The BIN3 Knockout HeLa Polyclonal Cells constitute a CRISPR/Cas9-edited polyclonal knockout cell population engineered for targeted disruption of the BIN3 gene. This loss-of-function model is designed to ablate expression of the BAR domain protein BIN3, which plays a critical role in autophagy and endosomal trafficking. The polyclonal format provides a heterogeneous collection of editing events, avoiding clonal bias and better reflecting population-level responses in functional assays.
HeLa cells are an HPV18-positive cervical adenocarcinoma line with functionally inactivated p53 and Rb due to expression of viral E6/E7 oncoproteins. They grow as an adherent epithelial monolayer and are extensively utilized in cancer research, drug screening, and signaling studies. This background makes them an appropriate host for investigating autophagy-related processes in the context of HPV-driven transformation and therapeutic resistance.
The BIN3 protein contains a BAR domain that senses membrane curvature and recruits ATG8 family proteins, including LC3 (MAP1LC3B), GABARAP, and GATE-16, to nascent autophagosomes. This interaction promotes LC3/GABARAP lipidation and subsequent autophagosome-lysosome fusion, enabling cargo degradation. Upstream, BIN3 is regulated by mTORC1 and AMPK, and its expression is controlled by TFEB, linking nutrient and energy status to autophagic activity. Disruption of BIN3 therefore alters autophagic flux, as reflected by changes in LC3?II conversion and p62/SQSTM1 turnover.
BIN3 knockout in HeLa cells enables dissection of autophagy-dependent survival under oncogenic stress. Given the host line’s reliance on autophagy for metabolic adaptation and drug resistance, BIN3 loss can perturb flux and sensitize cells to chemotherapeutics such as cisplatin. This model is well-suited to explore crosstalk between HPV-induced transformation and pro-survival autophagy pathways, offering insights into potential therapeutic vulnerabilities.
Typical applications include Western blot assessment of LC3?II and p62, LC3 puncta immunofluorescence, and autophagic flux assays with chloroquine. Co?immunoprecipitation confirms disrupted BIN3?CLC3 interactions, while viability and migration assays evaluate functional outcomes under starvation. These cells support investigations into autophagy-mediated drug resistance, aggregate clearance in neurodegeneration research, and endosomal trafficking dynamics. For further details or to place an order, contact Ascent Research.
