CST, 64817S, IDO (D5J4E™) Rabbit Monoclonal Antibody (Alexa Fluor® 488 Conjugate)

Monoclonal Antibody for studying IDO. Validated for Immunohistochemistry (Paraffin). Highly specific and rigorously validated in-house, IDO (D5J4E^™) Rabbit Monoclonal Antibody (Alexa Fluor^® 488 Conjugate) (CST #64817) is ready to ship. Product Usage Information Immunohistochemistry (Paraffin): 1:100 - 1:400 Storage Supplied in PBS (pH 7.2), less than 0.1% sodium azide, and 2 mg/mL BSA. Store at 4°C. Do not aliquot the antibody. Protect from light. Do not freeze. Protocol Available protocols: Immunohistochemistry (Paraffin) Specificity / Sensitivity IDO (D5J4E™) Rabbit Monoclonal Antibody (Alexa Fluor Species Reactivity: Human Source / Purification Monoclonal antibody is produced by immunizing animals with recombinant human IDO protein. Background INDO/IDO1/indoleamine 2,3-dioxygenase (IDO) is an IFN-γ-inducible enzyme that catalyzes the rate-limiting step of tryptophan degradation (1). IDO is upregulated in many tumors and in dendritic cells in tumor-draining lymph nodes. Elevated tryptophan catabolism in these cells leads to tryptophan starvation of T cells, limiting T cell proliferation and activation (2). Therefore, IDO is considered an immunosuppressive molecule, and research studies have shown that upregulation of IDO is a mechanism of cancer immune evasion (3). The gastrointestinal stromal tumor drug, imatinib, was found to act, in part, by reducing IDO expression, resulting in increased CD8 T cell activation and induction of apoptosis in regulatory T cells (4). In addition to its enzymatic activity, IDO was recently shown to have signaling capability through an immunoreceptor tyrosine-based inhibitory motif (ITIM) that is phosphorylated by Fyn in response to TGF-β. This leads to recruitment of SHP-1 and activation of the noncanonical NF-κB pathway (5). Alternate Names I23O1; IDO; IDO-1; IDO1; INDO; indolamine 2,3 dioxygenase; indole 2,3-dioxygenase; Indoleamine 2,3-dioxygenase 1; indoleamine-pyrrole 2,3 dioxygenase; Indoleamine-pyrrole 2,3-dioxygenase Specification REACTIVITY: H SENSITIVITY: Endogenous Source/Isotype: Rabbit IgG