PAPSS1 Knockout Raji Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population designed to disrupt the PAPSS1 gene in the Raji B-lymphocyte background. This polyclonal pool provides a heterogeneous knockout model, suitable for studying loss-of-function effects without clonal selection, thereby preserving genetic diversity while eliminating PAPSS1 expression across the population. The product enables robust analysis of sulfation pathways in a lymphoma-relevant context.
The Raji cell line is an EBV-positive Burkitt lymphoma-derived B-lymphocyte model, widely employed in immunology and cancer research for its capacity to study B-cell signaling, antibody production, and lymphoma biology. These suspension cells maintain key B-cell characteristics, including surface immunoglobulin expression and responsiveness to cytokine stimulation, making them a versatile host for gene-editing studies.
PAPSS1 encodes the bifunctional 3′-phosphoadenosine 5′-phosphosulfate synthase 1, which catalyzes the two-step synthesis of 3′-phosphoadenosine 5′-phosphosulfate (PAPS) from ATP and inorganic sulfate. PAPS serves as the universal sulfonate donor for all sulfotransferase (SULT) enzymes, enabling sulfation of glycosaminoglycans (heparan sulfate, chondroitin sulfate), steroids (estrone sulfate, dehydroepiandrosterone sulfate), catecholamines (dopamine sulfate), and tyrosine residues in proteins. Upstream regulators include SOX9 in chondrogenesis, hormonal stimuli, and inflammatory cytokines such as IL-1 and TNF-??. Key interacting partners are SULTs (e.g., SULT1A1, SULT2A1), ATP, and sulfate, placing PAPSS1 at the nexus of cellular sulfation metabolism.
In Raji B lymphocytes, PAPSS1-driven sulfation likely modulates cell-surface glycosaminoglycan composition, influencing adhesion, migration, and immune recognition. Dysregulated sulfation is implicated in cancer metabolism and drug resistance; thus, this knockout model facilitates dissection of sulfation-dependent pathways in B-cell lymphoma biology and therapeutic response.
The polyclonal knockout cells enable diverse studies, including investigation of sulfation in B-cell function, drug metabolism, and glycosaminoglycan biosynthesis. Compatible assays include Western blotting, RT-qPCR, PAPS quantification, sulfotransferase activity assays, glycosaminoglycan sulfation analysis, flow cytometry, cell proliferation, and drug sensitivity testing. For additional information, please contact Ascent Research.
