生物活性
LY2109761是一种新型的，选择性的TGF-β receptor type I/II (TβRI/II)双重抑制剂，Ki分别为38 nM和300 nM，对Smad2的磷酸化产生负面影响。LY2109761 处理FG/GLT或L3.6pl/GLT单层细胞生长，没有抗增殖效果，但是显著抑制L3.6pl/GLT细胞低贴壁生长，这种作用存在剂量依赖性，按2 μM 和 20 μM处理，则抑制分别为~33% 和73%, 与 Gemcitabine联用可强增强这种效果。LY2109761(5 μM)阻断TβRI/II激酶活性，完全抑制基础型和TGF-β1刺激的L3.6pl/GLT cells细胞迁移和入侵,显著增强脱离诱导的凋亡，处理8小时，凋亡达 26%，且完全抑制TGF-β诱导的Smad2磷酸化。 1 nM LY2109761通过提高E-钙粘蛋白表达，而显著阻断迁移和入侵，而不会抑制肝癌细胞的粘附。
化学数据
| 分子量 | 441.52 |
| 分子式 | C26H27N5O2 |
| CAS号 | 700874-71-1 |
| 纯度 | 98.19% |
| 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 | Colo357FG/GLT and Colo357L3.6pl/GLT cells |
| 方法 | LY2109761 was dissolved in 100% DMSO at a stock concentration of 10 mmol/L. The concentration of DMSO did not exceed 0.1% in any assay. FG/GLT nonmetastatic pancreatic carcinoma cells (A) and their highly metastatic subclone L3.6pl/GLT pancreatic carcinoma cells were seeded at a density of 1.0 × 103 per well. On the following day, the cells were treated with increasing doses of LY2109761 (0.1, 1, and 10 μmol/L), gemcitabine (0.3, 3,and 30 nmol/L), and their combinations. On day 2, the medium containing drugs was removed, the cells were washed twice with PBS, and fresh medium was added. After 5 d of incubation, the 3-(4,5 dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay was used to obtain relative variable cell numbers. DMSO-treated cells were assigned a value of 100%. Means and 95% confidence intervals of three independent experiments performed in triplicate. |
| 浓度 | 0, 2, 20 μ M |
| 处理时间 | 5 days |
| 动物实验 |
|---|
| 动物模型 | Human Pancreatic Carcinoma Tumors Growing in the Pancreas of Athymic Nude Mice |
| 配制 | dissolved in the SX-1292 oral vehicle (1% sodium carboxymethylcellulose, 0.5% sodium lauryl sulfate, and 0.05% antifoam; Eli Lilly) |
| 剂量 | LY2109761 (50 mg/kg) twice a day p.o. (days 1–5 of each week) |
| 给药处理 | p.o. |
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 | 2.2649 mL | 11.3245 mL | 22.649 mL |
| 5 mM | 0.453 mL | 2.2649 mL | 4.5298 mL |
| 10 mM | 0.2265 mL | 1.1325 mL | 2.2649 mL |
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