The IKBKG Knockout HAP1 Polyclonal Cells provide a CRISPR/Cas9-edited polyclonal knockout cell population in which the IKBKG gene has been disrupted across the HAP1 cell pool, resulting in a heterogeneous loss-of-function model. This format facilitates rigorous, population-level investigations of IKBKG-dependent signaling events while avoiding the clonal artifacts associated with single-cell-derived lines.
The host cell system is the near-haploid HAP1 cell line, originally derived from the KBM-7 chronic myeloid leukemia background. These cells are adherent, exhibit fibroblast-like morphology, and carry the BCR-ABL1 fusion gene characteristic of their leukemic origin. Notably, HAP1 cells lack HLA class I expression, which reduces immune effector interactions and makes them a simplified genetic background for knockout screens. Their near-haploid karyotype facilitates unequivocal gene disruption, as only a single allele needs to be edited to ablate protein function, enhancing the utility of this model for high-throughput genetic studies and pathway dissection.
IKBKG, known as NEMO, is the regulatory subunit of the IKK complex, which also contains the kinases IKK-?? and IKK-??. Upstream signals from TNF-??, IL-1??, Toll-like receptors, and antigen receptors converge on IKBKG through adaptors such as TRAF2, RIP1, and TAK1/TAB2/3. Activated IKBKG then enables the IKK complex to phosphorylate I??B??, leading to its ubiquitination and degradation. This event releases NF-??B (p65/p50) to enter the nucleus and induce transcription of target genes, including pro-inflammatory cytokines (TNF, IL-6), anti-apoptotic factors (Bcl-xL, XIAP), and cell adhesion molecules (ICAM-1). Consequently, IKBKG functions as a crucial signaling hub for NF-??B-mediated responses to immune and stress stimuli.
Disruption of IKBKG in HAP1 cells creates a valuable model for studying NF-??B pathway dependency in a human genetic background. Loss of NEMO is expected to abrogate IKK activity, stabilize I??B??, and prevent NF-??B nuclear translocation, thereby inhibiting the expression of key immune and survival genes. This phenotype renders cells more susceptible to apoptosis and unable to mount proper inflammatory responses. The model is particularly relevant for research on immunodeficiencies, such as hypohidrotic ectodermal dysplasia with immunodeficiency, and inflammatory disorders, providing a clean genetic system for functional interrogation.
This polyclonal knockout population is suitable for detailed dissection of NF-??B signaling cascades, screening of IKK inhibitors, and modeling of immunodeficiency-related pathologies. Compatible assays include western blot analysis of I??B?? turnover, RT-qPCR for NF-??B target genes, luciferase reporter assays, immunofluorescence for p65 localization, and ELISA measurement of cytokine secretion. Co-immunoprecipitation can further probe IKK complex integrity. These applications make the product an essential tool for both basic research and drug discovery. For additional details, please contact Ascent Research.
