Journal: Molecular Vision
Article Title: Analysis of interleukin-20 receptor complexes in trabecular meshwork cells and effects of cytokine signaling in anterior segment perfusion culture
doi:
Figure Lengend Snippet: Schematic of interleukin-20 receptor complex before and after activation by IL-20, -19, or -24. The type I receptor is composed of the interleukin-20RA (IL-20RA) and IL-20RB proteins while the type II receptor contains the IL-22RA1 and IL-20RB proteins [ , , ]. Upon cytokine binding, Jak1 binds near the transmembrane region of IL-20RA and IL-22RA1. Tyk2 is proposed to bind to IL-20RB based on sequence homology between IL-20RB and interferon-γ receptor 1 (IFNγR1) . Binding of the cytokine results in closer juxtaposition of Jak1 and Tyk2, leading to autophosphorylation of the tyrosine kinases, phosphorylation of IL-20RA, and recruitment and phosphorylation of signal transducer and activator of transcription (STAT)-3, STAT-1, and possibly, STAT-5 [ , ]. The STATs can then translocate to the nucleus to activate transcription.
Article Snippet: The membranes were then probed with the following signal transducer and activator of transcription (STAT) antibodies (all antibodies from Cell Signaling Technology Inc., Danvers, MA, unless stated otherwise): phospho-tyrosine701 STAT-1 (mouse monoclonal; ThermoFisher, 33–3400), total STAT-3 (mouse monoclonal; 9139), phospho-serine727 STAT-3 (rabbit polyclonal; 9134), phospho-serine705 STAT-3 (rabbit polyclonal; 9131), total STAT-5 (rabbit polyclonal; 25,656), and phospho-TyrosineY694 (mouse monoclonal; 9356).
Techniques: Activation Assay, Binding Assay, Sequencing