Teglicar
(Synonyms: 替格列卡) 目录号 : GC37754Teglicar 是选择性和可逆性的肉毒碱棕榈酰转移酶 1 (L-CPT1) 肝异构体抑制剂,可减少酮生成和葡萄糖生成,降低糖异生,改善葡萄糖稳态。Teglicar 具有潜在的抗高血糖特性。
Cas No.:250694-07-6
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Teglicar is a selective and reversible inhibitor of liver isoform of carnitine palmitoyl-transferase 1 (L-CPT1). Teglicar reduces ketogenesis and glucose production, decreases gluconeogenesis and improves glucose homeostasis. Teglicar has a potential antihyperglycemic propert[1]. IC50: L-CPT1[1]
[1]. Conti R, et al. Selective reversible inhibition of liver carnitine palmitoyl-transferase 1 by teglicar reduces gluconeogenesis and improves glucose homeostasis. Diabetes. 2011 Feb;60(2):644-51.
Cas No. | 250694-07-6 | SDF | |
别名 | 替格列卡 | ||
Canonical SMILES | O=C(N[C@H](CC([O-])=O)C[N+](C)(C)C)NCCCCCCCCCCCCCC | ||
分子式 | C22H45N3O3 | 分子量 | 399.61 |
溶解度 | Ethanol : 100 mg/mL (250.24 mM; ultrasonic and heat to 60°C); DMSO : 19 mg/mL (47.55 mM; Need ultrasonic); H2O : 10 mg/mL (25.02 mM; Need ultrasonic) | 储存条件 | Store at -20°C |
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The Reversible Carnitine Palmitoyltransferase 1 Inhibitor (Teglicar) Ameliorates the Neurodegenerative Phenotype in a Drosophila Huntington's Disease Model by Acting on the Expression of Carnitine-Related Genes
Molecules 2022 May 13;27(10):3125.PMID:35630602DOI:10.3390/molecules27103125.
Huntington's disease (HD) is a dramatic neurodegenerative disorder caused by the abnormal expansion of a CAG triplet in the huntingtin gene, producing an abnormal protein. As it leads to the death of neurons in the cerebral cortex, the patients primarily present with neurological symptoms, but recently metabolic changes resulting from mitochondrial dysfunction have been identified as novel pathological features. The carnitine shuttle is a complex consisting of three enzymes whose function is to transport the long-chain fatty acids into the mitochondria. Here, its pharmacological modification was used to test the hypothesis that shifting metabolism to lipid oxidation exacerbates the HD symptoms. Behavioural and transcriptional analyses were carried out on HD Drosophila model, to evaluate the involvement of the carnitine cycle in this pathogenesis. Pharmacological inhibition of CPT1, the rate-limiting enzyme of the carnitine cycle, ameliorates the HD symptoms in Drosophila, likely acting on the expression of carnitine-related genes.
Selective reversible inhibition of liver carnitine palmitoyl-transferase 1 by Teglicar reduces gluconeogenesis and improves glucose homeostasis
Diabetes 2011 Feb;60(2):644-51.PMID:21270274DOI:10.2337/db10-0346.
Objective: We have developed a new antihyperglycemic agent (Teglicar) through the selective and reversible inhibition of the liver isoform of carnitine palmitoyl-transferase 1 (L-CPT1). Research design and methods: Glucose production was investigated in isolated hepatocytes and during pancreatic clamps in healthy rats. Chronic treatments on C57BL/6J, db/db, high-fat fed mice, and rats were performed to understand glucose metabolism and insulin sensitivity. Results: In isolated hepatocytes, Teglicar concentration dependently reduced ketone bodies and glucose production up to 72 and 50%, respectively. In rats, Teglicar reduced the endogenous glucose production (-62%) without affecting peripheral glucose utilization. Heart 2-[(3)H]deoxyglucose uptake in mice was also not affected, confirming in vivo the drug selectivity toward L-CPT1. Chronic treatment in db/db mice (50 mg/kg/bid; 45 days) reduced postabsorptive glycemia (-38%), water consumption (-31%), and fructosamine (-30%). Such antidiabetic activity was associated with an improved insulin sensitivity assessed by the insulin tolerance test. A significant 50% increase in hepatic triglyceride content (HTGC) was found, although plasma alanineaminotransferase was not altered. In addition, long-term Teglicar administration to high-fat fed C57BL/6J mice normalized glycemia (-19%) and insulinemia (-53%). Long-term Teglicar administration (30 days, 80 mg/kg) in healthy overnight-fasted rats slightly reduced basal glycemia (-20%, ns), reduced basal insulin levels by 60%, doubled triglycerides, and increased free-fatty acids (+53%). HTGC was markedly increased, but liver and peripheral insulin sensitivity assessed by hyperinsulinemiceuglycemic clamp were not affected. Conclusions: Teglicar, in vitro and in animal models, reduces gluconeogenesis and improves glucose homeostasis, refreshing the interest in selective and reversible L-CPT1 inhibition as a potential antihyperglycemic approach.
The Fatty Acid Synthase Inhibitor Platensimycin Improves Insulin Resistance without Inducing Liver Steatosis in Mice and Monkeys
PLoS One 2016 Oct 3;11(10):e0164133.PMID:27695056DOI:10.1371/journal.pone.0164133.
Objectives: Platensimycin (PTM) is a natural antibiotic produced by Streptomyces platensis that selectively inhibits bacterial and mammalian fatty acid synthase (FAS) without affecting synthesis of other lipids. Recently, we reported that oral administration of PTM in mouse models (db/db and db/+) with high de novo lipogenesis (DNL) tone inhibited DNL and enhanced glucose oxidation, which in turn led to net reduction of liver triglycerides (TG), reduced ambient glucose, and improved insulin sensitivity. The present study was conducted to explore translatability and the therapeutic potential of FAS inhibition for the treatment of diabetes in humans. Methods: We tested PTM in animal models with different DNL tones, i.e. intrinsic synthesis rates, which vary among species and are regulated by nutritional and disease states, and confirmed glucose-lowering efficacy of PTM in lean NHPs with quantitation of liver lipid by MRS imaging. To understand the direct effect of PTM on liver metabolism, we performed ex vivo liver perfusion study to compare FAS inhibitor and carnitine palmitoyltransferase 1 (CPT1) inhibitor. Results: The efficacy of PTM is generally reproduced in preclinical models with DNL tones comparable to humans, including lean and established diet-induced obese (eDIO) mice as well as non-human primates (NHPs). Similar effects of PTM on DNL reduction were observed in lean and type 2 diabetic rhesus and lean cynomolgus monkeys after acute and chronic treatment of PTM. Mechanistically, PTM lowers plasma glucose in part by enhancing hepatic glucose uptake and glycolysis. Teglicar, a CPT1 inhibitor, has similar effects on glucose uptake and glycolysis. In sharp contrast, Teglicar but not PTM significantly increased hepatic TG production, thus caused liver steatosis in eDIO mice. Conclusions: These findings demonstrate unique properties of PTM and provide proof-of-concept of FAS inhibition having potential utility for the treatment of diabetes and related metabolic disorders.
Hepatic synthesis of triacylglycerols containing medium-chain fatty acids is dominated by diacylglycerol acyltransferase 1 and efficiently inhibited by etomoxir
Mol Metab 2021 Mar;45:101150.PMID:33359403DOI:10.1016/j.molmet.2020.101150.
Objective: Medium-chain fatty acids (MCFAs) play an increasing role in human nutrition. In the liver, one fraction is used for synthesis of MCFA-containing triacylglycerol (MCFA-TG), and the rest is used for oxidative energy production or ketogenesis. We investigated which enzymes catalyse the synthesis of MCFA-TG and how inhibition of MCFA-TG synthesis or fatty acid (FA) oxidation influences the metabolic fate of the MCFAs. Methods: FA metabolism was followed by time-resolved tracing of alkyne-labelled FAs in freshly isolated mouse hepatocytes. Quantitative data were obtained by mass spectrometry of several hundred labelled lipid species. Wild-type hepatocytes and cells from diacylglycerol acyltransferase (DGAT)1-/- mice were treated with inhibitors against DGAT1, DGAT2, or FA β-oxidation. Results: Inhibition or deletion of DGAT1 resulted in a reduction of MCFA-TG synthesis by 70%, while long-chain (LC)FA-TG synthesis was reduced by 20%. In contrast, DGAT2 inhibition increased MCFA-TG formation by 50%, while LCFA-TG synthesis was reduced by 5-25%. Inhibition of β-oxidation by the specific inhibitor Teglicar strongly increased MCFA-TG synthesis. In contrast, the widely used β-oxidation inhibitor etomoxir blocked MCFA-TG synthesis, phenocopying DGAT1 inhibition. Conclusions: DGAT1 is the major enzyme for hepatic MCFA-TG synthesis. Its loss can only partially be compensated by DGAT2. Specific inhibition of β-oxidation leads to a compensatory increase in MCFA-TG synthesis, whereas etomoxir blocks both β-oxidation and MCFA-TG synthesis, indicating a strong off-target effect on DGAT1.