生物活性
TGX-221是一种特异性的p110β抑制剂，IC50为5 nM，作用于p110β比作用于p110α选择性高1000倍。使用重组p85/p110，进行体外PI3K实验，测定TGX-221作用于不同亚型的活性，TGX-221有效且高度选择性作用p110β，作用于PI3K p110β和PI3K p110δ时, IC50 分别为8.5和211 nM。而且,TGX-221作用于J774.2巨噬细胞，局部降低胰岛素诱导的PKB在Ser473位点磷酸化。 TGX-221作用于体外循环(ECC)模型，抑制血小板-ECC相互作用, 血小板凝聚，和血小板-粒细胞结合。
化学数据
| 分子量 | 364.4 |
| 分子式 | C21H24N4O2 |
| CAS号 | 663619-89-4 |
| 纯度 | 99.57% |
| 溶解性（25°C） | DMSO 18 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 | BT-474 and HCT-116 cell lines |
| 方法 | For measurement of proliferation, cells were seeded in triplicate at 2×103cells/well in 96-well culture plates and incubated overnight to allow cell attachment. The cells were incubated with the TGX221-loaded PHA nanoparticles, empty PHA nanoparticles, or free TGX221 for 24, 48, and 72 h. At designated time intervals, cells were quantified by a crystal violet staining-based colorimetric assay (Kueng et al. 1989). Briefly, cells were fixed by addition of 100 μl of 2.5% glutaraldehyde solution andincubated at room temperature for 30 min. Plates were
washed three times by submersion in PBS solution. Plates were air-dried and stained by addition of 100 μl of 0.1% solution of crystal violet dissolved in deionized water and incubated for 20 min at room temperature, excess dye was removed by extensive washing with deionized water, and plates were air-dried prior to bound dye solubilization in 100 μ1 of 10% acetic acid. The optical density of dye extracts was measured directly in plates using a microplate reader (Bio-Rad Laboratories, Inc., UK) at 570 nm. |
| 浓度 | 0.2, 2 and 20 μ M |
| 处理时间 | 24, 48, and 72 h |
| 动物实验 |
|---|
| 动物模型 | prostate cancer LAPC-4, LNCaP, 22RV1 and C4-2 cellsxenograft tumor in nude mice |
| 配制 | dissolved in polypropylene glycol (PPG) |
| 剂量 | 100 mg/kg twice a week for 3 weeks |
| 给药处理 | tail vein 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 |
|---|
| 1 mM | 2.7442 mL | 13.7212 mL | 27.4424 mL |
| 5 mM | 0.5488 mL | 2.7442 mL | 5.4885 mL |
| 10 mM | 0.2744 mL | 1.3721 mL | 2.7442 mL |
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