
Chemical Name: | N-[(3,5-Difluorophenyl)acetyl]-L-alanyl-2-phenylglycine-1,1-dimethylethyl ester |
Molecular Weight: | 432.46 |
Formula: | C23H26F2N2O4 |
Purity: | ≥98% |
CAS#: | 208255-80-5 |
Solubility: | DMSO up to 100 mM |
Storage: | Powder:4oC 1 yearDMSO: 4oC3 month -20oC 1 year |
DAPT is a widely used γ-secretase inhibitor and serves as an inhibitor of Notch, a γ-secretase substrate. It can also cause a reduction in Aβ40 and Aβ42 levels in human primary neuronal cells (IC50 ~115 nM for total Aβ and ~200 nM for Aβ42) and in brain extracts, as well as in vivo. Since the Notch pathway is involved in development of many cell types, DAPT is used to modulate Notch activity in ESC/iPSC or adult stem cell differentiation studies.
How to Use:
- In vitro: DAPT is used at 10 µM final concentration in cell culture.
- In vivo: DAPT was orally dosed to mice at 100-200 mg/kg once per day or intraperitoneally dosed to mice at 10-100 mg/kg once per day.
Reference:
- 1. Lanz TA, et al. The gamma-secretase inhibitor N-[N-(3,5-difluorophenacetyl)-L-alanyl]-S-phenylglycine t-butyl ester reduces A beta levels in vivo in plasma and cerebrospinal fluid in young (plaque-free) and aged (plaque-bearing) Tg2576 mice.(2003) J Pharmacol Exp Ther. 305(3):864-71.
- 2. Dovey HF, et al. Functional gamma-secretase inhibitors reduce beta-amyloid peptide levels in brain. (2001) J Neurochem. 76(1):173-81.
- 3. Androutsellis-Theotokis A, et al. Notch signalling regulates stem cell numbers in vitro and in vivo. (2006) Nature 442(7104):823-6.
- 4. Crawford, T. and Roelink, H. The Notch Response inhibitor DAPT enhances neuronal differentiation in embryonic stem cell-derived embryoid bodies independently of Sonic Hedgehog Signaling. (2007) Dev Dyn. 236(3):886-92
- Product Specification:
DAPT_spec.pdf
- Product MSDS:
DAPT_MSDS.pdf
Products are for research use only. Not for human use.
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我做的是细胞因子的刺激和抑制某条通路后观察是否有影响,分组为空白组,空白+抑制剂,刺激组,刺激+抑制剂,最开始用的单因素方差分析,LSD-T和SNK-Q检验,但是同学说我这里面有两个处理因素,所以不能单因素方差分析,应该直接空白和空白+抑制,空白和刺激,刺激和刺激+抑制剂进行独立样本T检验,现在脑子是混乱的,拜托园子里的大神们帮我看看,感激不尽!!
天然产物,大多都有颜色,
存在干扰,多数情况下需要做样品的阴性对照,
尽量能用荧光的方法,
之前我们做过,将两个试剂盒的方法合并后,做的,
效果还可以
支原体培养则是取样后在培养基上培养,看有多少支原体菌落会长出,是比较直观和可信的结果。
总体来讲,这两种检查手段可信度都较高,结合一起,不仅可以可靠的知道有无解脲支原体感染,还能知道感染是否严重。
该试剂盒是一种时间分辨的荧光共振能量转移免疫分析,该反应是一个竞争免疫反应,即铕标的cAMP示踪复合物与体系中的cAMP竞争结合标有Alexa Fluor 647染料的cAMP抗体。铕标cAMP示踪复合物是通过Biotin标记的cAMP与铕标的抗生物素蛋白链菌素(streptavidin)与抗体的复合物紧密结合产生的。
当抗体结合到示踪剂上时,340nm的激发光激发铕标分子,导致能量转移到Alexa Fluor 647染料上,结果产生665nm的发射光。荧光的强度与样品中的cAMP含量成反比。
本试剂盒用于检测在GPCR激动剂刺激下活细胞或者细胞膜制备品产生的cAMP。对于偶联Gαs的受体,激动剂刺激导致665nm的荧光强度降低,而拮抗剂则可以逆转这一效应;对于偶联Gαi的受体,在激动剂刺激的同时用forskolin刺激cAMP产生,那么激动剂则抑制forskolin诱导的cAMP的生成,因此对照只给forskolin的细胞组可以通过665nm荧光强度的增加反应激动剂的效应。
该试剂盒的灵敏度很高,室温下反应在20h内是稳定的。本试剂盒适用于在384孔板中进行24μl的微量分析。
1. 姜黄素是一个典型的HAT抑制剂。
2. 针对P300: 在大约10年前,Cole和他的同事设计出了一种p300/CBP抑制剂,发表在nature杂志上。
希望能帮到你,望采纳!

