Sirtuins are a family of NAD⁺-dependent deacylases comprising SIRT1–7 and are involved in metabolism, DNA repair, mitochondrial homeostasis, and inflammatory regulation. Animal studies suggest that certain members may improve healthspan, but there is currently no direct evidence that they can ...
Aging involves persistent dysregulation of nutrient sensing, energy metabolism, protein homeostasis, and chronic inflammation. IIS, mTOR, AMPK, NF-κB, and Sirtuins are interconnected through nodes including AKT, FOXO, ULK1, and NAD⁺ and jointly regulate cell growth, autophagy, stress adaptation, ...
NAD (nicotinamide adenine dinucleotide, Nicotinamide Adenine Dinucleotide), also known as Coenzyme I, is composed of nicotinamide, adenine, and two ribose units linked via a phosphodiester bond. It forms a reversible redox pair as oxidized NAD⁺ and reduced NADH, serving as an electron carrier in ...