Overview

  • Product name
    Annexin V-PE-Cy5 Apoptosis Staining / Detection Kit
    See all Annexin V kits
  • Sample type
    Adherent cells, Suspension cells
  • Assay type
    Direct
  • Assay time
    0h 10m
  • Product overview

    Annexin V-PE-Cy5 Apoptosis Staining / Detection Kit (ab14159) is based on the observation that soon after initiating apoptosis, most cell types translocate the membrane phospholipid phosphatidylserine (PS) from the inner face of the plasma membrane to the cell surface. Once on the cell surface, PS can be easily detected by staining with a fluorescent conjugate of Annexin V, a protein that has a strong natural affinity for PS. The one-step staining procedure takes only 10 minutes. In addition, the assay can be directly performed on live cells, without the need for fixation. Results can be analyzed by flow cytometry or fluorescence microscopy.
    Visit our FAQs page for tips and troubleshooting.

  • Platform
    Flow cytometer, Fluorescence microscope

Properties

Protocols

References

ab14159 has not yet been referenced specifically in any publications.

Customer reviews and Q&As

1-2 of 2 Abreviews or Q&A

Answer



We do not have any experimentaldata for theuse of this kitwith GFP, howeverI think this should be ok sincethe kit uses the tandem (PE-Cy5) for which the excitation wavelengthis 488 nm and the emission 670nm. This should not interfere with the GFP wavelengths of 395 nm (Ex)and at 470 nm (Em).

I hope this is helpful.

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Answer

I'm very sorry to hear you are having problems with this kit and for the shortages you have experienced. I have arranged for 2 kits to be sent to you as soon as possible (order reference 80894) and apologise for the inconvenience. I also enclose the detailed protocol to help you, Please let me know if you need anything else and if you are satisfied with the new kits. Introduction: The Annexin V-PE-Cy5 Apoptosis Detection Kit is based on the observation that soon after initiating apoptosis, most cell types translocate the membrane phospholipid phosphatidylserine (PS) from the inner face of the plasma membrane to the cell surface. Once on the cell surface, PS can be easily detected by staining with a fluorescent conjugate of Annexin V, a protein that has a strong natural affinity for PS. The one-step staining procedure takes only 10 minutes. In addition, the assay can be directly performed on live cells, without the need for fixation. Results can be analyzed by flow cytometry or fluorescence microscopy. II. Annexin V-PE-Cy5 Assay Protocol: A. Incubation of cells with Annexin V-PE-Cy5 1. Induce apoptosis by desired method. 2. Collect 1-5 x 105 cells by centrifugation. 3. Resuspend cells in 500 µl of 1X Binding Buffer. 4. Add 5 µl of Annexin V-PE-Cy5. 5. Incubate at room temperature for 5 min in the dark. Proceed to B or C below depending on method of analysis. B. Quantification by Flow Cytometry Analyze Annexin V-PE-Cy5 binding by flow cytometry (Ex = 488 nm; Em = 670 nm). For analyzing adherent cells, gently trypsinize and wash cells once with serum-containing media before incubation with Annexin V-PE-Cy5 (A.3-5). C. Detection by Fluorescence Microscopy 1. Place the cell suspension from Step A.5 on a glass slide. Cover the cells with a glass coverslip. For analyzing adherent cells, grow cells directly on a coverslip. Following incubation (A.5), invert coverslip on glass slide and visualize cells. The cells can also be washed and fixed in 2% formaldehyde before visualization. (Cells must be incubated with Annexin V-PE-Cy5 before fixation since any cell membrane disruption can cause nonspecific binding of Annexin V to PS on the inner surface of the cell membrane.) 2. Observe the cells under a fluorescence microscope using the PE-Cy5 filter. Cells which have bound Annexin V-PE-Cy5 will show bright purple staining in the plasma membrane. III. Storage and stability: Store kit at 4oC.

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