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Get tips on using FxCycle™ PI/RNase Staining Solution to perform Cell cycle assay human - HCT-116

Products Thermo Fisher Scientific FxCycle™ PI/RNase Staining Solution

Get tips on using FxCycle™ PI/RNase Staining Solution to perform Cell cycle assay human - HL-60

Products Thermo Fisher Scientific FxCycle™ PI/RNase Staining Solution

Get tips on using FxCycle™ PI/RNase Staining Solution to perform Cell cycle assay human - THP-1

Products Thermo Fisher Scientific FxCycle™ PI/RNase Staining Solution

Cell cytotoxicity assays measure the ability of certain compounds or chemical mediators to reduce the viability of the cells. The term cell cytotoxicity assay can sometimes be used interchangeably with cell proliferation assay. Healthy living cells can be identified by the use of formazan dyes, protease biomarkers or by measuring ATP content. The formazan dyes are chromogenic products formed by the reduction of tetrazolium salts by dehydrogenases, such as lactate dehydrogenase (LDH) and reductases that are released during cell death. Common tetrazolium salts include INT, MTT, MTS and XTT. Cell cytotoxicity can also be measured by using the SRB and WST-1 assays. These assays can usually be used in a high-throughput fashion and can be quantitated by measuring absorbance, colorimetry or luminescence. All these assays require similar numbers of cell plating at the initiation, a time course of treatment with the cytotoxic agent and at least triplicates for each condition at every point of analysis. Cell shrinkage, plasma membrane blebbing, cell detachment, externalization of phosphatidylserine, nuclear condensation and ultimately DNA fragmentation are well-described features of apoptosis. The assays that rely on cell membrane integrity for their function, may not be able to quantify early apoptosis. Therefore, in order to distinguish early apoptotic vs. late apoptotic or necrotic cells, additional flow cytometry techniques can be used. A combination of Annexin V and PI (propidium iodide) can be used to distinguish early (Annexin V+/PI-) and late apoptotic (Annexin V+/PI+) cells. Sometimes, caspase assays are used in order to differentiate the stages of apoptosis.

Cellular assays Cell cytotoxicity / Proliferation assay cell type adipose stem cells

Cellular assays Cell Isolation Mouse T cells

TUNEL assay is the cell death detection method where the biochemical marker of apoptosis is DNA fragmentation. The assay involves the microscopical detection of generated DNA fragments with free 3'-hydroxyl residues. in apoptotic cells using enzyme terminal deoxynucleotidyl transferase (TdT) which adds biotinylated nucleotides at the site of DNA breaks. Major challenges of this method involve proper access of the enzyme which could be hampered by poor permeabilization and/or excessive fixation with cross-linking fixative (common with archival tissue). This issue can be resolved by optimizing the incubation time with Proteinase K or CytoninTM.

Cellular assays TUNEL assay cell type FaDu human squamous cell carcinoma

There are a plethora of detection methods of cell cytotoxicity and proliferation by flow cytometry. However, samples preparation for such flow cytometry-based techniques could be challenging. Cell harvesting by trypsinization, mechanical or enzymatic cell disaggregation from tissues, extensive centrifugation steps, may all lead to preferential loss of apoptotic cells. To overcome this strictly follow manufacturers instruction of the detection kit.

Cellular assays Cell cytotoxicity / Proliferation assay cell type MCF-7

Get tips on using BrdU Cell Proliferation Assay to perform Cell cytotoxicity / Proliferation assay cell type - HT-22

Products Millipore BrdU Cell Proliferation Assay

Get tips on using BrdU Cell Proliferation Assay to perform Cell cytotoxicity / Proliferation assay cell type - Panc-1

Products Millipore BrdU Cell Proliferation Assay

Get tips on using BrdU Cell Proliferation Assay to perform Cell cytotoxicity / Proliferation assay cell type - MCF-7

Products Millipore BrdU Cell Proliferation Assay

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