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Structural study of the association between the nuclear lamina and nuclear pore complexes

Research Project

Project/Area Number 19K21178
Project/Area Number (Other) 18H06045 (2018)
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund (2019)
Single-year Grants (2018)
Review Section 0701:Biology at molecular to cellular levels, and related fields
Research InstitutionTokyo Institute of Technology

Principal Investigator

Shimi Takeshi  東京工業大学, 科学技術創成研究院, 特任准教授 (60817568)

Project Period (FY) 2018-08-24 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
KeywordsLamina / lamin / Nuclear pore complex / Nucleoporin / Laminopathies / 核ラミナ / ラミン / 核膜孔複合体 / ヌクレオポリン / 核膜孔
Outline of Research at the Start

動物細胞の核膜では、ラミナと核膜孔が構造的に繋がっている。ラミナの主要な構造タンパク質であるラミンは、Lamin A/C、Lamin B1 ならびにLamin B2 によって構成され、核膜孔を構成するヌクレオポリンと結合する。本研究では、『Lamin A/C とLamin B1 は、特定のヌクレオポリンとの結合を介して核膜孔の分布を制御する』という作業仮説に基づき、ラミナと核膜孔を構造的に繋げるヌクレオポリンを特定し、これらのヌクレオポリンが結合するLamin A/C とLamin B1 の領域を同定する。

Outline of Final Research Achievements

We analyzed the structural relationship between the lamina/lamin and the nuclear pore complex (NPC) in mouse embryonic fibroblasts (MEFs) using fluorescence three-dimensional structured illumination microscopy (3D-SIM) combined with computer-vision and cryo-electron tomography (cryo-ET). We showed that the NPC followed the perimeter of lamin fibers of the lamina, and the NPC was redistributed by Knockout of LA or LB1. Furthermore, Lamin filaments were structurally associated with the nucleoplasmic ring of the NPC. We also found that knockdown of a nucleoporin, ELYS altered the spatial relationship between the lamin fiber and the NPC. These results indicated that LA/C and LB1 are required for regulating the normal structure of the lamina and the NPC through ELYS. Our quantitative approach combining 3D-SIM and cryo-ET may shed light on the physiological properties of and pathological changes in lamin-NPC interactions.

Academic Significance and Societal Importance of the Research Achievements

ラミンと核膜孔複合体の結合は、それぞれの構造と機能に働きかける局所場であり、本研究でこの結合について定量解析をおこなったことは、細胞生理学的な意義が極めて大きいと考えられる。今回の成果は今後、心筋症、筋ジストロフィー、早老症に代表される、ラミンの変異を原因とする遺伝病(ラミノパシー)の分子レベルでの解明につながると期待される。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Annual Research Report
  • Research Products

    (20 results)

All 2020 2019 2018 Other

All Int'l Joint Research (12 results) Journal Article (4 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 1 results,  Open Access: 3 results) Presentation (4 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Int'l Joint Research] Dept. of Cell and Developmental Biology/Feinberg School of Medicine/Northwestern University(米国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Dept. of Biophysics/UT Southwestern Medical Center(米国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Dept. of Embryology/Carnegie Institution for Science(米国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Dept. of Biochemistry/University of Zurich, Zurich(スイス)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Dept. of Cell and Developmental Biology/Feinberg School of Medicine/Northwestern University(米国)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Dept. of Biophysics/UT Southwestern Medical Center(米国)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Dept. of Embryology/Carnegie Institution for Science(米国)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Dept. of Biochemistry/University of Zurich(スイス)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Dept. of Cell and Developmental Biology/Feinberg School of Medicine/Northwestern University(米国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Dept. of Biophysics/UT Southwestern Medical Center(米国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Dept. of Embryology/Carnegie Institution for Science(米国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Dept. of Biochemistry/University of Zurich(スイス)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Adaptive-Resolution Multi-Orientation Analysis of Complex Filamentous Network Images2020

    • Author(s)
      Mark Kittisopikul, Amir Vahabikashi, Takeshi Shimi, Robert D. Goldman, Khuloud Jaqaman
    • Journal Title

      Bioinformatics

      Volume: 36 Issue: 20 Pages: 5093-5103

    • DOI

      10.1093/bioinformatics/btaa627

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Nuclear Lamins A/C and B1 Provide a Structural Framework That Organizes and Anchors Nuclear Pore Complexes2020

    • Author(s)
      Kittisopikul Mark、Shimi Takeshi、Tatli Meltem、Tran Joseph R.、Zheng Yixian、Medalia Ohad、Jaqaman Khuloud、Adam Stephen A.、Goldman Robert D.
    • Journal Title

      bioRxiv

      Volume: -

    • DOI

      10.1101/2020.04.03.022798

    • Related Report
      2019 Research-status Report
    • Open Access / Int'l Joint Research
  • [Journal Article] A mosaic of old and young nucleoporins2019

    • Author(s)
      Shimi Takeshi、Kimura Hiroshi
    • Journal Title

      The Journal of Cell Biology

      Volume: 218 Issue: 2 Pages: 385-386

    • DOI

      10.1083/jcb.201811170

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Adaptive-Resolution Multi-Orientation Analysis of Complex Filamentous Network Images2019

    • Author(s)
      Kittisopikul Mark、Vahabikashi Amir、Shimi Takeshi、Goldman Robert D.、Jaqaman Khuloud
    • Journal Title

      bioRxiv

      Volume: -

    • DOI

      10.1101/757005

    • Related Report
      2019 Research-status Report
    • Open Access / Int'l Joint Research
  • [Presentation] クライオ電子顕微鏡トモグラフィーと超解像度顕微鏡による核ラミンー核膜孔間の相互作用の解明2019

    • Author(s)
      Takeshi Shimi, Mark Kittisopikul, Stephen A. Adam, Yixian Zheng, Khuloud Jaqaman, Robert D. Goldman
    • Organizer
      第42回分子生物学会・年会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Elys anchors the Nuclear Pore Complex to Nuclear Lamins2019

    • Author(s)
      M. Kittisopikul, T. Shimi, M. Tatli, S.A. Adam, Y. Zheng, O. Medalia, K. Jaqaman, R.D. Goldman
    • Organizer
      ASCB/EMBO 2019 Meeting
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Nuclear lamins provide a structural framework that anchors nuclear pore complexes2018

    • Author(s)
      Mark Kittisopikul, Takeshi Shimi, Stephen A Adam, Yixian Zheng, Khuloud Jaqaman, Robert D Goldman
    • Organizer
      Cold Spring Harbor Laboratory for the Nuclear Organization & Function meeting
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 核ラミナによる核膜孔複合体の分布を制御する分子機構2018

    • Author(s)
      Takeshi Shimi, Mark Kittisopikul, Stephen A. Adam, Yixian Zheng, Khuloud Jaqaman, Robert D. Goldman
    • Organizer
      第36回染色体ワークショップ・第17回核ダイナミクス研究会
    • Related Report
      2018 Annual Research Report

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Published: 2018-08-27   Modified: 2024-03-26  

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