PAQR3 inhibits the proliferation, migration and invasion in human glioma cells

Biomedicine & Pharmacotherapy = Biomédecine & Pharmacothérapie
Shi-Lei TangWen-Zhong Hu

Abstract

Progestin and AdipoQ Receptor 3 (PAQR3), a member of the PAQR family, is down-regulated in several types of cancers and has been closely associated with tumor progression and development. However, little is known about the functions of PAQR3 in the tumorigenesis of human glioma. Therefore, in this report, we investigated the role of PAQR3 in human glioma. Our results showed that the expression of PAQR3 was significantly reduced in human glioma tissues and cell lines. PAQR3 overexpression inhibited the proliferation of glioma cells in vitro and attenuated tumor xenograft growth in vivo. In addition, PAQR3 overexpression suppressed the migration and invasion of glioma cells, as well as prevented the EMT process. Mechanistic studies demonstrated that PAQR3 overexpression significantly down-regulated the levels of phosphorylated PI3K and Akt in U251 cells. In conclusion, these results demonstrated that PAQR3 inhibited the proliferation, migration and invasion in glioma cells, at least in part, through the inactivation of PI3K/Akt signaling pathway. Therefore, PAQR3 may be a therapeutic target for the treatment of glioma.

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