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CAS No. : 69-74-9
MCE 国际站:Cytarabine hydrochloride
产品活性:Cytarabine hydrochloride 是一种核苷类似物,可引起 S 期细胞周期停滞并抑制 DNA聚合酶。Cytarabine 抑制 DNA 合成的 IC50 为 16 nM。Cytarabine hydrochloride 对 HSV 具有抗病毒作用。
研究领域:Cell Cycle/DNA Damage | Anti-infection | Autophagy
作用靶点:DNA/RNA Synthesis | Nucleoside Antimetabolite/Analog | HSV | Autophagy
In Vitro: Cytarabine is phosphorylated into a triphosphate form (Ara-CTP) involving deoxycytidine kinase (dCK), which competes with dCTP for incorporation into DNA, and then blocks DNA synthesis by inhibiting the function of DNA and RNA polymerases. Cytarabine displays a higher growth inhibitory activity towards wild-type CCRF-CEM cells compared to other acute myelogenous leukemia (AML) cells with IC50 of 16 nM. Cytarabine apparently induces apoptosis of rat sympathetic neurons at 10 μM, of which 100 μM shows the highest toxicity and kills over 80% of the neurons by 84 hours, involving the release of mitochondrial cytochrome-c and the activation of caspase-3, and the toxicity can be attenuated by p53 knockdown and delayed by bax deletion.
In Vivo: Cytarabine (250 mg/kg) also causes placental growth retardation and increases placental trophoblastic cells apoptosis in the placental labyrinth zone of the pregnant Slc:Wistar rats, which increases from 3 hour after the treatment and peaks at 6 hour before returning to control levels at 48 hour, with remarkably enhanced p53 protein, p53 trancriptional target genes such as p21, cyclinG1 and fas and caspase-3 activity. Cytarabine is highly effective against acute leukaemias, which causes the chCytarabineteristic G1/S blockage and synchronization, and increases the survival time for leukaemic Brown Norway rats in a weak dose-related fashion indicating that the use of higher dosages of Cytarabine does not contribute to its antileukaemic effectiveness in man.
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货号: HY-13605A
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