The DUSP23 Knockout Raji Polyclonal Cells product consists of a CRISPR/Cas9-edited polyclonal knockout cell population derived from the Raji B lymphocyte line, targeting the DUSP23 gene. This population-based knockout model offers a heterogeneous disruption of the target gene across a pool of cells, enabling robust loss-of-function analyses without the clonal variability inherent to single-cell-derived lines. The polyclonal format is particularly suited for studying gene function in contexts that benefit from population-level responses, such as signal transduction studies and drug sensitivity screening.
Raji cells are a human B lymphocyte line established from an Epstein-Barr virus (EBV)-negative Burkitt lymphoma, retaining key immunological functions including antibody production, antigen presentation, and immune surveillance. Widely employed in immunological and cancer research, Raji cells provide a relevant system for modeling B cell biology, lymphomagenesis, and the signaling networks that drive lymphocyte activation and proliferation. Their ease of culture and well-characterized signaling pathways make them an ideal host for gene editing and functional genomic studies.
The DUSP23 gene encodes a dual-specificity phosphatase that specifically dephosphorylates and inactivates the mitogen-activated protein kinases ERK1/2 (MAPK1/3) and p38 MAPK (MAPK14). Operating within the MAPK/ERK and p38 MAPK cascades, DUSP23 serves as a negative feedback regulator, with its expression induced by upstream stimuli such as EGF, PDGF, serum, and MEK-ERK signaling. Upon activation, ERK1/2 and p38 phosphorylate downstream targets including RSK, MK2, ATF2, and c-Fos, transducing signals that control cell cycle progression and transcriptional responses. Disruption of DUSP23 is therefore expected to prolong kinase activation, altering cellular outcomes.
In the Raji B lymphocyte background, loss of DUSP23 phosphatase activity is predicted to dysregulate MAPK signal duration and amplitude following B cell receptor engagement or mitogenic stimulation. This may enhance ERK1/2- and p38-dependent processes such as proliferation, survival, and cytokine production, providing a model for hyperactive MAPK signaling in lymphomagenesis. The polyclonal knockout pool enables the study of how sustained kinase activation influences B cell function, antigen presentation, and immune surveillance, key areas in lymphoma research.
This knockout cell pool is well-suited for a range of experimental applications, including B cell receptor signaling studies, MAPK pathway functional analysis, drug target validation, and cell cycle regulation research. Researchers can employ techniques such as western blotting, RT-qPCR, phospho-signaling analysis, cell cycle flow cytometry, proliferation assays, luciferase reporter assays, and drug sensitivity screening to characterize the consequences of DUSP23 knockout. For additional product information or technical inquiries, please contact Ascent Research.
