Reevaluating the Role of NAD+ in Cellular Metabolism: Uncovering New Perspectives
NAD+ (Nicotinamide adenine dinucleotide) has long been recognized as a crucial cofactor in various cellular processes, including energy metabolism and DNA repair. However, recent studies have sparked debate about the ext
NAD+ is a vital molecule that plays a central role in maintaining cellular homeostasis. As a cofactor in redox reactions, it facilitates the transfer of electrons in various biochemical pathways, including glycolysis, the citric acid cycle, and fatty acid oxidation. In addition to its energetic functions, NAD+ is also involved in DNA repair, cell signaling, and epigenetic regulation. Despite its importance, the mechanisms underlying NAD+ biosynthesis, degradation, and recycling remain poorly understood. Recent studies have shed light on the complex interplay between NAD+ and other biomolecules, such as SIRT1 and NAMPT, which regulate its levels and activity. However, the exact mechanisms by which NAD+ modulates cellular metabolism remain unclear. This review aims to provide a comprehensive overview of the current state of knowledge on NAD+ and highlight areas where further research is needed to fully understand its role in cellular metabolism.