CD11b+ migratory dendritic cells mediate CD8 T cell cross-priming and cutaneous imprinting after topical immunization

PLoS One. 2014 Mar 11;9(3):e91054. doi: 10.1371/journal.pone.0091054. eCollection 2014.

Abstract

Topical antigen application is a focus of current vaccine research. This immunization route mimics natural antigen exposure across a barrier tissue and generates T cells imprinted for skin-selective homing. Soluble antigens introduced through this route require cross-presentation by DC to generate CD8 T cell responses. Here we have explored the relative contribution of various skin-derived DC subsets to cross-priming and skin-selective imprinting. In our model, DC acquire soluble Ag in vivo from immunized murine skin for cross-presentation to naïve CD8 T cells ex vivo. We find CD11b(+) migratory DC to be the relevant cross-priming DC in this model. Both Langerin(+) and Langerin(-) CD11b(+) migratory DC can cross-present antigen in our system, but only the Langerin+ subset can induce expression of the skin-selective addressin E-selectin ligand. Thus, the CD11b(+) Langerin(+) migratory DC population, comprised primarily of Langerhans cells, both cross-primes naïve CD8 T cells and imprints them with skin-homing capabilities.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Animals
  • Antigen Presentation / immunology*
  • Antigens / immunology
  • Antigens, Surface / metabolism
  • CD11b Antigen / metabolism*
  • CD8-Positive T-Lymphocytes / immunology*
  • CD8-Positive T-Lymphocytes / metabolism
  • Chemotaxis / immunology
  • Cross Reactions / immunology*
  • Dendritic Cells / immunology*
  • Dendritic Cells / metabolism*
  • Gene Expression
  • Immunization
  • Lectins, C-Type / metabolism
  • Lymphocyte Activation / immunology
  • Mannose-Binding Lectins / metabolism
  • Mice
  • Receptors, Fibroblast Growth Factor / genetics
  • Receptors, Fibroblast Growth Factor / metabolism
  • Sialoglycoproteins / genetics
  • Sialoglycoproteins / metabolism
  • Skin / immunology*
  • Skin / metabolism

Substances

  • Antigens
  • Antigens, Surface
  • CD11b Antigen
  • Cd207 protein, mouse
  • Lectins, C-Type
  • Mannose-Binding Lectins
  • Receptors, Fibroblast Growth Factor
  • Sialoglycoproteins
  • cysteine-rich fibroblast growth factor receptor