Differential Roles for Interleukin-23 and Interleukin-17 in Intestinal Immunoregulation

Immunity. 2015 Oct 20;43(4):739-50. doi: 10.1016/j.immuni.2015.08.019. Epub 2015 Sep 29.

Abstract

Interleukin-23 (IL-23) and IL-17 are cytokines currently being targeted in clinical trials. Although inhibition of both of these cytokines is effective for treating psoriasis, IL-12 and IL-23 p40 inhibition attenuates Crohn's disease, whereas IL-17A or IL-17 receptor A (IL-17RA) inhibition exacerbates Crohn's disease. This dichotomy between IL-23 and IL-17 was effectively modeled in the multidrug resistance-1a-ablated (Abcb1a(-/-)) mouse model of colitis. IL-23 inhibition attenuated disease by decreasing colonic inflammation while enhancing regulatory T (Treg) cell accumulation. Exacerbation of colitis by IL-17A or IL-17RA inhibition was associated with severe weakening of the intestinal epithelial barrier, culminating in increased colonic inflammation and accelerated mortality. These data show that IL-17A acts on intestinal epithelium to promote barrier function and provide insight into mechanisms underlying exacerbation of Crohn's disease when IL-17A or IL-17RA is inhibited.

Publication types

  • Comparative Study

MeSH terms

  • ATP Binding Cassette Transporter, Subfamily B / deficiency
  • Animals
  • Colitis / drug therapy
  • Colitis / etiology
  • Colitis / immunology*
  • Colitis / microbiology
  • Disease Models, Animal
  • Disease Progression
  • Epithelium / physiopathology
  • Female
  • Forkhead Transcription Factors / analysis
  • Gene Expression Regulation / immunology
  • Helicobacter Infections / complications
  • Helicobacter Infections / immunology
  • Immunization, Passive
  • Immunoglobulin G / therapeutic use
  • Interleukin-12 Subunit p40 / antagonists & inhibitors
  • Interleukin-17 / immunology
  • Interleukin-17 / physiology*
  • Interleukin-23 / immunology
  • Interleukin-23 / physiology*
  • Interleukin-23 Subunit p19 / antagonists & inhibitors
  • Interleukin-23 Subunit p19 / immunology
  • Intestinal Mucosa / physiopathology
  • Mice
  • Mice, Knockout
  • Permeability
  • Receptors, Interleukin-17 / antagonists & inhibitors
  • Receptors, Interleukin-17 / immunology
  • Receptors, Interleukin-17 / physiology*
  • T-Lymphocyte Subsets / immunology
  • T-Lymphocytes, Regulatory / immunology
  • Transcriptome

Substances

  • ATP Binding Cassette Transporter, Subfamily B
  • Forkhead Transcription Factors
  • Foxp3 protein, mouse
  • Il17ra protein, mouse
  • Immunoglobulin G
  • Interleukin-12 Subunit p40
  • Interleukin-17
  • Interleukin-23
  • Interleukin-23 Subunit p19
  • Receptors, Interleukin-17
  • multidrug resistance protein 3

Associated data

  • GEO/GSE72212