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Inner ear cell therapy by activated stem cell homing

Research Project

Project/Area Number 20K21662
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 56:Surgery related to the biological and sensory functions and related fields
Research InstitutionJuntendo University

Principal Investigator

Kamiya Kazusaku  順天堂大学, 医学部, 准教授 (10374159)

Project Period (FY) 2020-07-30 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2022: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2021: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2020: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Keywords遺伝性難聴 / 人工多能性幹細胞 / 内耳 / ギャップジャンクション / 分化誘導 / 遺伝子難聴 / 幹細胞 / ホーミング / iPS細胞 / 難聴
Outline of Research at the Start

遺伝性難聴において世界で最も高頻度に発生するCX26変異型遺伝性難聴の治療には蝸牛支持細胞、蝸牛線維細胞のギャップ結合によるイオン輸送能の修復が必要である。
本研究では、「幹細胞ホーミング機構」と呼ばれる、目的部位に幹細胞を誘導する分子機構を応用し、蝸牛組織内に大量の移植細胞を誘導する革新的技術開発を目的とした。内耳および移植細胞における幹細胞ホーミング機構を増強させることにより細胞生着を効率化し、遺伝性難聴の根本的治療法開発を行う。

Outline of Final Research Achievements

In the previous study, we have developed a mouse model with a CX26 defect especially in inner ear, which forms inner ear gap junctions, considered the onset mechanism due to gap junction disruption, and developed an inner ear gene therapy method that restores hearing by restoring this abnormal gap junction through gene transfer. In order to introduce inner ear progenitor cells made from stem cells into the cochlear tissue, it is important to widely apply the cell guidance molecular mechanism called stem cell homing that is correct for the cochlear tissue. We developed a technology that efficiently restores the correct cells to the inner ear tissue associated with hereditary hearing loss by increasing the amount of hearing loss, thereby restoring hearing.

Academic Significance and Societal Importance of the Research Achievements

本研究では世界で最も高頻度に発生する難聴原因遺伝子GJB2の遺伝子改変難聴モデルに対し、研究代表者が開発した幹細胞移植法に更に内耳ホーミング機構を応用して内耳への細胞導入効率を飛躍的に高めることにより、これまで成功例のない遺伝性難聴に対する聴力回復法の開発を試みる挑戦的な研究である。iPS細胞は成体細胞の初期化により作成でき、難聴患者の血液や皮膚組織からの樹立が可能なため既に多くの疾患において実用化研究が進められており、骨髄間葉系幹細胞も安全で移植効率を高めることが知られているためどちらも有用な移植細胞として活用できる。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (15 results)

All 2022 2021 2020 Other

All Journal Article (6 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 6 results,  Open Access: 6 results) Presentation (5 results) (of which Invited: 2 results) Book (1 results) Remarks (1 results) Patent(Industrial Property Rights) (2 results)

  • [Journal Article] Effects of Salicylate Derivatives on Localization of p.H723R Pendrin Mutant.2022

    • Author(s)
      Murakoshi M, Koyama S, Kobayashi T, Usami S, Kamiya K, Ikeda K, Haga Y, Tsumoto K, Nakamura H, Hirasawa N, Ishihara K, Wada H.
    • Journal Title

      Auris Nasus Larynx

      Volume: - Issue: 6 Pages: 928-937

    • DOI

      10.1016/j.anl.2022.03.009

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Association Between Earwax-Determinant Genotypes and Acquired Middle Ear Cholesteatoma in a Japanese Population2021

    • Author(s)
      Hara Satoshi、Kusunoki Takeshi、Nakagawa Hiroshi、Toyoda Yu、Nojiri Shuko、Kamiya Kazusaku、Furukawa Masayuki、Takata Yusuke、Okada Hiroko、Anzai Takashi、Matsumoto Fumihiko、Ikeda Katsuhisa
    • Journal Title

      Otolaryngology Head and Neck Surgery

      Volume: - Issue: 1 Pages: 139-145

    • DOI

      10.1177/01945998211000374

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Modeling Gap junction beta 2 gene-related deafness with human iPS2021

    • Author(s)
      Ichiro Fukunaga, Yoko Oe, Keiko Danzaki, Sayaka Ohta, Cheng Chen, Kyoko Shirai, Atsushi Kawano, Katsuhisa Ikeda, Kazusaku Kamiya
    • Journal Title

      Human Molecular Genetics

      Volume: 30 Issue: 15 Pages: 1429-1442

    • DOI

      10.1093/hmg/ddab097

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Activin/Nodal/TGF-β Pathway Inhibitor Accelerates BMP4-Induced Cochlear Gap Junction Formation During in vitro Differentiation of Embryonic Stem Cells2021

    • Author(s)
      Ichiro Fukunaga, Yoko Oe, Cheng Chen, Keiko Danzaki, Sayaka Ohta, Akito Koike, Katsuhisa Ikeda, Kazusaku Kamiya
    • Journal Title

      Frontiers in Cell and Developmental Biology

      Volume: 21 Pages: 1-12

    • DOI

      10.3389/fcell.2021.602197

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Generation of two iPSC lines from siblings of a homozygous patient with hearing loss and a heterozygous carrier with normal hearing carrying p.G45E/Y136X mutation in GJB22021

    • Author(s)
      Fukunaga Ichiro、Oe Yoko、Danzaki Keiko、Ohta Sayaka、Chen Cheng、Iizumi Madoka、Shiga Takahiro、Matsuoka Rina、Anzai Takashi、Hibiya-Motegi Remi、Tajima Shori、Ikeda Katsuhisa、Akamatsu Wado、Kamiya Kazusaku
    • Journal Title

      Stem Cell Research

      Volume: 53 Pages: 102290-102290

    • DOI

      10.1016/j.scr.2021.102290

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Generation of two induced pluripotent stem cell lines from PBMCs of siblings carrying c.235delC mutation in the GJB2 gene associated with sensorineural hearing loss2020

    • Author(s)
      Fukunaga Ichiro、Shirai Kyoko、Oe Yoko、Danzaki Keiko、Ohta Sayaka、Shiga Takahiro、Chen Cheng、Ikeda Katsuhisa、Akamatsu Wado、Kawano Atsushi、Kamiya Kazusaku
    • Journal Title

      Stem Cell Research

      Volume: 47 Pages: 101910-101910

    • DOI

      10.1016/j.scr.2020.101910

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] GJB2遺伝子変異型難聴に対するAll-in-one AAV vectorをもちいたゲノム編集治療法の開発2022

    • Author(s)
      神谷和作、宇梶太雄、中川綾哉、濡木理
    • Organizer
      第45回日本分子生物学会年会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] マウスES細胞をもちいたGJB2遺伝子変異型難聴モデルの開発2022

    • Author(s)
      神谷和作、新井大祐
    • Organizer
      第45回日本分子生物学会年会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 内耳上皮細胞を標的としたバイオ医薬品の開発2021

    • Author(s)
      神谷和作
    • Organizer
      第31回日本耳科学会総会・学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 内耳ギャップ結合遺伝子の加齢性難聴への関与2020

    • Author(s)
      神谷和作
    • Organizer
      第30回 日本耳科学会総会・学術講演会テーマセッション
    • Related Report
      2020 Research-status Report
  • [Presentation] 遺伝性難聴への遺伝子治療ベクターおよび中分子医薬品の開発2020

    • Author(s)
      神谷和作
    • Organizer
      第121回日本耳鼻咽喉科学会学術講演会・パネルディスカッション・AMED研究
    • Related Report
      2020 Research-status Report
  • [Book] AAVベクターを用いた内耳への遺伝子治療2020

    • Author(s)
      神谷 和作
    • Publisher
      羊土社
    • Related Report
      2020 Research-status Report
  • [Remarks] 患者iPS細胞で遺伝性難聴を再現 ~ 世界最多の難聴型への薬剤スクリーニングが可能に ~

    • URL

      https://med.juntendo.ac.jp/news/20210518-01.html

    • Related Report
      2021 Research-status Report
  • [Patent(Industrial Property Rights)] 改変型アデノ随伴ウイルスベクター2021

    • Inventor(s)
      神谷和作
    • Industrial Property Rights Holder
      順天堂大学
    • Industrial Property Rights Type
      特許
    • Filing Date
      2021
    • Related Report
      2021 Research-status Report
  • [Patent(Industrial Property Rights)] 内耳前駆細胞の製造法2021

    • Inventor(s)
      神谷和作
    • Industrial Property Rights Holder
      順天堂大学
    • Industrial Property Rights Type
      特許
    • Filing Date
      2021
    • Related Report
      2021 Research-status Report

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Published: 2020-08-03   Modified: 2025-01-30  

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