
Overview |
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Ex/Em (nm) | 492/518 |
MW | 691.66 |
CAS # | N/A |
Solvent | DMSO |
Storage | F/D/L |
Category |
Enzyme Detection Peptidases and Proteases |
Related |
Cell Apoptosis Apoptosis and Cytotoxicity Biochemical Assays |
Spectrum | Advanced Spectrum Viewer |
1. General Solution Caspase Assays Using AMC, AFC, pNA, R110 and ProRed Substrates
1.1. Prepare a 10 mM stock solution in DMSO.
1.2. Prepare a 2X caspase substrate (50 µM) assay solution as the following:
50 µL substrate stock solution
100 µL DTT (1M)
400 µL EDTA (100 mM)
10 mL Tris Buffer (20 mM), pH =7.4
1.3. Mix equal volume of the caspase standards or samples with 2X caspase substrate assay solution (from Step 1.2), and incubate the solutions at room temperature for at least 1 hour.
1.4. Monitor the fluorescence using a fluorescence microplate reader, or absorbance using an absorbance microplate reader.
2. Cell Caspase Assays Using Cell-Permeable FMK Caspase Probes
2.1. Prepare a 2-5 mM stock solution in DMSO.
2.2. Treat cells as desired.
2.3. Prepare a 2X permeable caspase substrate (20 µM) assay solution by diluting the DMSO stock solution (from Step 2.1) in Hanks with 20 mM Hepes buffer (HHBS).
2.4. Mix equal volume of the treated cells with 2X caspase substrate assay solution (from Step 2.3), and incubate the cells in a 37°C, 5% CO2 incubator for at least1 hour.
2.5. Wash the cells with HHBS for at least once.
2.6. Monitor the fluorescence intensity by a flow cytometer, a fluorescence microscope or a fluorescence microplate reader.
3. Cell Caspase Assays Using Cell-Permeable FMK Caspase Probes (For #13470-13476 only)
3.1. Prepare a 250X stock solution by adding 50 µL DMSO into the vial.
3.2. Treat cells as desired.
3.3. Add 250 X DMSO stock solution (from Step 3.1) into the cell solution at a 1:250 ratio (such as 2 uL to 500 uL cells), and incubate the cells in a 37°C, 5% CO2 incubator for 1 hour.
3.4. Wash the cells with HHBS for at least once.
3.5. Monitor the fluorescence intensity by flow cytometer, fluorescence microscopy or fluorescent microplate reader.
References & Citations |
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1. Lawrence CP, Chow SC. (2012) Suppression of human T cell proliferation by the caspase inhibitors, z-VAD-FMK and z-IETD-FMK is independent of their caspase inhibition properties. Toxicol Appl Pharmacol.
2. Li YY, Yan CL. (2012) [Inhibition of elicitation of allergic contact dermatitis by topical use of Z-VAD-FMK, a broad caspase inhibitor: experiment in mice]. Zhonghua Yi Xue Za Zhi, 92, 1992.
3. Meslin B, Beavogui AH, Fasel N, Picot S. (2011) Plasmodium falciparum metacaspase PfMCA-1 triggers a z-VAD-fmk inhibitable protease to promote cell death. PLoS One, 6, e23867.
4. Muller I, Lamers MB, Ritchie AJ, Dominguez C, Munoz-Sanjuan I, Kiselyov A. (2011) Structure of human caspase-6 in complex with Z-VAD-FMK: New peptide binding mode observed for the non-canonical caspase conformation. Bioorg Med Chem Lett, 21, 5244.
5. Abaamrane L, Raffin F, Schmerber S, Sendowski I. (2011) Intracochlear perfusion of leupeptin and z-VAD-FMK: influence of antiapoptotic agents on gunshot-induced hearing loss. Eur Arch Otorhinolaryngol, 268, 987.
6. Equils O, Moffatt-Blue C, Ishikawa TO, Simmons CF, Ilievski V, Hirsch E. (2009) Pretreatment with pancaspase inhibitor (Z-VAD-FMK) delays but does not prevent intraperitoneal heat-killed group B Streptococcus-induced preterm delivery in a pregnant mouse model. Infect Dis Obstet Gynecol, 2009, 749432.
7. Li YY, Yan CL, Xu W. (2008) [Attenuation of allergic contact dermatitis by Z-VAD-FMK, a broad caspase inhibitor: experiment with mice]. Zhonghua Yi Xue Za Zhi, 88, 3153.
8. Witte MD, Descals CV, de Lavoir SV, Florea BI, van der Marel GA, Overkleeft HS. (2007) Bodipy-VAD-Fmk, a useful tool to study yeast peptide N-glycanase activity. Org Biomol Chem, 5, 3690.
9. Heng BC, Clement MV, Cao T. (2007) Caspase inhibitor Z-VAD-FMK enhances the freeze-thaw survival rate of human embryonic stem cells. Biosci Rep, 27, 257.
10. Vejux A, Lizard G, Tourneur Y, Riedinger JM, Frouin F, Kahn E. (2007) Effects of caspase inhibitors (z-VAD-fmk, z-VDVAD-fmk) on Nile Red fluorescence pattern in 7-ketocholesterol-treated cells: investigation by flow cytometry and spectral imaging microscopy. Cytometry A, 71, 550.
AAT Bioquest AAT Bioquest是一家位于美国的生物公司,前身为ABD Bioquest,总部位于加利福尼亚州。专门从事光学检测技术十多年,一直致力于光谱学检测领域技术的创新和突破。其独特的光学检测技术,综合了化学、生物学和信息学等各个领域的研究,引领了比色、荧光和发光技术新一代光学探针的浪潮。AAT Bioquest在全球拥有强大的经验丰富的专业分销商网络,为从小型研究机构到《财富》500强企业的各类客户提供卓越的产品和定制服务。
美国AATBioquestInc.(前身是ABDBioquest,Inc.)是一家为从事生命科学研究、诊断研发及药物开发的科学家研发、生产和销售生物分析研究试剂和试剂盒的公司。公司致力于光谱学检测领域,包括吸收(颜色),荧光和发光技术。AATBioquest的产品帮助全世界的科学家和生物医药研究者更好的了解生物化学,免疫学,细胞生物学和分子生物学等领域。AATBioquest会不断介绍新产品,快速的丰富各个领域的产品。
1)我们提供反应荧光探针和发光探针,生物素和端粒酶能够应用于标记药物小分子和生物聚合物,如蛋白、核酸以及其他碳水化合物;2)我们研究并生产荧光和发光探针用于检测蛋白,核酸和活细胞。3)我们不断的推出新型的荧光和发光探针用于检测多种酶,特别是检测水解酶和氧化还原酶类;4)我们致力于开发用于信号转导研究的试剂;5)我们提供生理和神经探针,特别是钙离子指示剂和膜电位探针。
作为AATBioquestInc.的中国区域代理,艾美捷科技为中国客户提供光谱学检测领域,包括吸收(颜色),荧光和发光技术等全系列解决方案。我们也将一如既往更加努力为国内用户提供快捷、方便的高质量产品,同时更为您售前售后全面技术支持。
AATBioquest,Inc.(formerlyABDBioquest,Inc.)develops,manufacturesandmarketsbioanalyticalresearchreagentsandkitstoscientistsengagedinlifesciencesresearch,diagnosticR&Danddrugdiscovery.Wespecializeintheareaofphotometricdetectionsincludingabsorption(color),fluorescenceandluminescencetechnologies.TheCompany"sproductsenablescientistsandbiomedicalresearcherstobetterunderstandbiochemistry,immunology,cellBIOLOGyandmolecularbiology.AATBioquestconstantlyintroducesnewproducts,andoffersarapidlyexpandinglistofproductsthataregroupedintoseveralproductlines.
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分子生物学实验的染料主要涉及到核酸染料和蛋白质染料.核酸染料主要有EB(溴化乙锭,高致癌性),goldview,sybr green(实时定量PCR时常用染料).这些染料可以和核酸双链分子特异性结合发出强荧光而被检测到.蛋白质染料最常用的是考马斯亮蓝 R-250,硝酸银.其中硝酸银有时也用于核酸染色.
染料分为天然染料和人工染料两种。天然染料有胭脂虫红、地衣素、石蕊和苏木素等,它们多从植物体中提取得到,其成分复杂,有些至今还未搞清楚。目前主要采用人工染料,也称煤焦油染料,多从煤焦油中提取获得,是苯的衍生物。多数染料为带色的有机酸或碱类,难溶于水,而易溶于有机溶剂中。为使它们易溶于水,通常制成盐类。
染料可按其电离后染料离子所带电荷的性质,分为酸性染料、碱性染料、中性(复合)染料和单纯染料四大类。 标本干燥后即进行固定,固定的目的有三个:
1)杀死微生物,固定细胞结构。
2)保证菌体能更牢的粘附在载玻片上,防止标本被水冲洗掉。
3)改变染料对细胞的通透性,因为死的原生质比活的原生质易于染色。
健那绿——高中唯一一个活体染色剂。染线粒体的,染成蓝绿色
产品主要应用:点击化学(Clickchemistry)、蛋白质组学研究中的双向荧光差异凝胶电泳(2DDIGE)和实时荧光定量PCR(RealtimePCR)。
氨基类染料是包含自由氨基的活性染料,染料可与活化羧酸衍生物和其他亲电子的试剂结合。比如:氨基与EDC-活化的羧基结合。
相关产品如下:
中文名英文名产品编号分子结构Cy7.5胺Cy7.5amineAGF1350A[img]/KindEditor_4.0.1/attached/image/20130704/20130704110804_5250.jpg[/img]Cy5胺Cy5amineAGF1332A[img]/KindEditor_4.0.1/attached/image/20130704/20130704110715_7750.jpg[/img]相似系列产品:
抗体、核酸、蛋白质等生物分子标记染料
羰基活性荧光染料
巯基反应性染料
羧酸类染料
请各位大侠给予帮助!!
谢谢!!
而且样品中的无水硫酸钠未变色,而做标准曲线的五个和空白对照的变为蓝色了,请高手指教,多谢!
还有,是否变蓝对测定结果有影响吗?
谢了哈
欢迎你!请下次规范发贴:)
2、苏丹三 脂肪 橙红
3、苏丹四 脂肪 红
4、双缩脲 蛋白质 紫
5、龙胆紫 染色质 紫
6、碘 淀粉 蓝
7、健那绿 线粒体 绿
8、甲基绿 DNA 绿
9、吡罗红 RNA 红
10、溴麝香草酚蓝 CO2 由蓝变绿再变黄
11、重铬酸钾 酒精 酸性条件下由橙色变成灰绿
12、醋酸洋红(龙胆紫、改良苯酚品红) 染色质 红
13、台盼蓝 检验活死细胞 死细胞会被染成蓝色(不常用)
取片剂一片,照溶出度测定法(中国药典2000年版二部附录ⅩC第三法),以水250ml为溶剂,转速为每分钟50转,依法操作,分别经15、30、45、60、75、210分钟取溶液滤过,精密量取续滤液5ml于分液漏斗中,加入pH7.4磷酸盐缓冲液5ml,5ml0.3%溴麝香草酚蓝溶液,用15ml氯仿分两次萃取,合并萃取液,加入0.4g无水硫酸钠,照分光光度法(中国药典2000年版二部附录ⅥA),在410nm波长处测得溶出A值。现15、30、45、60、75、210分钟溶出A值分别为0.0413、0.0544、0.0437、0.0479、0.0394、0.0302。(测定吸收度偏小是否不准,有影响。)
请各位站友指教。

