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

194 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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