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The role(s) of UTX, histone demethylase for H3K27me3, in B cell regulatory mechanisms and autoimmune disease pathogenesis

Research Project

Project/Area Number 19K17918
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 54020:Connective tissue disease and allergy-related
Research InstitutionTokyo Women's Medical University

Principal Investigator

Sera Yasuyuki  東京女子医科大学, 医学部, 助教 (40836532)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
KeywordsUTX / B細胞 / B-1細胞 / 辺縁帯B細胞 / 自己免疫疾患 / エピジェネティクス
Outline of Research at the Start

ヒストン脱メチル化酵素UTXは、メチル化されたヒストンH3の27番目のリジン残基を脱メチル化するエピジェネティック因子である。UTXに先天的な機能欠失型変異を有する歌舞伎症候群の患者は、高頻度に自己免疫疾患を発症するが、その発症機構は明らかでない。申請者らの作製したB細胞特異的UTXコンディショナルノックアウトマウスの予備的な解析から、B細胞でのUTX欠失が自己免疫疾患発症に重要な役割を担う可能性が示された。 本研究は、このマウスを用いて、B細胞でのUTX機能不全による自己免疫疾患発症の分子基盤の一端を明らかにし、病態解明や新規治療法開発につながると期待される。

Outline of Final Research Achievements

UTX is a demethylase for trimethylated 27 on histone H3. The patients with Kabuki syndrome have congenital loss-of-function mutations in UTX. Since patients with this disease frequently develop autoimmune diseases, it is expected that the deletion of UTX in immune cells contributes to their pathogenesis, but the details are not clear. To investigate the role(s) of UTX in B cell regulatory mechanisms and autoimmune diseases, we generated B cell-specific UTX-deficient mice. This mice showed various abnormalities in B cell subsets of the innate immune system, such as B-1 cells and marginal zone B cells, which are involved in the pathogenesis of autoimmune diseases. Transcriptome analysis of those cells suggested that BCR signaling might be attenuated.
The results of this study may provide a basis for elucidating the pathogenesis of autoimmune diseases caused by congenital UTX deletion or epigenetic deregulation and for developing therapeutic strategies.

Academic Significance and Societal Importance of the Research Achievements

エピジェネティクスは、クロマチン修飾による、塩基配列によらない可逆的な遺伝子発現制御機構であり、環境変化に感受性を持つ。自己免疫疾患の発症機構には、遺伝的要因に加えて環境要因が発症に重要なことから、エピジェネティクスに関心が寄せられている。本研究の成果は、B細胞のエピジェネティクスによる制御機構の一端を明らかにするとともに、先天性のUTX欠失が原因の歌舞伎症候群でみられる自己免疫疾患や、共通の病態をもつ自己免疫疾患の発症機構解明と治療法開発につながる可能性がある。

Report

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

    (4 results)

All 2022 2021 2020

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

  • [Journal Article] UTX deficiency in neural stem/progenitor cells results in impaired neural development, fetal ventriculomegaly, and postnatal death2022

    • Author(s)
      Koizumi M, Eto H, Saeki M, Seki M, Fukushima T, Mukai S, Ide H, Sera Y, Iwasaki M, Suzuki Y, Tohei A, Kishi Y, Honda H.
    • Journal Title

      FASEB journal

      Volume: 36(12) Issue: 12 Pages: 22662-22662

    • DOI

      10.1096/fj.202201002rr

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] UTX maintains functional integrity of murine hematopoietic system by globally regulating aging-associated genes.2021

    • Author(s)
      Sera Y; Nakata Y; Ueda T; Yamasaki N; Koide S; Kobayashi H; Ikeda KI; Kobatake K; Iwasaki M; Oda H; Wolff L; Kanai A; Nagamachi A; Inaba T; Sotomaru Y; Ichinohe T; Koizumi M; Miyakawa Y; Honda ZI; Iwama A; Suda T; Takubo K; Honda H
    • Journal Title

      Blood.

      Volume: 137 Issue: 7 Pages: 908-922

    • DOI

      10.1182/blood.2019001044

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Kdm6a Deficiency Activates Inflammatory Pathways, Promotes M2 Macrophage Polarization, and Causes Bladder Cancer in Cooperation with p53 Dysfunction2020

    • Author(s)
      Kobatake Kohei et al., Honda Zen-ichiro et al. and Honda Hiroaki
    • Journal Title

      Clinical Cancer Research

      Volume: 26 Issue: 8 Pages: 2065-2079

    • DOI

      10.1158/1078-0432.ccr-19-2230

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] ヒストン修飾因子UTXは老化関連遺伝子を制御することにより造血系維持に関与する2021

    • Author(s)
      世良康如, 中田雄一郎, 上田健, 山崎憲政, 小出周平, 小林央, 池田健一郎, 小畠浩平, 岩崎正幸, 小田秀明, 金井昭教, 長町安希子, 稲葉俊哉, 外丸祐介, 一戸辰夫, 小泉美穂, 宮川佳彦, 本田善一郎, 岩間厚志, 須田年生, 田久保圭誉, 本田浩章
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Research-status Report

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Published: 2019-04-18   Modified: 2024-01-30  

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