C1orf21 Knockout HK-2 Cell Line

The C1orf21 Knockout HK-2 Cell Line is a precisely engineered human cellular model in which the C1orf21 gene is disrupted via CRISPR/Cas9-mediated editing. Based on the well-characterized HK-2 immortalized kidney proximal tubule epithelial cell line, this product offers a stable loss-of-function tool for interrogating the biological roles of C1orf21. The knockout is achieved through targeted genome modification, generating a permanent alteration that abrogates gene function. Researchers can thus bypass the variability and transient effects inherent to RNA interference methods.

HK-2 cells retain core features of proximal tubule epithelium, including polarized structure, expression of brush border enzymes, and active transport of solutes. They also perform metabolic transformations and endocrine functions typical of this nephron segment. As a result, HK-2 is extensively used to model renal physiology, toxicology, and disease states such as acute kidney injury, fibrosis, and drug-induced nephrotoxicity. Its robust culture characteristics and amenability to genetic manipulation make it an optimal chassis for gene-editing studies.

The C1orf21 protein is predicted to contain DNA-binding domains, implicating it in transcriptional regulation. It is associated with RNA Polymerase I transcription pathways and may engage subunits of the Pol I complex, although its precise interactome and downstream effects are not known. By using C1orf21 knockout cells, scientists can begin to map this uncharacterized factor??s involvement in Pol I-dependent rRNA synthesis and global gene expression control. The model enables identification of transcriptional targets and signaling partners that mediate C1orf21??s cellular functions.

In the renal proximal tubule context, loss of C1orf21 may impact programs governing solute reabsorption, metabolism, and endocrine activity. This line is especially valuable for studying chromosome 1p36 deletion syndrome, which can involve renal anomalies, and for cancer research given the gene??s location in a frequently altered region. The model facilitates dissection of how C1orf21 contributes to transcriptional homeostasis in highly active epithelia, with implications for understanding both normal kidney physiology and neoplastic transformation.

Key applications include transcriptome-wide RNA-seq analysis to reveal pathways altered by C1orf21 knockout, RT-qPCR for validation, and western blotting or immunocytochemistry to examine protein expression and localization when reagents permit. Cell viability and apoptosis assays can assess the gene??s role in stress responses. The line is suitable for drug toxicity testing and disease modeling. For further details, including bulk orders, please contact Ascent Research.