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Cell Meter™ Annexin V Apoptosis Assay Kit

Deep Red Fluorescence Optimized for Flow Cytometry
Our Cell Meter™ assay kits are a set of tools for monitoring cell viability. There are a variety of parameters that can be used for monitoring cell viability. This particular kit is designed to monitor cell apoptosis through measuring the translocation of phosphatidylserine (PS). In apoptosis, PS is transferred to the outer leaflet of the plasma membrane. The appearance of phosphatidylserine on the cell surface is a universal indicator of the initial/intermediate stages of cell apoptosis and can be detected before morphological changes can be observed. This kit uses a fluorescent Annexin V that specifically binds PS. Annexin V conjugates have been demonstrated to selectively bind PS. This particular assay kit is optimized to monitor cell apoptosis using a flow cytometer with the Cy5 filter set.

Example protocol

AT A GLANCE

Protocol Summary
  1. Prepare cells with test compounds (200 µL/sample).

  2. Add Annexin V-iFluor® 647 assay solution.

  3. Incubate at room temperature for 30 - 60 minutes.

  4. Analyze cells using a flow cytometer with a 660/20 nm filter (APC channel) or fluorescence microscope with a Cy5 filter set.

CELL PREPARATION

For guidelines on cell sample preparation, please visit:

https://www.aatbio.com/resources/guides/cell-sample-preparation.html

SAMPLE EXPERIMENTAL PROTOCOL

Prepare and incubate cells with Annexin V-iFluor® 647:
  1. Treat cells with test compounds for a desired period of time (4 - 6 hours for Jurkat cells treated with staurosporine) to induce apoptosis.

  2. Centrifuge the cells to get 1 - 5×105 cells/tube.

  3. Resuspend cells in 200 µL of Assay Buffer (Component B).

  4. Add 2 µL of Annexin V-iFluor® 647 (Component A) into the cells.

  5. Incubate at room temperature for 30 to 60 minutes, protected from light.

  6. Add 300 µL of Assay Buffer (Component B) to increase volume before analyzing the cells with a flow cytometer or fluorescence microscope.

  7. Monitor the fluorescence intensity using a flow cytometer with a 660/20 nm filter (APC channel) or a fluorescence microscope with a Cy5 filter set.

Analyze by using a flow cytometer:
  1. Quantify Annexin V-iFluor® 647 binding using a flow cytometer with a 660/20 nm filter (APC channel).

    Note: Annexin V binding flow cytometric analysis on adherent cells is not routinely tested since specific membrane damage may occur during cell detachment or harvesting. However, methods for utilizing Annexin V for flow cytometry on adherent cell types have been previously reported by Casiola-Rosen et al. and van Engelend et al.

Analyze by using a fluorescence microscope:
  1. Pipette the cell suspension after incubation, rinse 1 - 2 times with Assay Buffer, and then resuspend the cells with assay buffer.

  2. Add the cells on a glass slide that is covered with a glass cover-slip.

    Note: For adherent cells, it is recommended to grow the cells directly on a cover-slip. After incubation with Annexin V-iFluor® 647, rinse 1 - 2 times with assay buffer, and add assay buffer back to the cover-slip. Invert the cover-slip on a glass slide and visualize the cells. The cells can also be fixed in 2% formaldehyde after the incubation with Annexin V-iFluor® 647 and visualized under a microscope.

  3. Analyze the apoptotic cells with Annexin V-iFluor® 647 under a fluorescence microscope using the Cy5 filter set. The orange staining on the plasma membrane indicates that Annexin V-iFluor® 647 has bound to PS residues on the cell surface.

Spectrum

Product family

NameExcitation (nm)Emission (nm)Extinction coefficient (cm -1 M -1)Quantum yieldCorrection Factor (260 nm)Correction Factor (280 nm)
Cell Meter™ Annexin V Binding Apoptosis Assay Kit *Green Fluorescence Optimized for Flow Cytometry*4915167500010.910.210.11
Cell Meter™ Annexin V Binding Apoptosis Assay Kit *Orange Fluorescence Optimized for Flow Cytometry*55757010000010.6410.230.14
Cell Meter™ Annexin V Binding Apoptosis Assay Kit *Red Fluorescence Optimized for Flow Cytometry*58760320000010.5310.050.04

Citations

View all 6 citations: Citation Explorer
CCT6A knockdown suppresses osteosarcoma cell growth and Akt pathway activation in vitro
Authors: Zeng, Weiquan and Wu, Meizhu and Cheng, Ying and Liu, Liya and Han, Yuying and Xie, Qiurong and Li, Jiapeng and Wei, Lihui and Fang, Yi and Chen, Youqin and others,
Journal: Plos one (2022): e0279851
In situ polymerizable hydrogel incorporated with specific pathogen-free porcine platelet-rich plasma for the reconstruction of the corneal endothelium
Authors: Lin, Yung-Kai and Sharma, Ruchi and Ma, Hsu and Chen, Wen-Shyan and Yao, Chao-Ling
Journal: Journal of the Taiwan Institute of Chemical Engineers (2017)
Novel regulations of MEF2-A, MEF2-D, and CACNA1S in the functional incompetence of adipose-derived mesenchymal stem cells by induced indoxyl sulfate in chronic kidney disease
Authors: Do, Duyen Thi and Phan, Nam Nhut and Wang, Chih-Yang and Sun, Zhengda and Lin, Yen-Chang
Journal: Cytotechnology (2016): 2589--2604
Shear stress-induced alteration of epithelial organization in human renal tubular cells
Authors: Maggiorani, Damien and Dissard, Romain and Belloy, Marcy and Saulnier-Blache, Jean-S{\'e}bastien and Casemayou, Audrey and Ducasse, Laure and Gr{\`e}s, Sandra and Belli{\`e}re, Julie and Caubet, C{\'e}cile and Bascands, Jean-Loup and others,
Journal: PLoS One (2015): e0131416
Shear stress-induced alteration of epithelial organization in human renal tubular cells
Authors: Maggiorani, Damien and Dissard, Romain and Belloy, Marcy and Saulnier-Blache, Jean-Sébastien and Casemayou, Audrey and Ducasse, Laure and Grès, S and ra , undefined and Bellière, Julie and Caubet, Cécile and Basc, undefined and s, Jean-Loup and others, undefined
Journal: PloS one (2015): e0131416

References

View all 32 references: Citation Explorer
Gold fluorescent annexin A5 as a novel apoptosis detection tool
Authors: Kurschus FC, Pal PP, Baumler P, Jenne DE, Wiltschi B, Budisa N.
Journal: Cytometry A (2009): 626
Glycogen synthase kinase-3 and Omi/HtrA2 induce annexin A2 cleavage followed by cell cycle inhibition and apoptosis
Authors: Wang CY, Lin YS, Su WC, Chen CL, Lin CF.
Journal: Mol Biol Cell (2009): 4153
Evaluation of annexin V and Calcein-AM as markers of mononuclear cell apoptosis during human immunodeficiency virus infection
Authors: Palma PF, Baggio GL, Spada C, Silva RD, Ferreira SI, Treitinger A.
Journal: Braz J Infect Dis (2008): 108
Measurement of annexin V uptake and lactadherin labeling for the quantification of apoptosis in adherent Tca8113 and ACC-2 cells
Authors: Hu T, Shi J, Jiao X, Zhou J, Yin X.
Journal: Braz J Med Biol Res (2008): 750
Detection of apoptosis induced by new type gosling viral enteritis virus in vitro through fluorescein annexin V-FITC/PI double labeling
Authors: Chen S, Cheng AC, Wang MS, Peng X.
Journal: World J Gastroenterol (2008): 2174
Page updated on October 8, 2024

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Spectral properties

Correction Factor (260 nm)

0.03

Correction Factor (280 nm)

0.03

Correction Factor (656 nm)

0.0793

Extinction coefficient (cm -1 M -1)

2500001

Excitation (nm)

656

Emission (nm)

670

Quantum yield

0.251

Storage, safety and handling

H-phraseH303, H313, H333
Hazard symbolXN
Intended useResearch Use Only (RUO)
R-phraseR20, R21, R22
UNSPSC12352200

Platform

Flow cytometer

Excitation640 nm laser
Emission660, 20 nm filter
Instrument specification(s)APC channel

Components