The Gsk3b Knockout BHK-21 Polyclonal Cells product provides a CRISPR/Cas9-edited polyclonal knockout cell population in which the Gsk3b gene has been disrupted through targeted gene editing. This polyclonal knockout model eliminates GSK3?? protein expression, enabling loss-of-function studies in a readily transfectable fibroblast background. The cells are derived from the Mesocricetus auratus (Syrian golden hamster) BHK-21 cell line and are supplied as a heterogeneous pool, suitable for experiments that do not require a clonal isolate.
BHK-21 cells are an adherent fibroblast line originally established from baby hamster kidney tissue, widely used in virology and cell biology. These kidney fibroblasts normally provide structural support and contribute to extracellular matrix production. Their robust growth characteristics and susceptibility to genetic manipulation make them a versatile platform for investigating signal transduction and metabolic regulation. The BHK-21 background offers a well-characterized model for studying gene function in non-transformed mesenchymal cells.
GSK3?? (glycogen synthase kinase 3 beta) is a constitutively active serine/threonine kinase that regulates multiple substrates through phosphorylation-dependent inhibition or degradation. Key upstream regulators include Akt (PKB) downstream of PI3K and insulin receptor signaling, as well as Wnt ligands that activate the Frizzled/DVL cascade. GSK3?? directly phosphorylates ??-catenin within the Axin-APC destruction complex, targeting it for proteasomal degradation; it also phosphorylates glycogen synthase to suppress glycogen synthesis. Other downstream targets include c-Myc, Cyclin D1, NFAT, and tau protein. Interacting factors such as Axin, APC, FRAT1, and DISC1 modulate GSK3?? function. Thus, GSK3?? mediates crosstalk between Wnt/??-catenin, PI3K/Akt, insulin, Hedgehog, and NF-??B pathways.
In BHK-21 fibroblasts, disruption of Gsk3b removes constitutive phosphorylation of ??-catenin, leading to its stabilization and potential activation of TCF/LEF-dependent transcription. This loss-of-function model alters the balance of cell proliferation, differentiation, and metabolic control. Given the role of kidney fibroblasts in maintaining tissue architecture and responding to growth factors, this knockout enables dissection of GSK3??-dependent processes in mesenchymal biology. The polyclonal population maintains a distribution of CRISPR-induced mutations, allowing observation of bulk phenotypes without clonal artifacts.
Researchers can employ these cells to study Wnt/??-catenin signaling dynamics using luciferase reporter assays with TCF/LEF promoters, examine ??-catenin localization by immunofluorescence, and quantify target gene expression via RT-qPCR. The knockout is also suited for metabolic flux analysis to assess alterations in glycogen metabolism and insulin signaling. Additionally, the model facilitates cell proliferation and apoptosis assays under various stimuli, making it valuable for cancer biology, diabetes research, and Alzheimer??s disease investigations. For drug discovery applications, these cells provide a genetically defined background for screening GSK3?? inhibitors or evaluating off-target effects. Please contact Ascent Research for further technical details and ordering information.
