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Proteomic analysis of human semen for elucidation of etiologies and development of biomarker in idiopathic male infertility

Research Project

Project/Area Number 18K16739
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 56030:Urology-related
Research InstitutionYokohama City University

Principal Investigator

Takeshima Teppei  横浜市立大学, 附属市民総合医療センター, 助教 (80811603)

Project Period (FY) 2018-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords男性不妊症 / プロテオミクス / バイオマーカー探索 / 特発性男性不妊症 / プロテオーム解析 / 精子 / 精索静脈瘤 / 造精機能障害 / 酸化ストレス / 男性不妊 / タンパク質解析 / 精子DNA / 精子DNA断片化
Outline of Final Research Achievements

Protein A, a spermatogenesis-related protein (related to mitochondrial function), and B, an epilepsy-related protein (related to cilia and flagella), as candidate biomarkers, were suggested to be downregulated in the idiopathic male infertility group (already verified by Western-Blotting).

Comparison and quantification of proteins expressed in spermatozoa of patients with spermatogenesis dysfunction due to anticancer drug administration and those with idiopathic spermatogenesis dysfunction suggested that epilepsy-related proteins and oxidative stress-related proteins are highly expressed in the anticancer drug administration group, but this was not verified in WB. In the future, we plan to quantitatively compare proteins in sperm of patients with impaired spermatogenesis after anticancer drug administration and those with normal semen findings after anticancer drug administration.

Academic Significance and Societal Importance of the Research Achievements

現在、我が国において合計特殊出生率は減少の一途を辿っており、深刻な少子化が進んでいる。現在5-6組に1組のカップルが不妊と考えられており、その原因の約半数が男性因子が関与している。
男性不妊の約半数が原因の特定が困難である特発性男性不妊症であり、病態が不明であるがゆえに治療介入が困難であるという現状がある。
そのため、特発性男性不妊症の原因解明および治療法の開発目的に精液中(精子・精漿)のバイオマーカーとなるタンパク質を同定するために本研究を行い、複数のマーカー候補となるタンパク質を同定した。今後検証を重ね、特発性男性不妊症の治療法確立に繋げていきたいと考えている。

Report

(7 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (3 results)

All 2021

All Presentation (3 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Presentation] 抗がん剤投与後の精液中活性酸素と造精機能障害の関連に関する検討2021

    • Author(s)
      竹島 徹平
    • Organizer
      日本アンドロロジー学会第40回学術大会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Analysis on alternations of sperm protein profiles to elucidate the mechanism of impaired spermatogenesis by cancer chemotherapy2021

    • Author(s)
      Teppei Takeshima, Shinnosuke Kuroda, Yasushi Yumura, Yoko Ino, Yayoi Kimura
    • Organizer
      European Society of Reproduction and Embryology (ESHRE)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Analysis on alternations of sperm protein profiles to elucidate the mechanism of impaired spermatogenesis by cancer chemotherapy2021

    • Author(s)
      Teppei Takeshima, Shinnosuke Kuroda, Yasushi Yumura, Yoko Ino, Yayoi Kimura
    • Organizer
      American Society of Reproductive Medicine (ASRM)
    • Related Report
      2020 Research-status Report

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Published: 2018-04-23   Modified: 2025-01-30  

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