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Molecular Mechanisms of Progesterone Receptor Signaling to Maintain Pregnancy and Induce Preterm Birth by Disruption

Research Project

Project/Area Number 20K18204
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 56040:Obstetrics and gynecology-related
Research InstitutionNippon Medical School

Principal Investigator

Sugita Yosuke  日本医科大学, 医学部, 助教 (60774354)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2022: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords早産 / 子宮頸管無力症 / 子宮頸管縫縮術 / プロゲステロン / 子宮頸管熟化 / 線維芽細胞 / 無菌性炎症 / 好酸球性炎症 / プロゲステロン消退 / プロゲステロン応答 / 機能的プロゲステロン消退 / 頸管無力症 / リモデリング
Outline of Research at the Start

子宮頸部は妊娠期間の多くでは固く閉じて子宮内容を維持し、陣痛発来前には軟化・熟化し、児の通路として開大する。妊娠維持に必須のホルモンであるプロゲステロン(P4)の作用と、その消退による変化と考えられているが、分子レベルでの理解は進んでいない。
本研究ではプロゲステロン標的分子について、マウスを用いて妊娠維持及び子宮頸管熟化における役割を解明する。ヒト早産の病態を分子レベルで理解するとともに、新たな分子メカニズムを標的とした周産期医療戦略の礎とする。

Outline of Final Research Achievements

To elucidate the mechanism of pregnancy maintenance by progesterone (P4) signaling in the cervix, we established cervical fibroblast culture lines from patients with different clinical backgrounds and compared P4 responses. Cervical tissue samples were obtained from patients with refractory cervical insufficiency (CI) who underwent transabdominal cervical suture and maintained pregnancy, and from controls with cervical immaturity, respectively, at the time of cesarean section. Analysis of the changes caused by the addition of P4 to the cultured cells showed that the P4 response observed in the immature cases was attenuated in CI. Furthermore, we analyzed the expression of P4 receptor (PR) by real-time PCR, Western blotting, and cell immunostaining, and found that PR was significantly decreased in CI.

Academic Significance and Societal Importance of the Research Achievements

原因不明であった難治性子宮頸管無力症において、プロゲステロン受容体の発現低下に起因するプロゲステロン応答の破綻が原因の一因となっていることが示唆された。新たな早産治療戦略の礎となりうる重要な知見を得た。

Report

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

    (8 results)

All 2023 2022 2021 2020

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (7 results)

  • [Journal Article] Characteristic impairment of progesterone response in cultured cervical fibroblasts obtained from patients with refractory cervical insufficiency2023

    • Author(s)
      Sugita Yosuke、Kuwabara Yoshimitsu、Katayama Akira、Matsuda Shigeru、Manabe Ichiro、Suzuki Shunji、Oishi Yumiko
    • Journal Title

      Scientific Reports

      Volume: 13 Issue: 1 Pages: 11709-11709

    • DOI

      10.1038/s41598-023-37732-7

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] プロゲステロン消退型早産マウスの頸管熟化過程におけるCCL11を介した好酸球性炎症の検討2022

    • Author(s)
      杉田 洋佑、桑原 慶充、松田 繁、大石 由美子 、鈴木 俊治
    • Organizer
      日本産科婦人科学会学術集会
    • Related Report
      2022 Research-status Report
  • [Presentation] マウス頸管熟化過程において、プロゲステロン消退はCCL11を介した好酸球性炎症を誘導する2021

    • Author(s)
      杉田 洋佑、桑原 慶充、松田 繁、大石 由美子 、鈴木 俊治
    • Organizer
      日本生殖免疫学会
    • Related Report
      2021 Research-status Report
  • [Presentation] プロゲステロン消退に伴う子宮頸管熟化にCCL11-CCR3 axisによる無菌性炎症が関与する2021

    • Author(s)
      杉田 洋佑、桑原 慶充、竹下 俊行
    • Organizer
      日本周産期新生児学会
    • Related Report
      2021 Research-status Report
  • [Presentation] 難治性頸管無力症検体を用いた頸管熟化に伴うプロゲステロン応答性変化の検証2021

    • Author(s)
      杉田 洋佑、桑原 慶充、大石 由美子 、竹下 俊行
    • Organizer
      日本産科婦人科学会
    • Related Report
      2021 Research-status Report
  • [Presentation] Progesterone withdrawal induces eosinophilic inflammation in the process of mouse cervical ripening2021

    • Author(s)
      Yosuke Sugita, Yoshimitsu Kuwabara, Shigeru Matsuda, Yumiko Oishi, Toshiyuki Takeshita
    • Organizer
      Society for Reproductive Investigation
    • Related Report
      2021 Research-status Report
  • [Presentation] Progesterone responsiveness change associated with cervical ripening using a human cervical fibroblast culture system2021

    • Author(s)
      Yosuke Sugita, Yoshimitsu Kuwabara, Yumiko Oishi, Toshiyuki Takeshita
    • Organizer
      日本産科婦人科学会
    • Related Report
      2020 Research-status Report
  • [Presentation] ヒト子宮頸部線維芽細胞を用いた頸管熟化に伴うプロゲステロン応答性および潜在的な炎症性変化の検証2020

    • Author(s)
      杉田洋佑、桑原慶充、竹下俊行
    • Organizer
      日本生殖免疫学会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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