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TransDetect® Annexin V-EGFP/PI Cell Apoptosis Detection Kit – FA111

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TransDetect® Annexin V-EGFP/PI Cell Apoptosis Detection Kit

Annexin V can be used as one of the most sensitive indicators to detect the early-stage apoptosis. In normal live cells, phosphatidylserine (PS) is located only on the inner face of plasma membrane. However, in the early-stage apoptosis, PS is translocated from the inner to the outer leaflet of the plasma membrane, thus exposing PS to cell surface. Annexin V is a Ca2+ -dependent phospholipid- binding protein that has a high affinity for PS. Therefore, Annexin V can identify early-stage apoptosis by binding to PS exposed on the outer leaflet. Annexin V can be labeled with green fluorophore (EGFP), the labeled Annexin V-EGFP is used as a probe to detect the occurrence of apoptosis by flow cytometry or by fluorescence microscopy. Propidium iodide (PI) is a nucleic acid binding dye, and it is impermeant to live cells with intact membrane and early apoptotic cells. However, PI can stain the nucleus through permeating to cell membrane of mid-stage or late-stage apoptotic cells and necrosis cells, which show red fluorescence under certain laser excitation.

This kit can differentiate cells at different apoptosis stages when performing both Annexin V- EGFP and PI staining. In a dual-parameter flow cytometry scatter diagram, if X axis indicates Annexin V signal and Y axis indicates PI signal, then the bottom left panel(Annexin V-/PI-) indicates live cells; the bottom right panel (Annexin V+ /PI-)  indicates early-stage apoptotic cells; the top right panel (Annexin V+ /PI+) indicates late-stage apoptotic cells and necrosis cells; the top left panel (Annexin V-/PI+) is considered as detection error in permissible range.

Based on 500 ul final volume reactions.

TGFA111 content


Manual and datasheet:

FA111 TransDetect Annexin V EGFP PI Cell Apoptosis Detection Kit

Additional information

Format

25 x 500 ul rx, 50 x 500 ul rx

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