
O4I1potent Oct3/4 inducer |
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)
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Chemical structure


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Cas No. | 175135-47-4 | SDF | Download SDF |
Chemical Name | 2-(4-((4-methoxybenzyl)oxy)phenyl)acetonitrile | ||
Canonical SMILES | COC1=CC=C(COC2=CC=C(CC#N)C=C2)C=C1 | ||
Formula | C16H15NO2 | M.Wt | 253.3 |
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. |
O4I1 is a potent Oct3/4 inducer implicated in promoting the expression and stabilization of Oct3/4. O4I1 can enhance the transcriptional activity of Oct3/4 in a variety of human somatic cells. Oct3/4, also known as POU5F1 and Oct4, is a transcription factor which is essential for self-renewal and pluripotency of embryonic stem cells. Oct3/4 is specifically expressed in the ES cells, epiblast, preimplantation embryos, and germ cells, et al [1].
When treated the synthesized cDNA from RNA isolated from the HEK293 cells with 10 µM and 20 µM O4I1 for 72 hrs, the Oct3/4 mRNA levels increased about 2.5- and 4-fold respectively. In human adult primary fibroblast (HF) and human neonatal foreskin fibroblast (HFF) cell lines, treatment with 10 µM O4I1 increased the gene and protein expression level of Oct3/4 after 72 hrs incubation in HF cells and 7 days in HFF cells. The derivatives of O4I1 such as compound 2, showed a time-dependent activation of Oct3/4 and markedly elevated the efficiency of Oct3/4 induction [1].
Reference:Cheng X, Dimou E, Alborzinia H, et al. Identification of 2-[4-[(4-Methoxyphenyl) methoxy]-phenyl] acetonitrile and Derivatives as Potent Oct3/4 Inducers[J]. Journal of medicinal chemistry, 2015, 58(12): 4976-4983.
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荧光标记物常用的有几十种,比如FITC, PE等等,各个生产厂家还有自己的专利产品
探针
ddH2O36.25ul
buffer(瓶3)5ul
核苷酸混合液(含DIG-dUTP)(瓶2)2.5ul
dNTPStockSolution(瓶4)2.5ul
引物F1ul(10pmol/ul)
R1ul(10pmol/ul)
酶(瓶1)0.75ul
DNA1ul(100pg)
程序:35个循环,退火温度55度。
第一次通过探针标记得到了相应的PCR标记产物,亮度和对照相当,片段大小比标记的探针模板大,证明整个过程应该没有问题。
但一个月后重新用相同的体系,相同的程序,只是探针模板的量不同却什么都扩不出来。不知道问题出在哪了!
TUNEL的缺点是:1),操作要求高,组织样本需要固定(即使是培养细胞,也需要固定),不恰当的固定方法对实验结果影响很大,导致背景过高或者信号过弱,因此实验结果重复性不好;有的人花上半年做一个体内的TUNEL是一点都不奇怪的。2),大部分诱导凋亡的药物也引起DNA损伤,从而产生DNA断裂,易引入假阳性;3)凋亡晚期细胞基因组大量降解,导致TUNEL标记反而减少,因此此法反应的是早期凋亡比例,不能严格反应凋亡比例,属于半定量研究。
尽管有如此多缺点,但由于其是目前为数不多的能原位标记凋亡细胞的方法,因此用于组织体内凋亡研究仍然是首选。但体外细胞实验研究,很少用此法。
凋亡检测中,TUNEL并不是过时的方法,现在研究凋亡的文献仍然常见。而且相反,还比以前多一点,因为现在体内实验越来越多了,甚至线虫的凋亡研究,都用TUNEL。
凋亡研究中,的确有几种方法过时了,当然是因为有替代方案了,比如DNAladder,电镜。至于AnnexinV是不能用来和TUNEL一起评论的,前者用于细胞,而且主要是悬浮细胞,后者主要用于组织。虽然有人也做镜下的AnnexinV观察,TUNEL的细胞staining,但这都不是主流。
回到lz的原帖,的确如大家所言,做贴壁细胞,不推荐用TUNEL。如果是经典凋亡途径,只是确定比例,用最经典,最常用的subG1法即可,如果是不确定是否是凋亡,用AnnexinV,不过贴壁细胞用此法,要注意消化时间。
那为什么SFDA不批准CA199CEAAFP等检测试剂盒作为癌症检测的手段呢?
想请问下那个公司有专门的蛋白质荧光标记试剂盒出售。最好的是CY5的,我准备做三标。性价比越高越好
那些做过的前辈们指导一下。

