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Updated: Jun 16, 2026
Exosomal miRNA Analysis in Non-small Cell Lung Cancer (NSCLC) Patients' Plasma Through qPCR: A Feasible Liquid Biopsy Tool
Published on: May 27, 2016
Analysis of gene expression patterns modulated by tuberculous pleural effusion-derived exosomal miRNAs in lung cancer
Goeun Park1, Hyun-Jung Kang1, Yoonki Hong2
1Institute of New Frontier Research Team, Hallym University College of Medicine, Chuncheon, Republic of Korea.
Introduction:
Previous pulmonary tuberculosis (TB) is a known risk factor for lung cancer. Earlier studies have demonstrated that tuberculous pleural effusion (TPE)-derived exosomal miRNAs are involved in lung cancer progression. This study aimed to identify potential miRNA-mRNA regulatory pathways contributing to the pathogenesis of TB-associated lung cancer.
Methods:
We isolated Exosomes from the lung effusions of patients with TB and injected intratumorally into lung cancer xenograft mice to model the TB-lung cancer interaction. To identify TB-associated regulators relevant to lung cancer, we first examined differentially expressed miRNAs (DEMs) in exosomes from patients with TB. In parallel, we identified differentially expressed genes (DEGs) in xenograft lung cancer following injection with TB-derived exosomes and analyzed their interactions with the DEMs. Network analysis was then applied to interpret miRNA-mRNA regulatory relationships, with TB-related sub-networks selected for further study.
Results:
In total, five DEMs and 54 DEGs were identified. Pathway enrichment analysis indicated that these DEGs were linked to oxidative phosphorylation, ribosome biogenesis, mitochondrial adenosine triphosphate synthesis, and NADH dehydrogenase activity. Further network analysis with Cytoscape revealed a potential miRNA-mRNA regulatory network encompassing 94 genes expanded from the selected 54 DEGs and 4 DEMs. Finally, in vitro assays validated that the identified cancer-related genes (NDUFA4, RPS27, and COX7A2) are involved in regulating miRNA expression.
Conclusion:
In conclusion, our findings suggest potential indirect links between TB-derived exosomal miRNAs and lung cancer associated genes. These results provide a preliminary regulatory framework, and while further functional validation is warranted, they offer exploratory insights into the molecular landscape of TB-associated lung cancer.
Insights
This study reveals how exosomes from tuberculosis (TB) pleural effusions may influence lung cancer by altering gene expression. Researchers identified specific microRNAs (miRNAs) and genes involved in TB-associated lung cancer pathways.
Area of Science:
- Oncology
- Infectious Diseases
- Molecular Biology
Background:
- Previous pulmonary tuberculosis (TB) is a recognized risk factor for lung cancer development.
- Exosomal microRNAs (miRNAs) derived from tuberculous pleural effusion (TPE) have been implicated in promoting lung cancer progression.
Purpose of the Study:
- To identify potential miRNA-mRNA regulatory pathways involved in the pathogenesis of TB-associated lung cancer.
- To investigate the molecular mechanisms linking TB and lung cancer through exosomal communication.
Main Methods:
- Exosomes were isolated from TB patient lung effusions and administered to lung cancer xenograft mice.
- Differentially expressed miRNAs (DEMs) in exosomes and differentially expressed genes (DEGs) in tumors were identified.
- Network analysis was performed to elucidate miRNA-mRNA regulatory relationships.
Main Results:
- Five DEMs and 54 DEGs were identified, associated with pathways like oxidative phosphorylation and ribosome biogenesis.
- A miRNA-mRNA regulatory network involving 94 genes and 4 DEMs was constructed.
- In vitro assays confirmed the role of genes NDUFA4, RPS27, and COX7A2 in regulating miRNA expression.
Conclusions:
- Findings suggest indirect regulatory links between TB-derived exosomal miRNAs and lung cancer-associated genes.
- The study provides a preliminary framework for understanding the molecular landscape of TB-associated lung cancer.
- Further functional validation is needed to confirm these exploratory insights.
