IDO1 Fluorogenic Inhibitor Screening Assay Kit (384)

Catalog #: 72047
Size: 384 wells
L-tryptophan (L-Trp) is an essential amino acid necessary for protein synthesis in mammalian cells and the L-Trp to kynurenine (Kyn) pathway is firmly established as a key regulator of innate and adaptive immunity. Catabolism of L-Trp to Kyn maintains an immunosuppressive microenvironment by starving immune cells of L-Trp and releasing degradation products of L-Trp that have immunosuppressive functions. Indoleamine 2,3- dioxygenases (IDO1 & IDO2), two of the rate limiting enzymes in this pathway, are upregulated in many tumors, providing cancer cells with an avenue for immune evasion.

The IDO1 Fluorogenic Inhibitor Screening Assay Kit is designed to measure enzyme inhibition of indoleamine 2,3-dioxygenase 1 (IDO1). The IDO1 Fluorogenic Inhibitor Screening Assay Kit is simple to use and detects fluorescence at long wavelengths, which minimizes potential errors due to compound interference. In the assay, the inhibitor and enzyme are added to a sample containing L-Trp substrate. After a 1 hour incubation at room temperature, the fluorescence solution is added and incubated at 37°C for four hours. Activity is measured by reading sample fluorescence at λ=510 nm following excitation of the reaction product at λ=400 nm.

Indoleamine 2,3-dioxygenase 1, IDO
Supplied As:
The kit comes in a convenient format, with enough reaction solution and enzyme to perform a total of 400 reactions.
DMSO >0.5%, strong acids or bases, ionic detergents, high salt. Warning: the Fluorescence Solution contains a component that is known to be a skin and eye irritant. Use caution and appropriate personal protective equipment when handling this component.


Instructions for use:
See assay kit data sheet for detailed protocol
Storage / Stability:
Stable at least 6 months from date of receipt, when stored as directed. Kit components require different storage conditions. Be sure to store each component at the proper temperature upon arrival.
Useful for the study of IDO1 enzymology, inhibitor screening, and selectivity profiling.

Seegers, N., et al. J. Biomol. Screen. 2014. 19(9):1266-74.

License Disclosure: Purchase of this cell line grants you with a 10-year license to use this cell line in your immediate laboratory, for research use only. This license does not permit you to share, distribute, sell, sublicense, or otherwise make the cell line available for use to other laboratories, departments, research institutions, hospitals, universities, or biotech companies. The license does not permit the use of this cell line in humans or for therapeutic or drug use. Inappropriate use or distribution of this cell line will result in revocation of the license and result in an immediate cease of sales and distribution of BPS products to your laboratory. Publications using this cell line should reference BPS Bioscience, Inc., San Diego
Avoid freeze/thaw cycles.
Scientific Category:
Product Type:
Assay Kit
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