• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Mechanisms of generation of sperm heterogeneity

Research Project

Project/Area Number 21K19175
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 42:Veterinary medical science, animal science, and related fields
Research InstitutionTohoku University

Principal Investigator

Hara Kenshiro  東北大学, 農学研究科, 准教授 (60551546)

Co-Investigator(Kenkyū-buntansha) 盧 尚建  東北大学, 農学研究科, 教授 (90322130)
Project Period (FY) 2021-07-09 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2022: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2021: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywords精子 / 精巣 / マウス
Outline of Research at the Start

動物の精液中に含まれる精子集団の受精能・運動能などの品質は雄の妊孕性を決定する重要要素である。精子の形態的ばらつきにみられるように、精液中には性質の異なる精子が存在している。ヒトや家畜では精子の品質低下が報告されており、これらは人類の存続を脅かす問題となっているが有効な対策は存在しない。この社会要請に応えるため、本研究では雄体内における精子の品質のばらつきの分子実体とその発生要因を解析する。

Outline of Final Research Achievements

The decline in the quality of animal sperm has been reported as a problem that can reduce livestock productivity. However, effective methods to address this issue do not currently exist, and there is a need to understand the mechanisms that govern sperm quality. In this study, we have made progress in developing foundational techniques to analyze factors that influence the quality of sperm in the male body, using mice as a model. While there were some experiments that did not proceed as planned, there were also certain advancements, such as the development of a system that incorporates fluorescent labeling into the sperm, enabling long-term tracing.

Academic Significance and Societal Importance of the Research Achievements

本研究で得られた成果は、ほ乳動物のオス体内における精子の追跡を可能にするものであり、精子の品質制御の理解に資する解析技術の基礎となるものである。この技術シーズの利活用を通じて、将来的に、ほ乳動物の精子の品質を決める新しい分子メカニズムの理解が期待される。その知見を家畜の人工授精の効率化、野生動物の繁殖制御、さらには男性不妊症の研究に応用することで、農学的・医学的に有用な生殖技術へと発展することが期待される。

Report

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

    (4 results)

All 2022 2021 Other

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (1 results) Remarks (1 results)

  • [Journal Article] Characteristics of alpha smooth muscle actin-positive peritubular cells in prepubertal bovine testes2022

    • Author(s)
      Kawabe Yusuke、Numabe Takashi、Tanemura Kentaro、Hara Kenshiro
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 609 Pages: 48-53

    • DOI

      10.1016/j.bbrc.2022.03.149

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Persistence of undifferentiated spermatogonia in aged Japanese Black cattle.2021

    • Author(s)
      Kawahara T, Kanouchi M, Naniwa Y, Koyago M, Numabe T, Mizutani K, Tanemura K, Hara K.
    • Journal Title

      Anim Sci J.

      Volume: 92(1) Issue: 1

    • DOI

      10.1111/asj.13572

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 動く精子幹細胞におけるラミニン発現の役割2022

    • Author(s)
      川邉 悠介
    • Organizer
      第115回日本繁殖生物学会
    • Related Report
      2022 Annual Research Report
  • [Remarks] 動物生殖科学分野HP

    • URL

      https://www.agri.tohoku.ac.jp/seisyoku/

    • Related Report
      2022 Annual Research Report

URL: 

Published: 2021-07-13   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi