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Elucidation of the molecular mechanism of T cell subcortical actin formation and its role in TCR signaling

Research Project

Project/Area Number 20K07287
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 48030:Pharmacology-related
Research InstitutionKyoto University

Principal Investigator

Thumkeo Dean  京都大学, 医学研究科, 特定准教授 (40372594)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
KeywordsT細胞 / アクチン / formin / 皮質下 / T細胞受容体シグナル
Outline of Research at the Start

本研究は3年間で遂行するプロジェクトとして計画している。具体的には、①超解像度顕微鏡によるイメージングで、平常状態のT細胞の皮質下アクチン繊維のナノスケール構築を明らかにする。②アクチン重合因子formin及びArp2/3の長期間阻害実験を行い、F-actinのNSTORM イメージングと組み合わせることにより、formin依存的皮質下アクチン繊維とArp2/3依存的皮質下アクチン繊維を同定し、その相違点を明らかにする。③TCRシグナルにおけるformin依存的皮質下のアクチン繊維とArp2/3依存的皮質下アクチン繊維の役割を明らかにし、それぞれの分子制御メカニズムを解明する。

Outline of Final Research Achievements

T cell-mediated immune responses are induced upon the recognition of non-self peptides presented by antigen-presenting cells through T cell receptors (TCR). It is known that T cells form a structure called immune synapse (IS) upon antigen stimulation. During this process, cytoskeleton actin undergoes large-scale reorganization. In this work, I have shown that the linear actin polymerizers, formin family proteins, promote TCR signaling through actin rearrangement in IS (Thumkeo et al., Science Advances, 2020). Moreover, in collaboration with the University of Colorado, we have further demonstrated that bioactive phospholipid LPA inhibited the localization and activation of the formin molecule mDia1 in antigen-stimulated T cells, resulting in abnormalities in the actin cytoskeleton structure. (Kremer, Buser, Thumkeo et al., PNAS 2022).Finally, we performed live imaging of F-actin using a super-resolution microscope and examined the effects of formins and Arp2/3 inhibitors.

Academic Significance and Societal Importance of the Research Achievements

本研究はCD8 T細胞のTCRシグナル伝達にformin familyアクチン重合因子mDiaが重要であることを見出した。さらに、生理活性リン脂質LPAが抗原刺激依存的なmDiaの活性化と局在を阻害することを明らかにした。また、forminに加えて、Arp2/3 family重合因子も不可欠であるという所見を見出しており、これらの知見を統合させることにより、さらにTCRシグナル伝達の理解を深めることができると考えている。これまで、TCRシグナル伝達に関わる分子は免疫抑制剤など自己免疫疾患などの薬物の標的になっており、今後本研究で得られた知見の臨床応用が期待される。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (21 results)

All 2022 2021 2020 Other

All Int'l Joint Research (3 results) Journal Article (8 results) (of which Int'l Joint Research: 8 results,  Peer Reviewed: 8 results,  Open Access: 5 results) Presentation (9 results) (of which Int'l Joint Research: 2 results) Remarks (1 results)

  • [Int'l Joint Research] コロラド大学(米国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] マヒドン大学(タイ)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] コロラド大学(米国)

    • Related Report
      2021 Research-status Report
  • [Journal Article] An optimized protocol to identify keratinocyte subpopulations in vitro by single-cell RNA sequencing analysis.2022

    • Author(s)
      Siriwach R, Ngo AQ, Narumiya S, Thumkeo D.
    • Journal Title

      STAR Protoc.

      Volume: 3(4) Issue: 4 Pages: 101906-101906

    • DOI

      10.1016/j.xpro.2022.101906

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] PGE2-EP2/EP4 signaling elicits immunosuppression by driving the mregDC-Treg axis in inflammatory tumor microenvironment.2022

    • Author(s)
      Thumkeo D, Punyawatthananukool S, Prasongtanakij S, Matsuura R, Arima K, Nie H, Yamamoto R, Aoyama N, Hamaguchi H, Sugahara S, Takeda S, Charoensawan V, Tanaka A, Sakaguchi S, Narumiya S.
    • Journal Title

      Cell Reports

      Volume: 39(10) Issue: 10 Pages: 110914-110914

    • DOI

      10.1016/j.celrep.2022.110914

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] LPA suppresses T cell function by altering the cytoskeleton and disrupting immune synapse formation2022

    • Author(s)
      Kremer Kimberly N.、Buser Alan、Thumkeo Dean、Narumiya Shuh、Jacobelli Jordan、Pelanda Roberta、Torres Raul M.
    • Journal Title

      Proceedings of the National Academy of Sciences

      Volume: 119 Issue: 15

    • DOI

      10.1073/pnas.2118816119

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Single-cell RNA sequencing identifies a migratory keratinocyte subpopulation expressing THBS1 in epidermal wound healing2022

    • Author(s)
      Siriwach Ratklao、Ngo Anh Quynh、Higuchi Makio、Arima Kentaro、Sakamoto Satoko、Watanabe Akira、Narumiya Shuh、Thumkeo Dean
    • Journal Title

      iScience

      Volume: 25 Issue: 4 Pages: 104130-104130

    • DOI

      10.1016/j.isci.2022.104130

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] DIAPH1 mutations in sporadic moyamoya disease implicate impaired vascular cell actin remodeling in disease pathogenesis.2021

    • Author(s)
      Kundishora AJ, Peters S, Pinard A, Duran D, Panchagnula S, Barak T, Miyagishima DF, Dong W, Dunbar A, Smith H, Ocken J, Nelson-Williams C, Haider S, Walker RL, Li B, Zhao H, Thumkeo D,その他29名
    • Journal Title

      JAMA Neurology

      Volume: 未定

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Opening the door to better aspirin2021

    • Author(s)
      Thumkeo D, Narumiya S
    • Journal Title

      Structure

      Volume: 29 Issue: 3 Pages: 200-202

    • DOI

      10.1016/j.str.2021.02.003

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Disruption of actin dynamics regulated by Rho effector mDia1 attenuates pressure overload-induced cardiac hypertrophic responses and exacerbates dysfunction2020

    • Author(s)
      Abe Ichitaro、Terabayashi Takeshi、Hanada Katsuhiro、Kondo Hidekazu、Teshima Yasushi、Ishii Yumi、Miyoshi Miho、Kira Shintaro、Saito Shotaro、Tsuchimochi Hirotsugu、Shirai Mikiyasu、Yufu Kunio、Arakane Motoki、Daa Tsutomu、Thumkeo Dean、Narumiya Shuh、Takahashi Naohiko、Ishizaki Toshimasa
    • Journal Title

      Cardiovascular Research

      Volume: 117 Issue: 4 Pages: 1103-1117

    • DOI

      10.1093/cvr/cvaa206

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] DAAM2 variants cause nephrotic syndrome via actin dysregulation2020

    • Author(s)
      Schneider R, Deutsch K, Hoeprich GJ, Marquez J, Hermle T, Braun DA, Seltzsam S, Kitzler TM, Mao Y, Buerger F, Majmundar AJ, Onuchic-Whitford AC, Kolvenbach CM, Schierbaum L, Schneider S, Halawi AA, Nakayama M, Mann N, Connaughton DM, Klambt V, Wagner M, Riedhammer KM, Renders L, Katsura Y, Thumkeo D, その他8名
    • Journal Title

      American Journal of Human Genetics

      Volume: 107 Issue: 6 Pages: 1113-1128

    • DOI

      10.1016/j.ajhg.2020.11.008

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Open up the next generation pharmacology with scRNA-seq technology ~elucidation of the role of PGE2-EP2/4 pathway in cancer immunity as an example~2022

    • Author(s)
      Dean Thumkeo
    • Organizer
      The 24th Japan-Korea Joint Seminar on Pharmacology, Yokohama, Japan (Symposium)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Inhibition of PGE2-EP2/EP4 signaling elicits anti-tumor immunity through the suppression of mregDC-Treg axis in inflammatory tumor microenvironment2022

    • Author(s)
      Dean Thumkeo, Siwakorn Punyawatthananukool, Shuh Narumiya
    • Organizer
      第96回日本薬理学会年会, 横浜、 シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] Activation of regulatory T cells through PGE2-EP4 signaling2022

    • Author(s)
      Ryuma Matsuura, Dean Thumkeo, Shuh Narumiya
    • Organizer
      第96回日本薬理学会年会, 横浜、 口頭発表
    • Related Report
      2022 Annual Research Report
  • [Presentation] Elucidation of the role of PGE2-EP2/4 pathway in cancer immunity utilizing scRNA-seq technology2022

    • Author(s)
      Dean Thumkeo, Siwakorn Punyawatthananukool, Varodom Charoensawan, Shuh Narumiya
    • Organizer
      The Human Cell Atlas 2022 Asia meeting, Bangkok, Thailand, Symposium
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 制御性T細胞に対するプロスタグランジンE2 の作用および分子制御機構の解明2021

    • Author(s)
      松浦 竜真、Thumkeo Dean、成宮 周
    • Organizer
      第140回日本薬理学会近畿部会
    • Related Report
      2021 Research-status Report
  • [Presentation] PGE2-EP2/EP4 signaling mediates immunosuppression in tumor microenvironment through the facilitation of mregDC-Treg axis2021

    • Author(s)
      Thumkeo Dean, 成宮 周
    • Organizer
      第50回日本免疫学会総会
    • Related Report
      2021 Research-status Report
  • [Presentation] Single cell RNA sequencing identifies a novel LPA-induced THBS1-positive keratinocyte subpopulation that is involved in wound healing2020

    • Author(s)
      Anh Quynh Ngo, Ratklao Siriwach, Dean Thumkeo, Shuh Narumiya
    • Organizer
      第138回日本薬理学会近畿支部会
    • Related Report
      2020 Research-status Report
  • [Presentation] New compounds for atopic dermatitis promote selective AHR-induced Filaggrin transcription in NHEK cells2020

    • Author(s)
      Makio Higuchi, Dean Thumkeo, Shuh Narumiya
    • Organizer
      第137回日本薬理学会近畿支部会
    • Related Report
      2020 Research-status Report
  • [Presentation] Molecular mechanism of the formin proteins, mDia1/3, in TCR signaling2020

    • Author(s)
      Dean Thumkeo
    • Organizer
      第72回日本細胞生物学会
    • Related Report
      2020 Research-status Report
  • [Remarks] 京都大学創薬医学講座メンバー

    • URL

      http://www.mic.med.kyoto-u.ac.jp/dddm/members/thumkeo.html

    • Related Report
      2022 Annual Research Report

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Published: 2020-04-28   Modified: 2024-01-30  

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