The AGK Knockout HEK293T Polyclonal Cells product comprises a population of HEK293T cells that have undergone CRISPR/Cas9-mediated disruption of the AGK gene. This polyclonal knockout cell population provides a loss-of-function model for studying AGK-dependent processes, without isolating a monoclonal cell line. The resulting cellular pool allows researchers to investigate the collective effects of AGK ablation in a heterogeneous, but enriched, knockout background. This format is particularly useful for initial phenotypic screens and functional genomics studies where clonal variability is not the primary concern.
The host cell line, HEK293T, is a widely used human embryonic kidney epithelial cell derivative that constitutively expresses the SV40 large T antigen. This antigen facilitates episomal replication of plasmids containing the SV40 origin of replication, enabling high-level transient protein expression. Cells grow adherently and require serum supplementation. The HEK293T background is favored for transfection-based assays, protein production, and signaling pathway dissection, making it an ideal chassis for knockout studies that interrogate lipid kinase functions and mitochondrial biology.
AGK encodes a lipid kinase that catalyzes the phosphorylation of monoacylglycerol and diacylglycerol to generate lysophosphatidic acid (LPA) and phosphatidic acid (PA), respectively. These bioactive lipids serve as signaling molecules and membrane precursors, with LPA activating G-protein-coupled receptors and PA contributing to mTORC1 activation. Downstream, mTOR signaling influences pathways such as S6 kinase phosphorylation and mitochondrial transcription factor A (TFAM) expression. AGK is regulated upstream by PPAR?? and insulin signaling, and it interacts with mitochondrial protein complexes including ATP synthase, linking lipid metabolism to mitochondrial DNA maintenance and energy homeostasis. Under metabolic stress, AGK function becomes critical, and its loss disrupts glycerolipid metabolism and mitochondrial integrity.
In the HEK293T context, AGK knockout offers a simplified model to dissect the intersection between lipid signaling and mitochondrial function without the complications of tissue-specific factors. The polyclonal nature of the product allows observation of a range of indel mutations, potentially revealing variability in cellular responses. Given the well-characterized signaling networks in HEK293T cells, researchers can directly probe how AGK ablation affects mTORC1 activity, LPA/PA levels, and mitochondrial respiration. This model is particularly suited for studying Sengers syndrome-related defects, as AGK mutations in patients lead to congenital cataracts, hypertrophic cardiomyopathy, and mitochondrial myopathy, phenotypes that can be partially recapitulated by metabolic profiling and imaging in these cells.
Research applications include western blotting and RT-qPCR to confirm AGK knockout, lipid kinase activity assays using radiolabeled substrates, and LC-MS/MS quantification of LPA and PA. Mitochondrial function can be assessed by Seahorse metabolic flux analysis, mitochondrial membrane potential flow cytometry, and immunofluorescence for mitochondrial morphology. The polyclonal population is also applicable for mTOR signaling phospho-protein analyses, cell proliferation and apoptosis assays, and drug target validation in metabolic disease. Furthermore, these cells enable studies of crosstalk between glycerolipid metabolism and the mTOR pathway. For additional technical information or customization options, please contact Ascent Research.
