| Cyclosomatostatinsomatostatin receptor antagonist |

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. | 84211-54-1 | SDF | Download SDF |
| Synonyms | N/A | ||
| Chemical Name | (3S,6R,9S,12S)-9-((1H-indol-3-yl)methyl)-6-(4-aminobutyl)-12-benzyl-3-((R)-1-(benzyloxy)ethyl)-1,4,7,10,13-pentaazacycloicosane-2,5,8,11,14-pentaone | ||
| Canonical SMILES | O=C([C@@H](CCCCN)NC([C@H](CC1=CNC2=CC=CC=C12)NC([C@H](CC3=CC=CC=C3)NC4=O)=O)=O)N[C@H](C(NCCCCCC4)=O)[C@@H](C)OCC5=CC=CC=C5 | ||
| Formula | C44H57N7O6 | M.Wt | 779.98 |
| Solubility | Soluble to 1 mg/ml in 20% ethanol / H2O | Storage | Store at -20°C |
| Physical Appearance | White lyophilised 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. | ||
IC50: N/A
Cyclosomatostatin is a non-selective somatostatin receptor antagonist.
Somatostatin is a regulatory hormone or tissue factor playing an inhibitory role in the normal regulation of several organ systems including hypothalamus and pituitary gland, central nervous system, gastrointestinal tract as well as pancreas.
In vitro: Although cyclosomatostatin could fully block the effect of somatostatin, it only partially reversed the inhibitory effect of cortistatin, a new anti-inflammatory peptide. This observation was further supported by the fact that cyclosomatostatin reversed the antiinfl ammatory effect of somatostatin and octreotide in vitro completely, while only partially reversing the effect of cortistatin [1].
In vivo: The effect of cortistatin was found to be dose dependent, with dose as low as 0.5 nmol (50 μg/kg) being partially protective. In contrast, cyclosomatostatin, somatostatin as well as octreotide were not protective [1].
Clinical trial: As the precursor of cyclosomatostatin, somatostatin has already been introduced in the clinical practice in some macrophage populations. Somatostatin shows protective effect in certain inflammatory disorders including pancreatitis and liver injury. However, somatostatin is not protective in lethal septic shock [1].
Reference:[1] Gonzalez-Rey E,Chorny A,Robledo G,Delgado M. Cortistatin, a new antiinflammatory peptide with therapeutic effect on lethal endotoxemia. J Exp Med.2006 Mar 20;203(3):563-71.
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推荐了解“主细胞库”“工作细胞库”这两个名词。
① 在构建载体时,目的基因直接整合到细胞染色体组上,最好不要通过先瞬转在筛选稳定细胞株的这种方法,因为转染效率没有保证
② 高表达载体的构建,哺乳动物表达量一直是它自身的缺点,最好根据高表达载体定向的驯化细胞,提高蛋白表达量
③ 细胞的选择,筛选稳定细胞株我们常用的细胞是CHO,中国仓鼠卵巢细胞,由于CHO具有诸多的优点因此适合用于筛选稳定细胞株,而HEK293细胞则常用于瞬时转染
④ 后期的筛选,双抗预防污染,筛选细胞的时候抗生素浓度一定要做预实验,而且转染的时候不能有抗生素,关于细胞转染 稳定细胞系构建的相关理论
先提取RNA,反转录成cDNA,然后根据目的基因设计PCR引物,通过半定量RT-PCR确定目的基因表达.
正因为检测的是mRNA,所以要先反转录成cDNA才能PCR.
建立稳定细胞株,一般是根据不同基因载体中所含有的抗性标志选用相应的药物对靶...专注整体实验·服务生命科学已开展了数千个实验外包项目

