The ABCB10 Knockout Ca Ski Polyclonal Cells product provides a CRISPR/Cas9-edited polyclonal knockout population targeting the ABCB10 gene in the human Ca Ski cervical carcinoma epithelial cell line. This heterogeneous pool allows loss-of-function analysis of mitochondrial heme and iron homeostasis without the selective bias of clonal isolation. The polyclonal format is particularly suited for functional assays requiring genetic diversity, such as drug sensitivity screens and metabolic profiling.
The Ca Ski host cell line originates from a small intestine metastasis of a cervical squamous cell carcinoma and is a widely used model for HPV16-positive cervical cancer. These cells contain integrated HPV16 and HPV18 genomes, resulting in the expression of E6 and E7 oncoproteins that inactivate the p53 and pRB tumor suppressors. Consequently, Ca Ski cells exhibit deregulated cell cycle control, genomic instability, and metastatic properties, making them valuable for studying HPV-driven oncogenic mechanisms and therapeutic interventions.
ABCB10 encodes a mitochondrial inner membrane transporter essential for heme biosynthesis, iron export, and protection against oxidative stress. Its expression is regulated by the transcription factors GATA1 and STAT3 in response to intracellular heme levels and oxidative stress. The protein physically interacts with ferrochelatase and mitoferrin-1 to coordinate heme production and iron trafficking. Downstream, ABCB10 is required for optimal function of ALAS2, the rate-limiting enzyme in heme synthesis, and contributes to cytochrome c oxidase assembly and iron-sulfur cluster protein maturation. Disruption of ABCB10 impairs these processes, leading to mitochondrial iron accumulation, defective oxidative phosphorylation, and increased reactive oxygen species (ROS) production.
In the Ca Ski cervical cancer context, where HPV oncoproteins drive metabolic reprogramming, ABCB10 knockout offers a model to investigate how mitochondrial heme and iron homeostasis influence tumor cell fitness. The loss of ABCB10 is expected to exacerbate oxidative stress and impair ATP generation, thereby reducing proliferation, survival, and metastatic potential. This enables detailed dissection of the interplay between mitochondrial transporter dysfunction, viral oncoprotein signaling, and stress response pathways, potentially identifying novel targets for therapeutic intervention in HPV-positive malignancies.
Researchers can employ this polyclonal knockout pool in a broad range of studies: examining mitochondrial iron metabolism in cancer, dissecting heme biosynthesis regulation, evaluating oxidative stress responses, and assessing drug sensitivity mechanisms in cervical cancer progression. Compatible techniques include Western blotting for ABCB10 and downstream targets, RT-qPCR for ALAS2 and ferrochelatase, mitochondrial iron quantification, heme and ROS assays, cell viability, colony formation, and migration assays, as well as Seahorse metabolic flux analysis. For further information on characterization and application protocols, please contact Ascent Research.
