Nicotinamide adenine dinucleotide (NAD⁺) is a critical coenzyme present in all living cells, with a molecular weight of 663.43 Da and the molecular formula C₂₁H₂₇N₇O₁₄P₂. NAD⁺ functions as an essential electron carrier in redox reactions and serves as a substrate for several enzyme families including sirtuins (SIRT1-7), poly(ADP-ribose) polymerases (PARPs), and CD38/CD157 ectoenzymes. These enzymatic interactions position NAD⁺ at the intersection of cellular metabolism, genomic stability, and mitochondrial function research.
In vitro studies demonstrate that NAD⁺ availability directly influences sirtuin-mediated deacetylation activity. SIRT1 activation in cell culture models has been associated with enhanced mitochondrial biogenesis through PGC-1α deacetylation, while SIRT3 activity in isolated mitochondrial preparations correlates with improved electron transport chain efficiency. Preclinical research has identified declining NAD⁺ concentrations as a feature of cellular senescence models, with supplementation restoring measurable enzymatic activity in aged cell populations.
PARP-1 utilizes NAD⁺ as a substrate during DNA damage response signaling. In irradiated cell models, NAD⁺ depletion has been observed to impair base excision repair capacity, while NAD⁺ repletion May be relevant toPARP-mediated poly(ADP-ribosyl)ation. This positions NAD⁺ as a compound of significant interest in DNA repair and genomic stability research.
Metabolic research represents another major application area. In adipocyte and hepatocyte cell models, NAD⁺ availability has been shown to influence fatty acid oxidation rates, glucose uptake, and AMPK pathway activation. Mitochondrial membrane potential assays in neuronal cell lines have demonstrated sensitivity to NAD⁺ concentration, supporting research applications in neurodegenerative disease modeling.
Erosyn Labs provides NAD⁺ as a high-purity lyophilized preparation at ≥99% purity verified by HPLC and enzymatic activity assay. Each lot includes a comprehensive Certificate of Analysis. The compound is hygroscopic and light-sensitive; storage at -20°C in desiccated, light-protected conditions is recommended. For reconstitution, sterile phosphate-buffered saline (pH 7.4) or purified water is suitable. Reconstituted solutions should be aliquoted to minimize freeze-thaw cycles and stored at 2–8°C for short-term use or -20°C for extended storage. All handling should occur under aseptic laboratory conditions.
For research and laboratory use only. Not for human consumption.
