Contrasting roles for the receptor for advanced glycation end-products on structural cells in allergic airway inflammation vs. Airway hyperresponsiveness

Akihiko Taniguchi, Nobuaki Miyahara, Koichi Waseda, Etsuko Kurimoto, Utako Fujii, Yasushi Tanimoto, Mikio Kataoka, Yasuhiko Yamamoto, Erwin W. Gelfand, Hiroshi Yamamoto, Mitsune Tanimoto, Arihiko Kanehiro

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The receptor for advanced glycation end-products (RAGE) is a multiligand receptor that belongs to the immunoglobulin superfamily. RAGE is reported to be involved in various inflammatory disorders; however, studies that address the role of RAGE in allergic airway disease are inconclusive. RAGE-sufficient (RAGE-/-) and RAGE-deficient (RAGE+/+) mice were sensitized to ovalbumin, and airway responses were monitored after ovalbumin challenge. RAGE+/+ mice showed reduced eosinophilic inflammation and goblet cell metaplasia, lower T helper type 2 (Th2) cytokine production from spleen and peribronchial lymph node mononuclear cells, and lower numbers of group 2 innate lymphoid cells in the lung compared with RAGE-/- mice following sensitization and challenge. Experiments using irradiated, chimeric mice showed that the mice expressing RAGE on radio-resistant structural cells but not hematopoietic cells developed allergic airway inflammation; however, the mice expressing RAGE on hematopoietic cells but not structural cells showed reduced airway inflammation. In contrast, absence of RAGE expression on structural cells enhanced innate airway hyperresponsiveness (AHR). In the absence of RAGE, increased interleukin (IL)-33 levels in the lung were detected, and blockade of IL-33 receptor ST2 suppressed innate AHR in RAGE+/+ mice. These data identify the importance of RAGE expressed on lung structural cells in the development of allergic airway inflammation, T helper type 2 cell activation, and group 2 innate lymphoid cell accumulation in the airways. RAGE on lung structural cells also regulated innate AHR, likely through the IL-33-ST2 pathway. Thus manipulating RAGE represents a novel therapeutic target in controlling allergic airway responses.

Original languageEnglish
Pages (from-to)L789-L800
JournalAmerican Journal of Physiology - Lung Cellular and Molecular Physiology
Volume309
Issue number8
DOIs
Publication statusPublished - 2015

Keywords

  • Airway hyperresponsiveness
  • Allergic airway inflammation
  • Asthma
  • RAGE

ASJC Scopus subject areas

  • Physiology
  • Pulmonary and Respiratory Medicine
  • Physiology (medical)
  • Cell Biology

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