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Updated: Aug 5, 2026
11:44
Analysis of Combinatorial miRNA Treatments to Regulate Cell Cycle and Angiogenesis
Published on: March 30, 2019
Integrated Network Analysis Suggests an miR-21/MMP/VEGF-Associated Regulatory Axis in Gastric Cancer
Fatemeh Babajani1, Hadi Mozafari1,2
1Department of Clinical Biochemistry, Medical School, Kermanshah University of Medical Sciences, Kermanshah, Iran.
Cancer Reports (Hoboken, N.J.)
|August 1, 2026
Summary
This study reveals microRNA-21 (miR-21) as a central regulator in gastric cancer (GC) progression. The miR-21/matrix metalloproteinase-9 (MMP-9)/vascular endothelial growth factor (VEGF) axis offers potential therapeutic targets for GC.
Area of Science:
- Molecular Biology
- Systems Biology
- Oncology
Background:
- Gastric cancer (GC) pathogenesis involves complex molecular interactions.
- The individual roles of microRNA-21 (miR-21), matrix metalloproteinases (MMPs), and vascular endothelial growth factor (VEGF) in GC are known, but their integrated regulatory network is uncharacterized.
Purpose of the Study:
- To investigate the integrated role of the miR-21/MMP/VEGF axis in gastric cancer.
- To reveal novel systems-level biological insights into this regulatory axis.
Main Methods:
- Analysis of 27 tumor and adjacent noncancerous tissues from GC patients.
- Expression analysis of miR-21, MMP-2/9, and VEGF using qRT-PCR, Western blotting, and zymography.
- Computational analyses including KEGG pathway enrichment, random forest machine learning, structural equation modeling, and protein-protein interaction network analysis.
Main Results:
- Pathway analysis identified significant enrichment in MicroRNAs in cancer pathways.
- Random forest classification achieved 85.0% accuracy in discriminating tumor from normal tissues, with miR-21 as the most potent predictor.
- Structural equation modeling showed miR-21 directly impacts tumor size and indirectly via MMP-9; network analysis identified miR-21 as a central regulatory hub.
Conclusions:
- The miR-21/MMP-9/VEGF axis represents a candidate regulatory network in GC.
- miR-21 plays a central role in gastric cancer progression, suggesting it as a potential therapeutic target.
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