The KIF1B Knockout HAP1 Polyclonal Cells are a polyclonal population of CRISPR/Cas9-edited HAP1 cells carrying targeted disruption of the KIF1B gene. This knockout pool provides a robust loss-of-function system for dissecting KIF1B biology, capturing the averaged effects of gene disruption across a genetically diverse edited cell population. The polyclonal format avoids artifacts associated with individual clonal isolates and enables functional studies in a physiologically relevant human cellular context.
HAP1 is a near-haploid, fibroblast-like human cell line derived from KBM-7 chronic myeloid leukemia cells. The near-haploid karyotype minimizes genetic redundancy and simplifies CRISPR/Cas9 editing, while preserving many core signaling and trafficking pathways. HAP1 cells are therefore widely adopted for investigating gene function, protein interactions, mitochondrial dynamics, apoptosis, and intracellular transport.
KIF1B encodes a member of the kinesin-3 family of microtubule-based motors responsible for anterograde transport of mitochondria and synaptic vesicle precursors. In addition to its transport role, KIF1B functions as a tumor suppressor by inducing apoptosis through a direct interaction with the scaffold protein DLG4 (PSD-95). Its activity is regulated by upstream PI3K/AKT and NGF/TrkA signaling, and it controls downstream mitochondrial distribution, ATP production, and synaptic vesicle localization. KIF1B operates within a multiprotein network that includes the adaptor KIFBP, the mitochondrial trafficking factors TRAK2 and Miro, and the phosphoinositide PtdIns(4,5)P2, which collectively facilitate cargo attachment and processive movement along microtubules.
Disruption of KIF1B in HAP1 cells provides a model system to study mitochondrial trafficking defects and apoptosis dysregulation, with direct relevance to Charcot-Marie-Tooth disease type 2A1, Parkinson??s disease, and neuroblastoma. Although HAP1 cells are non-neuronal, they express the essential components for mitochondrial transport and apoptosis, allowing cell-autonomous investigation of KIF1B-dependent phenotypes. The polyclonal knockout population facilitates the identification of consistent and penetrant phenotypic changes associated with gene disruption.
This polyclonal knockout product is suited for a range of experimental approaches, including quantitative live-cell imaging of mitochondrial motility, co-immunoprecipitation of KIF1B-interacting partners such as DLG4 and KIFBP, Western blot-based validation of target loss, and functional assays measuring apoptosis induction, cell migration, and global transcriptomic alterations via RNA-seq. These applications support mechanistic studies linking axonal transport and mitochondrial distribution to neurodegeneration and tumor biology. For additional technical information or to discuss integration into your research, please contact Ascent Research.
