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Elucidation of exosome secretion mechanism by a novel exosome analytical method

Research Project

Project/Area Number 20H02766
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 34020:Analytical chemistry-related
Research InstitutionOkayama University

Principal Investigator

KANETA Takashi  岡山大学, 自然科学学域, 教授 (20243909)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2022: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000)
Fiscal Year 2020: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Keywordsエキソソーム / レーザー励起蛍光法 / 放出機構 / 抗原抗体反応 / 高感度分析 / CD63 / CD40 / キャピラリー電気泳動 / がん細胞
Outline of Research at the Start

エキソソームは細胞間のコミュニケーション、がん転移に関連し、がんのバイオマーカーとしての利用やその機能解明が期待されているが、その放出機構は明らかではない。放出機構解明における困難は、従来のエキソソーム計測法では多量の試料が必要であり、測定に長時間を要することにある。そこで本研究では、新たに開発した高感度エキソソーム計測装置を利用して、エキソソーム放出に影響を与える様々因子について検討し、その放出機構を解明する。この測定装置の特徴は、極微量の試料中の個々のエキソソームを計数できる点にあり、これを利用することでエキソソーム放出に関する新しい知見を得ることができる。

Outline of Final Research Achievements

Exosomes are membrane vesicles with a diameter of 30-100 nm that are released from cells. They are involved in intercellular communication and cancer metastasis, and their utilization as cancer biomarkers and the elucidation of their functions are expected. Therefore, there is a demand for methods that can measure exosomes with high sensitivity and selectivity. This study aims to extract factors that are expected to influence exosome release from cancer cells and elucidate their effects on exosome release. The following aspects were investigated: (1) efficient capture of exosomes using optical trapping, (2) control of release amount through pH changes, (3) improvement of the instrument for the exosome measurements, and (4) fluorescent labeling of exosomes using click chemistry.

Academic Significance and Societal Importance of the Research Achievements

本研究は新規エキソソーム計測装置を開発するとともに、開発した装置を用いてエキソソームの放出機構の解明を目指した研究である。得られた成果はエキソソーム放出が種々の外部因子によって制御されていることを示し、これらの知見はがんの研究における新しい知見をもたらすものである。また、本研究で開発した装置は、従来、困難であった細胞培養培地中のエキソソームを直接計測できるため、今後のエキソソーム研究の発展に大きく貢献できる成果である。

Report

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

    (36 results)

All 2023 2022 2021 2020 Other

All Int'l Joint Research (2 results) Journal Article (16 results) (of which Int'l Joint Research: 7 results,  Peer Reviewed: 16 results,  Open Access: 2 results) Presentation (17 results) (of which Int'l Joint Research: 2 results,  Invited: 8 results) Book (1 results)

  • [Int'l Joint Research] Addis Ababa University(エチオピア)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Mahidol University(タイ)

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Trace nickel analysis in water samples via paper-based devices coupled with co-precipitation2023

    • Author(s)
      Abdellah Muhammed, Ahmed Hussen, Takashi Kaneta
    • Journal Title

      South African Journal of Chemistry

      Volume: 77 Pages: 1-7

    • DOI

      10.17159/0379-4350/2023/v77a01

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Development of Pipetteless Paper-Based Analytical Devices with a Volume Gauge2023

    • Author(s)
      Danchana Kaewta, Iwasaki Hiroshi, Thayawutthikun Yada, Saetear Phoonthawee, Kaneta Takashi
    • Journal Title

      ACS Omega

      Volume: 8 Issue: 12 Pages: 11213-11219

    • DOI

      10.1021/acsomega.2c08138

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Optical collection of extracellular vesicles in a culture medium enhanced by interactions with gold nanoparticles2022

    • Author(s)
      Tani Yumeki, Ochiai Kenta, Kaneta Takashi
    • Journal Title

      Analytical Sciences

      Volume: online Issue: 5 Pages: 643-651

    • DOI

      10.1007/s44211-022-00207-2

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Determination of glutamate using paper-based microfluidic devices with colorimetric detection for food samples2022

    • Author(s)
      Danchana Kaewta, Iwasaki Hiroshi, Ochiai Kenta, Namba Haruka, Kaneta Takashi
    • Journal Title

      Microchemical Journal

      Volume: 179 Pages: 107513-107513

    • DOI

      10.1016/j.microc.2022.107513

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dip-and-Read, Organic Solvent-Compatible, Paper-Based Analytical Devices Equipped with Chromatographic Separation for Indole Analysis in Shrimp2022

    • Author(s)
      Seetasang Sasikarn、Kaneta Takashi
    • Journal Title

      ACS Sensors

      Volume: 7 Issue: 4 Pages: 1194-1200

    • DOI

      10.1021/acssensors.2c00300

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Microfluidic Paper Based Analytical Devices for the Detection of Carbamate Pesticides2022

    • Author(s)
      Beshana Sheleme, Hussen Ahmed, Leta Seyoum, Kaneta Takashi
    • Journal Title

      Bulletin of Environmental Contamination and Toxicology

      Volume: 109 Issue: 2 Pages: 344-351

    • DOI

      10.1007/s00128-022-03533-3

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Dispersive liquid?liquid microextraction coupled with microfluidic paper-based analytical device for the determination of organophosphate and carbamate pesticides in the water sample2022

    • Author(s)
      Beshana Sheleme, Hussen Ahmed, Leta Seyoum, Kaneta Takashi
    • Journal Title

      Analytical Sciences

      Volume: 38 Issue: 10 Pages: 1359-1367

    • DOI

      10.1007/s44211-022-00167-7

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] N-Benzoyl leucomethylene blue as a novel substrate for the assays of horseradish peroxidase by spectrophotometry and capillary electrophoresis?laser-induced fluorometry2022

    • Author(s)
      Ren Jianchao、Kaneta Takashi
    • Journal Title

      Analytical Sciences

      Volume: XX Issue: 4 Pages: 651-655

    • DOI

      10.1007/s44211-022-00078-7

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Remote Investigation of Total Chromium Determination in Environmental Samples of the Kombolcha Industrial Zone, Ethiopia, Using Microfluidic Paper-based Analytical Devices2021

    • Author(s)
      MUHAMMED Abdellah、HUSSEN Ahmed、REDI Mesfin、KANETA Takashi
    • Journal Title

      Analytical Sciences

      Volume: 37 Issue: 4 Pages: 585-592

    • DOI

      10.2116/analsci.20P325

    • NAID

      130008023555

    • ISSN
      0910-6340, 1348-2246
    • Year and Date
      2021-04-10
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Microfluidic Paper-based Analytical Devices Coupled with Coprecipitation Enrichment Show Improved Trace Analysis of Copper Ions in Water Samples2021

    • Author(s)
      Muhammed Abdellah, Hussen Ahmed, Kaneta Takashi
    • Journal Title

      Analytical Sciences

      Volume: advpub Issue: 0 Pages: 123-130

    • DOI

      10.2116/analsci.21P215

    • NAID

      130008079147

    • ISSN
      0910-6340, 1348-2246
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Speciation of chromium in water samples using microfluidic paper-based analytical devices with online oxidation of trivalent chromium2021

    • Author(s)
      Muhammed Abdellah、Hussen Ahmed、Kaneta Takashi
    • Journal Title

      Analytical and Bioanalytical Chemistry

      Volume: 413 Issue: 12 Pages: 3339-3347

    • DOI

      10.1007/s00216-021-03274-y

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Simultaneous separation of 17 anions by capillary electrophoresis with the addition of an organic solvent2021

    • Author(s)
      Hata Kazuki、Nonaka Noriko、Sato Nobuyuki、Kaneta Takashi
    • Journal Title

      ELECTROPHORESIS

      Volume: 42 Issue: 12-13 Pages: 1317-1322

    • DOI

      10.1002/elps.202100014

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Portable two-color photometer based on paired light emitter detector diodes and its application to the determination of paraquat and diquat2021

    • Author(s)
      Seetasang Sasikarn、Kaneta Takashi
    • Journal Title

      Microchemical Journal

      Volume: 171 Pages: 106777-106777

    • DOI

      10.1016/j.microc.2021.106777

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Coalescence of Oil Droplets and Collection of Vesicles by Optical Pressure2020

    • Author(s)
      谷 夢希,金田 隆
    • Journal Title

      BUNSEKI KAGAKU

      Volume: 69 Issue: 12 Pages: 665-672

    • DOI

      10.2116/bunsekikagaku.69.665

    • NAID

      130008021472

    • ISSN
      0525-1931
    • Year and Date
      2020-12-05
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Direct Counting of Exosomes in a Cell Culture Medium Using Neither Isolation Nor Preconcentration2020

    • Author(s)
      Tatsuya Fujii, Takashi Kaneta
    • Journal Title

      Analytica Chimica Acta

      Volume: 1119 Pages: 35-40

    • DOI

      10.1016/j.aca.2020.04.052

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On-site analysis of paraquat using a completely portable photometric detector operated with small, rechargeable batteries2020

    • Author(s)
      Sasikarn Seetasang, Takashi Kaneta
    • Journal Title

      Analytica Chimica Acta

      Volume: 1135 Pages: 99-106

    • DOI

      10.1016/j.aca.2020.08.051

    • NAID

      120007144323

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] レーザー励起蛍光検出法によるエキソソーム計測2022

    • Author(s)
      金田 隆
    • Organizer
      第42回キャピラリー電気泳動シンポジウム
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Development of pipetteless paper-based analytical devices with a volume gauge2022

    • Author(s)
      ダンチャナ ケウタ,岩﨑 弘志,金田 隆
    • Organizer
      日本分析化学会第71年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] N-ベンゾイルロイコメチレンブルーを用いたラッカーゼの蛍光分析2022

    • Author(s)
      任 健超,金田 隆
    • Organizer
      日本分析化学会第71年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 現場計測のためのリン酸計測用ペーパー分析デバイス2022

    • Author(s)
      難波 遥霞,ダンチャナ ケウタ,金田 隆
    • Organizer
      日本分析化学会第71年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] レーザーやペーパーデバイスを用いた分離・検出に関する研究2022

    • Author(s)
      金田 隆
    • Organizer
      日本分析化学会第71年会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 折り紙等電点電気泳動の開発2022

    • Author(s)
      金田 隆,Danchana Kaewta,山下 奈祐,礒山 美華
    • Organizer
      第81回分析化学討論会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Paper-based analytical device for the determination of glutamate in food samples2022

    • Author(s)
      ダンチャナ ケウタ,岩崎 弘志,落合 建太,難波 遥霞,金田 隆
    • Organizer
      第81回分析化学討論会
    • Related Report
      2022 Annual Research Report
  • [Presentation] ベンゾイルロイコメチレンブルーを用いるレーザー誘起蛍光検出/キャピラリー電気泳動法による西洋わさび由来ペルオキシダーゼの酵素アッセイ2021

    • Author(s)
      任健超,金田隆
    • Organizer
      日本分析化学会第70年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Direct counting of exosomes in a culture medium with laser-induced fluorescence2021

    • Author(s)
      Takashi Kaneta, Tatsuya Fujii
    • Organizer
      Asianalysis XV
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] レーザーを用いた細胞外小胞の捕集と計測2021

    • Author(s)
      金田 隆
    • Organizer
      日本化学会中国四国支部岡山地区化学講演会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] エクソソームタンパク質, CD63, の間接キャピラリー電気泳動イムノアッセイ2021

    • Author(s)
      金田 隆, 谷 夢希
    • Organizer
      第39回キャピラリー電気泳動シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] Characterization of Pieces of Paper That Form Reagent Containers for Use as Portable Analytical Devices2021

    • Author(s)
      Takashi Kaneta, Buking Spatana, Yusuke Suedomi, Duangjai Nacapricha
    • Organizer
      2021 International Chemical Congress of Pacific Basin Societies Virtual Congress
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Development of analytical methods for on-site analysis with miniaturized instruments2020

    • Author(s)
      Takashi Kaneta
    • Organizer
      The BK21 Plus Symposium on Nanobio Materials and Advanced Analytical Techniques
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 光圧を用いたナノ小胞捕集2020

    • Author(s)
      金田 隆, 谷 夢希
    • Organizer
      第80回分析化学討論会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 光圧を用いたフロー系での細胞外小胞の捕集2020

    • Author(s)
      谷 夢希,金田 隆
    • Organizer
      第80回分析化学討論会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Development of a completely portable photometric detector consisting of paired light-emitter detector diodes for the determination of paraquat2020

    • Author(s)
      Seetasang, Sasikarn,金田 隆
    • Organizer
      第80回分析化学討論会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Paper-based analytical devices for point-of-care tasting with instrument-free detection2020

    • Author(s)
      Takashi Kaneta
    • Organizer
      第59回日本生体医工学会大会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Book] Paper-Based Analytical Devices for Chemical Analysis and Diagnostics, Chapter 7, Chemiluminescence Paper-based analytical devices2021

    • Author(s)
      Waleed Alahmad, Pakorn Varanusupakul, Takashi Kaneta
    • Total Pages
      280
    • Publisher
      Elsevier
    • Related Report
      2021 Annual Research Report

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

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