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MiR-582-5p Inhibits Bladder Cancer-Genesis by Suppressing TTK Expression
Yudong Tian1, Yanbin Guan2, Yang Su1
1Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, Henan, People's Republic of China.
Background:
Bladder cancer (BC) refers to the malignant growth found in the cells and tissues of the urinary bladder. While many studies have researched the progression of BC, scientists are yet to fully understand the mechanism of BC. This research aimed to explore the role of miR-582-5p and its target gene TTK in BC pathogenesis.
Methods:
The evaluation of miR-582-5p and TTK mRNA expression in BC tissues or cells was performed using qRT-PCR. TargetScan was then used to predict the binding site of miR-582-5p on TTK mRNA. Subsequently, dual-luciferase reporter and RNA pull-down assays were employed to validate the binding relationship between miR-582-5p and TTK mRNA. CCK-8, BrdU, flow cytometry, and caspase-3 activity assays were later conducted to evaluate the viability, proliferation, cell cycle, and apoptosis of BC cells.
Results:
Investigations revealed that miR-582-5p was downregulated in BC tissues and cells. Meanwhile, miR-582-5p inhibited the viability and proliferation of BC cells while stimulating the apoptosis and cycle arrest of the cells. TTK, the target gene of miR-582-5p, was later found to be over-expressed in BC tissues and cells. TTK, however, was observed to exhibit an opposite effect on miR-582-5p. Simply put, it stimulated BC cell malignant phenotypes, and this stimulation could be directly reversed by miR-582-5p.
Conclusion:
This research confirmed that miR-582-5p could restrain bladder carcinogenesis by inhibiting TTK expression.
Insights
MicroRNA-582-5p (miR-582-5p) suppresses bladder cancer progression by downregulating its target gene, TTK. This finding offers a potential therapeutic target for bladder cancer treatment.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Bladder cancer (BC) is a malignancy of the urinary bladder with incompletely understood pathogenesis.
- Understanding the molecular mechanisms driving BC is crucial for developing effective treatments.
Purpose of the Study:
- To investigate the role of microRNA-582-5p (miR-582-5p) and its target gene TTK in bladder cancer pathogenesis.
- To elucidate the regulatory relationship between miR-582-5p and TTK in BC cells.
Main Methods:
- Quantitative reverse transcription polymerase chain reaction (qRT-PCR) to assess miR-582-5p and TTK mRNA expression.
- Dual-luciferase reporter and RNA pull-down assays to validate the interaction between miR-582-5p and TTK.
- Cell viability, proliferation, cell cycle, and apoptosis assays (CCK-8, BrdU, flow cytometry, caspase-3) to evaluate cellular effects.
Main Results:
- miR-582-5p was found to be downregulated in bladder cancer tissues and cells.
- miR-582-5p inhibited BC cell viability and proliferation, while promoting apoptosis and cell cycle arrest.
- TTK, a target of miR-582-5p, was overexpressed in BC and promoted malignant phenotypes, effects reversed by miR-582-5p.
Conclusions:
- miR-582-5p acts as a tumor suppressor in bladder cancer.
- Inhibition of TTK expression by miR-582-5p restrains bladder carcinogenesis.
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