KIF21A Knockout HAP1 Polyclonal Cells represent a CRISPR/Cas9-edited polyclonal knockout cell population targeting the KIF21A gene in the near-haploid human HAP1 cell line. This loss-of-function model enables investigation of KIF21A-dependent processes without clonal selection, providing a heterogeneous pool of gene-disrupted cells for robust functional studies. The knockout was generated through CRISPR/Cas9-mediated gene disruption, creating a versatile tool for functional genomics, drug screening, and disease modeling applications where uniform gene inactivation is less critical than population-level analysis.
The HAP1 host cell line is derived from the K562 chronic myeloid leukemia line and possesses a near-haploid karyotype, making it an ideal model for genetic research. Its haploid genome simplifies loss-of-function studies by eliminating allelic complexity, allowing clearer interpretation of gene disruption effects. HAP1 cells retain essential signaling pathways and exhibit adherent, epithelial-like growth, facilitating standard cell culture, transfection, and high-content imaging assays. This background is widely used in knockout screens and mechanistic studies of cytoskeletal dynamics and cell adhesion.
KIF21A encodes a plus-end-directed kinesin motor protein that transports cargo along microtubules and regulates microtubule dynamics at focal adhesions. It interacts directly with KANK1 and talin to modulate adhesion turnover and cell migration. KIF21A functions within the integrin?CKANK1?Ctalin?CKIF21A?Cmicrotubule signaling axis, linking extracellular matrix signals to cytoskeletal remodeling. Its disruption impairs microtubule plus-end dynamics and focal adhesion disassembly, affecting processes such as cell motility and neurite outgrowth. Mutations in KIF21A cause congenital fibrosis of the extraocular muscles type 1 (CFEOM1), highlighting its critical role in neurodevelopment.
In the HAP1 background, KIF21A knockout offers a simplified genetic platform to dissect its function in microtubule-focal adhesion crosstalk. The near-haploid state enables unambiguous assessment of gene disruption on adhesion turnover, microtubule stability, and cargo delivery. This model is particularly suited for studying how loss of KIF21A alters cell migration and adhesion organization, and for screening chemical or genetic modifiers that may rescue CFEOM1-associated phenotypes. The polyclonal nature provides a cost-effective, physiologically relevant population for pathway analysis without clonal artifacts.
Researchers can employ these polyclonal knockout cells in Western blotting and immunofluorescence to confirm KIF21A protein depletion and examine microtubule architecture. Co-immunoprecipitation assays permit investigation of altered interactions with talin, KANK1, and microtubules. Live-cell imaging enables real-time analysis of microtubule dynamics and focal adhesion turnover, while migration assays reveal motility defects. These cells also serve as a platform for drug screening targeting kinesin motor function or adhesion signaling pathways. For further information or to discuss custom applications, contact Ascent Research.
