The EIF4A2 Knockout HeLa Polyclonal Cells product comprises a polyclonal population of HeLa cells subjected to CRISPR/Cas9-mediated disruption of the EIF4A2 gene. This pool of edited cells serves as a loss-of-function model to investigate the role of the ATP-dependent RNA helicase eIF4A2 in cap-dependent translation initiation. The polyclonal format avoids clonal selection, providing a heterogeneous knockout population that reflects aggregate effects of diverse editing events across a bulk culture, making it suitable for translation studies where gene-disrupted pools retain experimental scalability and minimize clonal artifacts.
The parental HeLa cell line is an immortalized human cervical adenocarcinoma epithelial model widely used in cancer biology and translational research. HeLa cells exhibit robust proliferation and express oncogenic drivers, offering a well-characterized system to dissect translation control mechanisms. Their epithelial origin and genetic background make them an appropriate host for exploring how perturbation of translation initiation factors influences tumor cell behavior.
EIF4A2 is a DEAD-box RNA helicase that uses ATP hydrolysis to unwind secondary structures in mRNA 5?? untranslated regions (UTRs), facilitating ribosomal scanning during cap-dependent translation. It functions within the eIF4F complex, interacting with eIF4G and eIF4A1, and is stimulated by eIF4B and eIF4H. Upstream, mTORC1 and growth factors regulate EIF4A2 activity via MYC and the repressor PDCD4. Downstream, EIF4A2 preferentially drives translation of mRNAs with structured 5?? UTRs, including MYC, CCND1, and BCL2, thereby controlling proliferation and survival. The mTOR?CeIF4E?CeIF4G?CEIF4A2 axis, together with 4E-BPs and S6K, constitutes a central translation regulatory hub.
In HeLa cells, EIF4A2 knockout attenuates translation of oncogenic mRNAs critical for sustained proliferation, providing a physiologically relevant model to study selective translational reprogramming in cancer. Because HeLa cells depend on robust protein synthesis for rapid division, loss of eIF4A2 helicase activity probes the dependency on unwinding of structured 5?? UTRs. The polyclonal knockout population enables dissection of both global and transcript-specific translational changes and evaluation of therapeutic targeting of eIF4A in cervical adenocarcinoma.
Applications include Western blotting for targets like CCND1 and MYC to confirm functional knockout, polysome profiling and cap-binding assays for translation efficiency, reporter assays with structured 5?? UTRs, proliferation and viability assays, and RNA helicase activity measurements. It is suited for screening translation inhibitors and investigating viral host translation subversion. For further technical specifications or inquiries, please contact Ascent Research.
