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Sub-classification of exosome based on the superficial chemical structure

Research Project

Project/Area Number 20K20567
Research Category

Grant-in-Aid for Challenging Research (Pioneering)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 37:Biomolecular chemistry and related fields
Research InstitutionKyoto University

Principal Investigator

Kubo Takuya  京都大学, 工学研究科, 准教授 (20374994)

Co-Investigator(Kenkyū-buntansha) 佐藤 雄介  東北大学, 理学研究科, 准教授 (90583039)
Project Period (FY) 2020-07-30 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥25,870,000 (Direct Cost: ¥19,900,000、Indirect Cost: ¥5,970,000)
Fiscal Year 2022: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2021: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2020: ¥15,990,000 (Direct Cost: ¥12,300,000、Indirect Cost: ¥3,690,000)
Keywordsスポンジモノリス / エクソソーム / コロナウイルス / クロマトグラフィー / 固相抽出 / レクチン / 糖鎖 / プロテオーム / ヘリックスペプチド / 分離 / 表面化学
Outline of Research at the Start

多孔性の分離剤(SPM) に対して,エクソソーム特有の高曲率脂質二重膜を認識する両親媒性α-helix ペプチド,タンパク質及び糖鎖に対するモノクローナル抗体及びレクチンをそれぞれ固定化し,細胞培養液中からのエクソソームの包括的分離及び個々のタンパク質/糖鎖に基づくサブクラス分離を達成する。さらに,サブクラス分離の細分化を目指し,SPM 骨格に対して高分子合成手法に基づく分子認識膜 (MIP) を構築し, MIP被覆型モノリス作製及びスポンジモノリス形体の広範化と実試料での実証を行う

Outline of Final Research Achievements

We focused on the specific separation of glycoproteins by the recognition of sugar chains using a spongy monolith (SPM) as a separation medium. As a fundamental study, we prepared SPMs modified with a few lectins for lectin affinity chromatography (LAC). After packing the modified SPM into the column, the adsorption selectivity due to the lectin affinity was evaluated. Additionally, the collecting procedures were also optimized by changing the elution conditions.
Additionally, new SPMs were developed for the separation of an extracellular vesicle, exosome and a corona virus, SARS-CoV-2. In former case, the specific lectins were immobilized onto a SPM and the selective separation of exosomes were successfully achieved. In case of the virus separation, an antibody was modified onto a SPM for the selective adsorption of a spike protein on SARS-CoV-2. Then, we finally achieved to selective concentration of SARS-CoV-2 from a pseudo salivary sample.

Academic Significance and Societal Importance of the Research Achievements

今後,同手法を用いることで,エクソソームの構造解析や機能解明が加速し,また,細胞培養液あるいは種々の生体試料中からの効率的なエクソソーム分離技術開発を促進することが期待できる。さらに,本法はエクソソームにとどまらず,ウイルス等の生体関連ナノ粒子の分離に好適である。本材料は,通常の硬質の分離基材とは異なり,極めて柔軟性の高い材料であることから,ニーズに応じた形状、サイズの分離場を構築することが容易であり,今後,ユニバーサルデザイン性を利用した様々な応用研究並びに実用化が期待される。

Report

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

    (9 results)

All 2023 2022 2021 2020

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (7 results) (of which Int'l Joint Research: 3 results,  Invited: 2 results)

  • [Journal Article] Classification of Extracellular Vesicles Based on Surface Glycan Structures by Spongy-like Separation Media2022

    • Author(s)
      Kanao Eisuke、Wada Shuntaro、Nishida Hiroshi、Kubo Takuya、Tanigawa Tetsuya、Imami Koshi、Shimoda Asako、Umezaki Kaori、Sasaki Yoshihiro、Akiyoshi Kazunari、Adachi Jun、Otsuka Koji、Ishihama Yasushi
    • Journal Title

      Analytical Chemistry

      Volume: 94 Issue: 51 Pages: 18025-18033

    • DOI

      10.1021/acs.analchem.2c04391

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Development of Lectin-immobilized Spongy Monoliths for Sub-classification of Exosome2020

    • Author(s)
      久保拓也*, 加藤誠也, 下田麻子, 石川良賀, 澤田晋一, 佐々木善浩, 秋吉一成, 大塚浩二
    • Journal Title

      BUNSEKI KAGAKU

      Volume: 69 Issue: 12 Pages: 731-735

    • DOI

      10.2116/bunsekikagaku.69.731

    • NAID

      130008021447

    • ISSN
      0525-1931
    • Year and Date
      2020-12-05
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Innovative Separation Platform via Spongy Monoliths for Proteins, Antibodies, EVs, Viruses, and Cells2023

    • Author(s)
      Takuya Kubo
    • Organizer
      SLAS2023 International Conference and Exhibition
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 多孔性高分子カラム(スポンジモノリス)を用いた細胞外小胞及びコロナウイルスの選択的分離2022

    • Author(s)
      久保拓也,大塚浩二
    • Organizer
      第33回クロマトグラフィー科学会議
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Effective separation of exosomes based on surface species by spongy monolithic media2021

    • Author(s)
      Shuntaro WADA, Toyohiro NAITO, Takuya KUBO, Koji OTSUKA
    • Organizer
      Pacifichem2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] スポンジモノリスを用いたエクソソームの表面糖鎖構造に基づく選択的分離2021

    • Author(s)
      和田 峻太朗, 金尾 英佑, 久保 拓也, 足立 淳, 石濱 泰, 秋吉 一成, 大塚 浩二
    • Organizer
      第32回クロマトグラフィー科学会議
    • Related Report
      2021 Research-status Report
  • [Presentation] エクソソームの表面構造に 基づく選択的分離手法の開発2021

    • Author(s)
      和田 峻太朗,久保 拓也,秋吉 一成,大塚 浩二
    • Organizer
      第28回クロマトグラフィーシンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] Selective separation of an extracellular vesicle, exosome by recognition of surface sugar chains using a spongy monolith2021

    • Author(s)
      Takuya Kubo, Seiya Kato, Toyohiro Naito, Kazunari Akiyoshi, Koji Otsuka
    • Organizer
      Pacifichem2021
    • Related Report
      2021 Research-status Report
  • [Presentation] Rapid and Effective Separation of Targeting Proteins/Glycoproteins using a Macroporous Sponge Monolith in Liquid Chromatography2020

    • Author(s)
      Takuya Kubo, Tetsuya Tanigawa, Toyohiro Naito, Kazunari Akiyoshi, Koji Otsuka
    • Organizer
      Analyticon-2020, Virtual Meeting
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2020-08-03   Modified: 2024-01-30  

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