The ABCB10 Knockout CAL-27 Polyclonal Cells constitute a heterogeneous population of CAL-27 human tongue squamous cell carcinoma cells in which the ABCB10 gene has been disrupted via CRISPR/Cas9-mediated genome editing. This polyclonal knockout format provides a robust loss-of-function model for studying ABCB10-dependent processes without clonal selection artifacts. The product is supplied as a mixed population of validated knockout cells suitable for immediate expansion and downstream functional analyses.
CAL-27 cells are a widely employed model of oral squamous cell carcinoma (OSCC), originally established from a tongue lesion of a 56-year-old male patient. This adherent epithelial cell line retains hallmark features of aggressive OSCC, including aneuploidy, invasive potential, and responsiveness to chemotherapeutic agents. Its utility spans oral cancer biology, metastasis studies, and preclinical therapeutic evaluation, making it a relevant host for dissecting gene functions implicated in head and neck malignancies.
ABCB10 encodes a mitochondrial inner membrane ATP-binding cassette transporter that exports protoporphyrin IX into the intermembrane space, a necessary step for heme synthesis. Transcriptionally regulated by GATA1, heme, and HIF1A, its expression is tied to erythropoiesis and hypoxia. Downstream, ABCB10 supports cytochrome c maturation and respiratory chain function. It interacts with ferrochelatase and mitoferrin; loss of ABCB10 disrupts heme production, elevates ROS, and impairs iron homeostasis, positioning it at the nexus of mitochondrial metabolism and oxidative stress protection.
In the CAL-27 background, disruption of ABCB10 is expected to perturb mitochondrial heme export, impair cytochrome c maturation, and elevate oxidative stress, potentially altering cell proliferation and apoptotic thresholds. This model thus provides a platform to investigate the interplay between heme metabolism and OSCC pathophysiology, including chemoresistance mechanisms and redox vulnerabilities. These cells enable the study of how heme insufficiency impacts mitochondrial respiratory chain activity and ROS-mediated signaling in an oral cancer context.
This polyclonal knockout model is well suited for applications in heme biosynthesis, mitochondrial metabolism, and oxidative stress research. Functional assays include heme quantification, JC-1 mitochondrial membrane potential measurement, DCFDA-based ROS detection, and MTT/Annexin V viability/apoptosis analyses. Gene expression can be monitored by RT-qPCR and protein levels by Western blotting. The cells also facilitate oral cancer drug target validation and redox signaling investigation. For technical inquiries or custom services, contact Ascent Research.
