- Catalogue No.
K096
- Size
50T/100T/200T/500T
- Kit component
|
Item
|
50T
|
100T
|
200T
|
500T
|
|
Annexin V-FITC Reagent
|
250μL
|
500μL
|
1mL
|
1.25mL*2
|
- Storage
The kit should be stored at 2-8℃ shading light for one year. Avoid freeze/thaw cycles.
- Introduction
Annexin V-FITC Reagent is developed to identify apoptotic cells.
Annexin V is a member of the annexin family, which binds to phosphatidylserine (PS) in a calcium-dependent
manner. Annexin V-FITC, the FITC-conjugated format, binds specifically to the PS on the outer leaflet apoptotic cell membrane and can be detected with flow cytometry or fluorescence microscopy.
Cells at different apoptotic stages can be distinguished by using Annexin V and membrane impermeable DNA dyes like Propidium Iodide (PI), 7-Amino Actinomycin D (7-AAD) or 4',6-Diamidino-2-Phenylindole (DAPI).
- Assay Procedure (For reference)
1. Induce apoptosis of suspension cells with reagents of interest. Collect cell cultures, centrifuge at 300 ×g for 5 min and discard the supernatant. Add PBS to wash the cells and resuspend the cells gently followed by the cell counting.
2. Split the cell suspension into tubes, 1~5×105 cells for each, centrifuge at 300×g for 5 min and discard the
supernatant. Add PBS to wash the cells and discard the supernatant. Add 500 μL of 1×Annexin V Binding
Buffer to resuspend the cells.
3. Add 5 µL of Annexin V-FITC Reagent and 5 µL of DNA dye (PI , 7-AAD or DAPI) to each tube.
4. Gently vortex the cells and incubate at room temperature for 15~20 min in the dark.
5. Analyze the cells immediately with proper machine settings. Otherwise, place the cells on ice in the dark
and analyze within 1 h.
- Notes
1. The kit is for research use only.
2. When detecting adherent cells, the suspension cells generated after induction of apoptosis should be collected and detected together with the subsequently collected adherent cells.
3. Mechanical damage caused by digestion of adherent cells should be avoided as much as possible. At the same time, trypsin digestion solution should not contain EDTA as much as possible, because EDTA will affect the binding of Annexin V to phosphatidylserine.
4. If trypsin containing EDTA is used, cells should be washed thoroughly after harvesting to ensure that EDTA is removed.
5. Detect apoptosis as soon as possible after staining to avoid the increase number of apoptosis or necrosis.
6. Avoid extended exposure of the samples to direct light to protect the fluorophores from quenching.
7. For your safety and health, please wear the lab coat and disposable gloves to operate.
