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| Formula | C25H23N7OS |
| Molar mass | 469.57 g·mol−1 |
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SRT-1720 is an experimental drug that was studied by Sirtris Pharmaceuticals intended as a small-molecule activator of the sirtuin subtype SIRT1. The compound has been studied in animals, but safety and efficacy in humans have not been established.
In animal models of obesity and diabetes SRT1720 was found to improve insulin sensitivity and lower plasma glucose levels in fat, muscle and liver tissue, and increase mitochondrial and metabolic function. [1] In mice rendered obese and diabetic by feeding a high-fat, high-sugar diet, a study performed at the National Institute of Aging found that feeding chow infused with the highest dose of SRT1720 beginning at one year of age increased mean lifespan by 18%, and maximum lifespan by 5%, as compared to other short-lived obese, diabetic mice; however, treated animals still lived substantially shorter lives than normal-weight mice fed normal chow with no drug. [2] In a later study, SRT1720 increased mean lifespan of obese, diabetic mice by 21.7%, similar to the earlier study, but there was no effect on maximum lifespan in this study. [3] In normal-weight mice fed a standard rodent diet, SRT1720 increased mean lifespan by just 8.8%, and again had no effect on maximum lifespan. [3]
Since the discovery of SRT1720, the claim that this compound is a SIRT1 activator has been questioned [4] [5] [6] and further defended. [7] [8]
Although SRT1720 is not currently undergoing clinical development, a related compound, SRT2104, reached Phase II human trials for metabolic diseases. [9]
Isoleucine (symbol Ile or I) is an α-amino acid that is used in the biosynthesis of proteins. It contains an α-amino group (which is in the protonated −NH+3 form under biological conditions), an α-carboxylic acid group (which is in the deprotonated −COO− form under biological conditions), and a hydrocarbon side chain with a branch (a central carbon atom bound to three other carbon atoms). It is classified as a non-polar, uncharged (at physiological pH), branched-chain, aliphatic amino acid. It is essential in humans, meaning the body cannot synthesize it. Essential amino acids are necessary in the human diet. In plants isoleucine can be synthesized from threonine and methionine. In plants and bacteria, isoleucine is synthesized from pyruvate employing leucine biosynthesis enzymes. It is encoded by the codons AUU, AUC, and AUA.
Resveratrol (3,5,4′-trihydroxy-trans-stilbene) is a stilbenoid, a type of natural phenol, and a phytoalexin produced by several plants in response to injury or when the plant is under attack by pathogens, such as bacteria or fungi. Sources of resveratrol in food include the skin of grapes, blueberries, raspberries, mulberries, and peanuts.
Nicotinamide adenine dinucleotide (NAD) is a coenzyme central to metabolism. Found in all living cells, NAD is called a dinucleotide because it consists of two nucleotides joined through their phosphate groups. One nucleotide contains an adenine nucleobase and the other, nicotinamide. NAD exists in two forms: an oxidized and reduced form, abbreviated as NAD+ and NADH (H for hydrogen), respectively.
Calorie restriction mimetics (CRM), also known as energy restriction mimetics, are a hypothetical class of dietary supplements or drug candidates that would, in principle, mimic the substantial anti-aging effects that calorie restriction (CR) has on many laboratory animals and humans. CR is defined as a reduction in calorie intake of 20% to 50% without incurring malnutrition or a reduction in essential nutrients. An effective CRM would alter the key metabolic pathways involved in the effects of CR itself, leading to preserved youthful health and longer lifespan without the need to reduce food intake. The term was coined by Lane, Ingram, Roth of the National Institute on Aging in a seminal 1998 paper in the Journal of Anti-Aging Medicine, the forerunner of Rejuvenation Research. A number of genes and pathways have been shown to be involved with the actions of CR in model organisms and these represent attractive targets for drug discovery and for developing CRM. However, no effective CRM have been identified to date.
Sirtuins are a family of signaling proteins involved in metabolic regulation. They are ancient in animal evolution and appear to possess a highly conserved structure throughout all kingdoms of life. Chemically, sirtuins are a class of proteins that possess either mono-ADP-ribosyltransferase or deacylase activity, including deacetylase, desuccinylase, demalonylase, demyristoylase and depalmitoylase activity. The name Sir2 comes from the yeast gene 'silent mating-type information regulation 2', the gene responsible for cellular regulation in yeast.
Leonard Pershing Guarente is an American biologist best known for his research on life span extension in the budding yeast Saccharomyces cerevisiae, roundworms, and mice. He is a Novartis Professor of Biology at the Massachusetts Institute of Technology.
David Andrew Sinclair is an Australian-American biologist and academic known for his research on aging and epigenetics. Sinclair is a professor of genetics at Harvard Medical School and is the co-director of its Paul F. Glenn Center for Biology of Aging Research. He is the president of the non-profit Academy for Health & Lifespan Research and an officer of the Order of Australia (AO).
Sirtuin 1, also known as NAD-dependent deacetylase sirtuin-1, is a protein that in humans is encoded by the SIRT1 gene.
Sirtuin 6 is a stress responsive protein deacetylase and mono-ADP ribosyltransferase enzyme encoded by the SIRT6 gene. In laboratory research, SIRT6 appears to function in multiple molecular pathways related to aging, including DNA repair, telomere maintenance, glycolysis and inflammation. SIRT6 is member of the mammalian sirtuin family of proteins, which are homologs to the yeast Sir2 protein.
Fibroblast growth factor 21 is a protein that in mammals is encoded by the FGF21 gene. The protein encoded by this gene is a member of the fibroblast growth factor (FGF) family and specifically a member of the endocrine subfamily which includes FGF23 and FGF15/19. FGF21 is the primary endogenous agonist of the FGF21 receptor, which is composed of the co-receptors FGF receptor 1 and β-Klotho.
Sirtris Pharmaceuticals, Inc. was a biotechnology company based in Cambridge, MA that developed therapies for type 2 diabetes, cancer, and other diseases. Conceived in 2004 by Harvard University biologist David Sinclair and Andrew Perlman, and founded that year by Sinclair and Perlman, along with Christoph Westphal, Richard Aldrich, Richard Pops, and Paul Schimmel, the company was focused on developing Sinclair's research into activators of sirtuins, work that began in the laboratory of Leonard P. Guarente where Sinclair worked as a post-doc before starting his own lab.
Sirtuin-activating compounds (STAC) are chemical compounds having an effect on sirtuins, a group of enzymes that use NAD+ to remove acetyl groups from proteins. They are caloric restriction mimetic compounds that may be helpful in treating various aging-related diseases.
Christoph Westphal is an American biomedical businessman.
SRT-2183 is a drug in development by Sirtris Pharmaceuticals intended as a small-molecule activator of the sirtuin subtype SIRT1. It has similar activity in animal studies to another SIRT1 activator SRT-1720, but is closer in potency to resveratrol. In animal studies it was found to improve insulin sensitivity and lower plasma glucose levels in fat, muscle and liver tissue, and increased mitochondrial and metabolic function. However, the claim that SRT-2183 is a SIRT1 activator has been questioned and further defended.
SRT-1460 is a drug in development by Sirtris Pharmaceuticals intended as a small-molecule activator of the sirtuin subtype SIRT1. It has similar activity in animal studies to the known SIRT1 activator resveratrol, but is closer in potency to SRT-1720. In animal studies it was found to improve insulin sensitivity and lower plasma glucose levels in fat, muscle and liver tissue, and increased mitochondrial and metabolic function. However, the claim that SRT1460 is a SIRT1 activator has been questioned and further defended.
MicroRNA 34a (miR-34a) is a MicroRNA that in humans is encoded by the MIR34A gene.
AdipoRon is a selective, orally active, synthetic small-molecule agonist of the adiponectin receptor 1 (AdipoR1) and adiponectin receptor 2 (AdipoR2). It activates AMPK and PPARα signaling and ameliorates insulin resistance, dyslipidemia, and glucose intolerance in db/db mice. Moreover, AdipoRon has been found to extend the lifespans of db/db mice fed a high-fat diet, as well as improve exercise endurance. The compound was discovered by Japanese researchers in 2013 via screening of a compound library, and is the first orally active, small-molecule agonist of the adiponectin receptors to be identified.
SRT-2104 is an experimental drug that was studied by Sirtris Pharmaceuticals as a small-molecule activator of the sirtuin subtype SIRT1. The compound progressed to Phase II human trials for Type II diabetes before development was discontinued, however it continues to be widely used in animal research into the functions of SIRT1.
SRT-3025 is an experimental drug that was studied by Sirtris Pharmaceuticals as a small-molecule activator of the sirtuin subtype SIRT1. It has been investigated as a potential treatment for osteoporosis, and anemia.
STAC-9 is an experimental drug that was developed by GlaxoSmithKline as a small-molecule activator of the sirtuin subtype SIRT1, with potential applications in the treatment of diabetes.
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