The KIF1B Knockout HEK293T Polyclonal Cells product is a CRISPR/Cas9-edited polyclonal knockout cell population designed to disrupt the human KIF1B gene. This engineered loss-of-function model enables researchers to interrogate the cellular roles of the KIF1B kinesin motor protein, which is essential for anterograde transport of mitochondria and synaptic vesicles along microtubules. The polyclonal format encompasses a heterogeneous mixture of edited alleles, providing a representative knockout background for functional studies without the selective pressure of clonal isolation.
The host cell line, HEK293T, is a human embryonic kidney epithelial derivative that stably expresses the SV40 large T antigen. This feature permits high-level episomal replication of plasmids containing the SV40 origin, making the line a preferred platform for recombinant protein expression, lentiviral and retroviral packaging, and transient gene delivery. Its robust growth characteristics and biochemical tractability support a wide spectrum of cell biological and signaling assays.
KIF1B encodes a plus-end-directed microtubule motor that transports mitochondria and synaptic vesicles. It is transcriptionally activated by E2F1 and acts downstream of NGF/TrkA signaling. KIF1B interacts with microtubules, KIF1B-binding protein (KBP), and the mitochondrial adaptor Miro1 to coordinate cargo motility. The KIF1B?? isoform, upon E2F1 induction, promotes mitochondrial fragmentation, cytochrome c release, and caspase-9 activation, executing intrinsic apoptosis.
Although HEK293T cells originate from renal epithelium, they retain an intact apoptotic apparatus and a dynamic mitochondrial network, making them a suitable model for dissecting KIF1B-dependent cell death and transport mechanisms. The polyclonal knockout population avoids clonal bias and allows the study of KIF1B function in a genetically diverse cell pool, facilitating the analysis of mitochondrial redistribution and apoptotic signaling pathways in a convenient, highly transfectable host.
These polyclonal cells are suited for axonal transport and mitochondrial dynamics studies, neurodegenerative disease modeling (e.g., Charcot-Marie-Tooth disease type 2A1), and neuroblastoma tumor suppressor research. Compatible assays include western blotting, immunofluorescence, live-cell mitochondrial transport imaging, TUNEL staining, caspase activity measurements, and cell viability tests. For additional technical information, please contact Ascent Research.
