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Analysis of H2 antibody and the inhibitory effect on kinesin

Research Project

Project/Area Number 21K20621
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0701:Biology at molecular to cellular levels, and related fields
Research InstitutionTohoku University

Principal Investigator

CHIBA KYOKO  東北大学, 学際科学フロンティア研究所, 助教 (10795701)

Project Period (FY) 2021-08-30 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsモータータンパク質 / 微小管 / キネシン / KIF5 / scFv / H2抗体 / 抗体配列決定 / 細胞骨格 / KIF5A / リコンビナント抗体 / ALS / 筋萎縮性側索硬化症 / 細胞内輸送 / 一分子観察
Outline of Research at the Start

分子モーターは細胞内でさまざまな物質の輸送に携わるタンパク質である。分子モーターのうちKIF5(キネシン)は微小管上を移動し小胞やミトコンドリアなどのカーゴを輸送する。小胞輸送の際のキネシン活性制御機構の全容は未だ不明な点が多い。本研究はキネシン抗体「H2」を用いキネシン活性化機構の解明に取り組む。30年以上の実績があるH2は最も有名なキネシン抗体であると共に、従来よりキネシンの運動阻害作用が報告されてきた。本研究ではリコンビナントH2抗体およびKIF5全長を用いてH2によるKIF5の阻害をin vitroで再構成することで、そのメカニズムを解析しキネシン活性化の分子機構解明に繋げる。

Outline of Final Research Achievements

Kinesin motor is involved in the intracellular transport of various cargos, including mitochondria. The H2 antibody, an anti-kinesin antibody, is widely used for analyzing intracellular transport. However, the amino acid sequence of the H2 antigen recognition site has not been determined. In this study, we identified the amino acid sequence of the variable region of the H2 antibody and created a recombinant H2 antibody. We further showed that the recombinant H2 was useful for functional analysis of kinesin.

Academic Significance and Societal Importance of the Research Achievements

細胞内で物質輸送に携わるキネシンモーターにはさまざまな種類が存在する。今回解析対象としたH2抗体はKIF5A, KIF5BおよびKIF5Cを認識する抗体である。KIF5ファミリーはいずれも疾患原因となるが、特にKIF5Aは痙性対麻痺やシャルコーマリートゥース病といった多くの神経変性疾患の原因となる。H2抗体にはキネシンモーターの阻害作用があることが報告されてきた。抗原認識部位のアミノ酸配列を決定しモーター阻害の分子メカニズムを明らかにすることで、疾患治療法探索の一助となることが期待される。

Report

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

    (9 results)

All 2023 2022 Other

All Int'l Joint Research (1 results) Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (2 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Remarks (2 results)

  • [Int'l Joint Research] University of Celifornia - Davis(米国)

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Generation of recombinant and chickenized scFv versions of an anti‐kinesin monoclonal antibody H22023

    • Author(s)
      Niwa Shinsuke、Chiba Kyoko
    • Journal Title

      Cytoskeleton

      Volume: - Issue: 9-10 Pages: 356-366

    • DOI

      10.1002/cm.21756

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Insight into the regulation of axonal transport from the study of KIF1A-associated neurological disorder2023

    • Author(s)
      Chiba Kyoko、Kita Tomoki、Anazawa Yuzu、Niwa Shinsuke
    • Journal Title

      Journal of Cell Science

      Volume: 136 Issue: 5

    • DOI

      10.1242/jcs.260742

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] An ALS‐associated KIF5A mutant forms oligomers and aggregates and induces neuronal toxicity2022

    • Author(s)
      Nakano Juri、Chiba Kyoko、Niwa Shinsuke
    • Journal Title

      Genes to Cells

      Volume: 27 Issue: 6 Pages: 421-435

    • DOI

      10.1111/gtc.12936

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Synergistic autoinhibition and activation mechanisms control kinesin-1 motor activity2022

    • Author(s)
      Chiba Kyoko、Ori-McKenney Kassandra M.、Niwa Shinsuke、McKenney Richard J.
    • Journal Title

      Cell Reports

      Volume: 39 Issue: 9 Pages: 110900-110900

    • DOI

      10.1016/j.celrep.2022.110900

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] An ALS-associated KIF5A mutant forms oligomers and aggregates and induces neuronal toxicity2022

    • Author(s)
      Kyoko Chiba
    • Organizer
      The American Society for Cell Biology (ASCB), Annual Meeting 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] KIF5A のALS 関連遺伝子変異はKIF5A のオリゴマー化と凝集を促進し神経毒性を引き起こす2022

    • Author(s)
      千葉 杏子
    • Organizer
      第60回日本生物物理学会年会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Remarks] 研究室ホームページ

    • URL

      https://www.fris.tohoku.ac.jp/~niwa/

    • Related Report
      2022 Annual Research Report
  • [Remarks] リサーチマップ

    • URL

      https://researchmap.jp/kchiba

    • Related Report
      2022 Annual Research Report

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Published: 2021-10-22   Modified: 2024-01-30  

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