• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Development of inner ear AAV genome editing therapy for hereditary hearing loss using patient iPS cells and animal models

Research Project

Project/Area Number 21H03089
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 56050:Otorhinolaryngology-related
Research InstitutionJuntendo University

Principal Investigator

Ikeda Katsuhisa  順天堂大学, 医学部, 特任教授 (70159614)

Co-Investigator(Kenkyū-buntansha) 美野輪 治  順天堂大学, 医学部, 非常勤講師 (00181967)
神谷 和作  順天堂大学, 医学部, 准教授 (10374159)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2023: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2022: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2021: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Keywords遺伝性難聴 / GJB2変異型難聴モデル / ゲノム編集 / 内耳AAVゲノム / ips由来疾患モデル細胞 / 遺伝子難聴 / iPS由来疾患モデル細胞
Outline of Research at the Start

本研究では、独自開発の改変型AAVベクターとiPS由来疾患モデル細胞(特許出願済)を用いた遺伝性難聴への内耳AAVゲノム編集技治療法の開発研究である。標的とするのは遺伝性難聴最大の原因遺伝子GJB2(コネキシン26)の遺伝子変異であり、変異ゲノムの修復による根本的治療法を開発する。本研究の特色は蝸牛上皮全般への遺伝子導入が可能な独自開発の新型ベクター「AAV-HS」を用い、日本人の典型的GJB2変異を持つ患者iPS由来モデル細胞および対応するCX26変異モデルマウス(GJB2-KO, GJB2-R75W-Tg, GJB2-KI)へのゲノム編集により遺伝子修復を行う内耳AAVゲノム編集治療の確立を目指す。

Outline of Final Research Achievements

In this study, we have developed a fundamental treatment for hereditary hearing loss using iPS cells and genome editing technology to repair cochlear gap junctions and inner ear cell therapy We established and induced differentiation of iPS cells from a Japanese patient with a typical GJB2 mutation, and obtained disease model cells. Furthermore, we developed a genome-edited knock-in mouse with a typical GJB2 mutation. We also developed a highly efficient vector specialized for GJB2 related hearing loss, and developed a capsid-modified AAV vector for inner ear cells capable of gene transfer to the entire cochlear epithelium and a specific multiple promoter, and filed a patent application (JP-Application 2021-198101). The vector was confirmed to be useful for genome editing to iPS derived cells.

Academic Significance and Societal Importance of the Research Achievements

本研究は遺伝性難聴の分子病態・機序を解明する突破口を切り開き、根本的治療の現実化に正面から取り組むもので、画期的な技術を駆使している。これらの画期的な企画はこれまで全く創造されていない極めて独創性の高い研究である。この技術が臨床に適用されると、聴覚医学に新しい局面を迎えることができる。難聴に悩み、苦しむ数百万人の患者への大きな福音となり、国民生活の質的向上をもたらす極めて有意義な研究である。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (10 results)

All 2023 2022 2021

All Journal Article (6 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 6 results,  Open Access: 6 results) Presentation (4 results)

  • [Journal Article] Generation and characterization of a human iPSC line (JUFMDOi007-A) from a patient with Usher syndrome due to mutation in USH2A2023

    • Author(s)
      Ukaji Takao、Takahashi-Shibata Mikako、Arai Daisuke、Tsutsumi Harumi、Tajima Shori、Akamatsu Wado、Matsumoto Fumihiko、Ikeda Katsuhisa、Usami Shin-ichi、Kamiya Kazusaku
    • Journal Title

      Stem Cell Research

      Volume: 69 Pages: 103100-103100

    • DOI

      10.1016/j.scr.2023.103100

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [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 Annual Research 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 Annual Research 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 Annual Research 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 Annual Research 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 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] ヒトiPS細胞由来Cx26ギャップ結合構築細胞の分化誘導法の確立と電気生理学的手法による機能解析2023

    • Author(s)
      神谷 和作, 高橋 実可子, 池田 勝久
    • Organizer
      第33回日本耳科学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] マウスES細胞を用いたGJB2遺伝子変異型難聴in vitroモデルの開発2023

    • Author(s)
      新井 大祐, 宇梶 太雄, 柴田 実可子, 池田 勝久, 神谷 和作
    • Organizer
      第33回日本耳科学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 内耳ギャップ結合を標的としたカプシド改変型AAVベクターの開発2023

    • Author(s)
      神谷 和作, 宇梶 太雄, 新井 大祐, 高橋 実可子, 池田 勝久
    • Organizer
      第33回日本耳科学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] GJB2 遺伝子変異型難聴へのゲノム編集による遺伝子治療法の開発2023

    • Author(s)
      宇梶 太雄, 池田 勝久, 神谷 和作
    • Organizer
      第33回日本耳科学会
    • Related Report
      2023 Annual Research Report

URL: 

Published: 2021-04-28   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi