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Elucidation of the pathogenic mechanism of structural abnormality of sperm caused by Importin-alpha4 deficiency and serach for a new mechanism of sperm morphogenesis

Research Project

Project/Area Number 20K06455
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 InstitutionNational Institutes of Biomedical Innovation, Health and Nutrition

Principal Investigator

MIYAMOTO Yoichi  国立研究開発法人医薬基盤・健康・栄養研究所, 医薬基盤研究所 創薬デザイン研究センター, サブプロジェクトリーダー (10379084)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords核輸送 / Importin / 精子細胞形成 / 雄性不妊症 / ノックアウトマウス / クロマチン / 遺伝子発現制御 / 精子形成 / KPNA4 / 雄性不妊
Outline of Research at the Start

Importin-αは核局在化シグナル(Nuclear Localization Signal: NLS)受容体として同定され、マウスで6種類、ヒトで7種類のサブタイプが存在して様々なタンパク質の細胞質から核への輸送に機能する。申請者らは最近、サブタイプのひとつであるImportin-α4の遺伝子KOマウスが雄性不妊症状を示すことを発見した。本研究課題は、Importin-α4欠損によって生じる精子の構造異常の発見を端緒に、Importin-α4の新たな機能の発見を通して、精子の形態形成における新規分子メカニズム解明を目指すものである。

Outline of Final Research Achievements

This study aimed to elucidate the molecular mechanism by which the gene knockout (KO) mice of the nuclear transport factor Importin-α4 show male infertility. In addition to structural abnormalities of the head and tail, the KO sperm exhibited a complex phenotype including reduced acrosome response, decreased motility, and abnormal localization of nuclear membrane- and cytoskeleton-related molecules. This is suggested to be caused by a defect in Importin-α4 that affects the expression and localization of molecules important for sperm morphogenesis. This study demonstrates that transcriptional regulatory functions of Importin-α4 are important for normal sperm morphogenesis in mice.

Academic Significance and Societal Importance of the Research Achievements

全世界のカップルの約15%が不妊症であり、その原因の解明は国内外を問わず重要な医学的課題である。遺伝子欠損マウスは不妊症研究の良いモデル動物ではあるが、これまで精巣が主な発現部位である遺伝子を欠損させた場合でもマウスが不妊症を発症しないケースが多く報告されている。一方、我々が樹立したImportin-α4KOマウスは精子の顕著な構造異常を示すなど不妊症研究に最適なモデルであり、本研究ではこのマウスを用いて雄性不妊症発症機序の一端を解明した。本研究の成果は、Importin-α4が精子細胞形成において重要な分子であることを示したものであり、学術的にも社会的にも意義ある研究といえる。

Report

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

    (24 results)

All 2023 2022 2021 2020 Other

All Int'l Joint Research (3 results) Journal Article (11 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 11 results,  Open Access: 5 results) Presentation (10 results) (of which Invited: 1 results)

  • [Int'l Joint Research] Hudson Institute of Medical Research(オーストラリア)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Hudson Institute of Medical Research(オーストラリア)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Hudson Institute of Medical Research(オーストラリア)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Karyopherin α deficiency contributes to human preimplantation embryo arrest2023

    • Author(s)
      Wang Wenjing、Miyamoto Yoichi、Chen B.、Shi J.、Diao F.、Zheng W.、Li Q.、Yu L.、Li L.、Xu Y.、Wu L.、Mao X.、Fu J.、Li B.、Yan Z.、Shi R.、Xue X.、Mu J.、Zhang Z.、Wu T.、Zhao L.、Wang W.、Zhou Z.、Dong J.、Li Q.、Jin L.、He L.、Sun X.、Lin G.、Kuang Y.、Wang L.、Sang Q.
    • Journal Title

      Journal of Clinical Investigation

      Volume: 133 Issue: 2

    • DOI

      10.1172/jci159951

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] ACAGT‐007a, an anti‐cancer compound that modulates ERK MAPK signaling, induces nuclear enrichment of phosphorylated ERK in T3M4 pancreatic cancer cells2023

    • Author(s)
      Khandakar Golam Iftakhar、Miyamoto Yoichi、Satoh Ryosuke、Kishimoto Kenta、Xie Mingzuo、Shih Mengyu、Takasaki Teruaki、Tanabe Genzoh、Oka Masahiro、Sugiura Reiko
    • Journal Title

      Genes to Cells

      Volume: - Issue: 6 Pages: 457-465

    • DOI

      10.1111/gtc.13026

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] SARS-CoV-2 ORF6 disrupts nucleocytoplasmic trafficking to advance viral replication2022

    • Author(s)
      Miyamoto Yoichi、Itoh Yumi、Suzuki Tatsuya、Tanaka Tomohisa、Sakai Yusuke、Koido Masaru、Hata Chiaki、Wang Cai-Xia、Otani Mayumi、Moriishi Kohji、Tachibana Taro、Kamatani Yoichiro、Yoneda Yoshihiro、Okamoto Toru、Oka Masahiro
    • Journal Title

      Communications Biology

      Volume: 5 Issue: 1 Pages: 483-483

    • DOI

      10.1038/s42003-022-03427-4

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Importin α3 (KPNA3) Deficiency Augments Effortful Reward-Seeking Behavior in Mice2022

    • Author(s)
      Aomine Yoshiatsu、Sakurai Koki、Macpherson Tom、Ozawa Takaaki、Miyamoto Yoichi、Yoneda Yoshihiro、Oka Masahiro、Hikida Takatoshi
    • Journal Title

      Frontiers in Neuroscience

      Volume: 16 Pages: 1-13

    • DOI

      10.3389/fnins.2022.905991

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Intestinal microbe-dependent ω3 lipid metabolite αKetoA prevents inflammatory diseases in mice and cynomolgus macaques2022

    • Author(s)
      Nagatake T, Kishino S, Urano E, et al.
    • Journal Title

      Mucosal Immunology

      Volume: 15 Issue: 2 Pages: 289-300

    • DOI

      10.1038/s41385-021-00477-5

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Establishment of a stable SARS-CoV-2 replicon system for application in high-throughput screening2022

    • Author(s)
      Tanaka Tomohisa、Saito Akatsuki、Suzuki Tatsuya、Miyamoto Yoichi、Takayama Kazuo、Okamoto Toru、Moriishi Kohji
    • Journal Title

      Antiviral Research

      Volume: 199 Pages: 105268-105268

    • DOI

      10.1016/j.antiviral.2022.105268

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Importins: Diverse roles in male fertility2022

    • Author(s)
      Nathaniel Benedict, Whiley Penny, Miyamoto Yoichi, Loveland Kate
    • Journal Title

      Seminars in Cell & Developmental Biology

      Volume: 121 Pages: 82-98

    • DOI

      10.1016/j.semcdb.2021.08.002

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Effects of Importin α1/KPNA1 deletion and adolescent social isolation stress on psychiatric disorder-associated behaviors in mice2021

    • Author(s)
      Sakurai Koki, Itou Taichi, Morita Makiko, Kasahara Emiko, Moriyama Tetsuji, Macpherson Tom, Ozawa Takaaki, Miyamoto Yoichi, Yoneda Yoshihiro, Sekiyama Atsuo, Oka Masahiro, Hikida Takatoshi
    • Journal Title

      PLOS ONE

      Volume: 16 Issue: 11 Pages: e0258364-e0258364

    • DOI

      10.1371/journal.pone.0258364

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Genetic loss of importin α4 causes abnormal sperm morphology and impacts on male fertility in mouse2020

    • Author(s)
      Miyamoto Yoichi、Sasaki Mitsuho、Miyata Haruhiko、Monobe Yoko、Nagai Masahiro、Otani Mayumi、Whiley Penny A. F.、Morohoshi Akane、Oki Shinya、Matsuda Junichiro、Akagi Ken‐ichi、Adachi Jun、Okabe Masaru、Ikawa Masahito、Yoneda Yoshihiro、Loveland Kate L.、Oka Masahiro
    • Journal Title

      The FASEB Journal

      Volume: 34 Issue: 12 Pages: 16224-16242

    • DOI

      10.1096/fj.202000768rr

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Total Synthesis of Dictyodendrins A-F by the Gold‐Catalyzed Cascade Cyclization of Conjugated Diyne with Pyrrole2020

    • Author(s)
      Matsuoka Junpei、Inuki Shinsuke、Matsuda Yuka、Miyamoto Yoichi、Otani Mayumi、Oka Masahiro、Oishi Shinya、Ohno Hiroaki
    • Journal Title

      Chemistry - A European Journal

      Volume: 26 Issue: 49 Pages: 11150-11157

    • DOI

      10.1002/chem.202001950

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Novel anti-flavivirus drugs targeting the nucleolar distribution of core protein2020

    • Author(s)
      Tokunaga Makoto、Miyamoto Yoichi、Suzuki Tatsuya、Otani Mayumi、Inuki Shinsuke、Esaki Tsuyoshi、Nagao Chioko、Mizuguchi Kenji、Ohno Hiroaki、Yoneda Yoshihiro、Okamoto Toru、Oka Masahiro、Matsuura Yoshiharu
    • Journal Title

      Virology

      Volume: 541 Pages: 41-51

    • DOI

      10.1016/j.virol.2019.11.015

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] Importins in Reproduction2023

    • Author(s)
      Yoichi Miyamoto
    • Organizer
      Hudson Institute of Medial Research Centre for Reproductive Health special seminor
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Importin αの微小核への分子濃縮2022

    • Author(s)
      木佐貫玲央, 宮本洋一, 岡正啓, 斉藤寿仁
    • Organizer
      日本分子生物学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 核輸送分子の微小核局在に関する研究2022

    • Author(s)
      宮本洋一, 斉藤寿仁, 岡正啓
    • Organizer
      生物機能研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Importin alpha 5(KPNA1)の神経細胞内における新規機能的役割の解明2021

    • Author(s)
      菅原将樹, 水野克俊, 山口楓香, 加藤諒大, 野宮廣貴, 宮本洋一, 岡正啓, 疋田貴俊, 藤田聡, 山田雅巳
    • Organizer
      第73回日本細胞生物学会大会
    • Related Report
      2021 Research-status Report
  • [Presentation] SARS-CoV-2構成因子ORF6による核輸送制御機構2021

    • Author(s)
      宮本洋一, 伊東祐美, 鈴木達也, 田中智久, 坂井祐介, 小井土大, 波田千彰, 王彩霞, 大谷真弓, 森石恆司, 立花太郎, 鎌谷洋一郎, 米田悦啓, 岡本徹, 岡正啓
    • Organizer
      第73回日本細胞生物学会大会
    • Related Report
      2021 Research-status Report
  • [Presentation] importin α5は統合失調症の環境因子暴露への影響を変動させる2021

    • Author(s)
      野宮廣貴, 疋田貴俊, 宮本洋一, 岡正啓, 山田雅巳
    • Organizer
      第94回日本生化学会大会
    • Related Report
      2021 Research-status Report
  • [Presentation] インポーティンαの微小核への分子濃縮現象:染色体不安定性とゲノム進化へのインポーティンαの寄与を考える2021

    • Author(s)
      木佐貫玲央, 宮本洋一, 斉藤寿仁
    • Organizer
      第39回染色体ワークショップ・第20回核ダイナミクス研究会
    • Related Report
      2021 Research-status Report
  • [Presentation] 核小体形成を標的とした抗フラビウイルス薬の同定2020

    • Author(s)
      宮本洋一、德永詢、鈴木達也、大谷真弓、井貫晋輔、江崎剛史、長尾 知生子、水口賢司、大野浩章、米田悦啓、岡本徹、松浦善治、岡正啓
    • Organizer
      日本分子生物学会
    • Related Report
      2020 Research-status Report
  • [Presentation] KPNA1の軸索輸送における機能的役割の解明2020

    • Author(s)
      菅原将樹, 水野克俊, 山口楓香, 野宮廣貴, 宮本洋一, 岡正啓, 疋田貴俊, 藤田聡, 山田雅己
    • Organizer
      日本分子生物学会
    • Related Report
      2020 Research-status Report
  • [Presentation] 核輸送因子Kpna1ノックアウトマウスにおける行動異常の環境による増悪2020

    • Author(s)
      櫻井航輝、 宮本洋一、 盛山哲嗣、 森田真規子、伊藤大一、岡正啓、疋田貴俊
    • Organizer
      日本神経科学会
    • Related Report
      2020 Research-status Report

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

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