Involvement of CD40-CD40L and ICOS-ICOSL in the development of chronic rhinosinusitis by targeting eosinophils

Frontiers in Immunology

Immunology

Qingqing Jiao¹  Aina Zhou²  Zhichen Liu²  Jue Wang²  Huanxia Xie²  Yuhui Fan²  Jisheng Liu²  Chenxi Shi³  Yushuang Zheng³ 

[1] Department of Dermatology, The First Affiliated Hospital of Soochow University, Suzhou, China;Department of Ear, Nose, and Throat, The First Affiliated Hospital of Soochow University, Suzhou, China;Department of Pathology, The First Affiliated Hospital of Soochow University, Suzhou, China;

关键词: CD40-CD40L;    ICOS-ICOSL;    chronic rhinosinusitis;    eosinophils;    TNF-α;    IL-5;    p38 MAPK;   

DOI  :  10.3389/fimmu.2023.1171308

 received in 2023-02-22, accepted in 2023-03-20,  发布年份 2023

来源: Frontiers

【 摘 要 】

BackgroundChronic rhinosinusitis (CRS), whose prevalence and pathogenesis are age-related, is characterized by nasal tissue eosinophil infiltration. CD40-CD40 ligand (CD40L) pathway involves in the eosinophil-mediated inflammation, and inducible co-stimulator (ICOS)–ICOS ligand (ICOSL) signal can strengthen CD40-CD40L interaction. Whether CD40-CD40L and ICOS-ICOSL have a role in the development of CRS remains unknown.ObjectivesThe aim of this study is to investigate the association of CD40-CD40L and ICOS-ICOSL expression with CRS and underlying mechanisms.MethodsImmunohistology detected the expression of CD40, CD40L, ICOS, and ICOSL. Immunofluorescence was performed to evaluate the co-localizations of CD40 or ICOSL with eosinophils. Correlations between CD40-CD40L and ICOS-ICOSL as well as clinical parameters were analyzed. Flow cytometry was used to explore the activation of eosinophils by CD69 expression and the CD40 and ICOSL expression on eosinophils.ResultsCompared with the non-eCRS subset, ECRS (eosinophilic CRS) subset showed significantly increased CD40, ICOS, and ICOSL expression. The CD40, CD40L, ICOS, and ICOSL expressions were all positively correlated with eosinophil infiltration in nasal tissues. CD40 and ICOSL were mainly expressed on eosinophils. ICOS expression was significantly correlated with the expression of CD40-CD40L, whereas ICOSL expression was correlated with CD40 expression. ICOS-ICOSL expression positively correlated with blood eosinophils count and disease severity. rhCD40L and rhICOS significantly enhanced the activation of eosinophils from patients with ECRS. Tumor necrosis factor–α (TNF-α) and interleukin-5 (IL-5) obviously upregulated CD40 expression on eosinophils, which was significantly inhibited by the p38 mitogen-activated protein kinase (MAPK) inhibitor.ConclusionsIncreased CD40-CD40L and ICOS-ICOSL expressions in nasal tissues are linked to eosinophils infiltration and disease severity of CRS. CD40-CD40L and ICOS-ICOSL signals enhance eosinophils activation of ECRS. TNF-α and IL-5 regulate eosinophils function by increasing CD40 expression partly via p38 MAPK activation in patients with CRS.

【 授权许可】

Unknown   
Copyright © 2023 Zhou, Shi, Fan, Zheng, Wang, Liu, Xie, Liu and Jiao