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| | 1-METHYL-D-TRYPTOPHAN Basic information |
| | 1-METHYL-D-TRYPTOPHAN Chemical Properties |
| Melting point | 242-245 °C(lit.) | | alpha | 12.4o (C = 2 IN ACETIC ACID) | | Boiling point | 429.3±35.0 °C(Predicted) | | density | 1.28 | | storage temp. | Keep in dark place,Sealed in dry,Room Temperature | | solubility | Soluble in DMSO (greater than 25 mg/ml). | | form | White to light brown crystalline powder. | | pka | 2.26±0.10(Predicted) | | color | White | | optical activity | [α]22/D +12.4°, c = 2 in acetic acid | | Water Solubility | Soluble to 5 mM in water with gentle warming | | Stability: | Stable for 1 year from date of purchase as supplied. Solutions in DMSO may be stored at -20° for up to 1 month. | | InChIKey | ZADWXFSZEAPBJS-SNVBAGLBSA-N |
| | 1-METHYL-D-TRYPTOPHAN Usage And Synthesis |
| Description | Indoleamine 2,3-dioxygenase (IDO) metabolizes tryptophan to kynurenine, leading to the production of NAD+ via the kynurenine pathway. The overexpression of IDO in tumors and tumor-draining lymph nodes induces immune tolerance and enhances tumor growth in vivo. 1-methyl-D-Tryptophan is an inhibitor of IDO (IC50 = 7 μM) that is effective in vivo. In mice, 1-methyl-D-tryptophan prevents T-cell anergy triggered by dendritic cells overexpressing IDO. It augments the antitumor and antiviral immunoresponse of CD8+ T-cells and reduces tumor volume in mice with xenografts overexpressing IDO. 1-methyl-D-Tryptophan, in combination with chemotherapy, causes regression of tumors and prolongs survival. Surprisingly, 1-methyl-D-tryptophan induces the expression of IDO in human ovarian carcinoma SKOV3 cells in culture. | | Uses | Indoleamine 2,3-dioxygenase (IDO) metabolizes tryptophan to kynurenine, leading to the production of NAD+ via the kynurenine pathway. The overexpression of IDO in tumors and tumor-draining lymph nodes induces immune tolerance and enhances tumor growth in vivo. 1-methyl-D-Tryptophan is an inhibitor of IDO (IC50 = 7 μM) that is effective in vivo. In mice, 1-methyl-D-tryptophan prevents T-cell anergy triggered by dendritic cells overexpressing IDO. It augments the antitumor and antiviral immunoresponse of CD8+ T-cells and reduces tumor volume in mice with xenografts overexpressing IDO. 1-methyl-D-Tryptophan, in combination with chemotherapy, causes regression of tumors and prolongs survival. Surprisingly, 1-methyl-D-tryptophan induces the expression of IDO in human ovarian carcinoma SKOV3 cells in culture. | | Uses | 1-Methyl-D-tryptophan is used in biological studies to determine the effect of IDO2 enzyme (indoleamine-(2,3)-dioxygenase) activity and IDO2-mediated arrest of human T cell proliferation. It reverses IDO-mediated immune suppression | | storage | Store at -20°C | | References | 1) Hou?et al. (2007),?Inhibition of indoleamine 2,3-dioxygenase in dendritic cells by stereoisomers of 1-methyl-tryptophan correlates with antitumor responses; Cancer Res.,?67?792
2) Soliman?et al. (2010),?Indoleamine 2,3-dioxygenase: is it an immune suppressor?; Cancer J.,?16?354
3) Friberg?et al. (2002),?Indoleamine 2,3-dioxygenase contributes to tumor cell evasion of T-cell mediated rejection; Int. J. Cancer,?101?151
4) Metz?et al. (2012),?IDO inhibits a tryptophan sufficiency signal that stimulates mTOR; Oncoimmunol.,?1?1460 |
| | 1-METHYL-D-TRYPTOPHAN Preparation Products And Raw materials |
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