The PDLIM5 Knockout Raji Polyclonal Cells comprise a heterogeneous CRISPR/Cas9-edited Raji B lymphocyte population with targeted disruption of the PDLIM5 gene. This polyclonal knockout model is supplied as a mixed population, enabling bulk analysis of PDLIM5 loss of function without clonal isolation. It serves as a versatile tool for examining the scaffold protein’s contributions to B-cell adhesion, migration, and signaling.
The Raji cell line originates from a male patient with Epstein-Barr virus-associated Burkitt lymphoma. As a B lymphocyte model, it retains key features of humoral immunity, including antibody secretion and antigen presentation. Raji cells are widely employed to explore oncogenic signaling, B-cell receptor biology, and lymphoma pathogenesis, making them an appropriate host for studying cytoskeletal dynamics in a malignant context.
PDLIM5 acts as a multifunctional adaptor that physically bridges protein kinase C (PKC) to the actin cytoskeleton via direct interactions with alpha-actinin and actin. This scaffolding positions PKC near its substrates to modulate focal adhesion dynamics, cell adhesion, and migration. PDLIM5 is activated downstream of integrin signaling and mechanical stress, which trigger FAK-mediated phosphorylation events. In turn, PDLIM5 regulates actin polymerization and focal adhesion turnover, thereby coordinating cell morphology and motility. Additional binding partners such as 14-3-3 proteins and the ubiquitin ligase NEDD4 suggest involvement in broader signaling and degradation networks.
In Raji lymphoma cells, ablation of PDLIM5 provides a system to investigate how its loss impacts B-cell adhesion to extracellular matrix and cellular motility??processes that are often dysregulated in hematologic malignancies. The polyclonal knockout population allows assessment of collective cell behavior, reflecting the heterogeneity of tumor populations. This model is particularly valuable for studying the interplay between PKC signaling and actin cytoskeleton remodeling in the context of lymphoma progression.
Researchers can utilize these cells for a variety of experimental approaches, including quantitative cell adhesion assays to measure attachment to fibronectin or VCAM-1, Transwell migration studies to evaluate chemotactic responses, and immunofluorescence visualization of focal adhesion complexes. The knockout model supports molecular characterization through Western blotting, RT-qPCR, and co-immunoprecipitation to confirm target ablation and probe PDLIM5 interactors. Additionally, phospho-specific flow cytometry can reveal perturbations in PKC-mediated signaling cascades. The PDLIM5 Knockout Raji Polyclonal Cells are also suitable for functional complementation by reintroducing PDLIM5 variants, aiding structure?Cfunction analyses. For further technical details or personalized support, please reach out to Ascent Research.
