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Establishment of Sotos syndrome model mice with intellectual disability and elucidation of the onset mechanism

Research Project

Project/Area Number 20K08183
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 InstitutionSaga University

Principal Investigator

Higashimoto Ken  佐賀大学, 医学部, 准教授 (30346887)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
KeywordsSotos症候群 / 知的障害 / Nsd1 / モデルマウス / エピジェネティクス / 海馬成熟神経 / ヒストンH3リジン36メチル化酵素 / NSD1
Outline of Research at the Start

Sotos症候群 (SoS) は、知的障害を伴う過成長症候群である。原因遺伝子は、ヒストンH3リジン36メチル化酵素をコードするNSD1遺伝子であり、そのハプロ不全によって発症する。過去にNSD1のノックアウトマウスが作製された。しかし、ハプロ不全に相当するヘテロ欠損マウスの表現型は正常であり、一方、ホモ欠損マウスは胚性致死を示した。つまり、現在のところ、SoSのモデルマウスは存在しない。本研究は、SoSの知的障害モデルマウスを樹立し、その発症機構を解明する。将来的に、このモデルマウスを薬のスクリーニングに用いることにより、SoS患者の知的障害に対する治療法の確立を目指す。

Outline of Final Research Achievements

Sotos syndrome (SS) is an overgrowth syndrome associated with intellectual disability. The responsible gene is the Nsd1 gene, which encodes histone H3 lysine 36 methyltransferase. We established conditional knockout mice in which the Nsd1 is deleted in the cerebral cortex and hippocampus. The mice showed a decrease in hippocampal area with shortening of the dentate gyrus and enlargement of the lateral ventricles by hematoxylin staining and MRI analyses. Behavioral phenotyping also showed a decrease in spatial memory. Based on these results, we focused on mature neurons in the hippocampus and conducted comprehensive epigenetic and gene expression analyses. Thereby, we identified some candidate genes involved in the behavioral phenotype.

Academic Significance and Societal Importance of the Research Achievements

Sotos症候群 (SS)の知的障害障害発症メカニズムは全く解明されていない。このことは、モデルマウスが確立していないことが一因である。我々は、初めて大脳皮質と海馬でSSの原因遺伝子であるNsd1を破壊したマウスを作成した。このマウスは海馬面積の減少や空間記憶の低下を示した。また、これら表現型に関与するNsd1の下流に存在する遺伝子を同定した。このように、モデルマウスを使用した分子レベルでの解明は、新たな治療基盤の確立の礎になると考えられる。

Report

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

    (17 results)

All 2023 2022 2021 2020 Other

All Journal Article (9 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 8 results,  Open Access: 6 results) Presentation (6 results) (of which Int'l Joint Research: 1 results) Remarks (2 results)

  • [Journal Article] Possible regulation of ganglioside GD3 synthase gene expression with DNA methylation in human glioma cells.2023

    • Author(s)
      Yurie Yamamoto, Ken Higashimoto, Yuki Ohkawa, Hidenobu Soejima, Kei Kaneko, Yuhsuke Ohmi, Keiko Furukawa, Koichi Furukawa
    • Journal Title

      Glycoconj. J

      Volume: 40 Issue: 3 Pages: 1-10

    • DOI

      10.1007/s10719-023-10108-9

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Donor cord blood aging accelerates in recipients after transplantation2023

    • Author(s)
      Onizuka Makoto、Imanishi Tadashi、Harada Kaito、Aoyama Yasuyuki、Amaki Jun、Toyosaki Masako、Machida Shinichiro、Kikkawa Eri、Yamada Sanetoshi、Nakabayashi Kazuhiko、Hata Kenichiro、Higashimoto Ken、Soejima Hidenobu、Ando Kiyoshi
    • Journal Title

      Scientific Reports

      Volume: 13 Issue: 1 Pages: 2603-2603

    • DOI

      10.1038/s41598-023-29912-2

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Placental Mesenchymal Dysplasia and Beckwith?Wiedemann Syndrome2022

    • Author(s)
      Soejima Hidenobu、Hara Satoshi、Ohba Takashi、Higashimoto Ken
    • Journal Title

      Cancers

      Volume: 14 Issue: 22 Pages: 5563-5563

    • DOI

      10.3390/cancers14225563

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] DNA Methylation Analysis Using Bisulfite Pyrosequencing2022

    • Author(s)
      Higashimoto Ken、Hara Satoshi、Soejima Hidenobu
    • Journal Title

      Methods Mol Bio

      Volume: - Pages: 3-20

    • DOI

      10.1007/978-1-0716-2724-2_1

    • ISBN
      9781071627235, 9781071627242
    • Related Report
      2022 Annual Research Report
  • [Journal Article] Aberrant hypomethylation at imprinted differentially methylated regions is involved in biparental placental mesenchymal dysplasia2022

    • Author(s)
      Aoki Saori、Higashimoto Ken、Hidaka Hidenori、Ohtsuka Yasufumi、Aoki Shigehisa、Mishima Hiroyuki、Yoshiura Koh-ichiro、Nakabayashi Kazuhiko、Hata Kenichiro、Yatsuki Hitomi、Hara Satoshi、Ohba Takashi、Katabuchi Hidetaka、Soejima Hidenobu
    • Journal Title

      Clinical Epigenetics

      Volume: 14 Issue: 1 Pages: 64-64

    • DOI

      10.1186/s13148-022-01280-0

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Phenotypically concordant but epigenetically discordant monozygotic dichorionic diamniotic twins with Beckwith?Wiedemann syndrome2021

    • Author(s)
      Sun Feifei、Hara Satoshi、Tomita Chiyoko、Tanoue Yuka、Yatsuki Hitomi、Higashimoto Ken、Soejima Hidenobu
    • Journal Title

      American Journal of Medical Genetics Part A

      Volume: 185 Issue: 10 Pages: 3062-3067

    • DOI

      10.1002/ajmg.a.62364

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Clinical manifestations of placental mesenchymal dysplasia in Japan: A multicenter case series.2021

    • Author(s)
      Kodera C, Aoki S, Ohba T, Higashimoto K, Mikami Y, Fukunaga M, Soejima H, Katabuchi H.
    • Journal Title

      J Obstet Gynaecol Res.

      Volume: 47 Issue: 3 Pages: 1118-1125

    • DOI

      10.1111/jog.14647

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] TYK2 Promoter Variant Is Associated with Impaired Insulin Secretion and Lower Insulin Resistance in Japanese Type 2 Diabetes Patients.2021

    • Author(s)
      Mori H, Takahashi H, Mine K, Higashimoto K, Inoue K, Kojima M, Kuroki S, Eguchi T, Ono Y, Inuzuka S, Soejima H, Nagafuchi S, Anzai K.
    • Journal Title

      Genes (Basel).

      Volume: 12 Issue: 3 Pages: 400-400

    • DOI

      10.3390/genes12030400

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Hypomethylation of a centromeric block of ICR1 is sufficient to cause Silver-Russell syndrome.2020

    • Author(s)
      Higashimoto K, Watanabe H, Tanoue Y, Tonoki H, Tokutomi T, Hara S, Yatsuki H, Soejima H.
    • Journal Title

      J Med Genet.

      Volume: - Issue: 6 Pages: 422-425

    • DOI

      10.1136/jmedgenet-2020-106907

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Sotos症候群モデルマウスの樹立と表現型解析2023

    • Author(s)
      東元 健、高雄 啓三、松久 葉一、吉岡 芳親、村田 祐造、佐久本 孟寿、原 聡史、北嶋 修司、青木 茂久、吉浦 孝一郎、副島 英伸
    • Organizer
      第16回エピジェネティクス研究会年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Phenotypically concordant but epigenetically discordant monozygotic dichorionic diamniotic twins with Beckwith-Wiedemann syndrome.2021

    • Author(s)
      Soejima H, Sun F, Yatsuki H, Higashimoto K, Hara S
    • Organizer
      European Society of Human Genetics Conference, 2021 Virtual Conference.
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 表現型は一致するがDNAメチル化状態が一致しないBeckwith-Wiedemann症候群双胎(二絨毛膜二羊膜)の1例2021

    • Author(s)
      原 聡史、孫 菲菲、富田 知世子、田上 由香、八木 ひとみ、東元 健、副島 英伸
    • Organizer
      第66回日本人類遺伝学会
    • Related Report
      2021 Research-status Report
  • [Presentation] Beckwith-Wiedemann症候群に合併した副腎性クッシング症候群の一例2021

    • Author(s)
      八木 弘子、佐藤 知彦、神尾 卓哉、東元 健、副島 英伸、照井 君典
    • Organizer
      第29回特定非営利活動法人東北内分泌研究会・第41回日本内分泌学会東北地方会
    • Related Report
      2021 Research-status Report
  • [Presentation] DNA methylation analysis of multiple imprinted DMRs in Sotos syndrome reveals IGF2-DMR0 as a DNA methylation-dependent, P0 promoter-specific enhancer.2021

    • Author(s)
      東元 健, 渡邊 英孝, 三宅 紀子, 森田 純代, 堀居 拓郎, 畑田 出穂, 松本 直通, 副島 英伸.
    • Organizer
      第14回日本エピジェネティクス研究会年会
    • Related Report
      2020 Research-status Report
  • [Presentation] Hypomethylation of a centromeric block of ICR1 is sufficient to cause Silver-Russell syndrome2020

    • Author(s)
      東元 健, 渡邉 聖, 田上 由香, 外木 秀文, 德富 智明, 原 聡史, 八木 ひとみ, 副島 英伸
    • Organizer
      第65回日本人類遺伝学会
    • Related Report
      2020 Research-status Report
  • [Remarks] 佐賀大学医学部分子生命科学講座 分子遺伝学・エピジェネティクス分野

    • URL

      https://www.biomol.med.saga-u.ac.jp/mbg/

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
  • [Remarks]

    • URL

      https://www.biomol.med.saga-u.ac.jp/mbg/

    • Related Report
      2020 Research-status Report

URL: 

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

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