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Visual function recovery by gene therapy targeting axon regeneration and remyelination

Research Project

Project/Area Number 21K09688
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56060:Ophthalmology-related
Research InstitutionTokyo Metropolitan Institute of Medical Science

Principal Investigator

GUO Xiaoli  公益財団法人東京都医学総合研究所, 疾患制御研究分野, 主席研究員 (50443114)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords多発性硬化症 / ASK1 / グリア細胞 / TrkB / 遺伝子治療 / 軸索再生 / 神経保護 / 再髄鞘化 / EAE / ミクログリア / アストロサイト / 神経細胞の保護 / 脊髄炎 / 正常眼圧緑内障モデルマウス / 樹状突起 / 緑内障 / 視神経炎 / 神経栄養因子受容体 / GLAST欠損マウス
Outline of Research at the Start

網膜と視神経の神経変性疾患に根本的な治療法は確立されていない。もし神経再生による治療が可能となれば、病気の進行抑制だけでなくその機能回復も期待できる。本研究では、遺伝子治療用ベクターの開発により神経ネットワークの再生を促進させ、視機能を回復させることを目的とする。そのために、透明化組織を用いた立体画像による病理解析や遺伝子改変マウスなどの新たなツールを活用して、神経保護や軸索再生と再髄鞘化療法の可能性に挑戦する。本研究から得られた知見は、様々な神経変性疾患の再生治療に対しても有益な成果となることが期待される。

Outline of Final Research Achievements

We found that neuroinflammation was reduced in both the early and later stages of EAE in microglia/macrophage-specific ASK1 knockout mice, whereas only the later stage neuroinflammation was ameliorated in astrocyte-specific ASK1 knockout mice. By using post-mortem multiple sclerosis tissue, ASK1 activation was found in active lesions of corpus callosum in both microglia/macrophages and astrocytes. Moreover, ASK1 activation in astrocytes was higher than that in microglia/macrophages, which were in line with our findings in EAE mice.
We invented a system (iTrkB) that results in constitutive activation without TrkB's ligands. iTrkB expression enhances neuroprotection in mouse models of glaucoma and stimulates robust axon regeneration after optic
nerve injury. In addition, iTrkB expression in the retina was also effective in an optic tract transection model, in which regenerating axons successfully formed pathways to their brain targets, resulting in partial recovery of visual behavior.

Academic Significance and Societal Importance of the Research Achievements

ASK1の細胞特異的な機能や既存薬剤による治療研究から網膜および視神経変性疾患など難病の発症メカニズムを
解明し、治療法の開発に有用な情報を提供した。特にMSによる視神経変性に対する治療薬の開発に有用である。
また緑内障の新たな治療法として常時活性型TrkB遺伝子治療システムを開発し報告した。このシステムは他の常時活性型受容体の作製にも活用できており汎用性がある。研究成果はPNASやMolecular therapyなどの学術誌に載せいた他、研究所HP、都立病院との共同研究会や産学連携研究会でも紹介し、研究成果を積極的に社会に公開する。

Report

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

    (23 results)

All 2024 2023 2022 2021 Other

All Journal Article (7 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 6 results,  Open Access: 6 results) Presentation (15 results) (of which Int'l Joint Research: 10 results,  Invited: 3 results) Remarks (1 results)

  • [Journal Article] Drug combination of topical ripasudil and brimonidine enhances neuroprotection in a mouse model of optic nerve injury2024

    • Author(s)
      Namekata Kazuhiko、Noro Takahiko、Nishijima Euido、Sotozono Akiko、Guo Xiaoli、Harada Chikako、Shinozaki Youichi、Mitamura Yoshinori、Nakano Tadashi、Harada Takayuki
    • Journal Title

      Journal of Pharmacological Sciences

      Volume: 154 Issue: 4 Pages: 326-333

    • DOI

      10.1016/j.jphs.2024.02.011

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Neuroprotection and axon regeneration by novel low-molecular-weight compounds through the modification of DOCK3 conformation2023

    • Author(s)
      Namekata Kazuhiko、Tsuji Naoki、Guo Xiaoli、Nishijima Euido、Honda Sari、Kitamura Yuta、Yamasaki Atsushi、Kishida Masamichi、Takeyama Jun、Ishikawa Hirokazu、Shinozaki Youichi、Kimura Atsuko、Harada Chikako、Harada Takayuki
    • Journal Title

      Cell Death Discovery

      Volume: 9 Issue: 1 Pages: 1-8

    • DOI

      10.1038/s41420-023-01460-8

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Vision protection and robust axon regeneration in glaucoma models by membrane-associated Trk receptors.2023

    • Author(s)
      Nishijima E, Honda S, Kitamura Y, Namekata K, Kimura A, Guo X, Azuchi Y, Harada C, Murakami A, Matsuda A, Nakano T, Parada LF, Harada T.
    • Journal Title

      Mol Ther.

      Volume: 31 Issue: 3 Pages: 810-824

    • DOI

      10.1016/j.ymthe.2022.11.018

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effects of constitutively active K-Ras on axon regeneration after optic nerve injury2023

    • Author(s)
      Kiyota Naoki、Namekata Kazuhiko、Nishijima Euido、Guo Xiaoli、Kimura Atsuko、Harada Chikako、Nakazawa Toru、Harada Takayuki
    • Journal Title

      Neuroscience Letters

      Volume: 799 Pages: 137124-137124

    • DOI

      10.1016/j.neulet.2023.137124

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] ASK1 signaling regulates phase-specific glial interactions during neuroinflammation2022

    • Author(s)
      Guo Xiaoli、Kimura Atsuko、Namekata Kazuhiko、Harada Chikako、Arai Nobutaka、Takeda Kohsuke、Ichijo Hidenori、Harada Takayuki
    • Journal Title

      Proceedings of the National Academy of Sciences

      Volume: 119 Issue: 6

    • DOI

      10.1073/pnas.2103812119

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of lighting environment on the degeneration of retinal ganglion cells in glutamate/aspartate transporter deficient mice, a mouse model of normal tension glaucoma2022

    • Author(s)
      Ohashi Tsutomu、Namekata Kazuhiko、Guo Xiaoli、Kimura Atsuko、Harada Chikako、Harada Takayuki
    • Journal Title

      Biochemistry and Biophysics Reports

      Volume: 29 Pages: 101197-101197

    • DOI

      10.1016/j.bbrep.2021.101197

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] リパスジル点眼は視神経損傷後の成体マウスにおいて神経保護と軸索再生を促進する2021

    • Author(s)
      3.西島義道、行方和彦、木村敦子、郭 暁麗、原田知加子、野呂隆彦、中野 匡、原田高幸
    • Journal Title

      日本眼科学会雑誌

      Volume: 125 Pages: 82-82

    • Related Report
      2021 Research-status Report
  • [Presentation] Neuroprotection and axon regeneration in glaucoma models by gene therapy using modified tyrosine kinase receptors2023

    • Author(s)
      Harada T, Namekata K, Sotozono A, Shinozaki Y, Guo X, Harada C.
    • Organizer
      26th EVER CONGRESS
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 改変型インスリン受容体の遺伝子治療による網膜神経保護と視神経再生2023

    • Author(s)
      外園晶子、行方和彦、郭 曉麗、篠崎陽一、野呂隆彦、中野匡、原田高幸
    • Organizer
      第34回日本緑内障学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Dendrite regeneration of retinal ganglion cells by gene therapy using a constitutive active form of insulin receptor.2023

    • Author(s)
      Sotozono A, Namekata K, Guo X, Noro T, Nakano T, Harada T.
    • Organizer
      10th World Glaucoma Congress meeting
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] インスリン受容体の遺伝子治療による網膜神経節細胞の樹状突起再生2023

    • Author(s)
      外園晶子、郭 暁麗、行方和彦、野呂隆彦、中野匡、原田高幸
    • Organizer
      第127回日本眼科学会総会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Oxidative stress-responsive gene ASK1 in retinal and optic nerve degeneration.2022

    • Author(s)
      Xiaoli Guo
    • Organizer
      ARVO2022 meeting
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Constitutively active Ras promotes protection and axon regeneration in retinal ganglion cells after optic nerve injury2022

    • Author(s)
      Kiyota N., Namekata K., Guo X., Kimura A., Nakazawa T. and Harada T.
    • Organizer
      ARVO2022 meeting
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] The Renin-Angiotensin System Regulates Neurodegeneration in a Mouse Model of Optic Neuritis.2021

    • Author(s)
      Xiaoli Guo, Namekata K, Kimura A, Harada C, Harada T.
    • Organizer
      3rd Annual Global Conference on Neuroscience and Neurology
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Pathogenic roles of glial ASK1 signaling in neuroinflammation2021

    • Author(s)
      Xiaoli Guo, Kimura A, Namekata K, Harada C, Harada T.
    • Organizer
      ARVO2021 meeting
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] AAV-mediated delivery of constitutively active TrkB promotes CNS axon regeneration and neuroprotection2021

    • Author(s)
      Atsuko Kimura, Nishijima E, Kitamura Y, Honda S, Guo X, Harada C, Namekata K, Harada T.
    • Organizer
      Neuroscience Meeting 2021 Chicago
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Microglial DOCK8 and neurodegeneration2021

    • Author(s)
      Atsuko Kimura, Namekata K, Guo X, Arai N, Harada C, Harada T.
    • Organizer
      The 4th International Conference on Applied Biochemistry and Biotechnology
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Gene therapy with modified TrkB induces neuroprotection and axon regeneration2021

    • Author(s)
      Atsuko Kimura, Nishijima E, Kitamura Y, Honda S, Guo X, Harada C, Namekata K, Harada T.
    • Organizer
      第44回日本神経科学大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 活性型TrkBを活用した遺伝子治療による神経保護と軸索再生2021

    • Author(s)
      行方和彦、西島義道、北村裕太、本田紗里、郭 曉麗、木村敦子、原田知加子、原田高幸.
    • Organizer
      第94回日本生化学会大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 網膜TrkB受容体が成熟個体における網膜神経節細胞の生存に与える影響2021

    • Author(s)
      北村裕太、行方和彦、木村敦子、郭 暁麗、山本修一、原田高幸.
    • Organizer
      第125回日本眼科学会総会
    • Related Report
      2021 Research-status Report
  • [Presentation] Gene therapy with mutant TrkB receptor protects retinal ganglion cell and retinal function in a mouse model of normal tension glaucoma2021

    • Author(s)
      Nishijima E, Honda S, Namekata K, Kimura A, Guo X, Harada C, Nakano T, Harada T.
    • Organizer
      World Glaucoma Congress 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Gene therapy with mutant TrkB receptors protects retinal neurons and promotes optic nerve regeneration without ligands2021

    • Author(s)
      7.Nishijima E, Namekata K, Kimura A, Kitamura Y, Honda S, Guo X, Harada C, Nakano T, Harada T.
    • Organizer
      ARVO2021 meeting
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Remarks] ASK1シグナルは神経炎症におけるグリア間相互作用を病期特異的に制御する

    • URL

      https://www.igakuken.or.jp/topics/2022/0201.html

    • Related Report
      2022 Research-status Report 2021 Research-status Report

URL: 

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

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