287.00 USD – 569.00 USD
Blue fluorescent caspase-3/7 substrate for detecting apoptosis in intact cells by confocal microscopy, flow cytometry, or live cell imaging.
NucView® 405 Caspase-3 Substrate is a convenient tool for detecting apoptosis in intact cells based on caspase-3/7 activity using confocal microscopy, flow cytometry, or live cell imaging.
NucView® substrates consist of a fluorogenic DNA dye coupled to the caspase-3/7 DEVD recognition sequence. The substrate, which is initially non-fluorescent, penetrates the plasma membrane and enters the cytoplasm. In apoptotic cells, caspase-3/7 cleaves the substrate, releasing the high-affinity DNA dye, which migrates to the cell nucleus and stains DNA with fluorescence. Thus, NucView caspase-3 substrates are bifunctional, allowing detection of caspase-3/7 activity and visualization of morphological changes in the nucleus during apoptosis. In contrast to other fluorogenic caspase substrates or fluorescent caspase inhibitor based (FLICA) assays, NucView® caspase-3 substrates can be used to detect caspase-3/7 activity within individual intact cells without inhibiting apoptosis progression. Staining is compatible with subsequent fixation and permeabilization for immunostaining.
NucView® 405 dye is excited by the 405 nm laser line for detection by confocal microscopy in the DAPI channel, or by flow cytometry in the Pacific Blue® channel. NucView® 405 is ideal for caspase-3 detection in multi-color applications for researchers who wish to reserve the green fluorescence channel for other detection reagents.
Note: NucView® 405 signal may be difficult to observe using epifluorescence microscopy. Confocal microscopy using 405 nm laser excitation is recommended for imaging.
NucView® 405 Caspase-3 Substrate is offered as a 1 mM solution in DMSO (catalog no. 10405) or PBS (phosphate-buffered saline). The substrate in PBS is formulated for use in cells that are sensitive to DMSO toxicity. In non-DMSO sensitive cell types, adding DMSO during the substrate incubation may enhance NucView® 405 staining.
Note: NucView® 405 signal may be difficult to observe using epifluorescence microscopy. Confocal microscopy using 405 nm laser excitation is recommended for imaging. Biotium also offers green fluorescent NucView® 488 caspase-3 substrate and kits as well as orange fluorescent NucView® 530.
|For live or fixed cells||For live/intact cells|
|Assay type/options||Long term staining (24-72h), Endpoint assay, No-wash staining, Real-time imaging, Homogeneous assay|
|Detection method/readout||Fluorescence microscopy, Live cell imaging, Flow cytometry|
|Fixation options||Fix after staining (formaldehyde), Permeabilize after staining|
|Excitation/Emission||429/469 nm (with DNA)|
|Storage Conditions||Store at -10 to -35 °C|
Trial size ( 10 uL), 100 uL