Nicotinamide riboside tartrate, an orally active NAD+ precursor, increases NAD+ levels and activates SIRT1 and SIRT3. Nicotinamide riboside tartrate is a source of vitamin B3 (niacin) and enhances oxidative metabolism, protection against high fat diet-induced metabolic abnormalities[1]. Nicotinamide riboside tartrate reduces cognitive deterioration in a transgenic mouse model of Alzheimer’s disease[2].
Sirt2-IN-6 (compound 24a) potent and selective inhibitor of SIRT2, with an IC50 of 0.815 μM. Sirt2-IN-6 can be used for the research of cancer[1].
SIRT5 inhibitor 7 (compound 58) is a substrate-competitive and selective SIRT5 inhibitor with anti-inflammatory activity. SIRT5 inhibitor 7 has renal protective effects and regulates protein succinylation and the release of pro-inflammatory cytokines. SIRT5 inhibitor 7 has in vivo activity in AKI mouse models of lipopolysaccharide (LPS) and cecal ligation/perforation (CLP)-induced sepsis-related acute kidney injury[1].
PROTAC Sirt2 Degrader-1 is a SirReal-based PROTAC, acts as a Sirt2 degrader, composed of a highly potent and isotype-selective Sirt2 inhibitor, a linker and thalidomide, a bona fide cereblon ligand for E3 ubiquitin ligase. PROTAC Sirt2 Degrader-1 shows an IC50 of 0.25 μM for Sirt2, with no effect on Sirt1/Sirt3 (IC50s > 100 μM)[1].
SIRT5 inhibitor 2 (compound 49) is a potent SIRT5 inhibitor with an IC50 value of 2.3 μM. SIRT5 inhibitor 2 has inhibitory activity against the SIRT5-dependent desuccinylation. SIRT5 inhibitor 2 can be used for researching cancer and neurodegenerative diseases[1].
Cudraflavone B is a prenylated flavonoid with anti-inflammatory and anti-tumor properties. Cudraflavone B is also a dual inhibitor of COX-1 and COX-2. Cudraflavone B blocks the translocation of nuclear factor κB (NF-κB) from the cytoplasm to the nucleus in macrophages. Thus, Cudraflavone B inhibits tumor necrosis factor α (TNFα) gene expression and secretion. Cudraflavone B also triggers the mitochondrial apoptotic pathway, activates NF-κB, the MAPK p38, and ERK, and induced the expression of SIRT1. Thus Cudraflavone B inhibits the growth of human oral squamous cell carcinoma cells[1][2].
Sirt1/2-IN-1 (Compound 7) is a SIRT1 and SIRT2 inhibitor with IC50 values of 1.81, 2.10 and 20.5 µg/mL against SIRT1, SIRT2 and SIRT3, respectively. Sirt1/2-IN-1 displays activity in hyperacetylation of α-tubulin protein with an IC50 of 32.05 µg/mL. Sirt1/2-IN-1 shows prominent anticancer activity[1].
3β,6α,12β-Dammar-E-20(22)-ene-3,6,12,25-tetraol, a SIRT1 activator, exhibits significant stimulation of SIRT1 activity. Anti-tumor activity[1].
Inauhzin is a dual SirT1/IMPDH2 inhibitor, and acts as an activator p53, used in the research of cancer.
SRTCX1002 (SRTCX-1002) is a small molecule activator of SIRT1 (STAC) with EC1.5 of 0.4 uM, enhances deacetylation of cellular p65 protein with IC50 of 0.84 uM in cellular p65 acetylation assay; suppresses TNFα-induced NF-κB transcriptional activation and reduction of LPS-stimulated TNFα secretion in a SIRT1-dependent manner.
Ainsliadimer C, a potential activator of SIRT1, ameliorates inflammatory responses in adipose tissue.
E1231 (E-1231) is a small molecule SIRT1 activator with EC50 of 0.83 uM, interactes with recombinant human SIRT1 protein and deacetylated liver X receptor-alpha (LXRα); increases ATP-binding cassette transporter A1 (ABCA1) expression in RAW 264.7 cells dependent on SIRT1 and LXRα, promotes cholesterol efflux and inhibited lipid accumulation in RAW 264.7 cells via SIRT1 and ABCA1; decreases total cholesterol and triglyceride levels in both serum and the liver in golden hamster hyperlipidemia models.
4'-Bromo-resveratrol is a potent and dual inhibitor Sirtuin-1 and Sirtuin-3. 4'-Bromo-resveratrol inhibits melanoma cell growth through mitochondrial metabolic reprogramming. 4'-Bromo-resveratrol imparts antiproliferative effects in melanoma cells through a metabolic reprogramming and affecting the cell cycle and apoptosis signaling[1].
Ganoderic acid D, a highly oxygenated tetracyclic triterpenoid, is the major active component of Ganoderma lucidum. Ganoderic acid D upregulates the protein expression of SIRT3 and induces the deacetylated cyclophilin D (CypD) by SIRT3. Ganoderic acid D inhibits the energy reprogramming of colon cancer cells including glucose uptake, lactate production, pyruvate and acetyl-coenzyme production in colon cancer cells[1]. Ganoderic acid D can inhibit the growth of numerous cancer cell lines and it inhibits HeLa human cervical carcinoma cells with an IC50 of 17.3 mM[2].
OSS_128167 is a selective SIRT6 inhibitor with IC50s of 89, 1578 and 751 μM for SIRT6, SIRT1 and SIRT2, respectively.
SIRT7 inhibitor 97491, a potent SIRT7 inhibitor with an IC50 of 325 nM, reduces deacetylase activity of SIRT7 in a dose-dependent manner. SIRT7 inhibitor 97491 prevents tumor progression by increasing p53 stability through acetylation at K373/382. SIRT7 inhibitor 97491 promotes apoptosis through caspase pathway.[1].
SIRT-IN-3 is a potent SIRT inhibitor, with an IC50 of 17 μM for SIRT1. SIRT-IN-3 shows about 4-fold and 14-fold selectivity for SIRT1 over SIRT2 and SIRT3, respectively (IC50 of 74 μM and 235 μM for SIRT2 and SIRT3, respectively)[1].
SirReal2 is a potent, isotype-selective Sirt2 inhibitor with an IC50 value of 140 nM and has very little effect on the activities of Sirt3-5. SirReal2 leads to tubulin hyperacetylation in HeLa cells and induces destabilization of the checkpoint protein BubR1[1].
Tenovin-6 Hydrochloride is a water soluble inhibitor of SIRT1 and SIRT2, slightly inhibits HDAC8, and is also a potent activator of p53, with IC50s of 21 μM, 10 μM, 67 μM for SirT1, SirT2, and SirT3, respectively.
MDL-800 is an activator of SIRT6 deacetylation, with an EC50 value of 10.3 µM[1].
BML-278 is a SIRT1 activator (EC150: 1 μM). BML-278 increases H3K9 methylation and inhibits H3K9 acetylation in both the paternal and maternal pronucleus. BML-278 improves early embryonic development. BML-278 arrests the cell cycle at the G1/S phase, and reduces senescence in primary human mesenchymal cells. BML-278 reduces tubulin acetylation in U937 cells. BML-278 also increases mitochondrial density in murine C2C12 myoblasts[1][2].
YM-08 (Compounds 7a) is a brain-penetrant inhibitors of SIRT2,with the IC50 of 19.9 μM. YM-08 also is inhibitor of Hsp70[1].
SRT 1720 dihydrochloride is a selective and orally active activator of SIRT1 with an EC50 of 0.10 μM, and shows less potent activities on SIRT2 and SIRT3[1].
MDL-801 is an activator of SIRT6 deacetylation, with an EC50 value of 5.7 µM[1].
Resveratrol (SRT 501), a natural polyphenol that possesses anti-oxidant, anti-inflammatory, cardioprotective, and anti-cancer properties. It has a wide spectrum of targets including mTOR, JAK, β-amyloid.
SIRT2-IN-8 is a potent SIRT2 inhibitor. SIRT2-IN-8 can be used for Huntington’s and Parkinson’s diseases research[1].
JGB1741 (ILS-JGB-1741) is a potent and specific SIRT1 activity inhibitor with an IC50 of ∼15 μM. JGB1741 is a weak SIRT2 and SIRT3 inhibitor with an all IC50>100 μM. JGB1741 increases the acetylated p53 levels leading to p53-mediated apoptosis with modulation of Bax/Bcl2 ratio, cytochrome c release and PARP cleavage. JGB1741 has the potential for breast cancer research[1].
SIRT1/2/3-IN-1 (compound 10) is a highly potent, selective and cell permeable inhibitor of SIRT1, SIRT2 and SIRT3, with IC50s of 0.54, 0.253, and 0.72 μM respectively. SIRT1/2/3-IN-1 (compound 10) can be used for research of cancer[1].
Decapeptide-12, a small oligopeptide, is a tyrosinase inhibitor that interacts with C-terminal residue of tyrosinase (Kd: 61.1 μM). Decapeptide-12 is a competitive inhibitor of mushroom tyrosinase (IC50: 40 µM). Decapeptide-12 also increases transcription of SIRT. Decapeptide-12 reduces melanin content in melanocytes. Decapeptide-12 is used for the research of melanogenesis, senescence, inflammation [1][2][3].
Salermide is an inhibitor of Sirt1 and Sirt2; can cause strong cancer-specific apoptotic cell death.