The ARHGAP12 Knockout Jurkat Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population derived from the Jurkat human T lymphocyte line, engineered to disrupt the ARHGAP12 gene. This loss-of-function model enables study of ARHGAP12-dependent Rho GTPase regulation in T cells. The polyclonal pool captures heterogeneous CRISPR/Cas9-mediated disruptions without clonal selection, offering a robust system for investigating actin cytoskeleton dynamics, adhesion, and migration in leukemia and immune cell biology.
The Jurkat cell line is an immortalized human T lymphocyte line derived from a patient with acute T cell leukemia. Widely used in immunological and cancer research, Jurkat cells model T cell receptor signaling, activation, and apoptosis. Their continuous proliferation and stable genome make them amenable to CRISPR editing and functional studies. As a suspension line with well-defined signaling, Jurkat cells provide a physiologically relevant context for analyzing Rho GTPase pathway perturbations in lymphocytes.
ARHGAP12 encodes a Rho GTPase-activating protein that negatively regulates RhoA, Rac1, and Cdc42 by accelerating GTP hydrolysis. Via its GAP domain, ARHGAP12 promotes the inactive GDP state of these GTPases, modulating actin reorganization, focal adhesion dynamics, and cell migration. Upstream regulators including integrin adhesion, growth factor receptors (e.g., EGFR, PDGFR), and PI3K signaling control ARHGAP12 activity. ARHGAP12 inactivates RhoA, Rac1, and Cdc42, which influences downstream effectors ROCK, PAK, and cofilin to regulate actin polymerization and focal adhesion turnover. Additionally, ARHGAP12 interacts with GIT1, paxillin, and FAK at focal adhesions, coordinating adhesion and migration signals.
In Jurkat T cells, ARHGAP12 disruption is expected to elevate active RhoA, Rac1, and Cdc42, leading to enhanced stress fiber formation, altered lamellipodial dynamics, and increased adhesion and migration. Since Rho GTPases contribute to T cell receptor signaling and immune synapse formation, ARHGAP12 knockout may affect activation and proliferation. Thus, this model facilitates dissection of Rho GTPase contributions to leukemic T cell phenotypes such as aberrant adhesion and migration. The polyclonal knockout population provides a complementary loss-of-function system to siRNA or pharmacological inhibition.
This knockout model supports diverse applications, including T cell adhesion and migration assays (e.g., Transwell migration) and integrin profiling by flow cytometry. Rho GTPase pathway interrogation is enabled through Rho GTPase activity assays (G-LISA) and phalloidin staining. The cells are valuable for T-ALL pathogenesis studies and drug screening against Rho pathway targets. They also serve as a CRISPR validation tool via ARHGAP12 Western blotting or RT-qPCR. For further information or technical support, please contact Ascent Research.
