The EBF4 Knockout HAP1 Polyclonal Cells represent a CRISPR/Cas9-edited polyclonal knockout cell population targeting the EBF4 gene in the human HAP1 cell line. This product provides a heterogeneous pool of cells carrying diverse gene disruptions within the EBF4 locus, serving as a robust loss-of-function model to interrogate EBF4-dependent biological mechanisms. The polyclonal nature ensures broad representation of knockout events without the limitations of single-cell clonal expansion, making it an ideal tool for pooled functional genomics and screening applications.
The host HAP1 cell line is a near-haploid human cell line derived from the chronic myeloid leukemia (CML) KBM-7 line. Its near-haploid karyotype simplifies genetic manipulation and facilitates the generation of homozygous-like loss-of-function models through single-allele targeting, while retaining essential diploid chromosomal regions required for normal cellular processes. HAP1 cells are widely adopted for CRISPR-based knockout studies, high-throughput genetic screens, and signaling pathway dissection due to their stable growth, ease of transfection, and well-characterized background.
EBF4 belongs to the early B-cell factor (EBF) family of helix-loop-helix transcription factors and functions as a DNA-binding protein that regulates gene expression programs essential for neuronal differentiation and olfactory receptor neuron specification. Its activity is modulated by upstream signals including the Neurogenin family of transcription factors, Notch signaling, and BMP signaling. Within the Notch pathway, EBF4 operates downstream of Notch1 and Hes1, and cooperates with Neurog1 to drive the expression of olfactory receptor gene clusters, olfactory marker protein (OMP), and neurotrophic factors. It also interacts with other EBF family members, zinc-finger transcription factors, and transcriptional coactivators to fine-tune transcriptional outputs.
Disruption of EBF4 in the HAP1 background creates a powerful platform to dissect its role in neuronal-type transcriptional networks in a simplified genetic context. The near-haploid genome enhances the penetrance of knockout phenotypes and reduces the confounding effects of allelic variation, while the polyclonal composition mitigates clone-specific artifacts. This model enables the investigation of EBF4-dependent gene regulation and protein interactions in a tractable, non-neuronal cell environment that can be engineered to express relevant neuronal factors.
Researchers can employ this polyclonal knockout population in a wide range of experimental workflows, including RNA-seq and RT-qPCR to profile EBF4-regulated transcriptomes, Western blotting to confirm protein-level knockout, immunofluorescence to assess subcellular localization of interacting factors, and flow cytometry for phenotypic screening. The cells are also suitable for high-throughput drug screening campaigns leveraging the haploid genetic background to identify synthetic lethal interactions or chemical modifiers of EBF4-associated pathways. For further information or to discuss your specific research needs, please contact Ascent Research.
