The ANP32B Knockout HT29 Polyclonal Cells represent a CRISPR/Cas9-edited polyclonal knockout cell population derived from the human HT29 colorectal adenocarcinoma cell line, designed for targeted disruption of the ANP32B gene. This model provides a loss-of-function system for investigating ANP32B-dependent molecular pathways in a physiologically relevant epithelial context.
The HT29 cell line originates from a primary colon adenocarcinoma in a 44-year-old female patient and is widely used as a model for studying intestinal epithelial barrier function and colorectal cancer progression. These adherent epithelial cells retain characteristics of colorectal adenocarcinoma, including dysregulated proliferation and impaired differentiation, making them a suitable host for dissecting oncogenic mechanisms.
ANP32B encodes a multifunctional histone chaperone that acts as a potent inhibitor of protein phosphatase 2A (PP2A), promoting sustained phosphorylation of oncogenic signaling effectors. It interacts with histones H2A, H2B, and H3, the SET complex, ??-catenin, and the PP2A catalytic subunit to facilitate chromatin remodeling and inhibit apoptosis. ANP32B is transcriptionally regulated by E2F1 and MYC and functions downstream of Wnt/??-catenin signaling. By enhancing ??-catenin transcriptional activity and suppressing caspase-3 cleavage, ANP32B drives the expression of pro-proliferative targets such as cyclin D1 and c-Myc, while attenuating apoptotic execution. Additional interactions with nucleoporins support its involvement in mRNA export.
In the context of colorectal cancer, ANP32B contributes to the oncogenic phenotype of HT29 cells by reinforcing chromatin accessibility at proliferation-associated genes and blunting caspase-3-mediated apoptosis. Disruption of ANP32B in this model can attenuate Wnt/??-catenin-driven transcription, reduce phospho-AKT levels, and alter the balance of apoptotic regulators, providing a direct window into tumor cell dependency on histone chaperone function and PP2A inhibition. The polyclonal nature of the knockout population preserves cellular heterogeneity, enabling more robust assessment of population-level responses compared to clonal isolates.
This product is suitable for a broad range of research applications, including mechanistic studies of chromatin remodeling, apoptosis signaling, and Wnt/??-catenin pathway regulation in colorectal cancer. Representative assays include western blotting and RT-qPCR for expression analysis, ChIP-qPCR for histone modification profiling, co-immunoprecipitation for protein interaction mapping, caspase activity and ??-catenin reporter assays, and cell proliferation or drug sensitivity screening for target validation. For additional information or to inquire about custom cell engineering services, please contact Ascent Research.
