The EIF4E3 Knockout HeLa Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout population derived from the HeLa cell line, providing a loss-of-function model for eukaryotic translation initiation factor 4E family member 3 (EIF4E3). The polyclonal format avoids clonal artifacts and captures population-level heterogeneity, ensuring robust functional analyses. Disruption of the EIF4E3 gene abrogates protein function, enabling study of its role in cap-dependent translation regulation.
HeLa cells, a human cervical adenocarcinoma line, are a cornerstone of cancer research due to their robust growth, ease of manipulation, and well-characterized signalling. They exhibit active mTOR signalling and dysregulated translation, making them an ideal host for investigating translational control mechanisms. This background provides a physiologically relevant cancer model for studying EIF4E3 function.
EIF4E3 encodes a cap-binding translation repressor that modulates specific mRNA translation under stress. It interacts with eIF4G and the mRNA cap complex, and is regulated by mTORC1 via 4E-BP1, as well as by hypoxia and stress-activated kinases. EIF4E3 functions downstream of mTORC1 to repress pro-oncogenic and apoptotic mRNAs. Its knockout disrupts this repression, altering cap-dependent translation and affecting proliferation and survival through pathways involving S6K1 and other factors.
In HeLa cells, EIF4E3 loss relieves translational repression, potentially tipping the balance toward altered proliferation or apoptosis. The polyclonal knockout enables reproducible assessment of mTOR pathway interplay, stress responses, and apoptotic signalling without clonal bias, making it valuable for dissecting the specific contributions of EIF4E3 in a cancer context.
Applications include mechanistic studies of translation control, screening for translation inhibitors, and drug resistance research. Assays such as polysome profiling, RT-qPCR, western blotting for phospho-S6K1 and 4E-BP1, and caspase activation assays can be employed. Colony formation and viability assays provide functional readouts. This model supports exploration of eIF4E family roles in cancer and stress biology. For further information, contact Ascent Research.
