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2009 Fiscal Year Annual Research Report

生体内環境耐性と応答性を兼備したリピド被覆型高分子ミセルドラッグ

Research Project

Project/Area Number 21655039
Research InstitutionThe University of Tokyo

Principal Investigator

片岡 一則  The University of Tokyo, 大学院・工学系研究科, 教授 (00130245)

Co-Investigator(Kenkyū-buntansha) 西山 伸宏  東京大学, 大学院・医学系研究科, 准教授 (10372385)
Keywordsドラッグデリバリー / 高分子ミセル / リポソーム / がん治療 / MRI
Research Abstract

ポリエチレングリコール-ポリグルタミン酸(PEG-P(Glu)ブロック共重合体の合成を行い、制がん剤シスプラチン(CDDP)と反応させることによって、粒径34nmのCDDP内包ミセルを調製した。次に、リン脂質とコレステロールをベンゼン凍結乾燥したフラスコ中にCDDP内包ミセル水溶液を加え、撹拌と超音波処理を行った後、エクストルーダーでサイジングを行うことによって、CDDP内包ミセルが内包されたリポソーム(リピド被覆型高分子ミセル)を調製した。調製したリピド被覆型高分子ミセルの動的光散乱を行った結果、粒径は99nmであり非常に狭い粒径分布(polydispersity index=0.102)を有することが明らかになった。次に、リピド被覆型高分子ミセルの機能評価として、生理食塩水中におけるCDDPのリリース速度を評価した。その結果、リピド被覆型高分子ミセルによって、ミセルからのCDDPのリリースが抑制されることが明らかになった。この結果より、リピド被覆型高分子ミセルの構築によって、CDDP内包ミセルの血中での安定性を高めることができるものと考えられる。一方、リピド被覆型高分子ミセルの新しい展開として、MRI造影剤であるGd-DPTAを内包した高分子ミセルを内包したリポソームを構築した。これまでにGd-DPTA内包ミセルは、Gd-DPTA単独と比較して20倍のT1緩和能を有することが明らかになっていたが、生理食塩水中ではミセルの崩壊によってT1緩和能が著しく減少することが問題であった。そこで、本研究では、Gd-DPTA内包ミセルを搭載したリピド被覆型高分子ミセルを構築したところ、生理食塩水中においても緩和能が変化しないことが明らかになった。本システムは、微小がんの検出のためのナノ粒子型MRI造影剤としての応用が期待される。

  • Research Products

    (35 results)

All 2010 2009 Other

All Journal Article (16 results) (of which Peer Reviewed: 16 results) Presentation (17 results) Remarks (1 results) Patent(Industrial Property Rights) (1 results) (of which Overseas: 1 results)

  • [Journal Article] pDNA/poly(L-lysine)polyplexes functionalized with a pH-sensitive charge-conversional poly(aspartamide)derivative for controlled genedelivery to human umbilical vein endothelial cells2010

    • Author(s)
      M.Sanjoh, K.Kataoka, et al.
    • Journal Title

      Macromol.Rapid Commun. (in press, 掲載確定)

    • Peer Reviewed
  • [Journal Article] Antiangiogenic gene therapy of experimental pancreatic tumor by sFlt-1 plasmid DNA carried by RGD-modified crosslinked polyplex micelles.2010

    • Author(s)
      Y.Vachutinsky, K.Kataoka, et al.
    • Journal Title

      J.Control.Release (in press, 掲載確定)

    • Peer Reviewed
  • [Journal Article] Introduction of stearoyl moieties into a biocompatible cationic polyaspar tamide derivative, PAsp(DET), with endosomal escaping function for enhanced siRNA-mediated gene knockdown.2010

    • Author(s)
      H.Kim, K.Kataoka, et al.
    • Journal Title

      J.Control.Release (in press, 掲載確定)

    • Peer Reviewed
  • [Journal Article] Enhanced transfection with silica-coated polyplexes loading plasmid DNA.2010

    • Author(s)
      K.Miyata, K.Kataoka, et al.
    • Journal Title

      Biomaterials 31

      Pages: 4764-4770

    • Peer Reviewed
  • [Journal Article] Biodegradable polyamino acid-based polycations as safe and effective gene carrier minimizing cumulative toxicity.2010

    • Author(s)
      K.Itaka K.Kataoka, et al.
    • Journal Title

      Biomaterials 31

      Pages: 3707-3714

    • Peer Reviewed
  • [Journal Article] Polyplex nanomicelle promotes hydrodynamic gene introduction to skeletal muscle.2010

    • Author(s)
      K.Itaka K.Kataoka, et al.
    • Journal Title

      J.Control.Release 143

      Pages: 112-119

    • Peer Reviewed
  • [Journal Article] Antiangiogenic gene therapy of solid tumor by systemic injection of polyplex micelles loading plasmid DNA encoding soluble Flt-12010

    • Author(s)
      M.Oba, K.Kataoka, et al.
    • Journal Title

      Molecular Pharmaceutics 7

      Pages: 501-509

    • Peer Reviewed
  • [Journal Article] siRNA-based therapy ameliorates glomerulonephritis.2010

    • Author(s)
      H.Shimizu K.Kataoka, et al.
    • Journal Title

      J.Am.Soc.Nephrol. 21

      Pages: 622-633

    • Peer Reviewed
  • [Journal Article] Efficient delivery of bioactive antibodies into the cytoplasm of living cells by charge-conversional polyion complex micelles.2010

    • Author(s)
      Y.Lee, K.Kataoka, et al.
    • Journal Title

      Angew.Chem.Int.Ed. 49

      Pages: 2552-2555

    • Peer Reviewed
  • [Journal Article] Versatile and selective synthesis of"Click Chemistry"compatible heterobifunctional poly(ethylene glycol)s possessing azide and alkyne functionalities.2010

    • Author(s)
      S.Hiki, K.Kataoka, et al.
    • Journal Title

      Bioconjugate Chem. 21

      Pages: 248-254

    • Peer Reviewed
  • [Journal Article] Spontaneous formation of nanosized unilamellar polyion complex vesicles with tunable size and properties.2010

    • Author(s)
      Y.Anraku, K.Kataoka, et al.
    • Journal Title

      J.Am.Chem.Soc. 132

      Pages: 1631-1636

    • Peer Reviewed
  • [Journal Article] Enhanced magnetic resonance imaging of experimental pancreatic tumor in vivo by block-copolymer-coated magnetite nanoparticles combined with TGF-beta inhibitor.2009

    • Author(s)
      M.Kumagai, K.Kataoka, et al.
    • Journal Title

      J.Control.Release 140

      Pages: 306-311

    • Peer Reviewed
  • [Journal Article] PEGylated calcium phosphate nanocomposites as smart environment-sensitive carriers for siRNA delivery2009

    • Author(s)
      M.Zhang, K.Kataoka, et al.
    • Journal Title

      Adv.Mater. 21

      Pages: 3520-3525

    • Peer Reviewed
  • [Journal Article] Enhanced percolation and gene expression in tumor hypoxia by PEGylated polyplex micelles.2009

    • Author(s)
      M.Han, K.Kataoka, et al.
    • Journal Title

      Mol.Ther. 17

      Pages: 1404-1410

    • Peer Reviewed
  • [Journal Article] Intratracheal gene transfer of adrenomedullin using polyplex nanomicelles attenuates monocrotaline-induced pulmonary hypertension in rats.2009

    • Author(s)
      M.Harada-Shiba, K.Kataoka, et al.
    • Journal Title

      Molecular Ther. 17

      Pages: 1180-1186

    • Peer Reviewed
  • [Journal Article] Charge-conversional polyionic complex micelles-efficient nanocarriers for protein delivery into cytoplasm.2009

    • Author(s)
      Y.Lee, K.Kataoka, et al.
    • Journal Title

      Angew.Chem.Int.Ed. 48

      Pages: 5309-5312

    • Peer Reviewed
  • [Presentation] Block copolymer micelles and vesicles as nanocarriers for gene and drug delivery2009

    • Author(s)
      片岡一則
    • Organizer
      The 10th US-Japan symposium on Drug Delivery System
    • Place of Presentation
      Lahaina, Maui, Hawaii, USA
    • Year and Date
      2009-12-16
  • [Presentation] 高分子が先導するナノバイオテクノロジー~ピンポイント診断・治療のたあの高分子ナノデバイス設計~2009

    • Author(s)
      片岡一則
    • Organizer
      第18回ポリマー材料フォーラム
    • Place of Presentation
      タワーホール船堀、東京
    • Year and Date
      2009-11-26
  • [Presentation] Supramoleuclar Nanodevises for Nucleic Acid Delivery2009

    • Author(s)
      片岡一則
    • Organizer
      Joint Symposium of the 5th Annual Meeting of the Oligonucleotide Therapeutics Society and the 19th Antisense Symposium
    • Place of Presentation
      Centennial Hall, Kyushu University Hospital Campus, Fukuoka, Japan
    • Year and Date
      2009-11-03
  • [Presentation] Supramoleuclar Nanodevices from Block Copolymers for Smart Molecular Therapy2009

    • Author(s)
      片岡一則
    • Organizer
      2nd Aquitane Conference on Polymers
    • Place of Presentation
      Palais des Congres, Arcachon, France
    • Year and Date
      2009-10-13
  • [Presentation] Supramoleuclar Nanocarriers for Gene and Drug Delivery2009

    • Author(s)
      片岡一則
    • Organizer
      1st Annual Conference of the American Society for Nanomedicine
    • Place of Presentation
      Bolger Center, Potomac, Maryland, USA
    • Year and Date
      2009-10-13
  • [Presentation] Supra-moleuclar Structures as Nanodevices in Gene and Drug Delivery~Challenges to Smart Molecular Therapy~2009

    • Author(s)
      片岡一則
    • Organizer
      The Norman Bethune International Medical Forum 2009 & 70th Anniversary Celebration for Former Norman Bethune University of Medical Sciences
    • Place of Presentation
      Changchun, China
    • Year and Date
      2009-09-23
  • [Presentation] 健康サスティナブル社会を先導するナノバイオマテリアル~ビンポイントDDSへの展開~2009

    • Author(s)
      片岡一則
    • Organizer
      第58回高分子討論会
    • Place of Presentation
      熊本大学工学部黒髪地区、熊本
    • Year and Date
      2009-09-16
  • [Presentation] Supra-molecular Nanocarriers for Gene and Drug Delivery2009

    • Author(s)
      片岡一則
    • Organizer
      2nd Swiss-Japanese Symposium on Bionanotechnology
    • Place of Presentation
      Aigle Castle, Switzerland
    • Year and Date
      2009-09-09
  • [Presentation] Supramoleuclar Nanocarriers for Gene and Drug Delivery~Challenges to Intracellular Nanomedicine~2009

    • Author(s)
      片岡一則
    • Organizer
      22nd European Conference on Biomaterials
    • Place of Presentation
      Lausanne, Switzerland
    • Year and Date
      2009-09-07
  • [Presentation] Nanotherapeutics through Polymer Chemistry~Supra-molecular Nanocarriers for Gene and Drug Delivery~2009

    • Author(s)
      片岡一則
    • Organizer
      2nd TERMIS World Congress
    • Place of Presentation
      Lotte Hotel World, Seoul. Korea
    • Year and Date
      2009-08-31
  • [Presentation] Supra-macromoleuclar Nanodevices for Smart Molecular Therapy2009

    • Author(s)
      片岡一則
    • Organizer
      73rd Prague Meeting on Macromolecules
    • Place of Presentation
      Prague, Czech Republic
    • Year and Date
      2009-07-05
  • [Presentation] Nanotherapeutics through Polymer Chemistry : Supra-molecular Nanocarriers for Gene and Drug Delivery2009

    • Author(s)
      片岡一則
    • Organizer
      34th FEBS Congress
    • Place of Presentation
      Prague, Czech Republic
    • Year and Date
      2009-07-04
  • [Presentation] ポリエチレングリコール-ポリアミノ酸ブロック共重合体を基盤とする高分子ミセル型DDSの開発2009

    • Author(s)
      片岡一則
    • Organizer
      第25回日本DDS学会学術集会
    • Place of Presentation
      東京ドームホテル、東京
    • Year and Date
      2009-07-03
  • [Presentation] Importance of Nanotechnology in Healthcare in the 21st Century-The Japanese Perspective~Towards Smart Molecular Therapy~2009

    • Author(s)
      片岡一則
    • Organizer
      2nd ESF/UB European Summer School in Nanomedicine
    • Place of Presentation
      Quinta da Marinha, Cascais, Lisbon, Portugal
    • Year and Date
      2009-06-12
  • [Presentation] Supramoleular Assemblies of Smart Block Copolymers as Nanocarriers for Gene and Drug Delivery2009

    • Author(s)
      片岡一則
    • Organizer
      International Symposium Celebrating the 50th Anniversary of the Journal"Polymer"
    • Place of Presentation
      The Congress Centrum Mainz, Mainz, Germany
    • Year and Date
      2009-06-07
  • [Presentation] Smart Nanocarrier Systems for Targeted Drug and Gene Delivery~A Future for the Pharmaceutical Industry~2009

    • Author(s)
      片岡一則
    • Organizer
      2nd European Conference for Clinical Nanomedicine
    • Place of Presentation
      Messe Schweiz, Hall l'Entree, Basel, Switzerland
    • Year and Date
      2009-04-27
  • [Presentation] Supramolecular Structures as Carriers in Gene and Drug Delivery~Challenge to Smart Molecular Therapy~2009

    • Author(s)
      片岡一則
    • Organizer
      Biomaterials Asia 2009
    • Place of Presentation
      Regal Airport Hotel, Hong Kong, China
    • Year and Date
      2009-04-05
  • [Remarks]

    • URL

      http://www.bmw.t.u-tokyo.ac.jp/

  • [Patent(Industrial Property Rights)] Size Controlled Micelle of Plutinum Coordination Complex2009

    • Inventor(s)
      片岡一則, 他3名
    • Industrial Property Rights Holder
      東京大学
    • Industrial Property Number
      米国仮出願 61/225716
    • Filing Date
      2009-07-16
    • Overseas

URL: 

Published: 2011-06-16   Modified: 2016-04-21  

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