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Am J Respir Cell Mol Biol. 2015 Nov;53(5):601-6. doi: 10.1165/rcmb.2015-0207RC.

Age-related increased prevalence of asthma and nasal polyps in chronic rhinosinusitis and its association with altered IL-6 trans-signaling.

Author information

1
1 Division of Allergy-Immunology, Department of Medicine, and.
2
2 Division of Allergy-Immunology, Department of Internal Medicine, University of South Florida College of Medicine, Tampa, Florida.
3
3 Division of Rheumatology, Department of Medicine, Kyung Hee University School of Medicine, Seoul, Korea; and.
4
4 Department of Otorhinolaryngology-Head and Neck Surgery, Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea.
5
5 Department of Otolaryngology, Northwestern Feinberg School of Medicine, Chicago, Illinois.

Abstract

We report that S100 proteins were reduced in patients with chronic rhinosinusitis (CRS). S100A8/9, which is important in epithelial barrier function, was particularly decreased in elderly patients with CRS. Epithelial expression of S100A8/9 is partly regulated by the IL-6 trans-signaling pathway. The goal of this study was to investigate whether or not age-related reduction of S100A8/9 in CRS is associated with blunting of IL-6 trans-signaling. The levels of IL-6, soluble IL-6 receptor (sIL-6R), soluble gp130 (sgp130), and S100A8/9 from control subjects (n = 10), and patients with CRS without nasal polyps (n = 13) and those with CRS with nasal polyps (CRSwNP) (n = 14), were measured by ELISA. Age-related differences in the level of each protein were investigated. Normal human bronchial epithelial cells were cultured in air-liquid interface and stimulated with IL-6/sIL-6R and tumor necrosis factor (TNF)-α with or without the addition of sgp130, a natural inhibitor of IL-6 trans-signaling. There was a significant age-related decline in S100A8/9 and an increase in sgp130 in nasal tissue samples from patients with CRSwNP, although there was no age-related difference in IL-6/sIL-6R production. Additionally, expression of the S100A8/9 gene and protein was increased significantly by IL-6/sIL-6R plus TNF-α in normal human bronchial epithelial cells. This increase was blocked by sgp130. These results suggest that increased sgp130 in older patients may inhibit IL-6 trans-signaling, impair barrier function, and decrease S1008/9 production in elderly patients with CRSwNP. Restoration of barrier function by targeting sgp130 may be a novel treatment strategy.

KEYWORDS:

S100A8/9; aging; chronic rhinosinusitis; nasal polyps; soluble gp130

PMID:
26266960
PMCID:
PMC4742956
DOI:
10.1165/rcmb.2015-0207RC
[Indexed for MEDLINE]
Free PMC Article

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