The HMGN1 Knockout HEK293T Polyclonal Cells consist of a CRISPR/Cas9-edited polyclonal knockout cell population engineered to disrupt the HMGN1 gene in human embryonic kidney (HEK293T) cells. This product delivers a heterogeneous pool of cells carrying targeted gene disruption, providing a physiologically relevant loss-of-function model to investigate HMGN1-dependent mechanisms. The polyclonal format avoids clonal bias while maintaining broad representation of editing events across the population, and it is suitable for functional genomics, pathway dissection, and high-throughput assay development without a requirement for single-cell clonal isolation.
The host HEK293T cell line is an adherent, immortalized epithelial line derived from HEK293 cells, stably expressing the SV40 large T antigen. This background supports high-efficiency transfection, robust protein production, and viral packaging, making it a workhorse for molecular and cell biology research. Its human kidney epithelial origin also renders it a tractable system for studying signaling cascades and chromatin regulation relevant to renal physiology and pathological conditions such as cancer and inflammation.
HMGN1 encodes a nucleosome-binding protein that destabilizes higher-order chromatin structure, enhancing the accessibility of regulatory sequences to transcription factors, RNA polymerase II, and chromatin remodeling complexes including FACT and SWI/SNF. This architectural role facilitates transcription, replication, and DNA repair. Beyond its nuclear functions, HMGN1 can be released extracellularly as a damage-associated molecular pattern (DAMP), where it binds Toll-like receptor 4 (TLR4) and triggers MyD88-dependent NF-??B activation, leading to the expression of pro-inflammatory cytokines such as TNF-?? and IL-6. Upstream regulators of HMGN1 include CREB, NF-??B, serum response factor (SRF), and Wnt signaling, while downstream targets encompass c-Fos, c-Jun, and NF-??B-responsive genes. The protein interacts directly with the nucleosome core particle, histone H1, and the transcriptional machinery.
Disrupting HMGN1 in HEK293T cells allows researchers to uncouple its chromatin-remodeling activities from its extracellular alarmin functions. This model is particularly valuable for dissecting how loss of HMGN1 alters nucleosome dynamics, transcription factor recruitment, and global gene expression programs under basal and stimulated conditions. Additionally, it enables study of the crosstalk between chromatin architecture and signal-dependent transcription downstream of TLR4, NF-??B, and CREB. Because HEK293T cells retain active innate immune signaling components, the knockout system is well-suited to examining the contribution of HMGN1 to inflammatory gene regulation and DAMP-mediated pathways without interference from complex tissue microenvironments.
Typical research applications include chromatin immunoprecipitation (ChIP-qPCR) and RNA sequencing (RNA-seq) to map HMGN1-dependent nucleosome occupancy and transcriptional changes, luciferase reporter assays to measure NF-??B or CREB activity, and ELISA-based quantification of cytokine release (TNF-??, IL-6) following TLR4 stimulation. Co-immunoprecipitation and immunofluorescence can be used to assess interactions with the FACT complex or histone H1, while flow cytometry enables profiling of cell surface markers. The knockout cells further support high-throughput screening for epigenetic compounds and functional validation of HMGN1 roles in cancer, autoimmune disorders, neurodevelopmental diseases, and sepsis models. For technical inquiries or to discuss custom applications, please contact Ascent Research.
