The GSK3A Knockout HAP1 Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population designed to disrupt the GSK3A gene in the human near-haploid HAP1 cell background. This loss-of-function model enables systematic investigation of GSK3A, a constitutively active serine/threonine kinase that serves as a key node in multiple signaling pathways, including Wnt/??-catenin, insulin/PI3K/AKT, and hedgehog cascades.
HAP1 cells are an adherent, fibroblast-like human near-haploid cell line derived from the KBM-7 chronic myeloid leukemia cell line. Their near-haploid karyotype minimizes genetic redundancy, making them exceptionally well-suited for haploid genetic screens, functional genomics, and unambiguous genotype-phenotype correlation. The HAP1 background supports robust experimental manipulation, including efficient transfection and lentiviral transduction, facilitating reporter gene expression and rescue studies.
GSK3A phosphorylates critical substrates such as ??-catenin and glycogen synthase, thereby targeting them for proteasomal degradation or inactivation. Within the Wnt/??-catenin pathway, GSK3A is an integral component of the destruction complex containing AXIN1, APC, and ??-catenin. Wnt ligand stimulation inhibits GSK3A activity via Dishevelled (DVL), leading to ??-catenin stabilization and TCF/LEF-mediated transcription of target genes like MYC and CCND1. In the insulin/PI3K/AKT pathway, AKT phosphorylates GSK3A at Ser21, suppressing its kinase activity to promote glycogen synthesis. GSK3A is additionally regulated by kinases including PKA, PKC, and p90RSK, and it modulates downstream effectors such as NFAT, CREB, Tau, and STAT3, integrating diverse cellular processes from proliferation to survival.
In the near-haploid HAP1 background, disruption of GSK3A provides a clean genetic model free from allele compensation, allowing unambiguous assessment of pathway perturbations. The polyclonal knockout pool preserves population heterogeneity while uniformly impairing GSK3A function, making it ideal for bulk assays that capture integrative cellular responses. This model enables precise dissection of GSK3A??s role in ??-catenin dynamics, insulin-mediated glycogen metabolism, and cross-talk with hedgehog and NF-??B pathways.
This knockout cell product supports a broad array of experimental approaches, including Western blotting for total and phospho-GSK3A (Ser21), ??-catenin stabilization assays, TCF/LEF luciferase reporter assays, and RT-qPCR analysis of downstream targets. It is particularly valuable for functional genomics, kinase signaling research, drug target validation, and metabolic studies, with direct relevance to Alzheimer??s disease, type 2 diabetes, and cancer. The polyclonal nature facilitates population-based assays such as proliferation, apoptosis, and RNA-seq profiling. For additional information, please contact Ascent Research.
