S-Space College of Veterinary Medicine (수의과대학) Dept. of Veterinary Medicine (수의학과) Journal Papers (저널논문_수의학과)
Chitosan-graft-polyethylenimine for Akt1 siRNA delivery to lung cancer cells
- Jere, Dhananjay; Jiang, Hu-Lin; Kim, You-Kyoung; Arote, Rohidas; Choi, Yun-Jaie; Yun, Cheol-Heui; Cho, Myung-Haing; Cho, Chong-Su
- Issue Date
- International Journal of Pharmaceutics, Vol.378 No.1-2, pp.194-200
- Polymeric carrier; Non-viral vector; SiRNA delivery; Akt; Chitosan; Polyethylenimine; Lung cancer
- Efficient delivery of small interfering RNA (siRNA) remains a challenging task in RNA interference (RNAi) studies. In this study, we used chitosan-graft-polyethylenimine (CHI-g-PEI) copolymer composed of chitosan and low molecular weight polyethylenimine (PEI) for the delivery of siRNA. The CHI-g-PEI carrier formed stable complexes with siRNA with compact spherical morphology. CHI-g-PEI delivered EGFP siRNA (siGFP) silenced EGFP expression nearly 2.5 folds higher than PEI25K at 50 pM siGFP concentration. Cell viability was found to be 2 folds high with CHI-g-PEI carrier than PEI25K. Also, our CHI-g-PEI carrier efficiently delivered Akt1 siRNA (siAkt) and thereby silenced onco-protein Akt1. Silencing of this crucial cell survival protein significantly reduced the lung cancer cell survival and proliferation. Additionally, Akt1 protein knock-down decreased A549 cell malignancy and metastasis. These findings suggest that the CHI-g-PEI carrier efficiently and safely delivered siRNA. Moreover, CHI-g-PEI mediated Akt1 siRNA delivery may immerge as a viable approach for lung cancer treatment. (C) 2009 Elsevier B.V. All rights reserved.
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