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Elucidation of unresolved anti-HIV mechanism of sulfated polysaccharides

Research Project

Project/Area Number 20K05612
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 35020:Polymer materials-related
Research InstitutionKitami Institute of Technology

Principal Investigator

Yoshida Takashi  北見工業大学, 工学部, 特任教授 (40166955)

Co-Investigator(Kenkyū-buntansha) 浅井 大輔  昭和薬科大学, 薬学部, 准教授 (10423485)
宮崎 健輔  北見工業大学, 工学部, 准教授 (50636610)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords硫酸化糖鎖 / 硫酸化アルキルオリゴ糖鎖 / ウイルス表皮タンパク質 / オリゴペプチド / 表面プラズモン共鳴(SPR)装置 / 動的光散乱(DLS)装置 / 長鎖アルキル鎖 / オリゴ糖鎖 / クリック反応 / リポソーム / 相互作用 / SPR / 硫酸化オリゴ糖鎖 / 抗ウイルス性
Outline of Research at the Start

本研究は、これまでの我々の研究を基盤として(1)硫酸化糖鎖と相互作用する可能性が高いHIV gp120のV3ループやC末端の長い約50アミノ酸配列を現有ペプチド固相合成装置で合成し、高い抗HIV性を持つカードラン硫酸との相互作用をSPRやDLS、高分解能NMR装置(600 MHz)などを用いて定量的に吸着阻害を解明、(2)硫酸化アルキルオリゴ糖鎖を新たに合成し、HIVgp120モデルリポソームとの相互作用をSPRやDLSなどで長鎖アルキル鎖の役割を定量的に解決する。本研究の次段階として体外でウイルスを吸着除去可能な硫酸化糖鎖医用材料化への研究に繋げる。

Outline of Final Research Achievements

Electrostatic interactions of oligopeptides from virus envelope glycoproteins with sulfated polysaccharides were investigated using SPR and DLS measurements. Sulfated polysaccharides interacted ionically with clustered and concentrated regions of basic amino acids on the envelope glycoproteins to prevent the infections to cells. Acidic and bulky amino acids inhibit in the electrostatic interactions.
Sulfated 1-alkyl-triazole-maltoheptaosides having potent anti-HIV activity were synthesized and subjected to SPR with liposomes to elucidate the cytotoxic mechanism. Nonsulfated and sulfated 1-alkyl-triazole-maltoheptaosides bearing a C18 alkyl chain showed the highest apparent association-rate constant and lowest dissociation-rate constant against liposomes, indicating that the alkyl groups bearing longer-chains interact tightly with the liposomes. The results suggest that the longer-chain alkyl groups penetrate into the lipid bilayer of MT-4 cells to induce cytotoxicity.

Academic Significance and Societal Importance of the Research Achievements

ウイルス表皮タンパク質中の感染に関係する領域のオリゴペプチドを合成し硫酸化糖鎖との相互作用をSPRやDLS装置を用いて測定し明らかにした。硫酸化アルキルオリゴ糖鎖の高い抗HIV性における長鎖アルキル鎖の役割は、ウイルスや細胞のモデルとしてリポソームとの相互作用をSPR、DLS、高分解能NMRなどにより定量的に調べた。
硫酸化糖鎖、硫酸化アルキルオリゴ糖鎖のHIV、デング熱ウイルス、インフルエンザウイルスなどの抗ウイルス活性発現メカニズムや細胞毒性メカニズムが明らかになり学術的意義は高い。また、ウイルス吸着性能を持つ不織布マスクやフィルター、生医学材料への応用も期待され社会的意義もある。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (7 results)

All 2023 2022 2020

All Journal Article (5 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 5 results,  Open Access: 2 results) Presentation (1 results) (of which Invited: 1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Synthesis and cytotoxic mechanism of sulfated alkyl oligosaccharides having potent anti-HIV activity2023

    • Author(s)
      Bai, Asai, Koshikawa, Takemura, Miyazaki, Yoshida
    • Journal Title

      J. Fiber Sci. Technol.

      Volume: 79 Pages: 101-111

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Evaluation of electrostatic interaction between sulfated polysaccharides and oligopeptides from viral envelope glycoproteins using surface plasmon resonance2023

    • Author(s)
      Tungalag, Ayiguli, Chaolumen, Asai, Koshikawa, Takemura, Miyazaki, Yoshida
    • Journal Title

      Carbohydr. Res.

      Volume: 530 Pages: 108815-108815

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Anti-HIV Mechanism of Sulfated Poly and Oligosaccharides2020

    • Author(s)
      T. Yoshida
    • Journal Title

      Journal of Fiber Science and Technology

      Volume: 76 Issue: 12 Pages: 387-402

    • DOI

      10.2115/fiberst.2020-0043

    • NAID

      130007970057

    • ISSN
      2189-7654
    • Year and Date
      2020-12-15
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Role of a long-chain alkyl group in sulfated alkyl oligosaccharides with high anti-HIV activity revealed by SPR and DLS2020

    • Author(s)
      Bai Mingxue, Bai Chaolumen, K. Miyazaki, Daisuke Asai, Hiromu Takemura, T. Yoshida
    • Journal Title

      Carbohydr. Polym.

      Volume: 245 Pages: 116518-116518

    • DOI

      10.1016/j.carbpol.2020.116518

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Elucidation of anti-HIV mechanism of sulfated cellobiose-polylysine dendrimers by SPR and DLS2020

    • Author(s)
      Song Weiyue, Li Yin, T. Kanamoto, D. Asai, H. Takemura, H. Nakashima, K. Miyazaki,T, Yoshida
    • Journal Title

      Carbohydr. Res.

      Volume: 495 Pages: 108084-108084

    • DOI

      10.1016/j.carres.2020.108084

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] インフルエンザウイルス吸着機能を持つ硫酸化糖鎖フィルター2020

    • Author(s)
      吉田 孝
    • Organizer
      機能紙研究会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Patent(Industrial Property Rights)] 特願2022

    • Inventor(s)
      西村 朱十、吉田 孝、宮崎健輔
    • Industrial Property Rights Holder
      西村 朱十、吉田 孝、宮崎健輔
    • Industrial Property Rights Type
      特許
    • Filing Date
      2022
    • Related Report
      2022 Annual Research Report

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Published: 2020-04-28   Modified: 2024-01-30  

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