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Elucidation of the molecular function of Ahed, a nuclear protein that controls proliferation and differentiation of epidermal keratinocytes.

Research Project

Project/Area Number 19K08773
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53050:Dermatology-related
Research InstitutionKochi University

Principal Investigator

Takaishi Mikiro  高知大学, 教育研究部医療学系臨床医学部門, 助教 (10303223)

Co-Investigator(Kenkyū-buntansha) 佐野 栄紀  高知大学, 教育研究部医療学系臨床医学部門, 教授 (80273621)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords皮膚 / 表皮 / 角化細胞 / RNAスプライシング / スプライソソーム / 表皮角化細胞 / スプライシング / 増殖 / 分化 / 増殖・分化 / 核タンパク質 / spliceosome
Outline of Research at the Start

Ahed (Attenuated hematopoietic development)は、血球の増殖・分化に重要な働きを担う遺伝子として同定された。我々は表皮におけるAhedの役割を明らかにする目的で、表皮特異的Ahed欠損マウスを作成した。結果として、Ahed欠損は、表皮角化細胞の増殖・分化に異常をきたすことを見いだした。しかしながら、Ahedの分子機能は依然不明であるため、これを明らかにすることを目的として研究を行う。

Outline of Final Research Achievements

In this study, to clarify molecular function of the gene, interacting proteins with Ahed were identified with co-immunoprecipitation and mass-spectrometry. As the result, some nuclear proteins including spliceosomal proteins were identified. In vitro protein synthesis and immunoprecipitation confirmed that some spliceosomal proteins were directly interacted with Ahed. Involvement of Ahed in RNA splicing was investigated with full-length cDNA-seq and found unique splicing isoforms were produced in the Ahed KO keratinocytes. Our findings indicate a novel spliceosomal protein Ahed has indispensable roles in cell proliferation of epidermal cells as well as hematopoietic cells by regulating RNA splicing.

Academic Significance and Societal Importance of the Research Achievements

本研究によりAhedは新規のRNAスプライシング制御因子であることが明らかになった。Ahedは多様な臓器で発現していることが明らかになっているので、表皮、造血細胞のみならず様々な細胞系譜で重要な役割を担っていることが示唆される。近年がんをはじめとする様々な疾患にスプライシング関連因子の遺伝子変異が見つかっている。データーベースによれば、いくつかのがんでAhedの遺伝子変異が見つかる。更なる研究により、がんにおけるAhedの関わりが明らかとなれば社会的意義は大きいと考えられる。

Report

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

    (7 results)

All 2021 2020 2019

All Presentation (7 results) (of which Int'l Joint Research: 5 results)

  • [Presentation] Ahed, a novel spliceosomal protein, is essential for the development and maintenance of the epidermis through regulation of mRNA splicing.2021

    • Author(s)
      Mikiro Takaishi, Tatsushi Ishimoto, Masahiro Tokunaga, Chikara Kokubu, Junji Takeda, and Shigetoshi Sano
    • Organizer
      The European Society for Dermatological Research, 50th annual meeitng
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 新規スプライソーソムタンパク質Ahedは表皮の発生とその維持に重要な働きを担う2021

    • Author(s)
      高石 樹朗、石元 達士、徳永 正浩、國府 力、竹田 潤二、佐野 栄紀
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Ahed is a novel component of spliceosome and is required for cell proliferation of epidermal keratinocytes.2020

    • Author(s)
      Mikiro Takaishi, Tatsushi Ishimoto, Masahiro Tokunaga, Chikara Kokubu, Junji Takeda, and Shigetoshi Sano
    • Organizer
      The 45th Annual Meeting of the Japanese Society for Investigative Dermatology
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Ahed, an uncharacterized nuclear protein, is required for epidermal cell growth and differentiation2019

    • Author(s)
      Mikiro Takaishi, Tatsushi Ishimoto, Masahiro Tokunaga, Chikara Kokubu, Junji Takeda, and Shigetoshi Sano
    • Organizer
      JAPAN-SINGAPORE INTERNATIONAL SKIN CONFERENCE 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Ahed plays crucial roles in growth and differentiation of epidermal keratinocytes2019

    • Author(s)
      Mikiro Takaishi, Tatsushi Ishimoto, Masahiro Tokunaga, Chikara Kokubu, Junji Takeda, and Shigetoshi Sano
    • Organizer
      The 49th ESDR Annual Meeting
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Ahed is involved in proliferation and differentiation of epidermal keratinocytes2019

    • Author(s)
      Mikiro Takaishi, Tatsushi Ishimoto, Masahiro Tokunaga, Chikara Kokubu, Junji Takeda, and Shigetoshi Sano
    • Organizer
      The 44th Annual Meeting of the JSID
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 表皮角化細胞の増殖におけるAhedの役割2019

    • Author(s)
      高石 樹朗、石元 達士、徳永 正浩、國府 力、竹田 潤二、佐野 栄紀
    • Organizer
      第42回日本分子生物学会年会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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