Circ_0000527 promotes osteosarcoma cell progression through modulating miR-646/ARL2 axis.

Area of Science:

• Oncology
• Molecular Biology
• Biochemistry

Background:

• Circular RNAs (circRNAs) are increasingly recognized for their roles in human tumor development.
• Osteosarcoma is a primary bone malignancy with significant impact on young individuals.

Purpose of the Study:

• To investigate the role of circ_0000527 in osteosarcoma.
• To elucidate the molecular mechanism involving circ_0000527, miR-646, and ARL2 in osteosarcoma progression.

Main Methods:

• Quantitative real-time PCR to measure circRNA, miRNA, and mRNA levels.
• Cell proliferation and cell cycle assays.
• Western blot to detect protein expression.
• Correlation analysis in clinical osteosarcoma specimens.

Main Results:

• Circ_0000527 was significantly overexpressed in osteosarcoma tissues and cell lines.
• Circ_0000527 overexpression promoted cell growth, cell cycle progression, and secretion of inflammatory factors (IL-1β, IL-6, IL-8, TNF-α).
• Circ_0000527 acted as a sponge for miR-646, and ARL2 was identified as a target gene of miR-646. Circ_0000527 upregulated ARL2 expression by sponging miR-646.

Conclusions:

• The circ_0000527/miR-646/ARL2 axis plays a crucial role in promoting osteosarcoma cell growth, cell cycle, and inflammation.
• Targeting the circ_0000527/miR-646/ARL2 pathway represents a potential therapeutic strategy for osteosarcoma.