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Analysis of molecular mechanism of parabronchial lymphoid tissue (BALT) based on the Wnt signal pathway

Research Project

Project/Area Number 21K06755
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 48010:Anatomy-related
Research InstitutionEhime University

Principal Investigator

Haraguchi Ryuma  愛媛大学, 医学系研究科, 准教授 (00423690)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
KeywordsBALT / Wntシグナル / 組織系譜解析 / リンパ組織 / マウス / 気道疾患 / 気管支随伴リンパ組織 / 遺伝子改変マウス
Outline of Research at the Start

呼吸器において粘膜免疫の主体をなすのがBALTと呼ばれる気管支随伴リンパ組織であるが、BALTの機能面における研究と比べ、BALTの発生機序そのものを対象とした研究は大きく立ち遅れた状況にある。そのような中、申請者は、①BALTの顕在化に伴いWntシグナルの活性化が肺の樹状細胞で起こる、②樹状細胞でのWntシグナルの過剰亢進によって抗原刺激に依存することなくBALTが顕在化する、以上2点を先行研究により見出している。本研究では、BALT顕在化への関与が想定されるWntシグナル活性化樹状細胞の機能同定を通じて、BALTの発生機序及びその臨床上の意義を明らかにする。

Outline of Final Research Achievements

BALT (bronchus-associated lymphoid tissue) is a lymphoid tissue that functions as the keystone of airway immune defense against inhalable foreign substances. However,it is only known that it manifests in the bronchiole region of the lungs due to antigen stimulation, and the understanding at the molecular level is still insufficient. Also, excessive BALT makes some airway diseases.We identified the Wnt signal as a signal pathway that promotes BALT, and found that its excessive hyperactivity strongly promotes the development of BALT. We investigated (1) the molecular mechanism of action when BALT manifests in the lungs, and (2) the clinical significance and role of manifested BALT in human respiratory diseases through analysis centered on Wnt signals.

Academic Significance and Societal Importance of the Research Achievements

気道免疫の主体をなすBALTの発生機序を完全に解明することは、呼吸器系でBALTを自由自在に顕在化させることで粘膜面での免疫防御を最大限に強化し、外来異物の侵入・感染に備えるという予防としての先制医療戦略の確立につながる。新型肺炎の世界的な蔓延は記憶に新しいが、呼吸器感染症に対する有効な対抗手段の重要性や必要性が再認識される中、本研究課題の成果が医学的恩恵を社会にもたらす可能性は十分に考えられる。

Report

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

    (16 results)

All 2023 2022 2021

All Journal Article (9 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 9 results,  Open Access: 7 results) Presentation (7 results)

  • [Journal Article] Histone Modification in Histochemistry and Cytochemistry2023

    • Author(s)
      Kitazawa R, Haraguchi R, Kitazawa S.
    • Journal Title

      ACTA HISTOCHEMICA ET CYTOCHEMICA

      Volume: 56 Issue: 3 Pages: 41-47

    • DOI

      10.1267/ahc.23-00014

    • ISSN
      0044-5991, 1347-5800
    • Year and Date
      2023-06-27
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Demethylation in Promoter Region of Severely Damaged Hepatocytes Enhances Chemokine Receptor CXCR4 Gene Expression2023

    • Author(s)
      Ito C, Haraguchi R, Ogawa K, Iwata M, Kitazawa R, Takada Y, Kitazawa S.
    • Journal Title

      Histochem Cell Biol

      Volume: 160 Issue: 5 Pages: 407-4018

    • DOI

      10.1007/s00418-023-02229-x

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Histone modifications in histochemistry and cytochemistry2023

    • Author(s)
      Kitazawa Riko、Haraguchi Ryuma、Kitazawa Sohei
    • Journal Title

      ACTA HISTOCHEMICA ET CYTOCHEMICA

      Volume: -

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Histochemistry, Cytochemistry and Epigenetics2022

    • Author(s)
      Kitazawa S, Ohno T, Haraguchi R, Kitazawa R
    • Journal Title

      ACTA HISTOCHEMICA ET CYTOCHEMICA

      Volume: 55 Issue: 1 Pages: 1-7

    • DOI

      10.1267/ahc.21-00095

    • NAID

      130008164508

    • ISSN
      0044-5991, 1347-5800
    • Year and Date
      2022-02-26
    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] In situ sequence-specific visualization of single methylated cytosine on tissue sections using ICON probe and rolling-circle amplification2022

    • Author(s)
      Kitazawa Sohei、Haraguchi Ryuma、Takaoka Yuki、Kitazawa Riko
    • Journal Title

      Histochemistry and Cell Biology

      Volume: 159 Issue: 3 Pages: 263-273

    • DOI

      10.1007/s00418-022-02165-2

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Novel animal model of soft tissue tumor due to aberrant hedgehog signaling activation in pericyte lineage2022

    • Author(s)
      Haraguchi Ryuma、Kitazawa Riko、Kohara Yukihiro、Imai Yuuki、Kitazawa Sohei
    • Journal Title

      Cell and Tissue Research

      Volume: 388 Issue: 1 Pages: 63-73

    • DOI

      10.1007/s00441-022-03578-0

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Macrophages are requisite for angiogenesis of type H vessels during bone regeneration in mice2022

    • Author(s)
      Kohara Yukihiro、Kitazawa Riko、Haraguchi Ryuma、Imai Yuuki、Kitazawa Sohei
    • Journal Title

      Bone

      Volume: 154 Pages: 116200-116200

    • DOI

      10.1016/j.bone.2021.116200

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] New Insights into Development of Female Reproductive Tract-Hedgehog-Signal Response in Wolffian Tissues Directly Contributes to Uterus Development2021

    • Author(s)
      Haraguchi Ryuma、Yamada Gen、Murashima Aki、Matsumaru Daisuke、Kitazawa Riko、Kitazawa Sohei
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 22 Issue: 3 Pages: 1211-1211

    • DOI

      10.3390/ijms22031211

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] RANK- NFATc1 Signaling Forms Positive Feedback Loop on Rank Gene Expression via Functional NFATc1 Responsive Element in Rank Gene Promoter2021

    • Author(s)
      Kitazawa R, Haraguchi R, Kohara Y, Kitazawa S
    • Journal Title

      Biochem Biophys Res Commun

      Volume: 529(2) Pages: 186-190

    • DOI

      10.1016/j.bbrc.2021.07.100

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Wntシグナル調節分子sFRP4の腎臓老化における機能考察2023

    • Author(s)
      原口竜摩、北澤理子、北澤荘平
    • Organizer
      日本病理学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Wntシグナル調節分子sFRP4の腎臓老化における機能考察2023

    • Author(s)
      原口竜摩、北澤理子、北澤荘平
    • Organizer
      第112回日本病理学会
    • Related Report
      2022 Research-status Report
  • [Presentation] Wntシグナル調節分子sFRP4の腎臓老化における機能考察2022

    • Author(s)
      原口竜摩、北澤理子、北澤荘平
    • Organizer
      第63回日本組織細胞化学会
    • Related Report
      2022 Research-status Report
  • [Presentation] ヘッジホッグシグナルの活性化によって生じるマウス下肢軟部腫瘍病変についての解析2022

    • Author(s)
      原口竜摩、北澤理子、今井祐記、北澤荘平
    • Organizer
      第40回日本骨代謝学会
    • Related Report
      2022 Research-status Report
  • [Presentation] Wntシグナル調節分子sFRP4の腎臓老化における機能考察2022

    • Author(s)
      原口竜摩、小原幸弘、北澤理子、北澤荘平
    • Organizer
      第111回日本病理学会
    • Related Report
      2021 Research-status Report
  • [Presentation] ヘッジホッグシグナル調節因子Hhipの骨格形成過程における役割2021

    • Author(s)
      原口竜摩、小原幸弘、今井祐記、北澤理子、北澤荘平
    • Organizer
      第62回日本組織細胞化学会
    • Related Report
      2021 Research-status Report
  • [Presentation] ヘッジホッグシグナル調節因子Hhipの骨伸長過程における役割2021

    • Author(s)
      原口竜摩、小原幸弘、今井祐記、北澤理子、北澤荘平
    • Organizer
      第39回日本骨代謝学会
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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