The HIPK2 Knockout HEK293T Polyclonal Cells represent a CRISPR/Cas9-mediated gene disruption of the HIPK2 locus in a polyclonal HEK293T cell population. This loss-of-function model eliminates HIPK2-dependent signaling while preserving the host cell line??s robust growth, high transfection efficiency, and protein expression capacity. The polyclonal pool contains a heterogeneous mixture of knockout alleles, reducing the risk of clonal bias and enabling reliable interpretation of functional studies in a bulk population context.
HEK293T cells are a widely used human embryonic kidney epithelial cell line derived from the HEK293 lineage and stably expressing the SV40 large T antigen. This antigen enhances episomal replication of plasmids containing the SV40 origin, yielding high protein expression and efficient virus production. Their epithelial morphology and ease of culture, combined with exceptional transfectability, make HEK293T cells a premier host for gene editing, protein expression, and signal transduction studies. The parental line??s well-characterized biology provides a consistent background for interpreting knockout phenotypes.
HIPK2 is a stress-activated serine/threonine kinase that integrates signals from DNA damage, TGF-??, and Wnt pathways. It phosphorylates p53 on Ser46 to drive apoptosis, and phosphorylates Smad3 in the linker region to modulate TGF-?? transcriptional responses. HIPK2 also promotes degradation of the corepressor CtBP1 and stabilizes Axin, thus linking it to both pro-apoptotic and Wnt-suppressive functions. Key interacting partners include PML, Daxx, and c-Jun, which help localize or modulate its activity within subnuclear compartments.
In HEK293T cells, HIPK2 knockout removes a critical hub connecting stress stimuli to apoptotic and transcriptional programs. These polyclonal knockout cells enable dissection of HIPK2-specific signaling events without endogenous kinase interference. The system is especially useful for studying p53 phosphorylation at Ser46, a labile modification central to DNA damage-induced apoptosis. Moreover, HEK293T cells facilitate ectopic expression of wild-type or mutant HIPK2 constructs for structure-function and substrate validation studies in a human epithelial context.
Typical applications include western blotting for phospho-p53 (Ser46), dual-luciferase TGF-??/Smad reporter assays, co-immunoprecipitation of HIPK2-containing complexes, and Annexin V apoptosis assays. These cells support research into cancer cell signaling, neurodegenerative diseases, and fibrosis by enabling precise dissection of HIPK2??s role in p53 activation, TGF-?? responses, and Wnt regulation. For further details, please contact Ascent Research.
