The HNRNPUL1 Knockout HeLa Polyclonal Cells product consists of a CRISPR/Cas9-edited polyclonal knockout cell population in which the HNRNPUL1 gene has been disrupted. This heterogeneous pool of HeLa cells carries targeted loss-of-function mutations, avoiding clonal selection artifacts and enabling studies in a mixed genetic background. The polyclonal format is particularly suited for investigating gene function in processes such as mRNA metabolism and DNA damage repair, where population-level responses are informative.
HeLa cells, derived from an HPV18-positive human cervical adenocarcinoma, serve as a classic model for cancer biology. Their epithelial origin and transformed phenotype provide a physiologically relevant context for examining how RNA-binding proteins like HNRNPUL1 contribute to tumor cell proliferation and genomic stability. The well-characterized transcriptome and ease of manipulation make HeLa an ideal host for knockout studies.
HNRNPUL1 is an evolutionarily conserved RNA-binding protein that bridges mRNA biogenesis with genome maintenance. It interacts with the THO and TREX complexes and RNA polymerase II to facilitate mRNA processing and export. Upon DNA damage, ATM and ATR kinases phosphorylate HNRNPUL1, promoting its association with repair factors including RAD51, 53BP1, CtIP, and BRCA1. This phosphorylation-dependent function is critical for proper DNA damage response and chromatin organization, placing HNRNPUL1 at a nexus of RNA metabolism and genome stability.
In the HeLa cervical adenocarcinoma model, HNRNPUL1 knockout can reveal how HPV-positive cancer cells rely on this protein for handling genotoxic stress and sustaining oncogenic mRNA export. Disruption of HNRNPUL1 may impair repair of DNA double-strand breaks and alter the expression of key tumorigenic factors. Because HeLa cells harbor HPV oncoproteins that manipulate both transcription and DNA repair, this knockout provides a platform to dissect context-specific vulnerabilities, potentially informing therapeutic strategies for cervical cancer.
Representative applications include analyzing mRNA export by RNA-seq, quantifying DNA damage accumulation via ??H2AX immunofluorescence, and assessing repair efficiency with comet and clonogenic survival assays. Western blotting and RT-qPCR validate knockout and downstream effects. This polyclonal knockout cell population is ideal for mechanistic studies of the HNRNPUL1 interactome and its role in cancer cell biology. For additional information, please contact Ascent Research.
