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Characterization of mammary intraepithelial lymphocytes

Research Project

Project/Area Number 19K22507
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 48:Biomedical structure and function and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Nitta Takeshi  東京大学, 大学院医学系研究科(医学部), 准教授 (30373343)

Project Period (FY) 2019-06-28 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2020: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords乳腺 / T細胞 / IEL / Granzyme / リンパ球 / 乳腺上皮 / 細菌叢
Outline of Research at the Start

乳腺には、他の体組織とは異なる固有の細菌が定着し、乳児の腸内細菌叢に多大な影響を及ぼす。我々は、乳腺上皮細胞の間隙に特殊なリンパ球「乳腺IEL(intraepithelial lymphocyte)」が多く存在し、Granzyme等の生理活性タンパク質を乳中に放出することを発見した。乳腺IELは妊娠・授乳期に特異的に出現し、離乳後も乳腺内に維持されるが、その分化機構や機能は不明である。本研究では、乳腺IELが生理活性因子を分泌することによって乳中の細菌叢と新生児の腸内細菌叢を制御する、という新規の母子免疫機構を想定し、実験的に検証することを目的とする。

Outline of Final Research Achievements

The epithelial layers of the mammary gland contain unique lymphocytes, which we call mammary intraepithelial lymphocytes (mIELs). In this study, we aimed to provide better cellular and molecular characterization of these mIELs. mIELs were comprised of unique types of CD8 T cells and gdT cells, both of which exhibit distinct gene expression profiles of effector molecules, cytokine receptors, and chemokine receptors, compared with other T cell types or intestinal IELs. mIELs also express many NK cell receptors, indicating that they are a novel type of NKT cells. We generated mice lacking Granzyme A/B/C, candidate effector proteins expressed in mIELs, and are conducting phenotyping analysis of these mice.

Academic Significance and Societal Importance of the Research Achievements

乳腺における免疫機構は、新生児の免疫系の構築や腸内細菌の制御の観点から重要であるが、先行研究が少なく、免疫細胞や遺伝子に関する基盤情報も限られている。本研究では、マウス乳腺に局在する乳腺IELを同定し、その調製・単離法を確立するとともに、高解像度の遺伝子発現データを取得した。乳腺IELは他の免疫細胞とは異なる特徴をもつ、新規のNKT細胞サブセットとわかった。また、乳腺IELによって産生され乳中に放出されるGranzyme分子群の欠損マウスを作製した。本成果は、乳腺の免疫系に関する研究資源を整備した学術的意義だけでなく、乳児の疾患治療と予防のための基盤知識の拡充につながる社会的意義を有する。

Report

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

    (14 results)

All 2021 2020 2019 2018 Other

All Int'l Joint Research (3 results) Journal Article (7 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 7 results,  Open Access: 4 results) Presentation (2 results) (of which Invited: 1 results) Remarks (2 results)

  • [Int'l Joint Research] German Cancer Research Center(ドイツ)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] King's College London(英国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] King's College London(英国)

    • Related Report
      2019 Research-status Report
  • [Journal Article] tepwise cell fate decision pathways during osteoclastogenesis at single-cell resolution.2021

    • Author(s)
      Tsukasaki M, Huynh NC, Okamoto K, Muro R, Terashima A, Kurikawa Y, Komatsu N, Pluemsakunthai W, Nitta T, Abe T, Kiyonari H, Okamura T, Sakai M, Matsukawa T, Matsumoto M, Kobayashi Y, Penninger JM, Takayanagi H
    • Journal Title

      Nat Metab

      Volume: 2 Issue: 12 Pages: 1382-1390

    • DOI

      10.1038/s42255-020-00318-y

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Fibroblasts as a source of self-antigens for central immune tolerance2020

    • Author(s)
      Nitta Takeshi、Tsutsumi Masanori、Nitta Sachiko、Muro Ryunosuke、Suzuki Emma C.、Nakano Kenta、Tomofuji Yoshihiko、Sawa Shinichiro、Okamura Tadashi、Penninger Josef M.、Takayanagi Hiroshi
    • Journal Title

      Nature Immunology

      Volume: 21 Issue: 10 Pages: 1172-1180

    • DOI

      10.1038/s41590-020-0756-8

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] OPG Production Matters Where It Happened.2020

    • Author(s)
      Tsukasaki M, Asano T, Muro R, Huynh NC, Komatsu N, Okamoto K, Nakano K, Okamura T, Nitta T, Takayanagi H
    • Journal Title

      Cell Rep

      Volume: 32 Issue: 10 Pages: 1-10

    • DOI

      10.1016/j.celrep.2020.108124

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Butyrophilin-like proteins display combinatorial diversity in selecting and maintaining signature intraepithelial γδ T cell compartments2020

    • Author(s)
      Jandke Anett、Melandri Daisy、Monin Leticia、Ushakov Dmitry S.、Laing Adam G.、Vantourout Pierre、East Philip、Nitta Takeshi、Narita Tomoya、Takayanagi Hiroshi、Feederle Regina、Hayday Adrian
    • Journal Title

      Nature Communications

      Volume: 11 Issue: 1 Pages: 3769-3769

    • DOI

      10.1038/s41467-020-17557-y

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Retroviral Gene Transduction into T Cell Progenitors for Analysis of T Cell Development in the Thymus2020

    • Author(s)
      Muro Ryunosuke、Takayanagi Hiroshi、Nitta Takeshi
    • Journal Title

      Methods in Molecular Biology

      Volume: 2111 Pages: 193-203

    • DOI

      10.1007/978-1-0716-0266-9_16

    • ISBN
      9781071602652, 9781071602669
    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Soluble RANKL is physiologically dispensable but accelerates tumour metastasis to bone2019

    • Author(s)
      Asano Tatsuo、Okamoto Kazuo、Nakai Yuta、Tsutsumi Masanori、Muro Ryunosuke、Suematsu Ayako、Hashimoto Kyoko、Okamura Tadashi、Ehata Shogo、Nitta Takeshi、Takayanagi Hiroshi
    • Journal Title

      Nature Metabolism

      Volume: 1 Issue: 9 Pages: 868-875

    • DOI

      10.1038/s42255-019-0104-1

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Ras homolog gene family H (RhoH) deficiency induces psoriasis-like chronic dermatitis by promoting TH17?cell polarization2018

    • Author(s)
      Tamehiro Norimasa、Nishida Kyoko、Sugita Yu、Hayakawa Kunihiro、Oda Hiroyo、Nitta Takeshi、Nakano Miwa、Nishioka Akiko、Yanobu-Takanashi Reiko、Goto Motohito、Okamura Tadashi、Adachi Reiko、Kondo Kazunari、Morita Akimichi、Suzuki Harumi
    • Journal Title

      Journal of Allergy and Clinical Immunology

      Volume: in press Issue: 5 Pages: 1878-1891

    • DOI

      10.1016/j.jaci.2018.09.032

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] Thymic fibroblasts: an emerging key player in central immune tolerance2021

    • Author(s)
      新田 剛
    • Organizer
      第35回自己免疫研究会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Molecular mechanism of Syk-mediated TCR signal in gdT cells2019

    • Author(s)
      Ryunosuke Muro, Takeshi Nitta, Hiroshi Takayanagi
    • Organizer
      第48回日本免疫学会学術集会
    • Related Report
      2019 Research-status Report
  • [Remarks] 東京大学大学院医学系研究科 免疫学 高柳研究室 研究内容

    • URL

      http://osteoimmunology.com/research.html

    • Related Report
      2020 Annual Research Report
  • [Remarks] 東京大学大学院医学系研究科 免疫学 高柳研究室 研究内容

    • URL

      http://osteoimmunology.com/research.html

    • Related Report
      2019 Research-status Report

URL: 

Published: 2019-07-04   Modified: 2022-01-27  

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