The ACP1 Knockout HT29 Polyclonal Cells constitute a CRISPR/Cas9-edited polyclonal knockout cell population derived from the HT29 human colorectal adenocarcinoma cell line, designed to disrupt the ACP1 gene encoding a low-molecular-weight protein tyrosine phosphatase. This loss-of-function model provides a robust tool for dissecting tyrosine phosphorylation-mediated signaling networks without relying on clonal selection.
HT29 is a broadly utilized epithelial cell line established from a primary colorectal adenocarcinoma. It exhibits intestinal epithelial characteristics and is extensively employed in studies of colon cancer biology, drug absorption, and barrier function. The cell line??s well-defined growth properties and genetic background make it an ideal host for investigating oncogenic signaling perturbations.
ACP1 functions as a protein tyrosine phosphatase that dephosphorylates key signaling intermediates, including the EphA2 receptor, focal adhesion kinase (FAK), STAT5, and the platelet-derived growth factor receptor (PDGFR). Its activity is regulated by upstream stimuli such as epidermal growth factor (EGF), insulin, and cytokines, positioning ACP1 as a negative regulator of major signaling cascades. Through dephosphorylation of these targets, ACP1 modulates downstream pathways including PI3K/AKT, MAPK, and JAK/STAT, thereby influencing cell proliferation, differentiation, and immune responses.
In the context of HT29 colorectal cancer cells, ACP1 knockout is anticipated to result in hyperphosphorylation of its substrates, leading to sustained activation of oncogenic signaling axes. For instance, elevated phosphorylation of EphA2 and FAK may enhance cell migration and invasion, while altered STAT5 phosphorylation could impact survival and immune modulation. The polyclonal knockout population captures the heterogeneity of loss-of-function effects, avoiding biases introduced by single-cell cloning and providing a more physiologically relevant model for studying colorectal cancer progression and immune evasion.
These polyclonal knockout cells are suited for a wide range of experimental applications, including western blotting to assess phospho-tyrosine levels, RT-qPCR for downstream gene expression analysis, proliferation assays such as MTT and BrdU, flow cytometry for cell cycle profiling, and immunoprecipitation of phosphorylated targets. Additionally, migration and invasion assays can be employed to evaluate metastatic potential. Researchers can leverage this model to investigate colon cancer proliferation mechanisms, drug response screening, and the role of tyrosine phosphatases in immune escape. For further information, please contact Ascent Research.
