Nutrition and cancer
-
Nutrition and cancer · Nov 2018
Epigallocatechin Gallate Preferentially Inhibits O6-Methylguanine DNA-Methyltransferase Expression in Glioblastoma Cells Rather than in Nontumor Glial Cells.
O6-methylguanine (O6-meG) DNA-methyltransferase (MGMT) is a main regulator of temozolomide (TMZ) resistance in glioblastomas. Some MGMT inhibitors have been studied in clinical trials but with very little success, because their inhibiting effects were not tumor-selective, and often cause severe toxicity in normal tissues in the presence of TMZ. The goal of this study is to explore whether Epigallocatechin gallate (EGCG), a natural small molecule, could preferentially modulate MGMT in glioblastoma cells. ⋯ EGCG preferentially inhibits MGMT and enhances TMZ cytotoxicity in glioblastoma cells rather than in nontumor glial cells.