Cas9 Stable Cell Line - HeLa

The researchers explored the mechanism of Tc toxin recognition and cellular intoxication, focusing on how specific glycan receptors, such as N-glycans and sulfated glycosaminoglycans (sGAGs), mediate the binding of different Tc toxins. The researchers performed two independent genome-wide CRISPR-Cas9 screens using HeLa cells to identify genes involved in toxin sensitivity. Their findings revealed that the knockout of N-glycan processing enzymes blocked TcdA1W14 toxicity, while sulfation in sGAGs was critical for the binding of TcdA2TT01. This work provides new insights into the host-specific interactions of Tc toxins, which could lead to more targeted biomedical applications. To perform these CRISPR screens, the researchers utilized HeLa cells stably expressing Cas9 (HeLa-Cas9), which were transduced with a lentiviral single guide RNA (sgRNA) library targeting over 19,000 human genes.

Figure 1. The researchers used HeLa-Cas9 cells to perform a genome-wide CRISPR-Cas9 screen, identifying genes involved in PTC3W14 toxin sensitivity. They treated these cells with various concentrations of PTC3W14 and assessed cell viability, actin polymerization, and membrane blebbing to identify critical host factors. (Song N, et al., 2021)

Creative Biogene's Cas9 Stable Cell Line - HeLa is ideal for similar genetic screening applications, offering a reliable platform for gene knockout studies and advanced toxin receptor research.