Dihydroethidium(DHE) 二氢乙锭(超氧化物阴离子荧光探针) |CAS 38483-26-0

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产品说明书

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已发表文献

产品描述

Hydroethidine也称为Dihydroethidium,是一种最常用的超氧化物阴离子荧光检测探针,能有效地检测活性氧类。这种染料可以自由地进入细胞,在细胞内超氧化物阴离子作用下脱氢形成溴化乙锭。溴化乙锭可以与RNADNA结合产生红色荧光。当细胞内的超氧化物阴离子水平较高时,产生的溴化乙锭较多,红色荧光就较强,反之则较弱。这样就可以用二氢乙锭进行超氧化物阴离子水平的检测。

该探针已经广泛地用于NK细胞中性粒细胞内皮细胞细胞HL60巨噬细胞的研究,并且作为一种重要的染料用于鉴定肿瘤中细胞的增殖和低氧性。

 

产品性质

产品名称(Product Name

Dihydroethidium (Hydroethidium)

CAS号(CAS NO.

38483-26-0

分子式(Molecular Formula

C21H21N3

分子量(Molecular Weight

315.41

激发和发射波长(Ex/Em

518 nm/610 nm

纯度( Purity )

≥90%

外观(Appearance

红色粉末

溶解性(Solubility

溶于DMSO

结构式(Structure

image.png

 

运输和保存方法

冰袋运输。粉末直接保存于-20℃,有效期2产品易被氧化,建议分装后-20℃避光密封保存,避免反复冻融,避光,保持干燥。

 

注意事项

1请勿吸入吞咽或者直接接触皮肤和眼睛。

2二氢乙锭容易氧化且见光易分解,一定要避光干燥保存

3)在没有细胞和外界诱导剂存在的情况下,溶解在培养液或者缓冲溶液中PBS/ HBSS/ HEPES的染料会发生水解,被空气或通过光诱导的方式氧化,而使溶液的荧光强度增加。

4)为了您的安全和健康,请穿实验服并戴一次性手套操作。

5)本产品仅用于科研用途,禁止用于人身上。

 

使用方法

1. 工作液的配制
本品以粉末形式提供,使用前需要经过短暂离心,用高纯度的DMSO制备成5~10 mM储液。分装后避光冻存于-20℃。使用前用缓冲液(PBS/ HBSS/ HEPES)稀释母液至所需工作浓度,通常5~20 μM就可以满足实验需求,具体的浓度要根据实验需要进行进一步的调整。


2. 染色
将细胞和染色液按照1:1的比例进行混合(例如,100 μL的细胞悬液加入100 μL的染色工作液),室温或37℃孵育60 min


3. 荧光显微镜观察
二氢乙锭本身为蓝色荧光,最大激发波长为370 nm,最大发射波长为420 nm,脱氢后与RNADNA结合产生红色荧光,最大激发波长为300 nm,最大发射波长为610 nm,实际观察时也可以使用518 nm作为激发波长。


客户使用本产品发表的科研文献(部分)

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[2] [1] Rlabc D, et al. Inhibition of ROS activity by controlled release of proanthocyanidins from mesoporous silica nanocomposites effectively ameliorates heterotopic tendon ossification[J]. Chemical Engineering Journal, 2021.    IF: 13.273

[3] Feng J, et al. AKAP1 contributes to impaired mtDNA replication and mitochondrial dysfunction in podocytes of diabetic kidney disease. Int J Biol Sci. 2022 Jun 13;18(10):4026-4042. doi: 10.7150/ijbs.73493. PMID: 35844803.  IF: 10.75

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[5] Qiao S, et al. Bergenin impedes the generation of extracellular matrix in glomerular mesangial cells and ameliorates diabetic nephropathy in mice by inhibiting oxidative stress via the mTOR/β-TrcP/Nrf2 pathway[J]. Free Radical Biology and Medicine, 2019, 145: 118-135.   IF: 7.376

[6] Che Y, et al. The Combination of Rhodosin and MMF Prolongs Cardiac Allograft Survival by Inhibiting DC Maturation by Promoting Mitochondrial Fusion. Oxid Med Cell Longev. 2022 Jul 9; 2022:7260305. PMID: 35855862.  IF: 7.31

[7] Hu J, et al. Inhibition of CACNA1H attenuates doxorubicin-induced acute cardiotoxicity by affecting endoplasmic reticulum stress[J]. Biomedicine & Pharmacotherapy, 2019, 120: 109475.   IF: 6.529

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[12] Wang K, et al. Icariin Prevents Extracellular Matrix Accumulation and Ameliorates Experimental Diabetic Kidney Disease by Inhibiting Oxidative Stress via GPER Mediated p62-Dependent Keap1 Degradation and Nrf2 Activation. Front Cell Dev Biol. 2020 Jul 17; 8:559. doi: 10.3389/fcell.2020.00559. PMID: 32766240; PMCID: PMC7379398.  IF5.186

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