生物活性: |
靶点:DNA/RNA Synthesis 通路:Cell Cycle;DNA Damage/DNA Repair 背景说明:Cytarabine可用通过抑制细胞DNA的合成,干扰细胞的增殖。Cytarabine对处于S期增殖期细胞的作用最敏感,对抑制RNA及蛋白质合成的作用较弱。 生物活性:Cytarabine是一种用于治疗急性髓性白血病的化疗药物,抑制DNA 合成的IC50为16 nM。[1-4] In Vitro:Cytarabine被磷酸化为三磷酸盐形式(Ara-CTP),涉及脱氧胞苷激酶(dCK),其与dCTP竞争结合到DNA中,然后通过抑制DNA和RNA聚合酶的功能阻断DNA合成。与其他急性髓性白血病(AML)细胞相比,Cytarabine对野生型CCRF-CEM细胞显示出更高的生长抑制活性,IC50为16 nM [1]。Cytarabine明显诱导大鼠交感神经元凋亡10μM,其中100μM显示最高毒性,并在84小时内杀死超过80%的神经元,包括线粒体细胞色素c的释放和caspase-3的激活,以及通过p53敲低可以减弱毒性,并通过bax缺失延迟[2]。 In Vivo:Cytarabine(250 mg/kg)也会导致胎盘生长迟缓,并增加胎盘迷路细胞凋亡,在孕期Slc:Wistar大鼠的胎盘迷路区,从治疗后3小时开始增加,并在恢复到对照水平前6小时达到峰值。 48小时,p53蛋白显著增强,p53转录靶基因如p21,cyclinG1和fas和caspase-3活性[3]。Cytarabine对急性白血病非常有效,导致Cytarabine的G1/S阻滞和同步化,并以弱剂量相关的方式增加白血病布朗挪威大鼠的存活时间,表明使用更高剂量的Cytarabine无助于它对人体的抗白血病作用[4]。 动物实验:怀孕大鼠在妊娠第13天(GD13)腹膜内(ip)注射250mg/kgCytarabine。在本实验条件下,围产儿胎儿先天畸形和生长迟缓检出率较高,但胎儿死亡率并未明显增加。在处理后1,3,6,9,12,24和48小时,在乙醚麻醉下通过心脏穿刺杀死6个水坝,并收集胎盘。作为对照,在GD13上腹膜内注射6只怀孕的大鼠,并在与Cytarabine处理组相同的时间点处死。 激酶实验:在无水乙醇中制备Cytarabine的储备溶液,并制备Cytarabine的连续稀释液。将CCRF-CEM细胞悬浮于补充有10%FBS,0.1%庆大霉素和1%丙酮酸钠的RPMI培养基中。将细胞悬浮在它们各自的培养基中,得到10mL体积的细胞悬浮液,最终密度为3-6×10 4个细胞/ mL。将适量的Cytarabine溶液转移至细胞悬浮液中,并继续培养72小时。将细胞离心并重新悬浮于不含Cytarabine的新培养基中,并测定最终细胞计数。通过细胞计数与Cytarabine浓度的S形曲线拟合分析数据,结果表示为IC 50(抑制细胞生长的Cytarabine浓度至对照值的50%)。 数据来源文献:[1]. Tobias, S.C. and R.F. Borch, Synthesis and biological evaluation of a cytarabine phosphoramidate prodrug. Mol Pharm, 2004. 1(2): p. 112-6. [2]. Besirli, C.G., et al. Cytosine arabinoside rapidly activates Bax-dependent apoptosis and a delayed Bax-independent death pathway in sympathetic neurons. Cell Death Differ, 2003. 10(9): p. 1045-58. [3]. Yamauchi, H., et al., Involvement of p53 in 1-beta-D-arabinofuranosylcytosine-induced trophoblastic cell apoptosis and impaired proliferation in rat placenta. Biol Reprod, 2004. 70(6): p. 1762-7. [4]. Richel, D.J., et al., Comparison of the antileukaemic activity of 5 aza-2-deoxycytidine and arabinofuranosyl-cytosine in rats with myelocytic leukaemia. Br J Cancer, 1988. 58(6): p. 730-3
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其它标识: |
EC:EINECS 205-705-9 MDL:MFCD00066487 SMILES:O=C1N=C(N)C=CN1[C@H]2[C@H]([C@@H]([C@@H](CO)O2)O)O InChIKey:UHDGCWIWMRVCDJ-CCXZUQQUSA-N InChI:InChI=1S/C9H13N3O5/c10-5-1-2-12(9(16)11-5)8-7(15)6(14)4(3-13)17-8/h1-2,4,6-8,13-15H,3H2,(H2,10,11,16)/t4-,6-,7+,8-/m1/s1 PubChem CID:6253
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基本信息: |
CAS:147-94-4 中文名称:阿糖胞苷 英文名称:Cytarabine 别名:胞嘧啶-β-D-呋喃阿拉伯糖苷;Ara-C;Cytosine β-D-arabinofuranoside;Arabinocytidine;Cytosine Arabinoside 分子式:C9H13N3O5 分子量:243.22 规格:50mg ; 100mg ; 10mM*1mL in Water ; 500mg 溶解性:Soluble in Water ≥10mg/mL 纯度:HPLC≥98% 外观(性状):White to off-white Solid 储存条件:Powder:2-8℃,2 years;Insolvent(母液):-20℃,6 months;-80℃,1 year
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靶点: |
DNA/RNA Synthesis |
产品详情
使用本产品的案例(仅供参考)
In Vitro
Cell(K562 cells;0.1 ng/mL cytarabine;5d)
K562 cells were cultured in RPMI-1640 medium containing 10% fetal bovine serum and 1% penicillin and streptomycin. K562 cells were differentiated by erythroid induction at an initial concentration of 1 × 105 /mL cells. A final concentration of 40 μM hemin (Solarbio, China) and 0.1 ng/mL cytarabine (Solarbio, China) were added to the medium to induce erythroid differentiation, and the cells were placed at 37°C under hypoxic (5% CO2, 5% O2), CoCl (200 μM) and normoxic (5% CO2, 20% O2) conditions for 5 days.
来源文献:Gao Z, Li Z, Li X, Xiao J, Li C. Regulation of erythroid differentiation in K562 cells by the EPAS1-IRS2 axis under hypoxic conditions. Front Cell Dev Biol. 2023 Jun 1;11:1161541. doi: 10.3389/fcell.2023.1161541. PMID: 37325570; PMCID: PMC10267359.
In Vivo
Mice(50~200 mg/kgAra-C,腹腔注射,7d)
After a week to adapt to the facility, mice were randomly divided into four groups (n = 10 mice per group) for intestinal pathology and survival analysis in the selection of the optimal doses of Ara-C. Ara-C and AS-IV were dissolved by 0.9% saline and dimethyl sulfoxide(DMSO) respectively. The control group was injected intraperitoneally with 0.9% saline (5 ml/kg) and the Ara-C group was intraperitoneally injected with different doses of Ara-C (50 mg/kg, 100 mg/kg, 200 mg/kg) for 7 days. Mice were killed at day 10.
来源文献:Li JJ, Li YL, Chu W, Li GQ, Zhang M, Dong JJ, Li L, Li CH, Zhang JB, Li JW, Jin XJ, Liu YQ. Astragaloside IV alleviates cytarabine-induced intestinal mucositis by remodeling macrophage polarization through AKT signaling. Phytomedicine. 2023 Jan;109:154605. doi: 10.1016/j.phymed.2022.154605. Epub 2022 Dec 15. PMID: 36610133.