The DIXDC1 Knockout K-562 Polyclonal Cells product comprises a CRISPR/Cas9-edited polyclonal knockout population in the K-562 human chronic myelogenous leukemia (CML) cell line, designed for loss-of-function studies of the DIXDC1 gene. This polyclonal knockout model is generated via targeted gene disruption, yielding a heterogeneous pool of cells with DIXDC1 alterations, enabling robust functional analysis without clonal selection. The product provides a versatile tool for investigating DIXDC1 biology in a hematopoietic context.
The K-562 host cell line was established from the pleural effusion of a 53-year-old female with CML in blast crisis and is characterized by the Philadelphia chromosome (BCR-ABL1 translocation). K-562 cells serve as a widely recognized model for hematopoietic differentiation, leukemia biology, and BCR-ABL1-driven signal transduction. The cell line’s robust growth characteristics and well-defined signaling pathways make it an ideal background for interrogating gene function in CML and broader hematological research.
DIXDC1 encodes a scaffold protein that positively regulates canonical Wnt/??-catenin signaling by bridging Dishevelled (DVL2) and AXIN1, thereby stabilizing CTNNB1 (??-catenin) and facilitating its nuclear accumulation and TCF/LEF-mediated transcription. DIXDC1 is phosphorylated by CDK5, linking it to neuronal development, and is modulated by upstream Wnt3a, GSK3??, and MAPK/ERK signals. Downstream, DIXDC1 promotes expression of MYC, CCND1, and AXIN2 via ??-catenin/TCF transcriptional activity and influences mTOR/S6K signaling, highlighting its role in integrating Wnt and mTOR pathways. DIXDC1 also interacts with DISC1, contributing to cytoskeletal remodeling and neuronal function.
In the K-562 leukemia cell context, disruption of DIXDC1 allows dissection of Wnt/??-catenin and mTOR signaling crosstalk, critical for hematopoietic proliferation and differentiation. DIXDC1 has been implicated in colorectal and gastric cancers, as well as neuropsychiatric disorders such as autism spectrum disorder and schizophrenia. Although K-562 is a hematopoietic lineage, the conserved nature of Wnt signaling permits extrapolation to neuronal models, and the knockout cells offer a unique platform for studying DIXDC1-associated pathologies. The polyclonal format mimics heterogeneous tumor populations, enhancing translational relevance for drug screening studies.
Typical research applications include functional investigation of DIXDC1 in Wnt-driven leukemogenesis, high-throughput drug screening for Wnt/??-catenin pathway inhibitors, and analysis of mTOR signaling interplay. Researchers can employ assays such as western blotting to assess protein levels, RT-qPCR for gene expression, TOP/FOP flash reporter assays for ??-catenin/TCF activity, co-immunoprecipitation to examine protein complexes, and flow cytometry for cellular proliferation and apoptosis. The DIXDC1 Knockout K-562 Polyclonal Cells thus provide a powerful experimental system for both basic signal transduction research and translational oncology. For further technical information, please contact Ascent Research.
