
ML 239inhibitor of the breast cancer stem cells |
Sample solution is provided at 25 µL, 10mM.
































Quality Control & MSDS
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- Purity = 98.00%
- COA (Certificate Of Analysis)
- MSDS (Material Safety Data Sheet)
Chemical structure


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Cas No. | 1378872-36-6 | SDF | Download SDF |
Chemical Name | (1Z,N"E)-N"-((1H-pyrrol-2-yl)methylene)-2-(2,4,6-trichlorophenoxy)acetohydrazonic acid | ||
Canonical SMILES | ClC1=CC(Cl)=C(OC/C(O)=N/N=C([H])/C2=CC=CN2)C(Cl)=C1 | ||
Formula | C13H10Cl3N3O2 | M.Wt | 346.60 |
Solubility | Soluble in DMSO | Storage | Store at -20°C |
Physical Appearance | A crystalline solid | Shipping Condition | Evaluation sample solution : ship with blue ice.All other available size:ship with RT , or blue ice upon request |
General tips | For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months. |
ML239 is the best-in-class inhibitor of the breast cancer stem cells with an IC50= 1.16 µM. [1]
ML239 was a selective inhibitor an IC50= 1.18 µM against HMLE_sh_ECad, demonstrated a >23-fold selectivity over the control line, and was toxic to another CSC-like line, HMLE_shTwist, and a breast carcinoma cell line, MDA-MB-231. Five genes (ATP6V0C, PKM2, PPDPF, RPL23, andSERINC2) were differentially regulated in HMLE_sh_GFP after treatment with ML239. Gene expression studies conducted with ML239-treated cells showed altered gene expression in the NF-κB pathway in the HMLE_sh_ECad line but not in the isogenic control line. ML239 was selectively toxic toward another CSC-like cell line, HMLE_Twist, and the breast cancer line, MDA-MB-231. Similar to the results observed in the HMLE_sh_ECad cell line, ML239 was potently toxic, inhibiting HMLE_Twist with an IC50~0.1 µM. ML239 displayed potent toxicity (IC50= 2.81 µM) to the breast carcinoma cell line, MDA-MB-231 [1]. ML239 also alters the expression of genes in the NF-κB, MAPK and inflammatory cytokine pathways.
Reference:
1.Phenotypic high-throughput screening elucidates target pathway in breast cancer stem cell-like cells. J Biomol Screen. 2012 Oct;17(9):1204-10. Epub 2012 Aug 30.
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我要做的两个目的蛋白,分子量一个是140的,另一个是36,内参用的GAPDH。这几天刚刚要做小鼠组织的蛋白,就把新提取的组织蛋白和之前做过的细胞蛋白一起上了,细胞和组织的各上了3个孔。
电泳转膜孵育等条件都是以前做成熟的
之后显影,细胞蛋白的,两个目的和内参都出得挺好;但是小鼠的组织蛋白只有分子量140的那个显出条带了,36的那个显出来的像一片水渍一样,斑片状的黑,内参有时也这样、有时干脆什么都不显。不知道这是什么原因...按说细胞同样的蛋白做出来,WB的各个步骤应该不会有太大问题的。
有点怀疑蛋白提取的不好,我提组织蛋白的的操作是在冰上进行的,裂解液也加有PMSF,用BCA法测得的蛋白浓度大概也有3~5mg/ml。
在这里求助各位高手~望给我指点一下~不胜感激啊!
去垢剂作为添加剂生长蛋白质晶体是一项很有用的技术。非离子和两性离子结晶剂在膜蛋白结晶中已经得到很好应用,目前已经变成常规的实验手段。去垢剂在一些可溶蛋白中也起到了一定的作用,提高了晶体的质量和结果的可重复性 ,促进了单晶的生长, 但具体的影响机制尚不明确。其可能原因是去垢剂的引入使结晶液滴中的蛋白分子更具有亲水性,使溶液中同质蛋白质分子增加。向左转|向右转
如要膜蛋白保持原来的结构应采用:非离子型去垢剂.
表面活性剂:通常由一个极性头和一个非极性尾组成,用于去除难溶于水的污渍
漂白剂:通常含次氯酸盐成分,原理为其氧化性
稀盐酸:用于去除碱性的污渍,如马桶中的结块
碳酸钠溶液:用于去除油渍,其原理为酯在碱溶液中水解,参见皂化反应

