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Mechanisms of cell size control during normal and abnormal neural development

Research Project

Project/Area Number 16K07053
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Neurochemistry/Neuropharmacology
Research InstitutionNiigata University

Principal Investigator

Nobuyuki Takei  新潟大学, 脳研究所, 准教授 (70221372)

Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
KeywordsmTOR / 細胞サイズ / 神経幹細胞 / 神経分化 / 脳形成異常 / シグナル伝達 / 蛋白合成 / 神経細胞 / デコイ / 細部サイズ / neural stem cell / 神経栄養因子 / iPS / 神経発達 / 神経科学 / 細胞・組織 / 脳・神経
Outline of Final Research Achievements

The activity of mTORC1, a master regulator of cell growth, was high in proliferating rat and human neural stem cells (NSCs), decreased after mitotic arrest, and increased again in differentiated and matured neurons. Introducing active mutant of mTOR into NSCs results cell enlargement and dysplasia after induction of differentiation. It is considered the cellar base of brain malformation. We developed the molecular decoys that specifically inhibits mTORC1 and 2, respectively. Forced expression of these decoys into NSCs induced morphological abnormalities. These results revealed that mTOR is deeply involved in the regulation of cell size and morphology in neural differentiation.

Academic Significance and Societal Importance of the Research Achievements

神経分化に伴う突起伸展などの形態変化に比べ、細胞のサイズ制御機構に関してはこれまでほとんど研究されていなかった。本研究からmTOR(mammalian target of rapamycin)がその制御に重要な役割を果たしていることが明らかとなった。さらに2つの機能的に異なるmTORC1,2のシグナルをそれぞれ特異的に阻害するツールを開発した。
疾患モデル細胞を作成したことによって、疾患のメカニズム解明だけでなく、脳形成異常症に対する創薬のためのスクリーニングにも利用可能となった。

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (21 results)

All 2020 2019 2018 2017 2016

All Journal Article (10 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 10 results,  Open Access: 8 results,  Acknowledgement Compliant: 1 results) Presentation (11 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Journal Article] mTORC1 is involved in DGKb-induced neurite outgrowth and spinogenesis2020

    • Author(s)
      Nakai H, Tsumagari R, Nakashima A, Kikkawa U, Ueda S, Yamanoue M, Saito N, Takei N, Shirai Y
    • Journal Title

      Neurochem. Int.

      Volume: 134 Pages: 104645-104645

    • DOI

      10.1016/j.neuint.2019.104645

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] AMPK activation, eEF2 inactivation, and reduced protein synthesis in the cerebral cortex of hibernating chipmunks2019

    • Author(s)
      Yamada S, Kamata T, Nawa H, Sekijima T and Takei N
    • Journal Title

      Sci. Rep.

      Volume: 9 Issue: 1

    • DOI

      10.1038/s41598-019-48172-7

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Clozapine-dependent inhibition of EGF/neuregulin receptor (ErbB) kinases2019

    • Author(s)
      Kobayashi Yutaro、Iwakura Yuriko、Sotoyama Hidekazu、Kitayama Eiko、Takei Nobuyuki、Someya Toshiyuki、Nawa Hiroyuki
    • Journal Title

      Translational Psychiatry

      Volume: 9 Issue: 1 Pages: 181-181

    • DOI

      10.1038/s41398-019-0519-1

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Characterization of Functional Primary Cilia in Human Induced Pluripotent Stem Cell-Derived Neurons2019

    • Author(s)
      Miki Daisuke、Kobayashi Yuki、Okada Tomoya、Miyamoto Tatuso、Takei Nobuyuki、Sekino Yuko、Koganezawa Noriko、Shirao Tomoaki、Saito Yumiko
    • Journal Title

      Neurochemical Research

      Volume: 印刷中 Issue: 7 Pages: 1736-1744

    • DOI

      10.1007/s11064-019-02806-4

    • Related Report
      2019 Annual Research Report 2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Pathological alterations of chondroitin sulfate moiety in postmortem hippocampus of patients with schizophrenia2018

    • Author(s)
      Yukawa、Iwakura、Takei、Saito、Watanabe、Toyooka、Igarashi、Niizato、Oshima、Kunii、Yabe、Matsumoto、Wada、Hino、Iritanii、Niwa、Takeuchi、Takahashi、Kakita、Someya、Nawa
    • Journal Title

      Psychiatry Research

      Volume: 270 Pages: 940-946

    • DOI

      10.1016/j.psychres.2018.10.062

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] BDNF reduces eEF2 phosphorylation and enhances novel protein synthesis in growth cones of dorsal root ganglia neurons.2018

    • Author(s)
      Hoshi O, Sugizaki A, Cho Y and Takei N
    • Journal Title

      Neurochem. Res.

      Volume: 印刷中 Issue: 6 Pages: 1242-1249

    • DOI

      10.1007/s11064-018-2541-8

    • Related Report
      2018 Research-status Report 2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Striatal hypodopamine phenotypes found in transgenic mice that overexpress glial cell line-derived neurotrophic factor2017

    • Author(s)
      Sotoyama H, Iwakura Y, Oda K, Sasaoka T, Takei N, Kakita A, Enomoto H, Nawa H
    • Journal Title

      Neuroscience Letters

      Volume: 654 Pages: 99-106

    • DOI

      10.1016/j.neulet.2017.06.005

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Epidermal growth factor signals attenuate phenotypic and functional development of neocortical GABAergic neurons.2017

    • Author(s)
      3)Namba H, Nagano T, Jodo E, Eifuku S, Horie M, Takebayashi H, Iwakura Y, Sotoyama H, Takei N, Nawa H
    • Journal Title

      J. Neurochem.

      Volume: 142 Issue: 6 Pages: 886-900

    • DOI

      10.1111/jnc.14097

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Glutamate-Dependent Ectodomain Shedding of Neuregulin-1 Type II Precursors in Rat Forebrain Neurons.2017

    • Author(s)
      1)Iwakura Y, Wang R, Inamura N, Araki K, Higashiyama S, Takei N, Nawa N
    • Journal Title

      PLoS One

      Volume: 12 Issue: 3 Pages: e0174780-e0174780

    • DOI

      10.1371/journal.pone.0174780

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Advanced glycation end products induce brain-derived neurotrophic factor release from human platelets through the Src-family kinase activation2017

    • Author(s)
      Furukawa, K. Fuse, I. Iwakura, Y. Sotoyama, H. Hanyu, O. Nawa, H. Sone, H. Takei, N.
    • Journal Title

      Cardiovascular diabetology

      Volume: 16 Issue: 1 Pages: 20-20

    • DOI

      10.1186/s12933-017-0505-y

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] 神経細胞一次繊毛局在型GPCRを介するシグナルは繊毛の長さを調節する2019

    • Author(s)
      三木大輔, 小林勇喜, 河渕省吾, 宮本達雄, 小金澤紀子, 武井延之, 関野祐子, 白尾智明, 斎藤祐見子
    • Organizer
      第92回日本生化学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 細胞膜剥離法によるラット脊髄後根神経節細胞の成長円錐の形態解析2019

    • Author(s)
      星 治 武井延之
    • Organizer
      Neuro2019
    • Related Report
      2019 Annual Research Report
  • [Presentation] EGFによる神経の軸索伸長とEphシグナルへの干渉2019

    • Author(s)
      小林 雄太朗、横幕 大作,岩倉 百合子,北山 栄子,那波 宏之,武井 延之
    • Organizer
      Neuro2019
    • Related Report
      2019 Annual Research Report
  • [Presentation] シロリムス口内炎の発生機序に関する研究2019

    • Author(s)
      中田光、山本陽香、伊藤祐子、北村信隆、武井延之
    • Organizer
      第18回日本再生医療学会
    • Related Report
      2018 Research-status Report
  • [Presentation] 神経栄養因子による神経細胞成熟制御2018

    • Author(s)
      武井 延之、金村 米博、那波 宏之
    • Organizer
      第40回日本生物学的精神医学会/第61回日本神経化学会合同大会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] ヒトiPSC細胞由来神経細胞における非シナプスマーカー一次繊毛の検出2018

    • Author(s)
      三木 大輔、小林 勇喜、宮本 達雄、小金澤紀子、武井 延之、関野 祐子、白尾 智明、斎藤祐見子
    • Organizer
      第40回日本生物学的精神医学会/第61回日本神経化学会合同大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 低温オンチップインキュベーションシステムの開発2018

    • Author(s)
      関口知央, 武井延之, 二井信行
    • Organizer
      生体医工学会シンポジウム2018
    • Related Report
      2018 Research-status Report
  • [Presentation] Anticancer activity of antipsychotics on brain tumors2017

    • Author(s)
      Yutaro Kobayashi, Kohtaro Irie, Ayana Kawase, Nobuyuki Takei, Hiroyuki Nawa
    • Organizer
      7th International Society of Radiation Neurobiology Meeting
    • Place of Presentation
      ホテル双葉(新潟県南魚沼郡湯沢町)
    • Year and Date
      2017-02-09
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] レスベラトロールによるAMPK-mTORシグナルを介した抑制による脳腫瘍細胞増殖制御2017

    • Author(s)
      川瀬彩奈、那波宏之、武井延之
    • Organizer
      第60回日本神経化学会大会
    • Related Report
      2017 Research-status Report
  • [Presentation] 冬眠期のシマリス神経細胞におけるAMPKを上流とした翻訳制御2016

    • Author(s)
      山田新太郎、関島恒夫、那波宏之、武井延之
    • Organizer
      第59回日本神経化学会
    • Place of Presentation
      福岡国際会議場(福岡県福岡市)
    • Year and Date
      2016-09-08
    • Related Report
      2016 Research-status Report
  • [Presentation] Epidermal growth factor downregulates presynaptic maturation and suppresses synapse formation in vitro and in vivo.2016

    • Author(s)
      Takei N, Yokomaku D, Ushiki D and Nawa H
    • Organizer
      7th ISN Special Conference, Synaptic function and dysfunction in brain diseases
    • Place of Presentation
      Coimbra, Portugal
    • Year and Date
      2016-06-01
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2021-02-19  

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