The AGO3 Knockout HAP1 Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population targeting the AGO3 gene in the HAP1 cell background. This heterogeneous pool of cells harbors diverse loss-of-function mutations, providing a robust model for studying AGO3-mediated gene silencing without clonal bias. The polyclonal format is particularly suited for functional genomic screens and pathway dissection. AGO3, a member of the Argonaute family, is integral to RISC assembly and small-RNA-guided post-transcriptional regulation, making this knockout tool valuable for investigating miRNA- and siRNA-dependent mechanisms.
HAP1 is a near-haploid, suspension-adapted chronic myeloid leukemia cell line derived from the male patient-derived KBM-7 line. Its near-haploid karyotype simplifies phenotypic interpretation by reducing genetic redundancy, which is advantageous for knockout studies. HAP1 cells are widely used in functional genomics and genetic screens due to their ease of culture and high editing efficiency. They retain critical signaling pathways relevant to hematopoietic malignancies, offering a physiologically relevant context for dissecting AGO3 function in cancer biology.
AGO3 binds miRNAs and siRNAs as a core RISC component, guiding sequence-specific recognition of target mRNAs to promote translational repression and decay. It directly interacts with GW182, which recruits the CCR4-NOT deadenylase complex, and cooperates with DICER, TRBP, and HSP90 during RISC assembly and loading. AGO3 also associates with AGO2 and localizes to P-body structures involved in mRNA turnover. Through these interactions, AGO3 contributes to post-transcriptional gene regulation networks that govern processes such as development and oncogenesis, with upstream regulation by small RNA processing machinery.
In the near-haploid HAP1 background, AGO3 knockout eliminates the confounding presence of a second allele, enabling unambiguous loss-of-function analysis. This system is particularly powerful for comparing AGO3??s role with other Argonaute paralogs in miRNA-driven gene silencing pathways frequently dysregulated in cancers, including leukemia. The suspension-adapted HAP1 format facilitates high-throughput genetic screens and large-scale biochemical studies, allowing researchers to probe AGO3??s contribution to oncogenic or tumor-suppressive mRNA regulation without clonal artefacts.
The AGO3 Knockout HAP1 Polyclonal Cells are ideal for functional dissection of RNA interference mechanisms. Key applications include RNA immunoprecipitation coupled with small RNA sequencing to profile AGO3-bound guides and targets, luciferase reporter assays for miRNA response element validation, and co-immunoprecipitation to map protein interactors. Western blotting and RT-qPCR further enable quantification of AGO3 depletion effects on target gene expression. These tools support advances in cancer biology, miRNA target identification, and RNA-based therapeutic development. For further details, please contact Ascent Research.
