Apoptosis Probes
Product#: DC-Apoptosis-Probes
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Inquire about the Item to, support@diagnocine.comApoptosis Imaging Probes
Annexin V Flamma® series In normal live cells, phosphatidyl serine (PS) is located on the cytoplasmic surface of the cell membrane, however PS is translocated to the outer leaflet of the plasma membrane exposing to the external cellular environment when apoptosis is in progress. Annexin V is a Ca2+ dependent PS-binding protein that has been used as a non-quantitative probe to detect cells that have expressed PS on the cell surface. Fluorescence conjugated annexin V enables to detect the externalized PS by binding to PS that exposed on the outer leaflet. BioActs developed a series of Flamma® dyes and other dyes such as FITC, TAMRA and ICG conjugated annexin V, Annexin V-Flamma® series, as PS selective fluorescent probes. Annexin V Flamma® series is a rapid and selective probe for labeling of externalized PS, an indicator of intermediate stages of apoptosis. Flamma® dyes display strong absorption, high fluorescence quantum yield and high photostability, and they maintain good fluorescence activity and stability after conjugation to biomolecules, allowing the detection of low-abundance biological structures with great sensitivity. Annexin V Flamma® conjugates can be utilized in fluorescent imaging as well as for flow cytometry of apoptotic cells, and they might be used in combination with other dyes such as propidium iodide (PI) in order to accurately analyze mixed populations of apoptotic and other cells. Annexin V Flamma® probes available as stand-alone reagent or easy-to-us kits. Annexin V Flamma® apoptosis detection kit includes a PI nucleic acid binding dye and annexin V binding buffer. PI is impermeant to live cells and apoptotic cells, but stains dead cells with red fluorescence by binding to nucleic acids. Normal live cell is not labeled by ether Annexin V or PI, early stage apoptotic cell is stained with Annexin V and natural death or cell subject to necrosis is stained with PI. The late stage apoptotic cells are stained by both reagents. After staining a cell population with Annexin V Flamma® and PI in annexin binding buffer, apoptotic cells and dead cells can be distinguished and analyzed using a flow cytometer. Flamma® Fluors TUNEL Assay Kit Apoptosis is a highly regulated and controlled process that confers advantages during an organism's lifecycle, and defective apoptotic processes have been implicated in a variety of diseases such as atrophy and cancers. In situ labeling of apoptotic cells allows highly sensitive and quantitative analysis of involved cells. Characteristics of the late stages of apoptosis are changes in nuclear morphology, including chromatin condensation, degradation of nuclear envelope, and DNA strand breaks. TUNEL (terminal deoxynucleotidyl transferase (TdT)-mediated dUTP nick end-labeling) assays are the most widely used methods for rapid identification and quantification of the apoptotic cell fraction in cultured cell preparations. TUNEL reaction preferentially labels DNA strands that generated during apoptosis using the ability of TdT to label blunt ends of double-stranded DNA independent of a template. This selective labeling allows discrimination of apoptosis from necrosis and from primary DNA strand breaks induced by cytostatic drugs or irradiation. BioActs developed Flamma® Fluors TUNEL assay kit for quantitative analysis of apoptotic cells in the mixed cell populations. The kit employs dUTP conjugated Flamma® Fluors and FITC dyes for labeling of fixed cells or tissues. Flamma® Fluor dyes display excellent fluorescence activity and photostability after conjugated to biomolecules, allowing detection of low-abundance biological structures with great sensitivity. Flamma® TUNEL assay kit is reliable and effective method to detect and quantify a wide levels of apoptotic cells by fluorescence microscopy and flow cytometry. In addition, the kit can be used in the analysis of apoptotic cell of paraffin-embedded tissue sections along with cultured cells. BioActs offers Flamma® TUNEL assay kit for the detection apoptotic cells in frozen and formalin-fixed tissue sections, determination of the sensitivity of malignant cells to drug-induced apoptosis, discrimination of apoptotic and necrotic cells in the cell death environment, etc. |
Annexin V Series
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| 549/564 | 549/564 | 648/672 | 648/672 | 492/519 | 495519 | 550/565 |
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| 543/575 | 648/663 | 675/691 | 749/774 | 774/806 | 785/821 | |
Table 1. List of Annexin V-Flamma® apoptosis detection kits
| Quick link (Cat.#) | Series | λEx (nm) | λEm (nm) |
| XAP1102 | Annexin V-FITC Apoptosis detection kit | 492 | 519 |
| XAP1201 | Annexin V-Flamma® 488 Apoptosis detection kit | 549 | 564 |
| XAP1301 | Annexin V-Flamma® 552 Apoptosis detection kit | 648 | 672 |
| XAP1801 | Annexin V-TAMRA Apoptosis detection kit | 648 | 672 |
| XAP2102 | Annexin V-FITC | 492 | 519 |
| XAP2202 | Annexin V-Flamma® 488 | 495 | 519 |
| XAP2302 | Annexin V-Flamma® 552 | 550 | 565 |
| XAP2802 | Annexin V-TAMRA | 543 | 575 |
| XAP2402 | Annexin V-Flamma® 648 | 648 | 663 |
| XAP2022 | Annexin V-Flamma® 675 | 675 | 691 |
| XAP2032 | Annexin V-Flamma® 749 | 749 | 774 |
| XAP2042 | Annexin V-Flamma® 774 | 774 | 806 |
| XAP2052 | Annexin V-ICG | 785 | 821 |
TUNEL Assay Kit |
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| 543/575 | 551/570 | 648/672 | ||||
Table 2. List of Flamma® TUNEL Assay Kit
| Quick link (Cat.#) | Series | λEx (nm) | λEm (nm) |
| XTN1101 | FITC TUNEL assay kit | 495 | 522 |
| XTN1201 | Flamma® 552 TUNEL assay kit | 551 | 570 |
| XTN1301 | Flamma® 648 TUNEL assay kit | 648 | 672 |
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