Technical Articles

The development history of KRAS inhibitors spans over thirty years, with the first two decades nearly stagnant and the last decade witnessing an explosion. The turning point lies in the new understanding of KRAS's dynamic conformations and advancements in chemical technologies—particularly the application of covalent chemistry, fragment-based drug design, and targeted protein degradation.

The CyQuantiFluor™ Cell Viability Assay Kit is a homogeneous detection kit based on DNA-specific fluorescent dyes. Its core principle is: DNA-binding dyes can penetrate the membranes of live cells and bind to nuclear DNA to produce strong fluorescence, with fluorescence intensity proportional to the number of viable cells; background-shielding dyes cannot enter live cells but can block fluorescence signals from DNA released by dead cells and extracellular DNA, ensuring detection specificity. This method does not rely on cellular metabolic state and directly quantifies the DNA content of live cells, offering advantages such as simple operation (one-step addition), high signal-to-noise ratio, and excellent stability. It is suitable for tumor cell proliferation assays and high-throughput compound screening.

In cell-based pharmacological screening, tumor proliferation research, and in vitro cytotoxicity evaluation, accurate live cell counting is the core prerequisite for reliable data. Traditional metabolism-dependent detection reagents such as MTT and CCK-8 are prone to interference from metabolic fluctuations and drug effects, leading to frequent numerical deviations. Conventional nucleic acid staining kits often suffer from interference by extracellular free DNA, with non-specific fluorescence elevating background values, hindering the implementation of high-throughput screening. U-爱Bio's self-developed CyQuantiFluor™ Cell Viability Assay Kit leverages dual-dye cooperative shielding technology, breaking free from metabolism-dependent limitations. With its homogeneous operation advantages, it has become the preferred tool for cell proliferation, cytotoxicity, and high-throughput small-molecule drug screening.

Cell viability and proliferation assays are among the most fundamental and essential experimental techniques in cell biology, drug screening, and toxicology research. Traditional methods such as MTT and CCK-8 rely on the activity of intracellular metabolic enzymes to convert substrates into colored or fluorescent products, thereby indirectly reflecting the number of viable cells.

In the field of biomedical research, kinases, as key regulators of cellular signal transduction, play a critical role in fundamental biomedical research, drug development, and clinical translation by detecting their activity.

In the fields of drug development, cancer research, and cell biology, the precise and sensitive detection of apoptosis is a critical step. As the most crucial executor proteins in the apoptosis pathway, the activation of Caspase-3/7 is a definitive marker of irreversible cell death. If you are seeking an optimal detection solution that requires no washing, is easy to operate, and is suitable for high-throughput screening, the **UA-Glo® Caspase 3/7 Assay Kit** is your ideal choice.