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Regulatory mechanism(s) of CD77-meidated BCR activation

Research Project

Project/Area Number 21K06074
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 43030:Functional biochemistry-related
Research InstitutionFujita Health University

Principal Investigator

Takematsu Hiromu  藤田医科大学, 医療科学部, 教授 (80324680)

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: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
KeywordsB細胞 / 胚中心 / 獲得免疫 / 糖脂質 / シグナル伝達 / B細胞 / B細胞活性化 / CD77 / CD19 / BCRシグナル伝達 / BCR / 獲得免疫応答 / 細胞内シグナル伝達
Outline of Research at the Start

高親和性の抗体応答や免疫記憶の成立には、胚中心におけるB細胞の活性化が重要である。これまで、胚中心B細胞の検出にはダイナミックな細胞表面糖鎖の変化が利用されてきた。しかしながら、これら糖鎖についての機能的な解析は少ない。本研究は、ヒト胚中心B細胞において発現が誘導される糖脂質CD77に注目して、抗原からのB細胞抗原受容体(BCR)シグナル伝達に対する制御活性を、その標的分子、作用機序などを明らかにすることで、解明していくものである。

Outline of Final Research Achievements

CD77 is a glycosphingolipid molecule induced in the germinal center B cells. CD77 has been used to mark activated B cells in the germinal centers, very important microenvironment arose in the secondary lymphoid organs such as lymph nodes during acquired immunity response to T-cell dependent antigens. CD77 is biosynthesized from lactosylceramide with A4GALT reaction, transferring galactose in alpha1-4 linkage. We developed model B cell system, in which only glycosphingolipid species are differently expressed due to the introduction of various A4GALT cDNA or control vector. Using this cellular model, effect of CD77 on the B cell antigen receptor (BCR) signaling, activation signal for B cells exposed to the antigen for clonal selection, was analyzed. CD77 regulated CD19, a adaptor molecule downstream of BCR, activating PI3Kinase and PH-domain regulated serine/threonine protein kinases such as PDK1 and Akt1. For such regulation, CD19 glycan played important role.

Academic Significance and Societal Importance of the Research Achievements

胚中心においてB細胞は活性化して、抗原特異的な獲得免疫応答がおこる。そのため、胚中心でのB細胞活性化の制御が、獲得免疫応答の制御であるとも言える。本研究では、これまで機能的な裏付けはないものの、胚中心B細胞の検出に用いられてきたCD77の機能的な解析を行った。CD77はBCRシグナル伝達制御因子であり、その制御がシグナル伝達におけるアダプター分子として働くCD19を介する者であることを明らかとした。CD19の糖鎖がその制御活性に関わる事など新たな制御機構の解明にも繋がったので、獲得免疫応答の制御に関わる重要な知見であると言える。

Report

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

    (18 results)

All 2023 2022 2021 Other

All Int'l Joint Research (3 results) Journal Article (8 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 7 results,  Open Access: 2 results) Presentation (6 results) (of which Int'l Joint Research: 1 results) Remarks (1 results)

  • [Int'l Joint Research] Lousiana State University(米国)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] University of Albarta(カナダ)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Lousiana State University(米国)

    • Related Report
      2021 Research-status Report
  • [Journal Article] Improved synthesis of CD22-binding sialosides and its application for further development of potent CD22 inhibitors2023

    • Author(s)
      Suganuma Yuki、Imamura Akihiro、Ando Hiromune、Kiso Makoto、Takematsu Hiromu、Tsubata Takeshi、Ishida Hideharu
    • Journal Title

      Glycoconjugate Journal

      Volume: 40 Issue: 2 Pages: 225-246

    • DOI

      10.1007/s10719-023-10098-8

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] The inhibitory coreceptor CD22 restores B cell signaling by developmentally regulating <i> Cd45 <sup>?/?</sup> </i> immunodeficient B cells2022

    • Author(s)
      Akatsu Chizuru、Alborzian Deh Sheikh Amin、Matsubara Naoko、Takematsu Hiromu、Schweizer Astrid、Abdu-Allah Hajjaj H. M.、Tedder Thomas F.、Nitschke Lars、Ishida Hideharu、Tsubata Takeshi
    • Journal Title

      Science Signaling

      Volume: 15 Issue: 723 Pages: 723-723

    • DOI

      10.1126/scisignal.abf9570

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] USP40 deubiquitinates HINT1 and stabilizes p53 in podocyte damage2022

    • Author(s)
      Takahashi Shohei、Fukuhara Daisuke、Kimura Toru、Fukutomi Toshiyuki、Tanaka Eriko、Mikami Naoaki、Hada Ichiro、Takematsu Hiromu、Nishibori Yukino、Akimoto Yoshihiro、Kiyonari Hiroshi、Abe Takaya、Huber Otmar、Yan Kunimasa
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 614 Pages: 198-206

    • DOI

      10.1016/j.bbrc.2022.05.043

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] A Novel Mouse Model of Idiopathic Nephrotic Syndrome Induced by Immunization with the Podocyte Protein Crb22022

    • Author(s)
      Hada Ichiro、Shimizu Akira、Takematsu Hiromu、Nishibori Yukino、Kimura Toru、Fukutomi Toshiyuki、Kudo Akihiko、Ito-Nitta Noriko、Kiuchi Zentaro、Patrakka Jaakko、Mikami Naoaki、Leclerc Simon、Akimoto Yoshihiro、Hirayama Yoshiaki、Mori Satoka、Takano Tomoko、Yan Kunimasa
    • Journal Title

      Journal of the American Society of Nephrology

      Volume: 33 Issue: 11 Pages: 2008-2025

    • DOI

      10.1681/asn.2022010070

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Involvement of <scp>GLCCI1</scp> in mouse spermatogenesis2022

    • Author(s)
      Takada Masaru、Fukuhara Daisuke、Takiura Toshihiko、Nishibori Yukino、Kotani Masashi、Kiuchi Zentaro、Kudo Akihiko、Beltcheva Olga、Ito‐Nitta Noriko、Nitta Kazuhiro R.、Kimura Toru、Suehiro Jun‐Ichi、Katada Tomohisa、Takematsu Hiromu、Yan Kunimasa
    • Journal Title

      The FASEB Journal

      Volume: 37 Issue: 1

    • DOI

      10.1096/fj.202101667rr

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Coordinated changes in glycosylation regulate the germinal center through CD222022

    • Author(s)
      Enterina Jhon R.、Sarkar Susmita、Streith Laura、Jung Jaesoo、Arlian Britni M.、Meyer Sarah J.、Takematsu Hiromu、Xiao Changchun、Baldwin Troy A.、Nitschke Lars、Shlomchick Mark J.、Paulson James C.、Macauley Matthew S.
    • Journal Title

      Cell Reports

      Volume: 38 Issue: 11 Pages: 110512-110512

    • DOI

      10.1016/j.celrep.2022.110512

    • Related Report
      2021 Research-status Report
  • [Journal Article] Andrographolide, isolated from Andrographis paniculata , induces apoptosis in monocytic leukemia and multiple myeloma cells via augmentation of reactive oxygen species production.2021

    • Author(s)
      Doi H, Matsui T, Dijkstra JM, Ogasawara A, Higashimoto Y, Imamura S, Ohye T, Takematsu H, Katsuda I, Akiyama H
    • Journal Title

      F1000Res.

      Volume: - Pages: 542-542

    • DOI

      10.12688/f1000research.53595.2

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The Protein Tyrosine Phosphatase SHP-1 (PTPN6) but Not CD45 (PTPRC) Is Essential for the Ligand-Mediated Regulation of CD22 in BCR-Ligated B Cells2021

    • Author(s)
      Alborzian Deh Sheikh Amin、Akatsu Chizuru、Abdu-Allah Hajjaj H. M.、Suganuma Yuki、Imamura Akihiro、Ando Hiromune、Takematsu Hiromu、Ishida Hideharu、Tsubata Takeshi
    • Journal Title

      The Journal of Immunology

      Volume: 206 Issue: 11 Pages: 2544-2551

    • DOI

      10.4049/jimmunol.2100109

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] スフィンゴ糖脂質CD77によるCD19上のN型糖鎖構造の変化はB細胞抗原受容体シグナル伝達の抑制に関わる2023

    • Author(s)
      ◯湯浅大史、内藤裕子、竹松弘
    • Organizer
      糖鎖科学中部拠点第18回若手の力フォーラム(口頭)
    • Related Report
      2022 Research-status Report
  • [Presentation] Modulation of B cell receptor signaling in germinal center B cells by PNA epitope2022

    • Author(s)
      Naito-Matsui Y., Asano H., Hamano-Takada K., Tsubata T., Oka S., Takematsu H.
    • Organizer
      Sialoglyco2022 (Oral)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] ヒト胚中心B細胞マーカーであるスフィンゴ糖脂質CD77はB細胞抗原受容体シグナル伝達を抑制する2022

    • Author(s)
      ◯湯浅大史、内藤裕子、竹松弘
    • Organizer
      第95回日本生化学会大会 (口頭/ポスター)
    • Related Report
      2022 Research-status Report
  • [Presentation] サイコシンによるエンドマイトーシス誘導時の細胞膜陥入2021

    • Author(s)
      渡邉寛、井谷有希、岡昌吾、岩渕和久、小林俊秀、内藤裕子、○竹松弘
    • Organizer
      第15回スフィンゴテラピィ研究会(口頭)
    • Related Report
      2021 Research-status Report
  • [Presentation] ヒト胚中心B細胞マーカーであるスフィンゴ糖脂質CD77はCD19のN型糖鎖付加を亢進させると共にB細胞抗原受容体シグナル伝達を抑制する2021

    • Author(s)
      ◯湯浅大史、濱野久美子、関亮佑、岡昌吾、内藤裕子、竹松弘
    • Organizer
      第63回日本脂質生化学会(口頭)
    • Related Report
      2021 Research-status Report
  • [Presentation] ヒト胚中心B細胞マーカーCD77はB細胞抗原受容体シグナル伝達を抑制する2021

    • Author(s)
      ◯湯浅大史、濱野久美子、関亮佑、岡昌吾、Nursha Ertunc、内藤裕子、竹松弘
    • Organizer
      第85回生化学会中部支部例会(ショートトーク)
    • Related Report
      2021 Research-status Report
  • [Remarks] 免疫医科学分野

    • URL

      http://info.fujita-hu.ac.jp/~yuko.naito/index.html

    • Related Report
      2022 Research-status Report 2021 Research-status Report

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

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