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Updated: Nov 24, 2025

In Vitro Assay to Study Tumor-macrophage Interaction
Published on: August 1, 2019
Tumor-associated macrophages based signaling pathway analysis and hub genes identification in glioma
Xiang Wang1, Weihai Ning, Zhiqiang Qiu
1Department of Neurosurgery, Sanbo Brain Hospital, Capital Medical University, Beijing, China.
Abstract:
Tumor-associated macrophages (TAMs) play a crucial role in the immune response to many malignancies, but the signaling pathways by which the glioma microenvironment cross-talk with TAMs are poorly understood. The aim of this study was to uncover the potential signaling pathways of the regulation of TAMs and identify candidate targets for therapeutic intervention of glioma through bioinformatics analysis.Chinese Glioma Genome Atlas (CGGA) and The Cancer Genome Atlas (TCGA) datasets were used to download RNA-Seq data and microarray data of human glioma specimen. Differentially expressed genes (DEGs) between CD68-high samples and CD68-low samples were sorted. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis of the DEGs was conducted. Protein-protein interaction (PPI) network were formed to identify the hub genes.The prognostic value of TAMs in glioma patients was confirmed. A total of 477 specific DEGs were sorted. The signaling pathway was identified in pathway enrichment and the DEGs showed prominent representations of immune response networks in glioma. The hub genes including C3, IL6, ITGB2, PTAFR, TIMP1 and VAMP8 were identified form the PPI network and they were all correlated positively with the expression of CD68 and showed the excellent prognostic value in glioma patients.TAMs can be used as a good prognostic indicator in glioma patients. By analyzing comprehensive bioinformatics data, we uncovered the underlying signaling pathway of the DEGs between glioma patients with high and low expression level of CD68. Furthermore, the 6 hub genes identified were closely associated with TAMs in glioma microenvironment and need further investigation.
Insights
Tumor-associated macrophages (TAMs) are key in glioma immunity. This study identified signaling pathways and six hub genes (C3, IL6, ITGB2, PTAFR, TIMP1, VAMP8) linked to TAMs, offering potential therapeutic targets for glioma.
Area of Science:
- Oncology
- Immunology
- Bioinformatics
Background:
- Tumor-associated macrophages (TAMs) are vital in cancer immunity, but their signaling in the glioma microenvironment is unclear.
- Understanding glioma-TAM interactions is crucial for developing new therapies.
Purpose of the Study:
- To explore signaling pathways regulating TAMs in glioma.
- To identify potential therapeutic targets for glioma by analyzing bioinformatics data.
Main Methods:
- Utilized Chinese Glioma Genome Atlas (CGGA) and The Cancer Genome Atlas (TCGA) datasets.
- Performed differential gene expression analysis, Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment, and protein-protein interaction (PPI) network analysis.
Main Results:
- Confirmed the prognostic value of TAMs in glioma.
- Identified 477 differentially expressed genes (DEGs) and key immune response pathways.
- Discovered six hub genes (C3, IL6, ITGB2, PTAFR, TIMP1, VAMP8) positively correlated with CD68 expression and glioma prognosis.
Conclusions:
- TAMs serve as significant prognostic indicators in glioma.
- Uncovered underlying signaling pathways and identified six hub genes associated with TAMs in the glioma microenvironment.
- These hub genes represent promising candidates for further investigation and therapeutic development in glioma.
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