RNU12 inhibits gastric cancer progression via sponging miR-575 and targeting BLID

Area of Science:

• Oncology
• Molecular Biology
• Genetics

Background:

• Gastric cancer (GC) remains a leading cause of cancer mortality with a poor 5-year survival rate.
• Long noncoding RNAs (lncRNAs) are implicated in tumor progression, but the role of RNU12 in GC is not fully understood.

Purpose of the Study:

• To investigate the functional role of RNU12 in gastric cancer.
• To elucidate the molecular mechanism by which RNU12 affects GC progression.
• To explore the potential of the RNU12/miR-575/BLID axis as diagnostic and therapeutic targets in GC.

Main Methods:

• Quantitative reverse transcription PCR (qRT-PCR) for RNU12 expression analysis in GC tissues and cell lines.
• In vitro assays including MTT, colony formation, flow cytometry, wound healing, and Transwell invasion assays to assess cell proliferation, cell cycle, migration, and invasion.
• Western blotting to analyze gene expression related to proliferation and migration.
• RNA immunoprecipitation (RIP), biotinylated RNA pull-down, and dual luciferase reporter assays to determine molecular interactions.
• In vivo studies using a zebrafish model to evaluate proliferation and migration.

Main Results:

• RNU12 expression was quantified in 113 paired GC tissues and adjacent normal tissues.
• Overexpression and knockdown of RNU12 demonstrated its inhibitory effect on GC cell proliferation, migration, and invasion.
• RNU12 was found to inhibit proliferation, invasion, and metastasis by sponging miR-575 and regulating downstream BLID, modulating epithelial-mesenchymal transition (EMT).

Conclusions:

• The RNU12/miR-575/BLID axis plays a crucial role in inhibiting gastric cancer progression.
• This axis represents a promising avenue for developing novel prognostic biomarkers and therapeutic strategies for gastric cancer.