The DMRT1 Knockout HAP1 Polyclonal Cells product offers a ready-to-use CRISPR/Cas9-edited polyclonal knockout cell population in which the DMRT1 gene has been disrupted in the HAP1 human cell line. This polyclonal pool contains a mixture of edited alleles, providing a more physiologically relevant and robust model for studying gene function compared to single-cell clones, as it mitigates clone-specific artifacts. The CRISPR-mediated gene disruption approach allows researchers to investigate the cellular and molecular consequences of DMRT1 loss in a cost-effective and scalable manner, making it suitable for both small- and large-scale experiments.
The HAP1 host cell line is a near-haploid human chronic myeloid leukemia (CML) cell line derived from the KBM-7 patient isolate. Although originally haploid, the cells undergo spontaneous diploidization, resulting in a stable, mostly diploid karyotype that retains a simplified genetic background. This near-haploid origin facilitates precise genome editing and phenotypic interpretation. HAP1 cells exhibit rapid proliferation and are amenable to a wide range of manipulative techniques, establishing them as a favored model for functional genomics, drug discovery, and signaling pathway analysis in a cancer-relevant context.
DMRT1 (Doublesex and mab-3 Related Transcription factor 1) is a highly conserved transcription factor that plays a master regulatory role in male sex determination and subsequent spermatogenesis. It is activated by upstream signals including SRY, SOX9, SF1 (NR5A1), and FGF9, and it functions by transcriptionally activating key male-promoting genes such as SOX9 and AMH while repressing female pathway genes like FOXL2. DMRT1 interacts directly with SOX9, SF1, WT1, and MAMLD1 to form a regulatory complex that orchestrates Sertoli cell differentiation and testis cord formation. Additionally, DMRT1 intersects with retinoic acid signaling and the TGF-?? pathway to control germ cell maintenance and meiotic entry.
Although the HAP1 cell line is of leukemic hematopoietic origin and does not model gonadal development, knockout of DMRT1 in this system provides a powerful, simplified platform for dissecting its molecular interactions and transcriptional networks independent of cell-type-specific complications. The polyclonal knockout population is particularly valuable for studying DMRT1??s role in gene regulation, screening for small molecules that affect its downstream pathways, and investigating potential non-gonadal functions, such as its emerging involvement in germ cell tumors and other malignancies. The near-haploid background further enhances the clarity of genotypic and phenotypic associations.
This DMRT1 knockout model is applicable to a broad range of research areas, including sex determination, spermatogenesis, reproductive toxicology, drug screening for disorders of sex development (DSD), and target validation for gene therapies. Researchers can employ a diverse toolkit of assays, such as RT-qPCR and Western blotting for expression analysis, ChIP-qPCR and luciferase reporter systems for examining transcriptional activity, RNA-seq for transcriptome profiling, immunofluorescence and flow cytometry for cellular phenotyping, as well as proliferation and drug sensitivity assessments. For further details, technical assistance, or to discuss custom products, please contact Ascent Research.
