ANO1 Knockout HAP1 Polyclonal Cells constitute a CRISPR/Cas9-edited polyclonal knockout cell population derived from the near-haploid HAP1 cell line, offering a loss-of-function model of the ANO1 gene. This heterogeneous pool contains cells with various disruptions in ANO1, enabling functional studies without the need for single-cell clonal isolation, and is well-suited for large-scale screening applications. The product provides a robust tool for investigating ANO1-dependent chloride channel biology and its roles in cancer signaling.
The HAP1 cell line originates from the KBM-7 chronic myeloid leukemia cell line and features a near-haploid karyotype, which simplifies genome editing and reduces functional redundancy compared to diploid systems. This genetic clarity makes HAP1 an optimal host for CRISPR-mediated knockout studies, providing a clean background for elucidating gene function. Importantly, HAP1 cells maintain key signaling modules, including GPCR-EGFR-MAPK pathways, rendering them a suitable platform for studying ANO1-mediated chloride conductance and its downstream cellular effects in a cancer-relevant context.
ANO1 encodes a calcium-activated chloride channel (TMEM16A) that opens in response to elevated intracellular Ca2+ levels, triggered by G??q-coupled GPCR agonists such as acetylcholine, histamine, or ATP, or by EGFR activation via EGF. Chloride efflux through ANO1 leads to membrane depolarization and regulates ERM proteins (ezrin, radixin, moesin) and EGFR, which in turn activate MAPK/ERK and AKT signaling cascades to control cell proliferation, migration, and volume homeostasis. ANO1 also functionally couples with IP3 receptors, participating in calcium-induced calcium release mechanisms. Aberrant ANO1 expression or function is associated with multiple pathologies, including carcinoma, hypertension, and cystic fibrosis-like secretory defects.
In the HAP1 cell background, disruption of ANO1 provides a powerful system to study its contributions to oncogenic phenotypes, as ANO1 overexpression is documented in breast, head and neck, gastric, and colorectal cancers. This knockout model facilitates dissection of calcium-dependent chloride conductance and its influence on signaling pathways that drive tumor growth, invasion, and drug sensitivity. The near-haploid nature of HAP1 cells minimizes genetic confounders, enabling clearer correlations between ANO1 loss and alterations in cell volume regulation or membrane potential dynamics.
These ANO1 polyclonal knockout cells can be utilized in diverse assays: patch-clamp electrophysiology to record chloride currents, fluorometric chloride efflux assays to measure channel activity, and calcium imaging to monitor intracellular signaling. Additional methods include Western blotting and RT-qPCR for confirming ANO1 disruption, immunofluorescence for spatial analysis, and functional assays for proliferation, migration, and drug sensitivity. The polyclonal pool is particularly advantageous for high-throughput genetic screens and pharmacological studies of calcium-activated chloride channels. For further details or technical inquiries, please contact Ascent Research.
