The ADD1 Knockout Jurkat Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population derived from the Jurkat human T lymphocyte leukemia line. Disrupting the ADD1 gene, this population enables loss-of-function studies of alpha-adducin, a cytoskeletal protein involved in spectrin-actin network assembly. The polyclonal format reflects a pool of edited cells with diverse CRISPR-induced gene disruptions, facilitating rapid phenotypic analysis without single-cell cloning.
The Jurkat cell line, originating from a T cell leukemia patient, is a widely used model for T cell signaling and activation. Its well-characterized TCR-mediated pathways and ease of genetic manipulation make it ideal for investigating cytoskeletal dynamics in immune cell function. Its T cell leukemia origin provides a relevant background for studying signal transduction aberrations, supporting reproducible and translationally relevant results across functional assays.
Encoded by ADD1, alpha-adducin is a critical component of the cortical spectrin-actin cytoskeleton, mediating membrane stability, cell adhesion, and ion transport. It directly binds spectrin, actin, calmodulin, and protein 4.1 (EPB41) to assemble dynamic scaffolds. Upstream regulators include protein kinase C (PKC), Rho-associated kinase (ROCK), and cAMP-dependent protein kinase (PKA), while downstream effects involve modulation of Na+/K+-ATPase activity and influence on calcium and Wnt signaling. These interactions place alpha-adducin at a nexus of mechanical and signaling functions.
In Jurkat T cells, ADD1 knockout ablates alpha-adducin, disrupting spectrin-actin organization and compromising membrane integrity. This alters actin dynamics, impairing TCR signaling, cell adhesion, and migration, as predicted by the mechanistic model. The knockout thus provides a powerful tool to examine the role of the cytoskeleton in immune synapse formation, T cell activation, and leukemogenic processes.
Applications include T cell activation studies, cytoskeletal remodeling analyses, and ion transport regulation research. Typical assays comprise western blotting, immunofluorescence, flow cytometry, actin polymerization, transwell migration, calcium flux, and phospho-immunoblotting. These polyclonal knockout cells enable robust, cost-effective investigation of ADD1-dependent pathways in a human T cell context, also supporting hypertension research by linking alpha-adducin to ion homeostasis. For detailed protocols and technical support, please contact Ascent Research.
