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Updated: Aug 24, 2025

Microarray-based Identification of Individual HERV Loci Expression: Application to Biomarker Discovery in Prostate Cancer
Published on: November 2, 2013
The Comprehensive Analysis of Hub Gene ARRB2 in Prostate Cancer
Bing Zhou1, Hong Song1, Wuqin Xu1
1Department of Pathology, Yijishan Hospital, The First Affiliated Hospital of Wannan Medical College, Wuhu, Anhui 241001, China.
Methods:
The differential expressed genes (DEGs) were screened from the gene expression profile GSE30994 related to PRAD and then analyzed by protein-protein interaction (PPI) to screen the hub gene. Subsequently, the relation between hub gene and pan cancers, PRAD prognosis, and immunotherapy was analyzed. Besides, the effects of hub gene on the growth and metastasis of PRAD cell lines and inflammatory factors (IFs) were detected by functional experiments.
Results:
276 upregulated and 1,861 downregulated DEGs were analyzed from GSE30994 gene expression profiles. Through enrichment analysis, it was found that upregulated DEGs were significantly enriched in nitric oxide-mediated signal transduction, insulin signaling pathway, etc. Through PPI networks, ARRB2 was determined as the hub gene that was highly expressed in pan cancers, including PRAD, and contributed to poor prognosis of PRAD patients. Immunoassay showed that ARRB2 was associated with B cells, NK cells, endothelial cells, etc. and also connected with tumor-infiltrating lymphocytes (TILs). Next, the signature model analysis revealed that ARRB2 had a clinical value in predicting PRAD prognosis. In functional experiments, ARRB2 was highly expressed in PRAD cell lines, promoted PRAD cell growth and metastasis, and positively associated with IFs.
Conclusion:
ARRB2 has a good prognostic ability in PRAD, and it could be a potential target of PRAD immunotherapy, which offers new directions for PRAD research.
Insights
The study identified ARRB2 as a key gene in prostate cancer (PRAD). High ARRB2 expression correlates with poor prognosis and promotes tumor growth, suggesting it as a potential target for PRAD immunotherapy.
Area of Science:
- Oncology
- Genomics
- Immunotherapy
Background:
- Prostate cancer (PRAD) research seeks novel therapeutic targets.
- Understanding gene expression profiles is crucial for identifying PRAD biomarkers.
Purpose of the Study:
- To identify a hub gene in PRAD using gene expression data.
- To analyze the relationship between the hub gene, PRAD prognosis, and immunotherapy response.
- To investigate the functional role of the hub gene in PRAD progression.
Main Methods:
- Differential gene expression analysis of the GSE30994 dataset for PRAD.
- Protein-protein interaction (PPI) network analysis to identify hub genes.
- Correlation analysis with pan-cancer data, PRAD prognosis, and immune cells.
- Functional experiments assessing effects on cell growth, metastasis, and inflammatory factors.
Main Results:
- ARRB2 was identified as the hub gene, highly expressed in PRAD and associated with poor prognosis.
- ARRB2 expression correlated with immune cell infiltration, including B cells, NK cells, and tumor-infiltrating lymphocytes (TILs).
- Functional experiments confirmed ARRB2 promotes PRAD cell growth and metastasis and is linked to inflammatory factors.
Conclusions:
- ARRB2 demonstrates significant prognostic value in PRAD.
- ARRB2 represents a potential therapeutic target for PRAD immunotherapy.
- This study provides new avenues for PRAD research and treatment strategies.
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