The EIF4A2 Knockout MES-OV Polyclonal Cells are a CRISPR/Cas9-edited polyclonal population of MES-OV human ovarian cancer epithelial cells with targeted disruption of the EIF4A2 gene. Generated via CRISPR/Cas9-mediated gene disruption, this polyclonal model circumvents clonal selection biases and provides a heterogeneous knockout pool for studying translational control in ovarian cancer.
The MES-OV cell line, derived from a human ovarian adenocarcinoma, exhibits a mesenchymal phenotype and is an established model for investigating translational dysregulation and drug resistance. Its active mTOR and MAPK signaling pathways make it particularly suited for dissecting the function of translation initiation factors such as EIF4A2.
EIF4A2 is an ATP-dependent RNA helicase integral to the eIF4F initiation complex, where it interacts with EIF4E and EIF4G and is regulated by cofactors EIF4B, EIF4H, and the suppressor PDCD4. EIF4A2 unwinds structured 5?? UTRs to enable ribosome scanning and cap-dependent translation. Its activity is governed by upstream oncogenic pathways: mTORC1 phosphorylates EIF4EBP1, releasing EIF4E to assemble the eIF4F complex, while PI3K/AKT and MAPK/ERK signaling further converge on this machinery. EIF4A2 preferentially translates mRNAs with complex 5?? UTRs, notably c-MYC, BCL-2, and CCND1, thereby driving proliferation and survival. In ovarian cancer, this helicase-mediated translational control is frequently dysregulated, fueling malignancy and chemoresistance.
Knockout of EIF4A2 in MES-OV cells creates a robust loss-of-function model to interrogate its role in ovarian cancer. Given the mesenchymal background and reliance on cap-dependent translation for oncogenic protein synthesis, EIF4A2 disruption impairs translation of critical oncogenes and anti-apoptotic factors. This model is ideal for validating EIF4A2 as a therapeutic target and for exploring resistance mechanisms to eIF4A inhibitors such as rocaglates and hippuristanol. It also enables studies of stress granule dynamics and translational reprogramming under therapeutic pressure.
This polyclonal knockout cell population can be employed in diverse assays. Western blotting and RT-qPCR confirm EIF4A2 loss, while polysome profiling and RNA-seq delineate translational changes. Helicase activity assays directly measure enzymatic function. Functional readouts include MTT viability and colony formation assays, and drug sensitivity testing with rocaglate or hippuristanol assesses pharmacological dependence. Flow cytometry for apoptosis further characterizes the role of EIF4A2 in cell death. This model is also suited for studying stress granule formation. For further information, please contact Ascent Research.
