- Description
- Additional Information
- Readable Documents
- Assay Principle
- Reviews
Key Benefits
- Cell permeable.
- No wash homogenous assay.
- Adaptable to High throughput assay platforms .
- Real time detection of NO activity.
- Applications – Flow Cytometry, Fluorescence Plate Reader, Fluorescence Microscopy
Additional information
Kit Size | 0.125mg, 0.25mg |
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Diaminofluorescein –2 Diacetate (DAF-2DA) is a non-fluorescent cell permeable reagent that can measure free Nitric Oxide (NO) and nitric oxide synthase (NOS) activity in living cells under physiological conditions. Once inside the cell the diacetate groups on the DFA-2DA reagent arehydrolyzed by cytosolic esterases thus releasing FAD-2 and sequestering the reagent inside the cell. Production of nitric oxide converts the non-fluorescent dye, DAF-2, to its fluorescent triaole derivative, DAF-2T.
DAF-2T can be observed by: excitation 488nm and measuring emission at 515nm.
Fig. 1. DAF-2DA, the non-fluorescent probe, enters the cells where cytosolic esterases hydrolysis the diacetate groups, releasing the non-fluorescent DAF-2 dye. DAF-2 then reacts with NO and O2 to produce DAF-2T, its triazole fluorescent derivative.
Fig. 2. Phase Contrast and fluorescent microscopic images of rat aorta-derived vascular smooth muscular cells loaded with DAF-2DA.
Document Title |
NOSProtocol |
NOS Datasheet |
msds.NOS |
Title | File | Link | Author(s) | Journal | Year; Edition:Pages |
Red wine consumption improves in vitro migration of endothelial progenitor cells in young, healthy individuals | Am J Clin Nutr 2010 92: 1 | July 2010; 161-169 |
Reference |
Direct evidence of NO production in rat hippocampus and cortex using a new fluorescent indicator: DAF-2 DA: H. Kojima, et al.; Neuroreport 9, 3345 (1998) Abstract |
Direct evidence of nitric oxide production from bovine aortic endothelial cells using new fluorescence indicators: diaminofluoresceins: N. Nakatsubo, etal.; FEBS Lett. 427, 263 (1998) Abstract |
Nitric Oxide Ameliorates Hydrophobic Bile Acid-induced Apoptosis in Isolated Rat Hepatocytes by Non-mitochondrial Pathways: E. Gumpricht, et al.; J. Biol.Chem. 277, 25823 (2002) Full Text; http://www.jbc.org/cgi/content/full/277/28/25823#SEC1 |
Development of a fluorescent indicator for nitric oxide based on the fluoroscein chromophore: H. Kojima, et al.; Chem. Pharm. Bull. 46, 373 (1998)Abstract |
Detection and imaging of nitric oxide with novel fluorescent indicators: diaminofluoresceins: H. Kojima, et al.; Anal. Chem. 70, 2446 (1998) Abstract |
Part# | Reagent | Temperature |
Part# 4006 | DAF-2DA, 1 Vial (NOS200-1) | 2-8C |
Part# 4006 | DAF-2DA, 2 Vials (NOS200-2) | 2-8C |
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首先,不否认它比大多数国产的试剂盒做得好,提取的纯度、方便度和量,都还很不错。
其次,它是日本的。so我觉得实验室用用天根的,就非常好了。拒绝日货,从实验室做起。
向左转|向右转
2.模板浓度测定:分光光度计或NanoDrop
3.逆转录:逆转录试剂盒(或者一步法试剂盒),这一步可以用普通PCR做,也可以用水域做。
4.荧光定量PCR试剂:通常有用SYBRGreenMix做的,但是这里建议你用EvaGreen做,灵敏度和平行性都要好于SYBRGreen,并且如果你那是ABI或者Stratagene的PCR如果用SYBRGreen还需要加一步Rox很麻烦。
5.其他:除了以上的那些还需要离心管、PCR管或板(Axygen反应比较好)、移液枪等,暂时就想到这么多。
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