Long noncoding RNA ARRDC1-AS1 is activated by STAT1 and exerts oncogenic properties by sponging miR-432-5p/PRMT5 axis in glioma

Dysfunction of long noncoding RNA (lncRNA) is associated with tumorigenesis of various malignancies, including glioma. Previously, lncRNA ARRDC1 antisense RNA 1(ARRDC1-AS1) has been reported to be dysregulated in several tumors. However, the roles of ARRDC1-AS1 in glioma have not been investigated. In this study, we firstly reported that ARRDC1-AS1 expression was distinctly increased in both glioma specimens and cell lines, and high ARRDC1-AS1 expression was associated with advanced clinical progression and poor prognosis of glioma patients. Additionally, STAT1 could activate the transcription of ARRDC1-AS1. Functional studies revealed that knockdown of ARRDC1-AS1 suppressed the proliferation, migration and invasion of glioma cells. Mechanisms exploration indicated ARRDC1-AS1 served as a sponge of miR-432-5p to upregulate PRMT5 expressions. Rescue experiments indicated that knockdown of miR-432-5p reversed the inhibiting effects of ARRDC1-AS1 knockdown on glioma cells. Overall, our findings highlighted the importance of STAT1/ARRDC1-AS1/miR-432-5p/PRMT5 axis in glioma progression and offered novel strategies for glioma treatments.