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miRNA administration therapy for Rett syndrome model mice

Research Project

Project/Area Number 20K08224
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52050:Embryonic medicine and pediatrics-related
Research InstitutionInstitute for Developmental Research Aichi Developmental Disability Center

Principal Investigator

Nakayama Atsuo  愛知県医療療育総合センター発達障害研究所, 細胞病態研究部, 部長 (50227964)

Co-Investigator(Kenkyū-buntansha) 松木 亨  愛知県医療療育総合センター発達障害研究所, 細胞病態研究部, 主任研究員 (90332329)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
KeywordsRett syndrome / MECP2 / gene therapy / oligodendrocyte / AAV / レット症候群 / 遺伝子治療 / モデルマウス / オリゴデンドロサイト / Mecp2 / AAVベクター / Rett症候群 / マウスモデル / miRNA
Outline of Research at the Start

Rett症候群は原因遺伝子が判明している発達症・知的障害の中では比較的頻度が高く、国内にも多くの患女児が存在する。近年他の遺伝子疾患で成果を上げている遺伝子補充療法による症状の改善や進行の抑制が期待されているが、原因遺伝子産物(その遺伝子を元に作られるタンパク質)の機能が非常に多岐におよび、また複雑でもあるために、単純な補充療法で予測通りの効果が得られるか、また予想できない副作用が起きないかといった懸念が残っている。本研究ではこの原因遺伝子産物の機能の中でRett症候群の症状に特に関連が大きいと考えられる部分に焦点を絞り、遺伝子治療の新しい標的を動物実験で探る。

Outline of Final Research Achievements

MECP2 gene, whose mutations are the common cause of Rett syndrome, is also harmful for normal CNS development, when its expression is excessive. Therefore we originally planed to search other target genes useful for the gene therapy against Rett syndrome. We originally focused on miR-199a, which is one of downstream effector of Mecp2. However, Mecp2 KO mice (Mecp2 -/y) could survive no longer than 5 weeks after birth, and were not available for gene therapy assessment. Therefore, we changed the original plan and tried to develop gene therapy vectors that enable KO mice to survive longer. Among AAV vectors to express Mecp2 itself under several different promoters including Mecp2 promotor itself, only AAV.PHP.eB-CNPpro-MeCP2-2A-RFP vector, which induce Mecp2 expression in oligodendrocyte, showed life-prolonging effects on KO mice by intravenous administration. This suggested that the early death of KO mice is due to loss of MECP2 in oligodendrocytes.

Academic Significance and Societal Importance of the Research Achievements

多機能分子MECP2の遺伝子変化によるレット症候群では、原因遺伝子がわかっているにも関わらず遺伝子治療の臨床応用は困難となっている。これはMECP2を過不足なくさまざまな細胞腫で発現させることが必要だが、それが難しいためである。今回の研究ではレット症候群遺伝子治療に向けて、神経細胞のみでなくオリゴデンドログリアでのMECP2発現回復が生命予後改善に重要であることが示唆された。

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

    (13 results)

All 2024 2023 2022 2021 2020

All Journal Article (10 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 10 results,  Open Access: 7 results) Presentation (3 results)

  • [Journal Article] Expression analysis of type I ARF small GTPases ARF1-3 during mouse brain development2024

    • Author(s)
      Matsuki Tohru、Hamada Nanako、Ito Hidenori、Sugawara Ryota、Iwamoto Ikuko、Nakayama Atsuo、Nagata Koh-ichi
    • Journal Title

      Molecular Biology Reports

      Volume: 51 Issue: 1 Pages: 106-106

    • DOI

      10.1007/s11033-023-09142-5

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Histological Analysis of a Mouse Model of the 22q11.2 Microdeletion Syndrome2023

    • Author(s)
      Tabata Hidenori、Mori Daisuke、Matsuki Tohru、Yoshizaki Kaichi、Asai Masato、Nakayama Atsuo、Ozaki Norio、Nagata Koh-ichi
    • Journal Title

      Biomolecules

      Volume: 13 Issue: 5 Pages: 763-763

    • DOI

      10.3390/biom13050763

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Expression analyses of C-terminal-binding protein 1 (CtBP1) during mouse brain development2023

    • Author(s)
      Hamada Nanako, Matsuki Tohru, Iwamoto Ikuko, Nishijo Takuma, Noda Mariko, Tabata Hidenori, Nakayama Atsuo, Nagata Koh-Ichi
    • Journal Title

      Developmental Neuroscience

      Volume: - Issue: 4 Pages: 1-11

    • DOI

      10.1159/000534886

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Expression analyses of WAC, a responsible gene for neurodevelopmental disorders, during mouse brain development2023

    • Author(s)
      Nishikawa Masashi、Matsuki Tohru、Hamada Nanako、Nakayama Atsuo、Ito Hidenori、Nagata Koh-ichi
    • Journal Title

      Medical Molecular Morphology

      Volume: 56 Issue: 4 Pages: 266-273

    • DOI

      10.1007/s00795-023-00364-x

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A Novel Constitutively Active c.98G>C, p.(R33P) Variant in RAB11A Associated with Intellectual Disability Promotes Neuritogenesis and Affects Oligodendroglial Arborization2023

    • Author(s)
      Yumi Tsuneura, Taeko Kawai, Keitaro Yamada, Shintaro Aoki, Mitsuko Nakashima, Shima Eda, Tohru Matsuki, Masashi Nishikawa, Koh-ichi Nagata, Yasushi Enokido, Hirotomo Saitsu, Atsuo Nakayama
    • Journal Title

      Human Mutation

      Volume: 2023 Pages: 8126544-8126544

    • DOI

      10.1155/2023/8126544

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The distribution of neuroligin4, an autism-related postsynaptic molecule, in the human brain2023

    • Author(s)
      Toya Akie, Fukada Masahide, Aoki Eiko , Matsuki Tohru, Ueda Masashi, Eda Shima, Hashizume Yoshio , Iio Akio, Masaki Shigeo, Nakayama Atsuo
    • Journal Title

      Molecular Brain

      Volume: 16 Issue: 1 Pages: 20-20

    • DOI

      10.1186/s13041-023-00999-y

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Novel WNT10A variant in a Japanese case of nonsyndromic oligodontia2023

    • Author(s)
      Adachi Junya、Aoki Yoshihiko、Izumi Hiroto、Nishiyama Takeshi、Nakayama Atsuo、Sana Masatoshi、Morimoto Kyoko、Kaetsu Atsuo、Shirozu Takamasa、Osumi Eriko、Matsuoka Michiko、Hayakawa Eri、Maeda Nasel、Machida Junichiro、Nagao Toru、Tokita Yoshihito
    • Journal Title

      Human Genome Variation

      Volume: 10 Issue: 1

    • DOI

      10.1038/s41439-023-00230-3

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Reduction in MIR-219 expression underlies cellular pathogenesis of oligodendrocytes in a mouse model of Krabbe disease.2021

    • Author(s)
      Inamura N, Go S, Watanabe T, Takase H, Takakura N, Nakayama A, Takebayashi H, Matsuda J, Enokido Y.
    • Journal Title

      Brain Pathology

      Volume: - Issue: 5 Pages: 12951-12951

    • DOI

      10.1111/bpa.12951

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] STK25 and MST3 Have Overlapping Roles to Regulate Rho GTPases during Cortical Development2021

    • Author(s)
      Matsuki Tohru、Iio Akio、Ueda Masashi、Tsuneura Yumi、Howell Brian W.、Nakayama Atsuo
    • Journal Title

      The Journal of Neuroscience

      Volume: 41 Issue: 43 Pages: 8887-8903

    • DOI

      10.1523/jneurosci.0523-21.2021

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Knockdown of Son, a Mouse Homologue of the ZTTK Syndrome Gene, Causes Neuronal Migration Defects and Dendritic Spine Abnormalities2020

    • Author(s)
      Masashi Ueda, Tohru Matsuki, Masahide Fukada, Shima Eda, Akie Toya, Akio Iio, Hidenori Tabata, Atsuo Nakayama
    • Journal Title

      Molecular Brain

      Volume: 13 Issue: 1 Pages: 80-80

    • DOI

      10.1186/s13041-020-00622-4

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 発達障害研究が学ばせてくれたこと2024

    • Author(s)
      中山敦雄
    • Organizer
      第59回日本小児神経学会東海地方会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 神経発達障害・知的障害患者から同定されたRAB11A遺伝子多型が神経形態に与える影響2023

    • Author(s)
      常浦祐未、松木亨、榎戸靖、稲村直子、河合妙子、江田志磨、中山敦雄
    • Organizer
      日本組織培養学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] miR-219 restored oligodendrocyte development impaired in a mouse model of Krabbe disease2022

    • Author(s)
      Inamura N, Go S, Watanabe T, Takase H, Nakayama A, Takebayashi H, Matsuda J, Enokido Y
    • Organizer
      第45回日本神経科学大会
    • Related Report
      2022 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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