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Transcriptomic profiles of HC regeneration induced by YAP inhibitors

Research Project

Project/Area Number 19K09867
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56050:Otorhinolaryngology-related
Research InstitutionKyoto University

Principal Investigator

Kita Tomoko  京都大学, 医学研究科, 特定講師 (20362519)

Co-Investigator(Kenkyū-buntansha) 大森 孝一  京都大学, 医学研究科, 教授 (10233272)
中村 亮介  京都大学, 医学研究科, 研究員 (40736708)
Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords発生再生 / 有毛細胞 / 蝸牛 / 蝸牛有毛細胞 / 鳥類 / YAPシグナル / 再生 / 内耳再生 / chick / 阻害剤 / 内耳有毛細胞 / YAP阻害 / 再生シグナル
Outline of Research at the Start

ヒトを含む哺乳類において、聴覚ならびに平衡覚はセンサーの有毛細胞が失われると2度と再生されず難聴となる。一方で鳥類などは、有毛細胞が一旦消失しても、周囲の支持細胞から有毛細胞が再生し、聴覚および平衡覚機能が回復する。近年、様々な技術の進歩に後押しされ、複数の薬剤投与または遺伝子導入によりマーカー陽性の有毛細胞様細胞が産生できる時代となった。喫緊の課題は、機能的な有毛細胞の再生機序の解明であり、内耳再生につながる新薬開発である。本研究では、最近様々な分野で注目を集めているYAPシグナルをターゲットとし、有毛細胞分化における役割解明とYAP阻害剤の再生医療への応用の可能性について検討を行う。

Outline of Final Research Achievements

When humans develop hearing impairment due to hair cell (HC) loss, the only treatment is the use of hearing devices, resulting in a restricted life for the patient. Although numerous domestic and international studies have shown that marker-positive hair cell-like cells can be generated by drug administration and gene transfer, the regeneration of mature hair cells for auditory function has not yet been achieved. In this study, we investigated the role of YAP signaling, which is responsible for cell proliferation and differentiation in various tissues, in the differentiation and proliferation of hair cells in a chick sensory epithelium regeneration model. The results revealed that the main role of Yap in chick HC regeneration is not cell differentiation but proliferative effects on surrounding support cells.

Academic Significance and Societal Importance of the Research Achievements

本研究では、ニワトリの聴覚再生過程におけるYap分子の役割の一端を明らかとした。これまでHippo-Yap経路は、他の組織で、他のシグナル伝達経路(Wnt, Notch, Shh, TGFβなど)とのクロストークが報告されてきたが、内耳蝸牛有毛細胞の再生過程における働きは不明であった。今回、蝸牛障害後の支持細胞の増殖にYapが寄与することは判明したものの、前駆細胞への作用についてはマーカー蛋白の同定が待たれる。
世界的に聴覚障害は最も頻度の高い身体障碍と言われている。本研究成果は、世界中で未だ到達できていない「聴覚再生医療の実現に向けた一歩として、社会的な意義を持つと考えられる。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (8 results)

All 2023 2022 2021 2020

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 5 results) Presentation (2 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Stepwise fate conversion of supporting cells to sensory hair cells in the chick auditory epithelium2023

    • Author(s)
      Matsunaga Mami、Yamamoto Ryosuke、Kita Tomoko、Ohnishi Hiroe、Yamamoto Norio、Okano Takayuki、Omori Koichi、Nakagawa Takayuki
    • Journal Title

      iScience

      Volume: 26 Issue: 2 Pages: 106046-106046

    • DOI

      10.1016/j.isci.2023.106046

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Metformin Reduces the Incidence of Sensorineural Hearing Loss in Patients With Type 2 Diabetes Mellitus: A Retrospective Chart Review2022

    • Author(s)
      Miwa Toru、Kita Tomoko、Yamaguchi Taro、Sakamoto Tatsunori
    • Journal Title

      Cureus

      Volume: 14

    • DOI

      10.7759/cureus.30406

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Establishment of a radiation-induced vocal fold fibrosis mouse model2022

    • Author(s)
      Tanigami Yuki、Kawai Yoshitaka、Kaba Shinji、Uozumi Ryuji、Ohnishi Hiroe、Kita Tomoko、Omori Koichi、Kishimoto Yo
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 601 Pages: 31-37

    • DOI

      10.1016/j.bbrc.2022.02.065

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Initiation of Supporting Cell Activation for Hair Cell Regeneration in the Avian Auditory Epithelium: An Explant Culture Model2020

    • Author(s)
      Matsunaga Mami、Kita Tomoko、Yamamoto Ryosuke、Yamamoto Norio、Okano Takayuki、Omori Koichi、Sakamoto Satoko、Nakagawa Takayuki
    • Journal Title

      Frontiers in Cellular Neuroscience

      Volume: 14 Pages: 583994-583994

    • DOI

      10.3389/fncel.2020.583994

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Insulin-Like Growth Factor 1 on the Maintenance of Ribbon Synapses in Mouse Cochlear Explant Cultures2020

    • Author(s)
      Gao Li、Kita Tomoko、Katsuno Tatsuya、Yamamoto Norio、Omori Koichi、Nakagawa Takayuki
    • Journal Title

      Frontiers in Cellular Neuroscience

      Volume: 14 Pages: 571155-571155

    • DOI

      10.3389/fncel.2020.571155

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The use of a MITO-Porter to deliver exogenous therapeutic RNA to a mitochondrial disease’s cell with a A1555G mutation in the mitochondrial 12S rRNA gene results in an increase in mitochondrial respiratory activity2020

    • Author(s)
      Yamada Yuma、Maruyama Minako、Kita Tomoko、Usami Shin-ichi、Kitajiri Shin-ichiro、Harashima Hideyoshi
    • Journal Title

      Mitochondrion

      Volume: 55 Pages: 134-144

    • DOI

      10.1016/j.mito.2020.09.008

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] 鳥類蝸牛有毛細胞再生初期過程の発現変動遺伝子群におけるプロモータ領域のモチーフ解析2021

    • Author(s)
      松永 麻美 , 喜多 知子 , 山本 亮介 , 山本 典生 , 大森 孝一 , 中川 隆之
    • Organizer
      日本耳科学会
    • Related Report
      2021 Research-status Report
  • [Presentation] YAP Signals During Direct Transdifferentiation of Supporting Cells in Cochlear Explant Culture of Chicken and Mouse2020

    • Author(s)
      Tomoko Kita, Mami Matsunaga, Tomomi Miyatake, Li Gao, Ryosuke Nakamura, Norio Yamamoto, Takayuki Nakagawa, Koichi Omori
    • Organizer
      ARO 43rd MidWinter Meeting
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2024-01-30  

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