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Investigation of lymphoid follicle structures in the skin as ectopic lymphoid tissues, iSALT

Research Project

Project/Area Number 21K16227
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 53050:Dermatology-related
Research InstitutionKyoto University

Principal Investigator

KOGAME TOSHIAKi  京都大学, 医学研究科, 特定講師 (00744111)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2022: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2021: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywords三次リンパ組織 / B細胞 / 皮膚免疫 / MALT / iSALT / 三次リンパ濾胞構造 / 皮膚局所免疫 / 三次リンパ濾胞 / 三次リンパ濾胞様構造 / 局所免疫 / 皮膚
Outline of Research at the Start

皮膚におけるリンパ濾胞が免疫学的機能をもつ可能性を検討する。
腸など粘膜組織では局所免疫に関わる三次リンパ組織が知られているが、我々は皮膚のリンパ濾胞構造が皮膚における三次リンパ組織と考えinducible skin-associated lymphoid tissue(iSALT)と名付けた。
リンパ濾胞構造を持つ皮膚疾患サンプルを1細胞RNAシークエンス解析し、iSALTの構成細胞を網羅的に明らかにする。

Outline of Final Research Achievements

we analyzed skin diseases of single-cell RNA sequencing (scRNA-seq) data including public data repository which include significant B cell infiltration. We identified B cells expressing factors specific to intestinal B cells, such as J-chain and MZB1. Furthermore, screening with immunostaining in skin diseases with lymphoid follicular hyperplasia, inflammatory skin diseases, and skin tumor samples revealed these B cells within lymphoid follicles, including reactive lymphoid follicles near tumors. Additionally, we observed the infiltration of MZB1-positive cells in diseases without lymphoid follicles, such as atopic dermatitis and alopecia areata. We will investigate the physiological significance of these cells in future studies.

Academic Significance and Societal Importance of the Research Achievements

これまで、その浸潤数の少なさから皮膚疾患におけるB細胞の意義はあまり研究されてこなかった。今回、皮膚に腸型のB細胞の同定に成功し、更にそれが複数の皮膚疾患に存在する可能性を示した。今後このB細胞の機能や生理学的意義を明らかにすることで、新規の病態生理の理解や治療への介入の可能性をもっている。また、なぜ腸に分布するはずのB細胞が皮膚に分布するのかという、医学的意義を超えた生物学的な興味深さも持っている。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (11 results)

All 2023 2022 2021

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

  • [Journal Article] Summary of the current status of clinically diagnosed cases of Schnitzler syndrome in Japan2023

    • Author(s)
      Takimoto-Ito R, Kambe N, Kanazawa N, Kabashima K, et al.
    • Journal Title

      Allergology International

      Volume: 72 Issue: 2 Pages: 297-305

    • DOI

      10.1016/j.alit.2022.11.004

    • ISSN
      1323-8930, 1440-1592
    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Interleukin-13 inhibition by tralokinumab reduces inducible T-cell costimulator-positive innate lymphoid cells in skin lesions of atopic dermatitis2023

    • Author(s)
      Kogame Toshiaki、Yonekura Satoru、Lovato Paola、Hirata Masahiro、Takimoto-ito Riko、Takegami Tomoya、Komatsu-Fujii Takayoshi、Kambe Naotomo、Nomura Takashi、R?pke Mads A、Kabashima Kenji
    • Journal Title

      British Journal of Dermatology

      Volume: 188 Issue: 1 Pages: 146-148

    • DOI

      10.1093/bjd/ljac008

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Waves of layered immunity over innate lymphoid cells2022

    • Author(s)
      Kogame Toshiaki、Egawa Gyohei、Nomura Takashi、Kabashima Kenji
    • Journal Title

      Frontiers in Immunology

      Volume: 13

    • DOI

      10.3389/fimmu.2022.957711

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Treatment With Topical Sirolimus for Recurrent Lymphatic Malformation of the External Urethral Meatus2022

    • Author(s)
      Yonekura Satoru、Komori Takaya、Ishida Yoshihiro、Kogame Toshiaki、Kabashima Kenji
    • Journal Title

      JAMA Dermatology

      Volume: 158 Issue: 11 Pages: 1331-1331

    • DOI

      10.1001/jamadermatol.2022.2793

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] At‐risk circumstances for COVID‐19 increase the risk of pruritus: cross‐sectional and longitudinal analyses2022

    • Author(s)
      Kogame T.、Ogawa Y.、Kabashima K.、Yamamoto Y.
    • Journal Title

      Journal of the European Academy of Dermatology and Venereology

      Volume: 36 Issue: 3

    • DOI

      10.1111/jdv.17809

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Putative Immunological Functions of Inducible Skin-Associated Lymphoid Tissue in the Context of Mucosa-Associated Lymphoid Tissue2021

    • Author(s)
      Kogame Toshiaki、Kabashima Kenji、Egawa Gyohei
    • Journal Title

      Frontiers in Immunology

      Volume: 12 Pages: 733484-733484

    • DOI

      10.3389/fimmu.2021.733484

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Lymphoid follicles in Kimura disease may be a niche of the gut-type B cells.2023

    • Author(s)
      T. Kogame, H. Takishima, Akitaka Hata, Kenji Kabashima
    • Organizer
      International Societies for Investigative Dermatology 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The presence of ILC2 may suggest the pathophysiological contribution to eosinophilic pustulosis folliculitis2022

    • Author(s)
      T Kogame, T Takegami, F Budair, T Nomura, K Kabashima
    • Organizer
      European Society for Dermatological Research
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] AID expression of B cells in the tertiary lymphoid structures implies an immunoglobulin class switching in tumor immunity2021

    • Author(s)
      Tomoya Takegami, Toshiaki Kogame, Takashi Nomura, Naotomo Kambe, Takaya Komatsu, Kenji Kabashima
    • Organizer
      日本研究皮膚科学会 第46回年次学術大会・総会
    • Related Report
      2021 Research-status Report
  • [Presentation] iSALT structures in B-cell type pseudolymphoma and their potential for local plasmacytoid differentiation in the skin2021

    • Author(s)
      Kosei Nanya, Toshiaki Kogame, Masahiro Hirata, Riko Takimoto-Ito, Masakazu Fujimoto, Takashi Nomura, Naotomo Kambe, Kenji Kabashima
    • Organizer
      日本研究皮膚科学会 第46回年次学術大会・総会
    • Related Report
      2021 Research-status Report
  • [Presentation] possible niche for B-cell development in the skin in primary cutaneous plasmacytosis suggesting the presence of a functional unit as iSALT2021

    • Author(s)
      Keigo Takase, Toshiaki Kogame, Riko Takimoto-ito, Takayoshi Komatsu-Fujii, Rintaro Shibuya, Takashi Nomura, Naotomo Kambe, Kenji Kabashima
    • Organizer
      日本研究皮膚科学会 第46回年次学術大会・総会
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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