siRNA / RNAi /miRNA transfection Human Cells HT-1376

Get tips on using siGENOME Human MAP4K2 siRNA to perform siRNA / miRNA gene silencing Human - RMS MAP4K2

Get tips on using siGENOME Human PAK1 siRNA to perform siRNA / miRNA gene silencing Human - HeLa PAK1

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.

Get tips on using SurePrint Human miRNA Microarrays to perform Microarray Human - Endometrial stromal cells miRNA-expression array (labelled)

Transfection is a powerful technique that enables the study of the function of genes and gene products in cells. Based on the nature of experiments, we may need a stable DNA transfection in cells for persistent gain-of-function or loss-of-function of the target gene. For stable transfection, integration of a DNA vector into the chromosome is crucial which requires selective screening and clonal isolation. By carefully selecting a viral delivery system and related reagents we can ensure safe and highly-efficient delivery of expression constructs for high-level constitutive or inducible expression in any mammalian cell type.

Get tips on using jetPEI® DNA transfection, HTS application to perform DNA transfection Mammalian cells - Primary cells Human astrocytes

Get tips on using ON-TARGETplus human ATG16L1 siRNA to perform siRNA / miRNA gene silencing Human - SHSY5Y ATG16L1

Get tips on using ON-TARGETplus Human TET1 siRNA to perform siRNA / miRNA gene silencing Human - A172 TET1

Get tips on using ON-TARGETplus Human ARL2BP siRNA to perform siRNA / miRNA gene silencing Human - HeLa BART/ARL2BP