• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

1994 Fiscal Year Final Research Report Summary

Application of biodegradable Nanoparticles coated with sugar-carrying polymer to targetted drug delivery

Research Project

Project/Area Number 05558108
Research Category

Grant-in-Aid for Developmental Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field Biomedical engineering/Biological material science
Research InstitutionTokyo Institute of Technology

Principal Investigator

AKAIKE Toshihiro  Tokyo Institute of Technology, Department of Biomolecular Engineering, Prof, 生命理工学部, 教授 (30101207)

Co-Investigator(Kenkyū-buntansha) WATANABE Yoshifumi  Tokyo Institute of Technology, Department of Biomolecular Engineering, Assistant, 生命理工学部, 助手 (40231013)
Project Period (FY) 1993 – 1994
Keywordscarbohydrates / PVLA / beta-galactose / asialoglycoprotein / nanoparticles / drug deliverry system / poly (lactic acid) / biodegradeble
Research Abstract

A novel method of preparing nanoparticles bearing high density carbohydrate chains on their surface was developed. Carbohydrate-bearing nanoparticles of poly (lactic acid) or polystirene were prepared by the solvent evaporation method using a carbohydrate-carrying polystirene derivative which served as both an emulsifier and a surface coating. The diameter of the obtained nanoparticles ranged from 80 to 300 nm depending on the concentration of the polystirene derivative. As the concentration of the polystirene derivatives increased the nanoparticle diameter decreased, indicating that the polystirene derivatives worked as an emulsifier. The obtained particles were specifically aggregated by carbohydrate-specific lectin, showing that the polystirene derivative was retained on the particle surfaces and expressed carbohydrate residues. The density of carbohydrates on the particle surfaces was determined to be 3-5 molecules per square nanometer. The particles prepared by the present method were stably dispersed and hardly aggregated in aqueous media during storage and centrifugal treatment compared with the post-coated particles that were prepared by adsorbing polystirene particles with the polystirene derivative. In vitro study with isolated rat hepatocytes revealed that surface carbohydrate chains were recognized by hepatocytes. Biomaterials (1994) 15, (13) 1035-1042

  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] A. MARUYAMA et al: "Preparation of nanoparticles bearing high-density carbohydrate chains using carbohydrate-carrying polymers as emulsifier" Biomaterials. 15. 1035-1042 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] N. ADACHI et al: "Cellular distribution of polymer particles bearing various densities of carbohydrate ligands" J. Biomater. Sci. Polymer Edn,. 6. 463-479 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Chong-Su CHO et al: "Synthesis of Poly (γ-benzyl L-glutamate) /Poly (ethylene oxide) Diblock Copolymer Endcapped with Sugar Moirty for Cell-Specific Biomaterials" Chem. Lett.1817-1820 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 後藤 光昭,赤池 敏宏: "人工臓器1994-1995" 中山書店, 312 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 赤池 敏宏,後藤 光昭,小林 明,小林 一清: "糖鎖と細胞" 日経サイエンス, 151 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.MARUYAMA et al: "Preparation of nanoparticles bearing high density carbohydrate chains using carbohydrate-carrying polymers as emulsifier" Biomaterials. (15). 1035-1042 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] N.ADACHI et al: "Cellular distribution of polymer particles bearing various densities of carbohydrate ligands" J.Biomater.sci.Polymer Edn. (6). 463-479 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Chong-Su CHO et al: "Synthesis of poly (gamma-benzylL-glutamate) /Poly (ethylene oxide) Diblock Copolymer Endcapped with Sugar Moiety for Cell-Specific Biomaterials" Chem.Lett.1817-1820 (1994)

    • Description
      「研究成果報告書概要(欧文)」より

URL: 

Published: 1996-04-15  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi