| 产品描述： | Bosentan is a competitive and dual antagonist of endothelin-1 (ET) for the ETA and ETB receptors with Ki of 4.7 nM and 95 nM in human SMC, respectively. |
| 靶点： |
Ki: 4.7 nM (ETA receptor, in human SMC), 95 nM (ETA receptor, in human SMC);EndothelinReceptor |
| 体外研究： |
Bosentan (BOS) competitively and specifically antagonizes binding of 125I-labelled ET-1 to ETA receptors on human smooth muscle cells (SMC) and ETB receptors on human placenta cells. The in vitro binding affinity of Bosentan to ETA receptors on human SMC is 4.7 nM and to ETB receptors on human SMC or placenta cells is 41 or 95 nM. Bosentan has 67-fold greater selectivity for ETA than ETB receptors (mean IC50=7.1 vs 474.8 nM) in an in vitro 125I-labeling assay |
| 体内研究： |
Single-dose Bosentan 62.5 mg significantly (p<0.01 vs baseline) plasma ET-1 levels by 2-fold in 7 pts with WHO class II or III idiopathic or CTD-associated PAH, with peak levels achieved at 8 h. In hypertensive rats, Macitentan 30 mg/kg further decreases mean arterial blood pressure (MAP) by 19 mm Hg when given on top of Bosentan 100 mg/kg. Conversely, Bosentan given on top of Macitentan fails to induce an additional MAP decrease. In pulmonary hypertensive rats, Macitentan 30 mg/kg further decreases mean pulmonary artery pressure (MPAP) by 4 mm Hg on top of Bosentan, whereas a maximal effective dose of Bosentan given on top of Macitentan does not cause any additional MPAP decrease |
| 参考文献： |
1. Dhillon S, et al. Bosentan: a review of its use in the management of mildly symptomatic pulmonary arterial hypertension. Am J Cardiovasc Drugs. 2009;9(5):331-50. 2. Akamata K, et al. Bosentan reverses the pro-fibrotic phenotype of systemic sclerosis dermal fibroblasts via increasing DNA binding ability of transcription factor Fli1. Arthritis Res Ther. 2014 Apr 3;16(2):R86. 3. Iglarz M, et al. Comparison of pharmacological activity of macitentan and bosentan in preclinical models of systemic and pulmonary hypertension. Life Sci. 2014 Nov 24;118(2):333-9. 4. Son GY, et al. Endothelin Regulates Porphyromonas gingivalis-Induced Production of Inflammatory Cytokines. PLoS One. 2016 Dec 28;11(12):e0167713. |
| 溶解性： |
soluble in DMSO |
| 保存条件： |
-80℃（运输条件：冰袋低温运输） |
| 配置溶液浓度参考： |
|
1mg |
5mg |
10mg |
| 1 mM |
1.813 ml |
9.064 ml |
18.128 ml |
| 5 mM |
0.363 ml |
1.813 ml |
3.626 ml |
| 10 mM |
0.181 ml |
0.906 ml |
1.813 ml |
| 50 mM |
0.036 ml |
0.181 ml |
0.363 ml |
|
| 注意： |
部分产品我司仅能提供部分信息，我司不保证所提供信息的权威性，仅供客户参考交流研究之用。 |
上海工商
危险品化学品经营许可证（不带存储）
营业执照(三证合一)
北京