The MORC4 Knockout Raji Polyclonal Cells represent a CRISPR/Cas9-edited polyclonal knockout cell population derived from the Raji B lymphocyte cell line. This product provides a loss-of-function model for the MORC4 gene, enabling functional studies of MORC4 in a human B-cell lymphoma background. The polyclonal population contains a heterogeneous mixture of edited cells, reflecting the complexity of CRISPR-mediated gene disruption without single-cell cloning.
The Raji host cell line originates from an EBV-positive Burkitt’s lymphoma patient and exhibits a suspension lymphoblastoid morphology. Raji cells are widely used as a model for B-cell malignancies and humoral immunity, retaining key features of antibody-producing B lymphocytes. Their transformed phenotype and active immunoglobulin expression make them a relevant system for investigating oncogenic mechanisms and therapeutic targets in hematological cancers.
MORC4 (MORC family CW-type zinc finger 4) is a chromatin-associated protein that localizes to heterochromatin and mediates transcriptional repression through recruitment of histone deacetylases HDAC1 and HDAC2, interacting with HP1?? and chromatin. MORC4 functions downstream of DNA damage response signaling, activated by ATM/ATR kinases, and promotes the formation of H3K9me3-modified heterochromatin at damage sites. In the knockout model, disruption of MORC4 abrogates its repressive function, leading to derepression of downstream targets involved in DNA repair, cell cycle regulation, and apoptosis, such as ??H2AX and other DNA damage-responsive genes. MORC4 is also subject to regulation by HDAC inhibitors and cellular stress signals, linking chromatin modification to transcriptional control. This mechanistic network positions MORC4 as a node integrating epigenetic silencing with genome stability maintenance.
In the context of Raji cells, MORC4 knockout has particular significance for B-cell lymphoma biology. Aberrant chromatin remodeling and transcriptional repression are hallmarks of lymphomagenesis, and MORC4’s role in heterochromatin formation and gene silencing is implicated in the pathogenesis of Burkitt’s lymphoma and other B-cell lymphomas. The loss of MORC4 in this EBV-positive background may reveal synthetic lethal vulnerabilities or alter the DNA damage response threshold, providing a platform to dissect epigenetic dependencies in hematological malignancies. This model recapitulates the genetic landscape of lymphoma cells while allowing precise evaluation of MORC4-driven pathways.
Researchers can employ these polyclonal knockout cells in a range of applications, including molecular characterization of MORC4 via Western blotting, RT-qPCR, and RNA-seq, as well as chromatin occupancy analysis by ChIP-qPCR. Functional assays such as flow cytometry for cell cycle and apoptosis, viability assays, and ??H2AX-based DNA damage assessments are highly compatible. Co-immunoprecipitation enables study of MORC4 interactions with HDAC1/2 and HP1??. This product is suitable for synthetic lethal screens, drug target validation, and mechanistic studies of chromatin regulation in lymphoma. For additional details or customized services, please contact Ascent Research.
