MCU Knockout Raji Polyclonal Cells provide a CRISPR/Cas9-edited polyclonal cell population with targeted disruption of the MCU gene in the Raji B lymphocyte cell line. This loss-of-function model enables precise investigation of mitochondrial calcium uniporter function in a human Burkitt lymphoma background. The polyclonal knockout format offers a genetically heterogeneous population suitable for studying MCU-dependent phenotypes without clonal selection bias, reflecting population-level responses relevant to cancer cell biology and drug screening.
The Raji cell line, an Epstein-Barr virus-positive lymphoblastoid line derived from a Burkitt lymphoma patient, serves as a well-characterized model for B lymphocyte biology and lymphomagenesis. Its robust growth characteristics and well-defined signaling pathways make it an ideal host for dissecting mitochondrial calcium-dependent processes in lymphoid malignancies. Raji cells exhibit active store-operated Ca2+ entry and intact apoptotic machinery, providing a physiologically relevant context for assessing MCU-mediated mitochondrial Ca2+ uptake and downstream metabolic and cell-fate decisions.
MCU encodes the pore-forming subunit of the mitochondrial calcium uniporter complex, which mediates rapid Ca2+ influx into the mitochondrial matrix upon cytosolic Ca2+ elevation. MCU activity is tightly regulated by interacting partners, including the gatekeeping subunits MICU1 and MICU2, the essential membrane protein EMRE, and the auxiliary factor MCUR1. Upstream, MCU responds to Ca2+ released via IP3 receptors and store-operated Ca2+ entry channels. Downstream, imported Ca2+ activates pyruvate dehydrogenase, thereby stimulating oxidative phosphorylation and ATP synthesis, while excessive Ca2+ overload triggers opening of the mitochondrial permeability transition pore (mPTP), releasing cytochrome c and activating caspases to initiate apoptosis. MCU also interfaces with necroptotic pathways through mPTP-dependent mechanisms.
In the context of Raji B lymphocytes, MCU deficiency disrupts mitochondrial Ca2+ homeostasis, impairing metabolic reprogramming and altering the balance between apoptosis and survival signaling. Given that Burkitt lymphoma cells rely on robust mitochondrial respiration and Ca2+-driven metabolic adaptation, this knockout model is instrumental for dissecting how mitochondrial Ca2+ flux influences lymphomagenesis, chemoresistance, and necroptosis evasion. The polyclonal nature preserves the spectrum of functional impacts, facilitating the identification of MCU-dependent vulnerabilities in lymphoma metabolism.
This product supports diverse experimental applications, including fluorescence-based mitochondrial Ca2+ imaging, mitochondrial membrane potential assays, and Seahorse metabolic flux analysis to quantify oxidative phosphorylation and glycolytic shifts. Western blotting and RT-qPCR confirm target disruption and assess expression changes in interacting partners such as MICU1, MICU2, and EMRE. Apoptosis assays and necroptosis evaluations further delineate MCU’s role in programmed cell death pathways. The MCU Knockout Raji Polyclonal Cells are thus a versatile tool for screening MCU-targeted therapies and studying calcium signaling?Cmetabolism crosstalk in B cell malignancies. For further technical inquiries or support, please contact Ascent Research.
