The FYTTD1 Knockout Raji Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population that disrupts the endogenous FYTTD1 gene in the human Raji B-lymphocyte cell line. This gene-edited pool provides a heterogeneous loss-of-function model for studying FYTTD1-dependent processes without the need for clonal isolation. The polyclonal format preserves biological variability and enables robust population-level analyses of mRNA export and gene regulation.
The Raji host cell line is a well-characterized lymphoblastoid model originally isolated from a Burkitt??s lymphoma patient. Raji cells exhibit B-cell lineage features and are widely used to investigate adaptive immunity, antibody production, and the molecular pathogenesis of B-cell lymphomas. Their concurrent expression of surface immunoglobulins and Epstein-Barr virus antigens makes them a versatile platform for functional genomics and immuno-oncology research.
FYTTD1 (also known as UIF) is an essential mRNA export adaptor that couples transcription to efficient nuclear export of mature mRNAs. Mechanistically, FYTTD1 binds polyadenylated transcripts and interacts with the spliceosome-associated factor UAP56 (DDX39B), a core component of the TREX complex. This interaction facilitates the balanced recruitment of the NXF1:NXT1 (p15) export receptor, promoting remodeling of messenger ribonucleoprotein complexes and translocation through the nuclear pore. Upstream regulators include RNA polymerase II transcription and UAP56, while downstream events involve NXF1 recruitment and cytoplasmic delivery. FYTTD1 also collaborates with ALYREF (THOC4) and the THO complex, integrating transcription, 3??-end processing, and mRNA transport.
In the Raji B-cell background, disruption of FYTTD1 is anticipated to impair the export of transcripts critical for lymphocyte growth, survival, and differentiation. Because B-cell malignancies like Burkitt??s lymphoma are characterized by high transcriptional output and rapid proliferation, the knockout model helps uncover how mRNA export fidelity impacts oncogenic signaling. The polyclonal cells enable studies of heterogeneous cellular responses and allow assessment of compensatory pathways that may emerge in a genetically mixed population.
These FYTTD1 knockout cells are suitable for a broad array of functional genomics applications, including quantitative analysis of mRNA export dynamics via RNA sequencing, subcellular localization profiling of RNA-binding proteins by immunofluorescence, and examination of TREX complex integrity through co-immunoprecipitation. Researchers can further explore proliferation, apoptosis, and cell cycle perturbations using flow cytometry, or validate target protein loss by Western blotting. The model serves as a valuable tool for dissecting post-transcriptional control mechanisms in lymphomas and for screening modulators of the mRNA export pathway. For product inquiries or technical support, please contact Ascent Research.
