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Cell Vitality Assay

Detection of cell vitality and cellular thiol levels using VitaBright-48™ and the NC-3000™

The vitality assay provides easy determination of the level of reduced thiols, such as glutathione (GSH). During apoptosis, the levels of GSH decrease and this decrease can be easily detected with VitBright-48™
Advanced image cytometer - NucleoCounter NC-3000

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Key benefits:

  • Extremely easy assay for evaluation of cellular health, oxidative stress and indirect detection of apoptosis
  • Total assay time less than one minute
  • Acquisition and analysis at the single cell level in one simple step
  • User friendly protocol with predefined settings
  • PlotManager for superior data presentation
  • Automated PDF reports
  • Export of data in FCS/ACS formats

Application Note (.PDF):
Vitality assay: Analysis of the level of cellular thiols using the NucleoCounter® NC-3000™ System

Overview

The vitality assay provides easy determination of the level of thiols, such as reduced glutathione (GSH). GSH is the most abundant low molecular weight thiol in animal cells; thus its oxidation status largely determines the thiol-disulfide status of the cell by thiol-disulfide interchange reactions.

 

Skema_Vitality_NC-3000
GSH is involved in many cellular processes including quenching of free radicals, drug detoxification, cell signaling, and cell proliferation. The decrease in cellular GSH concentration is an early hallmark in the progression of cell death in response to different apoptotic stimuli in many cell types.

Principle

Scatter plots and histograms showing thiol level distribution (VB-48™ intensity) in the cell population are automatically displayed after analysis.

By comparing the VB-48™ intensity of treated cells and control cells the fraction of cells with low vitality (e.g. apoptotic or stressed cells) can be determined.

Results: Presented in PlotManager

 

Figure: Hybridoma cells were grown in the absence (upper row) or in the presence (lower row) of etoposide. Cells were stained with VB-48™, Acridine Orange (AO) and Propidium Iodide (PI) and analysed using the Vitality Assay and a NucleoCounter® NC-3000™. Scatter plots and histograms were obtained from the NucleoView™ NC-3000™ software. Polygons and markers in the displayed plots were used to demarcate the various cell populations. In this example etoposide causes a decrease in the level thiols in a subpopulation (cells with low VB-48™ intensity).

Instruments

Xcyto® 5
NucleoCounter® NC-3000™ NucleoCounter® NC-202™ NucleoCounter® NC-200™ NucleoCounter® SP-100™ NucleoCounter® YC-100™

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