ELISA: (direct and indirect: 1:2,000-1:10,000). Flow Cytometry: (1:200-1:500). Immunocytochemistry: (1:500) . Western Blot: (1:2,000-1:5,000 using ECL, suggested blocking and dilution buffer is PBST containing 0.05 % Tween 20 and 5 % skim milk, suggested incubation time is 1 hour at room temperature). Optimal conditions must be determined individually for each application.
Restrictions
For Research Use only
Format
Liquid
Concentration
1 mg/mL
Buffer
Liquid. 0.2um-filtered solution in PBS, pH 7.4. Contains no preservatives.
Preservative
Without preservative
Storage
-20 °C
Storage Comment
Stable for at least 6 months after receipt when stored at -20°C.
IDO catalyzes the first and rate-limiting step in the main pathway of human tryptophan catabolism, the kynurenine pathway. Proinflammatory mediators, such as endotoxin and IFN-gamma induce the expression of IDO in several tissues. IDO-dependent suppression of T-cell responses might function as natural immunoregulatory mechanism. Physiological IDO activity has been implicated in T-cell tolerance to tumors, dysfunctional selftolerance in non-obese diabetic (NOD) mice, and as a protective negative regulator in autoimmune disorders.