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Analysis for the ubiquitination of the planar cell polarity factors during neural tube closure.

Research Project

Project/Area Number 20K07253
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 48010:Anatomy-related
Research InstitutionFujita Health University

Principal Investigator

Nagaoka Tadahiro  藤田医科大学, 医科学研究センター, 助教 (70634864)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords平面内細胞極性 / ユビキチン / 神経管閉鎖 / 二分脊椎 / ユビキチン化
Outline of Research at the Start

平面内細胞極性は、その極性を担う蛋白質群が細胞内で磁石のN極、S極のように別れて局在することで、細胞を一定の方向に整列させて、皮膚のような細胞シートや神経管を形成させる。この時、極性因子が別の因子の分解を促し、細胞内の各極の蛋白質の種類や量をバランスさせている。我々は、その極性を担う分子Vangl2が哺乳動物細胞に於いて、別の平面内細胞極性因子Prickleのユビキチン化させて分解を促進すること示したが、その道筋には、まだ不明な点がある。そこで、我々はVangl2-Prickle蛋白質複合体に含まれるユビキチン化に関わる分子を同定する。それによって、平面内細胞極性形成の一端を明らかにしたい。

Outline of Final Research Achievements

The planar cell polarity (PCP) is the apical and vertical cell polarity. One of the mechanisms of polarity formation is degradation by ubiquitination of PCP factors, but the details remain unclear. We revealed that Vangl2 promotes the ubiquitination and degradation of Prickle2. However, the molecules responsible for the ubiquitination of Prickle2 have not been identified. Therefore, we aim to comprehensively analyze and identify this molecule by mass spectrometry. We have so far found novel molecules RBX1 and MAGEF1 that bind to this complex. The latter was found to suppress the degradation of the Prickle protein upon gene knockdown in cells. Although not a molecule involved in ubiquitination, it was revealed that N-cadherin, an adhesion molecule found to interact with Vangl2, is involved in neural tube closure through genetic interaction with Vangl2. Further analysis of this interaction was performed.

Academic Significance and Societal Importance of the Research Achievements

Prickleをユビキチン化させる新規因子を解析することは、私たちの体の形を制御するのに重要な役割を果たしている平面内細胞極性形成のメカニズムの一端を明らかにすることができる。また、Nカドヘリン変異マウスやVangl2変異マウスを用いることで神経管閉鎖に於けるPrickleのユビキチン化を解析しその重要性を議論できる。また、それによって平面内細胞極性の形成過程の一端や、二分脊椎の病態の解明につながる結果が得られる可能性もあり、基礎医学から将来の臨床医学まで貢献できると考えられる。

Report

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

    (4 results)

All 2023 2022 2021 2020

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

  • [Journal Article] Functional interaction between Vangl2 and N-cadherin regulates planar cell polarization of the developing neural tube and cochlear sensory epithelium2023

    • Author(s)
      Nagaoka Tadahiro、Katsuno Tatsuya、Fujimura Kyoka、Tsuchida Kunihiro、Kishi Masashi
    • Journal Title

      Scientific Reports

      Volume: 13 Issue: 1 Pages: 3905-3905

    • DOI

      10.1038/s41598-023-30213-x

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Frequent Germline and Somatic Single Nucleotide Variants in the Promoter Region of the Ribosomal RNA Gene in Japanese Lung Adenocarcinoma Patients2020

    • Author(s)
      Ohashi R, Umezu H, Sato A, Abテゥ T, Kondo S, Daigo K, Sato S, Hara N, Miyashita A, Ikeuchi T, Motoyama T, Kishi M, Nagaoka T, Horiuchi K, Shiga A, Okuda S, Sekiya T, Ohtsubo A, Ichikawa K, Kagamu H, Kikuchi T, Watanabe S, Tanuma JI, Schraml P, Hamakubo T, Tsuchida M, Ajioka Y.
    • Journal Title

      Cells

      Volume: 9 Issue: 11 Pages: 2409-2409

    • DOI

      10.3390/cells9112409

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 平面内細胞極性因子Prickle2の分解に関与する新規因子の解析2022

    • Author(s)
      永岡唯宏、土田邦博
    • Organizer
      第45回日本分子生物学会年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 官形成におけるVangl2とCdh2の遺伝的相互作用2021

    • Author(s)
      永岡唯宏、勝野達也、岸将史、土田邦博
    • Organizer
      日本分子生物学会
    • Related Report
      2021 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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