VX-809 (Lumacaftor)
目录号：S1565 别名： VRT 826809
Molecular Weight(MW): 452.41
VX-809 (Lumacaftor)通过促进突变型CFTR(F508del-CFTR)的成熟，从而纠正囊性纤维症中常见的CFTR突变，在fisher大鼠甲状腺细胞中EC50为0.1 μM。Phase 3。
客户使用该产品的4个实验数据：
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△F508CFTR diffusion is increased by different correction mechanisms. A, example trajectories from MDCK cell lines for wtCFTR (black) and △F508CFTR rescued by VX-809 treatment in the absence (red) and presence (blue ) of mCh-CFTR-C. B, summary graph for wtCFTR, r△F508CFTR and CFTR△PDZ diffusion in VX-809-treated and control MDCK cell lines. C, example trajectories for MDCK cells transiently expressing 3FLAG-tagged wtCFTR(black), △F508CFTR rescued by VX-809 (red), CFTR△PDZ ( blue ), and △F508CFTR△PDZ rescued by VX-809 (green). D, summary graph for CFTR dif- fusion in VX-809-treated MDCK transiently transfected with 3FLAG-tagged CFTR constructs. E, example trajectories from MDCK cell lines stably expressing wtCFTR ( left ) and △F508CFTR ( right ) treated with thapsigargin ( black)or CoPo-22 (red) or transiently expressing GFP-GRASP55 (blue ). F, graphs for △F508CFTR ( top ) and wtCFTR (bottom) diffusion in MDCK cell lines treated with thapsigargin or CoPo-22 or transiently expressing GFP-GRASP55. For reference, median and interquartile values for wtCFTR diffusive range are shown by dashed lines(bar 1, top ). G, GFP-GRASP55 is Golgi-localized by immunocytochemical analysis (scale bar, 10 μm). Scale bar in A (500 nm) refers to all trajectories. In panels Band D, statistically significant differences in populations are shown (*, p<0.001). SPT data for MDCK cell lines was derived from 140 –788 trajectories and for transiently transfected MDCK cells from 131–298 trajectories.
J Biol Chem 2012 287, 43630-8. VX-809 (Lumacaftor) purchased from Selleck.
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VX809 inceases the expression of DF508 CFTR in oocytes. Oocytes injected with DF508 CFTR and b-adrenergic receptor RNAs were incubated at 17oC for 3 days with and without 5 μM VX809. The conductance at the reversal potential (gCl at Vm = Erev) was assayed using two-electrode-voltage clamp. Oocytes were placed in experimental chambers and perfused with standard Frog Ringer's at room temperature where the conductance was monitored as a function of time. The conductance was near zero before stimulation using a cocktail containing 10 μM isoproterenol and 1 μM 3-isobutyl-1-methylxanthine (hatched bar). At steady state, conductance of oocytes treated with 5 μM VX809 ("x" symbols in panel A and white bar in panel B) was significantly larger than that of untreated oocytes ("+" symbols in panel A and black bar in panel B). Towards the end of the experiments, oocytes were exposed to 10 μM CFTR-172 to verify that the conductance was due to CFTR chloride channels.
Xuehong Liu of Oregon Health & Science University. VX-809 (Lumacaftor) purchased from Selleck.
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Figure 7. Using chamber experiments demonstrating that TGF- β1 inhibits functional rescue of △ F508-CFTR in CF-HBE cells. Representative recordings ( A&B) demonstrating that VX-809 and CF-106951 partially rescued the CFTRinh -172 sensitive I sc compared to vehicle control (Vehicle). VX-809 (10 μM), CF-106951 (10 μM) or vehicle control (DMSO) was added to the basolateral medium for 24 h. The final concentration of DMSO was ,0.1%. Experiments were repeated at least 3 times in CF-HBE cells from 3 different donors. In subsequent experiments, corrector VX-809 ( C&D) or CF-106951 ( E&F ) was used for 24 h to rescue the CFTRinh-172 sensitive Isc. Subsequently, TGF- β1 (15 ng/ml) or vehicle control (CTRL) was added with fresh VX-809 or CF-106951 to the basolateral medium for 24 h. Monolayers were bathed in Ringer’s solution in the presence of amiloride (10 μM). TGF-β1 decreased the CFTRinh-172 sensitive Isc rescued by either VX-809 or CF-106951.
VX-809 (Lumacaftor) purchased from Selleck.
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RAF1 and CAMKK1 single siRNA validation in flow cytometry. RAF1 and CAMKK1 single Dharmacon ON-TARGETplus siRNAs with or without VX-809 treatment. Measured surface CFTR fluorescence with a BD Accuri flow cytometer with Intellicyt HTFC. The grayed out region represents VX-809s average surface fluorescence. VX-809 + siRNA significance is shown from VX-809 negative control. Data are shown as mean ± SEM (3−4 replicates). One-way ANOVA with multiple comparison for significant changes from VX-809 neg. ctrl (0 nM) (red P-values). ***P ≤ 0.001; **P ≤ 0.01; *P ≤ 0.05.
Mol Pharm, 2018, 15(3):759-767. VX-809 (Lumacaftor) purchased from Selleck.
产品安全说明书
CFTR抑制剂选择性比较
生物活性
| 产品描述 | VX-809 (Lumacaftor)通过促进突变型CFTR(F508del-CFTR)的成熟，从而纠正囊性纤维症中常见的CFTR突变，在fisher大鼠甲状腺细胞中EC50为0.1 μM。Phase 3。 | ||||||||||||||||
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| 特性 | 在纠正CFTR缺陷方面，VX-809比之前报道的药物特异性更强，且更有效。 | ||||||||||||||||
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| 体外研究 |
VX-809在雌激素受体（ER）水平上起作用的行为，使一部分F508del-CFTR采取正确折叠的方式，退出ER，转移到细胞表面，正常起作用。VX-809作用于表达 F508del-CFTR的Fischer 大鼠甲状腺 (FRT)细胞, VX-809显著提高F508del-CFTR突变，提高7.1 倍，EC50为0.1 μM, 且增强F508del-CFTR调节的氯离子运输，提高5 倍， EC50 为0.5 μM, 而VRT-768作用时具有更高的EC50 值，EC50分别为7.9 μM 和 16 μM。VX-809 (3 μM)作用于表达F508del-CFTR的HEK-293细胞,提高ER中的F508del-CFTR，提高6倍。VX-809作用于携带F508del-CFTR突变的原代人支气管上皮 (HBE)细胞，提高CFTR成熟度，且增强氯离子分泌，EC50分别为350 nM和81 nM,比Corr-4a和VRT-325更有效。VX-809修正的F508del-CFTR具有单通道开发概率，为0.39，与正常CFTR 类似，正常CFTR为0.40。与VX-770不同, VX-809不是CFTR增强剂，急剧加入VX-809不会对F508del-CFTR 功能造成影响。与VRT-325和Corr-4a相反, VX-809 不会促进正常或突变形式hERG 或P-gp的进程,及其他疾病引起错误定位的蛋白质，包括α1-抗胰蛋白酶Z突变 (E342K-α1-AT)或N370S-β-葡萄糖苷酶, 说明VX-809特异性作用于CFTR。 |
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| Cell Data |
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推荐的实验操作(此推荐来自于公开的文献所以Selleck并不保证其有效性)
| 激酶实验：[1] |
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F508del-CFTR成熟度: 用浓度不断增高的VX-809处理稳定表达F508del-CFTR的Fischer大鼠甲状腺(FRT)细胞48小时。温育后，细胞收集在冰冻D-PBS溶液中 (没有钙和镁)，然后按1,000 × g 转速在4oC下离心。细胞颗粒溶解1% Nonidet P-40, 0.5%去氧胆酸钠，200 mM NaCl, 10 mM Tris, pH 7.8, 及 1 mM EDTA和蛋白酶抑制剂混合物中(1:250)，然后在冰上放置30分钟。裂解物在10,000×g转速4oC下旋转10分钟，将细胞核和不溶性物质制成颗粒状。12 μg 全部蛋白在Laemmli buffer 中与5% β-巯基乙醇在37oC加热5分钟，然后上样到3% 到8% Tris-乙酸凝胶上。凝胶转移到硝化纤维素中，使用单克隆CFTR抗体或 GAPDH多克隆抗体进行 Western blotting。通过增强发光而进行印迹。通过扫描片的 NIH ImageJ 分析而而测量C带和GAPDH的相对量。 |
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| 细胞实验：[1] |
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溶解度 (25°C)
| 体外 | DMSO | 90 mg/mL (198.93 mM) |
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| Ethanol | 6 mg/mL (13.26 mM) | |
| Water | Insoluble | |
| 体内 |
从左到右依次将纯溶剂加入产品，现配现用(数据来自Selleck实验检测而非文献)： 30% PEG400+0.5% Tween80+5% propylene glycol |
30 mg/mL |
* 溶解度检测是由Selleck技术部门检测的，可能会和文献中提供的溶解度有所差异，这是由于生产工艺和批次不同产生的正常现象。请按照顺序依次加入各个纯溶剂。
化学数据
| 分子量 | 452.41 |
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| 化学式 | C24H18F2N2O5 |
| CAS号 | 936727-05-8 |
| 稳定性 | powder |
| in solvent | |
| 别名 | VRT 826809 |
计算器
摩尔浓度计算器
本计算器可帮助您计算出特定溶液中溶质的质量、溶液浓度和体积之间的关系，公式为:
质量 (g) = 浓度 (mol/L) x 体积 (L) x 分子量 (g/mol)
摩尔浓度计算公式
*在配置溶液时，请务必参考Selleck产品标签上、MSDS / COA（可在Selleck的产品页面获得）批次特异的分子量使用本工具。
稀释计算器
用本工具协助配置特定浓度的溶液，使用的计算公式为：
开始浓度 x 开始体积 = 最终浓度 x 最终体积
稀释公式
稀释公式一般简略地表示为: C1V1 = C2V2 ( 输入 输出 )
在配置溶液时，请务必参考Selleck产品标签上、MSDS / COA（可在Selleck的产品页面获得）批次特异的分子量使用本工具。.
分子量计算器
通过输入化合物的化学式来计算其分子量：
注：化学分子式大小写敏感。C10H16N2O2 c10h16n2o2
摩尔浓度计算器
临床试验信息
| NCT Number | Recruitment | Conditions | Sponsor/Collaborators | Start Date | Phases |
|---|---|---|---|---|---|
| NCT02653027 | Withdrawn | Diabetes|Cystic Fibrosis | Massachusetts General Hospital | January 1 2018 | Not Applicable |
| NCT02653027 | Withdrawn | Diabetes|Cystic Fibrosis | Massachusetts General Hospital | January 1 2018 | Not Applicable |
| NCT03125395 | Active not recruiting | Cystic Fibrosis | Vertex Pharmaceuticals Incorporated | May 12 2017 | Phase 3 |
| NCT03125395 | Active not recruiting | Cystic Fibrosis | Vertex Pharmaceuticals Incorporated | May 12 2017 | Phase 3 |
| NCT02858843 | Terminated | Cystic Fibrosis|Diabetes | Massachusetts General Hospital | August 1 2016 | Not Applicable |
| NCT02858843 | Terminated | Cystic Fibrosis|Diabetes | Massachusetts General Hospital | August 1 2016 | Not Applicable |
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