Discordant frequencies of tissue-resident and circulating CD180-negative B cells in chronic rhinosinusitis

Dijana Miljkovic, Judy Ou, Chandra Kirana, Kathryn E. Hulse, Ehud Hauben, Alkis Psaltis, Peter John Wormald, Sarah Vreugde*

*Corresponding author for this work

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

Background: The unconventional toll-like receptor (TLR) CD180 is implicated in chronic inflammatory diseases; however, its role in chronic rhinosinusitis (CRS) has yet to be investigated. Here we study the expression of CD180, its homologue TLR4 and myeloid differentiation factor 1 (MD1) on mucosal and systemic immune cell populations in relation to serum immunoglobulin G (IgG) levels. Methods: A total of 70 patients were recruited to the study. Mucosal and peripheral blood samples were prospectively collected from CRS patients and non-CRS controls without evidence of sinus disease. The expression of TLR4, MD1, and CD180 was investigated using qualitative real-time polymerase chain reaction (qRT-PCR), immunohistochemistry, and flow cytometry. Serum IgG levels were determined using enzyme-linked immunosorbent assay (ELISA). Results: CRS with nasal polyps (CRSwNP) patients had significantly increased messenger RNA (mRNA) expression of CD180 and MD1 compared to controls (5.54-fold and 2.1-fold, respectively, p < 0.01). B cells lacking CD180 were lower in CRSwNP tissue compared to CRS without nasal polyps (CRSsNP) and controls (21.07 ± 6.41 vs 41.61 ± 7.82 vs 40.06 ± 8.06; p < 0.01) but higher in blood (39.18 ± 8.3 vs 17.95 ± 7.82 and 12.49 ± 4.92; p ≤ 0.05). Conclusion: Changes in mucosal and peripheral CD180-expressing B cells were identified in CRSwNP patients compared to CRSsNP and controls. This suggests a role for these cells in the dysregulated immune response in these patients.

Original languageEnglish (US)
Pages (from-to)609-614
Number of pages6
JournalInternational Forum of Allergy and Rhinology
Volume7
Issue number6
DOIs
StatePublished - Jun 2017

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Keywords

  • B cells
  • CD180
  • chronic rhinosinusitis
  • flow cytometry
  • nasal polyps

ASJC Scopus subject areas

  • Immunology and Allergy
  • Otorhinolaryngology

Cite this

Miljkovic, D., Ou, J., Kirana, C., Hulse, K. E., Hauben, E., Psaltis, A., Wormald, P. J., & Vreugde, S. (2017). Discordant frequencies of tissue-resident and circulating CD180-negative B cells in chronic rhinosinusitis. International Forum of Allergy and Rhinology, 7(6), 609-614. https://doi.org/10.1002/alr.21924