Young Lee
  • , Jeong A. Yang
  • , Sung Woo Kim
  • , Seung Kew Yoon
  • , Sei Kwang Hahn

Research output: Contribution to journalArticlepeer-review

63 Scopus citations

Abstract

A target specific systemic delivery system of siRNA therapeutics was successfully developed using reducible polyethyleneimine grafted hyaluronic acid [(PEI-SS)-g-HA] conjugates. The PEI-SS was synthesized by Michael addition of low molecular weight PEI (MW = 2000) with cystaminebisacrylamide (CBA), and grafted to carboxyl groups of HA via amide bond formation after activation with 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (EDC) and 1-hydroxybenzotriazole monohydrate (HOBt). The confocal microscopic and fluorometric analyses confirmed the effective cellular uptake of siRNA/(PEI-SS)-g-HA complex by HA receptor mediated endocytosis. In vitro gene silencing efficiency was ca. 80% in the presence of 10 vol% serum and ca. 50% in the presence of 50 vol% serum in B16F1 melanoma cells and activated hepatic stellate cells (HSCs). Furthermore, target specific systemic delivery of apolipoprotein B (ApoB) siRNA/(PEI-SS)-g-HA complex resulted in a drastically reduced ApoB mRNA level down to ca. 20% in a dose-dependent manner. Finally, TGF-β siRNA/(PEI-SS)-g-HA complex showed a feasible therapeutic effect on liver cirrhosis with a significantly reduced nodule formation, collagen content, and HSC number. The siRNA/(PEI-SS)-g-HA complex can be exploited for the target specific systemic treatment of various liver diseases.

Original languageEnglish
Pages (from-to)4951-4958
Number of pages8
JournalBiomaterials
Volume32
Issue number21
DOIs
StatePublished - Jul 2011

Bibliographical note

Funding Information:
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology ( 2009-0072986 ). This research was supported by the R&D Program of MKE/KEIT ( 10035159 ). This research was supported by the Converging Research Center Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology ( 2009-0081871 ).

Keywords

  • Hyaluronic acid
  • Liver cirrhosis
  • Polyethyleneimine
  • SiRNA
  • Targeted systemic delivery

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