Glutamine restores testicular glutathione dependent antioxidant defense and upregulates NO cGMP signaling in sleep deprivation induced reproductive dysfunction in rats ScienceDirect Glutamine drives glutathione synthesis and contributes to radiation sensitivity of A549 and H460 lung cancer cell lines ScienceDirect Metabolic orchestration driven by GGCT: diverting glutamine to glutathione biosynthesis while enhancing glucose anaplerosis for tumor proliferation Cell Death & Disease Critical Roles of the CysteineGlutathione Axis in the Production of Glutamyl Peptides in the Nervous System