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Elucidation of the common etiology of spina bifida and cleft palate caused by epithelial fusion defects.

Research Project

Project/Area Number 19K08291
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52050:Embryonic medicine and pediatrics-related
Research InstitutionOsama Woman's and Children's Hospital

Principal Investigator

Mochida Kyoko  地方独立行政法人大阪府立病院機構大阪母子医療センター(研究所), 病因病態部門, 流動研究員 (00834417)

Co-Investigator(Kenkyū-buntansha) 吉田 千春  地方独立行政法人大阪府立病院機構大阪母子医療センター(研究所), 病因病態部門, 主任研究員 (60360666)
Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords上皮癒合 / 口唇口蓋裂 / 疾患モデルマウス / 神経管閉鎖不全 / 表皮癒合 / 表皮分化 / マウス / 遺伝子欠損マウス / 二分脊椎 / 口蓋裂疾患 / 遺伝子改変マウス / 先天異常 / 哺乳動物
Outline of Research at the Start

本研究ではGRHL3タンパク質と関連する分子の発現量や発現領域を変化させた場合、上皮癒合に関わる先天異常の発症率並びに重篤度がどのような影響をうけるか実験モデルマウスを用いて検証する。具体的にはGrhl3遺伝子の様々なアレルを持った遺伝子改変マウスや、Grhl2遺伝子やPCP経路遺伝子欠損マウスとの交配によるダブル変異マウスの表現型解析を行う。さらに上皮癒合異常が見られるヒト疾患の発症原因遺伝子に対して、同じアミノ酸変異を持つ実験モデルマウスを作製し、表現型を解析する。これらの解析を通じて上皮癒合異常に起因する共通の病因機構を解明する。

Outline of Final Research Achievements

We investigated whether mouse models of spina bifida manifesta, which is caused by epidermal dysplasia (abnormal differentiation into epidermal cells, abnormal cell morphology, etc.), develop cleft lip and palate, which is also thought to be caused by epithelial fusion defects. The results showed that the Grhl3 deficient fetuses, a well-known model of manifest spina bifida, developed only secondary cleft palate, while the b-catenin conditional knockout mice, in which the beta-catenin gene was deleted only in the epidermis, developed cleft lip in some fetuses and primary cleft palate as well. These findings indicate that the epithelial fusion defects that cause neural tube closure are also involved in the formation of other organs, particularly, the palate.

Academic Significance and Societal Importance of the Research Achievements

神経管閉鎖不全と口唇口蓋裂はいずれも頻度の高いヒトの先天性疾患である。特に口唇口蓋裂は外科的な治療に加え、成長に伴う言語治療、歯科治療など長い期間に渡る治療が必要となるため早期発見、治療が急務である。
一方、ヒトの場合は一次口蓋を発症するケースが多いのに対し、マウスでは二次口蓋を発症する疾患モデルマウスが多く、一次口蓋裂はほとんど発症しない。つまり、口唇口蓋裂の基礎研究を臨床に繋げるためには、ヒトの発症に近いモデルマウスの作出が必要である。そこで本課題では、上皮癒合の観点から口唇口蓋裂発症モデルマウスを同定することで新規な疾患モデルマウスの作出を試みた。

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (9 results)

All 2023 2022 2020 2019

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (6 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] USP39 is essential for mammalian epithelial morphogenesis through upregulation of planar cell polarity components2022

    • Author(s)
      Kimura-Yoshida C, Mochida K, Kanno SI, Matsuo I.
    • Journal Title

      Communications Biology

      Volume: 378 Issue: 1 Pages: 1-18

    • DOI

      10.1038/s42003-022-03254-7

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] BET proteins are essential for the specification and maintenance of the epiblast lineage in mouse preimplantation embryos.2022

    • Author(s)
      Tsume-Kajioka M, Kimura-Yoshida C, Mochida K, Ueda Y, Matsuo I
    • Journal Title

      BMC Biology

      Volume: 20 Issue: 1 Pages: 01251-0

    • DOI

      10.1186/s12915-022-01251-0

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Intrauterine pressures adjusted by Reichert’s membrane are crucial for early mouse morphogenesis.2020

    • Author(s)
      Yoko Ueda, Chiharu Kimura-Yoshida, Kyoko Mochida, Mami Tsume, Yoshitaka Kameo, Taiji Adachi, Olivier Lefebvre, Ryuji Hiramatsu and Isao Matsuo
    • Journal Title

      Cell Reports

      Volume: 31 Issue: 7 Pages: 107637-107637

    • DOI

      10.1016/j.celrep.2020.107637

    • NAID

      120006951713

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 神経管閉鎖に働く特異な表皮細胞を誘導する新規因子の探索2023

    • Author(s)
      木村‐吉田 千春, 持田 京子,菅野新一郎, 松尾 勲
    • Organizer
      第126回日本小児科学会学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] USP39 is essential for mammalian epithelial morphogenesis through upregulation of planar cell polarity components.2023

    • Author(s)
      Chiharu Kmura-Yoshida, Kyoko Mochida, Shin-Ichiro Kanno, Isao Matsuo
    • Organizer
      The 56th annual meeting of the Japanese Society of Developmental Biologists
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 哺乳動物の上皮形成過程において、脱ユビキチン化酵素USP39因子は平面内極性(PCP経路)構成因子を活性化することで機能する2022

    • Author(s)
      木村-吉田千春、持田京子、菅野新一郎、松尾勲
    • Organizer
      第45回日本分子生物学会年会 (幕張メッセ)
    • Related Report
      2022 Research-status Report
  • [Presentation] Principles in the symmetry breaking in animal and plant development Embryo shape change from sphere to egg-cylinder mediated by intrauterine pressures is crucial for mouse primary axis formation.2020

    • Author(s)
      Yoko Ueda, Chiharu Kimura-Yoshida, Kyoko Mochida, Mami Tsume, Yoshitaka Kameo, Taiji Adachi, Lefebvre Olivier, Ryuji Hiramatsu, Isao Matsuo
    • Organizer
      第43回日本分子生物学会年会 MBSJ2020
    • Related Report
      2020 Research-status Report
  • [Presentation] BRD4はJAK/STAT標的遺伝子の転写活性化を介してマウス着床前胚におけるエピブラストの特異化に必要である2020

    • Author(s)
      爪麻美、木村(吉田)千春、上田陽子、持田京子、松尾勲
    • Organizer
      第43回日本分子生物学会年会 MBSJ2020
    • Related Report
      2020 Research-status Report
  • [Presentation] GRHL3タンパクの細胞質における局在が上皮細胞の分化過程から形態形成過程へと進行させる2019

    • Author(s)
      Kimura-Yoshida C., Mochida K., Nakaya M., Mizutani T., Matsuo I.
    • Organizer
      第52回日本発生生物学会大会 (大阪)
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2025-01-30  

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