The GKAP1 Knockout Raji Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population featuring targeted disruption of the GKAP1 gene within the Raji B lymphocyte background. This loss-of-function model is generated via CRISPR/Cas9-mediated gene disruption, producing a heterogeneous pool of cells ideal for studying GKAP1-dependent functions. The polyclonal format avoids clonal bias and provides a representative knockout context for investigating cytoskeletal organization and cell adhesion signaling.
Raji cells are a well-established human Burkitt lymphoma-derived B lymphocyte line, widely used for studies of adaptive immunity. These suspension cells actively present antigens, produce antibodies, and engage in critical signaling cascades governing B cell activation, adhesion, and migration. The Raji background offers a unique opportunity to explore non-neuronal functions of GKAP1, a scaffolding protein originally characterized in synaptic contexts, within immune cell biology.
GKAP1 acts as a master scaffold at the postsynaptic density by linking NMDA receptors to downstream signaling and the actin cytoskeleton. It directly binds DLG4/PSD-95, SHANK2, and Cortactin, forming a complex regulated by NMDA receptor activation, CaMKII, and PKA. This network controls Rho GTPases such as Rac1 and actin polymerization, and also tunes AMPA receptor trafficking. GKAP1 knockout therefore disrupts synaptic architecture, impairs receptor clustering, and dysregulates cytoskeletal dynamics, with implications for synaptic organization and plasticity.
While GKAP1 is predominantly studied in neurons, its scaffold functions may extend to other cells, such as B lymphocytes, where cytoskeletal remodeling is essential for adhesion, migration, and immunological synapse formation. In Raji cells, GKAP1 could similarly coordinate adhesion-associated complexes, making this knockout a valuable model for uncovering non-canonical roles of GKAP1 in immune cell adhesion and signaling. This model enables comparative analyses to distinguish general cell biological functions from neuron-restricted mechanisms.
This polyclonal knockout is suited for a range of experimental workflows. Immunofluorescence and co-immunoprecipitation permit visualization and validation of disrupted protein complexes, while western blotting and RT-qPCR quantify molecular changes. Functional assays??including cell adhesion, migration, and flow cytometry??elucidate GKAP1??s impact on lymphocyte dynamics, and calcium imaging can probe signaling alterations. The model also supports drug screening targeting synaptic scaffold interactions. For additional information, please contact Ascent Research.
