The BMP2K Knockout HT29 Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population derived from the human HT29 colorectal adenocarcinoma cell line. This product features targeted disruption of the BMP2K gene, which encodes a serine/threonine kinase involved in clathrin-mediated endocytosis and BMP signaling. The polyclonal nature of the knockout pool preserves the heterogeneous genetic background of the parental HT29 line while abolishing BMP2K function, enabling robust functional studies without the need for clonal isolation.
HT29 cells are of human colorectal adenocarcinoma origin, displaying epithelial morphology and adherent growth. As a widely used model in colorectal cancer research, this cell line exhibits characteristic features of intestinal epithelial cells, including the capacity for differentiation and responsiveness to various growth factors. The established HT29 background provides a physiologically relevant context for investigating oncogenic signaling pathways and endocytic trafficking mechanisms in colorectal cancer.
BMP2K functions as a key regulator of clathrin-mediated endocytosis by phosphorylating the ??2 subunit (AP2M1) of the AP-2 adaptor complex, thereby modulating cargo selection and vesicle formation. Upstream regulators include the cytokines BMP2 and BMP4, as well as the CDK1-cyclin B complex during mitosis. Downstream, BMP2K-mediated phosphorylation of AP2M1 influences the recruitment of clathrin heavy chain and the endocytic adaptor Numb, with additional interactions involving HIP1R. This kinase also intersects with bone morphogenetic protein (BMP) signaling, potentially through the trafficking of BMP receptors and subsequent modulation of Smad-dependent transcription. Thus, BMP2K sits at a critical node between endocytic machinery and developmental signaling pathways.
In the HT29 colorectal cancer context, loss of BMP2K disrupts the regulated endocytosis of cell surface receptors, including BMP receptors, which can alter downstream BMP/Smad signaling and cellular behaviors such as proliferation and migration. Given the role of BMP signaling in intestinal epithelial homeostasis and tumorigenesis, this knockout model enables dissection of how endocytic trafficking dysregulation contributes to colorectal cancer pathology. Moreover, the interaction of BMP2K with mitotic regulators suggests potential impacts on cell division, making this a versatile tool for exploring both interphase and mitotic roles of endocytosis in transformed epithelial cells.
This polyclonal knockout population is suitable for a range of research applications, including the analysis of clathrin-mediated endocytosis, BMP signaling modulation, and receptor trafficking. Researchers can employ assays such as Western blotting and RT-qPCR to confirm BMP2K disruption and assess downstream targets (e.g., AP2M1), immunofluorescence to visualize AP2M1 localization, transferrin uptake assays to measure endocytosis efficiency, flow cytometry for surface BMP receptor abundance, and functional tests like scratch wound migration or MTT proliferation assays. Additionally, the model supports transcriptomic profiling via RNA-seq to globally characterize pathway alterations. For detailed information and ordering, contact Ascent Research.
