The EIF2A Knockout 786-O Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population targeting EIF2A in the human 786-O renal cell adenocarcinoma line. This heterogeneous pool of knockout cells enables robust loss-of-function studies without clonal isolation, reflecting diverse editing outcomes. EIF2A encodes a GTP-independent translation initiation factor that is particularly active during cellular stress, making this model essential for investigating non-canonical protein synthesis mechanisms in renal carcinoma.
The 786-O cell line is derived from clear cell renal cell carcinoma (ccRCC) and exhibits epithelial morphology. It is widely used to study ccRCC pathogenesis, drug resistance, and tumor biology, harboring characteristic VHL mutations. This host provides a physiologically relevant environment to examine EIF2A function in cancer, especially regarding adaptive stress responses critical for tumor cell survival.
EIF2A facilitates Met-tRNAi binding to the 40S ribosomal subunit independently of GTP, serving as an alternative initiation factor when canonical eIF2 is inhibited during ER stress, oxidative stress, or nutrient deprivation. Upstream, EIF2A is regulated by mTORC1 and cellular stress signals. It interacts directly with the 40S subunit, eIF3, and eIF5B, and intersects with the integrated stress response and mTOR signaling pathways. EIF2A selectively promotes translation of specific mRNAs, often with structured 5′ UTRs. Knockout disrupts this pathway, impairing stress-induced protein synthesis and potentially altering the proteome under adverse conditions.
In 786-O cells, EIF2A loss likely compromises the ability to sustain protein synthesis during stress, impacting proliferation and survival in the hypoxic tumor microenvironment. This model enables dissection of non-canonical translation contributions to ccRCC growth, stress resistance, and therapeutic sensitivity. By comparing wild-type and EIF2A-knockout populations, researchers can evaluate effects on stress granule formation, pro-survival factor expression, and overall cellular fitness.
Applications include functional studies of translation initiation, stress response mechanisms in renal carcinoma, and target validation for translation inhibitors. Assays such as Western blotting, polysome profiling, puromycin incorporation, stress granule analysis, viability assays, RNA-seq for translatome analysis, and co-immunoprecipitation of translation complexes are supported. For further information, contact Ascent Research.
