Induction of Interleukin-9-Producing Mucosal Mast Cells Promotes Susceptibility to IgE-Mediated Experimental Food Allergy

Immunity. 2015 Oct 20;43(4):788-802. doi: 10.1016/j.immuni.2015.08.020. Epub 2015 Sep 22.

Abstract

Experimental IgE-mediated food allergy depends on intestinal anaphylaxis driven by interleukin-9 (IL-9). However, the primary cellular source of IL-9 and the mechanisms underlying the susceptibility to food-induced intestinal anaphylaxis remain unclear. Herein, we have reported the identification of multifunctional IL-9-producing mucosal mast cells (MMC9s) that can secrete prodigious amounts of IL-9 and IL-13 in response to IL-33, and mast cell protease-1 (MCPt-1) in response to antigen and IgE complex crosslinking, respectively. Repeated intragastric antigen challenge induced MMC9 development that required T cells, IL-4, and STAT6 transcription factor, but not IL-9 signals. Mice ablated of MMC9 induction failed to develop intestinal mastocytosis, which resulted in decreased food allergy symptoms that could be restored by adoptively transferred MMC9s. Finally, atopic patients that developed food allergy displayed increased intestinal expression of Il9- and MC-specific transcripts. Thus, the induction of MMC9s is a pivotal step to acquire the susceptibility to IgE-mediated food allergy.

Publication types

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

MeSH terms

  • Adoptive Transfer
  • Anaphylaxis / etiology
  • Anaphylaxis / immunology
  • Animals
  • Base Sequence
  • Bone Marrow Cells / cytology
  • Cell Lineage
  • Chymases / biosynthesis
  • Chymases / genetics
  • Diarrhea / etiology
  • Diarrhea / immunology
  • Disease Susceptibility
  • Duodenum / immunology
  • Duodenum / pathology
  • Food Hypersensitivity / etiology
  • Food Hypersensitivity / immunology*
  • Food Hypersensitivity / pathology
  • Humans
  • Hypersensitivity, Immediate / complications
  • Immunoglobulin E / immunology*
  • Interleukin-9 / biosynthesis
  • Interleukin-9 / genetics
  • Interleukin-9 / metabolism*
  • Interleukins / biosynthesis
  • Interleukins / metabolism
  • Interleukins / physiology
  • Intestinal Mucosa / immunology*
  • Mast Cells / immunology*
  • Mast Cells / metabolism
  • Mast Cells / transplantation
  • Mastocytosis / immunology*
  • Mastocytosis / pathology
  • Mice
  • Mice, Inbred Strains
  • Molecular Sequence Data
  • Ovalbumin / administration & dosage
  • Ovalbumin / immunology
  • Ovalbumin / toxicity
  • RNA, Messenger / biosynthesis
  • RNA, Messenger / genetics
  • STAT6 Transcription Factor / physiology
  • Species Specificity
  • T-Lymphocytes / immunology

Substances

  • Interleukin-9
  • Interleukins
  • RNA, Messenger
  • STAT6 Transcription Factor
  • Stat6 protein, mouse
  • Immunoglobulin E
  • Ovalbumin
  • Chymases
  • Mcpt1 protein, mouse

Associated data

  • GEO/GSE72921