Tyrosine phosphatase SHP-2 mediates C-type lectin receptor-induced activation of the kinase Syk and anti-fungal TH17 responses

Nat Immunol. 2015 Jun;16(6):642-52. doi: 10.1038/ni.3155. Epub 2015 Apr 27.

Abstract

Fungal infection stimulates the canonical C-type lectin receptor (CLR) signaling pathway via activation of the tyrosine kinase Syk. Here we identify a crucial role for the tyrosine phosphatase SHP-2 in mediating CLR-induced activation of Syk. Ablation of the gene encoding SHP-2 (Ptpn11; called 'Shp-2' here) in dendritic cells (DCs) and macrophages impaired Syk-mediated signaling and abrogated the expression of genes encoding pro-inflammatory molecules following fungal stimulation. Mechanistically, SHP-2 operated as a scaffold, facilitating the recruitment of Syk to the CLR dectin-1 or the adaptor FcRγ, through its N-SH2 domain and a previously unrecognized carboxy-terminal immunoreceptor tyrosine-based activation motif (ITAM). We found that DC-derived SHP-2 was crucial for the induction of interleukin 1β (IL-1β), IL-6 and IL-23 and anti-fungal responses of the TH17 subset of helper T cells in controlling infection with Candida albicans. Together our data reveal a mechanism by which SHP-2 mediates the activation of Syk in response to fungal infection.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amino Acid Motifs / genetics
  • Animals
  • Antigens, Fungal / immunology
  • Candidiasis / immunology*
  • Cells, Cultured
  • Cytokines / metabolism
  • Dendritic Cells / physiology*
  • Enzyme Activation
  • Inflammation Mediators / metabolism
  • Intracellular Signaling Peptides and Proteins / metabolism*
  • Lectins, C-Type / genetics
  • Lectins, C-Type / metabolism
  • Lymphocyte Activation
  • Macrophages / physiology*
  • Membrane Proteins / genetics
  • Mice
  • Mice, Inbred C57BL
  • Mice, Knockout
  • Mutation / genetics
  • Protein Tyrosine Phosphatase, Non-Receptor Type 11 / genetics
  • Protein Tyrosine Phosphatase, Non-Receptor Type 11 / metabolism*
  • Protein-Tyrosine Kinases / metabolism*
  • Receptors, IgE / genetics
  • Receptors, IgE / metabolism
  • Signal Transduction
  • Syk Kinase
  • T-Lymphocytes, Helper-Inducer / immunology*
  • Th17 Cells / immunology*

Substances

  • Antigens, Fungal
  • Clecsf8 protein, mouse
  • Cytokines
  • Inflammation Mediators
  • Intracellular Signaling Peptides and Proteins
  • Lectins, C-Type
  • Membrane Proteins
  • Receptors, IgE
  • dectin 1
  • Protein-Tyrosine Kinases
  • Syk Kinase
  • Syk protein, mouse
  • Protein Tyrosine Phosphatase, Non-Receptor Type 11