miRNA-296-5p functions as a potential tumor suppressor in human osteosarcoma by targeting SND1

Background: The pathogenesis of osteosarcoma (OS) is still unclear, and it is still necessary to find new targets and drugs for anti-OS. This study aimed to investigate the role and mechanism of the anti-OS effects of miR-296-5p. Methods: We measured the expression of miR-296-5p in human OS cell lines and tissues. The effect of miR-296-5p and its target gene staphylococcal nuclease and tudor domain containing 1 on proliferation, migration, and invasion of human OS lines was examined. The Student's t test was used for statistical analysis. Results: We found that microRNA (miR)-296-5p was significantly downregulated in OS cell lines and tissues (control vs. OS, 1.802 +/- 0.313 vs. 0.618 +/- 0.235, t = 6.402, P < 0.01). Overexpression of miR-296-5p suppressed proliferation, migration, and invasion of OA cells. SND1 was identified as a target of miR-296-5p by bioinformatic analysis and dual-luciferase reporter assay. Overexpression of SND1 abrogated the effects induced by miR-296-5p upregulation (miRNA-296-5p vs. miRNA-296-5p + SND1, 0.294 +/- 0.159 vs. 2.300 +/- 0.277, t = 12.68, P = 0.003). Conclusion: Our study indicates that miR-296-5p may function as a tumor suppressor by targeting SND1 in OS.

Automated summary

The study revealed that miR-296-5p acts as a tumor suppressor in OS by targeting SND1, providing a potential novel therapeutic target for OS treatment.