TPE-MI Tetraphenylethene maleimide|cas:1245606-71-6|西域试剂

TPE-MI Tetraphenylethene maleimide,98.54%

产品编号：Bellancom-143218| CAS NO：1245606-71-6| 分子式：C₃₁H₂₃NO₂| 分子量：441.52

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货号	价格	库存与货期
Bellancom-143218	￥1500.00	杭州北京（现货）
Bellancom-143218	￥2400.00	杭州北京（现货）
Bellancom-143218	￥4800.00	杭州北京（现货）
Bellancom-143218	￥7700.00	杭州北京（现货）
Bellancom-143218	￥12500.00	杭州北京（现货）

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TPE-MI Tetraphenylethene maleimide

产品介绍

TPE-MI (Tetraphenylethene maleimide) 在通过马来酰亚胺与硫醇结合之前本质上是非荧光的。TPE-MI 荧光在标记游离半胱氨酸硫醇时被激活，该硫醇通常埋在展开时暴露的球状蛋白质的核心中。TPE-MI 可用于测量细胞未折叠蛋白质负荷。TPE-MI 可以报告亨廷顿病诱导多能干细胞模型中的蛋白质平衡失衡，以及在形成可见聚集物之前转染突变亨廷顿外显子1的细胞。TPE-MI 还检测双氢青蒿素研究疟疾寄生虫后的蛋白质损伤。储存方式：避光。

生物活性

TPE-MI (Tetraphenylethene maleimide) is a thiol probe for measuring unfolded protein load and proteostasis in cells. TPE-MI can report imbalances in proteostasis in induced pluripotent stem cell models of Huntington disease, as well as cells transfected with mutant Huntington exon 1 before the formation of visible aggregates. TPE-MI also detects protein damage following dihydroartemisinin research of the malaria parasitesPlasmodium falciparum . Storage: protect from light.

体外研究

TPE-MI is inherently non-fluorescent until it is conjugated to a thiol via the maleimide. TPE-MI fluorescence is activated upon labelling free cysteine thiols, normally buried in the core of globular proteins that are exposed upon unfolding.
TPE-MI (50 µM; 0-60 min) exhibits a homogeneous cytoplasmic labelling pattern in live HeLa cells, with a lower level of labelling in the nucleus and apparent concentration in the region of the ER, which was anticipated as a major location for protein synthesis and folding.
At the high expression level, the mutant 97Q form of Httex1 was associated with an elevated TPE-MI fluorescence signal relative to a non-disease-causing 25Q form of Httex1.
TPE-MI consists of the aggregation-induced emission (AIE) fluorogen tetraphenylethane (TPE) and the thiol-reactive group maleimide (MI), thereby possessing both AIE phenomenon and selective thiol reactivity.

西域 has not independently confirmed the accuracy of these methods. They are for reference only.

体内研究

性状

Solid

溶解性数据

In Vitro:

DMSO : 44.15 mg/mL (100.00 mM; Need ultrasonic)

配制储备液

浓度溶剂体积质量	1 mg	5 mg	10 mg

1 mM	2.2649 mL	11.3245 mL	22.6490 mL
5 mM	0.4530 mL	2.2649 mL	4.5298 mL
10 mM	0.2265 mL	1.1325 mL	2.2649 mL

请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。
储备液的保存方式和期限：-80°C, 6 months; -20°C, 1 month。-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。

In Vivo:

请根据您的实验动物和给药方式选择适当的溶解方案。以下溶解方案都请先按照 In Vitro 方式配制澄清的储备液，再依次添加助溶剂：

——为保证实验结果的可靠性，澄清的储备液可以根据储存条件，适当保存；体内实验的工作液，建议您现用现配，当天使用；以下溶剂前显示的百
分比是指该溶剂在您配制终溶液中的体积占比；如在配制过程中出现沉淀、析出现象，可以通过加热和/或超声的方式助溶

1.

请依序添加每种溶剂： 10% DMSO 40% PEG300 5% Tween-80 45% saline
Solubility: ≥ 2.5 mg/mL (5.66 mM); Clear solution

此方案可获得 ≥ 2.5 mg/mL (5.66 mM，饱和度未知) 的澄清溶液。
以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中，混合均匀；向上述体系中加入50 μL Tween-80，混合均匀；然后继续加入 450 μL生理盐水定容至 1 mL。
将 0.9 g 氯化钠，完全溶解于 100 mL ddH₂O 中，得到澄清透明的生理盐水溶液