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神経炎症反応によって制御される脳内アミロイド代謝システムの分子機構

Publicly Offered Research

Project AreaBrain Environment
Project/Area Number 24111511
Research Category

Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Allocation TypeSingle-year Grants
Review Section Biological Sciences
Research InstitutionThe University of Tokyo

Principal Investigator

富田 泰輔  東京大学, 薬学研究科(研究院), 准教授 (30292957)

Project Period (FY) 2012-04-01 – 2014-03-31
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥11,180,000 (Direct Cost: ¥8,600,000、Indirect Cost: ¥2,580,000)
Fiscal Year 2013: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2012: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Keywordsアルツハイマー / アミロイドβ / プロテアーゼ / 分解 / スフィンゴシン1リン酸 / 受容体
Research Abstract

高齢化社会を迎え、アルツハイマー病(AD)は大きな社会問題となっている。本研究計画において、申請者はAD発症に関わるAβの産生及び分解機構を制御する脳内炎症システムに関する分子基盤の解明を目指し、研究を遂行した。特に平成25年度においてはAβを分解するシステムについて、アストロサイトとの関連に注目して解析を進めた。その結果、ヒトアストロサイトーマCCF-STTG1の培養上清にAβ分解活性が存在することを見出した。この活性はセリンプロテアーゼ阻害剤DIFPによって阻害され、さらに各種阻害剤の検索から、組織型カリクレインファミリー分子の一つKLK7がその活性を担っていることが示唆された。実際にsiRNAによるノックダウン実験や抗KLK7阻害抗体などを用いて、CCF-STTG1培養上清中のAβ分解活性にKLK7が必要であることを明らかにした。またリコンビナントタンパクを用いて、KLK7タンパクにAβ分解能が存在することも見出した。引き続き免疫染色により、KLK7が脳内においては神経細胞やアストロサイトに発現していること、特にアストロサイトに強い発現が確認された。これらの結果から、脳内におけるAβ代謝システムの一端を担う分子メカニズムとして、アストロサイトから分泌されているKLK7が想定された。今後KLK7ノックアウトマウスを用いてその重要性についてさらに検討を行う他、アストロサイトのKLK7発現を上昇させる化合物をスクリーニングし、新規AD創薬につなげていくことを考えている。

Current Status of Research Progress
Reason

25年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

25年度が最終年度であるため、記入しない。

Report

(2 results)
  • 2013 Annual Research Report
  • 2012 Annual Research Report
  • Research Products

    (55 results)

All 2014 2013 2012 Other

All Journal Article (16 results) (of which Peer Reviewed: 15 results) Presentation (36 results) (of which Invited: 18 results) Remarks (3 results)

  • [Journal Article] Differentiation of CD11c+CX3CR1+ cells in the small intestine requires Notch signaling.2014

    • Author(s)
      Ishifune C, Maruyama S, Sasaki Y, Yagita H, Hozumi K, Tomita T, Kishihara K, Yasutomo K
    • Journal Title

      Proc Natl Acad Sci USA

      Volume: 111 Issue: 16 Pages: 5986-5991

    • DOI

      10.1073/pnas.1401671111

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Decreased CALM expression reduces Aβ42 production ratio through clathrin-mediated endocytosis of Y-secretase.2014

    • Author(s)
      金津 邦彦
    • Journal Title

      Nature Communications

      Volume: 5 Issue: 1 Pages: 3386-3386

    • DOI

      10.1038/ncomms4386

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Binding of longer Aβ to transmembrane domain 1 of presenilin 1 impacts on Aβ42 generation2014

    • Author(s)
      Ohki Y, Shimada N, Osawa S, Higo T, Yokoshima S, Fukuyama T, Tomita T, Iwatsubo T.
    • Journal Title

      Molecular Neurodegeneration

      Volume: 9:7 Issue: 1 Pages: 7-7

    • DOI

      10.1186/1750-1326-9-7

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Attenuated aggregation and neurotoxicity of amyloid-beta peptide by catalytic photo-oxidation.2014

    • Author(s)
      Taniguchi A, Sasaki D, Shiohara A, Iwatsubo T, Tomita T, Sohma Y, Kanai M
    • Journal Title

      Angew Chem Int Ed Engl

      Volume: 53 Issue: 5 Pages: 1382-1385

    • DOI

      10.1002/anie.201308001

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Biophysical analysis of reciprocal allosteric interactions between gamma-secretase inhibitor and initial substrate binding sites give insight into human presenilin-1 complex function.2014

    • Author(s)
      Li Y, Hsueh-Jeng Lu S, Tsai CJ, Bohm C, Qamar S, Dodd RB, McDonald B, Meadows W, Jeoh A, McLeod A, Chen F, Arimon M, Berezovska O, Hyman BT, Tomita T, Iwatsubo T, Schmitt-Ulms, S, Fraser P, St. George-Hyslop P
    • Journal Title

      Structure

      Volume: 22 Issue: 1 Pages: 125-135

    • DOI

      10.1016/j.str.2013.09.018

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Experimental detection of proteolytic activity in a signal peptide peptidase of Arabidopsis thaliana.2013

    • Author(s)
      Hoshi, M. et al.
    • Journal Title

      BMC Biochem.

      Volume: 14 Issue: 1 Pages: 16-16

    • DOI

      10.1186/1471-2091-14-16

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] FTY720/Fingolimod, a sphingosine analogue, reduces amyloid-beta production in neurons.2013

    • Author(s)
      Takasugi N, Sasaki T, Ebinuma I, Osawa S, Isshiki H, Takeo K, Tomita T*, Iwatsubo T
    • Journal Title

      PLoS ONE

      Volume: 8

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effect of helical conformation and side-chain structure on gamma-secretase inhibition by beta-peptide foldamers: Insight into substrate recognition.2013

    • Author(s)
      Imamura Y, Umezawa N, Osawa S, Shimada N, Higo T, Yokoshima S, Fukuyama T, Iwatsubo T, Kato N, Tomita T*, Higuchi T
    • Journal Title

      J Med Chem

      Volume: 56 Pages: 1443-1454

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Protein trafficking and maturation regulates intramembrane proteolysis.2013

    • Author(s)
      Morohashi Y, Tomita T
    • Journal Title

      BBA-Biomembranes

      Volume: 1828 Issue: 12 Pages: 2855-2861

    • DOI

      10.1016/j.bbamem.2013.06.001

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Structural biology of presenilins and signal peptide peptidases.2013

    • Author(s)
      Tomita T, Iwatsubo T
    • Journal Title

      J Biol Chem

      Volume: 288 Pages: 14673-14680

    • Related Report
      2013 Annual Research Report
  • [Journal Article] Inhibition of g-secretase activity by a monoclonal antibody against the extracellular hydrophilic loop of presenilin 12013

    • Author(s)
      Shizuka Takagi-Niidome
    • Journal Title

      Biochemistry

      Volume: 52 Issue: 1 Pages: 61-69

    • DOI

      10.1021/bi301252r

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effect of Helical Conformation and Side Chain Structure on gamma-Secretase Inhibition by beta-Peptide Foldamers: Insight into Substrate Recognition.2013

    • Author(s)
      Imamura Y
    • Journal Title

      J Med Chem

      Volume: in press

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] FTY720/Fingolimod, a sphingosine analogue, reduces amyloid-beta production in neurons.2013

    • Author(s)
      Takasugi N
    • Journal Title

      PLoS ONE

      Volume: in press

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Structural biology of presenilins and signal peptide peptidases.2013

    • Author(s)
      Tomita T
    • Journal Title

      J Biol Chem

      Volume: in press

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Contribution of〓-secretase cofactors to the formation of catalytic pore of presenilin 12012

    • Author(s)
      Takeo K, Watanabe N, Tomita T, Iwatsubo T
    • Journal Title

      J Biol Chem

      Volume: 287(31) Issue: 31 Pages: 25834-25843

    • DOI

      10.1074/jbc.m111.336347

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Activity-dependent proteolytic cleavage of neuroligin-12012

    • Author(s)
      Suzuki K, Hayashi Y, Nakahara S, Kumazaki H, Prox J, Horiuchi K, Zeng M, Tanimura S, Nishiyama Y, Osawa S, Sehara-Fujisawa A, Saftig P, Yokoshima S, Fukuyama T, Matsuki N, Koyama R, Tomita T, Iwatsubo T.
    • Journal Title

      Neuron

      Volume: 76(2) Issue: 2 Pages: 410-422

    • DOI

      10.1016/j.neuron.2012.10.003

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Presentation] 自閉症関連分子Neuroliginのプロテアーゼによる代謝と機能制御2014

    • Author(s)
      名尾洋亮、塩原梓、湯本貴文、富田泰輔、岩坪威
    • Organizer
      日本薬学会第134年会
    • Place of Presentation
      熊本県、熊本市
    • Related Report
      2013 Annual Research Report
  • [Presentation] 細胞内小胞輸送を介したAβ産生制御機構の解明2014

    • Author(s)
      小島良太、宮川統爾、諸橋雄一、辻省次、富田泰輔、岩坪威
    • Organizer
      日本薬学会第134年会
    • Place of Presentation
      熊本県、熊本市
    • Related Report
      2013 Annual Research Report
  • [Presentation] グリア系培養細胞上清中に含まれるセリンプロテアーゼ様Aβ分解活性の解析2014

    • Author(s)
      建部卓也、木棚究、秋下雅弘、大内尉義、富田泰輔、岩坪威
    • Organizer
      日本薬学会第134年会
    • Place of Presentation
      熊本県、熊本市
    • Related Report
      2013 Annual Research Report
  • [Presentation] スフィンゴ脂質類似化合物FTY720及びKRP203によるアミロイドβ産生制御機構の解析2013

    • Author(s)
      高杉展正
    • Organizer
      第86回日本薬理学会年会
    • Place of Presentation
      福岡
    • Year and Date
      2013-03-21
    • Related Report
      2012 Annual Research Report
  • [Presentation] Hydrophilic loop 1 and the C terminus of presenilin 1 are involved in the initial substrate binding of the gamma-secretase.2013

    • Author(s)
      Tomita T
    • Organizer
      AD/PD 2013
    • Place of Presentation
      Florence, Italy
    • Year and Date
      2013-03-06
    • Related Report
      2012 Annual Research Report
  • [Presentation] Molecular mechanism of phenylimidazole-type gamma-secretase modulators.2013

    • Author(s)
      Takeo K
    • Organizer
      AD/PD 2013
    • Place of Presentation
      Florence, Italy
    • Year and Date
      2013-03-06
    • Related Report
      2012 Annual Research Report
  • [Presentation] セクレターゼ活性の制御によるアルツハイマー病治療薬開発2013

    • Author(s)
      富田泰輔
    • Organizer
      第29回高峰カンファレンス
    • Place of Presentation
      東京
    • Year and Date
      2013-03-01
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] Molecular mechanism of phenylimidazole-type gamma-secretase modulators.2013

    • Author(s)
      Taisuke Tomita, Koji Takeo, Shun Tanimura, Satoshi Yokoshima, Tohru Fukuyama, Takeshi Iwatsubo
    • Organizer
      CSH - ASIA Meeting, MEMBRANE PROTEIN STRUCTURE & FUNCTION
    • Place of Presentation
      Suzhou, China
    • Related Report
      2013 Annual Research Report
  • [Presentation] Identification of the structural change of Presenilin 1 associated with altered Abeta42 production.2013

    • Author(s)
      Aya Tominaga, Taisuke Tomita, Takeshi Iwatsubo
    • Organizer
      CSH - ASIA Meeting, MEMBRANE PROTEIN STRUCTURE & FUNCTION
    • Place of Presentation
      Suzhou, China
    • Related Report
      2013 Annual Research Report
  • [Presentation] Pathophysiological role of proteolytic cleavage of Neuroligins.2013

    • Author(s)
      Taisuke Tomita, Kunimichi Suzuki, Azusa Shiohara, Satoko Osawa, Takeshi Iwatsubo
    • Organizer
      AAIC2013
    • Place of Presentation
      Boston, USA
    • Related Report
      2013 Annual Research Report
  • [Presentation] FTY720/Fingolimod, a sphingosine analogue, reduces amyloid-beta production in neurons.2013

    • Author(s)
      Nobumasa Takasugi, Tomoki Sasaki, Taisuke Tomita, Takeshi Iwatsubo
    • Organizer
      AAIC2013
    • Place of Presentation
      Boston, USA
    • Related Report
      2013 Annual Research Report
  • [Presentation] CALM impacts on Abeta42 production ratio through modulation of clathrin-mediated endocytosis of gamma-secretase.2013

    • Author(s)
      Kunihiko Kanatsu, Yuichi Morohashi, Toshio Watanabe, Taisuke Tomita, Takeshi Iwatsubo
    • Organizer
      Neuroscience 2013
    • Place of Presentation
      San Diego, USA
    • Related Report
      2013 Annual Research Report
  • [Presentation] Molecular mechanism of phenylimidazole-type gamma-secretase modulators.2013

    • Author(s)
      Taisuke Tomita, Koji Takeo, Shun Tanimura, Satoshi Yokoshima, Tohru Fukuyama, Takeshi Iwatsubo
    • Organizer
      Neuroscience 2013
    • Place of Presentation
      San Diego, USA
    • Related Report
      2013 Annual Research Report
  • [Presentation] アルツハイマー病:遺伝学的・環境的リスク因子に関する実験的検証の現況2013

    • Author(s)
      岩坪威、橋本唯史、若林朋子、富田泰輔、諸橋雄一
    • Organizer
      第54回日本神経学会学術大会
    • Place of Presentation
      東京都、千代田区
    • Related Report
      2013 Annual Research Report
  • [Presentation] グリア系培養細胞上清中に含まれるセリンプロテアーゼ様Aβ分解活性の解析2013

    • Author(s)
      木棚究、秋下雅弘、大内尉義、富田泰輔、岩坪威
    • Organizer
      第32回日本認知症学会学術集会
    • Place of Presentation
      長野県、松本市
    • Related Report
      2013 Annual Research Report
  • [Presentation] Development of preemptive medicine for Alzheimer disease based on molecular basis of Abeta production and synaptic toxicity.2013

    • Author(s)
      Taisuke Tomita
    • Organizer
      Symposium “Memory Traces and Tags”
    • Place of Presentation
      Queretaro, Mexico
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] For the study of human cerebral neurodegeneration.2013

    • Author(s)
      Taisuke Tomita
    • Organizer
      Neuro2013
    • Place of Presentation
      京都府、京都市
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Biology of gamma-secretase.2013

    • Author(s)
      Taisuke Tomita
    • Organizer
      11th World Congress of Biological Psychiatry
    • Place of Presentation
      京都府、京都市
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Modulation of BACE1 activitiy by membrane environment.2013

    • Author(s)
      Taisuke Tomita
    • Organizer
      Kloster Seeon Meeting on BACE Proteases in Health and Disease
    • Place of Presentation
      Bavaria, Germany
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Mechanistic insight of the gamma-secretase-mediated intramembrane cleavage.2013

    • Author(s)
      Taisuke Tomita
    • Organizer
      8th General Meeting of the International Proteolysis Society.
    • Place of Presentation
      Cape Town, South Africa
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] PICALMがアルツハイマー病の病態形成に寄与する分子機構の解明2012

    • Author(s)
      金津邦彦
    • Organizer
      第31回日本認知症学会
    • Place of Presentation
      つくば
    • Year and Date
      2012-10-26
    • Related Report
      2012 Annual Research Report
  • [Presentation] 低分子量Gタンパク質Rab2A、Rab30によるAβ産生・分泌調節機構の解析2012

    • Author(s)
      福島正哉
    • Organizer
      第31回日本認知症学会
    • Place of Presentation
      つくば
    • Year and Date
      2012-10-26
    • Related Report
      2012 Annual Research Report
  • [Presentation] γセクレターゼ抑制薬2012

    • Author(s)
      富田泰輔
    • Organizer
      第31回日本認知症学会学術集会
    • Place of Presentation
      つくば
    • Year and Date
      2012-10-26
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] BIN1 negatively modulates Abeta production from cultured cells.2012

    • Author(s)
      Miyagawa T
    • Organizer
      Neuroscience 2012
    • Place of Presentation
      New Orleans, USA
    • Year and Date
      2012-10-13
    • Related Report
      2012 Annual Research Report
  • [Presentation] Development of pre-emptive medicine for Alzheimer disease based on molecular basis of Abeta production.2012

    • Author(s)
      Tomita T
    • Organizer
      The 17th Takeda Science Foundation Symposium on Bioscience.
    • Place of Presentation
      Osaka
    • Year and Date
      2012-10-06
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] 認知症への先制医療:アミロイド蓄積をいつ、どのように防ぐか2012

    • Author(s)
      富田泰輔
    • Organizer
      第34回日本生物学的精神医学会学術集会
    • Place of Presentation
      神戸
    • Year and Date
      2012-09-29
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] PICALM regulates Abeta42 production by modulation of gamma-secretase trafficking.2012

    • Author(s)
      Tomita T
    • Organizer
      AAIC 2012
    • Place of Presentation
      Vancouver, Canada
    • Year and Date
      2012-07-14
    • Related Report
      2012 Annual Research Report
  • [Presentation] γセクレターゼ活性制御機構の理解に基づいたアルツハイマー病治療薬開発2012

    • Author(s)
      富田泰輔
    • Organizer
      第53回日本神経学会学術集会
    • Place of Presentation
      東京
    • Year and Date
      2012-05-20
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] シナプス接着分子Neuroliginの神経活動依存性プロセシング

    • Author(s)
      富田泰輔
    • Organizer
      平成25年度生理学研究所研究会「シナプス恒常性維持の分子基盤とその破綻」
    • Place of Presentation
      愛知県、岡崎市
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] アルツハイマー病の分子病態解明:先制医療の開発に向けて

    • Author(s)
      富田泰輔
    • Organizer
      東京大学生命科学シンポジウム
    • Place of Presentation
      東京都、文京区
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] アルツハイマー病先制医療の開発に向けて:現状と展望

    • Author(s)
      富田泰輔
    • Organizer
      星薬科大学認定薬剤師研究 薬剤師生涯学習・講演会シリーズ
    • Place of Presentation
      東京都、品川区
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Structure and function relationship of intramembrane-cleaving gamma-secretase.

    • Author(s)
      Taisuke Tomita
    • Organizer
      第86回日本生化学会
    • Place of Presentation
      神奈川県、横浜市
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] 先制医療を目指したアルツハイマー病治療薬開発に向けて

    • Author(s)
      富田泰輔
    • Organizer
      第46回日本薬剤師会学術大会
    • Place of Presentation
      大阪府、大阪市
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] 先制医療の開発に向けたアルツハイマー病の分子病態解明

    • Author(s)
      富田泰輔
    • Organizer
      第57回日本薬学会関東支部大会
    • Place of Presentation
      東京都、板橋区
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Physiological and pathological roles of proteolytic processing of autism-related neuroligin proteins.

    • Author(s)
      Taisuke Tomita
    • Organizer
      New Frontier of Molecular Neuropathology 2014
    • Place of Presentation
      東京都、文京区
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] 遺伝学的アルツハイマー病リスク因子がもたらす分子病態の解明

    • Author(s)
      富田泰輔
    • Organizer
      日本薬学会第134年会
    • Place of Presentation
      熊本県、熊本市
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Remarks] 研究室ホームページ

    • URL

      http://www.f.u-tokyo.ac.jp/~neuropsc/tomita/

    • Related Report
      2013 Annual Research Report
  • [Remarks] 東京大学プレスリリース

    • URL

      http://www.u-tokyo.ac.jp/public/public01_260228_j.html

    • Related Report
      2013 Annual Research Report
  • [Remarks] 研究室ホームページ

    • URL

      http://www.f.u-tokyo.ac.jp/~neuropsc/

    • Related Report
      2012 Annual Research Report

URL: 

Published: 2013-05-15   Modified: 2019-07-29  

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