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Mechanisms of intestinal dysfunction in fetal growth restriction

Research Project

Project/Area Number 22K20935
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0905:Surgery of the organs maintaining homeostasis and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Ichinose Mari  東京大学, 医学部附属病院, 助教 (60954849)

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腸管機能障害 / 胎児発育不全 / 妊娠高血圧腎症 / 消化管機能 / 腸管免疫 / 神経 / 腸管機能
Outline of Research at the Start

胎児発育不全(fetal growth restriction: FGR)は、胎盤機能不全を主たる原因とし、新生児期の消化管機能障害との関連が知られている。FGRにおける腸管の組織・分子学的異常については、十分な解明がされていない。腸管免疫系の過剰反応・腸管蠕動運動低下は、FGRで生じやすい壊死性腸炎の原因とされている。近年、腸管神経・腸管免疫・腸内細菌叢のクロストークの分子機構の一端が解明され、注目を集めている。そこで、本研究は、FGRマウスモデルを用いて、腸管での神経・免疫クロストークに関する分子機構を明らかにし、腸管脆弱性に対する治療可能性を検証する。

Outline of Final Research Achievements

Fetal growth restriction (FGR), which is primarily caused by placental insufficiency, has been suggested to be associated with gastrointestinal dysfunction in the neonatal period. In the present study, we found that 22 (18.5%) of 119 preterm infants had intestinal dysfunction, indicating that FGR is a risk factor. In addition, the fetal small intestine of a model mouse with FGR and preeclampsia was analyzed. In FGR mice, shortening of the intestinal tract and reduction of epithelial secretory cells were observed. RNAseq identified 226 differentially expressed genes. Gene expression involved in intestinal immunity including lactotransferrin and mucosal immunity to external antigens was found to be decreased in FGR mice.

Academic Significance and Societal Importance of the Research Achievements

早産児のうち、血流異常に長期間さらされたFGR児は、腸管機能障害のハイリスク群であることが同定され、慢性的な子宮内ストレスが出生後の腸管機能の脆弱性を引き起こしている可能性が示唆された。
また、マウスモデルを用いてFGRが腸管に与える組織・分子学的変化を検証し、FGRにより、仔の腸管発達は未熟な状態となり、出生後の食餌抗原暴露において脆弱になりやすいことが示された。PEモデルマウス腸管でラクトトランスフェリンなどの外的抗原からの保護に働く因子の発現が低下している傾向にあった。FGRにおける消化管機能障害を来す分子学的機構の一端が解明され、今後の治療戦略に寄与する可能性がある。

Report

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

    (6 results)

All 2023

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

  • [Journal Article] Loss of Grem1-lineage chondrogenic progenitor cells causes osteoarthritis2023

    • Author(s)
      Ng Jia Q.、Jafarov Toghrul H.、Little Christopher B.、Wang Tongtong、Ichinose Mari、Suzuki Nobumi、Goyne Jarrad M.、Kobayashi Hiroki、Wang Timothy C.、Haynes David R.、Menicanin Danijela、Gronthos Stan、Worthley Daniel L.、Woods Susan L.、Mukherjee Siddhartha
    • Journal Title

      Nature Communications

      Volume: 14 Issue: 1 Pages: 6909-6909

    • DOI

      10.1038/s41467-023-42199-1

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Upregulation of autotaxin by oxidative stress via Nrf2 activation: A novel insight into the compensation mechanism in preeclamptic placenta2023

    • Author(s)
      Yanagisawa Manami、Nagamatsu Takeshi、Kurano Makoto、Misumi Fumi、Taguchi Ayumi、Akiba Naoya、Ichinose Mari、Kumasawa Keiichi、Iriyama Takayuki、Fujii Tomoyuki、Yatomi Yutaka、Osuga Yutaka
    • Journal Title

      Journal of Reproductive Immunology

      Volume: 160 Pages: 104153-104153

    • DOI

      10.1016/j.jri.2023.104153

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Engineered bacteria detect tumor DNA2023

    • Author(s)
      Cooper Robert M.、Wright Josephine A.、Ng Jia Q.、Goyne Jarrad M.、Suzuki Nobumi、Lee Young K.、Ichinose Mari、Radford Georgette、Ryan Feargal J.、Kumar Shalni、Thomas Elaine M.、Vrbanac Laura、Knight Rob、Woods Susan L.、Worthley Daniel L.、Hasty Jeff
    • Journal Title

      Science

      Volume: 381 Issue: 6658 Pages: 682-686

    • DOI

      10.1126/science.adf3974

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Possible risks and benefits of adenomyomectomy on pregnancy outcomes: a retrospective analysis2023

    • Author(s)
      Sayama Seisuke、Iriyama Takayuki、Hashimoto Ayako、Suzuki Kensuke、Ariyoshi Yu、Yano Eriko、Toshimitsu Masatake、Ichinose Mari、Seyama Takahiro、Sone Kenbun、Kumasawa Keiichi、Hirota Yasushi、Osuga Yutaka
    • Journal Title

      AJOG Global Reports

      Volume: 3 Issue: 4 Pages: 100265-100265

    • DOI

      10.1016/j.xagr.2023.100265

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Differences in the incidence of obstetric complications depending on the extent and location of adenomyosis lesions2023

    • Author(s)
      Hashimoto Ayako、Iriyama Takayuki、Sayama Seisuke、Okamura Asuka、Kato Kosuke、Fujii Tatsuya、Kubota Kaori、Ichinose Mari、Sone Kenbun、Kumasawa Keiichi、Nagamatsu Takeshi、Hirota Yasushi、Osuga Yutaka
    • Journal Title

      The Journal of Maternal-Fetal & Neonatal Medicine

      Volume: 36 Issue: 2

    • DOI

      10.1080/14767058.2023.2226789

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Fetal growth restriction with Doppler abnormality predisposes postnatal intestinal disorder in preterm infants2023

    • Author(s)
      大谷 知廣, 市瀬 茉里,有吉 悠,利光 正岳,佐山 晴亮,瀬山 貴博,熊澤 惠一, 入山 高行,廣田 泰,大須賀 穣
    • Organizer
      第76回日本産婦人科学会学術講演会
    • Related Report
      2023 Annual Research Report

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

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