MiR-433 inhibits cell invasion of glioblastoma via direct targeting TRPM8 based on bioinformatic analysis and experimental validation.

Understanding the essential role of miRNA in regulating cell invasion in glioblastoma opens up new avenues for targeted therapeutic interventions in the future. By screening out eligible miRNA expression data sets from the GEO database, the WGCNA package based on the R language is further used to construct a co-expression network model of the chip data set, to identify modules related to disease states and perform pivotal miRNA screening on the related modules. The target relationship between miRNA and TRPM8 was verified by bioinformatics and luciferase gene report, and the effect of miRNA overexpression on TRPM8 protein level was analyzed by Western blot. The result of miR-433 overexpression on the invasion ability of glioblastoma cells in vitro was examined by scratch test and Transwell invasion test. The results of this study indicate that the selected target miR-433 has a strong binding relationship with TRPM8 and can effectively regulate its expression. Furthermore, overexpression of miR-433 was found to inhibit the invasion ability of glioblastoma cells by targeting TRPM8. These data demonstrate that miR-433 can target TRPM8 to inhibit glioblastoma cell invasion.