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Analysis of physicochemical features of the amyloid-nuclei forming alpha-synuclein from fibril formation kinetics

Research Project

Project/Area Number 21K15245
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 47020:Pharmaceutical analytical chemistry and physicochemistry-related
Research InstitutionKyoto Pharmaceutical University

Principal Investigator

Ohgita Takashi  京都薬科大学, 薬学部, 助教 (80737263)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2023: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsαシヌクレイン / アミロイド線維 / 凝集核 / パーキンソン病 / シヌクレイノパチー / 神経変性疾患 / アミロイド凝集核 / アミロイド / 二次核形成
Outline of Research at the Start

αシヌクレインが異常構造をとって会合したアミロイド凝集核は、強い神経毒性と構造伝播性をもち、パーキンソン病などの神経変性疾患を引き起こす。しかし、疾患の治療標的となる凝集核は、過渡的かつ不安定な構造体であるために構造情報がほとんど得られていない。
本研究では、アミロイド凝集に伴ったαシヌクレインの構造変化を、部位特異的蛍光ラベル化等の物理化学的手法を用いて追跡・評価することで、異常型αシヌクレインの構造特性を明らかにする。これにより、αシヌクレイン関連神経変性疾患に対する診断・治療薬の設計基盤の確立に貢献する。

Outline of Final Research Achievements

In this study, the structural feature of amyloid-nuclei of alpha-synuclein (aS), a Parkinson's disease-related intraneuronal protein, was estimated from its fibril formation kinetics. The significant results are 1) unraveling the mechanism of accelerated nucleation of aS by the Parkinson's disease-related N-terminal mutations and the C-terminal truncations, 2) identification of the role of S87 residue of aS as the hotspot residue for regulating fibril formation, and 3) elucidating the correlation between protein hydrophobicity and the amounts of nuclei formed during lag phase. These findings advance the understanding of the nucleation mechanism of aS and provide clues for developing nucleation inhibitors for Parkinson's disease therapy.

Academic Significance and Societal Importance of the Research Achievements

αシヌクレイン凝集核はパーキンソン病の主要病原因子であるが、不安定な構造体であるために物性解析が難しく、これを標的とした治療分子は設計できていない。本研究で得られたαシヌクレインの凝集核形成メカニズムに関する知見は、凝集核の形成を制御する分子の設計基盤となりうる情報であり、凝集核形成阻害を機序とするパーキンソン病根治薬の開発に貢献する。

Report

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

    (30 results)

All 2024 2023 2022 2021

All Journal Article (12 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 12 results,  Open Access: 11 results) Presentation (18 results)

  • [Journal Article] Host-to-graft propagation of inoculated α-synuclein into transplanted human induced pluripotent stem cell-derived midbrain dopaminergic neurons2024

    • Author(s)
      Gima Serina、Oe Kazuya、Nishimura Kaneyasu、Ohgita Takashi、Ito Haruka、Kimura Hiroyuki、Saito Hiroyuki、Takata Kazuyuki
    • Journal Title

      Regenerative Therapy

      Volume: 25 Pages: 229-237

    • DOI

      10.1016/j.reth.2023.12.019

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Generation of novel anti‐apo<scp>E</scp> monoclonal antibodies that selectively recognize apo<scp>E</scp> isoforms2024

    • Author(s)
      Ohgita Takashi、Sakai Koto、Fukui Nodoka、Namba Norihiro、Nakano Miyu、Kiguchi Yuki、Morita Izumi、Oyama Hiroyuki、Yamaki Kouya、Nagao Kohjiro、Kobayashi Norihiro、Saito Hiroyuki
    • Journal Title

      FEBS Letters

      Volume: in press. Issue: 8 Pages: 902-914

    • DOI

      10.1002/1873-3468.14858

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Physicochemical mechanisms of aggregation and fibril formation of α-synuclein and apolipoprotein A-I2024

    • Author(s)
      Ohgita Takashi、Kono Hiroki、Namba Norihiro、Saito Hiroyuki
    • Journal Title

      Biophysics and Physicobiology

      Volume: 21 Issue: 1 Pages: n/a

    • DOI

      10.2142/biophysico.bppb-v21.0005

    • ISSN
      2189-4779
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Plantainoside B in <i>Bacopa monniera</i> Binds to Aβ Aggregates Attenuating Neuronal Damage and Memory Deficits Induced by Aβ2023

    • Author(s)
      Fukuda Aina、Nakashima Souichi、Oda Yoshimi、Nishimura Kaneyasu、Kawashima Hidekazu、Kimura Hiroyuki、Ohgita Takashi、Kawashita Eri、Ishihara Keiichi、Hanaki Aoi、Okazaki Mizuki、Matsuda Erika、Tanaka Yui、Nakamura Seikou、Matsumoto Takahiro、Akiba Satoshi、Saito Hiroyuki、Matsuda Hisashi、Takata Kazuyuki
    • Journal Title

      Biological and Pharmaceutical Bulletin

      Volume: 46 Issue: 2 Pages: 320-333

    • DOI

      10.1248/bpb.b22-00797

    • ISSN
      0918-6158, 1347-5215
    • Year and Date
      2023-02-01
    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Intramolecular interaction kinetically regulates fibril formation by human and mouse α-synuclein2023

    • Author(s)
      Ohgita Takashi、Kono Hiroki、Morita Izumi、Oyama Hiroyuki、Shimanouchi Toshinori、Kobayashi Norihiro、Saito Hiroyuki
    • Journal Title

      Scientific Reports

      Volume: 13 Issue: 1 Pages: 10885-10885

    • DOI

      10.1038/s41598-023-38070-4

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Amyloidogenic 60?71 deletion/ValThr insertion mutation of apolipoprotein A-I generates a new aggregation-prone segment that promotes nucleation through entropic effects2023

    • Author(s)
      Namba Norihiro、Ohgita Takashi、Tamagaki-Asahina Hiroko、Nishitsuji Kazuchika、Shimanouchi Toshinori、Sato Takeshi、Saito Hiroyuki
    • Journal Title

      Scientific Reports

      Volume: 13 Issue: 1 Pages: 18514-18514

    • DOI

      10.1038/s41598-023-45803-y

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Structural flexibility of apolipoprotein E-derived arginine-rich peptides improves their cell penetration capability2023

    • Author(s)
      Takechi-Haraya Yuki、Ohgita Takashi、Usui Akiko、Nishitsuji Kazuchika、Uchimura Kenji、Abe Yasuhiro、Kawano Ryuji、Konaklieva Monika I.、Reimund Mart、Remaley Alan T.、Sato Yoji、Izutsu Ken-ichi、Saito Hiroyuki
    • Journal Title

      Scientific Reports

      Volume: 13 Issue: 1 Pages: 19396-19396

    • DOI

      10.1038/s41598-023-46754-0

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Mechanisms of enhanced aggregation and fibril formation of Parkinson’s disease-related variants of α-synuclein.2022

    • Author(s)
      Ohgita T., Namba N., Kono H., Shimanouchi T., and Saito H.
    • Journal Title

      Sci. Rep.

      Volume: 12 Issue: 1 Pages: 6770-6770

    • DOI

      10.1038/s41598-022-10789-6

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Design and Synthesis of 6-O-Phosphorylated Heparan Sulfate Oligosaccharides to Inhibit Amyloid β Aggregation.2022

    • Author(s)
      Uchimura K., Nishitsuji K, Chiu L.-T., Ohgita T., Saito H., Allain F., Gannedi V., Wong C.-H., and Hung S.-C.
    • Journal Title

      ChemBioChem

      Volume: 23 Issue: 15 Pages: 4543-4543

    • DOI

      10.1002/cbic.202200191

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Novel conformation‐selective monoclonal antibodies against apoA‐I amyloid fibrils2021

    • Author(s)
      Takashi Ohgita, Yuki Furutani, Miyu Nakano, Megumi Hattori, Ayane Suzuki, Miho Nakagawa, Sera Naniwa, Izumi Morita, Hiroyuki Oyama, Kazuchika Nishitsuji, Norihiro Kobayashi, Hiroyuki Saito
    • Journal Title

      FEBS Journal

      Volume: 288 Issue: 5 Pages: 1496-1513

    • DOI

      10.1111/febs.15487

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cell-to-cell transmission of p53 aggregates: a novel player in oncology?2021

    • Author(s)
      Naoyuki Iwahashi, Midori Ikezaki, Hiroyuki Saito, Kenji Uchimura, Kazuchika Nishitsuji
    • Journal Title

      Molecular & cellular oncology

      Volume: 8 Issue: 2 Pages: 1892444-1892444

    • DOI

      10.1080/23723556.2021.1892444

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Mechanisms of Aggregation and Amyloid Fibril Formation of Apolipoproteins on Lipid Membranes2021

    • Author(s)
      Mizuguchi Chiharu、Ohgita Takashi、Saito Hiroyuki
    • Journal Title

      MEMBRANE

      Volume: 46 Issue: 1 Pages: 25-31

    • DOI

      10.5360/membrane.46.25

    • NAID

      130007977581

    • ISSN
      0385-1036, 1884-6440
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] カイロミクロンタンパク質apoA-IVのアミロイド線維形成の物理化学的メカニズム2024

    • Author(s)
      南波憲宏、段上時子、北川裕一朗、扇田隆司、島内寿徳、斎藤博幸
    • Organizer
      日本薬学会第144年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] アポリポタンパク質E由来両親媒性ペプチドの脂質膜相互作用および細胞通過へ及ぼすコンフォメーション制限の影響2024

    • Author(s)
      原矢佑樹、扇田隆司、臼井明子、西辻和親、内村健治、阿部康弘、川野竜司、Monika I. Konaklieva , Mart Reimund , Alan T. Remaley , 佐藤陽治、伊豆津健一、斎藤博幸
    • Organizer
      日本薬学会第144年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] パーキンソン病αシヌクレインの凝集・線維化に対する脂質膜組成の影響2024

    • Author(s)
      河野弘樹、南波憲宏、扇田隆司、長尾耕治郎、斎藤博幸
    • Organizer
      日本薬学会第144年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] カイロミクロンタンパク質apoA-IV のN 末フラグメントは強いアミロイド凝集特性を有する2023

    • Author(s)
      北川裕一朗、内藤禎人、南波憲宏、扇田隆司、斎藤博幸
    • Organizer
      第73回日本薬学会関西支部大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Amyloidogenic mutation of the N-terminal fragment of apolipoprotein A-I generates a new aggregation-prone segment that acts as an entropic driver of aggregation2023

    • Author(s)
      Norihiro Namba , Takashi Ohgita , Hiroko Tamagaki-Asahina , Toshinori Shimanouchi , Takeshi Sato , Hiroyuki Saito
    • Organizer
      第60回ペプチド討論会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 環境感受性蛍光プローブ標識による パーキンソン病αシヌクレインの脂質膜結合挙動の解析2023

    • Author(s)
      河野弘樹、南波憲宏、扇田隆司、斎藤博幸
    • Organizer
      第13回京都四大学連携研究フォーラム
    • Related Report
      2023 Annual Research Report
  • [Presentation] 脳に生着したヒトiPS細胞由来神経細胞へのα-シヌクレイン伝播の組織学的評価2023

    • Author(s)
      西村周泰、儀間芹菜、扇田隆司、斎藤博幸、高田和幸
    • Organizer
      第97回 日本薬理学会年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] アミロイド形成タンパク質の凝集核形成特性の速度論的評価2023

    • Author(s)
      扇田隆司、南波憲宏、河野弘樹、斎藤博幸
    • Organizer
      日本薬学会第143年会
    • Related Report
      2022 Research-status Report
  • [Presentation] 脂質膜環境におけるヒト及びマウスαシヌクレインの凝集・線維化挙動2022

    • Author(s)
      扇田隆司、河野弘樹、島内寿徳、斎藤博幸
    • Organizer
      膜シンポジウム2022
    • Related Report
      2022 Research-status Report
  • [Presentation] ヒトとマウスのαシヌクレインの比較による線維化制御機構の解析2022

    • Author(s)
      扇田隆司、河野弘樹、森田いずみ、大山浩之、島内寿徳、小林典裕、斎藤博幸
    • Organizer
      第43回生体膜と薬物の相互作用シンポジウム
    • Related Report
      2022 Research-status Report
  • [Presentation] アポEアイソフォームを特異的に検出可能なイムノアッセイ系の構築2022

    • Author(s)
      坂井瑚都、中野未悠、扇田隆司、木口裕貴、森田いずみ、大山浩之、長尾耕治郎、小林典裕、斎藤博幸
    • Organizer
      第12回京都四大学連携研究フォーラム
    • Related Report
      2022 Research-status Report
  • [Presentation] αシヌクレインの線維化及び細胞毒性に対する高凝集性領域の寄与2022

    • Author(s)
      河野弘樹、鎌田真央、南波憲宏、扇田隆司、森田いずみ、大山浩之、長尾耕治郎、小林典裕、斎藤博幸
    • Organizer
      第72回薬学会関西支部大会
    • Related Report
      2022 Research-status Report
  • [Presentation] アミロイドーシス変異apoA-Iの凝集・線維化過程の速度論的・熱力学的解析2022

    • Author(s)
      南波憲宏、扇田隆司、島内寿徳、斎藤博幸
    • Organizer
      日本薬学会第142年会
    • Related Report
      2021 Research-status Report
  • [Presentation] ヒト及びマウスαシヌクレインの凝集・線維形成性に対するN末側変異の影響2022

    • Author(s)
      河野弘樹、鎌田真央、扇田隆司、斎藤博幸
    • Organizer
      日本薬学会第142年会
    • Related Report
      2021 Research-status Report
  • [Presentation] 新規抗アポEモノクローナル抗体を用いたアポEアイソフォーム特異的検出系の構築2022

    • Author(s)
      坂井瑚都、中野未悠、扇田隆司、森田いずみ、大山浩之、小林典裕、斎藤博幸
    • Organizer
      日本薬学会第142年会
    • Related Report
      2021 Research-status Report
  • [Presentation] αシヌクレインのβ構造転移・線維化に対するホスファチジルセリンの影響2021

    • Author(s)
      扇田隆司、南波憲宏、河野弘樹、島内寿德、斎藤博幸
    • Organizer
      日本膜学会第43年会
    • Related Report
      2021 Research-status Report
  • [Presentation] パーキンソン病関連変異とC末欠損によるαシヌクレインのアミロイド線維化促進機構の速度論的解析2021

    • Author(s)
      扇田隆司、南波憲宏、河野弘樹、島内寿徳、斎藤博幸
    • Organizer
      第18回次世代を担う若手のためのフィジカル・ファーマフォーラム
    • Related Report
      2021 Research-status Report
  • [Presentation] αシヌクレインのアミロイド線維形成に対するパーキンソン病関連変異とC末欠損の影響2021

    • Author(s)
      扇田隆司、南波憲宏、河野弘樹、島内寿徳、斎藤博幸
    • Organizer
      第42回生体膜と薬物の相互作用シンポジウム
    • Related Report
      2021 Research-status Report

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

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