MiR-145-5p suppresses the proliferation, migration and invasion of gastric cancer epithelial cells via the NOD_LIKE_RECEPTOR axis.

OBJECTIVE

This study aimed to investigate the relationship among miR-145-5p, and the NOD_LIKE_RECEPTOR pathway, thereby revealing the molecular mechanism of these three factors underlying the proliferation, migration and invasion of gastric cancer (GC) epithelial cells.

METHODS

qRT-PCR was carried out to detect the expression of miR-145-5p and mRNA. Western blot was performed to test the protein levels of ANGPT2 as well as NOD1, NOD2 and NF-κB in the NOD_LIKE_RECEPTOR pathway. The targeting relationship between miR-145-5p and was verified via a dual-luciferase reporter gene assay. The proliferation, migration and invasion of GC cells were detected through MTT and Transwell assays, respectively.

RESULTS

The expression of miR-145-5p was significantly down-regulated in GC cells, while that of was notably up-regulated. MiR-145-5p directly bound with the 3'-UTR of mRNA, thereby targeting after transcription. Overexpression of miR-145-5p inhibited the proliferation, migration and invasion of GC cells by suppressing . Moreover, low expression of affected the protein levels of NOD1, NOD2 and NF-κB in the NOD_LIKE_RECEPTOR pathway, thus weakening the abilities of cell proliferation, migration and invasion.

CONCLUSIONS

MiR-145-5p plays an important role in GC epithelial cells, and it can affect cell proliferation, migration and invasion of GC cells by targeting and regulating the NOD_LIKE_RECEPTOR pathway. Overall, our study further elucidates the molecular mechanism underlying the malignant progression of GC.