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Analysis of two homologous proteins Ly6C1 and Ly6C2 on immune homeostasis

Research Project

Project/Area Number 19K07626
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 49070:Immunology-related
Research InstitutionThe University of Tokushima

Principal Investigator

MORIMOTO Junko  徳島大学, 先端酵素学研究所, 助教 (20451396)

Co-Investigator(Kenkyū-buntansha) 松本 満  徳島大学, 先端酵素学研究所(次世代), 教授 (60221595)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
KeywordsGPIアンカータンパク質 / Ly6C / 単球 / 大腸炎 / T細胞応答 / 大腸炎モデル / 胸腺髄質上皮細胞 / 顆粒球 / GPIアンカー型タンパク質 / 免疫応答
Outline of Research at the Start

Ly6Cは主に血球細胞上でその発現が認められ、CD8+T細胞においてはそのホーミングに関与しているのではないかと考えられている。これまでLy6Cの機能はin vitroで抗体を用いてcross-linkingすることにより解析が行われていたが、この場合誘導されるシグナルが活性化なのか抑制化なのかは不明であった。我々はLy6C機能を明らかにするために、Ly6C欠損マウス(6C1/6C2両欠損、6C1欠損)を作製した。本研究ではこれらの遺伝子改変マウスを駆使することで、不明であったLy6C分子による免疫応答調節機構を解明し、自己免疫疾患を含む種々の炎症性疾患の治療標的分子としての可能性を探る。

Outline of Final Research Achievements

Ly6C comprises two homologous components of Ly6C1 and Ly6C2. Their expressions are detectable on several immune cells, such as monocyte, macrophage, granulocyte and lymphocyte. Because the role of Ly6C has not been well understood, we generated the mice deficient for both Ly6C1 and Ly6C2 with CRISPR-Cas9-mediated deletion (Ly6C1/6C2-KO). Moreover, we also generated mice deficient Ly6C1 alone (Ly6C1-KO). Ly6C1/6C2-KO mice showed major alterations in the subsets and function of monocytes and other immune cells.

Academic Significance and Societal Importance of the Research Achievements

Ly6C分子の機能は現時点でも多くが不明である。Ly6Cは免疫系の細胞においてその発現が認められるが、生体内での機能はほとんど明らかにはされていなかった。本研究ではLy6C欠損マウスを初めて作製し、Ly6Cの生体内での機能を明らかにすることで、免疫応答にLy6Cがどのような役割を担っているのかを明らかにすることを試みた。本研究ではLy6Cの欠損は定常状態での免疫細胞の分布や大腸炎の病態形成に影響を与えないことが示された。今後は他の炎症性疾患やウイルス感染におけるLy6Cの機能を解析することで、Ly6Cが炎症性疾患において新たな標的分子となるかどうかを検討したい。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (20 results)

All 2022 2021 2020 2019 Other

All Int'l Joint Research (1 results) Journal Article (6 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 6 results,  Open Access: 6 results) Presentation (11 results) (of which Int'l Joint Research: 1 results) Book (2 results)

  • [Int'l Joint Research] Universidade do Porto(ポルトガル)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Development of organ-specific autoimmunity by dysregulated Aire expression2022

    • Author(s)
      Nishijima H, Sugita M, Umezawa N, Kimura N, Sasaki H, Kawano H, Nishioka Y, Matsumoto M, Oya T, Tsuneyama K, Morimoto J, Matsumoto M.
    • Journal Title

      Immunology & Cell Biology

      Volume: - Issue: 5 Pages: 1-7

    • DOI

      10.1111/imcb.12546

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] No major impact of two homologous Ly6C1 and Ly6C2 on immune homeostasis2022

    • Author(s)
      Morimoto J, Matsumoto M, Miyazawa R, Oya T, Taneyama K, Matsumoto M.
    • Journal Title

      Immunohorizons

      Volume: 9 Issue: 3 Pages: 202-210

    • DOI

      10.4049/immunohorizons.2100114

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Aire suppresses CTLA-4 expression from the thymic storm to control autoimmunity2022

    • Author(s)
      Morimoto J, Matsumoto M, Miyazawa R, Yoshida H, Tsuneyama K, Matsumoto M.
    • Journal Title

      Cell Reports

      Volume: 15 Issue: 7 Pages: 110384-110384

    • DOI

      10.1016/j.celrep.2022.110384

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Aire controls heterogeneity of medullary thymic epithelial cells for the expression of self-antigens2022

    • Author(s)
      Nishijima H, Matsumoto M, Morimoto J, Hosomichi K, Akiyama N, Akiyama T, Oya T, Tsuneyama K, Yoshida H, Matsumoto M.
    • Journal Title

      The Journal of Immunology

      Volume: 15 Issue: 2 Pages: 303-320

    • DOI

      10.4049/jimmunol.2100692

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A novel method to identify Post-Aire stages of medullary thymic epithelial cell differentiation2021

    • Author(s)
      Ferreirinha P, Ribeiro C, Morimoto J, Landry JJM, Matsumoto M, Meireles C, White AJ, Ohigashi I, Araujo L, Benes V, Takahama Y, Anderson G, Matsumoto M, Alves N
    • Journal Title

      European Journal of Immunology

      Volume: 51 Issue: 2 Pages: 311-318

    • DOI

      10.1002/eji.202048764

    • NAID

      120007153322

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Tissue-specific autoimmunity controlled by Aire in thymic and peripheral tolerance mechanisms2019

    • Author(s)
      Matsumoto Minoru、Tsuneyama Koichi、Morimoto Junko、Hosomichi Kazuyoshi、Matsumoto Mitsuru、Nishijima Hitoshi
    • Journal Title

      International Immunology

      Volume: 32 Issue: 2 Pages: 117-131

    • DOI

      10.1093/intimm/dxz066

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 胸腺内Treg誘導における胸腺髄質上皮細胞と樹状細胞の機能的差異2022

    • Author(s)
      森本 純子、松本 満
    • Organizer
      第41回日本胸腺研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Aire欠損mTECは異所性CTLA-4を発現することによって胸腺内DCの機能に影響を及ぼす2021

    • Author(s)
      森本 純子、松本 穣、松本 満
    • Organizer
      第30回 Kyoto T Cell Conference
    • Related Report
      2021 Annual Research Report
  • [Presentation] Aire suppresses CTLA-4 expression from medullary thymic epithelial cells to avoid autoimmunity2021

    • Author(s)
      Morimoto J, Matsumoto M, Miyazawa R, Yoshida H, Matsumoto M
    • Organizer
      第50回日本免疫学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Aire controls heterogeneity of medullary thymic epithelial cells for the expression of self-antigens2021

    • Author(s)
      Matsumoto M, Nishijima H, Morimoto J, Akiyama N, Akiyama T, Tsuneyama K, Yoshida H, Matsumoto M
    • Organizer
      第50回日本免疫学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Functional analysis of Aire-expressing dendritic cells2021

    • Author(s)
      Miyazawa R, Matsumoto M, Morimoto J, Yoshida H, Matsumoto M
    • Organizer
      第50回日本免疫学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 胸腺髄質上皮細胞からDCへの抗原転移におけるAireの役割2021

    • Author(s)
      森本 純子、松本 満
    • Organizer
      第40回日本胸腺研究会
    • Related Report
      2020 Research-status Report
  • [Presentation] Tissue-specific autoimmunity controlled by Aire, a gene response for APECED2021

    • Author(s)
      Matsumoto M, Nishijima H, Morimoto J, Tsuneyama K, Matsumoto M
    • Organizer
      The Virtual World Conference on Rare Disease
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Antigen Transfer from thymic epithelial cells to DCs contributes to the production of thymic Tregs2019

    • Author(s)
      Morimoto J, Hitoshi Nishijima, Minoru Matsumoto, Mitsuru Matsumoto
    • Organizer
      第48回日本免疫学会
    • Related Report
      2019 Research-status Report
  • [Presentation] Characterization of Aire-expressing DCs with a high-sensitivity and high-fidelity Aire-reporter strain.2019

    • Author(s)
      Matsumoto M, Nishijima H, Morimoto J, Tsuneyama K, Matsumoto M
    • Organizer
      第48回日本免疫学会
    • Related Report
      2019 Research-status Report
  • [Presentation] Aireを発現する胸腺髄質上皮細胞の免疫学的機能とトランスクリプトーム解析2019

    • Author(s)
      西嶋仁、杉田瑞季、森本純子、松本穣、松本満
    • Organizer
      第42回日本分子生物学会
    • Related Report
      2019 Research-status Report
  • [Presentation] Treg誘導に関与する胸腺内樹状細胞サブセットとAireの機能解析2019

    • Author(s)
      森本純子、西嶋仁、松本穣、松本満
    • Organizer
      第2回若手の会(新学術領域ネオセルフの生成・機能・構造)
    • Related Report
      2019 Research-status Report
  • [Book] 別冊Bio Clinica 慢性炎症と疾患2020

    • Author(s)
      森本 純子、宮澤 龍一郎、松本 穰、松本 満
    • Total Pages
      6
    • Publisher
      北隆館
    • Related Report
      2020 Research-status Report
  • [Book] Precision Medicine 橋渡し研究の推進2020

    • Author(s)
      森本 純子、宮澤 龍一郎、松本 穰、松本 満
    • Total Pages
      6
    • Publisher
      北隆館
    • Related Report
      2020 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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