ArticleBiomolecules & biomedicine2023
C5aR1 shapes a non-inflammatory tumor microenvironment and mediates immune evasion in gastric cancer.
Article in Biomolecules & biomedicine, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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6 citing papers in PubMed, 10 citations in OpenAlex.
- The insider's perspective: The intracellular complosome and immune cell dynamics in cancer.Clinical and translational medicine · 2026Review
- Integrative management of gastric cardia cancer and precancerous lesions: prospects and mechanistic rationale for Banxia Xiexin Tang.Frontiers in pharmacology · 2026Review
- Bioinformatics analysis reveals C5AR1's impact on thyroid cancer development via immune infiltration.Scientific reports · 2025Article
- G Protein-Coupled Receptor Signaling: Implications and Therapeutic Development Advances in Cancers.MedComm · 2025Review
- G protein-coupled receptors: pivotal hubs in gastric cancer malignancy-from multidimensional crosstalk to precision therapeutics.Journal of translational medicine · 2025Review
- The role of the C5a-C5aR pathway in iron metabolism and gastric cancer progression.Frontiers in immunology · 2024Article
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Authors and funding
11 authors at 1 institution in 1 country.
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Abstract
C5a receptor 1 (C5aR1) is associated with various inflammatory processes, the pathogenesis of immune diseases, and tumor growth. However, its role in the tumor microenvironment of gastric cancer (GC) remains unclear. In this study, the expression of C5aR1 in GC and normal gastric mucosa tissues was compared using data retrieved from the Gene Expression Omnibus (GEO) and The Cancer Genome Atlas (TCGA) databases, and the results were validated by in vitro qRT-PCR and immunohistochemical analyses. The relationship between C5aR1 expression and the overall survival of patients with GC was analyzed using the Kaplan-Meier method. Subsequently, enrichment analysis was performed, and the signaling pathways were screened. C5aR1 expression was also correlated with genes related to the immune checkpoint and immune cell infiltration. The results revealed that C5aR1 expression was enhanced in GC tissues compared to normal gastric tissues, and that patients with high expression of C5aR1 had a worse 10-year overall survival compared to those showing low expression of C5aR1. Functional analysis revealed that C5aR1 is a gene related to theimmune system and may play a crucial role in inflammatory and tumor immune responses. Additionally, C5aR1 showed a positive correlation with most immune checkpoint-related genes and a negative correlation with natural killer cells, dendritic cells, and CD8+ T cells. Immune evasion risk was observed to be significantly greater in patients with higher expression of C5aR1 than in those with lower expression. The results of this study reveal that C5aR1 shapes a non-inflammatory tumor microenvironment in GC and mediates immune evasion.
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