The DUS1L Knockout MES-OV Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population derived from the MES-OV mouse embryonic stem cell line, featuring targeted disruption of the DUS1L gene. This product format provides a heterogeneous pool of knockout cells generated via CRISPR/Cas9-mediated gene editing, enabling robust loss-of-function studies without the need for clonal isolation. The polyclonal nature preserves genetic diversity and reflects population-level effects of DUS1L ablation, making it suitable for a wide range of downstream analyses.
MES-OV is a well-characterized embryonic stem cell line derived from the inner cell mass of a C57BL/6 mouse blastocyst. These pluripotent cells possess the capacity for indefinite self-renewal while retaining the ability to differentiate into derivatives of all three germ layers??ectoderm, mesoderm, and endoderm. As a result, MES-OV cells serve as a standard model for investigating the molecular mechanisms governing pluripotency and lineage commitment, providing a physiologically relevant context for studying the impact of genetic perturbations on stem cell function.
DUS1L encodes a dihydrouridine synthase that catalyzes the reduction of uridine to dihydrouridine in the D-loop of tRNAs, a modification critical for proper tRNA folding, stability, and ribosomal interaction, thereby ensuring accurate translation. Within the tRNA modification pathway, DUS1L interacts with other modifying enzymes and translation machinery components, including elongation factors, and its activity influences downstream processes such as tRNA stability, protein synthesis, and cellular differentiation. While upstream regulators of DUS1L remain unknown, disruption of this gene is predicted to impair dihydrouridylation, leading to global translational defects that may affect proteins essential for cell identity.
In the context of MES-OV pluripotent stem cells, DUS1L knockout provides a powerful model to dissect the role of tRNA modifications in the regulation of stem cell self-renewal and differentiation. Because translation control is a critical checkpoint in pluripotency maintenance, loss of DUS1L-mediated tRNA modification may alter the expression of key pluripotency transcription factors such as Oct4 and Nanog, as well as lineage-specific regulators. This polyclonal knockout population allows researchers to examine how population-level changes in tRNA dihydrouridine levels influence the proteome and cellular phenotypes associated with stem cell fate decisions, bridging epitranscriptomics and stem cell biology.
Applications for this polyclonal knockout cell population include mechanistic studies of tRNA modification in pluripotency and translational regulation, disease modeling, and drug screening targeting epitranscriptomic pathways. Representative assays compatible with this model encompass western blotting for pluripotency markers (Oct4, Nanog), RT-qPCR for differentiation genes, LC-MS-based tRNA modification analysis, RNA-seq, embryoid body formation assays, proliferation assays, and immunofluorescence. These cells provide a versatile platform for epitranscriptomic research in stem cell biology. For further details, please contact Ascent Research.
