Product Introduction
Bioactivity


英文名: L-Eflornithine monohydrochloride

描述: L-Eflornithine is an irreversible ornithine decarboxylase (ODC) inhibitor with a KD of 1.3±0.3 μM, and a Kinact of 0.15±0.03 min-1. L-Eflornithine monohydrochloride (L-DFMO monohydrochloride) is an enantiomer of Eflornithine.

体外活性: Treatment of human colon tumour-derived HCT116 cells with either L-Eflornithine or D- Eflornithine decreases the cellular polyamine contents in a concentration-dependent manner. The enantiomers display different potencies in vitro, with the L-enantiomer having up to a 20-fold higher affinity for the target enzyme ornithine decarboxylase. ?The L-Eflornithine also appears to be more potent in cultured T.brucei gambiense parasites.Eflornithine (D/L-DFMO) is an inhibitor of ODC, the first enzyme in eukaryotic polyamine biosynthesis.?Both enantiomers of Eflornithine (DFMO) irreversibly inactivate ODC.?Both Eflornithine enantiomers (L-Eflornithine and D-Eflornithine) suppress ODC activity in a time- and concentration-dependent manner.?The inhibitor dissociation constant (KD) values for the formation of enzyme-inhibitor complexes are 28.3±3.4, 1.3±0.3 and 2.2±0.4 μM respectively for D-Eflornithine, L-Eflornithine and Eflornithine.?The inhibitor inactivation constants (Kinact) for the irreversible step were 0.25±0.03, 0.15±0.03 and 0.15±0.03 min-1 respectively for D-Eflornithine, L-Eflornithine and Eflornithine.

体内活性: The typical oral clearances of L-Eflornithine and D-eflornithine are 17.4 and 8.23 liters/h, respectively.The more potent L-Eflornithine is present at much lower concentrations in both plasma and cerebrospinal fluid (CSF) than those of the D-Eflornithine.?The plasma concentrations of L-Eflornithine are on average 52% of the D-enantiomer concentrations.

存储条件: Powder: -20°C for 3 years | In solvent: -80°C for 1 year

关键字: L-a-difluoromethylornithine Monohydrochloride | L-Eflornithine | L-RMI-71782 | L-RMI71782 Monohydrochloride | L-RMI 71782 | L-RMI-71782 Monohydrochloride | L-a-difluoromethylornithine | LEflornithine monohydrochloride | L-DFMO Monohydrochloride | L-RMI71782 | L-α-difluoromethylornithine Monohydrochloride | L-Eflornithine Monohydrochloride | L-RMI 71782 Monohydrochloride | L Eflornithine monohydrochloride | L-alpha-difluoromethylornithine Monohydrochloride | L-α-difluoromethylornithine | L-alpha-difluoromethylornithine | L-DFMO