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

2019 Fiscal Year Annual Research Report

免疫細胞のクロストークによる抑制性免疫応答制御機構の解明

Research Project

Project/Area Number 17H04376
Research InstitutionTokyo Medical and Dental University

Principal Investigator

永井 重徳  東京医科歯科大学, 大学院医歯学総合研究科, 准教授 (50348801)

Project Period (FY) 2017-04-01 – 2020-03-31
Keywords免疫学
Outline of Annual Research Achievements

粘膜組織における微生物感染において、正の免疫応答に続いて起こる負の免疫応答(免疫抑制)が、適切な時期・強さで起こることが、免疫学的ホメオスタシスを保つために極めて重要であり、この免疫抑制がうまく作用しない時に、慢性炎症や過剰な免疫抑制による二次感染が起こると考えられる。この現象は免疫麻痺と呼ばれ、特に臨床において入院患者が二次的に院内感染した際には、場合によっては死に至るなど大きな問題となっている。そこで本研究では、正の免疫応答に続く免疫抑制機構について、各免疫細胞同士の相互作用に留意しながら、時空間的に明らかにする。また、これら制御機構における免疫チェックポイント分子の役割を示すことにより、in vivoにおいてエフェクター機能をいかに適切に制御できるかを目的とする。
本年度は、ザイモザン投与によるモデルマウスを用いてGr1陽性CD11b陽性細胞における解析を行った。この細胞は1週間後までは増加がみられるが、その後減少し3週間後までには対照群と差がなくなった。しかし、その後のエンドトキシン投与による炎症性サイトカイン産生が、モデルマウスにおいて抑制されることを見出した。そこでこのモデルマウスのGr1陽性CD11b陽性細胞を単離して、ナイーブマウスに移入してからエンドトキシンを投与しても、同様に炎症性サイトカイン産生が抑えられたことから、この細胞がエンドトキシンによる免疫応答に対する抑制を引き起こす可能性が示された。

Research Progress Status

令和元年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和元年度が最終年度であるため、記入しない。

  • Research Products

    (21 results)

All 2020 2019 Other

All Journal Article (9 results) (of which Peer Reviewed: 9 results) Presentation (9 results) (of which Int'l Joint Research: 6 results) Book (1 results) Remarks (2 results)

  • [Journal Article] Orthotopic tongue squamous cell carcinoma (SCC) model exhibiting a different tumor-infiltrating T-cell status with margin-restricted CD8+ T cells and regulatory T cell-dominance, compared to skin SCC.2020

    • Author(s)
      Kashima Y, Nishii N, Tachinami H, Furusawa E, Nagai S, Harada H, *Azuma M.
    • Journal Title

      Biochem Biophy Res Commun.

      Volume: 印刷中 Pages: x-x

    • DOI

      10.1016/j.bbrc.2020.03.022.

    • Peer Reviewed
  • [Journal Article] Tolerogenic properties of CD206+ macrophages appeared in the sublingual mucosa after repeated antigen-painting.2020

    • Author(s)
      Yang Y, *Nagai S, Kang S, Xia Y, Kawano Y, Miyake K, Karasuyama H, Azuma M.
    • Journal Title

      Int Immunol.

      Volume: 印刷中 Pages: x-x

    • DOI

      10.1093/intimm/dxaa014.

    • Peer Reviewed
  • [Journal Article] Hypoxia-inducible factor 1a promotes interleukin 1b and tumor necrosis factor a expression in lipopolysaccharide-stimulated human dental pulp cells.2020

    • Author(s)
      Fujii M, *Kawashima N, Tazawa K, Hashimoto K, Nara K, Noda S, Nagai S, Okiji T.
    • Journal Title

      Int Endod J.

      Volume: 53 Pages: 636-646

    • DOI

      10.1111/iej.13264.

    • Peer Reviewed
  • [Journal Article] Fabrications of boron-containing apatite ceramics via ultrasonic spray-pyrolysis route and their responses to immunocytes.2020

    • Author(s)
      Nakagawa D, Nakamura M, Nagai S, *Aizawa M.
    • Journal Title

      J Mater Sci Mater Med.

      Volume: 31 Pages: 20-20

    • DOI

      10.1007/s10856-020-6358-z

    • Peer Reviewed
  • [Journal Article] HIF1<alpha> inhibits LPS-mediated induction of IL-6 synthesis via SOCS3-dependent CEBP<beta> suppression in human dental pulp cells.2020

    • Author(s)
      Fujii M, *Kawashima N, Tazawa K, Hashimoto K, Nara K, Orikasa S, Noda S, Kuramoto M, Nagai S, Okiji T.
    • Journal Title

      Biochem Biophy Res Commun.

      Volume: 522 Pages: 308-314

    • DOI

      10.1016/j.bbrc.2019.11.032.

    • Peer Reviewed
  • [Journal Article] Endogenous IL-33 exerts CD8+ T cell antitumor responses overcoming pro-tumor effects by regulatory T cells in a colon carcinoma model.2019

    • Author(s)
      Xia Y, Ohno T, Nishii N, Bhingare A, Tachinami H, Kashima Y, Nagai S, Saito H, Nakae S, *Azuma M.
    • Journal Title

      Biochem Biophys Res Commun.

      Volume: 518 Pages: 331-336

    • DOI

      10.1016/j.bbrc.2019.08.058.

    • Peer Reviewed
  • [Journal Article] Silencing of PD-L2/B7-DC by Topical Application of Small Interfering RNA inhibits Elicitation of Contact Hypersensitivity.2019

    • Author(s)
      Furusawa E, Ohno T, Nagai S, Noda T, Komiyama T, Kobayashi K, Hamamoto H, Miyashin M, Yokozeki H, *Azuma M.
    • Journal Title

      J Invest Dermatol.

      Volume: 139 Pages: 2164-2173

    • DOI

      10.1016/j.jid.2019.02.037.

    • Peer Reviewed
  • [Journal Article] Responses of Immune Cells to Hydroxyapatite Ceramics Loaded with Immunostimulators.2019

    • Author(s)
      Kagami S, Kizukuri R, Nagai S, *Aizawa M.
    • Journal Title

      J Soc Inorg Mater Jpn.

      Volume: 26 Pages: 74-81

    • Peer Reviewed
  • [Journal Article] Differences in tumor-recruiting myeloid cells in murine squamous cell carcinoma influence the efficacy of immunotherapy combined with a TLR7 agonist and PD-L1 blockade.2019

    • Author(s)
      Tachinami H, Nishii N, Xia Y, Kashima Y, Ohno T, Nagai S, Li L, Lau W, Tomihara K, Noguchi M, *Azuma M.
    • Journal Title

      Oral Oncol.

      Volume: 91 Pages: 21-28

    • DOI

      doi.org/10.1016/j.oraloncology.2019.02.014.

    • Peer Reviewed
  • [Presentation] Identification of a unique macrophage subset induced by repeated antigen painting in sublingual mucosa to regulate T cell tolerance.2019

    • Author(s)
      Yue Yang, Shigenori Nagai, Miyuki Azuma
    • Organizer
      第47回日本免疫学会総会・学術集会
  • [Presentation] One of PD-1 ligand, PD-L2 induced on Langerhans cells augments cutaneous T cell-mediated immune responses.2019

    • Author(s)
      Emi Furusawa, Tatsukuni Ohno, Shigenori Nagai, Takuya Komiyama, Katsunori Kobayashi, Hidetoshi Hamamoto, Michiyo Miyashin, Hiroo Yokozeki, Miyuki Azuma.
    • Organizer
      第47回日本免疫学会総会・学術集会
  • [Presentation] PI3K-Akt pathway enhances the differentiation of interleukin 27-induced type 1 regulatory T cells.2019

    • Author(s)
      Nagai S, Adiba-Nadya N, Tezuka H, Ohteki T, Matsuda S, Azuma M.
    • Organizer
      17th International Congress of Immunology.
    • Int'l Joint Research
  • [Presentation] Repeated antigen painting induces tolerogenic cells in sublingual mucosa.2019

    • Author(s)
      Yang Y, Nagai S, Azuma M.
    • Organizer
      17th International Congress of Immunology.
    • Int'l Joint Research
  • [Presentation] Differences of tumor-recruiting myeloid cells in murine squamous cell carcinoma influence the efficacy of immunotherapy combined with a TLR7 agonist and PD-L1 blockade.2019

    • Author(s)
      Azuma M, Tachinami H, Nishii N, Xia Y, Kashima Y, Nagai S, Li L, Tomihara K, Noguchi M.
    • Organizer
      17th International Congress of Immunology.
    • Int'l Joint Research
  • [Presentation] Silencing of PD-L2 by topical application of small interfering RNA inhibits elicitation of contact hypersensitivity.2019

    • Author(s)
      Azuma M, Furusawa E, Nagai S, Yokozeki H.
    • Organizer
      17th International Congress of Immunology.
    • Int'l Joint Research
  • [Presentation] Fabrication of boron-containing apatite ceramics by reaction sintering process and their cellular responses to immunocytes.2019

    • Author(s)
      Daiki Nakagawa, Sanae Kagami, Shigenori Nagai, and Mamoru Aizawa.
    • Organizer
      The 19th Asian BioCeramics Symposium (ABC2019).
    • Int'l Joint Research
  • [Presentation] 反応焼結法により作製したホウ素含有アパタイトセラミックスと免疫細胞との相互作用.2019

    • Author(s)
      中川 大輝,加々見 早苗,永井 重徳,相澤 守.
    • Organizer
      第41回日本バイオマテリアル学会大会.
  • [Presentation] Fabrication of boron-containing apatite ceramics with well-controlled chemical composition by reaction sintering method and their cellular response to immunocytes.2019

    • Author(s)
      Daiki Nakagawa, Sanae Kagami, Shigenori Nagai, and Mamoru Aizawa.
    • Organizer
      The 13th Pacific Rim Conference of Ceramic Societies (PACRIM13).
    • Int'l Joint Research
  • [Book] Co-signal Molecules in T cell Activation2019

    • Author(s)
      Nagai S, Azuma M
    • Total Pages
      326
    • Publisher
      Springer
    • ISBN
      978-981-32-9716-6
  • [Remarks] 東京医科歯科大学分子免疫学分野ホームページ

    • URL

      http://www.tmd.ac.jp/mim/

  • [Remarks] プレスリリース「舌下粘膜に現れるCD206陽性マクロファージは、舌下免疫療法の免疫抑制に関わる」

    • URL

      http://www.tmd.ac.jp/archive-tmdu/kouhou/20200402_1.pdf

URL: 

Published: 2021-01-27  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi