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Bリンパ球における受容体エンドサイトーシスとエンドソームシグナリングの統合的理解

Publicly Offered Research

Project AreaIntracellular logistics: interdisciplinary approaches to pathophysiology of membrane traffic
Project/Area Number 23113709
Research Category

Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Allocation TypeSingle-year Grants
Review Section Biological Sciences
Research InstitutionTokyo Medical and Dental University

Principal Investigator

鍔田 武志  東京医科歯科大学, 難治疾患研究所, 教授 (80197756)

Project Period (FY) 2011-04-01 – 2013-03-31
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2012: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2011: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywordsエンドソーム / エンドサイトーシス / Bリンパ球 / 抗原受容体 / 活性酸素
Outline of Annual Research Achievements

B細胞表面のBCRは抗原などにより架橋されると速やかにエンドサイトーシスされ、エンドソーム/リソソームで抗原は分解される。前年度、エンドソーム/リソソームに局在するBCRがROS産生を介してB細胞の活性化に関わることを明らかにした。そこで、まず、BCR架橋に伴うエンドソームでのROS産生が実際にシグナル伝達に関わるかを明らかにするため、N-アセチルシステインなどでROS産生を阻害して種々のシグナル分子の活性化を解析したところ、ROS産生阻害によりシグナル分子の活性化が減弱することを観察した。その結果は、エンドソームのBCRがROS産生を介してシグナル伝達に関わることを示唆する。一方、ROS産生を阻害しても、BCRのエンドサイトーシスやエンドソーム/リソソームへの輸送は阻害されなかった。さらに、NADPH oxidase阻害剤でB細胞を処理するとエンドソームでのROS産生がおこらなくなったことから、BCR架橋によるROS産生にはNADPH oxidaseが関与することが明らかとなった。
また、B細胞株に蛍光タンパクとRab5, Rab7, Rab11などとの融合タンパクを発現させ、BCRを架橋した。エンドサイトーシスされた分子は通常Rab5陽性初期エンドソームからRab7陽性後期エンドソームまたはRab11陽性リサイクリングエンドソームへと輸送されるが、BCRはRab5,Rab7,Rab11のすべてが陽性の通常は見られないコンパートメントに局在した。また、BCRに局在するエンドソームではpHが比較的高いままで持続した。この結果は、BCR架橋によりBCRが特殊なエンドソームに輸送されることを示している。

Research Progress Status

24年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

24年度が最終年度であるため、記入しない。

Report

(2 results)
  • 2012 Annual Research Report
  • 2011 Annual Research Report
  • Research Products

    (26 results)

All 2013 2012 2011

All Journal Article (12 results) (of which Peer Reviewed: 12 results,  Open Access: 2 results,  Acknowledgement Compliant: 1 results) Presentation (14 results) (of which Invited: 8 results)

  • [Journal Article] Constitutively CD40-activated B cells regulate CD8 T cell inflammatory response by IL-10 induction.2013

    • Author(s)
      Shimoda, M., Bolduc, A., Takezaki, M., Ametani, Y., Huang, L., Nutt S. L., Kamanaka, M., Flavell, R. A., Mellor A. L, Tsubata, T. andKoni, P.
    • Journal Title

      J. Immunol.

      Volume: 190 Issue: 7 Pages: 3189-3196

    • DOI

      10.4049/jimmunol.1203364

    • Related Report
      2012 Annual Research Report 2011 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] ): Apoptotic volume decrease (AVD) is independent of mitochondrial dysfunction and initiator caspase activation.2013

    • Author(s)
      Maeno, E.,Tsubata, T. and Okada, Y
    • Journal Title

      Cells

      Volume: 1 Pages: 1156-1167

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] CD72c is a modifier gene that regulates Faslpr-induced autoimmune disease.2013

    • Author(s)
      Xu, M., Hou, R., Sato-Hayashizaki, A., Man, R., Zhu, C., Wakabayashi, C, Hirose, S., Adachi, T. and Tsubata, T.
    • Journal Title

      J. Immunol.

      Volume: 0 Pages: 0-0

    • Related Report
      2012 Annual Research Report 2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Apoptotic marginal zone deletion of anti-Sm/ribonucleoprotein B cells.2012

    • Author(s)
      Kishi, Y., Higuchi, T., Phoon, S., Kamiya, K., Riemekasten, G., Akiyoshi, K., Weigert, M. and Tsubata, T.
    • Journal Title

      Proc. Natl. Acad. Sci. USA

      Volume: 109 Issue: 20 Pages: 7811-7816

    • DOI

      10.1073/pnas.1204509109

    • Related Report
      2012 Annual Research Report 2011 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Role of inhibitory BCR co-receptors in immunity.2012

    • Author(s)
      Tsubata, T.
    • Journal Title

      Infect Disord Drug Targets

      Volume: 12 Pages: 181-190

    • Related Report
      2012 Annual Research Report 2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Human CD72 splicing isoform responsible for resistance to systemic lupus erythematosus regulates serum immunoglobulin level and is localized in endoplasmic resticulum.2012

    • Author(s)
      Hitomi, Y.,Adachi, T., Tsuchiya, N., Honda, Z.-I., Tokunaga, K and Tsubata, T.
    • Journal Title

      BMC Immunol.

      Volume: 13 Pages: 72-72

    • Related Report
      2012 Annual Research Report 2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Apoptotic volume decrease (AVD) is independent of mitochondrial dysfunction and initiator caspase activation.2012

    • Author(s)
      Maeno, E., Tsubata, T. and Okada, Y
    • Journal Title

      Cells

      Volume: 1 Pages: 1156-1167

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] CD22-Antagonists with nanomolar potency : The synergistic effect of hydrophobic groups at C-2 and C-9 of sialic acid scaffold2011

    • Author(s)
      Abdu-Allah, H.H.M., Watanabe, K., Completo, G.C., Sadagopan, M., Hayashizaki, K., Takaku, C., Tamanaka, T., Takematsu, H., Kozutsumi, Y., Paulson, J.C., Tsubata, T., Ando, H., Ishida, H., Kiso, M.
    • Journal Title

      Bioorg.Med.Chem

      Volume: 19 Issue: 6 Pages: 1966-1971

    • DOI

      10.1016/j.bmc.2011.01.060

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Cationic nanogels efficiently deliver proteins to myeloma cells and primary T lymphocytes poorly expressing heparan sulfate2011

    • Author(s)
      K.Watanabe, et al
    • Journal Title

      Biomaterials

      Volume: 32 Issue: 25 Pages: 5900-5905

    • DOI

      10.1016/j.biomaterials.2011.04.058

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Design and synthesis of multivalent heterobifunctional CD22-ligand as a potential immunomodulator.2011

    • Author(s)
      Abdu-Allah, H. H. M, Watanabe, K., Kanie, O., Tsubata, T. Ishida, H. and Kiso, M.
    • Journal Title

      Synthesis

      Volume: 18 Pages: 2968-2974

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Amplified B lymphocyte CD40 signaling drives regulatory B10 cell expansion in mice.2011

    • Author(s)
      Poe, J. C., Smith , S. H., Haas, K. M., Yanabe, K., Tsubata, T., Matsushita, T. and Tedder, T. F.
    • Journal Title

      PLoS ONE

      Volume: 6 Issue: 7 Pages: 22464-22464

    • DOI

      10.1371/journal.pone.0022464

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] High-affinity ligands of Siglec receptors and their therapeutic potentials.2011

    • Author(s)
      Magesh, S., Ando, H., Tsubata, T., Ishida, H. and Kiso, M.
    • Journal Title

      Current Medicinal Chemistry

      Volume: 18 Pages: 3537-3550

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Presentation] CD72C , a hapolotype encoding the SHP-1-binding B lymphocyte molecule, is a modifier gene for murine lupus.2013

    • Author(s)
      Tsubata, T.
    • Organizer
      the 10th International Conference on Protein Phosphatase
    • Place of Presentation
      Tokyo
    • Year and Date
      2013-02-07
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] 自己抗体産生とアイソタイプ2013

    • Author(s)
      鍔田武志
    • Organizer
      第20回自己抗体と自己免疫シンポジウム
    • Place of Presentation
      東京
    • Related Report
      2012 Annual Research Report 2011 Annual Research Report
    • Invited
  • [Presentation] CD72C , a hapolotype encoding the SHP-1-binding B lymphocyte molecule, is a modifier gene for murine lupus2013

    • Author(s)
      Tsubata, T.
    • Organizer
      the 10th International Conference on Protein Phosphatase
    • Place of Presentation
      Tokyo
    • Related Report
      2011 Annual Research Report
    • Invited
  • [Presentation] C型レクチン様分子CD72による硫酸糖鎖への免疫応答の制御2012

    • Author(s)
      鍔田武志
    • Organizer
      第85回日本生化学会大会
    • Place of Presentation
      福岡
    • Year and Date
      2012-12-14
    • Related Report
      2012 Annual Research Report 2011 Annual Research Report
    • Invited
  • [Presentation] Time, place and pathway-specific involvement of reactive oxygen species in B cell antigen receptor signaling.2012

    • Author(s)
      Tang, M., Takata, T., Tsubata, T.
    • Organizer
      日本免疫学会学術総会
    • Place of Presentation
      神戸
    • Year and Date
      2012-12-05
    • Related Report
      2012 Annual Research Report 2011 Annual Research Report
  • [Presentation] Excess CD40L specifically perturbs self-tolerance of anti-Sm antibody recognizing the same components as patient-derived antibodies.2012

    • Author(s)
      Kishi, Y., Phoon., S., Tsubata, T.
    • Organizer
      日本免疫学会学術総会
    • Place of Presentation
      神戸
    • Year and Date
      2012-12-05
    • Related Report
      2012 Annual Research Report 2011 Annual Research Report
  • [Presentation] Synthesis and biological evaluation of the mimics of cis ligand for CD222012

    • Author(s)
      Suganuma, Y., Matsubara, N., Iwayama, Y., Ueki, A., Imamura, A., Ando, H., Tsubata, T., Ishida, H. and Kiso, M.
    • Organizer
      The 4th Asian Communication for Glycobiology and Glycotechnology (ACGG)
    • Place of Presentation
      Jeju, Korea
    • Year and Date
      2012-10-28
    • Related Report
      2012 Annual Research Report 2011 Annual Research Report
  • [Presentation] シグレックと感染免疫2012

    • Author(s)
      鍔田武志
    • Organizer
      第5回感染病態研究フロンティア
    • Place of Presentation
      東京
    • Related Report
      2012 Annual Research Report 2011 Annual Research Report
    • Invited
  • [Presentation] 全身性自己免疫疾患と自己トレランス2012

    • Author(s)
      鍔田武志
    • Organizer
      第四回全国共同利用・共同研究「酵素学研究拠点」シンポジウム
    • Place of Presentation
      東京
    • Related Report
      2012 Annual Research Report 2011 Annual Research Report
    • Invited
  • [Presentation] チロシンフォスファターゼSHP-1を活性化するBリンパ球膜分子CD72の多型と自己免疫2012

    • Author(s)
      鍔田武志
    • Organizer
      第5回日本プロティンホスファターゼ研究会学術集会
    • Place of Presentation
      大阪
    • Related Report
      2011 Annual Research Report
    • Invited
  • [Presentation] 辺緑帯Bリンパ球のアポトーシスと自己免疫2011

    • Author(s)
      鍔田武志
    • Organizer
      第20回日本Cell Deth学会学術集会
    • Place of Presentation
      東京
    • Related Report
      2011 Annual Research Report
    • Invited
  • [Presentation] The C-type lectin-like domain containing B lymphocyte membrane molecule CD72 shows Ca2 +-independent lectin activity to sulfated glycans2011

    • Author(s)
      渡辺幸造、安達貴弘、鍔田武志
    • Organizer
      第40回日本免疫学会学術集会
    • Place of Presentation
      幕張
    • Related Report
      2011 Annual Research Report
  • [Presentation] Apoptotic marginal zone deletion of anti-Sm/RNP B cells is reversed by excess CD40L2011

    • Author(s)
      岸祐介、鍔田武志
    • Organizer
      第40回日本免疫学会学術集会
    • Place of Presentation
      幕張
    • Related Report
      2011 Annual Research Report
  • [Presentation] Role of Reactive Oxygen Species in B Cell Antigen Receptor Signaling2011

    • Author(s)
      Tang Miao、高田俊太朗、鍔田武志
    • Organizer
      第40回日本免疫学会学術集会
    • Place of Presentation
      幕張
    • Related Report
      2011 Annual Research Report

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Published: 2011-04-06   Modified: 2018-03-28  

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