生物活性 | |||
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靶点 |
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描述 | A significant portion of patients with lung cancer harbor mutations in the kinase domain of epidermal growth factor receptor (EGFR). WZ4002 is a novel, irreversible EGFR inhibitor with IC50 values of 2 nM, 8 nM, 3 nM, and 2 M for EGFR (L858R), EGFR (L858R/T790M), EGFR (E746_A750), and EGFR (E746_A750/T790M), respectively, in Ba/F3 cells[5]. In NR6 cells stably expressing EGFR L858R/T790M or del E746_A750/T790M, treatment of WZ4002 (0.001 – 10 μM) for 16 hours efficiently inhibited TGF-α-induced phosphorylation of del E746_A750/T790M[6]. When H1975 cells with the EGFR mutations L858R and T790M were incubated with WZ4002 at various concentrations (0.01 – 3 μM) for 72 hours, HFG (20 ng/mL) significantly induced the resistance to WZ4002 whereas E7050 (1 μM) reversed the resistance induced by HFG[7]. By combing WZ4002 (1 μM) and ABT-263 (1 μM), the tumor spheroids of H1975 SR cells were markedly fragmented 24 hours after the treatment and nearly half of the H1975 SR cells underwent apoptotic cell death[8]. WZ4002 (2.5 mg/kg or 25 mg/kg) inhibited EGFR phosphorylation and significantly reduced the tumor volume in both EGFR del E746_A750/T790M and L858R/T790M mice[5]. | ||
作用机制 | WZ4002 acts as an irreversible, mutant-selective EGFR kinase inhibitor that binds to the active conformation of EGFR with the regulatory C-helix and the DFG segment of the activation loop[5]. |
细胞研究 | |||||
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细胞系 | 浓度 | 检测类型 | 检测时间 | 活动说明 | 数据源 |
human 16HBE cells | Proliferation assay | 72 h | Antiproliferative activity against human 16HBE cells expressing wild type EGFR after 72 hrs by MTT assay, IC50=0.811 μM | 23792318 | |
human 16HBE14o- cells | Cytotoxicity assay | 72 h | Cytotoxicity against human 16HBE14o- cells harboring wild type EGFR assessed as growth inhibition after 72 hrs by MTT assay, IC50=1.355 μM | 23668441 | |
human A431 cells | Cytotoxicity assay | 72 h | Cytotoxicity against human A431 cells overexpressing wild type EGFR assessed as growth inhibition after 72 hrs by MTT assay, IC50=1.108 μM | 23668441 |
实验方案 | |||
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1mg | 5mg | 10mg | |
1 mM 5 mM 10 mM |
2.02mL 0.40mL 0.20mL |
10.10mL 2.02mL 1.01mL |
20.20mL 4.04mL 2.02mL |
参考文献 |
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