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Development of a myelin dysfunction assessment method based on single axon conduction velocimetry and machine learning of axon morphology.

Research Project

Project/Area Number 22K15344
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 47060:Clinical pharmacy-related
Research InstitutionTohoku Institute of Technology

Principal Investigator

Shibata Mikako  東北工業大学, 工学部, 研究員 (40887056)

Project Period (FY) 2022-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2023: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2022: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords末梢神経障害 / MEA / 感覚ニューロン / 薬剤性ミエリン障害 / 抗がん剤 / ミエリン障害 / AI / 末梢神経毒性 / 軸索伝導速度計測 / CMOS-MEA / 創薬スクリーニング / 軸索電動速度 / ミエリン機能障害 / 機械学習
Outline of Research at the Start

薬剤性のミエリン障害は、末梢神経でミエリンを形成するシュワン細胞の障害により引き
起こされる化学療法誘発性末梢神経障害 (CIPN)であり、末梢神経でミエリンを形成するシュワン細胞の障害により引き起こされる。末梢神経組織はターンオーバーが遅く、発症が遅れるために毒性予測ができず、神経毒性に対する投与量の基準は確立されていないことから、評価法の構築が求められている。本研究では、CMOS多電極アレイ(CMOS-MEA)による軸索伝導速度計測および機械学習による画像解析により、医薬品による末梢神経のミエリン障害検出法および評価法の開発を行う。

Outline of Final Research Achievements

Immunostained images and changes in impedance values were measured after exposure of sensory neurons cultured on MEA to negative compounds and anticancer agents. The results showed that by focusing on changes in impedance values, it was possible to detect peripheral neuropathy at concentrations lower than those at which morphological changes occur. Next, an AI that could detect differences at lower doses was created using machine learning of stained images 24 hours after addition. The created AI judged negative compounds as negative and vincristine as positive in the unlearned data. It also detected toxicity of Suramin, a myelin-disrupting positive compound, from 10 μM. The AI was able to predict drug-induced myelin damage at previously undetectable doses.

Academic Significance and Societal Importance of the Research Achievements

本研究で開発したMEAを用いたインピーダンス計測による末梢神経障害の検出法および、染色画像の機械学習を用いた薬剤性ミエリン障害の予測法は、いずれも先行研究で報告されている毒性濃度や形態変化が認められる濃度と比較して、低濃度で早期に障害を予測できる評価系であり、創薬開発の探索段階におけるスクリーニングにおいて有効なin vitro試験として期待できる。

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (8 results)

All 2023 2022

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (6 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] An In Vitro Assessment Method for Chemotherapy-Induced Peripheral Neurotoxicity Caused by Anti-Cancer Drugs Based on Electrical Measurement of Impedance Value and Spontaneous Activity2023

    • Author(s)
      Han Xiaobo、Matsuda Naoki、Ishibashi Yuto、Shibata Mikako、Suzuki Ikuro
    • Journal Title

      Pharmaceutics

      Volume: 15 Issue: 12 Pages: 2788-2788

    • DOI

      10.3390/pharmaceutics15122788

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Large-Area Field Potential Imaging Having Single Neuron Resolution Using 236 880 Electrodes CMOS-MEA Technology2023

    • Author(s)
      1.I. Suzuki*, N. Matsuda, X. Han, S. Noji, M. Shibata, N. Nagafuku, Y. Ishibashi
    • Journal Title

      Advanced Science

      Volume: なし Issue: 20 Pages: 1-23

    • DOI

      10.1002/advs.202207732

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] In vitro neurotoxicity assessment of compounds using field potential imaging2023

    • Author(s)
      松田直毅、韓笑波、柴田実可子、鈴木郁郎
    • Organizer
      第50回毒性学会学術年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Development of assessment for peripheral neuropathy of compounds based on firing of single DRG neuron2023

    • Author(s)
      松田直毅,韓笑波,柴田実可子,鈴木郁郎
    • Organizer
      日本安全性薬理研究会第14回学術年会
    • Related Report
      2022 Research-status Report
  • [Presentation] Development of a method for predicting pain and mechanism of action of compounds based on firing of single DRG neuron.2022

    • Author(s)
      Naoki Matsuda, Mikako Shibata, Xiaobo Han, Ikuro Suzuki.
    • Organizer
      第50回日本毒性学会学術年会
    • Related Report
      2022 Research-status Report
  • [Presentation] Development of the prediction method of peripheral neuropathy based on firing pattern of each single neuron.2022

    • Author(s)
      Xiaobo Han, Naoki Matsuda, Mikako Shibata, Ikuro Suzuki.
    • Organizer
      Safety Pharmacology Society
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 高時空間分解能を有する電気イメージングによる化合物の神経応答2022

    • Author(s)
      松田直毅,韓笑波,柴田実可子,永福菜美,石橋勇人,鈴木郁郎
    • Organizer
      第13回スクリーニング学研究会
    • Related Report
      2022 Research-status Report
  • [Presentation] In vitro assessment of drug-induced peripheral pain in DRG neurons at single cell level using CMOS-MEA2022

    • Author(s)
      韓笑波, 柴田実可子, 松田直毅, 鈴木郁郎
    • Organizer
      第96回日本薬理学会年会
    • Related Report
      2022 Research-status Report

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Published: 2022-04-19   Modified: 2025-01-30  

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