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Mechanics of brain development: elasticity, residual tissue stress, and mechanosensing

Research Project

Project/Area Number 21H02656
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 48010:Anatomy-related
Research InstitutionNagoya University

Principal Investigator

Miyata Takaki  名古屋大学, 医学系研究科, 教授 (70311751)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2023: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2022: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2021: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
Keywords脳発生 / 力学的要因 / 弾性 / 圧縮 / 張力 / 応力解放試験 / アクトミオシン / 神経前駆細胞 / 力学的解析 / 残留応力 / 力学 / メカノセンシング / 大脳皮質 / 脳室 / 圧縮力 / 脳脊髄液 / 器官形成 / 形態形成 / 大脳原基
Outline of Research at the Start

哺乳類の脳形成の力学的理解を増してきた先行研究の発展として,本研究は,「胎生早・中期(頭蓋骨形成前の)脳胞壁」に注目し,壁内で どんな局所形態に どんな向きの「押し」と「引っ張り」の力が生じ,それらがどう組み合わさることで,壁が頑強さ・適正曲率を持ちつつ劇的な成長・形態変化を果たし得るのか を理解するために,①脳壁内細胞の形態および分布・集簇性がもたらす局所および壁全体の力学的特性,② 弾性線維関連分子群(エラスチン,マイクロフィブリルなど)の役割,③ 機械刺激センサー Piezo1 の役割,について「残留応力解放試験」を基軸とする複合的解析で明らかにする.

Outline of Final Research Achievements

When circumferential continuity of the midembryonic cerbral wall was reduced to a degree to leave only a cube-like structure, such cubes observed in culture medium spontaneously changed their overall shapes in 30~60 min, showing the bulging of the neuronal zones to the lateral direction, which was coupled with the thinning of the entire wall. These results indicate that pressure-relieving recoil of the intramural neurons lateral to and beyond the slice edges upon surgery always resulted in thinning of the neuronal layers and shortening of neural progenitor cells along the apicobasal axis. It is therefore suggested that in vivo neurons, packed in a manner compressed centripetally parallel to the wall surfaces (along the circumferential plane including the anterior-posterior and dorsoventral axes), use their counteractingly expansive property to orthogonally (thus apicobasally) stratify themselves to thicken the wall. The wall is therefore under self-tightening for mechanical stability.

Academic Significance and Societal Importance of the Research Achievements

建築物・工業製品であれ地球上構造であれ,何かが生じる・作られる場合に「ちから」は 必ず意識され,力学的に「どうある」かの理解が「カタチ」の成立を説明する.しかし「哺乳類の脳づくり」は,どんな形態成立原理の探求にも本来欠かせないはずの力学的な視点と,それに沿った解析法をほとんど持たないままであった.本研究がもたらした,胎生期の脳原基における力学的な理解,すなわち,どんな細胞がどの向きのどんな力を受け取るか,は,将来的に「mechanopathy メカノパシー」と括られることになる可能性のある分子病態の理解のための細胞・組織力学の基盤となり得ると予想され,重要である.

Report

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

    (18 results)

All 2024 2023 2022 2021

All Journal Article (10 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 10 results,  Open Access: 9 results) Presentation (8 results)

  • [Journal Article] Mechanical and Physical Interactions Involving Neocortical Progenitor Cells2023

    • Author(s)
      Miyata Takaki
    • Journal Title

      Neocortical Neurogenesis in Development and Evolution

      Volume: 1 Pages: 119-136

    • DOI

      10.1002/9781119860914.ch7

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] CD206+ macrophages transventricularly infiltrate the early embryonic cerebral wall to differentiate into microglia.2023

    • Author(s)
      Hattori Y, Kato D, Murayama F, Koike S, Asai H, Yamasaki A, Naito Y, Kawaguchi A, Hiroyuki Konishi H, Prinz M, Masuda T, Wake H, Miyata T.
    • Journal Title

      Cell Rep

      Volume: 42 Issue: 2 Pages: 112092-112092

    • DOI

      10.1016/j.celrep.2023.112092

    • Related Report
      2023 Annual Research Report 2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Actin crosslinking by α-actinin averts viscous dissipation of myosin force transmission in stress fibers2023

    • Author(s)
      Katsuta Hiroki、Okuda Satoru、Nagayama Kazuaki、Machiyama Hiroaki、Kidoaki Satoru、Kato Masashi、Sokabe Masahiro、Miyata Takaki、Hirata Hiroaki
    • Journal Title

      iScience

      Volume: 26 Issue: 3 Pages: 106090-106090

    • DOI

      10.1016/j.isci.2023.106090

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Stiffness of primordial germ cells is required for their extravasation in avian embryos2022

    • Author(s)
      Saito Daisuke、Tadokoro Ryosuke、Nagasaka Arata、Yoshino Daisuke、Teramoto Takayuki、Mizumoto Kanta、Funamoto Kenichi、Kidokoro Hinako、Miyata Takaki、Tamura Koji、Takahashi Yoshiko
    • Journal Title

      iScience

      Volume: 25 Issue: 12 Pages: 105629-105629

    • DOI

      10.1016/j.isci.2022.105629

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Functional cooperation of α-synuclein and tau is essential for proper corticogenesis.2022

    • Author(s)
      2.Wang S., Fu Y., Miyata T., Matsumoto S., Shinoda T., Itoh K., Harada A., Hirotsune S. and Jin M.
    • Journal Title

      The Journal Neuroscience

      Volume: 42(37) Issue: 37 Pages: 7031-7046

    • DOI

      10.1523/jneurosci.0396-22.2022

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Mid1 is associated with androgen-dependent axonal vulnerability of motor neurons in spinal and bulbar muscular atrophy2022

    • Author(s)
      Ogura Yosuke、Sahashi Kentaro、Hirunagi Tomoki、Iida Madoka、Miyata Takaki、Katsuno Masahisa
    • Journal Title

      Cell Death & Disease

      Volume: 13 Issue: 7 Pages: 601-601

    • DOI

      10.1038/s41419-022-05001-6

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Developmentally interdependent stretcher-compressor relationship between the embryonic brain and the surrounding scalp in the preosteogenic head2022

    • Author(s)
      Tsujikawa K, Saito K, Nagasaka A, Miyata T
    • Journal Title

      Developmental Dynamics

      Volume: 2022 Issue: 7 Pages: 451-451

    • DOI

      10.1002/dvdy.451

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Embryonic Pericytes Promote Microglial Homeostasis and Their Effects on Neural Progenitors in the Developing Cerebral Cortex2022

    • Author(s)
      Hattori Y, Itoh H, Tsugawa Y, Nishida Y, Kurata K, Uemura A, Miyata T
    • Journal Title

      The Journal of Neuroscience

      Volume: 42 Issue: 3 Pages: 362-376

    • DOI

      10.1523/jneurosci.1201-21.2021

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Mechanical collaboration between the embryonic brain and the surrounding scalp tissues2021

    • Author(s)
      Tsujikawa K, Saito K, Nagasaka A, Miyata T
    • Journal Title

      bioRxiv

      Volume: 5 Pages: 442865-442865

    • DOI

      10.1101/2021.05.05.442865

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Comparison of the Mechanical Properties Between the Convex and Concave Inner/Apical Surfaces of the Developing Cerebrum.2021

    • Author(s)
      Nagasaka A and Miyata T
    • Journal Title

      Front. Cell Dev. Biol.

      Volume: 9 Pages: 702068-702068

    • DOI

      10.3389/fcell.2021.702068

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 胎生早中期の脳室圧は頭皮からの拘束のみならず羊水圧からの影響も被る2024

    • Author(s)
      辻川 幸一郎, 島村 司, 篠田 友靖, 宮田 卓樹
    • Organizer
      第129回日本解剖学会総会・全国学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Intraventricular macrophages infiltrate the cerebral wall in association with neural progenitor cells2023

    • Author(s)
      Asai Hisa, Hattori Yuki, Miyata Takaki
    • Organizer
      第46回 日本神経科学大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Interventricular pressure of the developing mammalian brain before skull vault ossification: mechanisms and physical roles of pressure generation2023

    • Author(s)
      Koichiro Tsujikawa, Takaki Miyata
    • Organizer
      第56回日本発生生物学会大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Searching for the mechanism of emergence of community-level efficiencies in the interkinetic nuclear migration in highly proliferative embryonic mouse neuroepithelium2023

    • Author(s)
      Tsukasa Shimamura, Miyata Takaki
    • Organizer
      第56回日本発生生物学会大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 頭蓋骨未形成期の脳室内圧とは?-----成立のしくみと力学的意義2023

    • Author(s)
      辻川幸一郎,宮田卓樹
    • Organizer
      第128回日本解剖学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 動物の大脳というドーム構造の建築工法2022

    • Author(s)
      宮田卓樹
    • Organizer
      2022年度日本建築学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 胎生期の脳の成長と周囲頭皮組織のなす力学的相互作用と協働的形態形成2022

    • Author(s)
      辻川 幸一郎, 齋藤 加奈子, 長坂 新, 宮田 卓樹
    • Organizer
      第127回 日本解剖学会全国学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 胎生期の脳と周囲頭皮組織の力学的相互作用について2021

    • Author(s)
      辻川 幸一郎, 齋藤 加奈子, 長坂 新, 宮田 卓樹
    • Organizer
      日本解剖学会中部支部学術集会
    • Related Report
      2021 Annual Research Report

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

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