The DISC1 Knockout HAP1 Polyclonal Cells represent a CRISPR/Cas9-edited polyclonal knockout cell population, generated by targeted disruption of the DISC1 gene in HAP1 cells. This loss-of-function model enables researchers to interrogate DISC1-dependent signaling networks and cellular processes relevant to neurodevelopment and psychiatric disorders. The polyclonal format provides a heterogeneous population with diverse knockout alleles, facilitating robust and reproducible functional analyses without the need for single-cell cloning.
The HAP1 cell line is a near-haploid human chronic myeloid leukemia cell line, originally derived from the KBM-7 line. Characterized by a stable near-haploid karyotype, HAP1 cells offer a greatly simplified genetic background that enhances the efficiency of CRISPR/Cas9-mediated gene editing and reduces confounding genetic complexity. Widely adopted as a genetic perturbation model system, HAP1 is particularly valuable for knockout and protein interaction studies, providing a clean platform to dissect human gene function.
DISC1 encodes a multifunctional scaffold protein that orchestrates neurodevelopmental events, including neuronal migration, neurite outgrowth, and synaptic plasticity, by assembling and coordinating multiple signaling complexes. DISC1 is regulated upstream by GSK3??-mediated phosphorylation, PDE4B-dependent cAMP modulation, and ATF4 transcriptional control. It nucleates key complexes such as DISC1-NDEL1-LIS1 for neuronal migration, DISC1-PDE4B for cAMP hydrolysis, DISC1-GSK3??-FEZ1 for Wnt signaling and neurite outgrowth, and DISC1-ATF4 for transcriptional regulation. Downstream targets include NDEL1, LIS1, PDE4B, GSK3??, and FEZ1. Interacting partners include NDEL1, LIS1, PDE4B, GSK3??, FEZ1, TRAF3IP1, ATF4, and MACF1. This molecular network integrates pathways such as cAMP, Wnt, and neurotrophin signaling, with DISC1 acting as a central node linking extracellular cues to cytoskeletal dynamics and gene expression.
Disruption of DISC1 in the HAP1 cellular context removes this scaffolding hub, resulting in defective assembly of multiprotein complexes and aberrant downstream signaling. This model provides a genetically defined system to dissect the biochemical consequences of DISC1 loss in the absence of neuron-specific variables. The near-haploid nature of HAP1 ensures that knockout alleles are not masked by a second functional copy, enabling a clear loss-of-function phenotype. This is particularly advantageous for studying phosphorylation-dependent signaling cascades, such as those involving GSK3?? and PDE4B, and for directly assessing DISC1??s role in regulating transcriptional outputs via ATF4.
This cell product is suitable for a range of advanced research applications, including modeling signaling deficiencies associated with schizophrenia, bipolar disorder, major depressive disorder, and autism spectrum disorder. It supports high-throughput drug screening aimed at identifying compounds that modulate DISC1-related pathways, as well as proteomic studies to map DISC1 interaction networks. Representative assays include co-immunoprecipitation to examine complex formation, western blotting and RT-qPCR to verify knockout and quantitate downstream effectors, immunofluorescence for subcellular localization, cAMP activity assays to monitor PDE4B function, phospho-specific signaling analysis for GSK3??, and reporter gene assays to evaluate ATF4-mediated transcription. These approaches enable systematic dissection of disease-relevant signaling mechanisms. For additional information, please contact Ascent Research.
