The HMGN2 Knockout HEK293T Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population targeting the HMGN2 gene in a Homo sapiens epithelial background. This product comprises a heterogeneous pool of HEK293T cells carrying targeted disruption of HMGN2, providing a versatile loss-of-function model for investigating chromatin biology, transcriptional regulation, and DNA repair mechanisms. The polyclonal nature allows researchers to study bulk cellular responses without the clonal selection bias inherent in monoclonal lines, making it suitable for applications that require representation of varied genetic backgrounds within an isogenic context.
HEK293T is a widely utilized human embryonic kidney cell line that stably expresses the SV40 large T antigen, facilitating episomal replication of plasmids harboring the SV40 origin of replication and yielding high transfection efficiency. Derived from the parental HEK293 line, these adherent epithelial cells are a cornerstone in biomedical research, particularly for protein expression, viral production, and functional genomics. Their robust growth characteristics and relevance to cancer biology make them an ideal host for studying gene function in cellular proliferation, signal transduction, and DNA damage responses.
HMGN2 encodes a non-histone chromosomal protein that binds nucleosomes and competes with linker histone H1, binding to nucleosomes to decompact chromatin and enhance the accessibility of transcriptional machinery and repair factors. This chromatin remodeling activity is regulated by upstream signals such as serum growth factors and transcription factors including MYC and E2F1. HMGN2 interacts with nucleosomes, histone H1, chromatin remodelers, and transcription factors, and its activity promotes transcriptional activation of target genes by facilitating RNA polymerase II recruitment. Downstream, HMGN2-mediated chromatin decompaction is essential for efficient transcription and DNA repair processes. Knockout of HMGN2 reduces chromatin accessibility, alters gene expression profiles, and impairs both cell proliferation and the cellular response to DNA damage.
In the HEK293T context, HMGN2 knockout provides a physiologically relevant model to dissect the interplay between chromatin structure and fundamental cellular processes. The loss of HMGN2 is anticipated to increase chromatin compaction, potentially dampening transcriptional programs driven by serum growth factors, MYC, and E2F1, and compromising DNA repair kinetics. Given the cell line??s origin and its widespread use in cancer research, this model is particularly suited to explore how chromatin dynamics influence oncogenic signaling and genome stability, leveraging HEK293T??s high transfectability for subsequent pathway reconstitution or reporter assays.
These polyclonal knockout cells are a powerful tool for a broad range of experimental readouts. Researchers can employ western blotting and RT-qPCR to verify HMGN2 depletion, ATAC-seq to assess genome-wide chromatin accessibility changes, and RNA-seq for transcriptional profiling. Proliferation assays enable evaluation of growth phenotypes, while ??H2AX foci analysis provides a readout of DNA double-strand break accumulation and repair efficiency. Co-immunoprecipitation can be used to probe HMGN2 interactions with histone H1 or chromatin remodelers. This product supports detailed mechanistic studies in gene regulation, cancer biology, and DNA repair. For further details, please contact Ascent Research.
