| Project/Area Number |
23390014
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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 |
Physical pharmacy
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| Research Institution | Kyoto Pharmaceutical University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
TSUCHIY Hiroyuki 前京都薬科大学, 薬学部, 講師 (00403402)
HAMA Susumu 京都薬科大学, 薬学部, 講師 (60438041)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥18,720,000 (Direct Cost: ¥14,400,000、Indirect Cost: ¥4,320,000)
Fiscal Year 2013: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2012: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2011: ¥11,180,000 (Direct Cost: ¥8,600,000、Indirect Cost: ¥2,580,000)
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| Keywords | ナノDDS / 癌細胞間隙 / 癌微小環境 / 癌治療 / siRNA |
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| Research Abstract |
In this study, we attempted to develop a novel type worm-like DDS for overcoming drawbacks of conventional nanoDDS for anticancer therapy, such as, antigenicity of PEG, low cell affinity and low permeability into tumor tissue. As the results, we successfully developed charge-invertible liposomes, which can response to tumor microenvironment, and the capabilities of endosomal escape and cellular internalization and tumor accumulation comparable to PEG-liposomes were confirmed. Moreover, the worm-like nanostructures, which can penetrate into narrow space, were developed, and significantly high permeability into spheroids was achieved by improvement of physicochemical property of wick structure, modification with hyaluronidase and functional peptides. Then, integration of those functional liposomes, and evaluation of in vivo functionality was started.
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