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Neurodevelopmental disorder related Rac signaling pathways control the neonatal development of the dentate gyrus

Research Project

Project/Area Number 19K07059
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 47030:Pharmaceutical hygiene and biochemistry-related
Research InstitutionInstitute for Developmental Research Aichi Developmental Disability Center

Principal Investigator

Ito Hidenori  愛知県医療療育総合センター発達障害研究所, 分子病態研究部, 室長 (40311443)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords海馬 / 低分子量Gタンパク質 / 神経細胞 / 発達障害 / アダプター分子 / 歯状回 / 神経発達障害 / 神経発生 / てんかん / Rac / 知的障害
Outline of Research at the Start

遺伝学的な解析から、知的障害や自閉症などの神経発達障害とRac情報伝達系の関連が指摘されている。そこで、Rac情報伝達系分子の一つであり、X連鎖知的障害との関連が指摘されているCNK2(connector and enhancer of KSR2)の海馬歯状回の発達における機能を解明する。本研究を遂行することにより、神経発達障害の病態解明や治療法の開発につながる研究成果を得ることを目指す。

Outline of Final Research Achievements

CNKSR2 is a neuronal scaffolding molecule that is encoded by the CNKSR2 gene located on the X chromosome. Variations in the CNKSR2 gene are associated with intellectual disability and epileptic seizures, yet the cellular and molecular roles of CNKSR2 in neuronal development and disease remain poorly characterized. Here, we identify a molecular complex comprising CNKSR2 and the guanine nucleotide exchange factor (GEF) for ARF small GTPases, CYTH2. Our results demonstrate that CNKSR2 and CYTH2 are necessary for the proper development of neonatal mouse dentate granule cells through a mechanism that involves the stabilization of a complex comprising these proteins.

Academic Significance and Societal Importance of the Research Achievements

知的障害とてんかんを併発するX連鎖知的障害の患者でCNKSR2遺伝子の変異が多数報告されているが、神経系組織における機能や病態との関連についてはよく分かっていなかった。そのような状況下で、私たちは、新生仔期から生後発達期のマウス海馬歯状回神経細胞の発達におけるCNKSR2の機能を明らかにした。この結果は、CNKSR2の新たな分子機能を明らかにするとともに、X連鎖知的障害の病態の一端を明らかにするものであり、疾患治療法開発への端緒となる研究成果であると考えられる。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (37 results)

All 2023 2022 2021 2020 2019 Other

All Int'l Joint Research (1 results) Journal Article (17 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 17 results,  Open Access: 13 results) Presentation (18 results) (of which Invited: 1 results) Remarks (1 results)

  • [Int'l Joint Research] University of Genoa(イタリア)

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Expression Analyses of Rich2/Arhgap44, a Rho Family GTPase-Activating Protein, during Mouse Brain Development.2023

    • Author(s)
      Goto N, Nishikawa M, Ito H, Noda M, Hamada N, Tabata H, Kinoshita M, Nagata K-I
    • Journal Title

      Dev. Neurosci.

      Volume: 45 Issue: 1 Pages: 19-26

    • DOI

      10.1159/000529051

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Variant-specific changes in RAC3 function disrupt corticogenesis in neurodevelopmental phenotypes2022

    • Author(s)
      Scala Marcello et al.
    • Journal Title

      Brain

      Volume: 145 Issue: 9 Pages: 3308-3327

    • DOI

      10.1093/brain/awac106

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Expression Analyses of Cep152, a Responsible Gene Product for Autosomal Recessive Primary Microcephaly, during Mouse Brain Development2022

    • Author(s)
      Hamada Nanako、Noda Mariko、Ito Hidenori、Iwamoto Ikuko、Nagata Koh-ichi
    • Journal Title

      Developmental Neuroscience

      Volume: 44 Issue: 3 Pages: 162-170

    • DOI

      10.1159/000523922

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Erratic and blood vessel-guided migration of astrocyte progenitors in the cerebral cortex2022

    • Author(s)
      Tabata Hidenori、Sasaki Megumi、Agetsuma Masakazu、Sano Hitomi、Hirota Yuki、Miyajima Michio、Hayashi Kanehiro、Honda Takao、Nishikawa Masashi、Inaguma Yutaka、Ito Hidenori、Takebayashi Hirohide、Ema Masatsugu、Ikenaka Kazuhiro、Nabekura Junichi、Nagata Koh-ichi、Nakajima Kazunori
    • Journal Title

      Nature Communications

      Volume: 13 Issue: 1 Pages: 6571-6571

    • DOI

      10.1038/s41467-022-34184-x

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Gain-of-function p.F28S variant in<i>RAC3</i>disrupts neuronal differentiation, migration and axonogenesis during cortical development, leading to neurodevelopmental disorder2022

    • Author(s)
      Nishikawa Masashi、Scala Marcello、Umair Muhammad、Ito Hidenori、Waqas Ahmed、Striano Pasquale、Zara Federico、Costain Gregory、Capra Valeria、Nagata Koh-ichi
    • Journal Title

      Journal of Medical Genetics

      Volume: 60 Issue: 3 Pages: 223-232

    • DOI

      10.1136/jmedgenet-2022-108483

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Impaired Function of PLEKHG2, a Rho-Guanine Nucleotide-Exchange Factor, Disrupts Corticogenesis in Neurodevelopmental Phenotypes.2022

    • Author(s)
      Nishikawa M, Ito H, Tabata H, Ueda H, Nagata KI.
    • Journal Title

      Cells

      Volume: 16 Issue: 4 Pages: 696-696

    • DOI

      10.3390/cells11040696

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Functions of CNKSR2 and its association with neurodevelopmental disorders.2022

    • Author(s)
      Ito H, Nagata K.
    • Journal Title

      Cells

      Volume: 11 Issue: 2 Pages: 303-303

    • DOI

      10.3390/cells11020303

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Expression analyses of Rac3, a Rho family small GTPase, during mouse brain development.2022

    • Author(s)
      Nishikawa M, Ito H, Noda M, Hamada N, Tabata H, Nagata K.
    • Journal Title

      Dev Neurosci

      Volume: 44 Issue: 1 Pages: 49-58

    • DOI

      10.1159/000521168

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The synaptic scaffolding protein CNKSR2 interacts with CYTH2 to mediate hippocampal granule cell development2021

    • Author(s)
      Ito Hidenori、Morishita Rika、Noda Mariko、Ishiguro Tomoki、Nishikawa Masashi、Nagata Koh-ichi
    • Journal Title

      Journal of Biological Chemistry

      Volume: 297 Issue: 6 Pages: 101427-101427

    • DOI

      10.1016/j.jbc.2021.101427

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Physiological significance of WDR45, a responsible gene for β-propeller protein associated neurodegeneration (BPAN), in brain development2021

    • Author(s)
      Noda Mariko、Ito Hidenori、Nagata Koh-ichi
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 22568-22568

    • DOI

      10.1038/s41598-021-02123-3

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Expression analyses of PLEKHG2, a Rho family-specific guanine nucleotide exchange factor, during mouse brain development2021

    • Author(s)
      Nishikawa Masashi、Ito Hidenori、Noda Mariko、Hamada Nanako、Tabata Hidenori、Nagata Koh-ichi
    • Journal Title

      Medical Molecular Morphology

      Volume: - Issue: 2 Pages: 146-155

    • DOI

      10.1007/s00795-020-00275-1

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Neuropathophysiological significance of the c.1449T>C/p.(Tyr64Cys) mutation in the CDC42 gene responsible for Takenouchi-Kosaki syndrome2020

    • Author(s)
      Hamada Nanako、Ito Hidenori、Shibukawa Yukinao、Morishita Rika、Iwamoto Ikuko、Okamoto Nobuhiko、Nagata Koh-ichi
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 529 Issue: 4 Pages: 1033-1037

    • DOI

      10.1016/j.bbrc.2020.06.104

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Biochemical and morphological characterization of SEPT1 in mouse brain2020

    • Author(s)
      Ito Hidenori、Morishita Rika、Noda Mariko、Iwamoto Ikuko、Nagata Koh-ichi
    • Journal Title

      Medical Molecular Morphology

      Volume: 53 Issue: 4 Pages: 221-228

    • DOI

      10.1007/s00795-020-00248-4

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Role of Per3, a circadian clock gene, in embryonic development of mouse cerebral cortex.?2019

    • Author(s)
      Noda M, Iwamoto I, Tabata H, Yamagata T, Ito H, Nagata K.
    • Journal Title

      Sci. Rep.

      Volume: 9 Issue: 1 Pages: 5874-5874

    • DOI

      10.1038/s41598-019-42390-9

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] MYCN de novo gain-of-function mutation in a patient with a novel megalencephaly syndrome2019

    • Author(s)
      Kato Kohji、Miya Fuyuki、Hamada Nanako、Negishi Yutaka、Narumi-Kishimoto Yoko、Ozawa Hiroshi、Ito Hidenori、Hori Ikumi、Hattori Ayako、Okamoto Nobuhiko、Kato Mitsuhiro、Tsunoda Tatsuhiko、Kanemura Yonehiro、Kosaki Kenjiro、Takahashi Yoshiyuki、Nagata Koh-ichi、Saitoh Shinji
    • Journal Title

      Journal of Medical Genetics

      Volume: 印刷中 Issue: 6 Pages: 388-395

    • DOI

      10.1136/jmedgenet-2018-105487

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Rho family GTPases, Rac and Cdc42, control the localization of neonatal dentate granule cells during brain development2019

    • Author(s)
      Ito Hidenori、Morishita Rika、Mizuno Makoto、Tabata Hidenori、Nagata Koh-ichi
    • Journal Title

      Hippocampus

      Volume: 印刷中 Issue: 7 Pages: 569-578

    • DOI

      10.1002/hipo.23047

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Expression analyses of POGZ, a responsible gene for neurodevelopmental disorders, during mouse brain development.2019

    • Author(s)
      Ibaraki K, Hamada N, Iwamoto I, Ito H, Kawamura N, Morishita R, Tabata H, Nagata KI.
    • Journal Title

      Dev Neurosci.

      Volume: 41 Issue: 1-2 Pages: 139-148

    • DOI

      10.1159/000502128

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 低分子量G蛋白質RAC3の遺伝子異常による発達障害の病態形成メカニズム2022

    • Author(s)
      永田浩一,西川将司,田畑秀典,伊東秀記
    • Organizer
      日本小児神経学会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Role of GAP43 in the development of mouse cerebral cortex.2022

    • Author(s)
      野田 万理子,松本歩,伊東秀記,山形崇倫,永田浩一
    • Organizer
      NEURO2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] Variant-specific changes in RAC3 function disrupt corticogenesis in neurodevelopmental phenotypes.2022

    • Author(s)
      永田浩一,西川将司,伊東秀記
    • Organizer
      NEURO2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] Impaired function of PLEKHG2, a Rho-guanine nucleotide-exchange factor, disrupts corticogenesis in neurodevelopmental phenotypes.2022

    • Author(s)
      西川将司,田畑秀典,伊東秀記,永田浩一
    • Organizer
      NEURO2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] The m6A reader YTHDF1 modulates APC and controls axon and dendrite development.2022

    • Author(s)
      Loic Broix, Rohini Roy, Shengqun Hou, Momoe Sukegawa, Hidenori Ito, Koh-ichi Nagata, Dan Ohtan Wang
    • Organizer
      NEURO2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] PLEKHG2遺伝子変異による小頭症・知的障害の発症メカニズムの解析.2022

    • Author(s)
      西川将司,伊東秀記, 田畑 秀典, 永田浩一
    • Organizer
      神経組織培養研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] X連鎖知的障害関連分子CNKSR2はCYTH2と協調して海馬歯状回顆粒細胞の発達を制御する.2022

    • Author(s)
      伊東秀記,森下理香,野田万理子,石黒智己,西川将司,永田浩一
    • Organizer
      日本生化学会大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 知的障害を伴う小頭症の責任遺伝子PLEKHG2の病態機能解析.2022

    • Author(s)
      永田浩一,西川将司,田畑秀典,伊東秀記
    • Organizer
      日本小児遺伝学会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 電気穿孔法を用いた神経発達障害の病態解析.2022

    • Author(s)
      浜田奈々子,伊東秀記,永田浩一
    • Organizer
      日本臨床分子形態学会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] マウス脳神経組織におけるCYTH2の性状解析2021

    • Author(s)
      伊東秀記,西川将司,森下理香,石黒智己,野田万理子,永田浩一
    • Organizer
      日本臨床分子形態学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] マウス大脳皮質発生・発達過程におけるアストロサイト前駆細胞の移動様式とその分子機構2021

    • Author(s)
      田畑秀典,佐々木恵,揚妻正和,林周宏,佐野ひとみ,廣田ゆき,本田岳夫,稲熊裕.伊東秀記,竹林浩秀,依馬正次,池中一裕,鍋倉淳一,永田浩一,仲嶋一範
    • Organizer
      日本臨床分子形態学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] 発達障害責任遺伝子Rac3の神経組織における発現解析2021

    • Author(s)
      西川将司,伊東秀記,野田万理子,浜田奈々子,田畑秀典,永田浩一
    • Organizer
      日本臨床分子形態学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] 発達期脳におけるがん抑制遺伝子FHITの機能解明2021

    • Author(s)
      野田万理子,伊東秀記,永田浩一
    • Organizer
      日本臨床分子形態学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] 大脳皮質発達過程におけるオートファジー関連分子Wdr45の役割2021

    • Author(s)
      野田万理子,伊東秀記,永田浩一
    • Organizer
      日本神経化学会
    • Related Report
      2021 Research-status Report
  • [Presentation] X連鎖知的障害関連分子CNK2の性状機能解析2020

    • Author(s)
      伊東秀記、森下理香、野田万理子、永田浩一
    • Organizer
      日本臨床分子形態学会学術集会
    • Related Report
      2020 Research-status Report
  • [Presentation] 大脳皮質発達過程におけるオートファジー関連分子WDR45の役割2020

    • Author(s)
      野田 万理子、岩本 郁子、田畑 秀典、伊東 秀記、永田 浩一
    • Organizer
      日本神経化学会大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 海馬歯状回顆粒細胞の発達におけるRacとCdc42の機能.2019

    • Author(s)
      伊東秀記,森下理香,水野 誠,田畑秀典,永田浩一
    • Organizer
      NEURO2019
    • Related Report
      2019 Research-status Report
  • [Presentation] 海馬歯状回の発達におけるRacとCdc42の機能.2019

    • Author(s)
      伊東秀記,森下理香,田畑秀典,永田浩一
    • Organizer
      日本生化学会大会
    • Related Report
      2019 Research-status Report
  • [Remarks] 愛知県医療療育総合センター発達障害研究所

    • URL

      https://www.pref.aichi.jp/addc/eachfacility/hattatsu/index.html

    • Related Report
      2022 Annual Research Report 2021 Research-status Report 2020 Research-status Report 2019 Research-status Report

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Published: 2019-04-18   Modified: 2024-01-30  

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