The Phospho-IL10RA (Ser319/323) Antibody is a research tool designed to detect the phosphorylated form of the interleukin-10 receptor alpha (IL10RA) subunit at serine residues 319 and 323. This antibody is critical for studying IL10RA signaling, receptor stability, and its role in immune regulation. IL10RA is a component of the IL-10 receptor complex, which mediates anti-inflammatory cytokine signaling . Phosphorylation of IL10RA at these residues has been implicated in receptor ubiquitination and degradation, modulating IL-10 signaling pathways .
Phosphorylation of IL10RA at Ser319/323 is a regulatory mechanism that promotes receptor degradation via the ubiquitin-proteasome system. This process involves the recruitment of β-TrCP2, an E3 ubiquitin ligase, which binds to phosphorylated IL10RA and facilitates its ubiquitination . The phosphorylation-dependent degradation of IL10RA reduces the availability of functional IL-10 receptors on immune cells, thereby impairing IL-10-mediated anti-inflammatory responses .
| Molecular Feature | Description |
|---|---|
| Target Site | Serine 319 and 323 |
| Post-Translational Modification | Phosphorylation |
| Downstream Effect | Receptor ubiquitination and degradation |
| Pathway Impact | Reduced IL-10 signaling, increased pro-inflammatory responses |
IL10RA phosphorylation at Ser319/323 is a critical regulatory step in IL-10 receptor stability. Studies using this antibody demonstrated that:
Phosphorylation-dependent degradation of IL10RA reduces IL-10-mediated suppression of pro-inflammatory cytokines (e.g., TNF-α, IFN-γ) .
Mutations in IL10RA (e.g., c.301C>T, p.R101W) linked to early-onset IBD disrupt phosphorylation-dependent receptor degradation, leading to hyper-inflammatory states .
The antibody has been used to study IL10RA phosphorylation in:
Inflammatory Bowel Disease (IBD): Patients with IL10RA mutations exhibit impaired phosphorylation and receptor degradation, contributing to treatment-resistant colitis .
Tumor Microenvironment: Reduced IL10RA phosphorylation in macrophages correlates with enhanced tumor growth due to suppressed anti-tumor immunity .
The antibody is employed in: