The AGO1 Knockout HeLa Polyclonal Cells are a CRISPR/Cas9-edited polyclonal knockout cell population derived from HeLa cells, with targeted disruption of the AGO1 gene. This loss-of-function model enables study of Argonaute-1 in miRNA-mediated gene silencing. As a polyclonal population, it avoids clonal selection artifacts, providing a genetically diverse pool suitable for functional genomic screens and pathway interrogation. The product is generated using CRISPR/Cas9 genome editing, ensuring robust gene disruption across the population.
HeLa cells are an immortalized human cervical adenocarcinoma epithelial cell line originally established from Henrietta Lacks. They are one of the most widely used models in biomedical research, valued for their rapid proliferation, stable karyotype, and high transfection efficiency. Their epithelial origin and oncogenic transformation make them particularly relevant for studying cancer biology, viral infections, and gene expression regulation, providing a biologically appropriate context for dissecting miRNA-dependent processes.
AGO1 encodes the Argonaute-1 protein, a core component of the RNA-induced silencing complex (RISC). It binds mature miRNAs to guide sequence-specific recognition of target mRNAs. miRNA duplex loading is facilitated by Dicer, TRBP, and Hsp90, and AGO1 activity is further modulated by MAPKAPK2-mediated phosphorylation. Upon target binding, AGO1 recruits GW182 proteins (TNRC6A/B/C) and PABPC1, initiating translational repression and deadenylation-dependent mRNA decay. Key downstream targets include the oncogenes MYC and CCND1, and the tumor suppressors BCL2 and PTEN, placing AGO1 at the center of pathways controlling proliferation, apoptosis, and differentiation. AGO1 also interacts with AGO2, forming heteromeric RISC complexes that expand regulatory capacity.
Disruption of AGO1 in HeLa cells eliminates the primary effector of miRNA-mediated silencing, thereby uncoupling miRNA biogenesis from target regulation. This allows researchers to directly assess the role of individual miRNAs in cervical cancer-relevant phenotypes without confounding endogenous RISC activity. Given frequent deregulation of miRNA pathways in cervical adenocarcinoma, the AGO1 knockout model enables systematic identification of AGO1-dependent miRNA?CmRNA interactions that influence oncogenic signaling, tumor suppression, and metastatic potential.
This polyclonal knockout population supports a broad range of applications, including miRNA functional studies, target identification, and drug target validation. Representative assays include western blotting and RT-qPCR to confirm AGO1 loss and measure downstream changes, dual-luciferase reporter assays to monitor miRNA activity, RNA immunoprecipitation (RIP) to analyze AGO1?CmiRNA?CmRNA interactions (following ectopic AGO1 reconstitution), miRNA sequencing to profile expression, and co-immunoprecipitation to assess AGO1?CTNRC6 complex formation. Rescue experiments with wild-type or mutant AGO1 constructs verify phenotype specificity. These cells are ideal for investigations in cancer biology, signal transduction, and post-transcriptional gene regulation. For additional information or technical support, please contact Ascent Research.
