The DUS1L Knockout HeLa Polyclonal Cells constitute a CRISPR/Cas9-mediated polyclonal knockout cell population, produced by disrupting the DUS1L gene in HeLa cells to create a heterogeneous pool of edited cells. This format eliminates the need for single-cell clone isolation, offering a robust loss-of-function model suitable for a variety of functional assays.
HeLa cells are an immortalized epithelial cell line derived from cervical adenocarcinoma, featuring integration of HPV18. These cells are widely used in cancer research due to their stable growth characteristics, ease of transfection, and relevance to tumor biology, making them a valuable host for studying genes involved in mitochondrial function and tRNA metabolism.
DUS1L functions as a cytoplasmic tRNA dihydrouridine synthase, introducing dihydrouridine modifications that stabilize tRNA structure and enhance translation efficiency. Its activity is particularly important for the expression of mitochondrial-encoded proteins such as MT-CO1 and MT-ND1, thereby supporting respiratory chain assembly and oxidative phosphorylation. While direct upstream regulators of DUS1L are uncharacterized, it may be influenced by stress-responsive transcription factors or TP53. DUS1L interacts with its tRNA substrates and is functionally coupled to mitochondrial ribosomes, positioning it at a critical node linking cytoplasmic tRNA modification to mitochondrial protein synthesis.
In the HeLa background, loss of DUS1L is predicted to reduce tRNA dihydrouridine levels, impairing mitochondrial translation and leading to defects in oxidative phosphorylation. This can trigger metabolic stress and modulate cell proliferation, providing a model to examine how disruptions in tRNA modification contribute to tumor-suppressive mechanisms, particularly relevant to lung adenocarcinoma research. The model enables investigation of DUS1L??s role in cancer cell biology within an epithelial context.
These polyclonal knockout cells are suitable for diverse applications, including western blotting to verify DUS1L depletion, RT-qPCR for transcript analysis, and immunofluorescence for mitochondrial morphology assessment. Seahorse respirometry can quantify mitochondrial function, while LC-MS or mass spectrometry measures dihydrouridine levels directly. Additional assays such as colony formation, Ribo-seq, and drug screening for synthetic lethality further broaden the utility of this model in studying tRNA modification, mitochondrial dysfunction, and tumor suppression. For further inquiries, please contact Ascent Research.
