生物活性
A-769662 is a potent, reversible AMP-activated protein kinase (AMPK) activator with an EC50 of 0.8 μM.A-769662 displays selectivity towards β1 subunit-containing heterotrimers. A-769662 not only inhibits fatty acid synthesis with an IC50 of 3.2 μM but also decreases plasma glucose and triglyceride levels in vivo. The addition of A-769662 to mouse embryonic fibroblasts or primary mouse hepatocytes stimulates phosphorylation of acetyl-CoA carboxylase (ACC), effects that are completely abolished in AMPK-alpha1 (-/-)alpha2 (-/-) cells but not in TAK1 (-/-) mouse embryonic fibroblasts. Phosphorylation of AMPK and ACC in response to A-769662 is also abolished in isolated mouse skeletal muscle lacking LKB1, a major upstream kinase for AMPK in this tissue. A-769662 directly prevents the alpha (1)-isoform of the Na (+)-K (+)-ATPase which is purified from rat and human kidney cells in vitro with IC50 of 57 μM and 220 μM, respectively. Suppression of the Na (+)-K (+)-ATPase by 100 μM ouabain decreases sodium pump activity and cell surface abundance, similar to the effect of A769662 (A 769662; A-769662), without influencing the phosphorylation of AMPK and ACC.
化学数据
| 分子量 | 360.39 |
| 分子式 | C20H12N2O3S |
| CAS号 | 844499-71-4 |
| 纯度 | 98.79% |
| 溶解性（25°C） | DMSO 35 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 |
|---|
| 细胞系 | MEF cells |
| 方法 | Treating or not cell viability of MEF cells with A-769662 is performed as follows: harvesting cells by trypsinization and incubating with 0.5 mg/mL RNase and 50 μg/mL propidium iodine at room temperature in the dark; analyzing cell viability by flow cytometry using a FACScanto flow cytometer, using an excitation laser at 488 nm and a propidium iodine fluorescence detection at 600 nm. Cells are harvested by trypsinization, collected by centrifugation, washed in PBS and fixed overnight in 80% ethanol at -20 °C to determine the proportion of cells in each phase of the cell cycle. Subsequently, these fixed cells are centrifuged to remove the fixative and incubated for 20 minutes in the dark at room temperature in PBS containing 0.5 mg/mL RNase and 50 μg/mL propidium iodine. Flow cytometry analysis is performed as above. Using the MODFIT progra to determine the proportion of cells in G1, S, and G2 is determined . Using a camera to take Cell culture pictures at the indicated times coupled to an inverted microscope with a 20 × objective. |
| 浓度 | 300 μM |
| 处理时间 | 24 hours |
| 动物实验 |
|---|
| 动物模型 | Sprague Dawley rats |
| 配制 | A-769662 is dissolved in DMSO |
| 剂量 | 30 mg/kg |
| 给药处理 | Administered via i.p. |
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 |
|---|
| 1 mM | 2.7748 mL | 13.8739 mL | 27.7477 mL |
| 5 mM | 0.555 mL | 2.7748 mL | 5.5495 mL |
| 10 mM | 0.2775 mL | 1.3874 mL | 2.7748 mL |
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