The KDM5D Knockout Ca Ski Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population engineered for loss-of-function studies of the histone lysine demethylase KDM5D. This heterogeneous cell pool, derived through targeted gene disruption, enables the investigation of KDM5D-dependent chromatin remodeling and transcriptional regulation in a human cervical carcinoma background. The polyclonal nature preserves the genetic diversity of the knockout, making it a robust model for studying gene function without clonal selection bias. This product is supplied as a ready-to-use cryopreserved population, validated for KDM5D depletion, and is suitable for downstream applications including epigenetic profiling and functional assays.
The host cell line, Ca Ski, is an adherent epithelial cell line established from a cervical epidermoid carcinoma metastasis to the small bowel mesentery. These cells are human papillomavirus type 16 (HPV-16) positive, retaining key oncogenic drivers that recapitulate the molecular landscape of HPV-associated cancers. Ca Ski cells exhibit a squamous cell carcinoma phenotype and are widely used to study cervical cancer biology, HPV-mediated transformation, and tumor suppressor gene function. Their well-characterized growth characteristics and responsiveness to epigenetic modifiers make them an ideal host for dissecting the role of chromatin-modifying enzymes.
KDM5D encodes a histone demethylase that specifically removes methyl groups from di- and monomethylated lysine 4 of histone H3 (H3K4me2/me1), leading to transcriptional repression. This enzyme functions as a critical regulator of chromatin structure and gene expression, with established roles in spermatogenesis and male fertility. In the context of cancer, KDM5D has been implicated as a tumor suppressor, potentially through the repression of oncogenic targets. The KDM5D protein interacts with transcriptional repressor complexes including HDAC1, HDAC2, SIN3A, and REST, and is regulated by upstream factors such as the androgen receptor (AR), SOX9, and SF1. Its demethylase activity influences downstream effectors like CDKN1A, CDH1, and SNAI2, linking KDM5D to cell cycle control and epithelial-mesenchymal transition.
In HPV-positive cervical carcinoma cells, disruption of KDM5D provides a powerful system to explore the interplay between epigenetic silencing and viral oncogenesis. Loss of KDM5D likely alters H3K4 methylation patterns at specific loci, derepressing genes that may synergize with HPV E6/E7-driven pathways. This model enables the delineation of KDM5D??s tumor-suppressive functions in a relevant cancer model, offering insights into how histone demethylase activity influences proliferation, migration, and metastasis. By using a polyclonal knockout population, researchers can assess the average phenotypic outcomes of KDM5D disruption while minimizing artifacts from single-clone variability, thus enhancing the biological relevance of the findings.
This knockout product is ideally suited for a range of biomedical research applications, including ChIP-seq analysis of genome-wide histone mark redistribution, RNA-seq to profile transcriptional changes upon KDM5D loss, and functional assays such as cell proliferation and migration assays. It also supports drug screening efforts for demethylase inhibitors and the validation of KDM5D as a therapeutic target in HPV-driven cancers. The combination of a well-characterized host cell line and efficient CRISPR/Cas9-mediated gene disruption makes these polyclonal knockout cells a valuable tool for advancing our understanding of epigenetic regulation in cervical carcinoma. For further details or to discuss customized services, please contact Ascent Research.
