The ANKRD28 Knockout HeLa Polyclonal Cells represent a CRISPR/Cas9-edited polyclonal knockout cell population designed for disruption of the ANKRD28 gene in a widely used human cervical epithelial adenocarcinoma line. This loss-of-function model provides a versatile platform for investigating the functional roles of the ANKRD28 regulatory subunit of protein phosphatase 6 (PP6). The polyclonal nature of these knockout cells ensures genetic heterogeneity, avoiding clonal artifacts and enabling robust population-level studies of gene function in cancer-relevant contexts.
The host cell line, HeLa, is derived from a human cervical adenocarcinoma and is immortalized with HPV-18 integration. These cells exhibit adherent epithelial morphology and are extensively characterized in cancer research, offering reliable growth kinetics and established protocols for protein expression, signal transduction, and cytotoxic assays. Their genetic background retains key oncogenic drivers, making them particularly suitable for dissecting signaling pathways that intersect with viral oncoproteins and cellular transformation.
ANKRD28 encodes a scaffold subunit of the PP6 holoenzyme that, together with PPP6C, ANKRD44, and ANKRD52, forms a complex activated by upstream kinases CDK1 and PLK1. This phosphatase module dephosphorylates critical substrates including AURKA, NCAPD2, PRKDC, and ATM, thereby coordinating mitotic exit, DNA damage checkpoint recovery, and genome stability. Additionally, ANKRD28 interacts with 14-3-3 proteins at focal adhesions, linking PP6 activity to cytoskeletal reorganization and cell migration. Disruption of ANKRD28 thus impairs multiple PP6-dependent signaling nodes.
In HeLa cells, which harbor active PP6 signaling and HPV-18-driven proliferative programs, ANKRD28 knockout provides a physiologically relevant model to study how PP6 regulatory subunits influence cancer cell phenotypes. This system is particularly valuable for examining the crosstalk between DNA damage repair pathways and mitotic fidelity in a cervical adenocarcinoma context. The transformed nature of HeLa cells amplifies the observable consequences of ANKRD28 loss on proliferation, migration, and stress responses.
Researchers can utilize these knockout cells in Western blotting to monitor changes in AURKA phosphorylation, immunofluorescence to visualize mitotic spindle abnormalities, and gamma-H2AX staining to assess DNA damage accumulation. Co-immunoprecipitation experiments can probe altered PPP6C complex formation, while migration assays provide insight into focal adhesion dynamics. These applications make the cells a powerful tool for mechanistic studies in cancer cell biology, DNA damage response, and PP6-related signaling. For further information, please contact Ascent Research.
