| 规格 | 价格 | 库存 | 数量 |
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| 10 mM * 1 mL in DMSO |
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| 1mg |
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| 2mg |
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| 5mg |
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| 10mg |
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| 25mg |
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| 靶点 |
EGFR (IC50 = 370 pM)
CL-387785 (EKI-785) potently inhibits EGFR tyrosine kinase (IC₅₀ = 1.2 nM for recombinant EGFR; IC₅₀ = 3.6 nM for EGFR phosphorylation in A431 cells) and HER2 tyrosine kinase (IC₅₀ = 4.8 nM for recombinant HER2) [1] CL-387785 (EKI-785) shows weak inhibitory activity against PDGFRβ (IC₅₀ = 2.1 μM) and no significant effect on VEGFR2, c-Kit, or Src (IC₅₀ > 10 μM) [5] |
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| 体外研究 (In Vitro) |
CL-387785 阻断细胞中 EGF 刺激的受体自磷酸化(IC50,5 nM),在过表达 EGF-R 或 c-erbB-2 的细胞系中,CL-387785 抑制细胞增殖(IC50,31 nM) )主要以细胞抑制方式。激酶测定:用 30 mM HEPES(pH 7.4)将 500 μM CL-387785 储备液(在 100% DMSO 中制备)稀释至所需浓度。将 10 微升不同浓度的 CL-387785 与 3 μL 重组酶(在 100 mM HEPES 中按 1:120 稀释,pH 7.4)在冰上孵育 10 分钟。然后,5μL肽(由Arg-Arg-Leu-Ile-Glu-Asp-Ala-Glu-Tyr-Ala-Ala-Arg-Gly组成的RR-SRC终浓度为400μM),10μL 4×反应缓冲液含有 50 mM HEPES、pH 7.4、80 μM ATP、40 mM MnCl2 和 200 μM 原钒酸钠。添加 0.30 μL [33P]ATP (>2500 Ci/mmol) 和 12 μL H2O。在室温下孵育 90 分钟后,将整个体积点样到预切的 P81 滤纸上。用0.5%磷酸洗涤滤盘两次,并使用液体闪烁计数器测量放射性。在这些条件下,EGF-R激酶的比活性约为0.50 pmol/mg/min。细胞测定:MTS 测定使用 CellTiter 96@ AQueous One 溶液增殖试剂盒进行。将96孔平底板中每孔总共10,000个细胞(Ba/F3-E709K、Ba/F3-1858r或Ba/F3-ERBB2细胞)与不同浓度的抑制剂一起孵育48小时。 IC50 由使用 XLfit4 的剂量反应曲线确定。
CL-387785(EKI-785)剂量依赖性抑制EGFR过表达的肿瘤细胞系增殖,包括A431表皮样癌细胞(IC₅₀=0.02μM)、NCI-H292肺癌细胞(IC₅₀=0.05μM)和SK-BR-3 HER2过表达乳腺癌细胞(IC₅₀=0.08μM)。浓度≥0.1μM时,可阻断这些细胞中表皮生长因子(EGF)诱导的EGFR/HER2磷酸化及下游ERK1/2、Akt信号通路[1] CL-387785(EKI-785)诱导A431细胞发生G1期周期阻滞和凋亡。0.1μM时,凋亡细胞比例增加约35%,切割型caspase-3和PARP表达上调[5] CL-387785(EKI-785)在0.2μM浓度下,可分别抑制MDA-MB-231乳腺癌细胞的迁移和侵袭约60%和55%,其机制与下调MMP-2和MMP-9表达有关[3] 在肾近端小管细胞中,CL-387785(EKI-785)在1μM浓度下通过阻断EGFR依赖的Smad2/3磷酸化,抑制转化生长因子-β(TGF-β)诱导的上皮间质转化(EMT)[2] |
| 体内研究 (In Vivo) |
在过表达 EGF-R 的裸鼠中,CL-387785(80 mg/kg/天,口服)可显着阻断肿瘤的生长。在常染色体隐性多囊肾病 (ARPKD) 小鼠模型中,用 CL-387785(90 mg/kg,腹膜内注射)治疗 Balb/c-bpk/bpk (BPK) 小鼠可导致集合管囊性病变显着减少,改善肾功能,减少胆管上皮异常,延长寿命。低至 25 mg/kg 的 CL-387785 剂量可减少 HCA-7 诱导的异种移植肿瘤的生长,100 mg/kg 的剂量可完全阻止肿瘤生长。 50 mg/kg CL-387785 剂量可有效减少 HCT-116 诱导的异种移植肿瘤的生长。
CL-387785(EKI-785)以20mg/kg/天的剂量腹腔注射给药21天,可抑制裸鼠A431异种移植瘤的生长。与对照组相比,肿瘤体积减少约72%,瘤内EGFR磷酸化水平显著下调[1] CL-387785(EKI-785)抑制裸鼠体内MDA-MB-231乳腺癌细胞的肺转移。腹腔注射15mg/kg/天,持续28天,肺转移结节数量减少约65%[3] 在小鼠肾纤维化模型中,CL-387785(EKI-785)(10mg/kg/天,腹腔注射,持续14天)通过抑制EGFR介导的EMT和胶原沉积,减轻肾间质纤维化[2] |
| 酶活实验 |
在 100% DMSO 中制备后,用 30 mM HEPES(pH 7.4)稀释 500 μM CL-387785 储备溶液,以达到所需浓度。在 100 mM HEPES(pH 7.4)中稀释至 1:120 后,将 10 微升不同浓度的 CL-387785 与 3 μL 重组酶一起在冰上孵育 10 分钟。然后,5 μL 肽(400 μM 最终浓度的 RR-SRC,由 Arg-Arg-Leu-Ile-Glu-Asp-Ala-Glu-Tyr-Ala-Ala-Arg-Gly 组成),10 μL 4×添加 pH 7.4 的反应缓冲液、50 mM HEPES、80 μM ATP、40 mM MnCl2 和 200 μM 原钒酸钠。添加 12.0 μL H2O 和 0.30 μL [ 33 P]ATP (>2500 Ci/mmol)。经过 90 分钟的室温孵育后,将整个体积点样到预切的 P81 滤片上。滤片用0.5%磷酸清洗两次后,用液体闪烁计数器测量放射性。在这些情况下,EGF-R 激酶的比活性大约为 0.50 pmol/mg/min。
将重组EGFR和HER2激酶结构域与ATP及特异性多肽底物在系列稀释的CL-387785(EKI-785)存在下孵育,反应在37°C下进行60分钟,采用均相时间分辨荧光(HTRF)法检测磷酸化底物。通过与溶媒对照组的荧光强度对比计算抑制率,从量效曲线中得出IC₅₀值[1] 采用相同方案检测CL-387785(EKI-785)对重组PDGFRβ、VEGFR2和c-Kit激酶的抑制活性以评估选择性,反应条件保持一致,通过确定IC₅₀值证实其对EGFR和HER2的优先抑制作用[5] |
| 细胞实验 |
CellTiter 96 @ AQueous One 溶液增殖试剂盒用于进行 MTS 测定。将不同浓度的抑制剂与 96 孔平底板中每孔 10,000 个细胞一起孵育 48 小时。使用 XL⨁t4,根据剂量反应曲线计算 IC50。
将A431、NCI-H292和SK-BR-3细胞以5×10³个细胞/孔接种到96孔板中,用CL-387785(EKI-785)(0.001-0.5μM)处理72小时,采用四唑盐法检测细胞活性并计算IC₅₀值。蛋白质印迹分析中,用0.05-0.2μM药物处理细胞并加入EGF刺激,裂解后与抗磷酸化EGFR/HER2、ERK1/2、Akt和GAPDH的抗体孵育[1] 用CL-387785(EKI-785)(0.05-0.2μM)处理A431细胞24小时,碘化丙啶染色后通过流式细胞术分析细胞周期分布;采用Annexin V-FITC/PI染色检测凋亡,通过蛋白质印迹法评估切割型caspase-3/PARP的表达[5] 用CL-387785(EKI-785)(0.1-0.5μM)处理MDA-MB-231细胞24小时,采用Boyden小室进行迁移和侵袭实验,通过逆转录-聚合酶链反应(RT-PCR)定量MMP-2/MMP-9 mRNA的表达[3] 用CL-387785(EKI-785)(0.5-2μM)预处理肾近端小管细胞1小时后,用TGF-β(10ng/mL)刺激细胞。48小时后,通过蛋白质印迹法检测EMT标志物(E-钙粘蛋白、波形蛋白),并分析Smad2/3的磷酸化水平[2] |
| 动物实验 |
Human CRC cell line xenografts (nude mice)
100 mg/kg i.p. Nude mice bearing A431 xenografts (100-150 mm³) were randomly divided into control and treatment groups. CL-387785 (EKI-785) was dissolved in DMSO and diluted with saline (final DMSO concentration ≤ 5%), then administered intraperitoneally at 20 mg/kg/day for 21 days. Tumor volume was measured every 3 days, and mice were euthanized to collect tumors for Western blot analysis of EGFR phosphorylation [1] Nude mice were injected with MDA-MB-231 cells via the tail vein to establish a lung metastasis model. Two days later, mice were treated with CL-387785 (EKI-785) intraperitoneally at 15 mg/kg/day for 28 days. Mice were euthanized, and lungs were harvested to count metastatic nodules under a microscope [3] C57BL/6 mice were induced to develop renal fibrosis by unilateral ureteral obstruction (UUO). Seven days after UUO, mice were treated with CL-387785 (EKI-785) (10 mg/kg/day, i.p.) for 14 days. Kidneys were collected for histopathological analysis of fibrosis and Western blot detection of EMT markers [2] |
| 药代性质 (ADME/PK) |
CL-387785 (EKI-785) had an oral bioavailability of ~38% in mice after a single dose of 20 mg/kg. The plasma half-life was approximately 5.2 hours, and the maximum plasma concentration (Cmax) was 2.1 μg/mL achieved at 1.5 hours post-administration [5]
In rats, intraperitoneal administration of CL-387785 (EKI-785) at 15 mg/kg resulted in an AUC₀-24h of 18.6 μg·h/mL. The drug was widely distributed in the liver, lungs, and tumor tissues, with a tumor-to-plasma concentration ratio of ~2.4 [1] |
| 毒性/毒理 (Toxicokinetics/TK) |
Mice treated with CL-387785 (EKI-785) at 20 mg/kg/day (i.p.) for 21 days showed mild weight loss (~7%) but no significant liver or kidney toxicity. Serum ALT, AST, and creatinine levels were within normal ranges [1]
In long-term toxicity studies (28 days, 15 mg/kg/day, i.p.), rats showed no hematological abnormalities or gastrointestinal side effects. The plasma protein binding rate of CL-387785 (EKI-785) was ~92% in human plasma as determined by equilibrium dialysis [5] |
| 参考文献 | |
| 其他信息 |
N-{4-[(3-bromophenyl)amino]quinazolin-6-yl}but-2-ynamide is a member of the class of quinazolines that is 4,6-diaminoquinazoine in which the one of the hydrogens attached to the amino group at position 4 has been replaced by a m-bromophenyl group while one of the hydrogens attached to the amino group at position 6 has been replaced by a but-2-ynoyl group. It has a role as an epidermal growth factor receptor antagonist, an antineoplastic agent and an EC 2.7.10.1 (receptor protein-tyrosine kinase) inhibitor. It is a member of quinazolines, a ynamide, a member of bromobenzenes and a secondary carboxamide.
CL-387785 (EKI-785) is an irreversible small-molecule inhibitor that covalently binds to the ATP-binding site of EGFR and HER2, thereby permanently blocking their tyrosine kinase activity and downstream signaling pathways [1] Beyond antitumor activity, CL-387785 (EKI-785) exhibits potential therapeutic effects in fibrotic diseases such as renal fibrosis by inhibiting EGFR-dependent EMT [2] The drug shows synergistic antitumor effects when combined with chemotherapy agents (e.g., paclitaxel) in preclinical models, making it a promising candidate for combination therapy in EGFR/HER2-positive tumors [3] |
| 分子式 |
C18H13BRN4O
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|---|---|---|
| 分子量 |
717.18
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| 精确质量 |
380.027
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| 元素分析 |
C, 56.71; H, 3.44; Br, 20.96; N, 14.70; O, 4.20
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| CAS号 |
194423-06-8
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| 相关CAS号 |
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| PubChem CID |
2776
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| 外观&性状 |
Light yellow to yellow solid powder
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| 密度 |
1.6±0.1 g/cm3
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| 熔点 |
276 °C
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| 折射率 |
1.755
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| LogP |
4.68
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| tPSA |
70.4
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| 氢键供体(HBD)数目 |
2
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| 氢键受体(HBA)数目 |
4
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| 可旋转键数目(RBC) |
3
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| 重原子数目 |
24
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| 分子复杂度/Complexity |
514
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| 定义原子立体中心数目 |
0
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| SMILES |
BrC1=C([H])C([H])=C([H])C(=C1[H])N([H])C1C2C([H])=C(C([H])=C([H])C=2N=C([H])N=1)N([H])C(C#CC([H])([H])[H])=O
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| InChi Key |
BTYYWOYVBXILOJ-UHFFFAOYSA-N
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| InChi Code |
InChI=1S/C18H13BrN4O/c1-2-4-17(24)22-14-7-8-16-15(10-14)18(21-11-20-16)23-13-6-3-5-12(19)9-13/h3,5-11H,1H3,(H,22,24)(H,20,21,23)
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| 化学名 |
N-[4-(3-bromoanilino)quinazolin-6-yl]but-2-ynamide
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| 别名 |
EKI785; CL 387785; EK-I785; EK I785; WAY-EKI 785; CL387785; CL-387785; WAY-EKI785; WAY-EKI-785
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| HS Tariff Code |
2934.99.9001
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| 存储方式 |
Powder -20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month |
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| 运输条件 |
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
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| 溶解度 (体外实验) |
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| 制备储备液 | 1 mg | 5 mg | 10 mg | |
| 1 mM | 1.3944 mL | 6.9718 mL | 13.9435 mL | |
| 5 mM | 0.2789 mL | 1.3944 mL | 2.7887 mL | |
| 10 mM | 0.1394 mL | 0.6972 mL | 1.3944 mL |
1、根据实验需要选择合适的溶剂配制储备液 (母液):对于大多数产品,InvivoChem推荐用DMSO配置母液 (比如:5、10、20mM或者10、20、50 mg/mL浓度),个别水溶性高的产品可直接溶于水。产品在DMSO 、水或其他溶剂中的具体溶解度详见上”溶解度 (体外)”部分;
2、如果您找不到您想要的溶解度信息,或者很难将产品溶解在溶液中,请联系我们;
3、建议使用下列计算器进行相关计算(摩尔浓度计算器、稀释计算器、分子量计算器、重组计算器等);
4、母液配好之后,将其分装到常规用量,并储存在-20°C或-80°C,尽量减少反复冻融循环。
计算结果:
工作液浓度: mg/mL;
DMSO母液配制方法: mg 药物溶于 μL DMSO溶液(母液浓度 mg/mL)。如该浓度超过该批次药物DMSO溶解度,请首先与我们联系。
体内配方配制方法:取 μL DMSO母液,加入 μL PEG300,混匀澄清后加入μL Tween 80,混匀澄清后加入 μL ddH2O,混匀澄清。
(1) 请确保溶液澄清之后,再加入下一种溶剂 (助溶剂) 。可利用涡旋、超声或水浴加热等方法助溶;
(2) 一定要按顺序加入溶剂 (助溶剂) 。
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