Significant and prolonged antisense effect of a multifunctional envelope-type nano device encapsulating antisense oligodeoxynucleotide
スポンサーリンク
概要
- 論文の詳細を見る
A multifunctional envelope-type nano device (MEND) was developed for use as an efficient non-viral system for the delivery of plasmid DNA (pDNA) using octaarginine (R8) as an internalizing ligand. Three types of R8-MENDs were prepared, co-encapsulating luciferase-encoding pDNA and antiluciferase oligodeoxynucleotide (ODN) condensed by three polycations, stearyl octaarginine (STR-R8), poly-L-lysine (PLL) and protamine, and the antisense effects of the ODN-encapsulated R8-MENDs (ODN-MEND) were analysed in-vitro. The ODN-MEND packaged using protamine as a condenser showed a 90% antisense effect 16 h after the transfection, and a persistent antisense effect of over 75% for up to 48 h, which was much more effective than that of LipofectAmine2000. On the other hand, the ODN-MENDs prepared using PLL and STR-R8 as condensers did not show any significant inhibition of luciferase activity. Although there was no specific relation between the physicochemical characteristics of the ODN-MENDs and their antisense effect, the pattern of the antisense effect among the ODN-MENDs was similar to that of the silencing effect of R8-MEND encapsulating plasmid DNA encoding siRNA. These results suggest that R8-MENDs are able to deliver encapsulated DNA to the cytosol as well as to the nucleus, and that protamine can also function as an efficient decondenser, not only in the nucleus but also in the cytosol. In conclusion, we successfully developed an ODN-MEND with a high antisense effect using protamine as a DNA condensing as well as a decondensing agent.
- Royal Pharmaceutical Society of Great Britainの論文
著者
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原島 秀吉
北大院・薬学研究科
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Yamada Yuma
Lab. For Molecular Design Of Pharmaceutics Fac. Of Pharmaceutical Sciences Hokkaido Univ.
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Yamada Yuma
Laboratory For Molecular Design Of Pharmaceutics Faculty Of Pharmaceutical Sciences Hokkaido Univers
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Kogure Kentaro
Dep. Of Biophysical Chemistry Kyoto Pharmaceutical Univ.
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Futaki Shiroh
Institute For Chemical Research Kyoto University:presto Japan Science And Technology Agency (jst)
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山田 勇磨
北海道大学大学院薬学研究科薬剤分子設計学分野
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Kogure Kentaro
Kyoto Pharmaceutical University
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