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Amphethinile

CAS No. : 91531-98-5

MCE 站：Amphethinile

产品活性：Amphethinile是一种抗微管蛋白 (anti-tubulin) 剂。 Amphethinile与微管蛋白结合的K_a 值为1.3 μM。

研究领域：Cell Cycle/DNA Damage  |  Cytoskeleton

作用靶点：Microtubule/Tubulin

In Vitro: Amphethinile shows a remarkable similarity to colchicine in terms of its binding to tubulin and inhibition of microtubular assembly. Amphethinile binds strongly to microtubule protein (K_a=1.3 μM). This interaction has been shown to be capable of inhibiting tubulin assembly, but shows no rapid stimulation of disassembly when added to assembled tubulin. The concentration of amphethinile required to inhibit assembly by 50% (12 μM) is very similar to that for colchicine (11 μM). Amphethinile has been shown to be capable of competing for colchicine binding sites but not for those of the vinca alkaloids. Amphethinile can also be shown to stimulate the GTPase activity of tubulin in a manner similar to that observed for combretastatin A4 and 2-methoxy-5-(2',3',4'-trimethoxyphenyl) tropolone (MTPT). Amphethinile has been shown to cause a G2/M phase block in the cell cycle. In addition, this agent has been shown to be equally toxic toward parental and daunorubicin-resistant P388 cells. Whereas resistance in this cell line is associated with decreased drug accumulation in the case of daunorubicin, vincristine and vinblastine, this effect is much less pronounced for amphethinile.

In Vivo: Pharmacokinetic studies in male mice are undertaken. Area under the curve values (AUC), show that levels of 313 μg/L per hour are attained at doses equivalent to the LD₁₀. The alpha half life is 8 min after a bolus intravenous injection. The beta half life is 100 min and relatively independent of dose level.

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