EIF2D Knockout Jurkat Polyclonal Cells are a CRISPR/Cas9-edited polyclonal cell population disrupting EIF2D in the Jurkat human T lymphoblast line. EIF2D mediates non-canonical translation initiation on leaderless mRNAs and reinitiation after short upstream open reading frames (uORFs), independent of GTP and eIF2. This polyclonal knockout model provides a heterogeneous cell pool for loss-of-function studies in a well-characterized T cell leukemia background, suitable for perturbing specialized translation pathways.
The Jurkat cell line originates from a 14-year-old male with acute T cell leukemia and is a standard model for T lymphocyte biology, including TCR signaling, immune activation, cytokine production, and apoptosis. This immortalized T lymphoblast background offers a physiologically relevant system for studying translational control in T cell function under stress. The knockout is introduced into this established line to capitalize on its well-characterized signaling pathways.
EIF2D interacts with the 40S ribosomal subunit, initiator tRNAMet, eIF3, eIF1, and eIF5 to mediate initiation on leaderless mRNAs and uORF-containing transcripts. Its activity is modulated by mTOR signaling and stress cues (amino acid deprivation, ER stress, hypoxia) acting through mTOR, S6K1, 4E-BP1, GCN2, and PERK. Downstream, it promotes translation of stress-responsive targets such as ATF4, integrating with eIF2??/??/?? and eIF4E/eIF4G pathways within the integrated stress response network.
In Jurkat T cells, EIF2D knockout likely disrupts translation of stress-related transcripts during T cell activation or leukemic stress. Since TCR engagement and cytokines induce metabolic and ER stress, EIF2D loss may impair translational reprogramming needed for proliferation and effector functions. This model dissects non-canonical initiation’s role in malignant T cell adaptation, revealing potential vulnerabilities in translation-dependent survival.
Researchers can use this knockout population for polysome profiling, RNA-seq, and reporter assays with leaderless or uORF constructs to study non-canonical translation. Applications include analyzing translational control in T cell stress using tunicamycin-induced ER stress, SUnSET metabolic labeling, and flow cytometry for activation markers (CD69, CD25). The model supports screening for translational modulators and apoptosis studies, along with standard Western blotting and RT-qPCR. For product inquiries, contact Ascent Research.
