名称 | EHT 1864 |
描述 | EHT 1864 (EHT 1864 2HCl) is a Rac family GTPase inhibitor that blocks activation by direct binding to Rac1, Rac1b, Rac2, and Rac3 (Kd=40/50/60/250 nM). EHT 1864 inhibits Rac, Ras, and Tiam-induced growth transformation of NIH-3T3 fibroblasts. |
细胞实验 | NIH 3T3 cells stably expressing oncogenic Ras are plated in 96-well plates. The cells are cultured for up to 4 days in complete growth medium, either alone, or supplemented with 5 μM EHT 1864. Cell growth is then assessed using the conversion of MTT to a formazan product. Briefly, the MTT reagent (from a 5 mg/ml solution diluted in PBS) is added to the wells at a final concentration of 0.5 mg/ml, and the cells are further incubated for 4 h at 37°C. The medium is then removed, and the reaction is terminated by adding 100 μl/well Me2SO. The absorbance is read at 570 nm using a microplate reader.(Only for Reference) |
激酶实验 | Inhibitor:GTPase binding analyses: For inhibitor:GTPase binding analyses, aliquots of small GTPase solution (containing 1 μM inhibitor) are titrated into a solution of 1 μM inhibitor in the cuvette. Changes in fluorescence anisotropy are monitored at λex = 360 nm, λem = 440 nm, 30 s after each addition. All data analysis and curve fitting were performed using Microsoft Excel and QuantumSoft's ProFit for Mac OS X. |
体外活性 | 方法: U87-MG 细胞用 EHT 1864 (10-25 µM) 处理 5 min,通过 pull-down 检测活化 Rac1 或 RhoA 的水平。
结果: EHT 1864 以剂量依赖的方式强烈抑制 Rac1 与其效应子 Pak1 相互作用的能力。相比之下,即使在最高测试剂量 (25 µM) 下,EHT 1864 也不会影响 RhoA 的激活状态。[1]
方法: 小鼠成纤维细胞 NIH 3T3 用 EHT 1864 (5 µM) 处理 4 h,然后用 PDGF、LPA 或 bradykinin 刺激培养物 15 min,然后固定,用 Alexa phalloidin 观察肌动蛋白丝。
结果: PDGF、LPA 和 bradykinin 分别有效诱导膜皱缩和 lamellipodia 形成、肌动蛋白应力纤维和丝状伪足。然而,在 EHT 1864 存在的情况下,虽然 LPA 和 bradykinin 仍然诱导了肌动蛋白细胞骨架组织的各自变化,但 PDGF 诱导的 lamellipodia 形成被完全阻断。EHT 1864 处理的细胞显示 PDGF 对 lamellipodia 的刺激减少了约 80%。[2] |
体内活性 | 方法: 为检测体内抗肿瘤活性,将 EHT 1864 (100 mg/kg) 腹腔注射给携带 BT-474 异种移植物的 NSG 小鼠,每天两次,持续两周。
结果: EHT 1864 显著减缓了肿瘤生长,平均每周生长率为 50% vs. 27%。EHT 1864 大大降低了 P-ERK1/2、P-AKT、P-p70S6K 和 P-Histone H3S10 (有丝分裂的标志物) 的水平。[3] |
存储条件 | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice. |
溶解度 | DMSO : 50 mg/mL (85.99 mM) H2O : 58.2 mg/mL (100 mM)
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关键字 | precursor | β-amyloid | EHT 1864 | protein | disease | Alzheimer | amyloid | Ras | EHT1864 | inhibit | transformation | Inhibitor | EHT-1864 |
相关产品 | Z62954982 | CASIN | (S)-(-)-Perillyl alcohol | CCG-257081 | Deltarasin | Azathioprine | RMC-6236 | ZCL278 | Zoledronic Acid | Ketoconazole | Salirasib | SKLB-163 |
相关库 | 抑制剂库 | 经典已知活性库 | 抗癌活性化合物库 | 已知活性化合物库 | 抗结直肠癌化合物库 | 激酶抑制剂库 | GPCR靶点分子库 | 神经退行性疾病化合物库 | 膜蛋白靶向化合物库 | 疼痛相关化合物库 |