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Published on: March 30, 2019
miR-130a-Mediated KLF3 Can Inhibit the Growth of Lung Cancer Cells
Ming-Chao Wei1, Yu-Min Wang2, Da-Wei Wang3
1Department of Thoracic Surgery, Yantai Affiliated Hospital of Binzhou Medical University, Shandong, People's Republic of China.
Background:
The role of microRNA (miR) in tumors has been reported in numerous articles. Previous studies have found that miR-130a is low expressed in lung cancer, but the related mechanism has not been fully elucidated. This study mainly explores the mechanism of miR-130a in lung cancer, so as to provide potential therapeutic targets for clinical applications.
Methods:
Quantitative real-time polymerase chain reaction (qRT-PCR) was used to detect the expression of miR-130a and KLF3 in the tissues of lung cancer patients. The miR-130a-mimics and miR-130a-inhibit were constructed. Cell proliferation, invasion, migration and apoptosis were determined by CCK-8, transwell, scratch test and flow cytometry. Western Blot was used to determine the expression of KLF3 protein in cells, and the dual-luciferase reporter to determine the relationship between KLF3 and miR-130a.
Results:
miR-130a shows low expression in NSCLC patients, while KLF3 shows high expression, exhibiting a negative correlation. The 5-year survival rate of patients with low miR-130a expression and high KLF3 expression was reduced. Cox regression analysis showed that miR-130a was an independent prognostic factor for NSCLC patients. The dual-luciferase reporter revealed that miR-130a bound to KLF3 in a targeted manner, and cell experiments showed that miR-130a could inhibit the growth of lung cancer cells by regulating the expression of KLF3.
Conclusion:
miR-130a shows low expression in lung cancer and predicts a poor prognosis. In addition, up-regulation of miR-130a can down-regulate KLF3 and inhibit the growth of lung cancer.
Insights
MicroRNA-130a is underexpressed in lung cancer, correlating with poor prognosis. Upregulating miR-130a inhibits lung cancer growth by targeting KLF3, offering a potential therapeutic strategy.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- MicroRNAs (miRNAs) play a significant role in tumor development.
- Previous research indicates reduced miR-130a expression in lung cancer, but the underlying mechanisms remain unclear.
- This study investigates the mechanism of miR-130a in lung cancer to identify potential therapeutic targets.
Purpose of the Study:
- To elucidate the role and mechanism of miR-130a in lung cancer.
- To explore miR-130a as a potential therapeutic target for lung cancer.
- To investigate the relationship between miR-130a and KLF3 in lung cancer.
Main Methods:
- Quantitative real-time polymerase chain reaction (qRT-PCR) to assess miR-130a and KLF3 expression.
- Cell proliferation, invasion, migration, and apoptosis assays (CCK-8, transwell, scratch, flow cytometry).
- Western Blot and dual-luciferase reporter assays to determine KLF3 expression and miR-130a-KLF3 interaction.
Main Results:
- miR-130a was found to be lowly expressed in non-small cell lung cancer (NSCLC) tissues, while KLF3 was highly expressed, showing a negative correlation.
- Low miR-130a and high KLF3 expression correlated with reduced 5-year survival rates in NSCLC patients.
- miR-130a directly targets KLF3, and its upregulation inhibits lung cancer cell growth by regulating KLF3.
Conclusions:
- Low miR-130a expression in lung cancer is associated with a poor prognosis.
- Upregulation of miR-130a can suppress lung cancer growth by downregulating KLF3.
- miR-130a serves as an independent prognostic factor and a potential therapeutic target for NSCLC.
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