生物活性
PKI-402 is a selective, reversible, ATP-competitive, equipotent class I phosphatidylinositol 3-kinases (PI3K) inhibitor with IC50 of 1, 7, 16 and 14 nM for PI3Kα, PI3Kβ, PI3Kγ and PI3Kδ, respectively. PKI-402 gave rise to in vitro growth inhibition of human tumor cell lines derived from breast, brain (glioma), pancreas, and non small cell lung cancer (NSCLC) tissues. In many cases IC50 values were <100 nM. In vitro, PKI-402 suppressed phosphorylation of PI3K and mTOR effect or proteins, particularly p-Akt at threonine308 (T308), at concentrations that closely matched those that inhibited tumor cell growth. In MDA361, a breast tumor line with elevated levels of Her2 receptor, and mutant PI3K- (E545K), 30 nM PKI-402 triggered cleaved PARP, a marker for apoptosis. In vivo, PKI-402 revealed anti-tumor activity when administered by IV route in glioma (U87MG, PTEN), NSCLC (A549; K-Ras, STK11), and breast (MDA361: Her2+, PIK3CA [E545K]) xenograft models. At 25, 50, and 100 mg/kg PKI-402 caused regression of MDA361 tumors. PKI-402 effect was most pronounced at 100 mg/kg (daily for 5 days, 1 round),which decreased an initial tumor volume of 260 mm3 to 129 mm3, and inhibited tumor re-growth for 70 days. Tumor re-growth occurred between days 16-20 when PKI-402 was administered at 25and 50 mg/kg (dx5, 2 rounds). In MDA-MB-361 [breast: Her2 (+) and PIK3CA mutant (E545K)], 30 nM PKI-402 induced cleaved poly (ADP-ribose) polymerase (PARP), a marker for apoptosis.
化学数据
| 分子量 | 570.65 |
| 分子式 | C29H34N10O3 |
| CAS号 | 1173204-81-3 |
| 纯度 | >98% |
| 溶解性（25°C） | DMSO |
| 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 | MDA-MB-361, MDA-MB-468, T47D, MCF7, BT474, HT29, HCT116, DLD1, U87MG, H157, NCI-H460, A549, NCI-H1975, NCI-H1650, NCIH2170, KB, 786-0, A498, MIA-PaCa-2, and PC3 |
| 方法 | Determine cell growth inhibition using the CellTiter 96 Aqueous nonradioactive cell proliferation assay. This homogeneous colorimetric method determined the number of viable cells in proliferation assays. Carry out the assay in 96-well format, with cell number numbers per well being adjusted on the basis of growth characteristics of the various cell lines used. After 72 hours of PKI-402 exposure using a Victor2 V (Wallac) model 1420 multilabel HTS counter, quantify assay end point data . |
| 浓度 | Dissolved in DMSO, final concentrations ~3 μM |
| 处理时间 | 72 hours |
| 动物实验 |
|---|
| 动物模型 | Female nude mice injected subcutaneously with MDA-361, U87MG, or A549 cells |
| 配制 | Dissolved in 0.5% methylcellulose and 0.4% polysorbate 80 (Tween-80) |
| 剂量 | ~100 mg/kg/day |
| 给药处理 | Administered by i.v. route |
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 | 1.7524 mL | 8.7619 mL | 17.5239 mL |
| 5 mM | 0.3505 mL | 1.7524 mL | 3.5048 mL |
| 10 mM | 0.1752 mL | 0.8762 mL | 1.7524 mL |
m.cnreagent.com