Mammalian Cell Assays
Mammalian Cell Assays - Related Videos
05:57
In Vitro Assay of Bacterial Adhesion onto Mammalian Epithelial Cells
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Cited by 81 •
2011
This protocol is a simple bacterial adhesion assay consisting in counting the numbers of bacterial colony forming units that are adhered onto cultured cells. The assay is robust, independent of the adhesin studied, and numerous variations are used in most laboratories working on bacterial pathogenesis.
11:03
Massively Parallel Reporter Assays in Cultured Mammalian Cells
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Cited by 63 •
2014
The genetic reporter assay is a well-established and powerful tool for dissecting the relationship between DNA sequences and their gene regulatory activities. Coupling candidate regulatory elements to reporter genes that carry identifying sequence tags enables massive parallelization of these assays.
15:31
MISSION esiRNA for RNAi Screening in Mammalian Cells
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Cited by 17 •
2010
Here we use a human esiRNA library in a high-throughput screen for genes involved in cell division. We demonstrate how to set up and conduct an esiRNA screens, as well as how to analyze and validate the results.
09:43
Measurement of Heme Synthesis Levels in Mammalian Cells
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Cited by 12 •
2015
Altered intracellular heme levels are associated with common diseases such as cancer. Thus, there is a need to measure heme biosynthesis levels in diverse cells. The goal of this protocol is to provide a fast and sensitive method to measure and compare the levels of heme synthesis in different cells.
11:42
Chromatin Immunoprecipitation Assay Using Micrococcal Nucleases in Mammalian Cells
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Cited by 6 •
2019
Chromatin immunoprecipitation (ChIP) is a powerful tool for understanding the molecular mechanisms of gene regulation. However, the method involves difficulties in obtaining reproducible chromatin fragmentation by mechanical shearing. Here, we provide an improved protocol for a ChIP assay using enzymatic digestion.
FAQs
Cell type and culture conditions shape the biological response being measured, so they must match the question under study. Differences in these variables can alter viability, proliferation, signaling, morphology, or gene expression independently of the tested treatment. Controlling them improves reproducibility and makes comparisons between experiments more meaningful.
Imaging can capture changes in cell appearance and other measurable features, whereas biochemical measurements can quantify molecular or functional changes. Depending on the assay design, investigators may examine viability, proliferation, signaling, morphology, or gene expression. Selecting a readout that matches the biological question helps translate cell-level changes into interpretable results.
Mammalian cell assays connect molecular studies with whole-organism research by testing responses in living mammalian cells under controlled conditions. This allows investigators to examine effects on cellular function while limiting the complexity of an entire organism. Results can therefore help clarify mechanisms and guide which candidates merit further testing.
A typical workflow begins by selecting and culturing an appropriate mammalian cell type, then exposing the cells to a defined compound, gene, pathogen, or environmental condition. Investigators next measure the selected response through imaging or biochemical methods and compare the resulting changes with the experimental question. This sequence links treatment exposure to a measurable cellular outcome.
They are useful when investigators need cellular evidence for questions in cell biology, disease mechanisms, toxicology, or drug development. In drug-related studies, measured changes can help prioritize candidates before further testing. The assays also reveal whether a treatment alters cellular function, giving researchers a focused basis for deciding which effects warrant additional investigation.
Assay design determines which cellular response becomes visible and how confidently it can be interpreted. Researchers must align the cell type, culture conditions, tested exposure, and measurement method with the biological question. A design focused on viability may not answer a signaling or gene-expression question, so the chosen endpoint shapes the conclusions drawn.