The AKT1 Knockout Ca Ski Polyclonal Cells are a CRISPR/Cas9-edited heterogeneous population of Ca Ski human cervical carcinoma cells carrying targeted disruptions in the AKT1 gene. This polyclonal knockout model eliminates functional AKT1 protein expression across the cell pool, providing a robust loss-of-function system for dissecting AKT1-dependent signaling in a malignant cervical epithelial context.
The Ca Ski cell line is a well-characterized HPV-16-positive cervical epidermoid carcinoma epithelial line originally derived from a metastatic site in the small intestine. These cells retain features of cervical carcinoma, including integration of high-risk HPV oncogenes E6 and E7, which drive dysregulation of p53 and retinoblastoma protein pathways, respectively. The tumorigenic nature and epithelial origin make Ca Ski an appropriate host for investigating AKT1-related oncogenic mechanisms in cervical cancer.
AKT1 encodes a serine/threonine kinase central to the PI3K/AKT signaling pathway. It is activated by PIP3 and PDK1, with full activation requiring mTORC2-mediated phosphorylation. Active AKT1 phosphorylates downstream targets including BAD, Caspase-9, FOXO1/3a, GSK3??, and TSC2, thereby inhibiting apoptosis, promoting cell-cycle progression, and stimulating protein synthesis via mTORC1. Additionally, AKT1 phosphorylates MDM2 and PRAS40, influencing p53 stability and mTORC1 activity, respectively. Negative regulation is mediated by PTEN-mediated PIP3 dephosphorylation and by phosphatases PP2A and PHLPP. Interacting partners such as Hsp90 modulate AKT1 stability. Through these interactions, AKT1 drives cell survival, proliferation, metabolism, and angiogenesis.
In Ca Ski cervical carcinoma cells, AKT1 knockout disrupts the PI3K/AKT cascade that is frequently hyperactivated by HPV oncoproteins. This polyclonal loss-of-function model attenuates AKT1-dependent survival and proliferative signals, leading to enhanced apoptosis and impaired metabolic reprogramming. It enables dissection of AKT1-specific functions and crosstalk between HPV drivers and the AKT pathway, making it valuable for cervical cancer research.
Research applications include signaling studies via western blotting and phospho-kinase arrays, proliferation and apoptosis assays (MTT, flow cytometry, colony formation), and migration/invasion analysis using Transwell chambers. Transcriptomic profiling by RNA-seq or RT-qPCR identifies AKT1-dependent gene networks. Drug sensitivity testing with PI3K/AKT/mTOR inhibitors facilitates target validation and therapeutic screening. These polyclonal knockout cells also support biomarker discovery and apoptosis research. Contact Ascent Research for further details.
