glioblastoma is the most common and the most lethal primary brain cancer. this malignancy is highly locally invasive, rarely metastatic and resistant to current therapies. little is known about the distinct molecular biology of glioblastoma multiforme (gbm) in terms of initiation and progression. so far, several molecular mechanisms have been suggested to implicate in gbm development. homeodoma...

Glioblastoma is a malignant brain tumor that is difficult to completely cure by surgical treatment alone. However, resistance to anticancer drugs and radiation may be acquired during treatment. For instance, miRNAs involved in regulating the expression of genes inducing apoptosis and other specific genes have been proposed for use, in order to induce the apoptosis of radioresistant cancer cells...

EGCG is a flavonoid that exhibited therapeutic activity in cancer. In this study three glioblastoma cell lines (U87, A172 and U251) were treated with EGCG, tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) or the combination of both. Treatment with subtoxic doses of EGCG in combination with TRAIL induces rapid apoptosis in TRAIL-resistant glioma cells, suggesting that this combine...

Human platelet-derived growth factor (PDGF) B chain is a cellular homologue of v-sis, closely involved in cell growth and oncogenicity. Analysis in this study showed the importance of not only the region near the TATAA box but also the fragment -355 bases or more upstream in the expression of the PDGF-B chain gene. However, tissue specificity was not clear in the 5' upstream region alone, and r...

To determine the possible effect of hypergravity to modify the signal transduction of ionizing radiation, we analyzed the accumulation of p53 and the expression of p53-dependent genes, Waf-1 and Bax, using the western blot analysis. Hypergravity (20 x g) induced the accumulation of p53 in the human glioblastoma cell line A172 after 3 h of incubation. Low-dose (0.5 Gy) irradiation to the cells a...