2010 Fiscal Year Final Research Report
Low invasive therapeutic system for vascular diseases by neovascular specific liposomes containing US-contrast gas
| Project/Area Number |
20300179
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Medical systems
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| Research Institution | Tokyo University of Pharmacy and Life Science |
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Principal Investigator |
NEGISHI Yoichi Tokyo University of Pharmacy and Life Science, 薬学部, 准教授 (50286978)
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| Co-Investigator(Renkei-kenkyūsha) |
ARAMAKI Yukihiko 東京薬科大学, 薬学部, 教授 (90138959)
MARUYAMA Kazuo 帝京大学, 薬学部, 教授 (30130040)
TAKAGI Norio 東京薬科大学, 薬学部, 准教授 (50318193)
TAKAHASHI Yoko (遠藤 葉子) 東京薬科大学, 薬学部, 助手 (30453806)
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| Research Collaborator |
TSUNODA YUKA 東京薬科大学, 薬学部, 大学院生
MATSUO KEIKO 東京薬科大学, 薬学部, 大学院生
DAIKI OMATA 東京薬科大学, 薬学部, 大学院生
HAMANO NOBUHITO 東京薬科大学, 薬学部, 大学院生
MATSUKI YUKI 東京薬科大学, 薬学部, 大学院生
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| Project Period (FY) |
2008 – 2010
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| Keywords | 新生血管 / 超音波造影ガス封入リポソーム / 超音波照射 / 遺伝子治療 |
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| Research Abstract |
Previously, we have developed polyethyleneglycol (PEG)-modified liposomes entrapping echo-contrast gas, Bubble liposomes (BLs), as a ultrasound-mediated gene delivery tool. In this study, to develop a peptide-modified BLs for angiogenic gene delivery, we prepared the AG73 peptide-modified BLs. AG73-BLs could strongly associate with the bFGF or VEGF-stimulated HUVEC and enhance the gene transfection efficiency into the HUVEC by the combination of US exposure. Furthermore, to make stablely pDNA/BLs complexes, we developed BLs containing DOTAP (DOTAP-BLs) as a cationic lipid and PEG. When bFGF-expressing plasmid DNA/DOTAP-BLs complexes were administrated into ischemic mice model via intravenously and ultrasound was immediately exposed to the ischemic site, the blood flowcould be recovered and angiogenic-related genes could be enhanced. These results suggest that AG73-BLs and DOTAP-BLs may be a useful tool for ultrasound-mediated gene delivery in an angiogenic gene therapy.
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Research Products
(21 results)
