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Identification of the causative gene of hereditary spastic paraplegia

Research Project

Project/Area Number 21K07456
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52020:Neurology-related
Research InstitutionUniversity of Yamanashi

Principal Investigator

Takiyama Yoshihisa  山梨大学, 大学院総合研究部, 医学研究員 (00245052)

Co-Investigator(Kenkyū-buntansha) 下園 啓介  山梨大学, 医学部附属病院, 薬剤師 (10937949)
土屋 舞  山梨大学, 大学院総合研究部, 臨床助教 (30722615)
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遺伝性痙性対麻痺 / 新規原因遺伝子 / 分子病態 / UBAP1 / SPG80 / SPG83 / SPG15 / HSP / knock-in mouse / development of treatment / SPG4 / ZFYVE26 / HPDL
Outline of Research at the Start

遺伝性痙性対麻痺(HSP)は現在分子遺伝子学的にSPG1~SPG83に分類されこのうち70を超える原因遺伝子が同定されている。一見孤発性と思える症例もHSPであることも知られている。我々が行ったJASPACによる本邦HSPの分子疫学的検討では優性遺伝性(ADHSP)の35%と劣性遺伝性(ARHSP)の50%が原因遺伝子未同定である。本研究では、JASPACで集積している原因遺伝子未同定のADHSP家系ARHSP家系・孤発例について、新規原因遺伝子を同定してHSP発症に至る分子病態機序の解明から治療法の開発へ繋げる。

Outline of Final Research Achievements

We showed that biallelic variants in the HPDL gene cause pure and complicated hereditary spastic paraplegia (HSP) in an international collaborative study. In addition, we investigated the clinical, neuroimaging and molecular features of 44 individuals from 36 families, the largest cohort assembled to date. Furthermore, clinical and genetic studies in the REEP2 associated disorder, Chediack-Higashi syndrome, infantile-onset SPG4, monozygotic twins with SPG4, and SPG31 were reported.
We generated novel Ubap1 knock-in mouse as an animal model of SPG80, which is the first mouse model that reproduces the phenotype of SPG80. Using this animal model, we investigated to develop a treatment for HSP. The results revealed that the drug X improved gait impairment in the Ubap1 knock-in mouse in a dose-dependent manner. In the future, we would like to apply human clinical trials using the drug X as drug repositioning.

Academic Significance and Societal Importance of the Research Achievements

本研究では、遺伝性痙性対麻痺 (HSP) の新規原因遺伝子HPDLを国際共同研究としてはじめて同定することができた。HPDLはミトコンドリアに局在して神経細胞分化に関係しているが、HPDL変異により若年発症の純粋型HSPから全般性発達遅延を伴う乳児期発症HSPを引き起こすことが判明した。SPG15、SPG30については、海外あるいは国内のコホート研究を行い、臨床像、神経画像、分子遺伝学的特徴を明らかにした。
HSPの治療法開発研究では、薬剤XがSPG80のモデルマウスの歩行障害を用量依存性に改善させることをはじめて見出した。薬剤Xは、HSPの疾患修飾薬として使用できる可能性があると思われる。

Report

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

    (29 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (4 results) Journal Article (11 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 11 results,  Open Access: 4 results) Presentation (14 results) (of which Int'l Joint Research: 2 results,  Invited: 3 results)

  • [Int'l Joint Research] Boston Children's Hospital(米国)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] Friedrich-Baur-Institute(ドイツ)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] University College London(英国)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Karolinska Institutet(スウェーデン)

    • Related Report
      2021 Research-status Report
  • [Journal Article] <scp><i>SPTLC2</i></scp> variants are associated with early‐onset <scp>ALS</scp> and <scp>FTD</scp> due to aberrant sphingolipid synthesis2024

    • Author(s)
      Naruse H、Ishiura H、Takiyama Y、Morishita S、Tsuji S、Toda T, et al.
    • Journal Title

      Annals of Clinical and Translational Neurology

      Volume: - Issue: 4 Pages: 946-957

    • DOI

      10.1002/acn3.52013

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Hereditary sensory and autonomic neuropathy 1E showing hyperreflexia: a case report2024

    • Author(s)
      Hayashida Hitoshi、Arita Yukimasa、Koh Kishin、Takiyama Yoshihisa、Ikezoe Koji
    • Journal Title

      Rinsho Shinkeigaku

      Volume: 64 Issue: 4 Pages: 286-291

    • DOI

      10.5692/clinicalneurol.cn-001938

    • ISSN
      0009-918X, 1882-0654
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A case of monozygotic twins with hereditary spastic paraplegia type 4 and epilepsy, of whom only one developed narcolepsy type 12023

    • Author(s)
      Mizuno Y、Uehara T、Nakamura Y、Okadome T、Mukaino T、Takiyama Y、Kira Jun‐ichi, et al.
    • Journal Title

      Journal of Sleep Research

      Volume: - Issue: 4

    • DOI

      10.1111/jsr.14102

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ubap1 knock-in mice reproduced the phenotype of SPG802022

    • Author(s)
      Shimozono K, Nan H, Takiyama Y, et al.
    • Journal Title

      Journal of Human Genetics

      Volume: 67 Issue: 12 Pages: 679-686

    • DOI

      10.1038/s10038-022-01073-6

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The clinical and molecular spectrum of <i>ZFYVE26</i>-associated hereditary spastic paraplegia: SPG152022

    • Author(s)
      Safari A, Kellner M, Takiyama Y, et al.
    • Journal Title

      Brain

      Volume: on line ahead of print Issue: 5 Pages: 2003-2015

    • DOI

      10.1093/brain/awac391

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Chediak-Higashi syndrome presenting as a hereditary spastic paraplegia.2022

    • Author(s)
      Koh K, Tsuchiya M, Ishiura H, Shimazaki H, Nakamura T, Hara H, Suzuyama K, Takahashi M, Tsuji S, Takiyama Y, JASPAC.
    • Journal Title

      J Hum Genet

      Volume: 67 Issue: 2 Pages: 119-121

    • DOI

      10.1038/s10038-021-00977-z

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] A p.Glu420Gln mutation in SPAST is associated with infantile onset spastic paraplegia complicated by cerebellar ataxia, epilepsy, peripheral neuropathy, and hypoplasia of the corpus callosum.2022

    • Author(s)
      Nan H, Mizuno T, Arisaka A, Sei K, and Takiyama Y
    • Journal Title

      Neurol Sci

      Volume: 43 Issue: 3 Pages: 2123-2126

    • DOI

      10.1007/s10072-022-05879-2

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] A clinical and genetic study of SPG31 in Japan.2022

    • Author(s)
      Hata T, Nan H, Koh K, Ishiura H, Tsuji S, and Takiyama Y
    • Journal Title

      J Hum Genet

      Volume: online ahead of print Issue: 7 Pages: 421-425

    • DOI

      10.1038/s10038-022-01021-4

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Biallelic variants in HPDL cause pure and complicated hereditary spastic paraplegia2021

    • Author(s)
      Wiessner M, Suzuki Y, Koh K, Nan H, Ishiura H, Tsuji S, Takiyama Y, Baets J, Synofzik M, Sch&#252;le R, Horvath R, Houlden H, Bartesaghi L, Lee HJ, Ampatzis K, Pierson TM, Senderek J.
    • Journal Title

      Brain

      Volume: - Issue: 5 Pages: 1422-1434

    • DOI

      10.1093/brain/awab041

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A Nepalese family with an REEP2 mutation: clinical and genetic study2021

    • Author(s)
      Nan Haitian、Takaki Ryusuke、Hata Takanori、Koh Kishin、Takiyama Yoshihisa
    • Journal Title

      Journal of Human Genetics

      Volume: - Issue: 7 Pages: 1-4

    • DOI

      10.1038/s10038-020-00882-x

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A p.Arg499His mutation in SPAST is associated with infantile-onset complicated spastic paraplegia: a case report and review of the literature.2021

    • Author(s)
      Nan H, Shiraku H, Mizuno T, and Takiyama Y
    • Journal Title

      BMC Neurol

      Volume: 21 Issue: 1 Pages: 439-439

    • DOI

      10.1186/s12883-021-02478-0

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Ubap1ノックインマウスを用いた遺伝性痙性対麻痺の治療法開発2024

    • Author(s)
      下園啓介、南 海天、磯野藤男、岩崎 甫、上野祐司、瀧山嘉久
    • Organizer
      厚生労働省令和5年度運動失調班班会議
    • Related Report
      2023 Annual Research Report
  • [Presentation] Variants in SPTAN1 in patients with hereditary spastic paraplegia.2023

    • Author(s)
      Ishiura H, Mano T, Sudo A, Koh K, Takiyama Y, JASPAC, Matsukawa T, Mitsui J, Tsuji S, Toda T.
    • Organizer
      The 64th Annual Meeting of the Japanese Society of Neurology
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 深部感覚優位の感覚障害および腱反射亢進を呈したhereditary sensory and autonomic neuropathy (HSAN1E) の1例2023

    • Author(s)
      林田仁志、有田行正、桑垣詩織、高 紀信、瀧山嘉久、池添浩二
    • Organizer
      第113回日本神経学会中国・四国地方会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ヘテロ接合性GRID2遺伝子変異による純粋小脳型優性遺伝性脊髄小脳失調症の一家系2022

    • Author(s)
      高 紀信、嶋崎晴雄、小川松夫、瀧山嘉久
    • Organizer
      第63回日本神経学会総会学術大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 遺伝性痙性対麻痺の遺伝学-update2022

    • Author(s)
      髙 紀信、石浦浩之、辻 省次、瀧山嘉久、JASPAC
    • Organizer
      第63回日本神経学会総会学術大会シンポジウム
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 幼児発症の複合型SPG4の二症例2022

    • Author(s)
      白久 博、水野朋子、南 海天、瀧山嘉久
    • Organizer
      第64回日本小児神経学会学術集会
    • Related Report
      2022 Research-status Report
  • [Presentation] Landscape of HSPs in Japan and Japan Spastic Paraplegia Research Consortium (JASPAC)2022

    • Author(s)
      Ishiura H, Koh K, Takiyama Y, Toda T, Tsuji S
    • Organizer
      TWS Symposium 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] LYST遺伝子変異 (Chediak-Higashi症候群) は痙性対麻痺を呈する.2021

    • Author(s)
      土屋 舞、高 紀信、石浦浩之、嶋崎晴雄、中村 毅、鈴山耕平、原 英夫、高橋牧郎、辻 省次、瀧山嘉久、JASPAC
    • Organizer
      第62回日本神経学会学術大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 遺伝性痙性対麻痺の病態と治療.2021

    • Author(s)
      一瀬佑太、高 紀信、南 海天、石浦浩之、三井 純、戸田達史、辻 省次、瀧山嘉久、JASPAC
    • Organizer
      第62回日本神経学会学術大会 (ホットトピックス)
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 本邦におけるSPG31の臨床・分子遺伝学的検討.2021

    • Author(s)
      羽田貴礼、高 紀信、一瀬佑太、土屋 舞、長坂高村、新藤和雅、石浦浩之、辻 省次、瀧山嘉久、JASPAC
    • Organizer
      第62回日本神経学会学術大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 当施設の遺伝子解析にてSACS遺伝子のバリアントが同定された日本人症例の臨床的特徴.2021

    • Author(s)
      嶋崎晴雄、小川朋子、高 紀信、山本洋一、津川 潤、村上千恵子、本多正幸、黒川克朗、岩永育貴、横田光晴、瀧山嘉久、JASPAC
    • Organizer
      第62回日本神経学会学術大会
    • Related Report
      2021 Research-status Report
  • [Presentation] REEP2遺伝子変異 (SPG72) 家系の臨床・分子遺伝学的検討.2021

    • Author(s)
      高木隆助、南 海天、羽田貴礼、高 紀信、瀧山嘉久
    • Organizer
      第62回日本神経学会学術大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 痙性対麻痺のITB療法に関する全国多施設共同研究.2021

    • Author(s)
      一瀬佑太、高 紀信、石浦浩之、戸田達史、松瀬 大、水上平祐、山野嘉久、辻 省次、瀧山嘉久
    • Organizer
      第62回日本神経学会学術大会
    • Related Report
      2021 Research-status Report
  • [Presentation] GBA2遺伝子に変異を認めSPG46と診断した1兄妹例の検討.2021

    • Author(s)
      進藤桂子、小野賢二郎、白崎弘恵、柳瀬大亮、高 紀信、石浦浩之、辻 省次、瀧山嘉久、山田正仁
    • Organizer
      第62回日本神経学会学術大会
    • Related Report
      2021 Research-status Report

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

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