Gefitinib (ZD1839)GFR酪氨酸激酶和Akt磷酸化抑制剂生物活性CAS号184475-35-2

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Gefitinib 目录号M1749
化学数据
分子量 分子式 CAS号 储存条件 446.90 C22H24ClFN4O3 184475-35-2 3年 -20°C 粉末状 溶解性(25°C) DMSO 89 mg/mL Water <1 mg/mL Ethanol 4 mg/mL
生物活性
Gefitinib (ZD1839)是一种EGFR酪氨酸激酶和Akt磷酸化抑制剂,作用于NR6wtEGFR和NR6W细胞中的Tyr1173, Tyr992, Tyr1173和Tyr992时,IC50分别为37 nM, 37nM, 26 nM和57 nM。Gefitinib 作用于高和低表达EGFR的细胞系,包括NR6, NR6M 和 NR6W 细胞系,有效抑制EGFR上全部酪氨酸磷酸化位点。磷酸化 位点 Tyr1173和Tyr992敏感性较低,需要高浓度Gefitinib才能抑制。Gefitinib作用于NR6W细胞,高效阻断PLC-γ磷酸化, IC50为27nM。
实验操作 来自于公开的文献,仅供参考
细胞实验 细胞系 方法 MDA-361, SKBR-3, MDA-453 and BT-474 cells Monolayer Growth and Anchorage-independent Growth Assays. For monolayer growth, cells were seeded at a density of 3–4 104 cells in 12-well plates. Twenty-four h later, ZD1839 was added to the cells. Fresh medium ZD1839 was replaced on day 3. On day 5, cells were harvested by trypsinization and counted with a Zeiss Coulter Counter (Beckman Coulter, Miami, FL). Colony-forming assays in soft agarose were performed as described previously (30). Tumor cell colonies measuring 50 m were counted after 7 days using an Omnicon 3800 colony counter and Tumor Colony Analysis V2.IIA software (Imaging Products International, Inc.). 浓度 处理时间 0.1–10 μ M 4 days
动物实验 动物模型 配制 剂量 给药处理 BT-474 cells Xenograft in Athymic Mice 0.05% Tween 80 200 mg/kg/day for 28 days oral gavage
不同实验动物依据体表面积的等效剂量转换表(数据来源于FDA指南)
小鼠 重量 (kg) 体表面积 (m2) Km 系数 0.02 0.007 3 动物 B的Km系数 动物 A的Km系数
大鼠 0.15 0.025 6
兔 1.8 0.15 12
豚鼠 0.4 0.05 8
仓鼠 0.08 0.02 5
狗 10 0.5 20
动物 A (mg/kg) = 动物 B (mg/kg) ×
例如,依据体表面积折算法,将白藜芦醇用于小鼠的剂量22.4 mg/kg 换算成大鼠的剂量,需要将22.4 mg/kg 乘以小鼠的Km系数(3),再除以大鼠的Km系数(6), 得到白藜芦醇用于大鼠的等效剂量为11.2 mg/kg。
参考文献
Method development and validation for the quantification of dasatinib, erlotinib, gefitinib, imatinib, lapatinib, nilotinib, sorafenib and sunitinib in human plasma by liquid chromatography coupled with tandem mass spectrometry. Lankheet NA et al. Biomed Chromatogr. 2012 Sep 17. PMID: 22987603. A pilot study for the early assessment of the effects of BMS-754807 plus gefitinib in an H292 tumor model by [(18)F]fluorothymidine-positron emission tomography.

Lee SJ et al. Invest New Drugs. 2012 Sep 18. PMID: 22987020. Gefitinib-Induced Paronychia: Response to Autologous Platelet-Rich Plasma. Kwon SH et al. Arch Dermatol. 2012 Sep 17;1-4. PMID: 22986691. Polymorphisms to predict outcome to the tyrosine kinase inhibitors gefitinib, erlotinib, sorafenib and sunitinib. Erdem L et al. Curr Top Med Chem. 2012 Sep 11. PMID: 22978339.

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