Research Article

Identifying G6PC3 as a Potential Key Molecule in Hypoxic Glucose Metabolism of Glioblastoma Derived from the Depiction of 18F-Fluoromisonidazole and 18F-Fluorodeoxyglucose Positron Emission Tomography

Figure 1

Schematic for the metabolic trapping of fluorodeoxyglucose in tumor cells. Fluorine-18-fluorodeoxyglucose (18F-FDG) is accumulated in tumor cells via glucose transporter and is phosphorylated by hexokinase (HK). Glucose-6-phosphatase counteracts HK phosphorylation. Glucose-6-phosphate is consumed for energy production although FDG is not metabolized. G6P: glucose-6-phosphate; G6Pase: glucose-6-phosphatase; HK: hexokinase; TCA: tricarboxylic acid; 18F-FDG: fluorine-18-fluorodeoxyglucose; 18F-FDG6P: fluorine-18-fluorodeoxyglucose-6-phosphate.