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2000
Volume 32, Issue 38
  • ISSN: 0929-8673
  • E-ISSN: 1875-533X

Abstract

Background

Cartilage oligomeric matrix protein (COMP) is a protein that has been implicated in the development of some tumors, but its exact role in gastric cancer (GC) remains unclear.

Objective

The study aims to comprehensively examine COMP in GC and to confirm its effects through experimental methods.

Methods

The research harnessed data from the Cancer Genome Atlas (TCGA) to explore the significance of COMP in GC and its potential as a diagnostic tool. The study also examined the regulatory networks involving COMP, including its interactions with immune cells, immune checkpoint genes, tumor mutational burden (TMB), microsatellite instability (MSI), and the stemness index based on mRNA expression (mRNAsi). Additionally, the study explored the relationship between COMP expression and drug sensitivity in GC. Genomic variations of COMP in GC were assessed. The expression of COMP was validated by the GEPIA2 tool and confirmed with quantitative reverse transcription PCR (qRT-PCR) in cell lines (normal human gastric epithelial cells GES-1 and GC cell lines AGS and HGC-27).

Results

Abnormal expression patterns of COMP were observed in various cancers, including GC. Higher levels of COMP in GC were significantly associated with the pathologic T stage and a history of reflux ( < 0.05 for both). Elevated COMP expression was correlated with poorer progression-free survival (PFS) ( = 0.027). COMP expression levels were identified as an independent prognostic factor for GC ( = 0.017). COMP was linked to TCF-dependent signaling in response to ECM receptor interaction, focal adhesion, and other pathways. There was an association between COMP expression and immune infiltration, immune checkpoint genes, TMB/MSI, and mRNAsi in GC. COMP expression was inversely correlated with the sensitivity to several drugs, indicating that higher levels of COMP may reduce the effectiveness of these drugs. COMP was found to be significantly up-regulated in GC cell lines.

Conclusions

COMP could serve as a prognostic biomarker and a potential therapeutic target for the treatment of GC.

© 2025 Bentham Science Publishers
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2025-10-30

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Cartilage Oligomeric Matrix Protein: A Potential Prognostic Biomarker and Therapeutic Target in Gastric Cancer
Curr. Med. Chem. 32, 8647 (2025); https://doi.org/10.2174/0109298673360512250329171036
/content/journals/cmc/10.2174/0109298673360512250329171036
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  • Article Type:     Research Article
Keyword(s): COMP; drug sensitivity; gastric cancer; prognostic; therapeutic target; TMB

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