NDUFS4 Knockout Raji Polyclonal Cells consist of a CRISPR/Cas9-edited polyclonal population of the Raji B lymphocyte line, bearing targeted disruption of the NDUFS4 gene. This loss-of-function resource enables in-depth investigation of mitochondrial complex I biology in a Burkitt’s lymphoma context. The polyclonal format preserves a heterogeneous array of editing events, avoiding clonal selection bias and mimicking population-level gene inactivation for robust functional assays. This system avoids the limitations of single-clone selection, providing a broad-based knockout tool for mitochondrial research.
Raji cells are a suspension B lymphocyte line established from an EBV-transformed Burkitt’s lymphoma, exhibiting features such as surface immunoglobulin expression and the ability for antigen presentation and antibody production. They are extensively employed in immunology and cancer research as a representative model for B-cell malignancies and Epstein-Barr virus biology. The cell line’s rapid growth, genetic tractability, and defined signaling networks render it suitable for genetic manipulation and functional studies of mitochondrial pathways in a lymphoid neoplasm context.
NDUFS4 encodes an accessory subunit of mitochondrial complex I (NADH:ubiquinone oxidoreductase), essential for electron transfer and proton pumping across the inner membrane. Its transcription is coregulated by PGC-1??, NRF1, TFAM, and ERR?? in response to cellular energy demands. NDUFS4 interacts with complex I core subunits including NDUFS1, NDUFS2, and NDUFV1, and relies on assembly factors like NDUFAF1 for proper integration. Knockout of this subunit disrupts complex I activity, leading to diminished ATP production, an elevated NAD+/NADH ratio, and excess ROS generation. These metabolic defects propagate through the electron transport chain, affecting complexes II?CV, cytochrome c, and coenzyme Q, ultimately depolarizing the mitochondrial membrane and impairing oxidative phosphorylation.
In the Raji B-cell context, NDUFS4 knockout disrupts mitochondrial respiratory chain function, potentially influencing metabolic reprogramming inherent to Burkitt’s lymphoma, which relies on aerobic glycolysis. The resultant bioenergetic stress and elevated ROS can impair cell viability and activate redox-sensitive signaling cascades. This model is especially relevant for investigating how mitochondrial dysfunction contributes to B-cell malignancy pathogenesis and for translational studies connecting Leigh syndrome with cancer metabolism. It also provides a platform to examine interactions between EBV-driven transformation and mitochondrial performance.
This polyclonal NDUFS4 knockout model supports diverse applications, including mitochondrial disease modeling (e.g., Leigh syndrome), studies of ROS signaling and metabolic adaptation in cancer, and drug screening for complex I deficiencies. Typical assays include Western blot confirmation of NDUFS4 loss, complex I activity measurements, Seahorse metabolic flux analysis, ATP quantification, ROS detection with DCFDA, JC-1 mitochondrial membrane potential assessment, and RNA-seq profiling. The heterogeneous population enables experiments that better reflect physiological variability, suitable for identifying metabolic vulnerabilities in lymphoma. For further technical information, please contact our research support team.
