Transcriptomic Profiling of Highly Expressed Genes Stratifies Nasopharyngeal Carcinoma Progression and Highlights Transferrin Receptor Dysregulation: A Bioinformatic Approach

Background: Nasopharyngeal carcinoma (NPC) is a malignant epithelial tumor with complex pathogenesis and high metastatic potential. Disruption of iron metabolism is a recognized hallmark of cancer progression, yet its stage-specific transcriptomic landscape in NPC requires deeper elucidation. This study aims to identify highly expressed gene signatures that classify NPC progression and characterize the dysregulation of the transferrin receptor (TFRC) pathway. Methods: Publicly available microarray expression data from the NCBI GEO DataSet Record GDS3341 —comprising laser-captured microdissected NPC tissues across different developmental stages and healthy controls— were analyzed. Using using custom R scripts highly expressed and differentially expressed genes were identified. Principal Component Analysis (PCA) and hierarchical clustering (dendrograms) were performed to evaluate sample stratification. Targeted expression analysis was conducted on the TFRC and associated iron-homeostasis genes. Results: PCA and hierarchical clustering using the identified high-expression gene signatures clearly segregated healthy controls from NPC samples. Crucially, the TFRC exhibited significant, dysregulation highlighting an enhanced iron-acquisition phenotype in tumor cells. Paradoxically, the remaining genes driving the endosomal transport cycle maintained remarkably low and unaltered expression profiles across all stages. Conclusion : Our bioinformatic analysis demonstrates that stage-specific transcriptomic signatures can precisely classify NPC development. Our findings reveal a distinct molecular uncoupling between TFRC and downstream transport machinery in NPC. This asymmetric phenotype suggests that the basal endosomal apparatus possesses sufficient functional recycling capacity to handle increased receptor trafficking without transcriptional upregulation.