The ANO8 Knockout HeLa Polyclonal Cells represent a CRISPR/Cas9-mediated loss-of-function cell population generated through targeted disruption of the ANO8 gene in the HeLa cell line. This polyclonal knockout product provides a genetically heterogeneous pool of edited cells, each carrying diverse loss-of-function alleles, enabling robust functional studies without the clonal artifacts that can arise from single-cell-derived lines. The polyclonal format is particularly suited for pooled screening approaches and for examining ANO8-dependent phenotypes in a population context that more closely mirrors natural cellular heterogeneity.
HeLa cells, derived from a cervical adenocarcinoma and immortalized by human papillomavirus type 18 (HPV18), serve as a widely utilized epithelial model in cancer biology, virology, and drug discovery. Their rapid proliferation and well-characterized signaling networks make them an ideal host for investigating genes involved in tumorigenic processes. The integration of the HPV18 genome drives sustained proliferative signaling, and the ANO8 knockout in this background allows dissection of additional calcium-dependent proliferative pathways that may cooperate with or act independently of viral oncoproteins.
ANO8 encodes a putative calcium-activated chloride channel and phospholipid scramblase that modulates intracellular calcium dynamics and membrane lipid asymmetry. Its activation is triggered by elevations in intracellular Ca2+, which can result from G protein-coupled receptor (GPCR) stimulation by agonists such as histamine or ATP, or from store-operated calcium entry mediated by STIM1 and ORAI1. Upon activation, ANO8 facilitates either chloride efflux or bidirectional scrambling of membrane phospholipids, leading to membrane depolarization and phosphatidylserine externalization. These early events are linked to downstream phosphorylation of ERK1/2 in the MAPK pathway and AKT in the PI3K/AKT cascade, as well as modulation of cell cycle regulators including cyclin D1. ANO8 physically and functionally interacts with other anoctamin family members, notably ANO1 and ANO6, and with calmodulin, positioning it as a key node in calcium-mediated signal transduction.
In the HeLa cervical adenocarcinoma context, ANO8 signaling is expected to contribute to uncontrolled cell proliferation and survival. The MAPK/ERK and PI3K/AKT pathways are frequently hyperactivated in cervical cancers, and ANO8-dependent calcium oscillations may further potentiate these oncogenic cascades. Disruption of ANO8 in this HPV18-immortalized line therefore offers a physiologically relevant system to assess the gene’s contribution to tumor cell growth, migration, and apoptosis resistance. The model allows researchers to uncouple ANO8-mediated effects from other calcium-activated anoctamins and to evaluate its importance in maintaining the malignant phenotype.
Typical research applications include functional characterization of ANO8 in calcium signaling, investigation of anoctamin-dependent phospholipid scrambling, and cancer cell proliferation and migration assays. The polyclonal knockout cells are compatible with a range of experimental techniques such as RT-qPCR and western blotting for gene and protein expression validation, calcium imaging using Fluo-4 to monitor intracellular calcium dynamics, Annexin V staining for phosphatidylserine exposure, MTT or BrdU proliferation assays, colony formation assays, wound healing migration assays, and flow cytometry for cell cycle analysis. They are also suitable for electrophysiological patch-clamp recordings to assess chloride currents and for phospho-specific analysis of MAPK/ERK pathway activation. For additional details or technical support, please contact Ascent Research.
