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Elucidation of acquired SNHL mechanism caused from Nox3-derived ROS and beyond

Research Project

Project/Area Number 21H02672
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 48030:Pharmacology-related
Research InstitutionKobe University

Principal Investigator

Ueyama Takehiko  神戸大学, バイオシグナル総合研究センター, 教授 (80346254)

Co-Investigator(Kenkyū-buntansha) 坂口 博史  神戸大学, バイオシグナル総合研究センター, 研究員 (00515223)
足立 直子  神戸大学, バイオシグナル総合研究センター, 助教 (70604510)
中村 高志  京都府立医科大学, 医学(系)研究科(研究院), 助教 (80724179)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2023: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
Fiscal Year 2021: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Keywords後天性感音難聴 / 活性酸素 / ROS / 難聴 / 後天性難聴 / NADPH oxidase
Outline of Research at the Start

tdTomato赤色蛍光を指標にNox3発現細胞を特定できるマウス(Nox3-CreKI;tdTomato+/+)を用い、内耳、特に蝸牛でのNox3発現細胞を明らかにする。加えて、両側 Nox3 アレルを Cre で置換した Nox3-CreKI/KI;tdTomato+/+は、Nox3-KOとなるので、このKOマウスを用いNox3由来のROSによる難聴発症機序(標的疾患: 加齢、騒音、薬剤性難聴)を解明する。申請者は、聴覚も【左右差】を呈することを発見しており、聴覚には潜在的に【左右差】が存在との概念を確立し、突発性難聴等の片側性聴覚疾患の発症基盤へのROSストレスの関与を証明する。

Outline of Final Research Achievements

1.Our engineered mice, in which Nox3 expressing cells are labeled with tdTomato fluorescence, were employed to uncover Nox3 expression in the cochlea, identifying inner and outer hair cells as well as supporting cells as Nox3-expressing cells. 2.It was observed that the number of Nox3-expressing cells, induced by aging, as well as a famous ototoxic agent (cisplatin) and noise, lead to apoptosis in outer hair cells with induced Nox3 expression, thus elucidating its role in causing hearing impairment. 3.Employing Nox3-KO mice engineered in this study, it was elucidated that deletion of Nox3 in models of aging, cisplatin-induced ototoxicity, and noise-induced hearing loss leads to auditory preservation. 4.Stable cell lines capable of measuring Nox3 promoter activity through luminescence were established, initiating clinical research pertaining to human auditory function.

Academic Significance and Societal Importance of the Research Achievements

本研究は、Nox3由来のROSの抑制や消去により、後天性感音難聴の発症を抑制することが出来ることを明らかにした。本研究は、世界初の後天性感音難聴の治療薬の開発に発展していく可能性を秘めている。
また、感音難聴の治療薬・法の開発により、難聴患者の医学的側面のみならず、難聴が誘発する認知症により生じる社会全体としての介護負担の改善、難聴(特に言語発達段階の難聴や高齢者の難聴)により生じる社会としての労働力や生産性の低下を改善できる可能性があり、活力のある日本社会の再生・持続に一翼を担えると考えている。

Report

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

    (11 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (2 results) Journal Article (7 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 7 results,  Open Access: 6 results) Presentation (2 results) (of which Invited: 2 results)

  • [Int'l Joint Research] Seoul National University(韓国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] NIDCD, NIH(米国)

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Remodeling of the postsynaptic proteome in male mice and marmosets during synapse development2024

    • Author(s)
      Kaizuka Takeshi、Suzuki Takehiro、Kishi Noriyuki、Tamada Kota、Kilimann Manfred W.、Ueyama Takehiko、Watanabe Masahiko、Shimogori Tomomi、Okano Hideyuki、Dohmae Naoshi、Takumi Toru
    • Journal Title

      Nature Communications

      Volume: 15 Issue: 1 Pages: 2496-2496

    • DOI

      10.1038/s41467-024-46529-9

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Dispensable role of Rac1 and Rac3 after cochlear hair cell specification2023

    • Author(s)
      Nakamura Takashi, Sakaguchi Hirofumi, Mohri Hiroaki, Ninoyu Yuzuru, Goto Akihiro, Yamaguchi Taro, Hishikawa Yoshitaka, Matsuda Michiyuki, Saito Naoaki, Ueyama Takehiko
    • Journal Title

      Journal of Molecular Medicine

      Volume: 101 Issue: 7 Pages: 843-854

    • DOI

      10.1007/s00109-023-02317-4

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Loss of synaptic ribbons is an early cause in ROS-induced acquired sensorineural hearing loss2023

    • Author(s)
      Kurasawa Shunkou、Mohri Hiroaki、Tabuchi Keiji、Ueyama Takehiko
    • Journal Title

      Neurobiology of Disease

      Volume: 186 Pages: 106280-106280

    • DOI

      10.1016/j.nbd.2023.106280

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] S-Palmitoylation of Tyrosinase at Cysteine500 Regulates Melanogenesis2023

    • Author(s)
      Niki Yoko、Adachi Naoko、Fukata Masaki、Fukata Yuko、Oku Shinichiro、Makino-Okamura Chieko、Takeuchi Seiji、Wakamatsu Kazumasa、Ito Shosuke、Declercq Lieve、Yarosh Daniel B.、Mammone Tomas、Nishigori Chikako、Saito Naoaki、Ueyama Takehiko
    • Journal Title

      Journal of Investigative Dermatology

      Volume: 143 Issue: 2 Pages: 317-327.e6

    • DOI

      10.1016/j.jid.2022.08.040

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Late‐onset hearing loss case associated with a heterozygous truncating variant of <scp> <i>DIAPH1</i> </scp>2022

    • Author(s)
      Kim Bong Jik、Miyoshi Takushi、Chaudhry Taimur、Friedman Thomas B.、Choi Byung Yoon、Ueyama Takehiko
    • Journal Title

      Clinical Genetics

      Volume: 101 Issue: 4 Pages: 466-471

    • DOI

      10.1111/cge.14115

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Effects of flurbiprofen on the functional regulation of serotonin transporter and its misfolded mutant2022

    • Author(s)
      Hirakawa Haruki、Taguchi Kei、Murakawa Seiya、Asano Masaya、Noguchi Soma、Kikkawa Satoshi、Harada Kana、Adachi Naoko、Ueyama Takehiko、Hide Izumi、Tanaka Shigeru、Sakai Norio
    • Journal Title

      Journal of Pharmacological Sciences

      Volume: 148 Issue: 1 Pages: 187-195

    • DOI

      10.1016/j.jphs.2021.11.006

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Nox3-Derived Superoxide in Cochleae Induces Sensorineural Hearing Loss2021

    • Author(s)
      Mohri Hiroaki、Ninoyu Yuzuru、Sakaguchi Hirofumi、Hirano Shigeru、Saito Naoaki、Ueyama Takehiko
    • Journal Title

      The Journal of Neuroscience

      Volume: 41 Issue: 21 Pages: 4716-4731

    • DOI

      10.1523/jneurosci.2672-20.2021

    • NAID

      120007097047

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Acquired hearing loss induced by ROS and challenges for therapy development based on its mechanism2022

    • Author(s)
      上山健彦
    • Organizer
      日本薬理学会年会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Sensorineural hearing loss: challenges for therapy development based on its mechanisms2022

    • Author(s)
      上山健彦
    • Organizer
      第8回ニューロサイエンスネットワークシンポジウム
    • Related Report
      2021 Annual Research Report
    • Invited

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

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