A Multi-Omics Investigation to Decipher the Paradoxical Context Dependent Role of the PTPN1 Gene in Cancer Prognosis

Introduction: To investigate the context-dependent role of the protein tyrosine phosphatase N1 (PTPN1) gene in cancer prognosis. Materials and Methods: Gene expression analysis was conducted using the TIMER 2.0 tool to examine associations between PTPN1 expression levels and clinical outcomes. Mutation and alteration patterns were analyzed using cBioPortal. Context-dependent methylation was examined using the UALCAN platform. Drug sensitivity analysis was performed utilizing the gene set cancer analysis platform. The Human Protein Atlas was used to examine PTPN1 expression in tumor tissues. Overlapping genes associated with PTPN1 were identified using GeneMANIA and STRING. Identified genes were subjected to enrichment analyses through Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway and Gene Ontology (GO) enrichment analyses for biological process (BP), cellular component (CC), and molecular function (MF). Results: Significant variation in PTPN1 expression was identified across cancer subtypes, with its upregulation linked to significantly reduced patient survival. In 27 subtypes, amplification was a common altercation that was present. Significant differences were observed in the methylation of the PTPN1 gene. Drug sensitivity analysis revealed a significant positive correlation between PTPN1 expression and drug therapy. A notable increase in PTPN1 expression was detected in the tumor. Nine genes overlapping with PTPN1 were identified through genetic enrichment analysis, which revealed significant enrichment in KEGG pathways and GO parameters related to cancer prognosis. Discussion: These findings suggest PTPN1 as a potential biomarker and therapeutic target in cancer prognosis and management. Conclusion: PTPN1 exhibited paradoxical context-dependent expression in cancer subtypes, which can be further examined through pre-clinical and clinical studies.