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| 靶点 |
USP20/Ub-Rho(IC50= 160 nM)
USP20-mediated cleavage of protein-ubiquitin bonds is inhibited by GSK2643943A[2]. GSK2643943A (1 μM, 5 μM; overnight) increases the susceptibility of SCC9 cells to oncolysis induced by oHSV-1[2]. Significantly higher virus yields were observed in SCC9 with 0.01 MOI T1012G infection when treated with 1μM of GSK2643943A[2]. |
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| 体外研究 (In Vitro) |
GSK2643943A[2] 抑制 USP20 介导的蛋白质泛素键裂解。
GSK2643943A(1 μM、5 μM;过夜)会增加 SCC9 细胞对 oHSV-1[2] 诱导的溶瘤作用的敏感性。 当用 1μM 的 GSK2643943A 处理时,在感染 MOI 为 0.01 的 SCC9 中观察到病毒产量显着升高[2]。 在 SCC9 细胞中,使用 GSK2643934A(1 μM 或 5 μM)处理可增强在 0.01 或 0.1 MOI 感染下的 oHSV-1 T1012G 病毒产量(通过空斑试验测定)。 在 SCC9 细胞中,GSK2643934A(1 μM)处理可增加在 5 MOI T1012G 感染下的病毒蛋白积累(ICP0、ICP8、VP16)和病毒 mRNA 水平(ICP8、VP16),通过 Western blot 和 qPCR 验证。 GSK2643934A(1 μM 或 5 μM)与 T1012G 感染(0.01–1 MOI)联用,可显著降低 SCC9 细胞活力(CCK-8 法测定)。 在小鼠 OSCC SCC7 细胞中,GSK2643934A(1 μM)处理也能增加在 0.01 MOI 感染下的 oHSV-1 T1012G 病毒产量。 |
| 体内研究 (In Vivo) |
在 SCC9 肿瘤中,GSK2643943A(每天 5 毫克/公斤,腹腔注射,持续 6 天)可放大 oHSV-1 诱导的溶瘤作用[2]。
在 SCC7 细胞中,GSK2643943A(每天 2.5 毫克/公斤,腹腔注射,持续 9 天)天)调节 oHSV-1 T1012G 的复制和溶瘤作用[2]。 在携带 SCC9 肿瘤的裸鼠中,腹腔注射 GSK2643934A(5 mg/kg,连续6天)联合瘤内注射 T1012G(1×10⁶ PFU,第1、4、7天)可显著降低肿瘤体积和重量,优于单药或对照组。 在免疫正常的 C3H/HeN 小鼠携带 SCC7 肿瘤模型中,腹腔注射 GSK2643934A(2.5 mg/kg,连续9天)联合瘤内注射 T1012G(1×10⁷ PFU,第1、4、7、10天)也显示出增强的抗肿瘤效果。 肿瘤组织 qPCR 分析显示,GSK2643934A 处理可轻微增加 SCC9 和 SCC7 肿瘤中病毒 mRNA(ICP0 和 gD)水平。 |
| 酶活实验 |
在 SCC9 细胞中进行免疫共沉淀实验,评估 GSK2643934A 对 USP20 介导的去泛素化作用的影响。细胞经 GSK2643934A 或 DMSO 处理,裂解后使用抗-STING 抗体进行免疫沉淀。Western blot 分析显示,GSK2643934A 处理可增加多聚泛素积累并轻微降低 STING 蛋白水平,表明其抑制了 USP20 的去泛素化活性。
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| 细胞实验 |
细胞系:SCC9 细胞
浓度:1 μM、5 μM (GSK+0.01 MOI T1012) 1 μM (GSK+0.01 MOI/ 1 MOI T1012) 孵育时间:过夜 结果:显示SCC9 活力下降 50%(1 μM GSK+0.01 MOI T1012 感染),活力显着下降 (R50%)(5 μM GSK+0.01 MOI T1012 感染)。当暴露于 1 MOI T1012G 感染时,SCC9 活力显着降低。 病毒滴度测定:SCC9 或 SCC7 细胞以不同 MOI 感染 T1012G,1–2 小时后更换培养基。收集细胞,裂解后接种于 Vero 细胞进行空斑试验。 Western blot:细胞裂解后经 SDS-PAGE 分离,转膜后使用抗体检测病毒蛋白(ICP0、ICP8、VP16)和细胞蛋白(STING、USP20、β-actin)。 qPCR:提取总 RNA,反转录后使用 SYBR Green 和特异性引物进行定量分析。 细胞活力测定:使用 CCK-8 试剂盒,在 96 孔板中处理细胞,测定 OD450 值。 |
| 动物实验 |
Animal Model: The model of subcutaneous xenograft[2].
(Four groups, n = 6-7 per group; 5-week-old female BALB/c nude mice or C3H/HeN mice; SCC9 or SCC7 cells (8×106 cells or 1×106 cells)[2] Dosage: 5 mg/kg Administration: GSK2643943A (alone): injectable once daily for a period of six days. The combination of GSK2643943A is intraperitoneal administration every day for six days plus intratumoral injection on days 1, 4, and 7 with 50 mL of 1×10^6 PFU T1012G in PBS. Result: caused a discernible decline in tumor volumes and markedly decreased tumor volumes in mice when GSK2643943A and oHSV-1 T1012G were given together. gD mRNA accumulation and slightly elevated viral ICP0 in SCC9 tumors. For SCC9 xenograft model, BALB/c nude mice were subcutaneously inoculated with SCC9 cells. When tumor volume reached 70–120 mm³, mice were randomized into four groups: vehicle (PBS intratumoral), GSK2643934A (5 mg/kg intraperitoneal daily for 6 days), T1012G (1×10⁶ PFU intratumoral on days 1, 4, 7), and combination. Tumor volume was measured every 2–3 days for 25 days. For SCC7 model, C3H/HeN mice were inoculated with SCC7 cells. Treatment groups were similar but with GSK2643934A at 2.5 mg/kg daily for 9 days and T1012G at 1×10⁷ PFU on days 1, 4, 7, and 10. Tumor volume was tracked for 19 days. |
| 参考文献 |
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| 其他信息 |
GSK2643934A is used as a tool inhibitor to study the role of USP20 in regulating STING stability and antiviral response in OSCC cells.
It enhances oHSV-1 replication and oncolysis in resistant tumor cells, suggesting its potential as a combinatorial agent with oncolytic virotherapy. |
| 精确质量 |
277.10
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| 元素分析 |
C, 73.63; H, 4.36; F, 6.85; N, 15.15
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| 相关CAS号 | |
| 外观&性状 |
Light yellow to yellow solid powder
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| InChi Key |
CGXBPMZRTMXEIA-SNAWJCMRSA-N
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| InChi Code |
InChI=1S/C17H12FN3/c18-13-3-1-2-11(8-13)4-5-12-6-7-14-15(10-19)17(20)21-16(14)9-12/h1-9,21H,20H2/b5-4+
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| 化学名 |
(E)-2-amino-6-(3-fluorostyryl)-1H-indole-3-carbonitrile
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| 别名 |
GSK2643943A; GSK 2643943A; GSK-2643943A; GSK2643943; GSK 2643943; GSK-2643943;
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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 |
| 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) |
DMSO : 55~125 mg/mL ( 198.34~450.78 mM )
Ethanol : ~7 mg/mL |
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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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