Alternative cross-priming through CCL17-CCR4-mediated attraction of CTLs toward NKT cell-licensed DCs

  • Verena Semmling
  • , Veronika Lukacs-Kornek
  • , Christoph A. Thaiss
  • , Thomas Quast
  • , Katharina Hochheiser
  • , Ulf Panzer
  • , Jamie Rossjohn
  • , Patrick Perlmutter
  • , Jia Cao
  • , Dale I. Godfrey
  • , Paul B. Savage
  • , Percy A. Knolle
  • , Waldemar Kolanus
  • , Irmgard Förster
  • , Christian Kurts

Research output: Contribution to journalArticlepeer-review

199 Scopus citations

Abstract

Cross-priming allows dendritic cells (DCs) to induce cytotoxic T cell (CTL) responses to extracellular antigens. DCs require cognate 'licensing' for cross-priming, classically by helper T cells. Here we demonstrate an alternative mechanism for cognate licensing by natural killer T (NKT) cells recognizing microbial or synthetic glycolipid antigens. Such licensing caused cross-priming CD8α+ DCs to produce the chemokine CCL17, which attracted naive CTLs expressing the chemokine receptor CCR4. In contrast, DCs licensed by helper T cells recruited CTLs using CCR5 ligands. Thus, depending on the type of antigen they encounter, DCs can be licensed for cross-priming by NKT cells or helper T cells and use at least two independent chemokine pathways to attract naive CTLs. Because these chemokines acted synergistically, this can potentially be exploited to improve vaccinations.

Original languageEnglish
Pages (from-to)313-320
Number of pages8
JournalNature Immunology
Volume11
Issue number4
DOIs
StatePublished - 2010
Externally publishedYes

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