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Possible roles of immune cells and sensory nerve communication in atopic dermatitis

Research Project

Project/Area Number 17H07096
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Dermatology
Research InstitutionJuntendo University

Principal Investigator

Toyama Sumika  順天堂大学, 医学(系)研究科(研究院), 博士研究員 (50805893)

Project Period (FY) 2017-08-25 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsアトピー性皮膚炎 / 難治性痒み / 好酸球 / 神経線維 / 免疫細胞 / Th2 / 知覚神経 / ILC2 / 痒み / かゆみ / アレルギー / 自然リンパ球
Outline of Final Research Achievements

In this study, we investigated that interaction between immune cells and sensory nerves, and to find new therapy targets for itch in atopic dermatitis (AD). As a result, B cells and regulatory T cells (Treg) number was decreased in NC/Nga mouse, an AD model. In addition, eosinophils migrated to lesional skin of AD model mice and patients. Moreover, eosinophils contacted to sensory nerves at eosinophils co-culture with sensory nerves. Therefore, this finding suggest that eosinophils may be new target for itch in AD.

Academic Significance and Societal Importance of the Research Achievements

かゆみは『掻破したいという欲望を起こさせる不快な感覚』として定義されており、近年では外部異物に対する自己防衛反応や全身の異常を知らせる警告(アラーム)として考えられている。知覚異常としてのかゆみは、痛みと同様にQOL(qualityoflife)を著しく低下させる。特に、既存治療が無効な難治性のかゆみは不眠、自殺率(願望)の増加、労働・勉学障害等の一因となっており、世界中で難治性かゆみの新規治療法の開発が進められている。
本研究成果により、ADにおける好酸球の新規制御法の開発及び好酸球を標的とした新規痒み治療法の開発に繋がると考えられ、大変意義がある。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • Research Products

    (11 results)

All 2019 2018 2017

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 5 results) Presentation (6 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Liver transplantation: New treatment for mucopolysaccharidosis type VI in rats.2019

    • Author(s)
      Toyama S, Migita O, Fujino M, Kunieda T, Kosuga M, Fukuhara Y, Nagahara Y, Li XK, Okuyama T.
    • Journal Title

      Pediatr Int

      Volume: 261 Issue: 2 Pages: 180-189

    • DOI

      10.1111/ped.13751

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Chitin promotes antigen-specific Th2 cell-mediated murine asthma through induction of IL-33-mediated IL-1β production by DCs2018

    • Author(s)
      Arae Ken、Morita Hideaki、Unno Hirotoshi、Motomura Kenichiro、Toyama Sumika、Okada Naoko、Ohno Tatsukuni、Tamari Masato、Orimo Keisuke、Mishima Yuko、Suto Hajime、Okumura Ko、Sudo Katsuko、Miyazawa Hiroshi、Taguchi Haruhiko、Saito Hirohisa、Matsumoto Kenji、Nakae Susumu
    • Journal Title

      Scientific Reports

      Volume: 8 Issue: 1 Pages: 11721-11721

    • DOI

      10.1038/s41598-018-30259-2

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] IL-33 induces functional CCR7 expression in human mast cells.2018

    • Author(s)
      Emi-Sugie M, Toyama S, Matsuda A, Saito H, Matsumoto K.
    • Journal Title

      J Allergy Clin Immunol.

      Volume: 142(4) Issue: 4 Pages: 1341-1344

    • DOI

      10.1016/j.jaci.2018.06.007

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] IL-33 induces functional CCR7 expression in human mast cells.2018

    • Author(s)
      1.Emi-Sugie, M., Toyama, S. Matsuda, A. Saito, H. and Matsumoto, K.
    • Journal Title

      J Allergy Clin Immunol.

      Volume: -

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Human eosinophils constitutively express a unique serine protease, PRSS33.2017

    • Author(s)
      1.Toyama, S., Okada, N., Matsuda, A., Morita, H., Saito, H., Fujisawa, T., Nakae, S., Karasuyama, H., and Matsumoto, K.
    • Journal Title

      Allergol Int.

      Volume: 66 Pages: 463-471

    • NAID

      130005858869

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Possible role for CD26/DPPIV in regulating mechanical itch (Alloknesis).2019

    • Author(s)
      Eriko Komiya-Suyama, Ryo Hatano, Takumi Itoh, Haruna Otsuka, Yayoi Kamata, Kotaro Honda, Sumika Toyama, Catharina Sagita Moniaga, Kei Ohnuma, Mitsutoshi Tominaga, Chikao Morimoto, Kenji Takamori.
    • Organizer
      28th EADV Congress.
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Elucidation of the signaling pathway involved in Sema3A gene expression in normal human epidermal keratinocytes.2019

    • Author(s)
      Yayoi kamata, Mitsutoshi Tominaga, Yoshie Umehara, Kotaro Honda, Atsuko Kamo, Sumika Toyama, Yasushi Suga, Kenji Takamori.
    • Organizer
      28th EADV Congress.
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Possible roles of eosinophil-sensory nerve communication in atopic dermatitis.2019

    • Author(s)
      Sumika Toyama, Reiko Sato-Fukami, Hideoki Ogawa, Yasushi Suga, Mitsutoshi Tominaga, Kenji Takamori.
    • Organizer
      118回 日本皮膚科学会総会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 加齢皮膚におけるアロネーシスの発症メカニズムの解明と治療法の開発2019

    • Author(s)
      冨永光俊、古宮栄利子、本田耕太郎、外山扇雅、鎌田弥生、髙森建二
    • Organizer
      第15回加齢皮膚医学研究会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 加齢皮膚で誘発される機械的かゆみ調節機構の解明2019

    • Author(s)
      古宮栄利子、冨永光俊、波多野良、伊藤匠、大塚春奈、本田耕太郎、外山扇雅、鎌田弥生、大沼圭、森本幾夫、髙森建二
    • Organizer
      第15回加齢皮膚医学研究会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Regulatory T cells modulate skin inflammation in atopic dermatitis model mouse.2017

    • Author(s)
      1.Sumika Toyama, Hironori Matsuda, Ryohei Kosaka, Hideoki Ogawa, Mitsutoshi Tominaga, Kenji Takamori.
    • Organizer
      The 42nd Annual meeting of the Japanese Society for Investigative Dermatology.
    • Related Report
      2017 Annual Research Report

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Published: 2017-08-25   Modified: 2020-03-30  

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