
ML-264Krüppel-like factor 5 (KLF5) inhibitor |
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)
- Datasheet
Chemical structure


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Cas No. | 1550008-55-3 | SDF | Download SDF |
Chemical Name | (2E)-3-(3-chlorophenyl)-N-[2-[methyl(tetrahydro-1,1-dioxido-2H-thiopyran-4-yl)amino]-2-oxoethyl]-2-propenamide | ||
Canonical SMILES | ClC1=CC=CC(/C=C/C(NCC(N(C)C2CCS(CC2)(=O)=O)=O)=O)=C1 | ||
Formula | C17H21ClN2O4S | M.Wt | 384.9 |
Solubility | ≤10mg/ml in DMSO;15mg/ml in dimethyl formamide | 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. |
ML264, a potent and selective inhibitor of kruppel-like factor 5 (KLF5), inhibits the growth of colorectal cancer. ML264 is chemically stable, unreactive with glutathione, has suitable aqueous solubility, is highly stable to mouse, rat, and human hepatic microsomes, making it a good candidate for in vivo anticancer studies [1].
ML264 inhibits the MAPK pathway by reducing EGR1 and KLF5 levels. KLF5 is a zinc finger-containing transcription factor which is highly expressed in rapidly dividing intestinal epithelial cells. KLF5 binds to GC-rich sequences in promoters of numerous genes, such as cyclin D1, cyclin B1/Cdc2, and integrin-linked kinase. KLF5 mediates the transforming effects of oncogenic H-Ras and plays an important role in regulating colon cancer pathogenesis [1].
In vitro: In a cell-based assay for proliferation of DLD-1 cells, the IC50 of ML264 was 29 nM. In a cell-based luciferase assay, the IC50 of ML264 was 81 nM. ML264 showed no cytotoxicity in the IEC-6 control cell line with an IC50 of >50 μM. The IC50 of ML264 was 560 nM, 130 nM and 130 nM in HCT116, HT29 and SW620, respectively. ML264 significantly reduced KLF5 expression. ML264 didn’t inhibit kinases associated with the KLF5 pathway. ML264 induced death of most colon cancer cell lines, with cytotoxicity toward several other tumor cell lines as well [1].
In vivo: In an established xenograft mouse model of colon cancer, ML264 efficiently inhibited growth of the tumor within five days treatment. This effect was caused by a significant reduction in proliferation and that ML264 potently inhibited the expression of KLF5 and EGR1, a transcriptional activator of KLF5 and EGR1, a transcriptional activator of KLF5 [2].
References:[1]. Bialkowska A, Crisp M, Madoux F, et al. ML264: An Antitumor Agent that Potently and Selectively Inhibits Krüppel-like Factor Five (KLF5) Expression: A Probe for Studying Colon Cancer Development and Progression[J]. 2013.[2]. de Sabando A R, Wang C, He Y, et al. ML264, A Novel Small-Molecule Compound That Potently Inhibits Growth of Colorectal Cancer[J]. Molecular cancer therapeutics, 2016, 15(1): 72-83.
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PCR(聚合酶链式反应)是利用DNA在体外摄氏95°高温时变性会变成单链,低温(经常是60°C左右)时引物与单链按碱基互补配对的原则结合,再调温度至DNA聚合酶最适反应温度(72°C左右),DNA聚合酶沿着磷酸到五碳糖(5'-3')的方向合成互补链。
恒温PCR和实时荧光定量PCR的不同,是不同在实时荧光定量PCR的系统中加入了荧光染料(SYBR Green 或Taqman 探针等等)。以SYBR Green为例,这种染料可以结合在双链的DNA上,当PCR不断进行时,每一次退火生成的双链DNA也在增加,荧光染料结合也越多,荧光也越强。在机器中有一个探测荧光的探头,可以定量检测荧光的强度,转换成数值。这样就可以实时记录反映体系中DNA的反应情况。
荧光PCR更有优势,因为荧光PCR灵敏度高于恒温PCR,同样价格也高一些。
请教园友:
一般做mRNA表达的时候,需要注意提取的RNA中是否有DNA污染,或者通过设计跨内含子的引物来解决。那么,检测MmiRNA的时候,需要注意RNA中DNA污染的问题么?
荧光定量PCR较普通PCR不同的一点就是可以实时检测PCR扩增产物,从而可进行绝对定量或者相对定量。
荧光定量PCR较普通PCR不同的一点就是可以实时检测PCR扩增产物,从而可进行绝对定量或者相对定量。
一般都是相对量。则用delta delta CT方法来计算。举例如下:
对照组基因A的CT值为20, 内参(比如βactin)CT值15。实验组基因A CT值18,内参CT值14。
首先算加样量:delta CT=15-14=1。2的1次方是2。也就是说实验组的加样量是对照组的2倍。
基因A: delta CT=20-18=2。2的2次方是4。也就是说基因A的量在实验组是对照组的4倍。但是由于加样量是2倍,所以4处以2=2,最后的相对量是2倍。
几点注意:
1。必须确定扩增的特异性
2。 只有相同目标的CT值才能相减(扩增效率有可能不同)
3。 2的某次方只是理论值,实际扩增效率低于2。
4。 最好不用Syber Green
C代表的是cycle,循环数目,T代表的是threshold,阈值。
所以表达量越少的话,需要越多的循环才能扩增出来。也就是CT值越高

