The HMGB3 Knockout HEK293T Polyclonal Cells provide a rigorously developed loss-of-function model generated through CRISPR/Cas9-mediated gene disruption in the widely utilized HEK293T human embryonic kidney cell line. This polyclonal knockout population, rather than a clonal isolate, captures a broad representation of edited genotypes, enabling robust assessment of HMGB3-dependent phenotypes while avoiding artifacts associated with single-cell cloning. The cells are supplied as a heterogeneous population, directly applicable to functional genomics, signaling studies, and advanced drug discovery workflows.
HEK293T cells serve as an ideal host for this knockout model, owing to their immortalized nature and stable expression of the SV40 large T antigen, which drives episomal plasmid replication and significantly boosts recombinant protein output. Originating from human embryonic kidney epithelial cells, HEK293T has become a cornerstone in cell biology for transient and stable protein expression, lentiviral and retroviral vector production, and CRISPR-based genome engineering. Its robust growth characteristics, ease of transfection, and well-mapped transcriptional landscape make it particularly suitable for dissecting gene regulatory mechanisms disrupted by HMGB3 ablation.
HMGB3 encodes a non-histone chromosomal high-mobility group protein that binds DNA with relaxed sequence specificity, facilitating nucleosome sliding and chromatin remodeling to regulate transcription. It functions within a nexus of developmental and oncogenic pathways, including Wnt/??-catenin, TGF-??, and Hippo/YAP signaling. Upstream, HMGB3 expression is governed by pluripotency transcription factors SOX2, NANOG, and OCT4, as well as by Wnt effectors such as ??-catenin and TCF4, and by YAP/TAZ from the Hippo cascade. In turn, HMGB3 modulates downstream targets like CCND1, MYC, MMP9, and VEGF, thereby controlling cell cycle progression, migration, and epithelial-mesenchymal transition (EMT). It also physically interacts with chromatin proteins HMGB1 and HMGB2, the damage sensor p53, and immune receptors RAGE and TLR4, linking chromatin dynamics to inflammation and stress responses.
Introducing HMGB3 knockout into the HEK293T background creates a powerful system to interrogate these multilayered interactions. Disruption of HMGB3 is expected to alter transcriptional programs dependent on Wnt3a/LRP5/6/??-catenin/TCF4 and TGF-??1/TGFBR2/SMAD2/3 axes, while also impacting Hippo-mediated YAP/TAZ activity. This model, therefore, enables precise dissection of how HMGB3 coordinates gene expression networks that govern proliferation, apoptosis, and cytoskeletal reorganization. Since HEK293T cells share core signaling modules with many cancer types, including glioblastoma, breast cancer, and leukemia, findings in this knockout system can be translated to disease-relevant contexts.
Research applications are diverse and technically supported by standard assays: Western blotting confirms HMGB3 protein loss; RT-qPCR and RNA-seq reveal transcriptome-wide consequences; ChIP-qPCR maps altered chromatin binding at target loci; MTT assays, flow cytometric cell cycle analysis, and migration/invasion chambers assess functional outcomes; and dual-luciferase reporters quantify Wnt or TGF-?? pathway activity. Typical uses include mechanistic studies of HMGB3 in cancer biology, screening for small-molecule inhibitors, investigating chromatin-mediated pluripotency regulation, and enhancing recombinant protein production in engineered HEK293T lines. For detailed information, availability, and technical support, please contact Ascent Research.
