The KIF1C Knouckout Jurkat Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population originating from the Jurkat human T-lymphoblast cell line, designed for targeted disruption of the KIF1C gene. This loss-of-function model enables researchers to investigate the cellular consequences of KIF1C depletion in a suspension-adapted, immortalized T-cell context. The polyclonal nature of the population preserves genetic heterogeneity while abolishing functional KIF1C expression, providing a versatile tool for studying motor-dependent processes without the clonal selection artifacts. Researchers can employ this model in experiments requiring robust knockout efficiency across a mass population, coupled with the tractable proliferation and well-characterized signaling of Jurkat cells. The cells are supplied as a ready-to-use suspension culture, maintaining the characteristic rapid division rate and surface marker profile of the parental line.
Jurkat cells are an extensively validated model derived from the peripheral blood of a patient with T-cell acute lymphoblastic leukemia, exhibiting constitutive activation of T-cell receptor signaling pathways and a high proliferation rate. As a suspension cell line, they facilitate large-scale experimental setups, including high-throughput screening and biochemical assays requiring ample material. Their well-documented apoptosis machinery, IL-2 production upon stimulation, and expression of key T-cell surface antigens make them indispensable in immunology and oncology research. In the context of KIF1C knockout, the Jurkat background allows dissection of motor protein functions that intersect with leukemic T-cell behavior, such as integrin-mediated adhesion, migration, and immune synapse formation. The absence of adherent growth constraints also simplifies live-cell imaging of intracellular transport dynamics.
KIF1C encodes a kinesin-3 family motor protein that moves processively toward the plus ends of microtubules, transporting vesicular cargoes essential for cell adhesion and migration. Its activity is tightly regulated by upstream factors including Rab6 GTPase and DENND2A, which enhance cargo binding, and phosphorylation by kinases such as PKA, PKC, and CDK1 that modulate motor function and 14-3-3 protein association. The motor transports integrin-containing vesicles??particularly those bearing ??2??1 integrin??to focal adhesion sites, promoting adhesion plaque turnover and cell spreading. Downstream, KIF1C influences focal adhesion kinase (FAK) activation and paxillin dynamics, linking microtubule-based transport to integrin signaling. In the Jurkat knockout model, disruption of KIF1C impairs these trafficking events, leading to reduced surface integrin levels and compromised adhesion to fibronectin, thereby providing a direct readout of motor-dependent cellular functions.
In Jurkat T lymphoblasts, KIF1C depletion has particular relevance for understanding T-cell motility and the formation of stable immune synapses, processes that rely on dynamic reorganization of integrin-based adhesions. The knockout model mimics pathological states seen in hereditary spastic paraplegia type 58 (SPG58), where KIF1C mutations lead to axonal degeneration, yet also offers insights into cancer metastasis where aberrant motor activity promotes invasive migration. Jurkat cells endogenously express the Rab6-DENND2A regulatory module, making them a physiologically relevant system to study how kinesin-3 motors coordinate vesicle trafficking with cell adhesion. Consequently, this model enables exploration of how motor protein dysfunction contributes to leukemic T-cell dissemination and could inform strategies targeting adhesion-dependent survival signals in T-cell malignancies.
This polyclonal knockout cell population is suited for diverse research applications, including high-resolution analysis of kinesin-dependent vesicle transport via live-cell microscopy, quantification of integrin recycling using flow cytometry, and functional assessment of adhesion and migration through transwell and cell-spreading assays. It supports mechanistic studies of the KIF1C?C14-3-3?CRab6 axis through co-immunoprecipitation, phospho-protein analysis, and immunofluorescence colocalization. Additionally, the model facilitates drug discovery efforts such as high-throughput screening for motor inhibitors or modulators of integrin trafficking, and can be integrated into studies of SPG58, neurodevelopment, and T-cell leukemia. For further information on integrating these cells into your experimental workflows, please contact Ascent Research.
