產(chǎn)品描述
Hydroethidine也稱為Dihydroethidium,是一種最常用的超氧化物陰離子熒光檢測探針,能有效地檢測活性氧類。這種染料可以自由地進(jìn)入細(xì)胞,在細(xì)胞內(nèi)超氧化物陰離子作用下脫氫形成溴化乙錠。溴化乙錠可以與RNA或DNA結(jié)合產(chǎn)生紅色熒光。當(dāng)細(xì)胞內(nèi)的超氧化物陰離子水平較高時,產(chǎn)生的溴化乙錠較多,紅色熒光就較強(qiáng),反之則較弱。這樣就可以用二氫乙錠進(jìn)行超氧化物陰離子水平的檢測。
該探針已經(jīng)廣泛地用于NK細(xì)胞、中性粒細(xì)胞、內(nèi)皮細(xì)胞、細(xì)胞HL60和巨噬細(xì)胞的研究,并且作為一種重要的染料用于鑒定腫瘤中細(xì)胞的增殖和低氧性。
產(chǎn)品性質(zhì)
產(chǎn)品名稱(Product Name) |
Dihydroethidium (Hydroethidium) |
CAS號(CAS NO.) |
38483-26-0 |
分子式(Molecular Formula) |
C21H21N3 |
分子量(Molecular Weight) |
315.41 |
激發(fā)和發(fā)射波長(Ex/Em) |
518 nm/610 nm |
純度( Purity ) |
≥90% |
外觀(Appearance) |
紅色粉末 |
溶解性(Solubility) |
溶于DMSO |
結(jié)構(gòu)式(Structure) |
|
運(yùn)輸和保存方法
冰袋運(yùn)輸。粉末直接保存于-20℃,有效期2年。產(chǎn)品易被氧化,建議分裝后-20℃避光密封保存,避免反復(fù)凍融,避光,保持干燥。
注意事項
1)請勿吸入、吞咽或者直接接觸皮膚和眼睛。
2)二氫乙錠容易氧化且見光易分解,一定要避光干燥保存。
3)在沒有細(xì)胞和外界誘導(dǎo)劑存在的情況下,溶解在培養(yǎng)液或者緩沖溶液中(PBS/ HBSS/ HEPES)的染料會發(fā)生水解,被空氣或通過光誘導(dǎo)的方式氧化,而使溶液的熒光強(qiáng)度增加。
4)為了您的安全和健康,請穿實驗服并戴一次性手套操作。
5)本產(chǎn)品僅用于科研用途,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,使用前需要經(jīng)過短暫離心,用高純度的DMSO制備成5~10 mM儲液。分裝后避光凍存于-20℃。使用前用緩沖液(PBS/ HBSS/ HEPES)稀釋母液至所需工作濃度,通常5~20 μM就可以滿足實驗需求,具體的濃度要根據(jù)實驗需要進(jìn)行進(jìn)一步的調(diào)整。
2. 染色
將細(xì)胞和染色液按照1:1的比例進(jìn)行混合(例如,100 μL的細(xì)胞懸液加入100 μL的染色工作液),室溫或37℃孵育60 min。
3. 熒光顯微鏡觀察
二氫乙錠本身為藍(lán)色熒光,最大激發(fā)波長為370 nm,最大發(fā)射波長為420 nm,脫氫后與RNA或DNA結(jié)合產(chǎn)生紅色熒光,最大激發(fā)波長為300 nm,最大發(fā)射波長為610 nm,實際觀察時也可以使用518 nm作為激發(fā)波長。
客戶使用本產(chǎn)品發(fā)表的科研文獻(xiàn)(部分)
[1] Feng L, et al. Neutrophil-like Cell-Membrane-Coated Nanozyme Therapy for Ischemic Brain Damage and Long-Term Neurological Functional Recovery. ACS Nano. 2021 Feb 23;15(2):2263-2280. doi: 10.1021/acsnano.0c07973. Epub 2021 Jan 11. PMID: 33426885. IF: 15.881
[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
[4] Chen L, et al. Therapeutic effect of SIRT3 on glucocorticoid-induced osteonecrosis of the femoral head via intracellular oxidative suppression. Free Radic Biol Med. 2021 Nov 20; 176:228-240. PMID: 34260898. IF: 7.376
[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
[8] Lin Z, et al. Eicosapentaenoic Acid-Induced Autophagy Attenuates Intervertebral Disc Degeneration by Suppressing Endoplasmic Reticulum Stress, Extracellular Matrix Degradation, and Apoptosis. Front Cell Dev Biol. 2021 Nov 4; 9:745621. doi: 10.3389/fcell.2021.745621. PMID: 34805156; PMCID: PMC8599281. IF: 6.684
[9] Chen L, et al. Apelin-13 induces mitophagy in bone marrow mesenchymal stem cells to suppress intracellular oxidative stress and ameliorate osteoporosis by activation of AMPK signaling pathway. Free Radic Biol Med. 2021 Feb 1; 163:356-368. doi: 10.1016/j.freeradbiomed.2020.12.235. Epub 2020 Dec 30. PMID: 33385540. IF: 6.17
[10] Li D, et al. Cereulide Exposure Caused Cytopathogenic Damages of Liver and Kidney in Mice. Int J Mol Sci. 2021 Aug 24;22(17):9148. doi: 10.3390/ijms22179148. PMID: 34502057; PMCID: PMC8431326. IF:5.924
[11] Pan B, et al. Azilsartan Suppresses Osteoclastogenesis and Ameliorates Ovariectomy-Induced Osteoporosis by Inhibiting Reactive Oxygen Species Production and Activating Nrf2 Signaling. Front Pharmacol. 2021 Nov 26;12:774709. doi: 10.3389/fphar.2021.774709. PMID: 34899338; PMCID: PMC8662525. IF:5.811
[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. IF:5.186
[13] Zhu L, et al. The critical role of RasGRP4 in the growth of diffuse large B cell lymphoma. Cell Commun Signal. 2019 Aug 13;17(1):92. doi: 10.1186/s12964-019-0415-6. PMID: 31409422; PMCID: PMC6693169. IF:5.128
HB220909