BRD7-Mediated miR-3148 Inhibits Progression of Cervical Cancer by Targeting Wnt3a/β-Catenin Pathway

Area of Science:

• Oncology
• Molecular Biology
• Genetics

Background:

• MicroRNAs (miRNAs) play crucial roles in tumor development, but their specific functions and mechanisms in many cancers, including cervical cancer, remain incompletely understood.
• Identifying novel miRNAs and elucidating their regulatory pathways are essential for advancing cancer diagnostics and therapeutics.

Purpose of the Study:

• To investigate the role and mechanism of miR-3148 in cervical cancer.
• To identify upstream regulators and downstream targets of miR-3148 in cervical cancer cells.

Main Methods:

• Quantitative real-time PCR to assess miR-3148 expression.
• Cell proliferation assays and apoptosis assays to evaluate the functional role of miR-3148.
• Western blotting and luciferase reporter assays to explore the regulatory mechanism at transcriptional and post-transcriptional levels.

Main Results:

• miR-3148 was found to be downregulated in cervical cancer.
• Upregulation of miR-3148 inhibited cervical cancer cell proliferation and induced apoptosis, confirming its tumor suppressor function.
• Bromodomain containing 7 (BRD7) was identified as a transcriptional activator of miR-3148.
• miR-3148 directly targets Wnt3a mRNA, inhibiting Wnt3a expression and subsequently suppressing the Wnt3a/β-catenin signaling pathway.

Conclusions:

• miR-3148 functions as a tumor suppressor in cervical cancer.
• The BRD7/miR-3148/Wnt3a/β-catenin axis represents a critical regulatory pathway in cervical cancer progression.
• This pathway offers a potential target for novel therapeutic strategies in cervical cancer treatment.