The DSG2 Knockout K-562 Polyclonal Cells represent a CRISPR/Cas9-edited polyclonal knockout cell population designed to disrupt the DSG2 gene, which encodes the desmosomal cadherin desmoglein-2. This loss-of-function model allows researchers to interrogate DSG2 function in a hematopoietic background that lacks classical desmosomes. The polyclonal nature ensures a diverse representation of editing events, providing robust population-level analyses.
The K-562 host cell line is an extensively characterized human erythroleukemia line established from a chronic myeloid leukemia patient in blast crisis. It harbors the BCR-ABL1 fusion oncogene and exhibits pluripotent differentiation potential, making it a versatile model for myeloid leukemia and hematopoietic biology. K-562 cells grow in suspension and do not form endogenous desmosomes, offering a clean system for investigating adhesion-independent roles of DSG2.
Desmoglein-2 is a calcium-dependent cell adhesion protein that, in epithelial and cardiac tissues, assembles into desmosomes by interacting with plakoglobin (JUP), plakophilin-2 (PKP2), and desmoplakin (DSP), thereby anchoring intermediate filaments. DSG2 function is regulated upstream by Wnt/??-catenin signaling, mechanical stress, and calcium concentration. In K-562 cells, where classical desmosomes are absent, DSG2 may participate in non-canonical signaling pathways, potentially influencing processes such as cell migration or proliferation downstream of BCR-ABL1. Disruption of DSG2 in this polyclonal knockout pool eliminates potential signaling complexes, enabling detailed dissection of its adhesion-independent molecular contributions.
This knockout model is particularly valuable for exploring DSG2 functions in a leukemia context, where its roles remain largely uncharacterized. Although DSG2 mutations are linked to arrhythmogenic right ventricular cardiomyopathy and palmoplantar keratoderma, its potential involvement in hematopoietic malignancies??including effects on differentiation, survival, or metastasis??can now be investigated. K-562 cells can be induced to aggregate or migrate, permitting assessment of DSG2-mediated cell-cell interactions and motility in a hematopoietic setting.
Researchers can utilize this DSG2 knockout polyclonal K-562 population for a range of experimental applications, including knockout validation by western blotting and RT-qPCR, cell aggregation and migration/invasion assays, and phospho-signaling analysis to monitor downstream targets such as JUP and PKP2. The model is well-suited for drug screening campaigns targeting desmosome-related signaling or for testing compounds that modulate leukemia cell behavior. Flow cytometry enables quantitative assessment of adhesion molecule and signaling changes. For additional information, please contact Ascent Research.
