Species Reactivity
Human
Specificity
Detects human Indoleamine 2,3-dioxygenase/IDO in direct ELISAs.
Source
Monoclonal Mouse IgG 1 Clone # 700838
Purification
Protein A or G purified from hybridoma culture supernatant
Immunogen
E. coli-derived recombinant human Indoleamine 2,3-dioxygenase/IDO
Ala2-Gly403
Accession # P14902Formulation
Supplied in a saline solution containing BSA and Sodium Azide.
Label
Phycoerythrin
Applications
Recommended
ConcentrationSample
Intracellular Staining by Flow Cytometry
10 µL/10 6 cells
See below
Please Note: Optimal dilutions should be determined by each laboratory for each application. are available in the Technical Information section on our website.
Data Examples
Intracellular Staining by Flow Cytometry | Detection of Indoleamine 2,3‑dioxygenase/IDO in Human MDSCs by Flow Cytometry. Human myeloid-derived suppressor cells (MDSCs) treated with 10 ng/mL Recombinant Human IL‑6 (Catalog # ) and 10 ng/mL Recombinant Human GM‑CSF (Catalog # ) for 7 days were stained with Mouse Anti-Human Siglec‑3/CD33 APC‑conjugated Monoclonal Antibody (Catalog # ) and either (A) Mouse Anti-Human Indoleamine 2,3‑dioxygenase/IDO PE‑conjugated Monoclonal Antibody (Catalog # IC6030P) or (B) Mouse IgG1 Phycoerythrin Isotype Control (Catalog # ). To facilitate intracellular staining, cells were fixed with Flow Cytometry Fixation Buffer (Catalog # ) and permeabilized with Flow Cytometry Permeabilization/Wash Buffer I (Catalog # ). View our protocol for . |
Preparation and Storage
Shipping
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.
Background: Indoleamine 2,3-dioxygenase/IDO
Indoleamine 2,3-dioxygenase (also known as IDO) is a heme-containing intracellular dioxygenase catalyzing the degradation of the essential amino acid L-tryptophan to N‑formyl‑kynurenine (1). This degradation is the first and rate-limiting step of the L-kynurenine pathway (2). IDO is widely expressed in dendritic cells, macrophages, microglia, eosinophils, fibroblasts, endothelial cells, and most tumor cells. In immune cells, its expression is mainly induced by cytokines such as IFN-gamma, IFN-alpha, IFN‑ beta, and IL-10. IDO has an antimicrobial function due to its decreasing the availability of the essential amino acid tryptophan in inflammatory environments (3). Recent studies have demonstrated that IDO induces immunosuppression during infection, pregnancy, transplantation, autoimmunity, and neoplasia (3-5).
References:
Lewis-Ballester, A. et al. (2009) Proc. Natl. Acad. Sci. USA. 106:17371.
Costantino, G. (2009) Expert Opin. Ther. Targets 13:247.
Xu, H. et al. (2008) Immunol. Lett. 121:1.
Lob, S. et al. (2009) Nat. Rev. Cancer 9:445.
Curti, A. et al. (2009) Blood 113:2394.
Entrez Gene IDs:
3620 (Human); 15930 (Mouse)
Alternate Names:
3dioxygenase; EC 1.13.11.52; IDO; IDO1; IDOIDO-1; INDO; INDOindole 2,3-dioxygenase; Indoleamine 2; indoleamine 2,3-dioxygenase 1; Indoleamine 2,3-dioxygenase; indoleamine-pyrrole 2,3 dioxygenase; Indoleamine-pyrrole 2,3-dioxygenase
