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Cell viability kit

Manufactured by Promega

The Cell Viability Kit is a laboratory instrument designed to measure the viability and proliferation of cells. It uses a colorimetric or fluorometric assay to quantify the number of living cells in a sample.

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5 protocols using cell viability kit

1

Antiviral Screening of Test Compounds Against HIV-1

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HIV-1 NL4–3 (multiplicity of infection = 0.001) was used to infect MT4 cells in the presence of various concentrations of the test compounds, and the CellTiter-Glo reagent was added in parallel for cytotoxicity studies.5 Virus replication was analyzed on day-4 postinfection using a p24 ELISA kit from PerkinElmer, and cytotoxicity was determined using a cell viability kit provided by Promega. The compound concentration that inhibited HIV-1 replication by 50% (EC50) and decreased the cell viability by 50% (IC50) was calculated by using the biostatistic software Calcusun (Biosoft). Gnidimacrin was used as a positive control.
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2

Antiviral Potency and Cytotoxicity of Compounds

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HIV-1 NL4–3 (multiplicity of infection = 0.001) was used to infect MT4 cells in the presence of different concentrations of the test compounds, and cytotoxicity of these compounds to MT4 cells was evaluated by using a cell viability kit provided by Promega.8 (link) Fresh medium containing appropriate concentrations of the compounds was added to the culture 48 h after infection to maintain normal cell growth. Virus replication was analyzed on day-4 postinfection using a p24 ELISA kit from PerkinElmer. The CellTiter-Glo Luminescent Cell Viability Assay is a simple method of determining the viability of the cells in culture based on quantitation of ATP in metabolically active cells. The CellTiter-Glo reagent was added to the MT4 cells that were cultured parallel to the antiviral assays. The biostatistic software Calcusun (Biosoft) was used to calculate the compound concentration that inhibited HIV-1 replication by 50% (EC50) and decreased the cell viability by 50% (IC50). Gnidimacrin was used as a positive control.
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3

Cytotoxicity Assay for MT4 Cells

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Cytotoxicity of the purified compounds toward MT4 cells was determined by using a cell viability kit provided by Promega. The CellTiter-Glo luminescent cell viability assay is a simple method of determining the viability of the cells in culture based on quantitation of ATP in metabolically active cells. The CellTiter-Glo reagent was added to MT4 cells that were cultured parallel to the antiviral assays. The cytotoxic concentration that caused the reduction of viable cells by 50% (CC50) was calculated from the dose–response curve using CalcuSyn.
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4

Vero Cell Cytotoxicity Assay for TB Compounds

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Vero cells (ATCC CCL-81) were used to test cytotoxicity as described previously (18 (link)). Briefly, Vero cells were plated at a concentration of 105 cells/well in 96-well plates and incubated for 2 to 3 h to allow the cells to settle. Test compounds were serially diluted separately in Eagle’s minimal essential medium to generate test concentrations ranging from 200 to 0.1× M. tuberculosis MIC. The serial dilutions were then added to the plated cells and incubated for 48 h at 37°C. The viability of Vero cells exposed to each compound was determined using an MTT [3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide] cell viability kit (Promega).
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5

Luciferase-Based Cell Proliferation Assay

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Cells expressing luciferase were seeded in a 96-well plate at 100 cells per well in triplicate. Cell proliferation was determined through luciferase activity every 24 hours for 6 consecutive days with a luciferase assay kit (Biotium) or cell viability kit (Promega) and a microplate reader (Turner BioSystems). Relative luciferase units were normalized with background subtraction. Nonlinear regression curve fit was performed using exponential growth equation, and two-way ANOVA was used for the analysis of statistical significance (GraphPad Prism 7.0). Cell-cycle profiling was performed in quadruplicate by labeling the cells with 4′,6-diamidino-2-phenylindole (DAPI) to a final concentration of 10 μg/mL. Cells were then analyzed by flow cytometry (BD FACSCanto, BD Biosciences) with BD FACSDiva Software (BD Biosciences).
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