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Abstract

かぶれの発症における血管周囲の免疫細胞の集積の重要性の解明. 京都大学プレスリリース. 2014-09-24.

It remains largely unclear how antigen-presenting cells (APCs) encounter effector or memory T cells efficiently in the periphery. Here we used a mouse contact hypersensitivity (CHS) model to show that upon epicutaneous antigen challenge, dendritic cells (DCs) formed clusters with effector T cells in dermal perivascular areas to promote in situ proliferation and activation of skin T cells in a manner dependent on antigen and the integrin LFA-1. We found that DCs accumulated in perivascular areas and that DC clustering was abrogated by depletion of macrophages. Treatment with interleukin 1α (IL-1α) induced production of the chemokine CXCL2 by dermal macrophages, and DC clustering was suppressed by blockade of either the receptor for IL-1 (IL-1R) or the receptor for CXCL2 (CXCR2). Our findings suggest that the dermal leukocyte cluster is an essential structure for elicitating acquired cutaneous immunity.

Journal

  • Nature immunology

    Nature immunology (15), 1064-1069, 2014-09-21

    Nature Publishing Group

Codes

  • NII Article ID (NAID)
    120005477231
  • NII NACSIS-CAT ID (NCID)
    AA11466707
  • Text Lang
    ENG
  • Article Type
    journal article
  • ISSN
    1529-2908
  • Data Source
    IR 
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