The EIF4EBP2 Knockout HAP1 Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population generated from the HAP1 cell line. This loss-of-function model is designed to disrupt the EIF4EBP2 gene, enabling investigation of the translational repressor 4E-BP2 in a physiologically relevant cellular context. As a polyclonal population, it offers a robust and reproducible system for studying gene function while minimizing clonal artifacts.
HAP1 is a near-haploid human chronic myeloid leukemia cell line derived from the KBM-7 blast crisis patient. With a near-haploid karyotype and adherent fibroblast-like morphology, HAP1 cells are a powerful tool for functional genomics, simplifying genetic manipulation and phenotypic analysis. The cell line retains key cancer-relevant signaling pathways, including the PI3K/AKT/mTOR axis, making it well-suited for studies of cell proliferation, signal transduction, and drug response.
The EIF4EBP2 gene product, 4E-BP2, functions as a translational repressor by binding eIF4E to inhibit cap-dependent translation. Under growth-promoting conditions, mTORC1 phosphorylates 4E-BP2, promoting its dissociation from eIF4E and allowing translation initiation of mRNAs encoding cyclin D1, MYC, and VEGF. Upstream, the mTORC1 pathway is activated by PI3K/AKT signaling in response to insulin/IGF-1 and amino acids, and involves core components such as mTOR, Raptor, TSC1/2, and Rheb. Loss of 4E-BP2 in this knockout model eliminates a key mTORC1-dependent translational checkpoint, potentially leading to constitutive activation of eIF4E-mediated translation.
In the HAP1 leukemia background, disruption of EIF4EBP2 provides a unique platform to study the consequences of deregulated translational control on cancer cell behavior. The knockout may alter proliferation, survival, and sensitivity to targeted therapies, and the polyclonal format ensures population-level reproducibility. This model is particularly valuable for dissecting mTOR-driven translation and its contribution to oncogenesis and drug resistance.
Researchers can apply this knockout model in mTOR signaling studies, translation research, proliferation assays, and drug screening. Typical readouts include Western blotting, polysome profiling, puromycin incorporation, and colony formation assays, as well as flow cytometry for cell cycle and apoptosis analysis. For additional technical details and ordering information, please contact Ascent Research.
