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Elucidating the anti-viral responses and host defense mechanisms in the placenta using primary human villous trophoblasts

Research Project

Project/Area Number 22K20982
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0906:Surgery related to the biological and sensory functions and related fields
Research InstitutionNational Center for Child Health and Development

Principal Investigator

Motomura Kenichiro  国立研究開発法人国立成育医療研究センター, 免疫アレルギー・感染研究部, 研究員 (00724329)

Project Period (FY) 2022-08-31 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords栄養膜細胞 / 胎盤 / ウイルス感染症 / 自然免疫 / 初代培養 / 妊娠合併症 / 合胞体栄養膜細胞 / 先天性ウイルス感染症 / 妊娠 / 細胞性栄養膜細胞
Outline of Research at the Start

妊婦のウイルス感染は、胎内感染による児の障害や妊娠合併症を引き起こす。胎盤構成細胞のうち合胞体栄養膜細胞は、母体に感染した病原体の胎児への移行を妨げる免疫学的関門として働く。しかし、その防御メカニズムの全貌はまだ明らかになっていない。本研究では、申請者らが確立した合胞体栄養膜細胞のモデルであるヒト胎盤由来初代分化栄養膜細胞および妊娠モデルマウスを用いて、胎盤の抗ウイルス作用、ウイルスの胎内感染、および胎盤に障害を与えるメカニズムを検討する。これらの結果は、先天性ウイルス感染の新たな予防・治療戦略、および妊娠合併症の新たな発症メカニズムの解明と診断・治療法の開発への展開が期待できる。

Outline of Final Research Achievements

Viral infections during pregnancy result in congenital infections and complications, causing lasting adverse effects on both the mother and child. The mechanisms behind this are poorly understood. To address this, we investigated the antiviral responses of syncytiotrophoblast (STB) to understand how viruses infect the fetus and damage the placenta. Using primary human cytotrophoblasts (CTBs), our transcriptome analysis revealed that the STB initiates an antiviral response when stimulated by synthetic double-stranded RNA (dsRNA). This dsRNA also induced cell death in the STB. Furthermore, the impact of viral infections and cellular damage from adeno-associated viruses varied among different serotypes. Our in vivo studies demonstrated that administering dsRNA to pregnant mice caused placental damage and pregnancy complications. These findings shed light on the antiviral defense mechanisms in the placenta and provide a causal link between viral infection and pregnancy complications.

Academic Significance and Societal Importance of the Research Achievements

妊娠中のウイルス感染症は、先天性感染症や妊娠合併症を引き起こすことが知られており、長期的に母児の健康に悪影響を与える。胎盤は胎児をこれらの先天性感染症から保護しているが、そのメカニズムは明らかになっていない。本研究により、胎盤の抗ウイルス機構と、ウイルスによる妊娠合併症発症機序の一端が明らかとなった。これにより、将来的に妊娠中のウイルス感染に伴う先天性感染症や妊娠合併症の予防方法や、治療戦略の策定に資する可能性がある。

Report

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

    (8 results)

All 2024 2023

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (5 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Implication of viruses in the etiology of preeclampsia2024

    • Author(s)
      Motomura Kenichiro、Morita Hideaki、Naruse Katsuhiko、Saito Hirohisa、Matsumoto Kenji
    • Journal Title

      American Journal of Reproductive Immunology

      Volume: 91 Issue: 4

    • DOI

      10.1111/aji.13844

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Comprehensive Analysis of the Expression and Functions of Pattern Recognition Receptors in Differentiated Cytotrophoblasts Derived from Term Human Placentas2023

    • Author(s)
      Motomura Kenichiro、Morita Hideaki、Okada Naoko、Matsuda Akio、Nakae Susumu、Fujieda Mikiya、Sago Haruhiko、Saito Hirohisa、Matsumoto Kenji
    • Journal Title

      The Journal of Immunology

      Volume: 210 Issue: 10 Pages: 1552-1563

    • DOI

      10.4049/jimmunol.2300008

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Roles of human trophoblasts’ pattern recognition receptors in host defense and pregnancy complications2023

    • Author(s)
      Motomura Kenichiro、Hara Mariko、Ito Ikuyo、Morita Hideaki、Matsumoto Kenji
    • Journal Title

      Journal of Reproductive Immunology

      Volume: 156 Pages: 103811-103811

    • DOI

      10.1016/j.jri.2023.103811

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed
  • [Presentation] Viral infection impairs placenta function by inhibiting differentiation of human cytotrophoblasts2024

    • Author(s)
      Kenichiro Motomura, Keiko Matsubara, Seiji Wada, Haruhiko Sago
    • Organizer
      第76回日本産科婦人科学会学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] . Viral Infection Impairs Placenta Function by Inhibiting Human Cytotrophoblasts’ Differentiation and Fusion into the Syncytiotrophoblast2024

    • Author(s)
      Kenichiro Motomura, Hideaki Morita, Keiko Matsubara, Seiji Wada, Haruhiko Sago, Hirohisa Saito, Kenji Matsumoto
    • Organizer
      The 71st meeting of the Society for Reproductive Investigation
    • Related Report
      2023 Annual Research Report
  • [Presentation] ヒト合胞体栄養膜細胞に発現する自然免疫系受容体の網羅的発現・機能解析2023

    • Author(s)
      本村 健一郎, 森田 英明, 左合 治彦, 斎藤 博久, 松本 健治
    • Organizer
      第38回日本生殖免疫学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Comprehensive analysis of expression of functional pattern recognition receptors in differentiated cytotrophoblasts derived from human term placentas2023

    • Author(s)
      Kenichiro Motomura, Hideaki Morita, Haruhiko Sago, Hirohisa Saito, Kenji Matsumoto
    • Organizer
      The 70st meeting of the Society for Reproductive Investigation
    • Related Report
      2023 Annual Research Report
  • [Presentation] Comprehensive analysis of expression of functional pattern recognition receptors in differentiated cytotrophoblasts derived from human term placentas2023

    • Author(s)
      Kenichiro Motomura
    • Organizer
      The 70th Annual Meeting of the Society for Reproductive Investigation
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research

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Published: 2022-09-01   Modified: 2025-01-30  

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