Long Noncoding RNA GUSBP11 Knockdown Alleviates Nasopharyngeal Carcinoma via Regulating miR-1226-3p/TM9SF4 Axis

Area of Science:

• Oncology
• Molecular Biology
• Genetics

Background:

• Long noncoding RNAs (lncRNAs) are implicated in various cancers, including nasopharyngeal carcinoma (NPC).
• Understanding the role of specific lncRNAs like GUSBP11 in NPC progression is crucial for developing targeted therapies.

Purpose of the Study:

• To investigate the functional role of GUSBP11 in nasopharyngeal carcinoma (NPC) progression.
• To elucidate the underlying molecular mechanisms involving GUSBP11, miR-1226-3p, and TM9SF4 in NPC.

Main Methods:

• Quantitative real-time PCR (RT-qPCR) to assess GUSBP11 expression in NPC tissues and cells.
• Cell proliferation and migration assays (CCK-8, colony formation, Transwell) to evaluate GUSBP11's functional impact.
• Dual-luciferase reporter assays to confirm interactions between GUSBP11, miR-1226-3p, and TM9SF4.

Main Results:

• GUSBP11 expression was significantly upregulated in NPC tissues and cells.
• Downregulation of GUSBP11 suppressed NPC cell proliferation and metastasis.
• GUSBP11 was found to directly target and negatively regulate miR-1226-3p.
• miR-1226-3p was confirmed to target TM9SF4, mediating GUSBP11's effect on TM9SF4 levels.

Conclusions:

• The GUSBP11/miR-1226-3p/TM9SF4 axis plays a critical role in regulating NPC progression.
• Downregulation of GUSBP11 alleviates NPC development by modulating the miR-1226-3p/TM9SF4 pathway.
• Targeting the GUSBP11/miR-1226-3p/TM9SF4 axis presents a potential therapeutic strategy for NPC.