Kumudesh Mishra1,2,*, Or Kakhlon1,2
BIOCELL, Vol.49, No.7, pp. 1101-1123, 2025, DOI:10.32604/biocell.2025.061725
- 25 July 2025
Abstract Mitochondria are central organelles in cellular metabolism, orchestrating energy production, biosynthetic pathways, and signaling networks. Nicotinamide adenine dinucleotide (NAD+) and its reduced form (NADH) are essential for mitochondrial metabolism, functioning both as redox coenzymes and as signaling agents that help regulate cellular balance. Thus, while its major role is in energy production, NAD+ is widely recognized as a metabolic cofactor and also serves as a substrate for various enzymes involved in cellular signaling, like sirtuins (SIRTs), poly (ADP-ribosyl) polymerases (PARPs), mono (ADP-ribosyl) transferases, and CD38. Sirtuins, a family of NAD+-dependent deacetylases, are critical in this regulatory network.… More >