Identification of Differentially Expressed Genes in Non-functioning Pituitary Adenoma by Transcriptome Analysis

Area of Science:

• Endocrinology
• Oncology
• Genomics

Background:

• Non-functioning pituitary adenoma (NFPA) is the most common pituitary tumor, often diagnosed late due to compression symptoms.
• Current surgical treatments for NFPA have suboptimal remission rates.
• Understanding the molecular mechanisms of NFPA is crucial for improving patient outcomes.

Purpose of the Study:

• To identify differentially expressed genes (DEGs) involved in the pathogenesis of NFPA.
• To explore signaling pathways and key molecules implicated in NFPA development.
• To discover potential biomarkers for NFPA diagnosis and targeted therapy.

Main Methods:

• Gene expression microarrays were used to compare 45 NFPA samples with 8 normal controls.
• Enrichment analysis was performed to identify significant signaling pathways in NFPA.
• Protein-protein interaction (PPI) networks were constructed to pinpoint key genes.

Main Results:

• 270 genes were upregulated, and 2,428 genes were downregulated in NFPA samples.
• Cytokine-cytokine receptor interaction was a significantly affected pathway, with upregulation of PRLR, TNFRSF21, and LEPR.
• CCND1, POU5F1, SOX2, HNF1A, BRCA1, and FOXA1 emerged as critical nodes in PPI networks.

Conclusions:

• CCND1, POU5F1, SOX2, HNF1A, BRCA1, and FOXA1 were identified as key molecules in NFPA.
• These genes hold potential as biomarkers for NFPA diagnosis.
• These identified molecules may offer new avenues for targeted NFPA therapy.