Abstract:
:The cell-surface receptor ST2L triggers cytokine release by immune cells upon exposure to its ligand IL-33. To study the effect of ST2L-dependent signaling in different cell types, we generated antagonist antibodies that bind different receptor domains. We sought to characterize their activities in vitro using both transfected cells as well as basophil and mast cell lines that endogenously express the ST2L receptor. We found that antibodies binding Domain 1 versus Domain 3 of ST2L differentially impacted IL-33-induced cytokine release by mast cells but not the basophilic cell line. Analysis of gene expression in each cell type in the presence and absence of the Domain 1 and Domain 3 mAbs revealed distinct signaling pathways triggered in response to IL-33 as well as to each anti-ST2L antibody. We concluded that perturbing the ST2L/IL-33/IL-1RAcP complex using antibodies directed to different domains of ST2L have a cell-type-specific impact on cytokine release, and may indicate the association of additional receptors to the ST2L/IL-33/IL-1RAcP complex in mast cells.
journal_name
Mol Immunoljournal_title
Molecular immunologyauthors
Fursov N,Lu J,Healy C,Wu SJ,Lacy E,Filer A,Li Y,Liu C,Lamb R,Jones B,Reddy R,Petley T,Duffy Kdoi
10.1016/j.molimm.2016.05.019subject
Has Abstractpub_date
2016-07-01 00:00:00pages
178-87eissn
0161-5890issn
1872-9142pii
S0161-5890(16)30099-2journal_volume
75pub_type
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