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Resazurin Cell Viability Assay Kit

Resazurin Cell Viability Assay offers a simple, rapid, reliable, sensitive, safe and cost-effective measurement of cell viability. This kit performs at least as well as other commercial resazurin-based cell proliferation assay kits such as alamarBlue® or CellTiter-Blue®.

Resazurin, Sodium Salt
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30025-1, - 30025-2View allHide

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25 mL, 100 mL

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100 mL
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Product Description

Resazurin Cell Viability Assay offers a simple, rapid, reliable, sensitive, safe and cost-effective measurement of cell viability. This kit performs at least as well as other commercial resazurin-based cell proliferation assay kits such as alamarBlue® or CellTiter-Blue®. Resazurin detects cell viability by converting from a nonfluorescent dye to the highly red fluorescent dye resorufin in response to chemical reduction of growth medium resulting from cell growth (1-3). Continued cell growth maintains a reduced environment while inhibition of growth maintains an oxidized environment. Reduction related to growth causes the redox indicator to change from oxidized (nonfluorescent, blue) form to reduced (fluorescent, red) form. The fluorescent signal is monitored using 530-560 nm excitation wavelength and 590 nm emission wavelength. The absorbance is monitored at 570 nm and 600 nm. The fluorescent or colorimetric signal generated from the assay is proportional to the number of living cells in the sample. Resazurin solution is supplied ready-to-use in 25 mL (2500 assay) or 100 mL (10,000 assay) sizes.

Features:

  • Sensitive: Requiring as few as 80 cells for reproducible results
  • Simple: Single-step homogenous assay
  • Kinetic Monitoring: Reagents nontoxic to cells, thus allowing kinetic monitoring.

alamarBlue is a registered trademark of Trek Biosystems. CellTiter-Blue is a registered trademark of Promega Corporation.

References

1. Tottey, S., et al. Extracellular matrix degradation products and low oxygen conditions enhance the regenerative potential of perivascular stem cells. Tissue Engineering doi: 10.1089/ten.TEA.2010.0188 (2010).

2. Kanagaraj, R., et al. RECQ helicase associates with the C-terminal repeat domain of RNA polymerase II during productive elongation phase of transcription. Nucleic Acids Research doi:10.1093/nar/gkq697 (2010).

3. Gustafsson, A., et al. The antimicrobial peptide LL37 and its truncated derivatives potentiates proinflammatory cytokine induction by lipoteichoic acid in whole blood. Scandanavian J. of Clinical & Lab. Inves. DOI: 10.3109/00365513.2010.521255 (2010).

4. Muzumdar, R., et al. Acute Humanin Therapy Attenuates Myocardial Ischemia and Reperfusion Injury in Mice. Arteriosclerosis, Thrombiosis, and Vascular Biology DOI:10.1161/ATVBAHA.110.205997 (2010).

5. Tottey, S., et al. The effect of source animal age upon extracellular matrix scaffold properties. Biomaterials doi:10.1016/j.biomaterials.2010.09.006 (2010).

6. Sarker, S., et al. Microtitre plate-based antibacterial assay incorporating resazurin as an indicator of cell growth, and its application in the in vitro antibacterial screening of phytochemicals. Methods 42(2):321-24 (2007).

7. Petrenko, Y., et al. The Reduction of Alamar Blue by Peripheral Blood Lymphocytes and Isolated Mitochondria. DOI612.112.94:576.311.347 (2005).

8. Palomino, J., et al. Resazurin Microtiter Assay Plate: Simple and Inexpensive Method for Detection of Drug Resistance in Mycobacterium tuberculosis. Antimicrobial Agents and Chemotherapy DOI: 10.1128/AAC.46.8.2720

 

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Support & Faq

Apoptosis, Necrosis, and Cell Viability Kits

MTT and XTT are colorimetric based assays, while resazurin can be measured using colorimetric or fluorescence detection. MTT is not a soluble product, so the cells must be lysed to solubilize the formazan salt before absorbance can be measured. XTT and resazurin do not require cell lysis, allowing kinetic monitoring of the same samples at different timepoints.

Category: Apoptosis, Necrosis, and Cell Viability Kits

← FAQs

Check to make sure your cell densities are in the linear range of the cell viability assay. Too few cells may fall below the limit of detection, and too many cells may saturate the OD. Perform an initial experiment to check the best linear range for your cell type and experimental set-up. You may need to vary the cell density assay incubation time. The kit protocols provide general guidelines and may need to be optimized for your experimental system.

Category: Apoptosis, Necrosis, and Cell Viability Kits

← FAQs

Resazurin is reduced by cells to the fluorescent product resorufin. Resorufin can be reduced further to a non-fluorescent compound. Therefore the densest wells may have lowest fluorescence due to over-reduction of the substrate. Please see the product information sheet for more details. The kit protocol provides general guidelines and may need to be optimized empirically for your experimental system. You may need to vary cell density or assay incubation time to ensure that your samples fall in the linear range of the kit.

Category: Apoptosis, Necrosis, and Cell Viability Kits

← FAQs

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Shipping/Shelf-life

Shipment Method: Shipping and handling methods will be assessed and calculated at time of shipment based upon item(s) storage temperature conditions. Expedited shipment may be requested at time of checkout. Please note that products with recommended storage at 4°C or -20°C may ship at ambient temperature. This will not affect product performance. When you receive the product, place it under the recommended storage conditions.