生物活性
CHIR-99021 (CT99021)是一种GSK-3α和GSK-3β抑制剂, IC50分别为10 nM and 6.7 nM。CHIR-99021作用于GSK-3比作用于其最接近的同系物CDC2和ERK2,及其他蛋白激酶选择性高500倍。此外,CHIR-99021只与一组22种药理相关的受体微弱结合,且对一组23种非激酶的酶几乎没有抑制活性。CHIR-99021作用于表达胰岛素受体的CHO-IR细胞,诱导糖原合成酶(GS)激活,EC50为0.763 μM。
化学数据
分子量 | 465.34 |
分子式 | C22H18Cl2N8 |
CAS号 | 252917-06-9 |
纯度 | 99.66% |
溶解性(25°C) | DMSO 16 mg/mL |
储存和运输条件 | 固体粉末: -20°C 冷藏长期储存 常温运输及临时存放 |
实验操作 来自于公开的文献,仅供相同实验参考(如实验材料、目的不同,请参考其他文献)
细胞实验 |
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细胞系 | J1 mESCs or F9 mEC cells |
方法 | Immunofluorescence staining The expression and subcellular localisation of β-catenin in J1 mESCs treated with 1 μM BIO or 3 μM CHIR for 24 h was detected by immunofluorescence staining. Nuclei were stained with DAPI. J1 mESCs or F9 mEC cells were fixed and permeabilized using immunostaining fixation buffer and then blocked in blocking buffer (Beyotime Institute of Biotechnology). Subsequently, cells were incubated with the indicated primary antibody overnight at 4°C, followed by three washes with washing buffer (Beyotime Institute of Biotechnology) for 5 min and then incubation with an Alexa Fluor 555-conjugated secondary antibody for 2 h at room temperature. Nuclei were stained with DAPI. Cells were photographed under an inverted fluorescence microscope (Nikon, Tokyo, Japan). |
浓度 | 3μM |
处理时间 | 24h |
动物实验 |
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动物模型 | Akita type 1 diabetic mice and wild-type mice |
配制 | DMSO |
剂量 | 50 mg/kg, daily |
给药处理 | Intraperitoneal injection |
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 | 大鼠 | 兔 | 豚鼠 | 仓鼠 | 狗 |
重量 (kg) | 0.02 | 0.15 | 1.8 | 0.4 | 0.08 | 10 |
体表面积 (m2) | 0.007 | 0.025 | 0.15 | 0.05 | 0.02 | 0.5 |
Km系数 | 3 | 6 | 12 | 8 | 5 | 20 |
动物 A (mg/kg) = 动物 B (mg/kg) × | 动物 B的Km系数 |
动物 A的Km系数 |
例如,依据体表面积折算法,将化合物用于小鼠的剂量20 mg/kg 换算成大鼠的剂量,需要将20 mg/kg 乘以小鼠的Km系数(3),再除以大鼠的Km系数(6),得到化合物用于大鼠的等效剂量为10 mg/kg。
储备液配制
以下数据基于产品分子量,对于特殊产品,请参照COA中的储备液配制条件和说明进行操作。
Concentration / Solvent Volume / Mass | 1 mg | 5 mg | 10 mg |
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1 mM | 2.149 mL | 10.7448 mL | 21.4897 mL |
5 mM | 0.4298 mL | 2.149 mL | 4.2979 mL |
10 mM | 0.2149 mL | 1.0745 mL | 2.149 mL |