The H1-0 Knockout HeLa Polyclonal Cells are a CRISPR/Cas9-edited polyclonal population carrying a targeted disruption of the H1-0 gene in HeLa cells. This loss-of-function model enables investigation of linker histone H1.0 in chromatin architecture and gene regulation. The polyclonal format captures heterogeneous editing outcomes, providing a robust system for studying collective effects of H1-0 ablation without clonal selection artifacts. Researchers can examine how H1-0 depletion alters chromatin organization and transcriptional programs in a cancer context.
HeLa cells are a human cervical adenocarcinoma line positive for HPV18, widely used in cancer and chromatin research. Originally from a cervical tumor, these immortalized cells retain epithelial characteristics and model cervical barrier function and mucosal immunity. The HeLa genome is well characterized, and its ease of manipulation makes it ideal for gene knockout. In the context of H1-0 disruption, this background enables exploration of linker histone dynamics and malignant transformation.
H1-0 encodes linker histone H1.0, which binds nucleosomal and linker DNA to stabilize higher-order chromatin and repress transcription. Its expression is regulated by retinoic acid signaling, TGF-beta, and serum deprivation, and is linked to cell cycle arrest and differentiation. H1-0 interacts with core histones, HMGB1, DNMT1, and p53 to mediate chromatin compaction. Downstream, H1-0 increases nucleosome repeat length and counteracts chromatin remodelers such as SWI/SNF, serving as a node between extracellular signals and transcriptional output.
H1-0 knockout in HeLa cells eliminates linker histone H1.0, reducing chromatin compaction and altering nucleosome spacing, leading to global derepression of transcription and an open chromatin state. This promotes oncogenic gene expression and de-differentiation. In the HPV-driven HeLa background, loss of H1-0 exacerbates epigenetic dysregulation, amplifying pathways that drive proliferation and loss of epithelial identity. Thus, these polyclonal cells are valuable for dissecting linker histone-mediated epigenetic control in cancer.
These cells are suited for chromatin biology, epigenetic regulation, cancer epigenetics, and differentiation studies. They can be used in drug sensitivity screens targeting open chromatin. Typical assays include western blotting, RT-qPCR, RNA-seq, ATAC-seq, ChIP-qPCR, immunofluorescence, and functional assays like proliferation and wound healing. For further information, please contact Ascent Research.
