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The function of prostanoids in blastocyst implantation

Research Project

Project/Area Number 22K16852
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 56040:Obstetrics and gynecology-related
Research InstitutionThe University of Tokyo

Principal Investigator

Akaeda Shun  東京大学, 医学部附属病院, 届出研究員 (10898084)

Project Period (FY) 2022-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2023: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2022: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords着床不全 / 子宮内膜 / COX2 / プロスタグランジン / エピゲノム修飾 / マウスモデル / 着床 / 遺伝子 / 胚盤胞 / 活性化胚 / ヒストン修飾 / プロスタノイド
Outline of Research at the Start

妊娠初期の現象である着床において、プロスタノイドの重要性は以前から指摘されてきたが、直接的エビデンスがほとんどなかった。本研究では、胚浸潤という現象に焦点をあて、その異常をきたすCOX2の子宮特異的ノックアウトマウスとin vitroの新規胚浸潤モデルを用いて、胚浸潤を調節する脂質のクオリティやその担当脂質を明らかにする。本研究により、ヒト着床障害の新規診断・治療法確立へ向けた科学的基盤構築を目指す。

Outline of Final Research Achievements

Recurrent implantation failure is a major issue in reproductive medicine. In this study, we focused on the phenomenon of embryonic invasion and identified functional factors in implantation, especially prostaglandins. Using genetically modified mice with implantation failure, we elucidated the functional factors and functional lipids that regulate implantation. The effects of PGE2 and PGD2 as functional lipids regulated by COX2 in the uterus and the control of implantation were demonstrated, as well as the control of implantation through uterine epigenome modification. This research has clarified part of the pathology of implantation failure, and we have discovered candidate molecules as indicators of endometrial implantation capacity, providing important knowledge for the development of future diagnosis and treatment methods for implantation failure.

Academic Significance and Societal Importance of the Research Achievements

本研究では、胚浸潤という現象に焦点をあて、着床における機能的因子、特にプロスタグランジンの同定を行った。着床の異常をきたす遺伝子改変マウスを用いて着床を観察する生体モデルにより着床を調節する機能的因子、機能的脂質が解明された。本研究により着床不全の病態の一端が明らかとなり、子宮内膜の着床能の指標として候補分子を見出すことができた。着床不全の新規診断・治療法確立へ向けた科学的基盤構築に繋がる研究成果といえる。

Report

(2 results)
  • 2023 Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (4 results)

All 2022 2021

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 1 results)

  • [Journal Article] Constant Activation of STAT3 Contributes to the Development of Adenomyosis in Females2022

    • Author(s)
      Hiraoka Takehiro、Hirota Yasushi、Aikawa Shizu、Iida Rei、Ishizawa Chihiro、Kaku Tetsuaki、Hirata Tomoyuki、Fukui Yamato、Akaeda Shun、Matsuo Mitsunori、Shimizu-Hirota Ryoko、Takeda Norihiko、Osuga Yutaka
    • Journal Title

      Endocrinology

      Volume: 163 Issue: 5

    • DOI

      10.1210/endocr/bqac044

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] A gene network of uterine luminal epithelium organizes mouse blastocyst implantation2022

    • Author(s)
      Aikawa Shizu、Hirota Yasushi、Fukui Yamato、Ishizawa Chihiro、IIda Rei、Kaku Tetsuaki、Hirata Tomoyuki、Akaeda Shun、Hiraoka Takehiro、Matsuo Mitsunori、Osuga Yutaka
    • Journal Title

      Reproductive Medicine and Biology

      Volume: 21 Issue: 1

    • DOI

      10.1002/rmb2.12435

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Levonorgestrel-Releasing Intrauterine System Improves Menorrhagia-Related Quality of Life in Patients with Symptomatic Adenomyosis2022

    • Author(s)
      Ishizawa Chihiro、Hirota Yasushi、Iida Rei、Kaku Tetsuaki、Hirata Tomoyuki、Fukui Yamato、Omura Erika、Akaeda Shun、Hiraoka Takehiro、Matsuo Mitsunori、Osuga Yutaka
    • Journal Title

      Reproductive Sciences

      Volume: 30 Issue: 3 Pages: 966-973

    • DOI

      10.1007/s43032-022-01077-9

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Uterine Receptivity is Reflected by LIF Expression in the Cervix2021

    • Author(s)
      Fukui Yamato、Hirota Yasushi、Aikawa Shizu、Ishizawa Chihiro、Iida Rei、Kaku Tetsuaki、Hirata Tomoyuki、Akaeda Shun、Hiraoka Takehiro、Matsuo Mitsunori、Osuga Yutaka
    • Journal Title

      Reproductive Sciences

      Volume: 29 Issue: 5 Pages: 1457-1462

    • DOI

      10.1007/s43032-021-00816-8

    • Related Report
      2022 Research-status Report
    • Peer Reviewed

URL: 

Published: 2022-04-19   Modified: 2025-01-30  

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