生物活性
SB203580是一种p38 MAPK抑制剂，IC50为0.3-0.5 μM，与SAPK3(106T)和SAPK4(106T)相比选择性低10倍，且抑制PKB磷酸化，IC50为3-5 μM。SB203580作用于人类T细胞,鼠CT6 T细胞, 或BAF F7 B细胞，抑制IL-2诱导的增殖，IC50为3-5 μM。SB203580也抑制IL-2诱导的p70S6K激活, IC50 > 10 μM。SB203580也抑制PDK1活性，IC50为3-10 μM，这种抑制存在剂量依赖性。
化学数据
| 分子量 | 377.43 |
| 分子式 | C21H16FN3OS |
| CAS号 | 152121-47-6 |
| 纯度 | 99.97% |
| 溶解性（25°C） | DMSO 43 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 | CT6 cells,BA/F3 cells and PBMC/T cells |
| 方法 | 2–5 × 106 rested CT6 cells were resuspended in 2 ml of RPMI, 5% fetal calf serum and preincubated with inhibitors or vehicle control as indicated in figure legends. Cells were then stimulated with 20 ng/ml recombinant human IL-2 for 5 min at 37 °C and pelleted in a minifuge for 30 s, medium was aspirated, and the pellet was lysed in the appropriate buffer. BA/F3 cells stably expressing deletion mutants of IL-2 receptor β chain (a generous gift from Professor T. Taniguchi, Tokyo, Japan) were maintained in glutamine containing RPMI further supplemented with 5% fetal calf serum and 0.2 μg/ml G418 (Calbiochem-Novabiochem) as described previously. Human peripheral blood mononuclear cells were prepared from buffy coat leukophoresis residues (North London Blood Transfusion Service, Colindale, London UK) and activated with 50 ng/ml OKT3 for 48 h. The cells were then washed extensively, rested overnight, and washed again before activating with IL-2; such cell preparations were >90% T cells . Cellular proliferation assays were performed by measurement of [3H]thymidine incorporation as described previously. |
| 浓度 | 0~30 μm |
| 处理时间 | 24 h |
| 动物实验 |
|---|
| 动物模型 | Systemic lupus erythematosus (SLE) model (female MRL/lpr mice and female C57BL/6 mice) |
| 配制 | Dissolved in drinking water (250 μM) |
| 剂量 | 0.1 M/day |
| 给药处理 | orally |
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 | 2.6495 mL | 13.2475 mL | 26.495 mL |
| 5 mM | 0.5299 mL | 2.6495 mL | 5.299 mL |
| 10 mM | 0.2649 mL | 1.3247 mL | 2.6495 mL |
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