The IPMK Knockout HEK293T Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population that provides a loss-of-function model for the IPMK gene. This product consists of a pool of HEK293T cells with heterogeneous gene disruptions, enabling functional genomic studies without clonal selection biases. IPMK encodes an inositol phosphate kinase central to multiple signaling pathways, and its disruption in this polyclonal format offers a versatile tool for dissecting inositol phosphate metabolism and its downstream effects.
The host HEK293T line is a human embryonic kidney epithelial cell line transformed with adenovirus 5 DNA and stably expressing the SV40 large T antigen. Widely used for protein expression and viral vector production, HEK293T cells feature high transfection efficiency and well-characterized growth properties, making them a robust platform for CRISPR/Cas9-edited models and downstream functional assays.
IPMK acts as a critical inositol phosphate kinase that phosphorylates IP3 to produce IP4 and IP5, directly linking the phosphatidylinositol signaling system to the PI3K-Akt pathway. This enzyme also has both cytoplasmic and nuclear functions, interacting with nuclear pore complex proteins and the ALY/REF export factor to facilitate mRNA export, and with transcriptional regulators such as p53 to influence gene expression. Upstream, IPMK activity is regulated by p53 and by PLC-generated IP3 downstream of receptors like EGFR and PDGFR, while downstream effects include Akt activation and modulation of p53 transcriptional targets. Key interacting partners include TRAF2, CK2, and PEPCK1, which modulate its stability and function. In the knockout cells, disruption of IPMK impairs PIP3/Akt signaling, nuclear mRNA export, and p53-dependent transcriptional responses, highlighting its integrative role in cellular homeostasis.
Within HEK293T cells, IPMK knockout disrupts inositol phosphate metabolic flux and attenuates Akt phosphorylation, providing a clean system to study PI3K/Akt pathway regulation and its cross-talk with nuclear events. The polyclonal population mirrors the genetic heterogeneity of typical cell cultures, reducing artifacts from single-cell cloning while maintaining the cell line’s ease of manipulation and assay compatibility. This model is therefore well-suited for biochemical, imaging, and genetic assays requiring a physiologically relevant signaling context.
Research applications include phospho-Akt western blotting, inositol phosphate profiling via mass spectrometry, poly(A) RNA FISH, and p53 luciferase reporter assays to examine signaling dynamics and gene regulation. These cells also support functional studies such as proliferation and apoptosis assays, drug target validation in cancer and metabolic disorders, and investigation of nuclear mRNA export mechanisms. For further information, please contact Ascent Research.
