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Differentiation of brain microvascular endothelial cells from human iPS cells

Research Project

Project/Area Number 21K20736
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0801:Pharmaceutical sciences and related fields
Research InstitutionNational Institutes of Biomedical Innovation, Health and Nutrition

Principal Investigator

YAMAGUCHI Tomoko  国立研究開発法人医薬基盤・健康・栄養研究所, 医薬基盤研究所 幹細胞制御プロジェクト, 研究員 (50580130)

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)
KeywordsBBB / P-gp / iPS細胞 / P-糖タンパク
Outline of Research at the Start

脳には物質の脳内移行を制御する血液脳関門(BBB)が存在しているため、中枢神経疾患の多くは薬剤の効果が著しく低い。中枢神経疾患治療薬は、優れた脳内移行性を有する必要があるが、培養皿上で脳内移行性を評価可能な系がなかった。近年、ヒトiPS細胞からBBBが作製可能であることが報告されているが、薬物や化学物質の脳から血液中への排出に重要なトランスポーターであるP-gpの発現が低いことが大きな問題点であることが明らかとなった。そこで本研究では、BBBの発生過程において重要な役割を担う液性因子や転写因子等を作用させることで、P-gpを高発現するiPS細胞由来BBBの作製を試みる。

Outline of Final Research Achievements

Currently, iPSC-derived BMECs (iBMECs) have been used to construct in vitro BBB models with physiological barrier functions, such as high trans-endothelial electrical resistance (TEER) and expression of transporter proteins. However, the relatively low p-glycoprotein (P-gp) level and a decrease in the efflux ratio of its substrates in iBMECs suggest their immature character. Therefore, more mature iBMECs by optimizing the differentiation protocol is beneficial for establishing a more reliable in vitro BBB model for studying central nervous system drug transport. Inducible SOX18 expression in iBMECs gained mature BBB phenotypes, including high TEER values and upregulation of P-gp expression. In addition, physiological barrier function and P-gp expression in BMECs can be enhanced by the canonical Wnt signaling activator. Our results may be useful for promoting the development of drugs for central nervous system diseases using in vitro BBB model

Academic Significance and Societal Importance of the Research Achievements

本研究により、より生体に近い脳血管内皮細胞をiPS細胞から作成可能となれば、iPS細胞由来脳血管内皮細胞が中枢神経疾患治療薬の開発において有用なツールに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

    (4 results)

All 2023 2022

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

  • [Journal Article] The maturation of iPS cell-derived brain microvascular endothelial cells by inducible-SOX18 expression2023

    • Author(s)
      Zhang Hongyan、Yamaguchi Tomoko、Kawabata Kenji
    • Journal Title

      Fluids and Barriers of the CNS

      Volume: 20 Issue: 1 Pages: 10-10

    • DOI

      10.1186/s12987-023-00408-5

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Inhibition of Glycogen Synthase Kinase 3ß Enhances Functions of Induced Pluripotent Stem Cell-Derived Brain Microvascular Endothelial Cells in the Blood–Brain Barrier2022

    • Author(s)
      Yamaguchi Tomoko、Nishijima Misae、Kawabata Kenji
    • Journal Title

      Biological and Pharmaceutical Bulletin

      Volume: 45 Issue: 10 Pages: 1525-1530

    • DOI

      10.1248/bpb.b22-00393

    • ISSN
      0918-6158, 1347-5215
    • Year and Date
      2022-10-01
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Presentation] 創薬に適したiPS細胞由来脳血管内皮細胞の改良2023

    • Author(s)
      山口朋子、西島美妙江、張鴻燕、川端健二
    • Organizer
      日本薬学会第143年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 薬物動態評価系への応用を目指したヒトiPS細胞由来脳血管内皮細胞の作製2022

    • Author(s)
      山口朋子、張鴻燕、西島美妙江、川端健二
    • Organizer
      日本組織培養学会第94回大会
    • Related Report
      2022 Annual Research Report

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

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