PI3K/mTORC1/2 inhibitor PQR309 inhibits proliferation and induces apoptosis in human glioblastoma cells.

PI3K/mTORC1/2 inhibitor PQR309 inhibits proliferation and induces apoptosis in human glioblastoma cells. Oncol Rep. 2020 Jan 20;: Authors: Yang K, Tang XJ, Xu FF, Liu JH, Tan YQ, Gao L, Sun Q, Ding X, Liu BH, Chen QX Abstract Glioblastoma (GBM) is the most common type of primary central nervous system tumor in adults, which has high mortality and morbidity rates, and short survival time, namely <15 months after the diagnosis and application of standard therapy, which includes surgery, radiation therapy and chemotherapy; thus, novel therapeutic strategies are imperative. The activation of the PI3K/AKT signaling pathway plays an important role in GBM. In the present study, U87 and U251 GBM cells were treated with the PI3K/mTORC1/2 inhibitor PQR309, and its effect on glioma cells was investigated. Cell Counting Kit‑8 assay, 5‑ethynyl‑2'‑deoxyuridine and colony formation assays revealed dose‑ and time‑dependent cytotoxicity in glioma cells that were treated with PQR309. Flow cytometry and western blotting revealed that PQR309 can significantly induce tumor cell apoptosis and arrest the cell cycle in the G1 phase. Furthermore, the expression levels of AKT, phosphorylated (p)‑AKT, Bcl‑2, Bcl‑xL, Bad, Bax, cyclin D1, cleaved caspase‑3, MMP‑9 and MMP‑2 were altered. In addition, the migration and invasion of glioma cells, as detected by wound healing, migration and Transwell invasion assays, exhibited a marked sup...
Source: Oncology Reports - Category: Cancer & Oncology Tags: Oncol Rep Source Type: research