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Functional analysis of V-ATPase in synaptic and lysosomal vesicles using novel genome-editing mice

Research Project

Project/Area Number 20K07243
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 48010:Anatomy-related
Research InstitutionHamamatsu University School of Medicine

Principal Investigator

Aoto Kazushi  浜松医科大学, 医学部, 助教 (60360476)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywordsてんかん性脳症 / ATP6V0A1 / V-ATPase / シナプス小胞 / 損傷リソソーム / CRISPR-Cas9ゲノム編集 / ヒト疾患モデルマウス / オートファジー異常 / リソソーム / 小児難治性てんかん原因遺伝子 / ATP6VA1 / 小胞(リソソーム・シナプス小胞 / Atp6v0a1-A512Pマウス / TetON3G-Creマウス / Atp6v0a1-floxマウス / Atp6v0a1-3xHAマウス / 小胞(リソソーム・シナプス小胞) / Atp6v0a1 / 脳神経の小胞(リソソーム・シナプス小胞) / GONAD法 / Vesicle-IP
Outline of Research at the Start

最近、申請者らはてんかんの原因遺伝子として、プロトンポンプであるV-ATPaseの構成サブユニットの1つであるATP6VA1の p.A512P変異を見出した。培養細胞の解析から、V-ATPaseは、小胞(リソソーム・シナプス小胞)で発現し、小胞内のpH調節、細胞死制御、オートファジー、mTorシグナル制御などに関与することが明らかになっているが、有用なマウスモデルがないため、脳神経でのV-ATPaseの機能は十分にわかっていない。本研究では、以下の3つの変異マウスを用いた解析によって、脳神経の小胞におけるV-ATPaseの生理的役割、及び、小胞の形成・維持に関与する分子群を明らかにする。

Outline of Final Research Achievements

From patients of epileptic encephalopathy, we found four variants of ATP6V0A1 which is one of the component subunits of V-ATPase and is a proton pump expressed on the membrane of intracellular vesicles (endoplasmic reticulum, synaptic vesicle, and lysosome). We generated two A512P and R741Q mutants and knockout mice and found that ATP6V0A1 is involved in the regulation of pH, cell death, autophagy, and mTOR signaling in brain vesicles including synaptic vesicles and lysosomes.

Academic Significance and Societal Importance of the Research Achievements

てんかんは最も頻度が高い神経疾患の一つで、日本国内に人口の1%近くの約100万人の患者がいると推定される。本研究は、リソソームの膜タンパク質ATP6V0A1の変異が発達性およびてんかん性脳症と関与していることを世界で初めて明らかにした。本研究の成果は、小児難治性てんかんの病態解明に貢献し、ゲノム編集で作製した疾患モデルマウスは効果的な治療法の開発に寄与することが期待される。

Report

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

    (13 results)

All 2023 2022 2021 2019

All Journal Article (11 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 11 results,  Open Access: 6 results) Presentation (1 results) Book (1 results)

  • [Journal Article] Cnpy3 mice reveal neuronal expression of Cnpy3 in the brain2023

    • Author(s)
      Islam Md. Monirul、Mutoh Hiroki、Aoto Kazushi、Belal Hazrat、Saitsu Hirotomo
    • Journal Title

      Journal of Neuroscience Methods

      Volume: 383 Pages: 109730-109730

    • DOI

      10.1016/j.jneumeth.2022.109730

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Generation of Flag/DYKDDDDK Epitope Tag Knock-In Mice Using i-GONAD Enables Detection of Endogenous CaMKIIα and β Proteins2022

    • Author(s)
      Aoto Kazushi、Takabayashi Shuji、Mutoh Hiroki、Saitsu Hirotomo
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 23 Issue: 19 Pages: 11915-11915

    • DOI

      10.3390/ijms231911915

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Successful i-GONAD in Mice at Early Zygote Stage through In Vivo Electroporation Three Min after Intraoviductal Instillation of CRISPR-Ribonucleoprotein2022

    • Author(s)
      Shuji Takabayashi, Kenta Iijima, Masumi Tsujimura, Takuya Aoshima, Hisayoshi Takagi, Kazushi Aoto and Masahiro Sato
    • Journal Title

      Int. J. Mol. Sci.

      Volume: 23(18) Issue: 18 Pages: 10678-10678

    • DOI

      10.3390/ijms231810678

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Genome sequencing and RNA sequencing of urinary cells reveal an intronic FBN1 variant causing aberrant splicing2022

    • Author(s)
      Hiraide Takuya、Shimizu Kenji、Miyamoto Sachiko、Aoto Kazushi、Nakashima Mitsuko、Yamaguchi Tomomi、Kosho Tomoki、Ogata Tsutomu、Saitsu Hirotomo
    • Journal Title

      Journal of Human Genetics

      Volume: - Issue: 7 Pages: 387-392

    • DOI

      10.1038/s10038-022-01016-1

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Elucidation of pathological mechanism caused by human disease mutation in CaMKIIβ2022

    • Author(s)
      Mutoh H, Aoto K, Miyazaki T, Fukuda A, Saitsu H.
    • Journal Title

      Journal of Neuroscience Research

      Volume: 100 Issue: 3 Pages: 880-896

    • DOI

      10.1002/jnr.25013

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A novel de novo TMEM63A variant in a patient with severe hypomyelination and global developmental delay2022

    • Author(s)
      Fukumura Shinobu、Hiraide Takuya、Yamamoto Akiyo、Tsuchida Kousuke、Aoto Kazushi、Nakashima Mitsuko、Saitsu Hirotomo
    • Journal Title

      Brain and Development

      Volume: 44 Issue: 2 Pages: 178-183

    • DOI

      10.1016/j.braindev.2021.09.006

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] ATP6V0A1 encoding the a1-subunit of the V0 domain of vacuolar H(+)-ATPases is essential for brain development in humans and mice2021

    • Author(s)
      Aoto K, Kato M, Akita T, Nakashima M, Mutoh H, Akasaka N, Tohyama J, Nomura Y, Hoshino K, Ago Y, Tanaka R, Epstein O, Ben-Haim R, Heyman E, Miyazaki T, Belal H, Takabayashi S, Ohba C, Takata A, Mizuguchi T, Miyatake S, Miyake N, Fukuda A, Matsumoto N and Saitsu H
    • Journal Title

      Nat Commun

      Volume: 12 Issue: 1 Pages: 2107-2107

    • DOI

      10.1038/s41467-021-22389-5

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Cell lineage‐ and expression‐based inference of the roles of forkhead box transcription factor Foxc2 in craniofacial development2021

    • Author(s)
      Takenoshita Manami、Takechi Masaki、Vu Hoang Tri、Furutera Toshiko、Akagawa Chisaki、Namangkalakul Worachat、Aoto Kazushi、Kume Tsutomu、Miyashin Michiyo、Iwamoto Tsutomu、Iseki Sachiko
    • Journal Title

      Developmental Dynamics

      Volume: - Issue: 8 Pages: 1-10

    • DOI

      10.1002/dvdy.324

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A boy with biallelic frameshift variants in TTC5 and brain malformation resembling tubulinopathies2021

    • Author(s)
      Miyamoto Sachiko、Kato Mitsuhiro、Sugiyama Kenji、Horiguchi Ryo、Nakashima Mitsuko、Aoto Kazushi、Mutoh Hiroki、Saitsu Hirotomo
    • Journal Title

      Journal of Human Genetics

      Volume: 66 Issue: 12 Pages: 1189-1192

    • DOI

      10.1038/s10038-021-00953-7

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Parthenogenetic mosaicism: generation via second polar body retention and unmasking of a likely causative PER2 variant for hypersomnia2021

    • Author(s)
      Masunaga Yohei、Kagami Masayo、Kato Fumiko、Usui Takeshi、Yonemoto Takako、Mishima Kazuo、Fukami Maki、Aoto Kazushi、Saitsu Hirotomo、Ogata Tsutomu
    • Journal Title

      Clinical Epigenetics

      Volume: 13 Issue: 1 Pages: 73-73

    • DOI

      10.1186/s13148-021-01062-0

    • NAID

      120007042184

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Nanopore sequencing reveals a structural alteration of mirror‐image duplicated genes in a genome‐editing mouse line2019

    • Author(s)
      Miyamoto Sachiko、Aoto Kazushi、Hiraide Takuya、Nakashima Mitsuko、Takabayashi Shuji、Saitsu Hirotomo
    • Journal Title

      Congenital Anomalies

      Volume: - Issue: 4 Pages: 120-125

    • DOI

      10.1111/cga.12364

    • NAID

      210000157792

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 簡便なi-GONAD法によるFlag(DYKDDDDK)タグを挿入したマウスの作製とその有用性2023

    • Author(s)
      青戸一司、高林秀次、武藤弘樹、才津浩智
    • Organizer
      128回日本解剖学会総会・全国学術総会
    • Related Report
      2022 Annual Research Report
  • [Book] 生体の科学、特集リソソーム研究の新展開、Ⅲリソソームと疾患、損傷リソソームとてんかん2022

    • Author(s)
      青戸一司、才津浩智
    • Total Pages
      5
    • Publisher
      医学書院
    • Related Report
      2022 Annual Research Report

URL: 

Published: 2020-04-28   Modified: 2024-01-30  

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