Journal
METABOLITES
Volume 12, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/metabo12070630
Keywords
NAD(+); vitamin B3; nicotinamide riboside; niacin
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The last decade has witnessed a rise in therapeutic strategies aimed at increasing cellular NAD(+) bioavailability for the treatment of metabolic and age-related diseases. Among these strategies, dietary supplementation with NAD(+) precursors, commonly known as vitamin B3, has received significant attention. Various molecules can serve as NAD(+) precursors through different biosynthetic pathways, and eukaryotic organisms have evolved the ability to utilize all of these molecules, even those that are rare in nature. This suggests that different NAD(+) precursors may have specialized purposes.
The last decade has seen a strong proliferation of therapeutic strategies for the treatment of metabolic and age-related diseases based on increasing cellular NAD(+) bioavailability. Among them, the dietary supplementation with NAD(+) precursors-classically known as vitamin B3-has received most of the attention. Multiple molecules can act as NAD(+) precursors through independent biosynthetic routes. Interestingly, eukaryote organisms have conserved a remarkable ability to utilize all of these different molecules, even if some of them are scarcely found in nature. Here, we discuss the possibility that the conservation of all of these biosynthetic pathways through evolution occurred because the different NAD(+) precursors might serve specialized purposes.
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