Detection of IL‑9 in Human PBMCs by Flow Cytometry. Human peripheral blood mononuclear cells (PBMCs) either (A) untreated or (B) treated with PMA and Calcium Ionomycin were stained with Mouse Anti-Human IL‑9 APC‑conjugated Monoclonal Antibody (Catalog # IC209A) and Mouse Anti-Human IFN‑ gamma Fluorescein‑conjugated Monoclonal Antibody (Catalog # IC285F). Quadrant markers were set based on control antibody staining (Catalog # IC0041A). 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
The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
Protect from light. Do not freeze.
12 months from date of receipt, 2 to 8 °C as supplied.
Interleukin-9 (IL-9) is a 28-30 kDa monomeric glycosylated polypeptide that belongs to the IL-7/IL-9 family of proteins. Although multiple cell types are reported to express IL-9, including Th17 cells, eosinophils, basophils, NK T cells and mast cells, the two cell types possibly most central to the process are Th9 and ILC-2 (or innate lymphoid cell type 2) cells. IL-9 supports the growth of multiple hematopoietic cell types including germinal center B cells, macrophages, mast cells, neutrophils, megakaryocytes, and erythrocytes. It also promotes IgE production, the activation and chemoattraction of mast cells, mucus production by epithelium, Th17 cell proliferation and TGF-beta production by dendritic cells. IL-9 exerts its biological effects through a receptor complex composed of IL-9 R and the common gamma chain. Mature human IL-9 shares 57% amino acid sequence identity with mouse and rat IL-9.
Entrez Gene IDs:
3578 (Human); 16198 (Mouse)
Cytokine P40; HP40; IL9; IL-9homolog of mouse T cell and mast cell growth factor 40; interleukin 9; interleukin-9; p40 cytokine; p40 T-cell and mast cell growth factor; P40; T-cell growth factor P40
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