The H1-3 Knockout HEK293T Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population designed to disrupt the H1-3 gene, encoding linker histone H1.3. This heterogeneous cell pool enables robust loss-of-function studies without requiring single-cell cloning, offering a practical model for investigating chromatin dynamics.
The parental HEK293T cell line is a well-established human embryonic kidney line stably expressing the SV40 large T-antigen. It displays an adherent epithelial morphology and is renowned for high transfection efficiency and reliable protein expression. These characteristics make it a widely adopted platform for functional genomics, enabling efficient generation of knockout models.
H1-3 encodes linker histone H1.3, a key architectural protein that binds nucleosomes and facilitates higher-order chromatin compaction, thereby regulating gene expression and maintaining genomic stability. Its activity is governed by upstream signaling from cyclin-dependent kinases, E2F transcription factors, and p53, connecting chromatin structure to cell cycle progression. H1.3 interacts with core histones, DNA, and ATP-dependent chromatin remodeling complexes such as SWI/SNF and ISWI. Loss of H1-3 disrupts nucleosome organization, leading to widespread changes in chromatin accessibility and global transcriptional programs.
In the HEK293T cell context, H1-3 knockout provides a powerful system to examine how linker histone depletion impacts chromatin architecture and gene regulation in a human kidney epithelial environment. This model is particularly relevant for investigating mechanisms of transcriptional dysregulation, cell cycle defects, and increased genomic instability associated with cancer and developmental disorders. The tractability of HEK293T cells allows efficient dissection of H1.3-dependent epigenetic pathways.
These polyclonal knockout cells support diverse research applications in epigenetics, chromatin biology, and cancer gene regulation. Standard experimental approaches include Western blotting for protein validation, RT-qPCR and RNA-seq for transcriptome profiling, ChIP-seq for mapping chromatin interactions, and immunofluorescence to visualize histone localization. Flow cytometry can assess cell cycle alterations. For additional technical details, please contact Ascent Research.
