Title : Caffeine Targets G6PDH to Disrupt Redox Homeostasis and Inhibit Renal Cell Carcinoma Proliferation.

Pub. Date : 2020

PMID : 33123534






8 Functional Relationships(s)
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1 Glucose-6-phosphate dehydrogenase (G6PDH) is the rate-limiting enzyme in the pentose phosphate pathway (PPP) and plays a crucial role in the maintenance of redox homeostasis by producing nicotinamide adenine dinucleotide phosphate (NADPH), the major intracellular reductant. NADP glucose-6-phosphate dehydrogenase Homo sapiens
2 Glucose-6-phosphate dehydrogenase (G6PDH) is the rate-limiting enzyme in the pentose phosphate pathway (PPP) and plays a crucial role in the maintenance of redox homeostasis by producing nicotinamide adenine dinucleotide phosphate (NADPH), the major intracellular reductant. NADP glucose-6-phosphate dehydrogenase Homo sapiens
3 Glucose-6-phosphate dehydrogenase (G6PDH) is the rate-limiting enzyme in the pentose phosphate pathway (PPP) and plays a crucial role in the maintenance of redox homeostasis by producing nicotinamide adenine dinucleotide phosphate (NADPH), the major intracellular reductant. NADP glucose-6-phosphate dehydrogenase Homo sapiens
4 Glucose-6-phosphate dehydrogenase (G6PDH) is the rate-limiting enzyme in the pentose phosphate pathway (PPP) and plays a crucial role in the maintenance of redox homeostasis by producing nicotinamide adenine dinucleotide phosphate (NADPH), the major intracellular reductant. NADP glucose-6-phosphate dehydrogenase Homo sapiens
5 Mechanistically, caffeine directly binds to G6PDH with high affinity (K D = 0.1923 muM) and competes with the coenzyme NADP+ for G6PDH binding, as demonstrated by the decreased binding affinities of G6PDH for its coenzyme and substrate. NADP glucose-6-phosphate dehydrogenase Homo sapiens
6 Mechanistically, caffeine directly binds to G6PDH with high affinity (K D = 0.1923 muM) and competes with the coenzyme NADP+ for G6PDH binding, as demonstrated by the decreased binding affinities of G6PDH for its coenzyme and substrate. NADP glucose-6-phosphate dehydrogenase Homo sapiens
7 Molecular docking studies revealed that caffeine binds to G6PDH at the structural NADP+ binding site, and chemical cross-linking analysis demonstrated that caffeine inhibits the formation of dimeric G6PDH. NADP glucose-6-phosphate dehydrogenase Homo sapiens
8 Moreover, inhibition of G6PDH activity by caffeine led to a reduction in the intracellular levels of NADPH and reactive oxygen species (ROS), and altered the expression of redox-related proteins in RCC cells. NADP glucose-6-phosphate dehydrogenase Homo sapiens