Powder: -20°C for 3 years | In solvent: -80°C for 1 year
Josamycin (EN-141) 是一种大环内酯类抗生素,对多种病原体有抗菌活性。它对核糖体的解离常数Kd 为 5.5 nM。
规格 | 价格/CNY | 货期 | 数量 | |
---|---|---|---|---|
10 mg | ¥ 258 | 现货 | ||
25 mg | ¥ 413 | 现货 | ||
50 mg | ¥ 756 | 现货 | ||
100 mg | ¥ 1,350 | 现货 | ||
500 mg | ¥ 3,380 | 现货 | ||
1 mL * 10 mM (in DMSO) | ¥ 357 | 现货 |
产品描述 | Josamycin (EN-141) is a macrolide antibiotic exhibiting antimicrobial activity. The dissociation constant Kd from ribosome for Josamycin is 5.5 nM. |
靶点活性 | Ribosome:5.5 nM (Kd) |
体外活性 | Josamycin significantly attenuated NO production elicited by P. intermedia LPS as well as induction of iNOS protein and mRNA in RAW264.7 cells. While the release of IL-1β from cells stimulated by LPS was suppressed in the presence of josamycin, josamycin failed to reduce the degree of IL-1β mRNA expression. Josamycin did not reduce the stability of IL-1β mRNA induced by P. intermedia LPS, at the same time josamycin also failed to suppress the LPS-induced intracellular IL-1β expression. Josamycin augmented HO-1 induction in cells exposed to P. intermedia LPS, and SnPP, an inhibitor of HO-1 activity, reversed the suppressive impact of josamycin upon NO generation induced by LPS. Josamycin diminished NF-κB transcriptional activity induced by P. intermedia LPS. Further, josamycin enhanced SOCS1 mRNA level in cells activated with LPS[1]. |
体内活性 | Josamycin (0.1%) was topically administered to NC/Nga mice with AD-like skin lesions induced by 2, 4, 6-trinitrochlorobenzene (TNCB). The therapeutic effects of josamycin were assessed by measurement of the skin severity scores, histological changes in the lesioned skin, serum levels of total IgE, and expression of interferon (IFN)-γ and interleukin (IL)-4 in lymph nodes and skin lesions[2]. |
细胞实验 | LPS was purified by employing phenol-water extraction protocol. Culture supernatants were analyzed for nitric oxide (NO) and interleukin (IL)-1β. Real-time PCR and immunoblotting were conducted to quantify mRNA and protein expression, respectively. The expression levels of IL-1β were analyzed by confocal laser scanning microscopy. NF-κB-dependent SEAP levels were estimated by reporter assay[1]. |
动物实验 | Topical treatment with josamycin significantly suppressed the increase in the skin severity score in NC/Nga mice. This suppressive effect was equal to that of betamethasone, and was associated with a decrease in the density of cellular infiltration into the dermis, the mast cell count in the dermis and the serum IgE level. Furthermore, topical application of josamycin reduced the expression of IFN-γ and IL-4 in auricular lymph node cells and the skin lesions[2]. |
别名 | EN-141, 交沙霉素 |
分子量 | 827.99 |
分子式 | C42H69NO15 |
CAS No. | 16846-24-5 |
Powder: -20°C for 3 years | In solvent: -80°C for 1 year
DMSO: 41.67 mg/mL (50.33 mM)
可选溶剂 | 浓度 体积 质量 | 1 mg | 5 mg | 10 mg | 25 mg |
DMSO | 1 mM | 1.2077 mL | 6.0387 mL | 12.0774 mL | 30.1936 mL |
5 mM | 0.2415 mL | 1.2077 mL | 2.4155 mL | 6.0387 mL | |
10 mM | 0.1208 mL | 0.6039 mL | 1.2077 mL | 3.0194 mL | |
20 mM | 0.0604 mL | 0.3019 mL | 0.6039 mL | 1.5097 mL | |
50 mM | 0.0242 mL | 0.1208 mL | 0.2415 mL | 0.6039 mL |
对于不同动物的给药剂量换算,您也可以参考 更多...
请在以下方框中输入您的动物实验信息后点击计算,可以得到母液配置方法和体内配方的制备方法: 比如您的给药剂量是10 mg/kg,每只动物体重20 g,给药体积100 μL,一共给药动物10 只,您使用的配方为5% DMSO+30% PEG300+5% Tween 80+60% ddH2O。那么您的工作液浓度为2 mg/mL。
母液配置方法:2 mg 药物溶于 50 μL DMSO (母液浓度为 40 mg/mL), 如您需要配置的浓度超过该产品的溶解度,请先与我们联系。
体内配方的制备方法:取 50 μL DMSO 主液,加入 300 μL PEG300, 混匀澄清,再加 50 μL Tween 80,混匀澄清,再加 600 μL ddH2O, 混匀澄清。
您可能有的问题的答案可以在抑制剂处理说明中找到,包括如何准备库存溶液,如何存储产品,以及基于细胞的分析和动物实验需要特别注意的问题。
JOSAMYCIN 16846-24-5 Microbiology/Virology Antibacterial Antibiotic inhibit EN141 EN 141 Inhibitor EN-141 交沙霉素 Bacterial inhibitor