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

Developmental Research for Peptides Inducing Membrane Fusion between Liposomes and Cells

Research Project

Project/Area Number 06558116
Research Category

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

Allocation TypeSingle-year Grants
Research Field Biomedical engineering/Biological material science
Research InstitutionTOHOKU UNIVERSITY

Principal Investigator

OHKI Kazuo  Tohoku University, Graduate School of Science, Department of Physics, Professor, 大学院・理学研究科, 教授 (80115394)

Co-Investigator(Kenkyū-buntansha) KOBAYASHI Toshihide  Tohoku University, Graduate School of Science, Department of Physics, Associate, 大学院・理学研究科, 助教授 (60162004)
OHBA Tetsuhiko  Tohoku University, Graduate School of Science, Department of Physics, Research s, 大学院・理学研究科, 助手 (10250664)
Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥8,600,000 (Direct Cost: ¥8,600,000)
Fiscal Year 1995: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1994: ¥7,900,000 (Direct Cost: ¥7,900,000)
Keywordsmembrane fusion / carrier liposome / peptides / DSC / drug delivery system / target cell / phase transition / phospholipids / 担体リポソーム / リポソーム / 蛍光測定 / 細胞 / 医用工学
Research Abstract

Drug delivery system (DDS) is widely studied as a new therapy targeting cells. This research aims to provide peptides that induce membrane fusion between liposomes and a target cell. Differential scanning calorimetry (DSC) is used to detect membrane fusion since mixing of phospholipids accompanied with the fusion is reflected on the thermogram. Melittin, a bee venom peptide, manifested membrane fusion of iposomes between neutral phospholipid and acidic ones through its structure including two separated regions of hydrophobic and basic amino acids. Hemagglutinin is a protein of influenza virus which is responsible for membrane fusion in the process of viral infection. A region composed of 20 amino acids has membrane fusion activity in the hemagglutinin. And, the activity of synthetic peptides that mimic the 20 amino acids are investigated in a liposomal system containing two types of liposomes. One peptide in which glutamic acids are introduced is added to a preparation of phosphatidylcholine liposomes. And the other peptide in which lysines are introduced is added to another preparation of phosphatidylcholine liposomes. When these peptides are used, electrostatic interaction between the liposomes has induced membrane fusion effectively in both gel and fluid phases of liposomal membranes. At pH 5.0, glutamic acids in the peptide are protonated and changed to hydrophobic, and so under this condition effect of hydrophobic interaction on membrane fusion has been investigated. In this case, membrane fusion is much slower compared to the electrostatic case. However, addition of cholesterol to the phosphatidylcholine liposomes raises the rate of membrane fusion induced by hydrophobic interaction.

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (25 results)

All Other

All Publications (25 results)

  • [Publications] 安達 智宏: "Interdigitated Structure of Phospholipid-Alcobol System Studied by X-ray diffraction" Biophysical Journal. 68. 1850-1855 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 野澤 義則: "生体膜脂質の動的構造と情報交換" 油化学. 44. 721-729 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 小林俊秀: "膜脂質の非対称分布" 細胞工学. 14. 1289-1295 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 高橋 浩: "Structural and thermotropic Properties of Calcium-Dimyristoyl phosphatidic Acid and Neutral pH Conditions" Biophysical Journal. 69. 1464-1472 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 高橋 浩: "Structure and phase behavior of DMPA / (L-poly Lisine) system" Molecular Membrane Biology. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 田坂 恭嗣: "Targeted mutagenesis of acyl-lipid desaturases in Synechocystis : Evidence for the important roles of" EMBO Journal. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 遠藤高帆: "A chinese hamster ovary cell mutant resistant to phosphatidylserine is defective in eranebilayer" Experimental Cell Research. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 大木和夫: "籏野昌弘監修「新タンパク質応用工学」" フジ・テクノシステム, 950 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T.Adachi, H,Takahashi, K.Ohki and I.Hatta: "Interdigitated structure of phospholipid-alcohol system studied by X-ray diffraction" Biophys. J.68(5). 1850-1855 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] H.Takahashi, T.Yasue, K.Ohki and I.Hatta: "Strucural and thermotropic properties of calcium-dimyristoyl phosphatidic and complexes at acidic and neutral pH conditions" Biophys. J.69(10). 1464-1472 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Nozawa and K.Ohki: "Dynamic structure and signal transduction of biomembrane lipids (in Japanese)" Oil Chemistry. 44(10). 721-729 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T.Kobayashi, T.Endo and K.Ohki: "Asymmetric distribution of membrane lipids (in Japanese)" Cell Technology. 14(11). 1289-1295 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T.Endo and K.Ohki: "The construction of lipid asymmetry and its relation to the function in biomembranes (in Japanese)" Exper. Medicine. 14(14). 2070-2074 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T.Endo and K.Ohki: "Measurements of activities of flippase and endocytosis on a plasma membrane of CHO cells by processing the fluorescence microscopic images (in Japanese)" Membrane. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] H.Takahashi, T.Yasue, K.Ohki and I.Hatta: "Structure and phase behavior of dimyristoylphosphatidic acid/poly (L-lysine) systems" Molecular Membrane Biology. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Y.Tasaka, Z.Gombos, Y.Nishiyama, T.Ohba, K.Ohk I and N.Murata: "Targeted mutagenesis of acyl-lipid desaturases in Synechocystis : Evidence for the iportant roles of polyunsaturated membrane lipids in growth, respiration and photosynthesis" EMBO Journal. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T.Endo, T.Kobayashi and K.Ohki: "A chinese hamster ovary cell mutant resistant to phosphatidylserine is defective in transbilayr movement of cell surface phosphatidylserine" Experimental Cell Research. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 大木 和夫: "生体膜モデル系の熱測定による研究" 日本物理学会誌. 49. 369-373 (1994)

    • Related Report
      1995 Annual Research Report
  • [Publications] 安達 智宏: "Interdigituted Structure of Phospnolipid-Alcohul Systems Studied by X-ray Diffraction" Biophysical Journal. 68. 1850-1855 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 野澤 義則: "生体膜脂質の動的構造と情報交換" 油化学. 44. 721-729 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 小林 俊秀: "膜脂質の非対称分布" 細胞工学. 14. 1289-1295 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 高橋 浩: "Structural and Thermotropic Properties of Calcium-Dimyristoyl phosphatidic Acid Complexes at Acidic and Neutral pH Couditions" Biophysical Journal. 69. 1464-1472 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 大木 和夫: "籏野昌弘監修「新タンパク質応用工学」" フジ・テクノシステム, 950 (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 大木 和夫: "生体膜モデル系の熱物性測定による研究" 日本物理学会誌. 49. 369-373 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 大木 和夫: "新タンパク質応用工学" フジ・テクノシステム, (1995)

    • Related Report
      1994 Annual Research Report

URL: 

Published: 1994-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi