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Wagner BK. Small-molecule discovery in the pancreatic beta cell. Curr Opin Chem Biol 2022; 68:102150. [PMID: 35487100 DOI: 10.1016/j.cbpa.2022.102150] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 03/16/2022] [Accepted: 03/22/2022] [Indexed: 12/11/2022]
Abstract
The pancreatic beta cell is the only cell type in the body responsible for insulin secretion, and thus plays a unique role in the control of glucose homeostasis. The loss of beta-cell mass and function plays an important role in both type 1 and type 2 diabetes. Thus, using chemical biology to identify small molecules targeting the beta cell could be an important component to developing future therapeutics for diabetes. This strategy provides an attractive path toward increasing beta-cell numbers in vivo. A regenerative strategy involves enhancing proliferation, differentiation, or neogenesis. On the other hand, protecting beta cells from cell death, or improving maturity and function, could preserve beta-cell mass. Here, we discuss the current state of chemical matter available to study beta-cell regeneration, and how they were discovered.
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Affiliation(s)
- Bridget K Wagner
- Chemical Biology and Therapeutics Science Program, Broad Institute, Cambridge, MA 02142, USA.
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2
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Patti AM, Giglio RV, Papanas N, Serban D, Stoian AP, Pafili K, Al Rasadi K, Rajagopalan K, Rizvi AA, Ciaccio M, Rizzo M. Experimental and Emerging Free Fatty Acid Receptor Agonists for the Treatment of Type 2 Diabetes. MEDICINA (KAUNAS, LITHUANIA) 2022; 58:medicina58010109. [PMID: 35056417 PMCID: PMC8779029 DOI: 10.3390/medicina58010109] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 01/08/2022] [Accepted: 01/10/2022] [Indexed: 04/11/2023]
Abstract
The current management of Type 2 Diabetes Mellitus (T2DM) includes incretin-based treatments able to enhance insulin secretion and peripheral insulin sensitivity as well as improve body mass, inflammation, plasma lipids, blood pressure, and cardiovascular outcomes. Dietary Free Fatty Acids (FFA) regulate metabolic and anti-inflammatory processes through their action on incretins. Selective synthetic ligands for FFA1-4 receptors have been developed as potential treatments for T2DM. To comprehensively review the available evidence for the potential role of FFA receptor agonists in the treatment of T2DM, we performed an electronic database search assessing the association between FFAs, T2DM, inflammation, and incretins. Evidence indicates that FFA1-4 agonism increases insulin sensitivity, induces body mass loss, reduces inflammation, and has beneficial metabolic effects. There is a strong inter-relationship between FFAs and incretins. FFA receptor agonism represents a potential target for the treatment of T2DM and may provide an avenue for the management of cardiometabolic risk in susceptible individuals. Further research promises to shed more light on this emerging topic.
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Affiliation(s)
- Angelo Maria Patti
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, School of Medicine, University of Palermo, 90133 Palermo, Italy; (A.M.P.); (M.R.)
| | - Rosaria Vincenza Giglio
- Department of Biomedicine, Neuroscience, and Advanced Diagnostics, Institute of Clinical Biochemistry, Clinical Molecular Medicine and Laboratory Medicine, University of Palermo, 90127 Palermo, Italy; (R.V.G.); (M.C.)
| | - Nikolaos Papanas
- Diabetes Centre, Second Department of Internal Medicine, Democritus University of Thrace, 68132 Alexandroupolis, Greece; (N.P.); (K.P.)
| | - Dragos Serban
- Forth Surgery Department, Faculty of Medicine, Carol Davila University, 050098 Bucharest, Romania;
| | - Anca Pantea Stoian
- Department of Diabetes, Faculty of Medicine, Nutrition and Metabolic Diseases, Carol Davila University, 050474 Bucharest, Romania;
| | - Kalliopi Pafili
- Diabetes Centre, Second Department of Internal Medicine, Democritus University of Thrace, 68132 Alexandroupolis, Greece; (N.P.); (K.P.)
| | - Khalid Al Rasadi
- Medical Research Center, Sultan Qaboos University, Muscat 123, Oman;
| | - Kanya Rajagopalan
- Department of Medicine, University of Central Florida College of Medicine, Orlando, FL 32827, USA;
| | - Ali A. Rizvi
- Department of Medicine, University of Central Florida College of Medicine, Orlando, FL 32827, USA;
- Division of Endocrinology, Diabetes and Metabolism, University of South Carolina School of Medicine, Columbia, SC 29208, USA
- Correspondence:
| | - Marcello Ciaccio
- Department of Biomedicine, Neuroscience, and Advanced Diagnostics, Institute of Clinical Biochemistry, Clinical Molecular Medicine and Laboratory Medicine, University of Palermo, 90127 Palermo, Italy; (R.V.G.); (M.C.)
- Department of Laboratory Medicine, University Hospital, 90127 Palermo, Italy
| | - Manfredi Rizzo
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, School of Medicine, University of Palermo, 90133 Palermo, Italy; (A.M.P.); (M.R.)
- Department of Diabetes, Faculty of Medicine, Nutrition and Metabolic Diseases, Carol Davila University, 050474 Bucharest, Romania;
- Division of Endocrinology, Diabetes and Metabolism, University of South Carolina School of Medicine, Columbia, SC 29208, USA
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3
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Miller CO, Cao J. Probing Hepatic Glucose Metabolism via 13C NMR Spectroscopy in Perfused Livers-Applications to Drug Development. Metabolites 2021; 11:metabo11110712. [PMID: 34822370 PMCID: PMC8622237 DOI: 10.3390/metabo11110712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 10/13/2021] [Accepted: 10/14/2021] [Indexed: 11/23/2022] Open
Abstract
Despite being first published over 40 years ago, the combination of 13C nuclear magnetic resonance spectroscopy (NMR) and the isolated perfused liver preparation remains a unique and relevant approach in investigating the effects of pharmacological interventions on hepatic metabolism. The use of intact, perfused livers maintains many metabolic reactions at their respective rates in vivo, while the use of 13C-labelled substrates in combination with 13C NMR allows for a detailed study of specific pathways, as well as the design of robust assays which can be used to evaluate novel pharmacological agents. In this review article, we share some of the methods used to probe glucose metabolism, and highlight key findings and successes derived from the application of this specialized technique to the area of drug development for diabetes and related metabolic disorders.
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Bazydlo-Guzenda K, Buda P, Mach M, Pieczykolan J, Kozlowska I, Janiszewski M, Drzazga E, Dominowski J, Ziolkowski H, Wieczorek M, Gad SC. Evaluation of the hepatotoxicity of the novel GPR40 (FFAR1) agonist CPL207280 in the rat and monkey. PLoS One 2021; 16:e0257477. [PMID: 34555055 PMCID: PMC8459971 DOI: 10.1371/journal.pone.0257477] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Accepted: 09/01/2021] [Indexed: 12/13/2022] Open
Abstract
GPR40 (FFAR1) is a promising target for the managing type 2 diabetes (T2D). The most advanced GPR40 agonist TAK-875 exhibited satisfactory glucose-lowering effects in phase II and III studies. However, the phase III studies of TAK-875 revealed drug-induced liver injury (DILI). It is unknown whether DILI is a consequence of a specific GPR40 agonist or is an inherent feature of all GPR40 agonists. CPL207280 is a novel GPR40 agonist that improves diabetes in Zucker Diabetic Fatty (ZDF) rats, Goto Kakizaki (GK) rats and db/db mice. In this report, the DILI-related toxicity of CPL207280 was compared directly with that of TAK-875. In vitro studies evaluating hepatic biliary transporter inhibition, mitochondrial function, and metabolic profiling were performed in hepatocytes from different species. The long term toxicity of CPL207280 was studied in vivo in rats and monkeys. Activity of CPL207280 was one order of magnitude lesser than that of TAK-875 for the inhibition of bile acid transporters. CPL207280 had a negligible effect on the hepatic mitochondria. In contrast to TAK-875, which was metabolized through toxic glucuronidation, CPL207280 was metabolized mainly through oxidation. No deleterious hepatic effects were observed in chronically treated healthy and diabetic animals. The study presents promising data on the feasibility of creating a liver-safe GPR40 agonist. Additionally, it can be concluded that DILI is not a hallmark of GPR40 agonists; it is linked to the intrinsic properties of an individual agonist.
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Affiliation(s)
- Katarzyna Bazydlo-Guzenda
- Innovative Drugs R&D Department, Celon Pharma S.A., Lomianki, Poland.,Postgraduate School of Molecular Medicine, Warsaw, Poland
| | - Pawel Buda
- Innovative Drugs R&D Department, Celon Pharma S.A., Lomianki, Poland
| | - Mateusz Mach
- Innovative Drugs R&D Department, Celon Pharma S.A., Lomianki, Poland
| | - Jerzy Pieczykolan
- Innovative Drugs R&D Department, Celon Pharma S.A., Lomianki, Poland
| | - Izabela Kozlowska
- Innovative Drugs R&D Department, Celon Pharma S.A., Lomianki, Poland
| | | | - Ewa Drzazga
- Innovative Drugs R&D Department, Celon Pharma S.A., Lomianki, Poland
| | - Jakub Dominowski
- Innovative Drugs R&D Department, Celon Pharma S.A., Lomianki, Poland
| | - Hubert Ziolkowski
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Warmia and Mazury, Olsztyn, Poland
| | - Maciej Wieczorek
- Innovative Drugs R&D Department, Celon Pharma S.A., Lomianki, Poland
| | - Shayne Cox Gad
- Gad Consulting Services, Raleigh, North Carolina Area, United States of America
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Bazydlo-Guzenda K, Buda P, Matloka M, Mach M, Stelmach F, Dzida R, Smuga D, Hucz-Kalitowska J, Teska-Kaminska M, Vialichka V, Dubiel K, Kaminska B, Wieczorek M, Pieczykolan J. CPL207280 - a novel GPR40/FFA1-specific agonist shows a favorable safety profile and exerts anti-diabetic effects in type 2 diabetic animals.. Mol Pharmacol 2021; 100:335-347. [PMID: 34349026 DOI: 10.1124/molpharm.121.000260] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 07/14/2021] [Indexed: 11/22/2022] Open
Abstract
G protein-coupled receptor 40 (GPR40) is a free fatty acid receptor mainly expressed in pancreatic β-cells activated by medium- and long-chain fatty acids and regulating insulin secretion via an increase in cytosolic free calcium ([Ca2+]i). Activation of GPR40 in pancreatic β-cells may improve glycemic control in type 2 diabetes through enhancement of glucose-stimulated insulin secretion. However, the most clinically advanced GPR40 agonist - TAK-875 (fasiglifam) - was withdrawn from phase III due to its hepatotoxicity resulting from the inhibition of pivotal bile acid transporters. Here, we present a new, potent CPL207280 agonist and compare it with fasiglifam in numerous in vitro and in vivo studies. CPL207280 showed greater potency than fasiglifam in a Ca2+ influx assay with a hGPR40 protein (EC50=80 vs. 270 nM, respectively). At the 10 µM concentration, it showed 3.9 times greater enhancement of GSIS in mouse MIN6 pancreatic β cells. In Wistar Han rats and C57BL6 mice challenged with glucose, CPL207280 stimulated 2.5-times greater insulin secretion without causing hypoglycemia at 10 mg/kg compared with fasiglifam. In three diabetic rat models, CPL207280 improved glucose tolerance and increased insulin area under the curve by 212%, 142%, and 347%, respectively. Evaluation of potential off-target activity (Safety47{trade mark, serif}) and selectivity of CPL207280 (at 10 μM) did not show any significant off-target activity. We conclude that CPL207280 is a potent enhancer of glucose-stimulated insulin secretion in animal disease models with no risk of hypoglycemia at therapeutic doses. Therefore, we propose the CPL207280 compound as a compelling candidate for type 2 diabetes treatment. Significance Statement GPR40 is a well-known and promising target for diabetes. This study is the first to show the safety and effects of CPL207280, a novel GPR40/FFA1 agonist, on glucose homeostasis both in vitro and in vivo in different diabetic animal models. Therefore, we propose the CPL207280 compound as a novel, glucose-lowering agent, overcoming T2D patients' unmet medical needs.
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Affiliation(s)
| | - Pawel Buda
- Research and Development Centre, Celon Pharma SA, Poland
| | | | - Mateusz Mach
- Research and Development Centre, Celon Pharma SA, Poland
| | - Filip Stelmach
- Research and Development Centre, Celon Pharma SA, Poland
| | - Radoslaw Dzida
- Research and Development Centre, Celon Pharma SA, Poland
| | - Damian Smuga
- Research and Development Centre, Celon Pharma, Poland
| | | | | | | | | | - Bozena Kaminska
- Postgraduate School of Molecular Medicine, Medical University of Warsaw, Poland
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Rani L, Grewal AS, Sharma N, Singh S. Recent Updates on Free Fatty Acid Receptor 1 (GPR-40) Agonists for the Treatment of Type 2 Diabetes Mellitus. Mini Rev Med Chem 2021; 21:426-470. [PMID: 33100202 DOI: 10.2174/1389557520666201023141326] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 09/09/2020] [Accepted: 09/14/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND The global incidence of type 2 diabetes mellitus (T2DM) has enthused the development of new antidiabetic targets with low toxicity and long-term stability. In this respect, free fatty acid receptor 1 (FFAR1), which is also recognized as a G protein-coupled receptor 40 (GPR40), is a novel target for the treatment of T2DM. FFAR1/GPR40 has a high level of expression in β-cells of the pancreas, and the requirement of glucose for stimulating insulin release results in immense stimulation to utilise this target in the medication of T2DM. METHODS The data used for this review is based on the search of several scienctific databases as well as various patent databases. The main search terms used were free fatty acid receptor 1, FFAR1, FFAR1 agonists, diabetes mellitus, G protein-coupled receptor 40 (GPR40), GPR40 agonists, GPR40 ligands, type 2 diabetes mellitus and T2DM. RESULTS The present review article gives a brief overview of FFAR1, its role in T2DM, recent developments in small molecule FFAR1 (GPR40) agonists reported till now, compounds of natural/plant origin, recent patents published in the last few years, mechanism of FFAR1 activation by the agonists, and clinical status of the FFAR1/GPR40 agonists. CONCLUSION The agonists of FFAR1/GRP40 showed considerable potential for the therapeutic control of T2DM. Most of the small molecule FFAR1/GPR40 agonists developed were aryl alkanoic acid derivatives (such as phenylpropionic acids, phenylacetic acids, phenoxyacetic acids, and benzofuran acetic acid derivatives) and thiazolidinediones. Some natural/plant-derived compounds, including fatty acids, sesquiterpenes, phenolic compounds, anthocyanins, isoquinoline, and indole alkaloids, were also reported as potent FFAR1 agonists. The clinical investigations of the FFAR1 agonists demonstrated their probable role in the improvement of glucose control. Though, there are some problems still to be resolved in this field as some FFAR1 agonists terminated in the late phase of clinical studies due to "hepatotoxicity." Currently, PBI-4050 is under clinical investigation by Prometic. Further investigation of pharmacophore scaffolds for FFAR1 full agonists as well as multitargeted modulators and corresponding clinical investigations will be anticipated, which can open up new directions in this area.
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Affiliation(s)
- Lata Rani
- Chitkara University School of Basic Sciences, Chitkara University, Himachal Pradesh, India
| | - Ajmer Singh Grewal
- Chitkara University School of Basic Sciences, Chitkara University, Himachal Pradesh, India
| | - Neelam Sharma
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Sukhbir Singh
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
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Gupta A, Behl T, Sehgal A, Bhardwaj S, Singh S, Sharma N, Hafeez A. Exploring the recent molecular targets for diabetes and associated complications. Mol Biol Rep 2021; 48:2863-2879. [PMID: 33763776 DOI: 10.1007/s11033-021-06294-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Accepted: 03/16/2021] [Indexed: 12/19/2022]
Abstract
Diabetes is likely one of the centenarian diseases which is apprehended with certainty to humans. According to established protocols of the World Health Organisation (WHO) and numerous investigated studies diabetes is analyzed as a stellar and leading health issue worldwide. Although, the implicit costs of this pathology are increasing every year, thus, there is a need to find a novel method which can provide promising results in the management of diabetes and can overcome the side effects associated with the conventional medication. Comprehensive review of this topic was undertaken through various research and review papers which were conducted using MEDLINE, BIOSIS and EMBASE database. Using various keywords, we retrieve the most relevant content for the thorough review on recent targets and novel molecular pathways for targeting diabetes and associated complications. From the detailed analysis, we have highlighted some molecular pathways and novel targets which had shown promising results in both in-vitro and in-vivo studies and may be considered as pipeline target for clinical trials. Furthermore, these targets not only abetted amelioration of diabetes but also helped in mitigation of diabetes associated complications as well. Thus, based on the available information and literature on these potential molecules, conclusive evidence can be drawn which confirms targeting these novel pathways may unleash an array of benefits that have the potential to overpower the benefits obtained from conventional therapy in the management of diabetes thereby decreasing morbidity and mortality associated with diabetic complications.
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Affiliation(s)
- Amit Gupta
- Chitkara College of Pharmacy, Chitkara University, Rajpura, Punjab, India
| | - Tapan Behl
- Chitkara College of Pharmacy, Chitkara University, Rajpura, Punjab, India.
| | - Aayush Sehgal
- Chitkara College of Pharmacy, Chitkara University, Rajpura, Punjab, India
| | - Shaveta Bhardwaj
- GHG Khalsa College of Pharmacy, Gurusar Sadhar, Ludhiana, Punjab, India
| | - Sukhbir Singh
- Chitkara College of Pharmacy, Chitkara University, Rajpura, Punjab, India
| | - Neelam Sharma
- Chitkara College of Pharmacy, Chitkara University, Rajpura, Punjab, India
| | - Abdul Hafeez
- Glocal School of Pharmacy, Glocal University, Mirzapur Pole, Uttar Pradesh, India
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Koyama R, Ookawara M, Watanabe M, Moritoh Y. Chronic Exposure to SCO-267, an Allosteric GPR40 Full Agonist, Is Effective in Improving Glycemic Control in Rats. Mol Pharmacol 2021; 99:286-293. [PMID: 33547250 DOI: 10.1124/molpharm.120.000168] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 01/15/2021] [Indexed: 11/22/2022] Open
Abstract
Full agonist-mediated activation of free fatty acid receptor 1 (FFAR1/GPR40) alleviates diabetes in rodents. Considering that diabetes is a chronic disease, assessment of treatment durability of chronic exposure to a GPR40 full agonist is pivotal for treating patients with diabetes. However, the physiologic significance of chronic in vitro and in vivo exposure to GPR40 full agonists is largely unclear. Here, we evaluated the in vitro and in vivo effects of chronic treatment with SCO-267, a GPR40 full agonist, on signal transduction and glucose control. In vitro experiments showed that SCO-267 is an allosteric full agonist for GPR40, which activates the Gα q, Gα s, and Gα 12/13 pathways and β-arrestin recruitment. The calcium signal response was largely sustained in GPR40-overexpressing CHO cells even after prolonged incubation with SCO-267. To evaluate the in vivo relevance of chronic exposure to GPR40 full agonists, SCO-267 (1 and 10 mg/kg) was administered once daily to neonatally streptozotocin-induced diabetic rats for 15-33 days, and glucose control was evaluated. After 15 days of dosing followed by the drug washout period, SCO-267 improved glucose tolerance, most likely by increasing insulin sensitivity in rats. After 33 days, repeated exposure to SCO-267 was highly effective in improving glucose tolerance in rats. Furthermore, chronic exposure to SCO-267 increased pancreatic insulin content. These results demonstrated that even after chronic exposure, SCO-267 effectively activates GPR40 in cells and rats, suggesting the clinical application of SCO-267 in treating chronic diseases including diabetes. SIGNIFICANCE STATEMENT: GPR40 is a validated therapeutic target for diabetes. This study showed that even after chronic exposure, SCO-267, an allosteric GPR40 full agonist, effectively activates GPR40 in cells and rats; these results suggest a durable efficacy of SCO-267 in patients.
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Affiliation(s)
- Ryokichi Koyama
- Research Division, SCOHIA PHARMA, Inc., Fujisawa, Kanagawa, Japan
| | - Mitsugi Ookawara
- Research Division, SCOHIA PHARMA, Inc., Fujisawa, Kanagawa, Japan
| | | | - Yusuke Moritoh
- Research Division, SCOHIA PHARMA, Inc., Fujisawa, Kanagawa, Japan
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Chen Y, Ren Q, Zhou Z, Deng L, Hu L, Zhang L, Li Z. HWL-088, a new potent free fatty acid receptor 1 (FFAR1) agonist, improves glucolipid metabolism and acts additively with metformin in ob/ob diabetic mice. Br J Pharmacol 2020; 177:2286-2302. [PMID: 31971610 PMCID: PMC7174891 DOI: 10.1111/bph.14980] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 12/24/2019] [Accepted: 01/07/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND AND PURPOSE The free fatty acid receptor 1 (FFAR1) plays an important role in glucose-stimulated insulin secretion making it an attractive anti-diabetic target. This study characterizes the pharmacological profile of HWL-088 (2-(2-fluoro-4-((2'-methyl-[1,1'- biphenyl]-3-yl)methoxy)phenoxy)acetic acid), a novel highly potent FFAR1 agonist in vitro and in vivo. Moreover, we investigated the long-term effects of HWL-088 alone and in combination with metformin in diabetic mice. EXPERIMENTAL APPROACH In vitro effects of HWL-088 on FFAR1 and PPARα/γ/δ were studied in cell-based assays. Glucose-dependent insulinotropic effects were evaluated in MIN6 cell line and in rats. Long-term effects on glucose and lipid metabolism were investigated in ob/ob mice. KEY RESULTS HWL-088 is a highly potent FFAR1 agonist (EC50 = 18.9 nM) with moderate PPARδ activity (EC50 = 570.9 nM) and promotes glucose-dependent insulin secretion in vitro and in vivo. Long-term administration of HWL-088 exhibited better glucose control and plasma lipid profiles than those of another FFAR1 agonist, TAK-875, and synergistic improvements were observed when combined with metformin. Moreover, HWL-088 and combination therapy improved β-cell function by up-regulation of pancreas duodenum homeobox-1, reduced fat accumulation in adipose tissue and alleviated fatty liver in ob/ob mice. The effect of HWL-088 involves a reduction in hepatic lipogenesis and oxidative stress, increased lipoprotein lipolysis, glucose uptake, mitochondrial function and fatty acid β-oxidation. CONCLUSION AND IMPLICATIONS These data indicate that long-term treatment with HWL-088, a highly potent FFAR1 agonist, improves glucose and lipid metabolism and may be useful for the treatment of diabetes mellitus by mono-therapy or combination with metformin.
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Affiliation(s)
- Yueming Chen
- School of PharmacyGuangdong Pharmaceutical UniversityGuangzhouChina
- Key Laboratory of New Drug Discovery and Evaluation of Ordinary Universities of Guangdong ProvinceGuangdong Pharmaceutical UniversityGuangzhouChina
| | - Qiang Ren
- School of PharmacyGuangdong Pharmaceutical UniversityGuangzhouChina
| | - Zongtao Zhou
- School of PharmacyGuangdong Pharmaceutical UniversityGuangzhouChina
| | - Liming Deng
- School of PharmacyGuangdong Pharmaceutical UniversityGuangzhouChina
| | - Lijun Hu
- School of PharmacyGuangdong Pharmaceutical UniversityGuangzhouChina
| | - Luyong Zhang
- School of PharmacyGuangdong Pharmaceutical UniversityGuangzhouChina
- Key Laboratory of New Drug Discovery and Evaluation of Ordinary Universities of Guangdong ProvinceGuangdong Pharmaceutical UniversityGuangzhouChina
- Guangzhou Key Laboratory of Construction and Application of New Drug Screening Model SystemsGuangdong Pharmaceutical UniversityGuangzhouChina
- Jiangsu Key Laboratory of Drug ScreeningChina Pharmaceutical UniversityNanjingChina
| | - Zheng Li
- School of PharmacyGuangdong Pharmaceutical UniversityGuangzhouChina
- Key Laboratory of New Drug Discovery and Evaluation of Ordinary Universities of Guangdong ProvinceGuangdong Pharmaceutical UniversityGuangzhouChina
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Li Z, Liu C, Zhou Z, Hu L, Deng L, Ren Q, Qian H. A novel FFA1 agonist, CPU025, improves glucose-lipid metabolism and alleviates fatty liver in obese-diabetic (ob/ob) mice. Pharmacol Res 2020; 153:104679. [DOI: 10.1016/j.phrs.2020.104679] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 11/20/2019] [Accepted: 01/30/2020] [Indexed: 12/12/2022]
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GPR40 full agonism exerts feeding suppression and weight loss through afferent vagal nerve. PLoS One 2019; 14:e0222653. [PMID: 31525244 PMCID: PMC6746387 DOI: 10.1371/journal.pone.0222653] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 09/03/2019] [Indexed: 12/18/2022] Open
Abstract
GPR40/FFAR1 is a Gq protein-coupled receptor expressed in pancreatic β cells and enteroendocrine cells, and mediates insulin and incretin secretion to regulate feeding behavior. Several GPR40 full agonists have been reported to reduce food intake in rodents by regulating gut hormone secretion in addition to their potent glucose-lowering effects; however, detailed mechanisms of feeding suppression are still unknown. In the present study, we characterized T-3601386, a novel compound with potent full agonistic activity for GPR40, by using in vitro Ca2+ mobilization assay in Chinese hamster ovary (CHO) cells expressing FFAR1 and in vivo hormone secretion assay. We also evaluated feeding suppression and weight loss after the administration of T-3601386 and investigated the involvement of the vagal nerve in these effects. T-3601386, but not a partial agonist fasiglifam, increased intracellular Ca2+ levels in CHO cells with low FFAR1 expression, and single dosing of T-3601386 in diet-induced obese (DIO) rats elevated plasma incretin levels, suggesting full agonistic properties of T-3601386 against GPR40. Multiple doses of T-3601386, but not fasiglifam, in DIO rats showed dose-dependent weight loss accompanied by feeding suppression and durable glucagon-like peptide-1 elevation, all of which were completely abolished in Ffar1-/- mice. Immunohistochemical analysis in the nuclei of the solitary tract demonstrated that T-3601386 increased the number of c-Fos positive cells, which also disappeared in Ffar1-/- mice. Surgical vagotomy and drug-induced deafferentation counteracted the feeding suppression and weight loss induced by the administration of T-3601386. These results suggest that T-3601386 exerts incretin release and weight loss in a GPR40-dependent manner, and that afferent vagal nerves are important for the feeding suppression induced by GPR40 full agonism. Our novel findings raise the possibility that GPR40 full agonist can induce periphery-derived weight reduction, which may provide benefits such as less adverse effects in central nervous system compared to centrally-acting anti-obesity drugs.
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Ueno H, Ito R, Abe SI, Ookawara M, Miyashita H, Ogino H, Miyamoto Y, Yoshihara T, Kobayashi A, Tsujihata Y, Takeuchi K, Watanabe M, Yamada Y, Maekawa T, Nishigaki N, Moritoh Y. SCO-267, a GPR40 Full Agonist, Improves Glycemic and Body Weight Control in Rat Models of Diabetes and Obesity. J Pharmacol Exp Ther 2019; 370:172-181. [DOI: 10.1124/jpet.118.255885] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Accepted: 04/01/2019] [Indexed: 12/14/2022] Open
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Ackerson T, Amberg A, Atzrodt J, Arabeyre C, Defossa E, Dorau M, Dudda A, Dwyer J, Holla W, Kissner T, Kohlmann M, Kürzel U, Pánczél J, Rajanna S, Riedel J, Schmidt F, Wäse K, Weitz D, Derdau V. Mechanistic investigations of the liver toxicity of the free fatty acid receptor 1 agonist fasiglifam (TAK875) and its primary metabolites. J Biochem Mol Toxicol 2019; 33:e22345. [DOI: 10.1002/jbt.22345] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 01/23/2019] [Accepted: 04/04/2019] [Indexed: 12/21/2022]
Affiliation(s)
| | | | - Jens Atzrodt
- Integrated Drug Discovery, Sanofi Frankfurt Germany
| | | | | | | | - Angela Dudda
- Global Project Management Unit, DCV, Sanofi Frankfurt Germany
| | | | | | | | - Markus Kohlmann
- Global Project Management Unit, DCV, Sanofi Frankfurt Germany
| | - Ulrich Kürzel
- Drug Metabolism and Pharmacokinetics, Sanofi Frankfurt Germany
| | - József Pánczél
- Drug Metabolism and Pharmacokinetics, Sanofi Frankfurt Germany
| | | | - Jens Riedel
- Drug Metabolism and Pharmacokinetics, Sanofi Frankfurt Germany
| | | | | | - Dietmar Weitz
- Drug Metabolism and Pharmacokinetics, Sanofi Frankfurt Germany
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Shen X, Fan B, Hu X, Luo L, Yan Y, Yang L. Metformin Reduces Lipotoxicity-Induced Meta-Inflammation in β-Cells through the Activation of GPR40-PLC-IP3 Pathway. J Diabetes Res 2019; 2019:7602427. [PMID: 31950065 PMCID: PMC6948338 DOI: 10.1155/2019/7602427] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 08/01/2019] [Accepted: 09/04/2019] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND AND PURPOSE Metformin, a widely used antidiabetic drug, has been shown to have anti-inflammatory properties; nevertheless, its influence on β-cell meta-inflammation remains unclear. The following study investigated the effects of metformin on meta-inflammatory in β-cells and whether the underlying mechanisms were associated with the G protein-coupled receptor 40-phospholipase C-inositol 1, 4, 5-trisphosphate (GPR40-PLC-IP3) pathway. MATERIALS AND METHODS Lipotoxicity-induced β-cells and the high-fat diet-induced obese rat model were used in the study. RESULTS Metformin-reduced lipotoxicity-induced β-cell meta-inflammatory injury was associated with the expression of GPR40. GPR40 was involved in metformin reversing metabolic inflammation key marker TLR4 activation-mediated β-cell injury. Furthermore, downstream signaling protein PLC-IP3 of GPR40 was involved in the protective effect of metformin on meta-inflammation, and the above process of metformin was partially regulated by AMPK activity. In addition, the anti-inflammatory effects of metformin were observed in obese rats. CONCLUSION Metformin can reduce lipotoxicity-induced meta-inflammation in β-cells through the regulation of the GPR40-PLC-IP3 pathway and partially via the regulation of AMPK activity.
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Affiliation(s)
- Ximei Shen
- Endocrinology Department, The First Affiliated Hospital of Fujian Medical University, Fuzhou, 350005 Fujian, China
- Diabetes Research Institute of Fujian Province, Fuzhou, 350005 Fujian, China
| | - Beibei Fan
- Endocrinology Department, The First Affiliated Hospital of Fujian Medical University, Fuzhou, 350005 Fujian, China
| | - Xin Hu
- Endocrinology Department, The First Affiliated Hospital of Fujian Medical University, Fuzhou, 350005 Fujian, China
| | - Liufen Luo
- Endocrinology Department, The First Affiliated Hospital of Fujian Medical University, Fuzhou, 350005 Fujian, China
| | - Yuanli Yan
- Endocrinology Department, The First Affiliated Hospital of Fujian Medical University, Fuzhou, 350005 Fujian, China
| | - Liyong Yang
- Endocrinology Department, The First Affiliated Hospital of Fujian Medical University, Fuzhou, 350005 Fujian, China
- Diabetes Research Institute of Fujian Province, Fuzhou, 350005 Fujian, China
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15
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Tsuda N, Kawaji A, Takagi M, Higashi C, Nakamura M, Hosaka Y, Sakaki J. Free fatty acid receptor 1 agonist, MR1704, lowers blood glucose levels in rats unresponsive to the sulfonylurea, glibenclamide. Drug Dev Res 2017; 79:16-21. [PMID: 29080222 DOI: 10.1002/ddr.21416] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 10/12/2017] [Indexed: 12/22/2022]
Abstract
Preclinical Research & Development MR1704 is a selective G protein-coupled receptor 40/free fatty acid receptor 1 agonist, which exhibited favorable pharmacokinetic profiles and glucose-lowering effects in animal models. We studied the effects of MR1704 in a sulfonylurea-desensitized Sprague-Dawley rat model and evaluated the risk of pancreatic β-cell exhaustion compared to that of glibenclamide in Zucker fatty rats. Rats fed ad libitum a diet containing 0.03% glibenclamide exhibited lower non-fasting blood glucose levels compared to those in rats fed a control diet during the first 6 days. However, the response to glibenclamide disappeared on day 9. In a rat oral glucose tolerance test (OGTT), MR1704 reduced the plasma glucose excursion, whereas glibenclamide did not show this effect. In Zucker fatty rats, oral administration of MR1704 reduced glucose excursion during the OGTT, and the effects of MR1704 were maintained after 2-week treatment. In contrast, the glucose-lowering effects of glibenclamide were diminished, and glucose tolerance was aggravated after 2-week treatment. These results indicated that MR1704 provided more sustainable effects compared to those of the sulfonylurea, glibenclamide suggesting that MR1704 may be an attractive therapeutic option for diabetic patients who are unresponsive to sulfonylurea treatment.
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Affiliation(s)
- Naoto Tsuda
- Research Center, Mochida Pharmaceutical Company Limited, Shizuoka, Japan
| | - Atsuko Kawaji
- Research Center, Mochida Pharmaceutical Company Limited, Shizuoka, Japan
| | - Mitsuhiro Takagi
- Research Center, Mochida Pharmaceutical Company Limited, Shizuoka, Japan
| | - Chika Higashi
- Research Center, Mochida Pharmaceutical Company Limited, Shizuoka, Japan
| | - Masaki Nakamura
- Research Center, Mochida Pharmaceutical Company Limited, Shizuoka, Japan
| | - Yoshitaka Hosaka
- Research Center, Mochida Pharmaceutical Company Limited, Shizuoka, Japan
| | - Junichi Sakaki
- Research Center, Mochida Pharmaceutical Company Limited, Shizuoka, Japan
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Tsuda N, Kawaji A, Sato T, Takagi M, Higashi C, Kato Y, Ogawa K, Naba H, Ohkouchi M, Nakamura M, Hosaka Y, Sakaki J. A novel free fatty acid receptor 1 (GPR40/FFAR1) agonist, MR1704, enhances glucose-dependent insulin secretion and improves glucose homeostasis in rats. Pharmacol Res Perspect 2017; 5. [PMID: 28805970 PMCID: PMC5684856 DOI: 10.1002/prp2.340] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 06/09/2017] [Accepted: 06/13/2017] [Indexed: 11/17/2022] Open
Abstract
Activation of G protein‐coupled receptor 40/Free fatty acid receptor 1 (GPR40/FFAR1), which is highly expressed in pancreatic β cells, is considered an important pharmacologic target for the treatment of type 2 diabetes mellitus. The aim of this study was to determine the effect of MR1704, a novel GPR40/FFAR1 agonist, on glucose homeostasis in rats. MR1704 is a highly potent and selective, orally bioavailable agonist with similar in vitro potencies among humans, mice, and rats. Treatment of rat islets with MR1704 increased glucose‐dependent insulin secretion. Augmentation of glucose‐dependent insulin secretion was abolished by adding a GPR40/FFAR1 antagonist. In mouse, insulinoma MIN6 cells, palmitic acid induced the activity of caspase 3/7 after a 72‐h exposure, while pharmacologically active concentrations of MR1704 did not. In an oral glucose tolerance test in normal Sprague‐Dawley rats, orally administered MR1704 (1–10 mg·kg−1) reduced plasma glucose excursion and enhanced insulin secretion, but MR1704 did not induce hypoglycemia, even at 300 mg·kg−1, in fasted Sprague‐Dawley rats. In addition, orally administered MR1704 reduced plasma glucose excursion and enhanced insulin secretion in diabetic Goto‐Kakizaki rats. Oral administration of MR1704 once daily to Goto‐Kakizaki rats reduced their blood glucose levels during a 5‐week treatment period without reducing pancreatic insulin content; as a result, hemoglobin A1C levels significantly decreased. These results suggest that MR1704 improves glucose homeostasis through glucose‐dependent insulin secretion with a low risk of hypoglycemia and pancreatic toxicity. MR1704 shows promise as a new, glucose‐lowering drug to treat type 2 diabetes mellitus.
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Affiliation(s)
- Naoto Tsuda
- Research Center, Mochida Pharmaceutical Company Limited, Shizuoka, Japan
| | - Atsuko Kawaji
- Research Center, Mochida Pharmaceutical Company Limited, Shizuoka, Japan
| | - Toshihiro Sato
- Research Center, Mochida Pharmaceutical Company Limited, Shizuoka, Japan
| | - Mitsuhiro Takagi
- Research Center, Mochida Pharmaceutical Company Limited, Shizuoka, Japan
| | - Chika Higashi
- Research Center, Mochida Pharmaceutical Company Limited, Shizuoka, Japan
| | - Yutaka Kato
- Research Center, Mochida Pharmaceutical Company Limited, Shizuoka, Japan
| | - Kumiko Ogawa
- Research Center, Mochida Pharmaceutical Company Limited, Shizuoka, Japan
| | - Hiroyasu Naba
- Research Center, Mochida Pharmaceutical Company Limited, Shizuoka, Japan
| | - Munetaka Ohkouchi
- Research Center, Mochida Pharmaceutical Company Limited, Shizuoka, Japan
| | - Masaki Nakamura
- Research Center, Mochida Pharmaceutical Company Limited, Shizuoka, Japan
| | - Yoshitaka Hosaka
- Research Center, Mochida Pharmaceutical Company Limited, Shizuoka, Japan
| | - Junichi Sakaki
- Research Center, Mochida Pharmaceutical Company Limited, Shizuoka, Japan
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Hjuler ST, Gydesen S, Andreassen KV, Karsdal MA, Henriksen K. The Dual Amylin- and Calcitonin-Receptor Agonist KBP-042 Works as Adjunct to Metformin on Fasting Hyperglycemia and HbA1c in a Rat Model of Type 2 Diabetes. J Pharmacol Exp Ther 2017; 362:24-30. [PMID: 28438778 DOI: 10.1124/jpet.117.241281] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Accepted: 04/19/2017] [Indexed: 01/06/2023] Open
Abstract
KBP-042 is a dual amylin and calcitonin receptor agonist that increases glucose tolerance and insulin action and reduces body weight in rat models of obesity and prediabetes. The objective of the present study was to 1) evaluate KBP-042 as a treatment of late-stage type 2 diabetes in a rat model and 2) assess the value of adding KBP-042 to the standard of care, metformin, to consider KBP-042 as a relevant drug for treating patients with type 2 diabetes. Two studies were included: an intervention study and a prevention study. In the intervention study, treatment with 5 µg/kg KBP-042 was initiated in 11-week-old Zucker diabetic fatty (ZDF) rats, in which glucose tolerance, fasting glycemia, and glycated hemoglobin were assessed after 4 weeks. In the prevention study, either metformin (400 mg/kg), KBP-042 (5 µg/kg), or a combination of both were administered to ZDF rats for a total of 9 weeks. Glycemia, glucose tolerance, and insulin tolerance were tested. Furthermore, fasting plasma insulin and glucagon levels were evaluated. Finally, pancreatic content of insulin was assessed as a surrogate marker of beta-cell mass. It was found that KBP-042 was efficient in lowering fasting plasma glucose as well as improving glucose tolerance, both as prevention and intervention of disease progression. Furthermore, KBP-042 was efficient in combination with metformin and had additional effects compared with either therapy alone. In conclusion, KBP-042 is a highly relevant therapeutic candidate against type 2 diabetes, effective both as an add-on therapy to metformin and as a stand-alone therapy.
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Affiliation(s)
- Sara T Hjuler
- Department of Musculoskeletal Diseases, Nordic Bioscience Biomarkers and Research, Herlev, Denmark
| | - Sofie Gydesen
- Department of Musculoskeletal Diseases, Nordic Bioscience Biomarkers and Research, Herlev, Denmark
| | - Kim V Andreassen
- Department of Musculoskeletal Diseases, Nordic Bioscience Biomarkers and Research, Herlev, Denmark
| | - Morten A Karsdal
- Department of Musculoskeletal Diseases, Nordic Bioscience Biomarkers and Research, Herlev, Denmark
| | - Kim Henriksen
- Department of Musculoskeletal Diseases, Nordic Bioscience Biomarkers and Research, Herlev, Denmark
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Li Z, Xu X, Huang W, Qian H. Free Fatty Acid Receptor 1 (FFAR1) as an Emerging Therapeutic Target for Type 2 Diabetes Mellitus: Recent Progress and Prevailing Challenges. Med Res Rev 2017; 38:381-425. [DOI: 10.1002/med.21441] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 01/23/2017] [Accepted: 02/14/2017] [Indexed: 12/19/2022]
Affiliation(s)
- Zheng Li
- Center of Drug Discovery, State Key Laboratory of Natural Medicines; China Pharmaceutical University; 24 Tongjiaxiang Nanjing 210009 P.R. China
| | - Xue Xu
- Key Laboratory of Drug Quality Control and Pharmacovigilance; China Pharmaceutical University; 24 Tongjiaxiang Nanjing 210009 P.R. China
| | - Wenlong Huang
- Center of Drug Discovery, State Key Laboratory of Natural Medicines; China Pharmaceutical University; 24 Tongjiaxiang Nanjing 210009 P.R. China
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Disease; China Pharmaceutical University; 24 Tongjiaxiang Nanjing 210009 P.R. China
| | - Hai Qian
- Center of Drug Discovery, State Key Laboratory of Natural Medicines; China Pharmaceutical University; 24 Tongjiaxiang Nanjing 210009 P.R. China
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Disease; China Pharmaceutical University; 24 Tongjiaxiang Nanjing 210009 P.R. China
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19
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Abstract
Of the 415 million people suffering from diabetes worldwide, 90% have type 2 diabetes. Type 2 diabetes is characterized by hyperglycemia and occurs in obese individuals as a result of insulin resistance and inadequate insulin levels. Accordingly, diabetes drugs are tailored to enhance glucose disposal or target the pancreatic islet β cell to increase insulin secretion. The majority of the present-day insulin secretagogues, however, increase the risk of iatrogenic hypoglycemia, and hence alternatives are actively sought. The long-chain fatty acid, G protein-coupled receptor FFA1/Gpr40, is expressed in β cells, and its activation potentiates insulin secretion in a glucose-dependent manner. Preclinical data indicate that FFA1 agonism is an effective treatment to restore glucose homeostasis in rodent models of diabetes. This initial success prompted clinical trials in type 2 diabetes patients, the results of which were promising; however, the field suffered a significant setback when the lead compound TAK-875/fasiglifam was withdrawn from clinical development due to liver safety concerns. Nevertheless, recent developments have brought to light a surprising complexity of FFA1 agonist action, signaling diversity, and biological outcomes, raising hopes that with a greater understanding of the mechanisms at play the second round will be more successful.
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Affiliation(s)
- Julien Ghislain
- Montreal Diabetes Research Center, University of Montreal, Montreal, QC, Canada
- CRCHUM, University of Montreal, 900 rue St Denis, Montreal, QC, Canada, H2X 0A9
| | - Vincent Poitout
- Montreal Diabetes Research Center, University of Montreal, Montreal, QC, Canada.
- CRCHUM, University of Montreal, 900 rue St Denis, Montreal, QC, Canada, H2X 0A9.
- Department of Medicine, University of Montreal, Montreal, QC, Canada.
- Department of Biochemistry and Molecular Medicine, University of Montreal, Montreal, QC, Canada.
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20
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Arafa NMS, Marie MAS, AlAzimi SAM. Effect of canagliflozin and metformin on cortical neurotransmitters in a diabetic rat model. Chem Biol Interact 2016; 258:79-88. [PMID: 27566243 DOI: 10.1016/j.cbi.2016.08.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Revised: 08/05/2016] [Accepted: 08/19/2016] [Indexed: 12/13/2022]
Abstract
BACKGROUND The rapid economic development in the Arabian Gulf has resulted in lifestyle changes that have increased the prevalence of obesity and type 2 diabetes, with the greatest increases observed in Kuwait. Dyslipidemia and diabetes are risk factors for disruptions in cortical neurotransmitter homeostasis. This study investigated the effect of the antidiabetic medications canagliflozin (CAN) and metformin (MET) on the levels of cortical neurotransmitters in a diabetic rat model. MATERIALS AND METHODS The rats were assigned to the control (C) group, the diabetic group that did not receive treatment (D) or the diabetic group treated with either CAN (10 mg/kg) or MET (100 mg/kg) for 2 or 4 weeks. Blood and urine glucose levels and cortical acetylcholinesterase (AChE) activity were assayed, and amino acid and monoamine levels were measured using HPLC. RESULTS The diabetic group exhibited a significant increase in AChE activity and a decrease in monoamine and amino acid neurotransmitter levels. In the CAN group, AChE was significantly lower than that in the D and D + MET groups after 2 weeks of treatment. In addition, a significant increase in some cortical monoamines and amino acids was observed in the D + MET and D + CAN groups compared with the D group. Histopathological analysis revealed the presence of severe focal hemorrhage, neuronal degeneration, and cerebral blood vessel congestion, with gliosis in the cerebrum of rats in the D group. The CAN-treated group exhibited severe cerebral blood vessel congestion after 2 weeks of treatment and focal gliosis in the cerebrum after 4 weeks of treatment. Focal gliosis in the cerebrum of rats in the MET-treated group was observed after 2 and 4 weeks of treatment. CONCLUSIONS We conclude that the effect of CAN and MET on neurotransmitters is potentially mediated by their antihyperglycemic and antihyperlipidemic effects. In addition, the effects of CAN on neurotransmitters might be associated with its receptor activity, and the effect of MET on neurotransmitters might be associated with cerebral metabolism.
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Affiliation(s)
- Nadia M S Arafa
- Faculty of Science, Biology Department, Jazan University, KSA & National Organization for Drug Control and Research, Department of Physiology, Egypt.
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Li Z, Qiu Q, Geng X, Yang J, Huang W, Qian H. Free fatty acid receptor agonists for the treatment of type 2 diabetes: drugs in preclinical to phase II clinical development. Expert Opin Investig Drugs 2016; 25:871-90. [PMID: 27171154 DOI: 10.1080/13543784.2016.1189530] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
INTRODUCTION The alarming prevalence of type 2 diabetes mellitus (T2DM) stimulated the exploitation of new antidiabetic drugs with extended durability and enhanced safety. In this regard, the free fatty acid receptor 1 (FFA1) and FFA4 have emerged as attractive targets in the last decade. FFA1 has prominent advantages in promoting insulin and incretin secretion while FFA4 shows great potential in incretin secretion, insulin sensitization and anti-inflammatory effects. AREA COVERED Herein, the authors focus specifically on FFA1 and FFA4 agonists in clinical trials and preclinical development. LY2922470, P11187 and SHR0534 are currently active in clinical trials while the CNX-011-67, SAR1, DS-1558 and BMS-986118 are in preclinical phase. The information for this review is retrieved from Integrity, Scifinder, Espacenet and clinicaltrials.gov databases. EXPERT OPINION Current proof-of-concept in clinical trials suggests that FFA1 agonists have a significant improvement for T2DM without the risk of hypoglycemia. However, there are still several challenging problems including the mechanism of the receptor and the efficacy and safety of the ligands.
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Affiliation(s)
- Zheng Li
- a Center of Drug Discovery, State Key Laboratory of Natural Medicines , China Pharmaceutical University , Nanjing , PR China
| | - Qianqian Qiu
- a Center of Drug Discovery, State Key Laboratory of Natural Medicines , China Pharmaceutical University , Nanjing , PR China
| | - Xinqian Geng
- b Department of Endocrinology and Metabolism , Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Clinical Center for Diabetes , Shanghai , PR China
| | - Jianyong Yang
- a Center of Drug Discovery, State Key Laboratory of Natural Medicines , China Pharmaceutical University , Nanjing , PR China
| | - Wenlong Huang
- a Center of Drug Discovery, State Key Laboratory of Natural Medicines , China Pharmaceutical University , Nanjing , PR China.,c Jiangsu Key Laboratory of Drug Discovery for Metabolic Disease , China Pharmaceutical University , Nanjing , PR China
| | - Hai Qian
- a Center of Drug Discovery, State Key Laboratory of Natural Medicines , China Pharmaceutical University , Nanjing , PR China.,c Jiangsu Key Laboratory of Drug Discovery for Metabolic Disease , China Pharmaceutical University , Nanjing , PR China
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22
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Ito R, Tsujihata Y, Suzuki M, Miyawaki K, Matsuda K, Takeuchi K. Fasiglifam/TAK-875, a Selective GPR40 Agonist, Improves Hyperglycemia in Rats Unresponsive to Sulfonylureas and Acts Additively with Sulfonylureas. ACTA ACUST UNITED AC 2016; 357:217-27. [DOI: 10.1124/jpet.115.230730] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 01/21/2016] [Indexed: 02/01/2023]
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Abstract
FFA1 is a G protein-coupled receptor activated by medium- to long-chain fatty acids. FFA1 plays important roles in various physiological processes such as insulin secretion and energy metabolism. FFA1 expressed on pancreatic β-cells and intestine contributes to insulin and incretin secretion, respectively. These physiological functions of FFA1 are interesting as an attractive drug target for type II diabetes and metabolic disorders. A number of synthetic FFA1 ligands have been developed and they have contributed to our current understanding of the physiological and pathophysiological functions of FFA1 both in in vitro and in vivo studies. In addition, these synthetic ligands also provided information on the structure-activity relationships of FFA1 ligands. Further, FFA1 protein crystallized with one of the high affinity agonist leads provided useful insights for the development of more effective ligands. Among FFA1 ligands, several compounds have been further investigated in the clinical trials. Thus, FFA1 ligands have great potential as drug candidates. In this section, recent progress about FFA1 ligands and the possibility of their clinical use are described.
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Philippe C, Wauquier F, Lyan B, Coxam V, Wittrant Y. GPR40, a free fatty acid receptor, differentially impacts osteoblast behavior depending on differentiation stage and environment. Mol Cell Biochem 2015; 412:197-208. [DOI: 10.1007/s11010-015-2626-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Accepted: 12/08/2015] [Indexed: 11/25/2022]
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Abstract
PURPOSE OF REVIEW Nutrient-specific sensor systems in enteroendocrine cells detect intestinal contents and cause gut hormone release upon activation. Among these peptide hormones, the incretins glucose-dependent insulinotropic polypeptide and glucagon-like peptide 1 are of particular interest by their role in glucose homeostasis, metabolic control and for proper ß-cell function. This review focuses on intestinal nutrient-sensing processes and their role in health and disease. RECENT FINDINGS All macronutrients, respectively, their digestion products can cause incretin release by targeting specific sensors. Luminal glucose is the strongest stimulant for incretin release with the Na-dependent glucose transporter as the prime sensor. For peptides, the H-dependent peptide transporter together with calcium-sensing-receptor act as a sensing system. That transporters can function as nutrient-sensing 'transceptors' is conceptually new as G-protein coupled receptors so far were thought to be the sensing entities. This still holds true for GPR40 and GPR120 as sensors for medium/long-chain fatty acids and GPR41 and GPR43 for microbiota-derived short-chain fatty acids. Synthetic agonists for these receptors show impressive effects on glucagon-like peptide 1 output and glycemic control. Moreover, the remarkable and immediate antidiabetic effects of bariatric surgery/gastric bypass put intestinal nutrient sensing into focus of new strategies for metabolic control. SUMMARY Targeting the intestinal nutrient-sensing machinery by dietary and/or pharmacological means holds promises in particular for treatment of type 2 diabetes. This interest may help to better understand the nutrient-sensing processes and the involvement of the intestine in overall endocrine, neuronal and metabolic control.
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Affiliation(s)
- Tamara Zietek
- ZIEL - Institute for Food & Health, Technische Universität München, Freising, Germany
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Ou HY, Wu HT, Lu FH, Su YC, Hung HC, Wu JS, Yang YC, Wu CL, Chang CJ. Activation of free fatty acid receptor 1 improves hepatic steatosis through a p38-dependent pathway. J Mol Endocrinol 2014; 53:165-74. [PMID: 25008074 DOI: 10.1530/jme-14-0003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Hepatic steatosis is highly correlated with insulin resistance and diabetes. Although, it has been demonstrated that activation of free fatty acid receptor 1 (FFAR1) by agonists showed benefits for the improvement of diabetes, the effects of FFAR1 agonists on hepatic steatosis were unknown. In this study, a high fat diet (HFD)-induced hepatic steatosis animal model was utilized to evaluate the effects of an FFAR1 agonist, GW9508, on hepatic lipid accumulation, and HepG2 hepatoma cells were also used to clarify the possible mechanisms. Administration of GW9508 significantly decreased the hepatic lipid accumulation with decreased expressions of lipogenesis-related proteins in HFD mice. Knockdown of hepatic Ffar1 by lentiviral vectors containing short hairpin RNA targeted to Ffar1 diminished the effect of GW9508 in HFD mice. In addition, GW9508 decreased oleic acid-induced lipid accumulation in HepG2 cells by decreases in the expression of lipogenesis-related proteins. Moreover, GW9508 downregulated the expression of sterol regulatory element-binding protein 1 (SREBP1) through a p38-dependent pathway, whereas knockdown of Ffar1 in HepG2 cells diminished the effect of GW9508 on the decrease in SREBP1. Considering all these results together, GW9508 exerts a therapeutic effect to improve hepatic steatosis through a p38-dependent pathway. Thus, investigation of chemicals that act on FFAR1 might be a new strategy for the treatment of hepatic steatosis.
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Affiliation(s)
- Horng-Yih Ou
- Division of Endocrinology and MetabolismDepartment of Internal Medicine, National Cheng Kung University Hospital, 138, Sheng-Li Road, Tainan 70403, TaiwanResearch Center of Herbal MedicineNew Drugs, and Nutritional Supplements, National Cheng Kung University, Tainan, TaiwanDepartment of Family MedicineNational Cheng Kung University Hospital, 138, Sheng-Li Road, Tainan 70403, TaiwanCollege of MedicineInstitute of Basic Medical Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Hung-Tsung Wu
- Division of Endocrinology and MetabolismDepartment of Internal Medicine, National Cheng Kung University Hospital, 138, Sheng-Li Road, Tainan 70403, TaiwanResearch Center of Herbal MedicineNew Drugs, and Nutritional Supplements, National Cheng Kung University, Tainan, TaiwanDepartment of Family MedicineNational Cheng Kung University Hospital, 138, Sheng-Li Road, Tainan 70403, TaiwanCollege of MedicineInstitute of Basic Medical Sciences, National Cheng Kung University, Tainan, Taiwan Division of Endocrinology and MetabolismDepartment of Internal Medicine, National Cheng Kung University Hospital, 138, Sheng-Li Road, Tainan 70403, TaiwanResearch Center of Herbal MedicineNew Drugs, and Nutritional Supplements, National Cheng Kung University, Tainan, TaiwanDepartment of Family MedicineNational Cheng Kung University Hospital, 138, Sheng-Li Road, Tainan 70403, TaiwanCollege of MedicineInstitute of Basic Medical Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Feng-Hwa Lu
- Division of Endocrinology and MetabolismDepartment of Internal Medicine, National Cheng Kung University Hospital, 138, Sheng-Li Road, Tainan 70403, TaiwanResearch Center of Herbal MedicineNew Drugs, and Nutritional Supplements, National Cheng Kung University, Tainan, TaiwanDepartment of Family MedicineNational Cheng Kung University Hospital, 138, Sheng-Li Road, Tainan 70403, TaiwanCollege of MedicineInstitute of Basic Medical Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Yu-Chu Su
- Division of Endocrinology and MetabolismDepartment of Internal Medicine, National Cheng Kung University Hospital, 138, Sheng-Li Road, Tainan 70403, TaiwanResearch Center of Herbal MedicineNew Drugs, and Nutritional Supplements, National Cheng Kung University, Tainan, TaiwanDepartment of Family MedicineNational Cheng Kung University Hospital, 138, Sheng-Li Road, Tainan 70403, TaiwanCollege of MedicineInstitute of Basic Medical Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Hao-Chang Hung
- Division of Endocrinology and MetabolismDepartment of Internal Medicine, National Cheng Kung University Hospital, 138, Sheng-Li Road, Tainan 70403, TaiwanResearch Center of Herbal MedicineNew Drugs, and Nutritional Supplements, National Cheng Kung University, Tainan, TaiwanDepartment of Family MedicineNational Cheng Kung University Hospital, 138, Sheng-Li Road, Tainan 70403, TaiwanCollege of MedicineInstitute of Basic Medical Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Jin-Shang Wu
- Division of Endocrinology and MetabolismDepartment of Internal Medicine, National Cheng Kung University Hospital, 138, Sheng-Li Road, Tainan 70403, TaiwanResearch Center of Herbal MedicineNew Drugs, and Nutritional Supplements, National Cheng Kung University, Tainan, TaiwanDepartment of Family MedicineNational Cheng Kung University Hospital, 138, Sheng-Li Road, Tainan 70403, TaiwanCollege of MedicineInstitute of Basic Medical Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Yi-Ching Yang
- Division of Endocrinology and MetabolismDepartment of Internal Medicine, National Cheng Kung University Hospital, 138, Sheng-Li Road, Tainan 70403, TaiwanResearch Center of Herbal MedicineNew Drugs, and Nutritional Supplements, National Cheng Kung University, Tainan, TaiwanDepartment of Family MedicineNational Cheng Kung University Hospital, 138, Sheng-Li Road, Tainan 70403, TaiwanCollege of MedicineInstitute of Basic Medical Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Chao-Liang Wu
- Division of Endocrinology and MetabolismDepartment of Internal Medicine, National Cheng Kung University Hospital, 138, Sheng-Li Road, Tainan 70403, TaiwanResearch Center of Herbal MedicineNew Drugs, and Nutritional Supplements, National Cheng Kung University, Tainan, TaiwanDepartment of Family MedicineNational Cheng Kung University Hospital, 138, Sheng-Li Road, Tainan 70403, TaiwanCollege of MedicineInstitute of Basic Medical Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Chih-Jen Chang
- Division of Endocrinology and MetabolismDepartment of Internal Medicine, National Cheng Kung University Hospital, 138, Sheng-Li Road, Tainan 70403, TaiwanResearch Center of Herbal MedicineNew Drugs, and Nutritional Supplements, National Cheng Kung University, Tainan, TaiwanDepartment of Family MedicineNational Cheng Kung University Hospital, 138, Sheng-Li Road, Tainan 70403, TaiwanCollege of MedicineInstitute of Basic Medical Sciences, National Cheng Kung University, Tainan, Taiwan Division of Endocrinology and MetabolismDepartment of Internal Medicine, National Cheng Kung University Hospital, 138, Sheng-Li Road, Tainan 70403, TaiwanResearch Center of Herbal MedicineNew Drugs, and Nutritional Supplements, National Cheng Kung University, Tainan, TaiwanDepartment of Family MedicineNational Cheng Kung University Hospital, 138, Sheng-Li Road, Tainan 70403, TaiwanCollege of MedicineInstitute of Basic Medical Sciences, National Cheng Kung University, Tainan, Taiwan
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Tsujihata Y. [Discovery and development of a selective GPR40/FFAR1 agonist, fasiglifam, for treatment of type 2 diabetes mellitus]. Nihon Yakurigaku Zasshi 2014; 144:59-63. [PMID: 25109517 DOI: 10.1254/fpj.144.59] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
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Abstract
Free fatty acids (FFAs) exert both positive and negative effects on beta cell survival and insulin secretory function, depending on concentration, duration, and glucose abundance. Lipid signals are mediated not only through metabolic pathways, but also through cell surface and nuclear receptors. Toxicity is modulated by positive signals arising from circulating factors such as hormones, growth factors and incretins, as well as negative signals such as inflammatory mediators and cytokines. Intracellular mechanisms of lipotoxicity include metabolic interference and cellular stress responses such as oxidative stress, endoplasmic reticulum (ER) stress, and possibly autophagy. New findings strengthen an old hypothesis that lipids may also impair compensatory beta cell proliferation. Clinical observations continue to support a role for lipid biology in the risk and progression of both type 1 (T1D) and type 2 diabetes (T2D). This review summarizes recent work in this important, rapidly evolving field.
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Affiliation(s)
- Rohit B Sharma
- Diabetes Center of Excellence, University of Massachusetts Medical School, 368 Plantation Street, Worcester, MA, 01605, USA
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Sunil V, Verma MK, Oommen AM, Sadasivuni M, Singh J, Vijayraghav DN, Chandravanshi B, Shetty J, Biswas S, Dandu A, Moolemath Y, Venkataranganna MV, Somesh BP, Jagannath MR. CNX-011-67, a novel GPR40 agonist, enhances glucose responsiveness, insulin secretion and islet insulin content in n-STZ rats and in islets from type 2 diabetic patients. BMC Pharmacol Toxicol 2014; 15:19. [PMID: 24666736 PMCID: PMC3994293 DOI: 10.1186/2050-6511-15-19] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Accepted: 03/19/2014] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND GPR40 is a G-protein coupled receptor regulating free fatty acid induced and also glucose induced insulin secretion. We generated neonatally-streptozotocin-treated female rats (n-STZ) and treated them with CNX-011-67, a GPR40 agonist to examine the role of GPR40 in modulation of glucose metabolism, insulin secretion and content. METHODS Female n-STZ animals were orally administered with CNX-011-67 (15 mg/kg body weight, twice daily) or with vehicle for 8 weeks (n = 8 per group). Glucose tolerance in treated animals and insulin secretion, islet insulin content and gene expression in isolated islets were determined. Islets from type 2 diabetic mellitus (T2DM) patients were treated with different concentrations of glucose in presence or absence of CNX-011-67 and insulin secretion was measured. RESULTS Treatment of n-STZ rats with GPR40 agonist CNX-011-67 enhanced insulin secretion in response to oral glucose load on day 0 and this response persisted during the treatment period. The treatment also produced a 'memory effect' during which insulin secretion in response to oral glucose load remained enhanced, for a week, even in absence of the agonist. Activation of GPR40 enhanced responsiveness of islets to glucose and increased glucose induced insulin secretion and islet insulin content. An increase in islet mRNA expression of GCK, PDX1, insulin and PC was also observed. Acute treatment of islets from n-STZ rats with GPR40 agonist enhanced cellular ATP content. Activation of GPR40 enhanced mitochondrial calcium level in NIT-1 insulinoma cells. CNX-011-67 increased insulin secretion in islets from T2DM patients which were non-responsive to increased glucose concentration CONCLUSIONS Our data provide evidence that activation of GPR40 with CNX-011-67 stimulates glucose metabolism, enhances glucose responsiveness, increases insulin secretion and content and that pharmacological activation of GPR40 will prove beneficial for treatment of T2DM.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | - Madanahalli R Jagannath
- Connexios Life Sciences Pvt Ltd, #49, "SHILPA VIDYA" 1st Main, 3rd Phase, JP Nagar, Bangalore 560078, India.
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Watterson KR, Hudson BD, Ulven T, Milligan G. Treatment of type 2 diabetes by free Fatty Acid receptor agonists. Front Endocrinol (Lausanne) 2014; 5:137. [PMID: 25221541 PMCID: PMC4147718 DOI: 10.3389/fendo.2014.00137] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Accepted: 08/07/2014] [Indexed: 12/11/2022] Open
Abstract
Dietary free fatty acids (FFAs), such as ω-3 fatty acids, regulate metabolic and anti-inflammatory processes, with many of these effects attributed to FFAs interacting with a family of G protein-coupled receptors. Selective synthetic ligands for free fatty acid receptors (FFA1-4) have consequently been developed as potential treatments for type 2 diabetes (T2D). In particular, clinical studies show that Fasiglifam, an agonist of the long-chain FFA receptor, FFA1, improved glycemic control and reduced HbA1c levels in T2D patients, with a reduced risk of hypoglycemia. However, this ligand was removed from clinical trials due to potential liver toxicity and determining if this is a target or a ligand-specific feature is now of major importance. Pre-clinical studies also show that FFA4 agonism increases insulin sensitivity, induces weight loss, and reduces inflammation and the metabolic and anti-inflammatory effects of short chain fatty acids (SCFAs) are linked with FFA2 and FFA3 activation. In this review, we therefore show that FFA receptor agonism is a potential clinical target for T2D treatment and discuss ongoing drug development programs within industry and academia aimed at improving the safety and effectiveness of these potential treatments.
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Affiliation(s)
- Kenneth R. Watterson
- Molecular Pharmacology Group, Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Brian D. Hudson
- Molecular Pharmacology Group, Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Trond Ulven
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Odense, Denmark
| | - Graeme Milligan
- Molecular Pharmacology Group, Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
- *Correspondence: Graeme Milligan, Molecular Pharmacology Group, Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, Scotland, UK e-mail:
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