The NEXN Knockout Raji Polyclonal Cells represent a CRISPR/Cas9-mediated gene-disrupted polyclonal population derived from the human Raji B lymphoblast cell line, engineered for loss-of-function analysis of the NEXN (nexilin) gene. This polyclonal knockout cell population provides a powerful tool to dissect NEXN-dependent actin cytoskeleton regulation in a lymphoid background without the need for clonal isolation, enabling population-level functional studies.
The Raji cell line, originally established from an Epstein-Barr virus (EBV)-positive Burkitt’s lymphoma patient, serves as a well-characterized model of transformed B lymphocytes. These cells maintain key features of mature B cells, including the ability to form immune synapses, and are extensively utilized in lymphoma biology, immunology, and signal transduction research. Their continuous growth and genetic tractability make Raji cells an ideal host for CRISPR-based gene editing.
NEXN encodes an F-actin-binding protein that crosslinks and stabilizes filamentous actin, mediating focal adhesion maturation and cell migration. NEXN is regulated by the Rho GTPases RhoA and Rac1 downstream of integrin signaling and mechanical stress, and its transcription is controlled by the SRF/MRTF pathway. The protein directly interacts with F-actin, vinculin, and alpha-actinin, recruiting vinculin to adhesion sites and promoting actin stabilization. Key pathway components, including integrins, talin, RhoA, ROCK, mDia, vinculin, and F-actin, converge on NEXN to orchestrate cytoskeletal dynamics and adhesion complex assembly.
In the context of Raji B lymphocytes, disruption of NEXN impairs actin cytoskeleton organization, which is predicted to compromise immune synapse formation??a critical process for antigen recognition and signaling. Additionally, NEXN knockout likely attenuates integrin-mediated adhesion and migration, processes essential for lymphoma cell dissemination and microenvironment interactions. This polyclonal knockout model thus enables investigation of how NEXN-dependent actin regulation impacts B cell adhesion, motility, and immune synapse architecture, offering insights into lymphoma pathogenesis.
Typical applications include Western blotting for NEXN and actin, immunofluorescence staining of F-actin (phalloidin) and vinculin, cell adhesion assays, Transwell migration/invasion assays, flow cytometry for integrin expression, Rho GTPase activation assays, and immune synapse formation analyses. These cells are also suitable for drug screening campaigns targeting cytoskeletal pathways in lymphoma. For further information, please contact Ascent Research.
