The BICD2 Knockout HAP1 Polyclonal Cells represent a CRISPR/Cas9-edited polyclonal knockout cell population engineered to disrupt the BICD2 gene, a key dynein motor adaptor involved in microtubule-dependent transport. This polyclonal pool, derived from the HAP1 cell line, provides a versatile loss-of-function model for examining BICD2-dependent intracellular processes without requiring clonal isolation. The targeted gene disruption enables robust investigation of retrograde transport, organelle positioning, and cargo trafficking, offering a convenient system for high-throughput screening and mechanistic studies.
The host HAP1 cell line is a near-haploid human cell line originating from KBM-7 chronic myeloid leukemia cells, with a male karyotype. Its haploid genetic background simplifies knockout generation and phenotypic analysis, making it a widely adopted model in genetic studies and functional genomics. HAP1 cells retain key signaling pathways and are amenable to a variety of cellular and biochemical assays, providing a physiologically relevant context for studying gene function in a lineage-appropriate setting.
BICD2 functions as a cargo adaptor that links the cytoplasmic dynein motor complex to specific cargos through its coiled-coil domain, mediating retrograde transport along microtubules. It interacts directly with dynein heavy chain (DYNC1H1) and the dynactin complex subunit DCTN1, as well as kinesin-1 subunit KIF5B and the small GTPase RAB6A. Activated by RAB6 and cell cycle regulators, BICD2 promotes dynein-mediated translocation of organelles, including Golgi positioning, nuclear migration, and mRNA localization. Dysregulation of this network is implicated in neurodegenerative disorders such as spinal muscular atrophy, lower extremity-predominant 2 (SMALED2) and hereditary spastic paraplegia.
In the HAP1 cell context, disruption of BICD2 results in profound defects in dynein-dependent transport, impacting organelle distribution and intracellular organization. The near-haploid state reduces genetic redundancy, unmasking loss-of-function phenotypes that may be obscured in diploid systems. This clean background facilitates detailed analysis of BICD2??s role in Golgi morphology, nuclear positioning, and cargo dynamics, making the polyclonal knockout cells an ideal platform for studying motor adaptor protein biology and disease-related transport defects.
This polyclonal BICD2 knockout model supports diverse research applications, including immunofluorescence-based assays of Golgi and nuclear positioning, western blotting for BICD2 and its interacting partners (e.g., DYNC1H1, DCTN1), co-immunoprecipitation to probe protein complexes, live-cell imaging of cargo transport, and RT-qPCR analysis of downstream target genes. It is particularly suited for modeling SMALED2 and hereditary spastic paraplegia, as well as high-throughput drug screening for agents that modulate intracellular trafficking. For further information or custom inquiries, please contact Ascent Research.
