Moreover,we also tested the effect of PTE on apoptosis-related proteins (including Caspase 3 and 9, PARP-1, Bax, Bcl-2 and Survivin) after treated for 24 h, 48 h, 72 h in T98G and LN18 glioma cells. The gene discussed is PARP1; the disease is central nervous system cancer.