The ALPP Knockout Jurkat Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population derived from the Jurkat human T lymphocyte line. Generated via CRISPR/Cas9-mediated disruption of the ALPP gene, this product consists of a heterogeneous pool of cells with altered placental alkaline phosphatase expression. As a polyclonal population, these cells are not clonally derived and may exhibit varied knockout efficiencies; they are ideal for studying population-level effects without clonal selection bias.
Jurkat cells, an immortalized human T lymphocyte line derived from a patient with acute T cell leukemia, are extensively employed to model T-cell activation, signal transduction, apoptosis, and cytokine production. They express key T-cell surface markers and signaling machinery, including the TCR complex, CD3, and CD4. Their well-characterized signaling cascades make them particularly useful for investigating how metabolic perturbations may intersect with immune signaling pathways.
ALPP encodes placental alkaline phosphatase, a GPI-anchored homodimeric enzyme that hydrolyzes phosphate monoesters. It dephosphorylates substrates like folate monophosphate and phosphoethanolamine, facilitating cellular uptake and phosphate recycling. Transcriptional regulation involves OCT4, NANOG, retinoic acid, and estrogen; downstream metabolites include folate monophosphate, phosphoethanolamine, and inorganic phosphate. ALPP localizes to lipid rafts and interacts with GPI anchor components. Key pathway components include folate, folate receptor alpha, phosphate transporters, and GPI transamidase. Disruption of ALPP impairs dephosphorylation-dependent folate internalization and phosphate metabolism.
The ALPP knockout in Jurkat cells abolishes phosphatase activity, enabling investigation of how loss of phosphate hydrolysis and folate uptake impacts T-cell metabolism and signaling. This model is particularly relevant for understanding how perturbations in folate metabolism, essential for nucleotide synthesis and methylation, affect T-cell proliferation and activation. Additionally, ALPP??s association with lipid rafts suggests potential crosstalk with TCR signaling platforms, offering a tool to explore interactions between metabolic enzymes and immune signal transduction.
Applications include placental alkaline phosphatase functional studies, germ cell tumor biomarker research, and folate metabolism analysis. This model supports inhibitor screening, GPI anchor biosynthesis investigation, and substrate identification. Representative assays are Western blotting, RT-qPCR, alkaline phosphatase enzymatic assays, flow cytometry, RNA-seq, folate uptake measurements, and phosphate release assays. Contact Ascent Research for more information.
