Immunomodulator (S1P lyase inhibition) / THI was identified as a biologically active impurity in caramel food coloring.1 It is a potent inhibitor of sphingosine-1-phosphate (S1P) lyase.2 It disrupts lymphocyte egress from lymphoid tissue by interfering with S1P gradients.3,4 The novel immunomodulatory activity of THI and its biochemical mechanism may represent a new target for the development of new generation of immunosuppressants.5
Biochemicals & reagents
94944-70-4
1-[5-[(1R,2S,3R)-1,2,3,4-tetrahydroxybutyl]-1H-imidazol-2-yl]-ethanone
1) MacKenzie et al. (1992), Toxicity Studies of Caramel Colour III and 2-Acetyl-4(5)-Tetrahydroxybutylimidazole in F344 rats; Food Chem.Toxicol. 30 417 2) Ohtoyo et al. (2015), Sphingosine 1-phosphate lyase inhibition by 2-acetyl-4-(tetrahydroxybutyl)imidazole (THI) under conditions of vitamin B6 deficiency; Mol.Cell Biochem. 400 125 3) Gugasyan et al. (1998), Emigration of mature T cells from the thymus is inhibited by the imidazole-based compound 2-acetyl-4-tetrahydroxybutylimidazole; Immunology 93 398 4) Schwab et al. (2005), Lymphocyte sequestration through S1P lyase inhibition and disruption of S1P gradients; Science 309 1735 5) Bradbury et al. (1997), The immunomodulatory compound 2-acetyl-4-tetrahydroxybutyl imidazole causes sequestration of lymphocytes in non-lymphoid tissue; Immunol.Cell Biol. 75 497
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PATHWAY: Sphingolipid metabolism; TNF; Lipid signaling; Fatty acid metabolism; Cytokine -- RESEARCH AREA: Immunology -- DISEASE AREA: Inflammation; Cancer