The H2AZ2 Knockout HeLa Polyclonal Cells consist of a CRISPR/Cas9-mediated polyclonal knockout cell population derived from HeLa human cervical adenocarcinoma cells. In this system, the endogenous H2AZ2 gene encoding the histone variant H2A.Z-2 is disrupted to generate a loss-of-function model suitable for chromatin biology studies. The polyclonal format ensures representation of diverse editing outcomes, eliminating clonal selection bias and providing a heterogeneous cell pool ideal for transcriptomic, proteomic, and functional analyses where population robustness is critical. This product is intended for researchers investigating H2A.Z-2??s role in gene regulation, DNA repair, and cancer biology.
The host HeLa cell line is an immortalized epithelial model from human cervical adenocarcinoma, carrying integrated HPV-18 sequences that drive its transformed phenotype. Widely adopted for its rapid growth, high transfectability, and extensive molecular characterization, HeLa provides a well-defined cancer background for gene perturbation studies. Importantly, HeLa cells retain functional SRCAP and TIP60 chromatin remodeling complexes that catalyze H2A.Z-2 deposition, ensuring that H2AZ2-dependent chromatin dynamics can be analyzed in a disease-relevant epithelial context. This cellular environment supports the investigation of histone variant functions in a setting where oncogenic pathways are active, offering insights into the intersection of chromatin regulation and cervical cancer pathogenesis.
H2AZ2 (H2A.Z-2) is a histone variant that replaces canonical H2A in nucleosomes, modulating chromatin structure and gene expression. Its deposition is regulated by the SRCAP and TIP60 remodeling complexes, while removal involves the ANP32E chaperone. H2A.Z-2 interacts with H2A.Z-1, H3.3, and bromodomain proteins such as BRD2, forming distinct nucleosomes. Acting downstream of E2F and c-MYC transcription factors, H2AZ2 promotes expression of cell cycle genes (e.g., CCND1, MYC) and contributes to DNA repair by influencing chromatin accessibility at damage sites, impacting ??-H2AX signaling. Cross-talk with SWI/SNF complexes further integrates H2A.Z-2 into broader transcriptional networks. These interactions position H2AZ2 as a critical node linking oncogenic signaling to chromatin-mediated genome maintenance.
In HeLa cells, H2AZ2 knockout interrogates H2A.Z-2??s involvement in oncogenic transcription, DNA repair, and proliferation, processes often hijacked by HPV oncoproteins. This model enables investigation of H2AZ2-dependent vulnerabilities in cervical cancer, including susceptibility to DNA-damaging agents or epigenetic therapies. The polyclonal nature of the knockout allows assessment of population-level responses that are more physiologically representative than clonal derivatives. Given H2A.Z-2??s association with metastasis, the knockout pool also supports studies of epithelial-mesenchymal transition and invasive behavior in a cervical cancer context.
This polyclonal knockout cell product is ideally suited for ChIP-qPCR analyses of H2A.Z-2 occupancy shifts, RNA-sequencing to identify downstream transcriptional effects, and immunofluorescence-based chromatin structure assessments. Functional readouts including cell proliferation kinetics and DNA damage responses measured by comet assay or ??-H2AX immunostaining provide quantitative insights into H2AZ2 function. Additionally, the cell pool can be adapted for high-throughput drug screening to uncover synthetic lethal relationships with H2AZ2 deficiency. For detailed product information, validation data, and ordering, please contact Ascent Research.
