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Updated: May 6, 2026
The Use of Reverse Phase Protein Arrays RPPA to Explore Protein Expression Variation within Individual Renal Cell Cancers
Published on: January 22, 2013
Identification of CXCR4 as a potential preventive gene in clear cell renal cell carcinoma from machine learning and
Fengming Hu1, Xiao Wang2, Runsheng Wu1
1Department of Urology, Shenzhen Pingle Orthopedic Hospital (Shenzhen Pingshan Traditional Chinese Medicine Hospital), Shenzhen, 518118, Guangdong, China.
Abstract:
Clear cell renal cell carcinoma (ccRCC) represents a prevalent malignant kidney tumor characterized by high metastatic potential and recurrence rates. Investigations into the molecular mechanisms and therapeutic targets of ccRCC have provided novel directions for early diagnosis and targeted therapy. The CXCR4 gene plays a pivotal role in tumor progression and metastasis. In this study, this study first conducted differential analysis and WGCNA analysis on the dataset, and performed GO and KEGG analysis on the differentially expressed genes, revealing key biological processes and signaling pathways, particularly in cell adhesion and immune regulation. Based on WGCNA and cross genes of differentially expressed genes, 50 central genes were identified through PPI analysis. LASSO, SVM-RFE, and RF algorithms are used to identify the key gene CXCR4 associated with ccRCC. Survival analysis revealed that high CXCR4 expression correlates with poor patient prognosis. Immune analysis highlighted differences in immune cell distribution across ccRCC subtypes, emphasizing the importance of gene-immune interactions in disease pathogenesis. Finally, validation was conducted in vitro using techniques such as PCR and Western blot. Our findings position CXCR4 as a potential preventive gene, offering new theoretical insights for early diagnosis and targeted treatment of ccRCC.
Insights
Clear cell renal cell carcinoma (ccRCC) is a kidney cancer that can spread. This study identifies the CXCR4 gene as a key factor in ccRCC progression and a potential target for early diagnosis and treatment.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Clear cell renal cell carcinoma (ccRCC) is a common kidney cancer with high metastatic potential.
- Understanding ccRCC molecular mechanisms is crucial for developing early diagnostic and therapeutic strategies.
- The CXCR4 gene has been implicated in tumor progression and metastasis.
Purpose of the Study:
- To identify key genes and pathways involved in ccRCC progression.
- To investigate the role of CXCR4 in ccRCC.
- To explore CXCR4 as a potential diagnostic and therapeutic target for ccRCC.
Main Methods:
- Differential gene expression analysis, Weighted Gene Co-expression Network Analysis (WGCNA), Gene Ontology (GO), and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis were performed.
- Protein-protein interaction (PPI) analysis identified 50 central genes.
- LASSO, Support Vector Machine-Recursive Feature Elimination (SVM-RFE), and Random Forest (RF) algorithms pinpointed CXCR4.
- In vitro validation used PCR and Western blot.
Main Results:
- Differential analysis and WGCNA revealed key biological processes, including cell adhesion and immune regulation in ccRCC.
- CXCR4 was identified as a key gene associated with ccRCC through multiple algorithms.
- High CXCR4 expression correlated with poor patient prognosis.
- Immune analysis showed distinct immune cell distributions across ccRCC subtypes.
Conclusions:
- CXCR4 plays a significant role in ccRCC progression and metastasis.
- CXCR4 is a potential biomarker for early diagnosis and a therapeutic target for ccRCC.
- Gene-immune interactions are important in ccRCC pathogenesis.
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