• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Kinetics of B cell subset for antibody production in alloresponse

Research Project

Project/Area Number 19K07254
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

Kitazawa Yusuke  獨協医科大学, 医学部, 助教 (00467581)

Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywordsアロ抗体産生応答 / 辺縁帯B細胞 / 濾胞B細胞 / FITC-Ficoll / FITC-KLH / FITC-Allo T cell / αFITC-AFCs / 形質細胞 / 活性化B細胞 / 辺縁帯B細胞 / 濾胞B細胞 / FITC-Dextran / アロ応抗体産生応答 / 成熟B細胞 / 多重免疫染色 / 形態学的解析 / 脾摘
Outline of Research at the Start

本研究は、アロ免疫応答におけるアロB応答の機序を解明することである。初年度はFITC標識dextran(辺縁帯B細胞(MZB)応答を優位に誘導する抗原)またはFITC標識KLH(濾胞B細胞(FOB)応答を優位に誘導する抗原)移入動物の成熟B細胞応答をコントロールとしてアロT細胞移入モデルと対比し、アロ成熟B細胞応答の関与を推測する。2・3年目はアロ成熟B細胞より分化したアロAFCの性質とアロメモリーB細胞のタイプおよび寿命を明らかにする。以上によりアロB応答の機序を解明することができる。

Outline of Final Research Achievements

There are two major subgroups of mature B cells in the spleen: follicular B cells (FOB) and marginal zone B cells (MZB), both of which are important cells for inducing humoral immunity. However, their behavior in alloreaction has not been reported. Therefore, we set up an animal model in which MZB or FOB-dependent responses occur, and the dynamic patterns of the AlloB reaction were compared using immunohistochemical staining. The result, alloresponses induced T cell responses (T-dependent) and showed FOB-dominant proliferative responses, such as GC formation associated with FOB responses. Furthermore, antigen-specific AFCs did not show early induction into AFCs as in MZB responses, and showed characteristics similar to those of FOB responses (induction time, kinetic pattern, properties). Therefore, at this stage, it is suggested that alloresponses are FOB-dominant reactions.

Academic Significance and Societal Importance of the Research Achievements

研究代表者は、アロT細胞移入後の宿主脾臓outer PALS領域にて独特なB細胞動態を発見した。それは、胚中心(GC)形成前に辺縁帯B細胞(MZB)由来と考えられるAFC応答が起こり、GC形成後に濾胞B細胞(FOB)由来のAFC応答を示したことである。さらに脾摘した宿主に、アロT細胞移入後の宿主血中のドナー抗体価を測定すると、正常(脾臓有り)に比べアロIgM抗体産生が顕著に低下していた。本研究は、アロB応答は、MZBとFOBが混在した独特の動態を示し、脾臓特有のMZBが記憶免疫に関与するとういう新しい学説になるという意義がある。

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (2 results)

All 2023 2020

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

  • [Journal Article] Suppression of liver transplant rejection by anti-donor MHC antibodies via depletion of donor immunogenic dendritic cells2020

    • Author(s)
      Ueta Hisashi、Xu Xue-Dong、Yu Bin、Kitazawa Yusuke、Yu Enqiao、Hara Yoshiaki、Morita-Nakagawa Miwa、Zhou Shu、Sawanobori Yasushi、Ueha Satoshi、Rokutan Kazuhito、Tanaka Toshiya、Tokuda Nobuko、Matsushima Kouji、Matsuno Kenjiro
    • Journal Title

      International Immunology

      Volume: 33 Issue: 5 Pages: 261-272

    • DOI

      10.1093/intimm/dxaa076

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Involvement of FOB and MZB cell in alloresponse2023

    • Author(s)
      北沢祐介
    • Organizer
      第129回日本解剖学会総会・全国学術集会
    • Related Report
      2023 Annual Research Report

URL: 

Published: 2019-04-18   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi