CAS |
No.144701-48-4 |
中文名称 |
替米沙坦(10mM in DMSO,无菌) |
英文名称 |
Telmisartan(10mM in DMSO,Sterile) |
分子式 |
C33H30N4O2 |
分子量 |
514.62 |
溶解性 |
请根据自己的实验要求使用。 |
外观(性状) |
无菌溶液 |
储存条件 |
Stroe at -20℃,6 months. |
靶点 |
Angiotensin Receptor(AT) |
通路 |
GPCR & G Protein |
背景说明 |
Telmisartan是一种有效的血管紧张素II 1型受体拮抗剂。 |
生物活性 |
Telmisartan is a potent, long lasting antagonist of angiotensin II type 1 receptor (AT1), selectively inhibiting the binding of 125I-AngII to AT1 receptors with IC50 of 9.2 nM.[1-5] |
In Vitro |
在完整的 RVSMC 细胞和膜制剂中,Telmisartan 以浓度依赖性方式抑制125I-AngII 与 AT1 受体的结合,IC50 为 9.2 ± 0.8 nM。在相同的实验条件下,血管紧张素 II 取代125I-AngII,IC50 值为 2.9 ± 0.5 nM。[3H]Telmisartan 与 SMC 膜的特异性结合被未标记 Telmisartan 和冷 AngII 取代的 IC50 值为分别为 7.7 ± 1.8 nM 和 32.7 ± 5.7 nM[1]。Telmisartan 处理 (100 μM) 减少三种 EAC 细胞系 (OE19、OE33 和 SKGT-4) 的增殖,诱导细胞周期停滞在 G0/G1 期并调节 EAC 细胞中的细胞周期相关蛋白,并诱导AMPK 并通过 EAC 细胞中的 AMPK/mTOR 通路调节细胞周期相关蛋白。Telmisartan 抑制 RTK、下游效应子和细胞周期相关蛋白的激活[5]。 |
In Vivo |
在 Telmisartan (0.1, 0.3, and 1 mg/kg) 处理的大鼠中,[3H]Telmisartan 与活 RVSMC 表面的特异性结合是饱和的,并迅速增加以在 1 h 内达到平衡。Telmisartan 与受体的解离非常缓慢,解离半衰期 (t1/2) 为 75 分钟,与 candesartan 相当,比血管紧张素 II (AngII) 慢近 5 倍。在体内,Telmisartan 可依赖于剂量依赖性地减弱对外源性 AngII 的血压反应[1]。Telmisartan (10 mg/kg/day) 在 PPE 输注后也能有效抑制动脉瘤的发病机制,无论处理是在动脉瘤形成之前或之后开始,还是持续有限或延长的时间。Telmisartan 处理与动脉瘤主动脉中 CCL5 和基质金属蛋白酶 2 和 9 的信使 RNA 水平降低有关,但对 PPARγ 调节的基因表达没有明显影响[2]。Telmisartan (1 mg/kg/day) 显著改善 5XFAD 小鼠的神经元丢失和空间获取障碍,但海马层 NeuN 表达没有任何变化。Telmisartan (1 mg/kg/day) 处理可减少 5XFAD 小鼠大脑中的淀粉样蛋白负荷和小胶质细胞积累,诱导小胶质细胞极化以实现神经保护表型,但不会改变 5XFAD 小鼠特定脑区中 NEP 和 IDE 的表达水平[3]。Telmisartan (0.05, 0.1, 1 mg/kg, p.o.) 显著减少大鼠的不动时间,拮抗抑郁和焦虑,还显著降低大鼠血清皮质醇、NO、IL-6 和 IL-1β[4]。Telmisartan (50 μg, i.p.) 可使携带源自 OE19 细胞的异种移植物的小鼠肿瘤生长减少 73.2%。此外,Telmisartan 在体内显著改变了 miRNA 的表达[5]。 |
细胞实验 |
Cell proliferation is assayed using the CCK-8 cell counting kit. Briefly, 5×103 cells are seeded into each well of a 96-well plate and cultured in 100 μL of RPMI-1640 supplemented with 10% FBS. After 24 h, ARBs (telmisartan, irbesartan, losartan, and valsartan at 0, 1, 10, or 100 μM) or vehicle is added to each well, and cells are cultured for an additional 48 h. CCK-8 reagent (10 μL) is added to each well, and the plates are incubated at 37°C for 3 h. The absorbance is measured at 450 nm using a microplate reader. |
动物实验 |
Male athymic mice (BALB/c-nu/nu; 6 weeks old; 20-25 g) are maintained under specific pathogen-free conditions using a laminar airflow rack. The mice have continuous free access to sterilized (γ-irradiated) food and autoclaved water. Each mouse is subcutaneously inoculated with OE19 cells (5×106 cells per animal) in the flank. One week later, the xenografts are identifiable as masses with a maximal diameter > 4 mm. The animals are randomly assigned to treatment with telmisartan (50 μg per day) or diluent only (control). The telmisartan group is intraperitoneally (i.p.) injected five times per week with 2 mg/kg telmisartan for four weeks; the control group is administered 5% DMSO alone for four weeks. Tumor growth is monitored daily by the same investigators, and tumor size is measured weekly. The tumor volume (mm3) is calculated as the tumor length (mm) × tumor width (mm)2/2. All animals are sacrificed on day 22 after treatment, and all animals survive during this period. Between-group differences in tumor growth are analyzed by two-way ANOVA. |
数据来源文献 |
[1]. Maillard MP, et al. In vitro and in vivo characterization of the activity of telmisartan: an insurmountable angiotensin II receptor antagonist. J Pharmacol Exp Ther. 2002 Sep;302(3):1089-95. [2]. Xuan H, et al. Inhibition or deletion of angiotensin II type 1 receptor suppresses elastase-induced experimental abdominal aortic aneurysms. J Vasc Surg. 2017 Apr 20. pii: S0741-5214(17)30100-3. [3]. Torika N, et al. Intranasal telmisartan ameliorates brain pathology in five familial Alzheimer‘s disease mice. Brain Behav Immun. 2017 Apr 3. [4]. Aswar U, et al. Telmisartan attenuates diabetes induced depression in rats. Pharmacol Rep. 2017 Apr;69(2):358-364. [5]. Fujihara S, et al. The angiotensin II type 1 receptor antagonist telmisartan inhibits cell proliferation and tumor growth of esophageal adenocarcinoma via the AMPKα/mTOR pathway in vitro and in vivo. Oncotarget. 2017 Jan 31;8(5):8536-8549. |
规格 |
0.1ml 0.3ml 0.5ml 1ml 1.5ml |
单位 |
瓶 |