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.

Medicine
|December 29, 2020
PubMed

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.

Related Concept Videos

mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
4.1K
Interactions Between Signaling Pathways01:19

Interactions Between Signaling Pathways

Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
6.9K
PI3K/mTOR/AKT Signaling Pathway01:22

PI3K/mTOR/AKT Signaling Pathway

The mammalian target of rapamycin  (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1  (mTORC1) and mTOR complex 2  (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast,  mTORC2 consists of a...
4.8K
The Tumor Microenvironment02:17

The Tumor Microenvironment

Every normal cell or tissue is embedded in a complex local environment called stroma, consisting of different cell types, a basal membrane, and blood vessels. As normal cells mutate and develop into cancer cells, their local environment also changes to allow cancer progression. The tumor microenvironment (TME) consists of a complex cellular matrix of stromal cells and the developing tumor. The cross-talk between cancer cells and surrounding stromal cells is critical to disrupt normal tissue...
7.3K