sirt

Fisetin belongs to a group of natural flavonols with a variety of biological activities, including anti-inflammatory, antioxidant, anti-tumor, anti-aging and neuroprotective effects.

Salvianolic acid B is a water-soluble antioxidant from Salvia extract. Salvianolic acid B plays significant role of antioxidant effect; antiplatelet aggregation, anticoagulant, and antithrombotic effect.

Nicotinamide, a vitamin B3 derivative, is an inhibitor of SIRT1 (IC50=50-180 μM) and SIRT2 (IC50=2 μM). Nicotinamide can be used as a precursor of nicotinamide adenine dinucleotide or NAD+, which can be supplemented by dietary intake and can prevent or treat melanoglossia and pellagra.

Resveratrol (SRT 501) is a polyphenolic natural product, a plant antitoxin with antioxidant and chemopreventive activities. Resveratrol has a wide range of targets including COX, SIRT, LOC, etc. Resveratrol induces autophagy and apoptosis.

N-Caffeoyltryptophan (trans-Caffeoyl-L-tryptophan), a potential Sirt inhibitor, is screened using coffee extract. N-Caffeoyltryptophan inhibited Sirt2 (IC50; 8.7 μM) better than Sirt1(IC50; 34μM).