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Biomedical approach of new materials with well-organized interfaces

Research Project

Project/Area Number 11694129
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Biomedical engineering/Biological material science
Research InstitutionThe University of Tokyo

Principal Investigator

KATAOKA Kazunori  Graduate School of Engineering, Professor, 大学院・工学系研究科, 教授 (00130245)

Co-Investigator(Kenkyū-buntansha) NAGASAKI Yukio  Science University of Tokyo, Department of Materials Science, Associate Professor, 基礎工学部, 助教授 (90198309)
Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥4,900,000 (Direct Cost: ¥4,900,000)
Fiscal Year 2000: ¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 1999: ¥2,600,000 (Direct Cost: ¥2,600,000)
KeywordsBlock copolymer / Poly(ethylene glycol) / Polylactide / Polymeric micelle / Core-shell structure / Biocompatibility / Surface coating / Protein adsorption / コアーシェル型超微粒子
Research Abstract

1) Nanostructure fabrication from block copolymers was carried out in this study. Particularly, novel approaches for the construction of functionalized poly(ethylene glycol) (PEG) layers on surfaces were focused to attain the specific adsorption of a target protein through a PEG-conjugated ligands with a minimal non-specific adsorption of other proteins. Further, surface organization of block copolymer micelles with cross-linking core was studied from a standpoint of the preparation of a new functional surface-coating with a unique macromolecular architecture. The micelle-attached surface and the thin hydrogel layer made by layered micelles exhibited nonfouling properties and worked as the reservoir for hydrophobic reagents. These PEG-functionalized surface in brush form or in micelle form can be used in diverse fields of medicine and biology to construct high-performance medical devices including scaffolds for tissue engineering and matrices for drug delivery systems.
2) Recently, coll … More oidal carrier systems have been receiving much attention in the field of drug targeting because of their high loading capacity for drugs as well as of their unique disposition characteristics in the body. This research project was aimed at the utility of polymeric micelles formed through the multimolecular assembly of block copolymers as novel core-shell typed colloidal carriers for drug and gene targeting. The process of micellization in aqueous milieu is studied in detail based on the differences in the driving force of core segregation, including hydrophobic interaction, electrostatic interaction, metal complexation, and hydrogen bonding of constituent block copolymers. The segregated core embedded in the hydrophilic palisade is shown to function as a reservoir for genes, enzymes, and a variety of drugs with diverse characteristics. Functionalization of the outer surface of the polymeric micelle to modify its physicochemical and biological properties is investigated from the standpoint of designing micellar carrier systems for receptor-mediated drug delivery. Further, the body distribution of polymeric micelles is studied to demonstrate their long-circulating characteristics and significant tumor accumulation, emphasizing their promising utility in tumortargeting therapy. As an important perspective on carrier systems based on polymeric micelles, their feasibility as nonviral gene vectors is also demonstrated in this study. Less

Report

(3 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • Research Products

    (30 results)

All Other

All Publications (30 results)

  • [Publications] Y.Akiyama, H.Otsuka, Y.Nagasaki, M.Kato, K.Kataoka: "Selective synthesis of heterobifuncitional poly(ethylene glycol) derivatives containing both mercapto and acetal terminals"Bioconjugate Chemistry. 11(6). 947-950 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] H.R.Stapert, N.Nishiyama, D.-L.Liang, T.Aida, K.Kataoka: "Polyion complex micelles encapsulating light-harvesting ionic dendrimer zinc porphyrins"Langmuir. 16(21). 8182-8188 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Akiyama, A.Harada, Y.Nagasaki, K.Kataoka: "Synthesis of poly(ethylene glycol)-block-poly(ethyleneimine) possessing an acetal group at the PEG end"Macromolecules. 33(16). 5841-5845 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] H.Otsuka, Y.Nakashima, Y.Nagasaki, M.Kato, K.Kataoka: "Novel approaches for the construction of cell specific surfaces using heterobifunctional poly(ethylene glycol) (PEG)"J. Photopolym. Sci. Tech.. 13(1). 25-28 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Emoto, Y.Nagasaki, K.Kataoka: "Core-shell structured hydrogel thin layer on surfaces by lamination of poly(ethylene glycol)-b-poly(D, L-lactide) micelle and polyallylamine"Langmuir. 16(13). 5738-5742 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] H.Otsuka, Y.Nagasaki, K.Kataoka: "Dynamic wettability study on the functionalized PEGylated layer on a polylactide surface constructed by the coating of aldehyde-ended poly(ethylene glycol) (PEG)/polylactide (PLA) block copolymer"Science and Technology of Advanced Materials. 1(1). 21-29 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Emoto, Y.Nagasaki, K.Kataoka: "Surface modification with polymeric micelles from poly(ethylene gylcol)-poly(D, L-lactide) block copolymers for the creation of high performance biomaterials"Biomaterials and Drug Delivery toward New Millenium. (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K. Emoto, Y. Nagasaki, M. Iijima, M. Kato, K. Kataoka: "Preparation of non-fouling surface through the coating with corepolymerized blockcopolymer micelles having aldehyde-ended PEG shell"Colloids Surf., B. 18(3, 4). 337-346 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K. Emoto, Y. Nagasaki, K. Kataoka: "A Core-Shell Structured Hydrogel Thin Layer on Surfaces by Lamination of a Poly(ethylene glycol)-b-poly(D, L-lactide) Micelle and Polyallylamine"Langmuir. 16(13). 5738-5742 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K. Emoto, M. Iijima, Y. Nagasaki, K. Kataoka: "Functionality of Polymeric Micelle Hydrogels with Organized Three-Dimensional Architecture on Surfaces"J. Am. Chem. Soc.. 122(11). 2653-2654 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] H. Otsuka, Y. Nagasaki, K. Kataoka: "Surface Characterization of Functionalized Polylactide through the Coating with Heterobifunctional Poly(ethylene glycol)/Polylactide Block Copolymers"Biomacromolecules. 1(1). 39-48 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y. Yamamoto, Y. Nagasaki, M. Kato, K. Kataoka: "Surface charge modulation of poly(ethylene glycol)-poly(D, L-lactide) block copolymer micelles : conjugation of charged peptides"Colloids Surf., B. 16(1-4). 135-146 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K. Yasugi, T. Nakamura, Y. Nagasaki, M. Kato, K. Kataoka: "Sugar-Installed Polymer Micelles : Synthesis and Micellization of Poly(ethylene glycol)-poly(D, L-lactide) Block Copolymers Having Sugar Groups at the PEG Chain End"Macromolecules. 32(24). 8024-8032 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y. Nagasaki, Y. Nakashima, R. Ogawa, M. Kato, H. Ohtsuka, K. Kataoka: "Surface plasma polymerization of poly(ethylene glycol) heterotelechelic macromonomers for construction of cell specific surface"J. Photopolym. Sci. Technol.. 12(1). 59-62 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K. Emoto, Y. Nagasaki, K. Kataoka: "Coating of Surfaces with Stabilized Reactive Micelles from Poly(ethylene glycol)-Poly(D, L- lactic acid) Block Copolymer"Langmuir. 15(16). 5212-5218 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M. Iijima, Y. Nagasaki, T. Okada, M. Kato, K. Kataoka: "Core-Polymerized Reactive Micelles from Heterotelechelic Amphiphilic Block Copolymers"Macromolecules. 32(4). 1140-1146 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Akiyama,H.Otsuka,Y.Nagasaki,M.Kato,K.Kataoka: "Selective synthesis of heterobifuncitional poly (ethylene glycol) derivatives containing both mercapto and acetal terminals"Bioconjugate Chemistry. 11(6). 947-950 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] H.R.Stapert,N.Nishiyama,D.-L.Liang T.Aida,K.Kataoka: "Polyion complex micelles encapsulating light-harvesting ionic dendrimer zinc porphyrins"Langmuir. 16(21). 8182-8188 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Y.Akiyama,A.Harada,Y.Nagasaki,K.Kataoka: "Synthesis of poly (ethylene glycol)-block-poly (ethyleneimine) possessing an acetal group at the PEG end"Macromolecules. 33(16). 5841-5845 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] H.Otsuka,Y.Nakashima,Y.Nagasaki,M.Kato,K.Kataoka: "Novel approaches for the construction of cell specific surfaces using heterobifunctional poly (ethylene glycol)(PEG)"J.Photopolym.Sci.Tech.. 13(1). 25-28 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] K.Emoto,Y.Nagasaki,K.Kataoka: "Core-shell structured hydrogel thin layer on surfaces by lamination of poly (ethylene glycol)-b-poly (D,L-lactide) micelle and polyallylamine"Lamgmuir. 16(13). 5738-5742 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] H.Otsuka,Y.Nagasaki,K.Kataoka: "Dynamic Wettability study on the functionalized PEGylated layer on a polylactide surface constructed by the coating of aldehyde-ended poly (ethylene glycol)(PEG)/polylactide (PLA) block copolymer"Science and Technology of Advanced Materials. 1(1). 21-29 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] K.Emoto,Y.Nagasaki,K.Kataoka: "Surface modification with polymeric micelles from poly (ethylene gylcol)-poly (D,L-lactide) block copolymers for the creation of high performance biomaterials"Biomaterials and Drug Delivery toward New Millenimn. 15 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] K.Emoto,M.Iijima,Y.Nagasaki,k.Kataoka: "Functionality of polymeric micelle hydrogel with organized three dimensional architecture on surface"J.Amer.Chem.Soc.. (In press).

    • Related Report
      1999 Annual Research Report
  • [Publications] H.Otsuka,Y.Nagasaki,K.Kataoka: "Functionalization of polylactide (PLA) surface using heterobifunctional poly (ethylene glycol) (PEG) /PLA block copolymer"Biomacromolecules. (In press).

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Emoto,Y.Nagasaki,M.Iijima,M.Kato,K.Kataoka: "Preparation of non-fouling surface through the coating with core-polymerized block copolymer micelles having aldehyde-ended PEG shell"Colloeds and Surfaces B : Biointerface. (In press).

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Yasugi,T.Nagasaki,M.Kato,K.Kataoka: "Sugar-installed Polymer Micelles : Synthesis and Micellization of Poly(ethylene glycol) - Poly(D,L-lactide) Block Copolymers Having Sugar Groups at PEG Chain End"Macromolecules. 32(24). 8024-8032 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Y.Yamamoto,Y.Nagasaki,M.Kato,K.Kataoka: "Surface charge modulation of poly(ethylene glycol)-poly(D,L-lactide) block copolymer micelles : Conjugation of charged peptides"Colloids and Surfaces B : Bionterfaces. 16(1-4). 135-146 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Emoto,Y.Nagasaki,K.Kataoka: "Coating of surfaces with stabilized reactive micelles from poly(ethylene glycol)-poly(D,L-lacticacid) block copolymer"Langmuir. 15(16). 5212-5218 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] H.Otsuka,Y.Nagasaki,K.Kataoka: "Novel approaches for the construction of functionalized poly(ethylene glycol) (PEG) layer on surfaces using heterobifunctional PEG/polylactide (PLA) block copolymers and their micelles"ACS Symposium Series,American Chemical Society (In press).

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2016-04-21  

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