sirt1 activator 1

SIRT1 Activator 1 (Compound 3), a marine-derived xyloallenoide A derivative from the Xylaria sp. mangrove fungus, exhibits angiogenic effects in zebrafish and protects human endothelial progenitor cells (hEPCs) from AngII-induced senescence. It achieves this by elevating SIRT1 expression and modulating the AMPK Akt signaling pathway [1].

SRT 2183 is a selective activator of Sirtuin-1 (SIRT1, EC1.5 : 0.36 μM).

CAY10602 is a SIRT1 activator derived from high throughput screening for compounds that enhance SIRT1-mediated deacetylation of a SIRT1-specific substrate. Functional assays indicate that CAY10602 dose-dependently suppresses NF-κB-dependent induction of TNF-α by lipopolysaccharide in THP-1 cells, achieving approximately 75% inhibition at 60 μM without cytotoxicity.

KL1333 (NQO1 activator 1) enhances energy metabolism and mitochondrial dysfunction in MELAS fibroblasts. Elevated NAD+ levels trigger the activation of SIRT1 and AMPK, and subsequently activates PGC-1α. NQO1 activator 1 is an orally available NAD+ modulator. It reacts with NAD(P)H: NQO1 as a substrate, resulting in increases in intracellular NAD+ levels via NADH oxidation.

SIRT1-A2 is a SIRT1 activator.

Sirtuins (SIRTs) represent a distinct class of trichostatin A-insensitive lysyl-deacetylases (class III HDACs). Human SIRT1 is the homolog of yeast silent information regulator 2 (Sir2) and has been shown to regulate the activity of the p53 tumor suppressor and inhibit apoptosis. Small molecule activators of SIRT1, such as resveratrol, extend lifespan in yeast and C. elegans in a manner that resembles caloric restriction. CAY10591 has been identified as an activator of the enzyme SIRT1. This compound increases fluorescence by 233% in a SIRT1 activity assay. [Activator activity was defined as the percentage of signal increase relative to signal window in the following formula: 100 x (Sample - Signallow)/(Signalhigh - Signallow)]. CAY10591 suppresses TNF-α in a dose-dependent manner. In THP-1 cells, TNF-α levels decreased from 325 pg/ml (control) to 104 and 53 pg/ml with 20 and 60 µM CAY10591, respectively. This activator also has a significant dose-dependent effect on fat mobilization in differentiated adipocytes, which would indicate the potential of SIRT1 activators for anti-obesity or anti-diabetic purposes.

HMS607P03 is an activator of SIRT1 which induces autophagic cell death via the AMPK-mTOR-ULK complex and induces mitophagy by the SIRT1-PINK1-Parkin pathway. HMS607P03 downregulates 14-3-3γ, catalase, profilin-1, and HSP90α.

BML-278 is a SIRT1 activator with an EC150 of 1 μM. It increases H3K9 methylation and inhibits H3K9 acetylation in parental and maternal prokaryotes, improving early embryonic development. BML-278 induces cell cycle arrest at the G1 S phase in primary human mesenchymal stromal cells, delaying senescence. It also reduces microtubule protein acetylation in U937 cells and increases mitochondrial density in mouse C2C12 myoblasts.

Tenovin-6 Hydrochloride is an SIRT1, SIRT2 and HDAC8 inhibitor(IC50s of 21 μM, 10 μM, and 67 μM for SirT1, SirT2, and SirT3, respectively), and is also a potent p53 activator .