Detection of IL‑22BP in Human (PBMC) Monocytes by Flow Cytometry. Human peripheral blood mononuclear cell (PBMC) monocytes were stained with Mouse Anti-Human CD14 PE‑conjugated Monoclonal Antibody (Catalog # FAB3832P) and either (A) Mouse Anti-Human IL‑22BP Monoclonal Antibody (Catalog # MAB10871) or (B) Mouse IgG2B Flow Cytometry Isotype Control (Catalog # MAB0041) followed by Allophycocyanin-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # F0101B). To facilitate intracellular staining, cells were fixed with Flow Cytometry Fixation Buffer (Catalog # FC004) and permeabilized with Flow Cytometry Permeabilization/Wash Buffer I (Catalog # FC005). View our protocol for Staining Intracellular Molecules.
Preparation and Storage
Reconstitute at 0.5 mg/mL in sterile PBS.
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
12 months from date of receipt, -20 to -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
6 months, -20 to -70 °C under sterile conditions after reconstitution.
Interleukin 22 Binding Protein (IL-22BP), also known as Cytokine Receptor Family (CRF) 2‑10, CRF2-X, and IL-22 RA2, is a secreted glycoprotein belonging to the type II cytokine receptor family. It encodes a precursor protein of 231 amino acid (aa) residues with a 21 aa putative signal peptide and five potential N-linked glycosylation sites. IL-22BP lacks a transmembrane and cytoplasmic domain and is most closely related to the extracellular domains of IL‑22 R (CRF2-9) and IL-20 R (CRF2-8), sharing 33% and 34% aa sequence identity, respectively. It also shares sequence homology with the extracellular domains of IL-10 R (29%), IL-10 R beta (30%), the IFN receptors (23‑25%) and tissue factor (26%). IL-22BP antagonizes IL-22 activity by specifically binding IL-22 with high affinity and blocking its interaction with the cell surface IL-22 receptor heteromeric complex composed IL-22 R and IL‑20 R. IL-22BP is expressed in multiple tissues. The highest levels of expression are found in breast, lungs and colon. The major cell types producing IL-22BP are monocytes, activated B cells and epithelial cells (1), and is constitutively expressed by a subset of conventional dendritic cells (2). IL-22BP is regulated by the inflammasome and it has been suggested to modulate tumorigenesis in the intestine (3).
Xu, W. et al. (2001) Proc. Natl. Acad. Sci. USA 98:9511.
Martin, J. et al. (2014) Mucosal Immunol. 7:101.
Huber, S. et al. (2012) Nature 491:259.
Interleukin 22 Binding Protein
Entrez Gene IDs:
116379 (Human); 237310 (Mouse)
class II cytokine receptor; CRF2-10; CRF2-S1IL22BP; CRF2-X; Cytokine receptor class-II member 10; Cytokine receptor family 2 member 10; Cytokine receptor family type 2, soluble 1; IL-22 RA2; IL-22 receptor subunit alpha-2; IL22BP; IL-22BP; IL-22BPCRF2X; IL22RA2; IL-22RA2; IL-22R-alpha-2; interleukin 22 receptor, alpha 2; interleukin 22-binding protein; interleukin-22 receptor subunit alpha-2; Interleukin-22-binding protein; MGC150509; MGC150510; zcytoR16
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