生物活性
JNJ-10229570 (UNII-N9IX402L35) is is a novel melanocortin receptor 1 (MC1R) and melanocortin receptor 5 (MC5R) antagonist, which inhibits the binding of 125I-NDP-α-MSH to cells expressing human MC1R and MC5R with IC50 values of 270 nM and 200 nM, respectively. JNJ-10229570 dose dependently inhibits the production of sebaceous lipids in cultured primary human sebocytes.
In vivo, topical treatment with JNJ-10229570 of human skins transplanted onto SCID mice result in a marked decrease in sebum-specific lipid production, sebaceous gland's size and the expression of the sebaceous differentiation marker epithelial-membrane antigen (EMA). Topical treatment with 0.05% JNJ-10229570 leads to a distinct reduction in both the steady-state and the newly-synthesized sebum-specific lipids, with lesser effects on triglycerides and cholesterol.
化学数据
| 分子量 | 389.47 |
| 分子式 | C22H19N3O2S |
| CAS号 | 524923-88-4 |
| 纯度 | >98% |
| 溶解性（25°C） | DMSO 60 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 | differentiated sebocytes |
| 方法 | Nile red assay. Briefly, differentiated sebocytes grown in 96-well plates were treated with or without 1 uM of JNJ-10229570 (8 repeats, 8 days), washed once, incubated in 1 uM Nile red and 0.001% Pluronic F127 (4 h, RT, dark), and washed again. Fluorescence (485 nm excitation, 565 nm emission) was determined in a SPECTRAmax Gemini-EM plate reader (Molecular Devices, Sunnyvale, CA) by SoftMax Pro program. |
| 浓度 | 1 uM |
| 处理时间 | - |
| 动物实验 |
|---|
| 动物模型 | Human skins transplanted onto SCID mice |
| 配制 | dissolved in a vehicle of ethanol: propylene glycol (7:3) |
| 剂量 | JNJ-10229570 (0.05%) 20 ml/1.5 cm2 |
| 给药处理 | applied onto each skin xenograft once daily, 5 days/week, for 30-34 treatments |
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 | 2.5676 mL | 12.838 mL | 25.6759 mL |
| 5 mM | 0.5135 mL | 2.5676 mL | 5.1352 mL |
| 10 mM | 0.2568 mL | 1.2838 mL | 2.5676 mL |
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