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- 文献和实验
- 技术资料
- 保存条件:
Powder: -20°C, 3 years; 4°C, 2 years. In solvent: -80°C, 6 months; -20°C, 1 month.
- 库存:
货期:1-2天
- 供应商:
MedChemExpress LLC
- CAS号:
1456632-40-8
- 规格:
10 mM * 1 mL/1 mg/5 mg/10 mg/25 mg/50 mg/100 mg
| 规格: | 10 mM * 1 mL | 产品价格: | ¥1679.0 |
|---|---|---|---|
| 规格: | 1 mg | 产品价格: | ¥568.0 |
| 规格: | 5 mg | 产品价格: | ¥1250.0 |
| 规格: | 10 mg | 产品价格: | ¥2000.0 |
| 规格: | 25 mg | 产品价格: | ¥4000.0 |
| 规格: | 50 mg | 产品价格: | ¥6400.0 |
| 规格: | 100 mg | 产品价格: | ¥9100.0 |
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SH-4-54
CAS No. : 1456632-40-8
MCE 国际站:SH-4-54
产品活性:SH-4-54是 STAT 的抑制剂,与 STAT3 和 STAT5 结合的 KDs 值分别为300,464 nM。
研究领域:JAK/STAT Signaling | Stem Cell/Wnt
作用靶点:STAT
In Vitro: SH-4-54 potently kills glioblastoma brain cancer stem cells (BTSCs) and effectively suppresses STAT3 phosphorylation and its downstream transcriptional targets at low nM concentrations.SH-4-54 shows unprecedented cytotoxicity in human BTSCs, displays no toxicity in human fetal astrocytes, potently suppresses pSTAT3 with nanomolar IC50s, inhibiting STAT3's downstream targets, and shows no discernible off-target effects at therapeutic doses.
In Vivo: SH-4-54 exhibits blood-brain barrier permeability potently controls glioma tumor growth, and inhibits pSTAT3 in vivo. SH-4-54 demonstrates the power of STAT3 inhibitors for the treatment of BTSCs and validates the therapeutic efficacy of a STAT3 inhibitor for GBM clinical application.SH-4-54 decreases pSTAT3 expression in tumor cells of treated mice. SH-4-54 appears to decrease proliferation and increase apoptosis of treated tumors.
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文献和实验巯(SH)基 SH-group,sulfhydryl group
生理上重要的物质如辅酶 A、泛酰巯基乙胺、二氢硫辛酸( dihydrolipoic acid)、还原型的谷胱甘肽、半胱氨酸等均有 SH基,在酶或激素中 SH基为不可缺的组成部分。此基团极富反应性,用特异的试剂( SH试剂)或显色反应很容易检验出来。含于蛋白质中的 SH基,由于其存在状态而反应性不同,亦有蛋白质变性后才检验出 SH基。以 SH基为必需基团的酶称为 SH酶。用 SH试剂封阻 SH基能使酶失活,但是能为还原型的谷胱甘肽、半胱氨酸、二硫苏糖醇等再活化或保持稳定。 SH基容易
在蛋白质中含有 SH基的半胱氨酸残基,而 SH基为催化作用所必需的酶。一般认为, SH基作为活性中心,参与和底物、中间产物、辅酶或金属离子的结合。氧化酶、转移酶、水解酶等绝大多数种类的许多数酶均属此。加入水银等重金属离子、氧化或与碘乙酸或顺丁烯二酞亚胶结合可抑制其活性,因此,根据有机汞试剂——对氯汞苯甲酸等的抑制,以及加入 SH化合物(半胱氨酸等)使其活性恢复就成为 SH酶的指标。
为与 SH 基进行反应,而抑制其功能的试剂。从作用方式来看,大致可分为三类:( 1 )氧化剂:亚碘酰苯甲酸( o-iodosobenzoic acid )、 5 , 5 ′ - 二硫基二硝基苯甲酸( DTNB ,亦称 Ellman 试剂)、 4 , 4 ′ - 二硫基吡啶;胱氨酸;氧化型谷胱苷肽;连四硫酸( tetrathionic acid )、脱氢抗坏血酸; 2 , 6- 二氯酚靛酚( 2 , 6-dichlorophenolindophenol )等。( 2 )形成
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