ArticleClinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology2024
Epithelial Interleukin-1 Receptor-Like-1 Activation Is Contingent on Interleukin-33 Isoforms and Asthma-Related Receptor Variation.
Article in Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Structural and functional consequences of IL33 and IL1RL1 coding variants on IL-33/ST2 signaling.Genes and immunity · 2026Article
- Mast cells and endothelial cells mediate interleukin-33 and ST2 responses in distal chronic obstructive pulmonary disease lungs.American journal of respiratory and critical care medicine · 2026Article
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Authors and funding
14 authors.
Funding
Abstract
introductionThe interleukin-33/interleukin-1 receptor-like-1 (IL-33/IL1RL1) signalling pathway is implicated in asthma pathogenesis, with IL1RL1 nonsynonymous genetic polymorphisms associated with disease risk. We aimed to determine these variants' effect on IL1RL1 signalling induced by different IL33 isoforms thought to be elevated in the asthmatic airway.
methodIn a project funded by GSK plc, which has developed an IL-33 receptor inhibitor for asthma treatment, human embryonic kidney 293 (HEK293) cells expressing secreted embryonic alkaline phosphatase (SEAP) driven by a nuclear factor kappa-beta (NF-κB) promoter, were transiently transfected with IL1RL1, containing one of four extracellular and Toll/interleukin 1 receptor (TIR) domain haplotypes. Cells were stimulated with seven different splice and proteolytic-generated IL-33 isoforms (0.001-50 ng/mL) for 24 h. Supernatant SEAP activity and interleukin-8 (IL-8) levels were determined. Primary human bronchial epithelial cells (HBECs) representing different genotype carriers were stimulated with IL-33
resultsHEK293 cells carrying both asthma extracellular and TIR domain IL1RL1 risk haplotypes presented maximal IL33-driven signalling, with minimal signalling after IL-33 activation in other protective haplotypes. All IL-33 isoforms activated IL1RL1 but with differing magnitudes. Proteolytically cleaved IL33
conclusionsOverall, our study suggests asthma patients carrying the extracellular and TIR domain risk haplotype and have a lung microenvironment that promotes elevated levels of cleaved IL33, particularly where IL33
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