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Study of splicing factor ZRSR1 in spermatogenesis for therapeutic application

Research Project

Project/Area Number 20K06448
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 42030:Animal life science-related
Research InstitutionYokohama City University (2021-2022)
Nippon Medical School (2020)

Principal Investigator

HORIUCHI Keiko  横浜市立大学, 医学部, 助教 (00456203)

Co-Investigator(Kenkyū-buntansha) 浜窪 隆雄  日本医科大学, 先端医学研究所, 教授 (90198797)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
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: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
KeywordsRNAスプライシング / minor spliceosome / ZRSR2 / exon definition / プロテオミクス / Targeted proteomics / ZRSR1 / スプラシイング / ZRSR / スプライシング / マイナースプライシオソーム / 骨髄異形成症候群 / RNAスプラシング / 精子形成
Outline of Research at the Start

ZRSR1抗体を作成し、免疫分離プロテオミクスによりZRSR1結合タンパク質の同定およびminor spliceosome, major spliceosomeの相互作用を明らかにする。スプライシング アッセイ系を用いて、この相互作用によるスプライシングメカニズムを明らかにし、精子形成におけるU12イントロンのスプライシング 効率を検証する。

Outline of Final Research Achievements

ZRSR1/2 have been implicated in 3’ splice site recognition of U12 introns, a rare group of introns (approximately 0.5% in humans) . Our previous study using Zrsr1 mutant mice revealed that increased U12 intron retention inhibited adjacent U2 intron splicing, suggesting mutual influences between neighboring U12 and U2 introns. To further understand the interplay between U2 and U12 intron splicing, we generated a minigene containing U12 intron 5 flanked by U2 introns 4 and 6 of the Rfx5 gene. Minigene analysis showed that 1. U12 intron represses the efficiency of upstream U2 intron splicing, 2. the upstream U2 intron promotes the U12 intron splicing, 3. deletion of 5’ss of U12 intron increased the efficiency of the upstream U2 intron splicing, suggesting an interaction of 5’ss of U12 intron with major spliceosome enhances U12 intron splicing. Proteomic analysis of Zrsr1-interacting proteins identified candidates for exon definition components between minor and major spliceosomes.

Academic Significance and Societal Importance of the Research Achievements

本研究では、Zrsr1変異マウスの解析、分子生物学的、生化学的解析からminor spliceosomeとmajor spliceosome間の相互作用を明らかにし、この相互作用がU12イントロンスプライシング を促進していることを示した。Zrsr1変異マウスは精子形成不全を示し、ZRSR1のパラログであるZRSR2の変異は骨髄異形成症候群の発症と関連することが報告されており、本研究の成果はZRSR1/2によるU12イントロンのスプライシング促進による治療の可能性を持っており、社会的意義が高い。

Report

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

    (7 results)

All 2022 2021 Other

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

  • [Int'l Joint Research] INIA-CSIC(スペイン)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] crg(スペイン)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] INIA-CSIC(スペイン)

    • Related Report
      2021 Research-status Report
  • [Journal Article] Zrsr2 and functional U12-dependent spliceosome are necessary for follicular development2022

    • Author(s)
      Gomez-Redondo Isabel、Pericuesta Eva、Navarrete-Lopez Paula、Ramos-Ibeas Priscila、Planells Benjamin、Fonseca-Balvis Noelia、Vaquero-Rey Aida、Fernandez-Gonzzlez Raul、Laguna-Barraza Ricardo、Horiuchi Keiko、Gutierrez-Adan Alfonso
    • Journal Title

      iScience

      Volume: 25 Issue: 2 Pages: 103860-103860

    • DOI

      10.1016/j.isci.2022.103860

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Wilms’ tumor 1-associating protein complex regulates alternative splicing and polyadenylation at potential G-quadruplex-forming splice site sequences2021

    • Author(s)
      Horiuchi Keiko、Kawamura Takeshi、Hamakubo Takao
    • Journal Title

      Journal of Biological Chemistry

      Volume: 297 Issue: 5 Pages: 101248-101248

    • DOI

      10.1016/j.jbc.2021.101248

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Interaction of major and minor spliceosomes in regulating splicing of U12-type introns2022

    • Author(s)
      堀内恵子、高橋秀尚、Juan Valcarcel
    • Organizer
      第45回日本分子生物学会年会(サイエンスピッチに採択)
    • Related Report
      2022 Annual Research Report
  • [Presentation] WTAP複合体によるオルタナティブスプライシング/ポリアデニレーション制御とG-quadruplex配列の関与、Identification of WTAP complex-regulated alternative splicing/polyadenylation reveals potential G-quadruplex-forming sequences at splice sites2021

    • Author(s)
      堀内恵子
    • Organizer
      第44回日本分子生物学会年会、【ワークショップ:[3AW-07]機能性RNAネットワークによる生体恒常性の維持】
    • Related Report
      2021 Research-status Report

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

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