miR-758-3p suppresses human bladder cancer cell proliferation, migration and invasion by targeting NOTCH2

Area of Science:

• Oncology
• Molecular Biology
• Genetics

Background:

• MicroRNAs (miRs) are key regulators of tumor development.
• miR-758-3p is known to suppress hepatocellular carcinoma progression.
• The role of miR-758-3p in bladder cancer (BC) remains uninvestigated.

Purpose of the Study:

• To investigate the role and mechanism of miR-758-3p in bladder cancer (BC).
• To determine if miR-758-3p can suppress BC cell proliferation, migration, and invasion.

Main Methods:

• Analysis of miR-758-3p expression in BC tissues and cell lines.
• In vitro assays using miR-758-3p mimics and inhibitors in BC cells.
• Luciferase reporter assays to identify direct target genes.
• Western blot and qRT-PCR to assess target gene expression.
• Rescue experiments with NOTCH2 overexpression.

Main Results:

• miR-758-3p was significantly downregulated in BC tissues and cell lines.
• Overexpression of miR-758-3p suppressed BC cell proliferation, migration, and invasion.
• Notch receptor 2 (NOTCH2) was identified as a direct target of miR-758-3p.
• miR-758-3p mimics reduced NOTCH2 mRNA and protein levels.
• NOTCH2 overexpression reversed the inhibitory effects of miR-758-3p.

Conclusions:

• miR-758-3p acts as a tumor suppressor in bladder cancer (BC).
• miR-758-3p inhibits BC cell proliferation, migration, and invasion by targeting NOTCH2.
• This miR-758-3p/NOTCH2 axis represents a potential therapeutic target for BC.