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Safavi F, Andrade-Cetto A, Escandón-Rivera SM, Espinoza-Hernández FA. Assessing the potential fasting and postprandial mechanisms involved in the acute hypoglycemic and anti-hyperglycemic effects of four selected plants from Iran used in traditional Persian medicine. JOURNAL OF ETHNOPHARMACOLOGY 2025; 336:118742. [PMID: 39197806 DOI: 10.1016/j.jep.2024.118742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2024] [Revised: 08/14/2024] [Accepted: 08/25/2024] [Indexed: 09/01/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE In traditional Persian medicine (TPM), people often use herbal infusions as a dosage form to treat diseases related to hyperglycemia, known as 'dam-kardeh'. Traditionally, herbal preparations of Eryngium bungei Boiss. (E. b), Tragopogon buphthalmoides (DC.) Boiss. (T. b), Salvia hydrangea DC. ex Benth. (S. h), and Juniperus polycarpos K. Koch. (J. p) are used to manage diabetes in Iran. However, there is no evidence of their effectiveness in controlling glucose levels and their mechanisms remain unclear. AIM OF THE STUDY This study aimed to investigate whether traditional doses of plant infusions can have hypoglycemic and/or anti-hyperglycemic effects during fasting and/or postprandial states and establish the basis for future research on their potential mechanisms of action. MATERIALS AND METHODS The effects of traditional doses of herbal extracts on blood glucose levels in STZ-NA-induced hyperglycemic rats were investigated in 2-h acute tests during fasting and postprandial states (with a glucose load). In addition, the potential inhibitory effect in vitro of enzymes involved in relevant pathways, such as gluconeogenesis (fructose-1,6-bisphosphatase, FBPase and glucose-6-phosphatase, G6Pase), carbohydrate breakdown (intestinal α-glucosidases), and insulin sensitivity (protein tyrosine phosphatase 1B, PTP-1B) was evaluated. Acute toxicity tests were carried out and HPLC-SQ-TOF was used to analyze the chemical profiles of the plant extracts. RESULTS In the fasting state, T. b, S. h, and E. b were as effective as glibenclamide in lowering blood glucose levels in hyperglycemic rats. Moreover, all three suppressed G6Pase and FBPase enzymatic activity by 90-97% and 80-91%, respectively. On the other hand, significant postprandial hypoglycemic efficacy was observed for E. b, S. h, and T. b. Based on the AUC values, T. b caused a reduction comparable to the therapeutic efficacy of repaglinide. When investigating the possible mechanisms of action involved in this activity, E. b, S. h, and T. b showed significant inhibition of PTP-1B in vitro (>70%). Finally, all plant extracts showed no signs of acute toxicity. Several compounds that may contribute to biological activities were identified, including phenolic acids and flavonoid glycosides. CONCLUSIONS The present study supports the traditional use of T. b, E. b and S. h for the control of diabetes in the fasting and postprandial state. Moreover, these plants were found to be rich in bioactive compounds with hypoglycemic and antihyperglycemic activities. On the other hand, J. p, showed a modest effect only in the fasting state and after 90 min. Further studies are needed to expand these results by analyzing the chemical composition and using complementary experimental models.
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Affiliation(s)
- Fereshteh Safavi
- Laboratorio de Etnofarmacología, Departamento de Biología Celular, Facultad de Ciencias, Universidad Nacional Autónoma de México, Av. Universidad 3000, Circuito Exterior S/N, Delegación Coyoacán, C.P, 04510, Ciudad Universitaria, Ciudad de México, Mexico
| | - Adolfo Andrade-Cetto
- Laboratorio de Etnofarmacología, Departamento de Biología Celular, Facultad de Ciencias, Universidad Nacional Autónoma de México, Av. Universidad 3000, Circuito Exterior S/N, Delegación Coyoacán, C.P, 04510, Ciudad Universitaria, Ciudad de México, Mexico.
| | - Sonia M Escandón-Rivera
- Laboratorio de Etnofarmacología, Departamento de Biología Celular, Facultad de Ciencias, Universidad Nacional Autónoma de México, Av. Universidad 3000, Circuito Exterior S/N, Delegación Coyoacán, C.P, 04510, Ciudad Universitaria, Ciudad de México, Mexico
| | - Fernanda A Espinoza-Hernández
- Laboratorio de Etnofarmacología, Departamento de Biología Celular, Facultad de Ciencias, Universidad Nacional Autónoma de México, Av. Universidad 3000, Circuito Exterior S/N, Delegación Coyoacán, C.P, 04510, Ciudad Universitaria, Ciudad de México, Mexico
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Mai VH, Ponce-Zea JE, Doan TP, Vu QH, Ryu B, Lee CH, Oh WK. Chalcone-Monoterpene Derivatives from the Buds of Cleistocalyx operculatus and Their Potential as Protein Tyrosine Phosphatase 1B Inhibitors. JOURNAL OF NATURAL PRODUCTS 2024; 87:1903-1913. [PMID: 39046805 DOI: 10.1021/acs.jnatprod.4c00249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/27/2024]
Abstract
Four new compounds, racemic chalcone-monoterpene hybrids (1-3) and a chalcone (9), along with nine known compounds (4-8, 10-13), have been isolated from the buds of Cleistocalyx operculatus. The chemical structures of the isolated compounds were identified through NMR data analysis and confirmed by computational methods, including electronic circular dichroism (ECD) calculations, and further synthetic approaches. Compounds 1-5 were synthesized via a Diels-Alder reaction, a process informed by biomimetic condensation studies that combined chalcones and monoterpenes. These synthetic approaches also yielded various unnatural chalcone-monoterpene derivatives (14-23). The inhibitory effects on protein tyrosine phosphatase 1B (PTP1B) of both naturally isolated and synthetically obtained compounds were evaluated. Compounds 4, 9, 13, and 16b exhibited potent PTP1B inhibitory activity, with IC50 values ranging from 0.9 ± 0.2 to 3.9 ± 0.7 μM. The enantiomers (+)-4 and (-)-16b showed enhanced activity compared to their respective enantiomers. Kinetic studies indicate that all active compounds inhibit PTP1B through mixed mechanisms, and molecular docking simulations agree with the experimental assays on PTP1B. Our results suggest that chalcone-meroterpene adducts from the buds of C. operculatus exhibit potential as antidiabetic agents, partly due to their PTP1B enzyme inhibition.
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Affiliation(s)
- Van-Hieu Mai
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Jorge Eduardo Ponce-Zea
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Thi-Phuong Doan
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Quang Huy Vu
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Byeol Ryu
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Chul-Ho Lee
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Republic of Korea
| | - Won-Keun Oh
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
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Designed multiple ligands for the treatment of type 2 diabetes mellitus and its complications: Discovery of (5-arylidene-4-oxo-2-thioxothiazolidin-3-yl)alkanoic acids active as novel dual-targeted PTP1B/AKR1B1 inhibitors. Eur J Med Chem 2023; 252:115270. [PMID: 36934484 DOI: 10.1016/j.ejmech.2023.115270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 03/08/2023] [Accepted: 03/08/2023] [Indexed: 03/15/2023]
Abstract
Type 2 diabetes mellitus (T2DM) is a serious chronic disease with an alarmingly growing worldwide prevalence. Current treatment of T2DM mainly relies on drug combinations in order to control blood glucose levels and consequently prevent the onset of hyperglycaemia-related complications. The development of multiple-targeted drugs recently emerged as an attractive alternative to drug combinations for the treatment of complex diseases with multifactorial pathogenesis, such as T2DM. Protein tyrosine phosphatase 1B (PTP1B) and aldose reductase (AKR1B1) are two enzymes crucially involved in the development of T2DM and its chronic complications and, therefore, dual inhibitors targeted to both these enzymes could provide novel agents for the treatment of this complex pathological condition. In continuing our search for dual-targeted PTP1B/AKR1B1 inhibitors, we designed new (5-arylidene-4-oxo-2-thioxothiazolidin-3-yl)alkanoic acids. Among them, 3-(4-phenylbutoxy)benzylidene derivatives 6f and 7f, endowed with interesting inhibitory activity against both targets, proved to control specific cellular pathways implicated in the development of T2DM and related complications.
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Ullah I, Hassan M, Khan KM, Sajid M, Umar M, Hassan S, Ullah A, El-Serehy HA, Charifi W, Yasmin H. Thiourea derivatives inhibit key diabetes-associated enzymes and advanced glycation end-product formation as a treatment for diabetes mellitus. IUBMB Life 2023; 75:161-180. [PMID: 36565478 DOI: 10.1002/iub.2699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 11/14/2022] [Indexed: 12/25/2022]
Abstract
This study was designed to screen novel thiourea derivatives against different enzymes, such as α-amylase, α-glucosidase, protein tyrosine phosphatase 1 B, and advanced glycated end product (AGEs). A cytotoxicity analysis was performed using rat L6 myotubes and molecular docking analysis was performed to map the binding interactions between the active compounds and α-amylase and α-glucosidase. The data revealed the potency of five compounds, including E (1-(2,4-difluorophenyl)-3-(3,4-dimethyl phenyl) thiourea), AG (1-(2-methoxy-5-(trifluoromethyl) phenyl)-3-(3-methoxy phenyl) thiourea), AF (1-(2,4-dichlorophenyl)-3-(4-ethylphenyl) thiourea), AD (1-(2,4-dichlorophenyl)-3-(4-ethylphenyl) thiourea), and AH (1-(2,4-difluorophenyl)-3-(2-iodophenyl) thiourea), showed activity against α-amylase. The corresponding percentage inhibitions were found to be 85 ± 1.9, 82 ± 0.7, 75 ± 1.2, 72 ± 0.4, and 65 ± 1.1%, respectively. These compounds were then screened using in vitro assays. Among them, AH showed the highest activity against α-glucosidase, AGEs, and PTP1B, with percentage inhibitions of 86 ± 0.4% (IC50 = 47.9 μM), 85 ± 0.7% (IC50 = 49.51 μM), and 85 ± 0.5% (IC50 = 79.74 μM), respectively. Compound AH showed an increased glucose uptake at a concentration of 100 μM. Finally, an in vivo study was conducted using a streptozotocin-induced diabetic mouse model and PTP1B expression was assessed using real-time PCR. Additionally, we examined the hypoglycemic effect of compound AH in diabetic rats compared to the standard drug glibenclamide.
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Affiliation(s)
- Imran Ullah
- Department of Biochemistry, Hazara University Mansehra, Mansehra, Khyber Pakhtunkhwa, Pakistan
| | - Mukhtiar Hassan
- Department of Biochemistry, Hazara University Mansehra, Mansehra, Khyber Pakhtunkhwa, Pakistan
| | - Khalid M Khan
- H.E.J Research Institute of Chemistry, University of Karachi, Karachi, Pakistan
| | - Muhammad Sajid
- Department of Biochemistry, Hazara University Mansehra, Mansehra, Khyber Pakhtunkhwa, Pakistan
| | - Muhammad Umar
- Department of Orthopaedics, Shenzhen University General Hospital, Shenzhen, Guangdong, People's Republic of China
| | - Said Hassan
- Institute of Biotechnology and Microbiology, Bacha Khan University Charsadda, Charsadda, Khyber Pakhtunkhwa, Pakistan
| | - Amin Ullah
- Department of Health and Biological Sciecnes, Abasyn University Peshawar, Peshawar, Khyber Pakhtunkhwa, Pakistan
| | - Hamed A El-Serehy
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Wafa Charifi
- Cochin Institute, University of Paris, INSERM, U1016, Paris, France
| | - Humaira Yasmin
- Department of Biosciences, COMSATS University Islamabad, Islamabad, Pakistan
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Liu Z, Gao H, Zhao Z, Huang M, Wang S, Zhan J. Status of research on natural protein tyrosine phosphatase 1B inhibitors as potential antidiabetic agents: Update. Biomed Pharmacother 2023; 157:113990. [PMID: 36459712 DOI: 10.1016/j.biopha.2022.113990] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 10/29/2022] [Accepted: 11/07/2022] [Indexed: 12/02/2022] Open
Abstract
Protein tyrosine phosphatase 1B (PTP1B) is a crucial therapeutic target for multiple human diseases comprising type 2 diabetes (T2DM) and obesity because it is a seminal part of a negative regulator in both insulin and leptin signaling pathways. PTP1B inhibitors increase insulin receptor sensitivity and have the ability to cure insulin resistance-related diseases. However, the few PTP1B inhibitors that entered the clinic (Ertiprotafib, ISIS-113715, Trodusquemine, and JTT-551) were discontinued due to side effects or low selectivity. Molecules with broad chemical diversity extracted from natural products have been reported to be potent PTP1B inhibitors with few side effects. This article summarizes the recent PTP1B inhibitors extracted from natural products, clarifying the current research progress, and providing new options for designing new and effective PTP1B inhibitors.
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Affiliation(s)
- Zhenyang Liu
- School of Life Science, Ludong University, Yantai, Shandong 264025, China
| | - Hongwei Gao
- School of Life Science, Ludong University, Yantai, Shandong 264025, China.
| | - Ziyu Zhao
- School of Life Science, Ludong University, Yantai, Shandong 264025, China
| | - Mengrui Huang
- School of Life Science, Ludong University, Yantai, Shandong 264025, China
| | - Shengnan Wang
- School of Life Science, Ludong University, Yantai, Shandong 264025, China
| | - Jiuyu Zhan
- School of Life Science, Ludong University, Yantai, Shandong 264025, China.
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Behl T, Gupta A, Sehgal A, Albarrati A, Albratty M, Meraya AM, Najmi A, Bhatia S, Bungau S. Exploring protein tyrosine phosphatases (PTP) and PTP-1B inhibitors in management of diabetes mellitus. Biomed Pharmacother 2022; 153:113405. [DOI: 10.1016/j.biopha.2022.113405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 07/07/2022] [Accepted: 07/08/2022] [Indexed: 11/02/2022] Open
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7
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Carpena M, Garcia-Perez P, Garcia-Oliveira P, Chamorro F, Otero P, Lourenço-Lopes C, Cao H, Simal-Gandara J, Prieto MA. Biological properties and potential of compounds extracted from red seaweeds. PHYTOCHEMISTRY REVIEWS : PROCEEDINGS OF THE PHYTOCHEMICAL SOCIETY OF EUROPE 2022; 22:1-32. [PMID: 35791430 PMCID: PMC9247959 DOI: 10.1007/s11101-022-09826-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 05/22/2022] [Indexed: 05/03/2023]
Abstract
Macroalgae have been recently used for different applications in the food, cosmetic and pharmaceutical industry since they do not compete for land and freshwater against other resources. Moreover, they have been highlighted as a potential source of bioactive compounds. Red algae (Rhodophyta) are the largest group of seaweeds, including around 6000 different species, thus it can be hypothesized that they are a potential source of bioactive compounds. Sulfated polysaccharides, mainly agar and carrageenans, are the most relevant and exploited compounds of red algae. Other potential molecules are essential fatty acids, phycobiliproteins, vitamins, minerals, and other secondary metabolites. All these compounds have been demonstrated to exert several biological activities, among which antioxidant, anti-inflammatory, antitumor, and antimicrobial properties can be highlighted. Nevertheless, these properties need to be further tested on in vivo experiments and go in-depth in the study of the mechanism of action of the specific molecules and the understanding of the structure-activity relation. At last, the extraction technologies are essential for the correct isolation of the molecules, in a cost-effective way, to facilitate the scale-up of the processes and their further application by the industry. This manuscript is aimed at describing the fundamental composition of red algae and their most studied biological properties to pave the way to the utilization of this underused resource.
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Affiliation(s)
- M. Carpena
- Nutrition and Bromatology Group, Department of Analytical Chemistry and Food Science, Faculty of Science, Universidade de Vigo, E-32004 Ourense, Spain
| | - P. Garcia-Perez
- Nutrition and Bromatology Group, Department of Analytical Chemistry and Food Science, Faculty of Science, Universidade de Vigo, E-32004 Ourense, Spain
| | - P. Garcia-Oliveira
- Nutrition and Bromatology Group, Department of Analytical Chemistry and Food Science, Faculty of Science, Universidade de Vigo, E-32004 Ourense, Spain
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolonia, 5300-253 Bragança, Portugal
| | - F. Chamorro
- Nutrition and Bromatology Group, Department of Analytical Chemistry and Food Science, Faculty of Science, Universidade de Vigo, E-32004 Ourense, Spain
| | - Paz Otero
- Nutrition and Bromatology Group, Department of Analytical Chemistry and Food Science, Faculty of Science, Universidade de Vigo, E-32004 Ourense, Spain
| | - C. Lourenço-Lopes
- Nutrition and Bromatology Group, Department of Analytical Chemistry and Food Science, Faculty of Science, Universidade de Vigo, E-32004 Ourense, Spain
| | - Hui Cao
- Nutrition and Bromatology Group, Department of Analytical Chemistry and Food Science, Faculty of Science, Universidade de Vigo, E-32004 Ourense, Spain
| | - J. Simal-Gandara
- Nutrition and Bromatology Group, Department of Analytical Chemistry and Food Science, Faculty of Science, Universidade de Vigo, E-32004 Ourense, Spain
| | - M. A. Prieto
- Nutrition and Bromatology Group, Department of Analytical Chemistry and Food Science, Faculty of Science, Universidade de Vigo, E-32004 Ourense, Spain
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolonia, 5300-253 Bragança, Portugal
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Rath P, Ranjan A, Ghosh A, Chauhan A, Gurnani M, Tuli HS, Habeeballah H, Alkhanani MF, Haque S, Dhama K, Verma NK, Jindal T. Potential Therapeutic Target Protein Tyrosine Phosphatase-1B for Modulation of Insulin Resistance with Polyphenols and Its Quantitative Structure–Activity Relationship. Molecules 2022; 27:molecules27072212. [PMID: 35408611 PMCID: PMC9000704 DOI: 10.3390/molecules27072212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 03/10/2022] [Accepted: 03/17/2022] [Indexed: 11/17/2022] Open
Abstract
The increase in the number of cases of type 2 diabetes mellitus (T2DM) and the complications associated with the side effects of chemical/synthetic drugs have raised concerns about the safety of the drugs. Hence, there is an urgent need to explore and identify natural bioactive compounds as alternative drugs. Protein tyrosine phosphatase 1B (PTP1B) functions as a negative regulator and is therefore considered as one of the key protein targets modulating insulin signaling and insulin resistance. This article deals with the screening of a database of polyphenols against PTP1B activity for the identification of a potential inhibitor. The research plan had two clear objectives. Under first objective, we conducted a quantitative structure–activity relationship analysis of flavonoids with PTP1B that revealed the strongest correlation (R2 = 93.25%) between the number of aromatic bonds (naro) and inhibitory concentrations (IC50) of PTP1B. The second objective emphasized the binding potential of the selected polyphenols against the activity of PTP1B using molecular docking, molecular dynamic (MD) simulation and free energy estimation. Among all the polyphenols, silydianin, a flavonolignan, was identified as a lead compound that possesses drug-likeness properties, has a higher negative binding energy of −7.235 kcal/mol and a pKd value of 5.2. The free energy-based binding affinity (ΔG) was estimated to be −7.02 kcal/mol. MD simulation revealed the stability of interacting residues (Gly183, Arg221, Thr263 and Asp265). The results demonstrated that the identified polyphenol, silydianin, could act as a promising natural PTP1B inhibitor that can modulate the insulin resistance.
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Affiliation(s)
- Prangya Rath
- Amity Institute of Environmental Sciences, Amity University, Noida 201303, India; (P.R.); (M.G.)
| | - Anuj Ranjan
- Academy of Biology and Biotechnology, Southern Federal University, 344006 Rostov-on-Don, Russia
- Correspondence: (A.R.); (A.G.); Tel.: +91-999-090-7571 (A.R.); +91-967-862-9146 (A.G.)
| | - Arabinda Ghosh
- Microbiology Division, Department of Botany, Gauhati University, Guwahati 781014, India
- Correspondence: (A.R.); (A.G.); Tel.: +91-999-090-7571 (A.R.); +91-967-862-9146 (A.G.)
| | - Abhishek Chauhan
- Amity Institute of Environmental Toxicology Safety and Management, Amity University, Noida 201303, India; (A.C.); (T.J.)
| | - Manisha Gurnani
- Amity Institute of Environmental Sciences, Amity University, Noida 201303, India; (P.R.); (M.G.)
| | - Hardeep Singh Tuli
- Department of Biotechnology, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala 133207, India;
| | - Hamza Habeeballah
- Faculty of Applied Medical Sciences, King Abdulaziz University, Rabigh Branch, Rabigh 25732, Saudi Arabia;
| | - Mustfa F. Alkhanani
- Emergency Service Department, College of Applied Sciences, AlMaarefa University, Riyadh 11597, Saudi Arabia;
| | - Shafiul Haque
- Research and Scientific Studies Unit, College of Nursing and Allied Health Sciences, Jazan University, Jazan 45142, Saudi Arabia;
- Faculty of Medicine, Bursa Uludağ University Görükle Campus, Nilüfer 16059, Turkey
| | - Kuldeep Dhama
- Division of Pathology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly 243122, India;
| | - Naval Kumar Verma
- Homeopathy, Ministry of Ayush, Ayush Bhawan, B Block, GPO Complex INA, New Delhi 110023, India;
| | - Tanu Jindal
- Amity Institute of Environmental Toxicology Safety and Management, Amity University, Noida 201303, India; (A.C.); (T.J.)
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Akinyede KA, Oyewusi HA, Hughes GD, Ekpo OE, Oguntibeju OO. In Vitro Evaluation of the Anti-Diabetic Potential of Aqueous Acetone Helichrysum petiolare Extract (AAHPE) with Molecular Docking Relevance in Diabetes Mellitus. MOLECULES (BASEL, SWITZERLAND) 2021; 27:molecules27010155. [PMID: 35011387 PMCID: PMC8746515 DOI: 10.3390/molecules27010155] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 12/07/2021] [Accepted: 12/09/2021] [Indexed: 12/14/2022]
Abstract
Diabetes mellitus (DM) is a chronic metabolic condition that can lead to significant complications and a high fatality rate worldwide. Efforts are ramping up to find and develop novel α-glucosidase and α-amylase inhibitors that are both effective and potentially safe. Traditional methodologies are being replaced with new techniques that are less complicated and less time demanding; yet, both the experimental and computational strategies are viable and complementary in drug discovery and development. As a result, this study was conducted to investigate the in vitro anti-diabetic potential of aqueous acetone Helichrysum petiolare and B.L Burtt extract (AAHPE) using a 2-NBDG, 2-(N-(7-Nitrobenz-2-oxa-1,3-diazol-4-yl) amino)-2-deoxy-d-glucose uptake assay. In addition, we performed molecular docking of the flavonoid constituents identified and quantified by liquid chromatography-mass spectrometry (LC-MS) from AAHPE with the potential to serve as effective and safe α-amylase and α-glucosidase inhibitors, which are important in drug discovery and development. The results showed that AAHPE is a potential inhibitor of both α-amylase and α-glucosidase, with IC50 values of 46.50 ± 6.17 (µg/mL) and 37.81 ± 5.15 (µg/mL), respectively. This is demonstrated by a significant increase in the glucose uptake activity percentage in a concentration-dependent manner compared to the control, with the highest AAHPE concentration of 75 µg/mL of glucose uptake activity being higher than metformin, a standard anti-diabetic drug, in the insulin-resistant HepG2 cell line. The molecular docking results displayed that the constituents strongly bind α-amylase and α-glucosidase while achieving better binding affinities that ranged from ΔG = -7.2 to -9.6 kcal/mol (compared with acarbose ΔG = -6.1 kcal/mol) for α-amylase, and ΔG = -7.3 to -9.0 kcal/mol (compared with acarbose ΔG = -6.3 kcal/mol) for α-glucosidase. This study revealed the potential use of the H. petiolare plant extract and its phytochemicals, which could be explored to develop potent and safe α-amylase and α-glucosidase inhibitors to treat postprandial glycemic levels in diabetic patients.
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Affiliation(s)
- Kolajo Adedamola Akinyede
- Department of Medical Bioscience, University of the Western Cape, Bellville, Cape Town 7530, South Africa; (G.D.H.); (O.E.E.)
- Biochemistry Unit, Department of Science Technology, The Federal Polytechnic P.M.B.5351, Ado Ekiti 360231, Ekiti State, Nigeria;
- Correspondence: (K.A.A.); (O.O.O.); Tel.: +27-839-612-040 (K.A.A.); +27-219-538-495 (O.O.O.)
| | - Habeebat Adekilekun Oyewusi
- Biochemistry Unit, Department of Science Technology, The Federal Polytechnic P.M.B.5351, Ado Ekiti 360231, Ekiti State, Nigeria;
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, UTM, Johor Bahru 81310, Johor, Malaysia
| | - Gail Denise Hughes
- Department of Medical Bioscience, University of the Western Cape, Bellville, Cape Town 7530, South Africa; (G.D.H.); (O.E.E.)
| | - Okobi Eko Ekpo
- Department of Medical Bioscience, University of the Western Cape, Bellville, Cape Town 7530, South Africa; (G.D.H.); (O.E.E.)
- Department of Anatomy and Cellular Biology, College of Medicine and Health Sciences, Khalifa University, Abu Dhabi P.O. Box 127788, United Arab Emirates
| | - Oluwafemi Omoniyi Oguntibeju
- Phytomedicine and Phytochemistry Group, Oxidative Stress Research Centre, Department of Biomedical Sciences, Faculty of Health and Wellness Sciences, Cape Peninsula University of Technology, P.O. Box 1906, Bellville 7535, South Africa
- Correspondence: (K.A.A.); (O.O.O.); Tel.: +27-839-612-040 (K.A.A.); +27-219-538-495 (O.O.O.)
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Yamazaki H, Tsuge H, Takahashi O, Uchida R. Germacrane sesquiterpenes from leaves of Eupatorium chinense inhibit protein tyrosine phosphatase. Bioorg Med Chem Lett 2021; 53:128422. [PMID: 34710624 DOI: 10.1016/j.bmcl.2021.128422] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 10/18/2021] [Accepted: 10/19/2021] [Indexed: 11/15/2022]
Abstract
Three new germacrane-type sesquiterpene lactones (1-3) were isolated alongside seven known related congeners (4-10) from the leaves of Eupatorium chinense L. (Compositae). The planar structures of 1-3 were elucidated by their spectroscopic data, including 1D and 2D NMR spectra. The relative and absolute configurations of 1-3 were determined using NOESY experiments and electronic circular dichroism analyses. Compounds 1, 4, 5, and 7 inhibited protein tyrosine phosphatase (PTP) 1B activity with IC50 values of 25, 11, 28, and 24 μM, respectively. Among these, compound 4 exhibited an inhibitory effect on T-cell PTP (TCPTP) with an IC50 value of 25 μM. To our knowledge, this is the first study demonstrating the PTP inhibitory activity of the germacrane sesquiterpenes. The results show that compound 4 acts as an inhibitor of both PTP1B and TCPTP.
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Affiliation(s)
- Hiroyuki Yamazaki
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai 981-8558, Japan.
| | - Hayato Tsuge
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai 981-8558, Japan
| | - Ohgi Takahashi
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai 981-8558, Japan; Faculty of Pharmaceutical Sciences, Shonan University of Medical Sciences, 16-48 Kamishinano, Totsuka-ku, Yokohama 244-0806, Japan
| | - Ryuji Uchida
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai 981-8558, Japan.
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11
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Discovery of inhibitors targeting protein tyrosine phosphatase 1B using a combined virtual screening approach. Mol Divers 2021; 26:2159-2174. [PMID: 34655403 DOI: 10.1007/s11030-021-10323-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 09/21/2021] [Indexed: 10/20/2022]
Abstract
Protein tyrosine phosphatase 1B (PTP1B) acts as a therapeutic target for type 2 diabetes. However, the major challenges of PTP1B drug discovery are the poor selectivity and the weak oral bioavailability. In this study, we performed a combined virtual screening approach including multicomplex pharmacophore, molecular docking-based screening, van der Waals energy normalization, pose scaling factor, ADMET evaluation, and molecular dynamics simulation to select PTP1B inhibitors from three databases (PubChem, ChEMBL, and ZINC). We identified three potential PTP1B inhibitors, compounds 1, 4, and 5, with favorable binding energy and good oral bioavailability. The energetic and geometrical analyses show that the three compounds are stably bound to PTP1B, via occupying both the catalytic site (site A) and the proximal noncatalytic site (site B or C). Such occupancy may improve the selectivity. This work not only provided a feasible virtual screening protocol, but also suggested three potential PTP1B inhibitors for the treatment of type 2 diabetes.
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12
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Yamazaki H. Exploration of marine natural resources in Indonesia and development of efficient strategies for the production of microbial halogenated metabolites. J Nat Med 2021; 76:1-19. [PMID: 34415546 PMCID: PMC8732978 DOI: 10.1007/s11418-021-01557-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 07/29/2021] [Indexed: 11/12/2022]
Abstract
Nature is a prolific source of organic products with diverse scaffolds and biological activities. The process of natural product discovery has gradually become more challenging, and advances in novel strategic approaches are essential to evolve natural product chemistry. Our focus has been on surveying untouched marine resources and fermentation to enhance microbial productive performance. The first topic is the screening of marine natural products isolated from Indonesian marine organisms for new types of bioactive compounds, such as antineoplastics, antimycobacterium substances, and inhibitors of protein tyrosine phosphatase 1B, sterol O-acyl-transferase, and bone morphogenetic protein-induced osteoblastic differentiation. The unique biological properties of marine organohalides are discussed herein and attempts to efficiently produce fungal halogenated metabolites are documented. This review presents an overview of our recent work accomplishments based on the MONOTORI study.
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Affiliation(s)
- Hiroyuki Yamazaki
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, 981-8558, Japan.
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13
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Vu TH, Delalande O, Lalli C, Reider S, Ferron S, Boustie J, Waltenberger B, Lohézic-Le Dévéhat F. Inhibitory Effects of Secondary Metabolites from the Lichen Stereocaulon evolutum on Protein Tyrosine Phosphatase 1B. PLANTA MEDICA 2021; 87:701-708. [PMID: 33618379 DOI: 10.1055/a-1334-4480] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Protein tyrosine phosphatase 1B plays a significant role in type 2 diabetes mellitus and other diseases and is therefore considered a new drug target. Within this study, an acetone extract from the lichen Stereocaulon evolutum was identified to possess strong protein tyrosine phosphatase 1B inhibition in a cell-free assay (IC50 of 11.8 µg/mL). Fractionation of this bioactive extract led to the isolation of seven known molecules belonging to the depsidones and the related diphenylethers and one new natural product, i.e., 3-butyl-3,7-dihydroxy-5-methoxy-1(3H)-isobenzofurane. The isolated compounds were evaluated for their inhibition of protein tyrosine phosphatase 1B. Two depsidones, lobaric acid and norlobaric acid, and the diphenylether anhydrosakisacaulon A potently inhibited protein tyrosine phosphatase 1B with IC50 values of 12.9, 15.1, and 16.1 µM, respectively, which is in the range of the protein tyrosine phosphatase 1B inhibitory activity of the positive control ursolic acid (IC50 of 14.4 µM). Molecular simulations performed on the eight compounds showed that i) a contact between the molecule and the four main regions of the protein is required for inhibitory activity, ii) the relative rigidity of the depsidones lobaric acid and norlobaric acid and the reactivity related to hydrogen bond donors or acceptors, which interact with protein tyrosine phosphatase 1B key amino acids, are involved in the bioactivity on protein tyrosine phosphatase 1B, iii) the cycle opening observed for diphenylethers decreased the inhibition, except for anhydrosakisacaulon A where its double bond on C-8 offsets this loss of activity, iv) the function present at C-8 is a determinant for the inhibitory effect on protein tyrosine phosphatase 1B, and v) the more hydrogen bonds with Arg221 there are, the more anchorage is favored.
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Affiliation(s)
- Thi Huyen Vu
- University of Rennes, CNRS, ISCR - UMR 6226, Rennes, France
| | | | - Claudia Lalli
- University of Rennes, CNRS, ISCR - UMR 6226, Rennes, France
| | - Stefanie Reider
- Institute of Pharmacy/Pharmacognosy, University of Innsbruck and Center for Molecular Biosciences Innsbruck (CMBI), Innsbruck, Austria
| | - Solenn Ferron
- University of Rennes, CNRS, ISCR - UMR 6226, Rennes, France
| | - Joel Boustie
- University of Rennes, CNRS, ISCR - UMR 6226, Rennes, France
| | - Birgit Waltenberger
- Institute of Pharmacy/Pharmacognosy, University of Innsbruck and Center for Molecular Biosciences Innsbruck (CMBI), Innsbruck, Austria
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14
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Indole- and Pyrazole-Glycyrrhetinic Acid Derivatives as PTP1B Inhibitors: Synthesis, In Vitro and In Silico Studies. Molecules 2021; 26:molecules26144375. [PMID: 34299651 PMCID: PMC8308021 DOI: 10.3390/molecules26144375] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/13/2021] [Accepted: 07/18/2021] [Indexed: 11/17/2022] Open
Abstract
Regulating insulin and leptin levels using a protein tyrosine phosphatase 1B (PTP1B) inhibitor is an attractive strategy to treat diabetes and obesity. Glycyrrhetinic acid (GA), a triterpenoid, may weakly inhibit this enzyme. Nonetheless, semisynthetic derivatives of GA have not been developed as PTP1B inhibitors to date. Herein we describe the synthesis and evaluation of two series of indole- and N-phenylpyrazole-GA derivatives (4a-f and 5a-f). We measured their inhibitory activity and enzyme kinetics against PTP1B using p-nitrophenylphosphate (pNPP) assay. GA derivatives bearing substituted indoles or N-phenylpyrazoles fused to their A-ring showed a 50% inhibitory concentration for PTP1B in a range from 2.5 to 10.1 µM. The trifluoromethyl derivative of indole-GA (4f) exhibited non-competitive inhibition of PTP1B as well as higher potency (IC50 = 2.5 µM) than that of positive controls ursolic acid (IC50 = 5.6 µM), claramine (IC50 = 13.7 µM) and suramin (IC50 = 4.1 µM). Finally, docking and molecular dynamics simulations provided the theoretical basis for the favorable activity of the designed compounds.
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15
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Zhao D, Zhong S. Binding mechanisms of varic acid inhibitors on protein tyrosine phosphatase 1B and in silico design of the novel derivatives. MOLECULAR SIMULATION 2021. [DOI: 10.1080/08927022.2021.1929970] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Dan Zhao
- School of Bioengineering, Dalian University of Technology, Dalian, People’s Republic of China
| | - Shijun Zhong
- School of Bioengineering, Dalian University of Technology, Dalian, People’s Republic of China
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16
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Protein tyrosine phosphatases (PTPs) in diabetes: causes and therapeutic opportunities. Arch Pharm Res 2021; 44:310-321. [PMID: 33590390 DOI: 10.1007/s12272-021-01315-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 01/26/2021] [Indexed: 10/22/2022]
Abstract
Protein tyrosine phosphatases (PTPs) have an emerging paradigm for the development of antidiabetic drugs. Herein, we provide a comprehensive overview of the relevance of PTPs to type 2 diabetes (T2D) and the therapeutic opportunities thereof, while critically evaluating the potential challenges for PTP inhibitors to be next generation antidiabetics. This review briefly discusses the structure and function of PTPs. An account of importance and relevance of PTPs in various human diseases is presented with special attention to diabetes. The PTPs relevant to T2D have been targeted by small molecule inhibitors such as natural products and synthetic compounds as well as antisense nucleic acids. This review will give better understanding of the important concepts helpful in outlining the strategies for the development of new therapeutic agents with promising antidiabetic activities.
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17
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Insulin-Mimetic Dihydroxanthyletin-Type Coumarins from Angelica decursiva with Protein Tyrosine Phosphatase 1B and α-Glucosidase Inhibitory Activities and Docking Studies of Their Molecular Mechanisms. Antioxidants (Basel) 2021; 10:antiox10020292. [PMID: 33672051 PMCID: PMC7919472 DOI: 10.3390/antiox10020292] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 02/04/2021] [Accepted: 02/08/2021] [Indexed: 01/04/2023] Open
Abstract
As a traditional medicine, Angelica decursiva has been used for the treatment of many diseases. The goal of this study was to evaluate the potential of four natural major dihydroxanthyletin-type coumarins—(+)-trans-decursidinol, Pd-C-I, Pd-C-II, and Pd-C-III—to inhibit the enzymes, protein tyrosine phosphatase 1B (PTP1B) and α-glucosidase. In the kinetic study of the PTP1B enzyme’s inhibition, we found that (+)-trans-decursidinol, Pd-C-I, and Pd-C-II led to competitive inhibition, while Pd-C-III displayed mixed-type inhibition. Moreover, (+)-trans-decursidinol exhibited competitive-type, and Pd-C-I and Pd-C-II mixed-type, while Pd-C-III showed non-competitive type inhibition of α-glucosidase. Docking simulations of these coumarins showed negative binding energies and a similar proximity to residues in the PTP1B and α-glucosidase binding pocket, which means they are closely connected and strongly binding with the active enzyme site. In addition, dihydroxanthyletin-type coumarins are up to 40 µM non-toxic in HepG2 cells and have substantially increased glucose uptake and decreased expression of PTP1B in insulin-resistant HepG2 cells. Further, coumarins inhibited ONOO−-mediated albumin nitration and scavenged peroxynitrite (ONOO−), and reactive oxygen species (ROS). Our overall findings showed that dihydroxanthyletin-type coumarins derived from A. decursiva is used as a dual inhibitor for enzymes, such as PTP1B and α-glucosidase, as well as for insulin susceptibility.
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18
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Thiazole-based and thiazolidine-based protein tyrosine phosphatase 1B inhibitors as potential anti-diabetes agents. Med Chem Res 2020. [DOI: 10.1007/s00044-020-02668-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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19
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Abbas G, Haq QMI, Hamaed A, Al-Sibani M, Hussain H. Glucagon and Glucagon-like Peptide-1 Receptors: Promising Therapeutic Targets for an Effective Management of Diabetes Mellitus. Curr Pharm Des 2020; 26:501-508. [PMID: 32003684 DOI: 10.2174/1381612826666200131143231] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Accepted: 12/30/2019] [Indexed: 02/08/2023]
Abstract
G-protein-coupled receptors (GPCRs) are membrane-bound proteins, which are responsible for the detection of extracellular stimuli and the origination of intracellular responses. Both glucagon and glucagon-like peptide-1 (GLP-1) receptors belong to G protein-coupled receptor (GPCR) superfamily. Along with insulin, glucagon and GLP-1 are critical hormones for maintaining normal serum glucose within the human body. Glucagon generally plays its role in the liver through cyclic adenosine monophosphate (cAMP), where it compensates for the action of insulin. GLP-1 is secreted by the L-cells of the small intestine to stimulate insulin secretion and inhibit glucagon action. Despite extensive research efforts and the multiple approaches adopted, the glycemic control in the case of type-2 diabetes mellitus remains a major challenge. Therefore, a deep understanding of the structure-function relationship of these receptors will have great implications for future therapies in order to maintain a normal glucose level for an extended period of time. The antagonists of glucagon receptors that can effectively block the hepatic glucose production, as a result of glucagon action, are highly desirable for the tuning of the hyperglycemic state in type 2 diabetes mellitus. In the same manner, GLP-1R agonists act as important treatment modalities, thanks to their multiple anti-diabetic actions to attain normal glucose levels. In this review article, the structural diversity of glucagon and GLP-1 receptors along with their signaling pathways, site-directed mutations and significance in drug discovery against type-2 diabetes are illustrated. Moreover, the promising non-peptide antagonists of glucagon receptor and agonists of GLP-1 receptor, for the management of diabetes are presented with elaboration on the structure-activity relationship (SAR).
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Affiliation(s)
- Ghulam Abbas
- Department of Biological Sciences and Chemistry, University of Nizwa, P.O. Box 33, PC 616, Nizwa, Oman
| | - Quazi M I Haq
- Department of Biological Sciences and Chemistry, University of Nizwa, P.O. Box 33, PC 616, Nizwa, Oman
| | - Ahmad Hamaed
- Department of Biological Sciences and Chemistry, University of Nizwa, P.O. Box 33, PC 616, Nizwa, Oman
| | - Mohammed Al-Sibani
- Department of Biological Sciences and Chemistry, University of Nizwa, P.O. Box 33, PC 616, Nizwa, Oman
| | - Hidayat Hussain
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, Weinberg 3, Halle (Salle) D-06120, Germany
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20
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García‐Marín J, Griera M, Sánchez‐Alonso P, Di Geronimo B, Mendicuti F, Rodríguez‐Puyol M, Alajarín R, Pascual‐Teresa B, Vaquero JJ, Rodríguez‐Puyol D. Pyrrolo[1,2‐
a
]quinoxalines: Insulin Mimetics that Exhibit Potent and Selective Inhibition against Protein Tyrosine Phosphatase 1B. ChemMedChem 2020; 15:1788-1801. [DOI: 10.1002/cmdc.202000446] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 07/29/2020] [Indexed: 12/29/2022]
Affiliation(s)
- Javier García‐Marín
- Departamento de Química Orgánica y Química Inorgánica Universidad de Alcalá 28805 Alcalá de Henares Spain
- Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS) Ctra. Colmenar Viejo, km. 9100 28034 Madrid Spain
- Instituto de Investigación Química Andrés M. del Río Facultad de Farmacia Universidad de Alcalá 28805 Alcalá de Henares Spain
| | - Mercedes Griera
- Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS) Ctra. Colmenar Viejo, km. 9100 28034 Madrid Spain
- Departamento de Biología de Sistemas Universidad de Alcalá 28805 Alcalá de Henares Spain
| | - Patricia Sánchez‐Alonso
- Departamento de Química Orgánica y Química Inorgánica Universidad de Alcalá 28805 Alcalá de Henares Spain
| | - Bruno Di Geronimo
- Departamento de Química y Bioquímica Facultad de Farmacia Universidad San Pablo CEU 28925 Alcorcón Spain
| | - Francisco Mendicuti
- Departamento de Química Analítica Química Física e Ingeniería Química Universidad de Alcalá 28805 Alcalá de Henares Spain
- Instituto de Investigación Química Andrés M. del Río Facultad de Farmacia Universidad de Alcalá 28805 Alcalá de Henares Spain
| | - Manuel Rodríguez‐Puyol
- Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS) Ctra. Colmenar Viejo, km. 9100 28034 Madrid Spain
- Departamento de Biología de Sistemas Universidad de Alcalá 28805 Alcalá de Henares Spain
| | - Ramón Alajarín
- Departamento de Química Orgánica y Química Inorgánica Universidad de Alcalá 28805 Alcalá de Henares Spain
- Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS) Ctra. Colmenar Viejo, km. 9100 28034 Madrid Spain
- Instituto de Investigación Química Andrés M. del Río Facultad de Farmacia Universidad de Alcalá 28805 Alcalá de Henares Spain
| | - Beatriz Pascual‐Teresa
- Departamento de Química y Bioquímica Facultad de Farmacia Universidad San Pablo CEU 28925 Alcorcón Spain
| | - Juan J. Vaquero
- Departamento de Química Orgánica y Química Inorgánica Universidad de Alcalá 28805 Alcalá de Henares Spain
- Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS) Ctra. Colmenar Viejo, km. 9100 28034 Madrid Spain
- Instituto de Investigación Química Andrés M. del Río Facultad de Farmacia Universidad de Alcalá 28805 Alcalá de Henares Spain
| | - Diego Rodríguez‐Puyol
- Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS) Ctra. Colmenar Viejo, km. 9100 28034 Madrid Spain
- Departamento de Biología de Sistemas Universidad de Alcalá 28805 Alcalá de Henares Spain
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21
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Kapojos MM, Abdjul DB, Yamazaki H, Yagi A, Uchida R. Screening of Indonesian Edible Plants for Bioactive Constituents and a New Protein Tyrosine Phosphatase 1B Inhibitory Acylbenzene Derivative from Leaves of Indonesian Syzygium polyanthum. Chem Pharm Bull (Tokyo) 2020; 68:903-906. [PMID: 32879232 DOI: 10.1248/cpb.c20-00457] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Bioassay screening using Indonesian plants, such as traditional foods (vegetables, spices, and tea) and folk medicinal herbs, identified eight protein tyrosine phosphatase (PTP) 1B inhibitory and two antibacterial plants. The leaves of Syzygium polyanthum (Wight) Walp. were examined in more detail to define PTP1B inhibitory components, resulting in the isolation of a new active acylbenzene (1) along with four related congeners of 1 (2-5) and four oleanane triterpenes (6-9). The structure of 1 was elucidated as 12-oxo-12-(2,3,5-trihydroxy-4-methylphenyl)dodecanoic acid based on its spectroscopic data. The acylbenzenes 1 and 3-5 inhibited PTP1B activity with IC50 values ranging between 9.5 and 14 µM, whereas the triterpenes 7-9 also suppressed this activity with IC50 values of 3.3-5.7 µM.
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Affiliation(s)
- Magie Melanie Kapojos
- Faculty of Nursing, University of Pembangunan Indonesia.,Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University
| | - Delfly Booby Abdjul
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University.,North Sulawesi Research and Development Agency
| | - Hiroyuki Yamazaki
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University
| | - Akiho Yagi
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University
| | - Ryuji Uchida
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University
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22
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Yousof Ali M, Zaib S, Mizanur Rahman M, Jannat S, Iqbal J, Kyu Park S, Seog Chang M. Poncirin, an orally active flavonoid exerts antidiabetic complications and improves glucose uptake activating PI3K/Akt signaling pathway in insulin resistant C2C12 cells with anti-glycation capacities. Bioorg Chem 2020; 102:104061. [PMID: 32653611 DOI: 10.1016/j.bioorg.2020.104061] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 05/18/2020] [Accepted: 06/28/2020] [Indexed: 12/26/2022]
Abstract
Poncirin, a natural flavanone glycoside present abundantly in many citrus fruits, contains an extensive range of biological activities. However, the antidiabetic mechanism of poncirin is unexplored yet. In this study, we examined the anti-diabetic prospective of poncirin by evaluating its ability to inhibit protein tyrosine phosphatase 1B (PTP1B), α-glucosidase, human recombinant AR (HRAR), rat lens aldose reductase (RLAR), and advanced glycation end-product (AGE) formation (IC50 = 7.76 ± 0.21, 21.31 ± 1.26, 3.56 ± 0.33, 11.91 ± 0.21, and 3.23 ± 0.09 µM, respectively). Kinetics data and docking studies showed the lowest binding energy and highestaffinityforthemixed and competitivetypeof inhibitorsof poncirin. Moreover, the molecular mechanisms underlying the antidiabetic outcomes of poncirin in insulin resistant C2C12 skeletal muscle cells were explored, which significantly increased glucose uptake and decreased the expression of PTP1B in C2C12 cells. Consequently, poncirin increased GLUT-4 expression level by activating the IRS-1/PI3K/Akt/GSK-3 signaling pathway. Moreover, poncirin (0.5-50 µM) remarkably inhibited the formation of fluorescent AGE, nonfluorescent CML, fructosamine, and β-cross amyloid structures in glucose-fructose-induced BSA glycation during 4 weeks of study. Poncirin also notably prevented protein oxidation demonstrated with decreasing the protein carbonyl and the consumption of protein thiol in the dose-dependent manner. The results clearly expressed the promising activity of poncirin for the therapy of diabetes and its related complications.
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Affiliation(s)
- Md Yousof Ali
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB, Canada.
| | - Sumera Zaib
- Centre for Advanced Drug Research, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan; Department of Biochemistry, Faculty of Life Sciences, University of Central Punjab, Lahore 54590, Pakistan
| | - M Mizanur Rahman
- Department of Biotechnology and Genetic Engineering, Islamic University, Kushtia 7003, Bangladesh
| | - Susoma Jannat
- Department of Biochemistry and Molecular Biology, University of Calgary, T2N 1N4 Alberta, Canada
| | - Jamshed Iqbal
- Centre for Advanced Drug Research, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
| | - Seong Kyu Park
- Department of Korean Medicine, Graduate School, Kyung Hee University, 26, Kyunghee dae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Mun Seog Chang
- Department of Korean Medicine, Graduate School, Kyung Hee University, 26, Kyunghee dae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea.
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23
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Prabhakar PK, Sivakumar PM. Protein Tyrosine Phosphatase 1B Inhibitors: A Novel Therapeutic Strategy for the Management of type 2 Diabetes Mellitus. Curr Pharm Des 2020; 25:2526-2539. [PMID: 31333090 DOI: 10.2174/1381612825666190716102901] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 07/04/2019] [Indexed: 12/26/2022]
Abstract
Diabetes is one of the most common endocrine non-communicable metabolic disorders which is mainly caused either due to insufficient insulin or inefficient insulin or both together and is characterized by hyperglycemia. Diabetes emerged as a serious health issue in the industrialized and developing country especially in the Asian pacific region. Out of the two major categories of diabetes mellitus, type 2 diabetes is more prevalent, almost 90 to 95% cases, and the main cause of this is insulin resistance. The main cause of the progression of type 2 diabetes mellitus has been found to be insulin resistance. The type 2 diabetes mellitus may be managed by the change in lifestyle, physical activities, dietary modifications and medications. The major currently available management strategies are sulfonylureas, biguanides, thiazolidinediones, α-glucosidase inhibitors, dipeptidyl peptidase-IV inhibitors, and glucagon-like peptide-1 (GLP-1) agonist. Binding of insulin on the extracellular unit of insulin receptor sparks tyrosine kinase of the insulin receptor which induces autophosphorylation. The phosphorylation of the tyrosine is regulated by insulin and leptin molecules. Protein tyrosine phosphatase-1B (PTP1B) works as a negative governor for the insulin signalling pathways, as it dephosphorylates the tyrosine of the insulin receptor and suppresses the insulin signalling cascade. The compounds or molecules which inhibit the negative regulation of PTP1B can have an inductive effect on the insulin pathway and finally help in the management of diabetes mellitus. PTP1B could be an emerging therapeutic strategy for diabetes management. There are a number of clinical and basic research results which suggest that induced expression of PTP1B reduces insulin resistance. In this review, we briefly elaborate and explain the place of PTP1B and its significance in diabetes as well as a recent development in the PTP1B inhibitors as an antidiabetic therapy.
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Affiliation(s)
- Pranav K Prabhakar
- Research & Development, Lovely Professional University, Phagwara, Punjab-144411, India
| | - Ponnurengam M Sivakumar
- Center for Molecular Biology, Institute of Research and Development, Duy Tan University, 03 Quang Trung, Da Nang, Vietnam
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24
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Yang L, Chen F, Gao C, Chen J, Li J, Liu S, Zhang Y, Wang Z, Qian S. Design and synthesis of tricyclic terpenoid derivatives as novel PTP1B inhibitors with improved pharmacological property and in vivo antihyperglycaemic efficacy. J Enzyme Inhib Med Chem 2020; 35:152-164. [PMID: 31742469 PMCID: PMC6882489 DOI: 10.1080/14756366.2019.1690481] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Overexpression of protein tyrosine phosphatase 1B (PTP1B) induces insulin resistance in various basic and clinical research. In our previous work, a synthetic oleanolic acid (OA) derivative C10a with PTP1B inhibitory activity has been reported. However, C10a has some pharmacological defects and cytotoxicity. Herein, a structure-based drug design approach was used based on the structure of C10a to elaborate the smaller tricyclic core. A series of tricyclic derivatives were synthesised and the compounds 15, 28 and 34 exhibited the most PTP1B enzymatic inhibitory potency. In the insulin-resistant human hepatoma HepG2 cells, compound 25 with the moderate PTP1B inhibition and preferable pharmaceutical properties can significantly increase insulin-stimulated glucose uptake and showed the insulin resistance ameliorating effect. Moreover, 25 showed the improved in vivo antihyperglycaemic potential in the nicotinamide–streptozotocin-induced T2D. Our study demonstrated that these tricyclic derivatives with improved molecular architectures and antihyperglycaemic activity could be developed in the treatment of T2D.
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Affiliation(s)
- Lingling Yang
- Department of Pharmaceutical Engineering, College of Food and Bioengineering, Xihua University, Chengdu, China
| | - Feng Chen
- Department of Pharmaceutical Engineering, College of Food and Bioengineering, Xihua University, Chengdu, China
| | - Cheng Gao
- Department of Pharmaceutical Engineering, College of Food and Bioengineering, Xihua University, Chengdu, China
| | - Jiabao Chen
- Department of Pharmaceutical Engineering, College of Food and Bioengineering, Xihua University, Chengdu, China
| | - Junyan Li
- Department of Pharmaceutical Engineering, College of Food and Bioengineering, Xihua University, Chengdu, China
| | - Siyan Liu
- Department of Pharmaceutical Engineering, College of Food and Bioengineering, Xihua University, Chengdu, China
| | - Yuanyuan Zhang
- Department of Chemistry, College of Science, Xihua University, Chengdu, China
| | - Zhouyu Wang
- Department of Chemistry, College of Science, Xihua University, Chengdu, China
| | - Shan Qian
- Department of Pharmaceutical Engineering, College of Food and Bioengineering, Xihua University, Chengdu, China
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25
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Zhou J, Wu Z, Guo B, Sun M, Onakpa MM, Yao G, Zhao M, Che CT. Modified diterpenoids from the tuber of Icacina oliviformis as protein tyrosine phosphatase 1B inhibitors. Org Chem Front 2020. [DOI: 10.1039/c9qo01320b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two modified diterpenoids featuring a novel 4,12-dioxatetracyclo[8.6.0.02,7.010,14]hexadecane core, together with a 3,4-seco-pimarane, a 3,4-seco-cleistanthane, and eight pimarane derivatives were isolated from the tuber of Icacina oliviformis.
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Affiliation(s)
- Junfei Zhou
- Department of Pharmaceutical Sciences
- College of Pharmacy
- University of Illinois at Chicago
- Chicago
- USA
| | - Zhenlong Wu
- Department of Pharmaceutical Sciences
- College of Pharmacy
- University of Illinois at Chicago
- Chicago
- USA
| | - Brian Guo
- Department of Pharmaceutical Sciences
- College of Pharmacy
- University of Illinois at Chicago
- Chicago
- USA
| | - Meng Sun
- Department of Pharmaceutical Sciences
- College of Pharmacy
- University of Illinois at Chicago
- Chicago
- USA
| | - Monday M. Onakpa
- Department of Veterinary Pharmacology and Toxicology
- Faculty of Veterinary Medicine
- University of Abuja
- Abuja 920001
- Nigeria
| | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation
- School of Pharmacy
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan 430030
| | - Ming Zhao
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization
- College of Pharmacy
- Nanjing University of Chinese Medicine
- Nanjing 210023
- People's Republic of China
| | - Chun-Tao Che
- Department of Pharmaceutical Sciences
- College of Pharmacy
- University of Illinois at Chicago
- Chicago
- USA
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26
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Zhou J, Zuo Z, Liu J, Zhang H, Zheng G, Yao G. Discovery of highly functionalized 5,6-seco-grayanane diterpenoids as potent competitive PTP1B inhibitors. Org Chem Front 2020. [DOI: 10.1039/c9qo01538h] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three competitive PTP1B inhibitory diterpenoids with a 5,6-seco-grayanane carbon skeleton (1–3) were isolated and identified fromRhododendron molle. A more potent competitive PTP1B inhibitor (9) was designed and prepared based on a docking study.
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Affiliation(s)
- Junfei Zhou
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation
- School of Pharmacy
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan 430030
| | - Zhili Zuo
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- Kunming Institute of Botany
- Chinese Academy of Science
- Kunming 650204
- China
| | - Junjun Liu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation
- School of Pharmacy
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan 430030
| | - Hanqi Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation
- School of Pharmacy
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan 430030
| | - Guijuan Zheng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation
- School of Pharmacy
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan 430030
| | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation
- School of Pharmacy
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan 430030
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27
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Zhou J, Wu Z, Oyawaluja BO, Coker HAB, Odukoya OA, Yao G, Che CT. Protein Tyrosine Phosphatase 1B Inhibitory Iridoids from Psydrax subcordata. JOURNAL OF NATURAL PRODUCTS 2019; 82:2916-2924. [PMID: 31618031 DOI: 10.1021/acs.jnatprod.9b00770] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Phytochemical investigation of the leaves and bark of Psydrax subcordata has led to the isolation of six new iridoids, subcordatanols I-V (1-4 and 6) and 1-O-methylcrescentin I (5), along with two known analogues (7 and 8). Among them, subcordatanol I (1) is the first example of a 3,8-monoepoxy-iridoid featuring a caged 2-oxa-bicyclo[3.2.1]octane core. The absolute stereochemistry at C-4 of 3, 4, and 6 was established through their acid-catalyzed reaction products subcordatalactones A (3a), B (4a), and C (6a), respectively. Subcordatanols I (1) and II (2), as well as subcordatalactones A (3a) and B (4a), displayed inhibitory activity against protein tyrosine phosphatase 1B (PTP1B). Enzyme kinetic studies indicated that 3a and 4a are competitive inhibitors. A molecular docking study is also reported.
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Affiliation(s)
- Junfei Zhou
- Department of Pharmaceutical Sciences, College of Pharmacy , University of Illinois at Chicago , Chicago , Illinois 60612 , United States
| | - Zhenlong Wu
- Department of Pharmaceutical Sciences, College of Pharmacy , University of Illinois at Chicago , Chicago , Illinois 60612 , United States
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy , Jinan University , Guangzhou 510632 , People's Republic of China
| | - Bamisaye O Oyawaluja
- Department of Pharmaceutical Sciences, College of Pharmacy , University of Illinois at Chicago , Chicago , Illinois 60612 , United States
| | | | | | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College , Huazhong University of Science and Technology , Wuhan 430030 , People's Republic of China
| | - Chun-Tao Che
- Department of Pharmaceutical Sciences, College of Pharmacy , University of Illinois at Chicago , Chicago , Illinois 60612 , United States
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28
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Ateba SB, Mvondo MA, Djiogue S, Zingué S, Krenn L, Njamen D. A Pharmacological Overview of Alpinumisoflavone, a Natural Prenylated Isoflavonoid. Front Pharmacol 2019; 10:952. [PMID: 31551770 PMCID: PMC6746831 DOI: 10.3389/fphar.2019.00952] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 07/26/2019] [Indexed: 12/29/2022] Open
Abstract
Over the last decade, several studies demonstrated that prenylation of flavonoids enhances various biological activities as compared to the respective nonprenylated compounds. In line with this, the natural prenylated isoflavonoid alpinumisoflavone (AIF) has been explored for a number of biological and pharmacological effects (therapeutic potential). In this review, we summarize the current information on health-promoting properties of AIF. Reported data evidenced that AIF has a multitherapeutic potential with antiosteoporotic, antioxidant and anti-inflammatory, antimicrobial, anticancer, estrogenic and antiestrogenic, antidiabetic, and neuroprotective properties. However, research on these aspects of AIF is not sufficient and needs to be reevaluated using more appropriate methods and methodology. Further series of studies are needed to confirm these pharmacological effects, and this review should lay the basis for the design of respective investigations. Overall, despite the drawbacks of studies recorded, AIF exhibits a potential as drug candidate.
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Affiliation(s)
- Sylvin Benjamin Ateba
- Laboratory of Animal Physiology, Department of Animal Biology and Physiology, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
| | - Marie Alfrede Mvondo
- Research Unit of Animal Physiology and Phytopharmacology, Department of Animal Biology, Faculty of Science, University of Dschang, Dschang, Cameroon
| | - Sefirin Djiogue
- Laboratory of Animal Physiology, Department of Animal Biology and Physiology, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
| | - Stéphane Zingué
- Department of Life and Earth Sciences, Higher Teachers’ Training College, University of Maroua, Maroua, Cameroon
| | - Liselotte Krenn
- Department of Pharmacognosy, University of Vienna, Vienna, Austria
| | - Dieudonné Njamen
- Laboratory of Animal Physiology, Department of Animal Biology and Physiology, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
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29
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Hussain H, Green IR, Abbas G, Adekenov SM, Hussain W, Ali I. Protein tyrosine phosphatase 1B (PTP1B) inhibitors as potential anti-diabetes agents: patent review (2015-2018). Expert Opin Ther Pat 2019; 29:689-702. [PMID: 31402706 DOI: 10.1080/13543776.2019.1655542] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Introduction: Protein tyrosine phosphatase 1B (PTP1B) inhibition has been recommended as a crucial strategy to enhance insulin sensitivity in various cells and this fact is supported by human genetic data. PTP1B inhibitors improve the sensitivity of the insulin receptor and have the ability to cure insulin resistance-related diseases. In the latter years, targeting PTP1B inhibitors is being considered an attractive target to treat T2DM and therefore libraries of PTP1B inhibitors are being suggested as potent antidiabetic drugs. Areas covered: This review provides an overview of published patents from January 2015 to December 2018. The review describes the effectiveness of potent PTP1B inhibitors as pharmaceutical agents to treat type 2 diabetes. Expert opinion: Enormous developments have been made in PTP1B drug discovery which describes progress in natural products, synthetic heterocyclic scaffolds or heterocyclic hybrid compounds. Various protocols are being followed to boost the pharmacological effects of PTP1B inhibitors. Moreover these new advancements suggest that it is possible to get small-molecule PTP1B inhibitors with the required potency and selectivity. Furthermore, future endevours via an integrated strategy of using medicinal chemistry and structural biology will hopefully result in potent and selective PTP1B inhibitors as well as safer and more effective orally available drugs.
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Affiliation(s)
- Hidayat Hussain
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry , Weinberg 3, D-06120 Halle (Saale) , Germany
| | - Ivan R Green
- Department of Chemistry and Polymer Science, University of Stellenbosch , Matieland , Stellenbosch , South Africa
| | - Ghulam Abbas
- Department of Biological Sciences and Chemistry, College of Arts and Sciences, University of Nizwa , Nizwa , Sultanate of Oman
| | - Sergazy M Adekenov
- JSC International Research and Production Holding "Phytochemistry" , Karaganda , Republic of Kazakhstan
| | - Wahid Hussain
- Department of Botany, GPGC Parachinar Kurram Agency Pakistan , Parachinar , Pakistan
| | - Iftikhar Ali
- Department of Chemistry, Karakoram International University , Gilgit , Pakistan.,Shandong Key Laboratory of TCM Quality Control Technology, Shandong Analysis and Test Center , Jinan , Shandong Province , P.R. China
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30
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Insight into the PTP1B Inhibitory Activity of Arylbenzofurans: An In Vitro and In Silico Study. Molecules 2019; 24:molecules24162893. [PMID: 31395821 PMCID: PMC6721227 DOI: 10.3390/molecules24162893] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 08/05/2019] [Accepted: 08/08/2019] [Indexed: 12/15/2022] Open
Abstract
Protein tyrosine phosphatase 1B (PTP1B) plays a specific role as a negative regulator of insulin signaling pathways and is a validated therapeutic target for Type 2 diabetes. Previously, arylbenzofurans were reported to have inhibitory activity against PTP1B. However, detailed investigation regarding their structure activity relationship (SAR) has not been elucidated. The main aim of this work was to investigate the PTP1B inhibitory activity of 2-arylbenzofuran analogs (sanggenofuran A (SA), mulberrofuran D2 (MD2), mulberrofuran D (MD), morusalfuran B (MB), mulberrofuran H (MH)) isolated from the root bark of Morus alba. All compounds demonstrated potent inhibitory activity with IC50 values ranging from 3.11 to 53.47 µM. Among the tested compounds, MD2 showed the strongest activity (IC50, 3.11 µM), followed by MD and MB, while SA and MH demonstrated the lowest activity. Lineweaver-Burk and Dixon plots were used for the determination of inhibition type whereas ligand and receptor interactions were investigated in modeled complexes via molecular docking. Our study clearly supports 2-arylbenzofuran analogs as a promising class of PTP1B inhibitors and illustrates the key positions responsible for the inhibitory activity, their correlation, the effect of prenyl/geranyl groups, and the influence of resorcinol scaffold, which can be further explored in-depth to develop therapeutic agents against T2DM.
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31
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Shi T, Wijeratne EMK, Solano C, Ambrose AJ, Ross AB, Norwood C, Orido CK, Grigoryan T, Tillotson J, Kang M, Luo G, Keegan BM, Hu W, Blagg BSJ, Zhang DD, Gunatilaka AAL, Chapman E. An Isoform-Selective PTP1B Inhibitor Derived from Nitrogen-Atom Augmentation of Radicicol. Biochemistry 2019; 58:3225-3231. [PMID: 31298844 PMCID: PMC8610018 DOI: 10.1021/acs.biochem.9b00499] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A library of natural products and their derivatives was screened for inhibition of protein tyrosine phosphatase (PTP) 1B, which is a validated drug target for the treatment of obesity and type II diabetes. Of those active in the preliminary assay, the most promising was compound 2 containing a novel pyrrolopyrazoloisoquinolone scaffold derived by treating radicicol (1) with hydrazine. This nitrogen-atom augmented radicicol derivative was found to be PTP1B selective relative to other highly homologous nonreceptor PTPs. Biochemical evaluation, molecular docking, and mutagenesis revealed 2 to be an allosteric inhibitor of PTP1B with a submicromolar Ki. Cellular analyses using C2C12 myoblasts indicated that 2 restored insulin signaling and increased glucose uptake.
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Affiliation(s)
- Taoda Shi
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Arizona, 1703 East Mabel Street, P.O. Box 210207, Tucson, Arizona 85721, United States
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Chemical Engineering, East China Normal University, Shanghai, China, 200062
| | - E. M. Kithsiri Wijeratne
- Natural Products Center, School of Natural Resources and the Environment, College of Agriculture and Life Sciences, University of Arizona, 250 East Valencia Road, Tucson, Arizona 85706, United States
| | - Cristian Solano
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Arizona, 1703 East Mabel Street, P.O. Box 210207, Tucson, Arizona 85721, United States
| | - Andrew J. Ambrose
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Arizona, 1703 East Mabel Street, P.O. Box 210207, Tucson, Arizona 85721, United States
| | - Alison B. Ross
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Arizona, 1703 East Mabel Street, P.O. Box 210207, Tucson, Arizona 85721, United States
| | - Charles Norwood
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Arizona, 1703 East Mabel Street, P.O. Box 210207, Tucson, Arizona 85721, United States
| | - Charles K. Orido
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Arizona, 1703 East Mabel Street, P.O. Box 210207, Tucson, Arizona 85721, United States
| | - Tigran Grigoryan
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Arizona, 1703 East Mabel Street, P.O. Box 210207, Tucson, Arizona 85721, United States
| | - Joseph Tillotson
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Arizona, 1703 East Mabel Street, P.O. Box 210207, Tucson, Arizona 85721, United States
| | - Minjin Kang
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Arizona, 1703 East Mabel Street, P.O. Box 210207, Tucson, Arizona 85721, United States
| | - Gang Luo
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Arizona, 1703 East Mabel Street, P.O. Box 210207, Tucson, Arizona 85721, United States
| | - Bradley M. Keegan
- Department of Chemistry and Biochemistry, The University of Notre Dame, 251 Nieuwland Science Hall, Notre Dame, Indiana 46556, United States
| | - Wenhao Hu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China, 510006
| | - Brian S. J. Blagg
- Department of Chemistry and Biochemistry, The University of Notre Dame, 251 Nieuwland Science Hall, Notre Dame, Indiana 46556, United States
| | - Donna D. Zhang
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Arizona, 1703 East Mabel Street, P.O. Box 210207, Tucson, Arizona 85721, United States
| | - A. A. Leslie Gunatilaka
- Natural Products Center, School of Natural Resources and the Environment, College of Agriculture and Life Sciences, University of Arizona, 250 East Valencia Road, Tucson, Arizona 85706, United States
| | - Eli Chapman
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Arizona, 1703 East Mabel Street, P.O. Box 210207, Tucson, Arizona 85721, United States
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32
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Mlala S, Oyedeji AO, Gondwe M, Oyedeji OO. Ursolic Acid and Its Derivatives as Bioactive Agents. Molecules 2019; 24:E2751. [PMID: 31362424 PMCID: PMC6695944 DOI: 10.3390/molecules24152751] [Citation(s) in RCA: 133] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 07/24/2019] [Accepted: 07/25/2019] [Indexed: 12/21/2022] Open
Abstract
Non-communicable diseases (NCDs) such as cancer, diabetes, and chronic respiratory and cardiovascular diseases continue to be threatening and deadly to human kind. Resistance to and side effects of known drugs for treatment further increase the threat, while at the same time leaving scientists to search for alternative sources from nature, especially from plants. Pentacyclic triterpenoids (PT) from medicinal plants have been identified as one class of secondary metabolites that could play a critical role in the treatment and management of several NCDs. One of such PT is ursolic acid (UA, 3 β-hydroxy-urs-12-en-28-oic acid), which possesses important biological effects, including anti-inflammatory, anticancer, antidiabetic, antioxidant and antibacterial effects, but its bioavailability and solubility limits its clinical application. Mimusops caffra, Ilex paraguarieni, and Glechoma hederacea, have been reported as major sources of UA. The chemistry of UA has been studied extensively based on the literature, with modifications mostly having been made at positions C-3 (hydroxyl), C12-C13 (double bonds) and C-28 (carboxylic acid), leading to several UA derivatives (esters, amides, oxadiazole quinolone, etc.) with enhanced potency, bioavailability and water solubility. This article comprehensively reviews the information that has become available over the last decade with respect to the sources, chemistry, biological potency and clinical trials of UA and its derivatives as potential therapeutic agents, with a focus on addressing NCDs.
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Affiliation(s)
- Sithenkosi Mlala
- Department of Chemistry, Faculty of Science and Agriculture, University of Fort Hare, Private Bag X1314, Alice 5700, South Africa
| | - Adebola Omowunmi Oyedeji
- Department of Chemical and Physical Sciences, Faculty of Natural Sciences, Walter Sisulu University, Private Bag X1, Mthatha 5117, South Africa
| | - Mavuto Gondwe
- Department of Human Biology, Faculty of Health Sciences, Walter Sisulu University, Private Bag X1, Mthatha 5117, South Africa
| | - Opeoluwa Oyehan Oyedeji
- Department of Chemistry, Faculty of Science and Agriculture, University of Fort Hare, Private Bag X1314, Alice 5700, South Africa.
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Amiri S, Dastghaib S, Ahmadi M, Mehrbod P, Khadem F, Behrouj H, Aghanoori MR, Machaj F, Ghamsari M, Rosik J, Hudecki A, Afkhami A, Hashemi M, Los MJ, Mokarram P, Madrakian T, Ghavami S. Betulin and its derivatives as novel compounds with different pharmacological effects. Biotechnol Adv 2019; 38:107409. [PMID: 31220568 DOI: 10.1016/j.biotechadv.2019.06.008] [Citation(s) in RCA: 128] [Impact Index Per Article: 25.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Revised: 05/30/2019] [Accepted: 06/13/2019] [Indexed: 02/07/2023]
Abstract
Betulin (B) and Betulinic acid (BA) are natural pentacyclic lupane-structure triterpenoids which possess a wide range of pharmacological activities. Recent evidence indicates that B and BA have several properties useful for the treatment of metabolic disorders, infectious diseases, cardiovascular disorders, and neurological disorders. In the current review, we discuss B and BA structures and derivatives and then comprehensively explain their pharmacological effects in relation to various diseases. We also explain antiviral, antibacterial and anti-cancer effects of B and BA. Finally, we discuss the delivery methods, in which these compounds most effectively target different systems.
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Affiliation(s)
- Shayan Amiri
- Department of Human Anatomy and Cell Science, Rady College of Medicine, Max Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Canada
| | - Sanaz Dastghaib
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mazaher Ahmadi
- Department of Analytical Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran
| | - Parvaneh Mehrbod
- Influenza and Respiratory Viruses Department, Pasteur Institute of IRAN, Tehran, Iran
| | - Forough Khadem
- Department of Immunology, Rady College of Medicine, Max Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Canada
| | - Hamid Behrouj
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohamad-Reza Aghanoori
- Division of Neurodegenerative Disorders, St Boniface Hospital Albrechtsen Research Centre, Department of Pharmacology and Therapeutics, University of Manitoba, Winnipeg, MB, Canada
| | - Filip Machaj
- Department of Pathology, Pomeranian Medical University, ul. Unii Lubelskiej 1, 71-344 Szczecin, Poland
| | - Mahdi Ghamsari
- Department of Analytical Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran
| | - Jakub Rosik
- Department of Pathology, Pomeranian Medical University, ul. Unii Lubelskiej 1, 71-344 Szczecin, Poland
| | - Andrzej Hudecki
- Institue of Non-Ferrous Metals, ul. Sowińskiego 5, 44-100 Gliwice, Poland
| | - Abbas Afkhami
- Department of Analytical Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran
| | - Mohammad Hashemi
- Department of Clinical Biochemistry, Zahedan University of Medical Science, Zahedan, Iran
| | - Marek J Los
- Biotechnology Center, Silesian University of Technology, ul Bolesława Krzywoustego 8, Gliwice, Poland; Linkocare Life Sciences AB, Teknikringen 10, Plan 3, 583 30 Linköping, Sweden
| | - Pooneh Mokarram
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Tayyebeh Madrakian
- Department of Analytical Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran
| | - Saeid Ghavami
- Department of Human Anatomy and Cell Science, Rady College of Medicine, Max Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Canada; Biology of Breathing Theme, Children Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, Canada; Health Policy Research Center, Institute of Health, Shiraz University of Medical Sciences, Shiraz, Iran; Research Institute of Oncology and Hematology, CancerCare Manitoba, University of Manitoba, Winnipeg, Canada.
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34
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Yamazaki H. [Search for Protein Tyrosine Phosphatase 1B Inhibitors from Marine Organisms and Induced Production of New Fungal Metabolites by Modulating Culture Methods]. YAKUGAKU ZASSHI 2019; 139:663-672. [PMID: 31061333 DOI: 10.1248/yakushi.18-00221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Marine environments offer a rich source of natural products with potential therapeutic applications because the ocean covers 70% of the earth's surface and approximately 80% of all living organisms live in the sea. Therefore we have investigated bioactive compounds from marine organisms such as marine sponges, ascidians, and marine-derived microorganisms. This review consists of two topics based on marine natural product chemistry. (1) Protein tyrosine phosphatase (PTP) 1B plays a key role as a negative regulator in the insulin and leptin signaling pathways. Accordingly, the development of PTP1B inhibitors is expected to provide new drugs for type 2 diabetes and obesity. We have been searching for new types of PTP1B inhibitors among marine organisms and identified various PTP1B inhibitors from marine sponges and fungi. This review presents their structural diversities and unique biological properties. (2) In the course of our studies on the induced production of new fungal metabolites, the Palauan marine-derived fungus, Trichoderma cf. brevicompactum TPU199, was found to produce the unusual epipolythiodiketopiperazines, gliovirin and pretrichodermamide A. Long-term static fermentation of the strain induced production of a new dipeptide, dithioaspergillazine A, whereas fermentation of the strain with NaCl, NaBr, and NaI produced the Cl and Br derivatives of pretrichodermamide A and a new iodinated derivative, iododithiobrevamide, respectively. Moreover, DMSO-added seawater medium induced the production of diketopiperazine with the unprecedented trithio-bridge, chlorotrithiobrevamide. This fermentation study on the strain as well as the structures of the metabolites obtained are described in this review.
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Affiliation(s)
- Hiroyuki Yamazaki
- Department of Natural Product Chemistry, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University
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Computational study of new 1,2,3-triazole derivative of lithocholic acid: Structural aspects, non-linear optical properties and molecular docking studies as potential PTP 1B enzyme inhibitor. Comput Biol Chem 2019; 78:144-152. [DOI: 10.1016/j.compbiolchem.2018.11.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 10/09/2018] [Accepted: 11/18/2018] [Indexed: 01/14/2023]
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Xu K, Guo S, Jia X, Li X, Shi D. Phytochemical and chemotaxonomic study on Leathesia nana (Chordariaceae). BIOCHEM SYST ECOL 2018. [DOI: 10.1016/j.bse.2018.08.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Yang F, Zhang LW, Feng MT, Liu AH, Li J, Zhao TS, Lai XP, Wang B, Guo YW, Mao SC. Dictyoptesterols A-C, ∆ 22-24-oxo cholestane-type sterols with potent PTP1B inhibitory activity from the brown alga Dictyopteris undulata Holmes. Fitoterapia 2018; 130:241-246. [PMID: 30196076 DOI: 10.1016/j.fitote.2018.09.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Revised: 09/01/2018] [Accepted: 09/03/2018] [Indexed: 01/10/2023]
Abstract
Three new cholestane-type sterols bearing an unusual ∆22-24-oxo side chain, namely, dictyoptesterols A-C (1-3), were isolated from the brown alga Dictyopteris undulata Holmes, together with five known strutural analogues (4-8). Their structures were elucidated on the basis of by extensive spectroscopic analysis. The absolute configurations of the steroidal nuclei of the new compounds were proposed by a comparison of NMR data with those of related known compounds as well as biogenetic considerations. All of the isolates were evaluated in vitro for their potential to inhibit protein tyrosine phosphatase-1B (PTP1B) activity. The results showed that compounds 1-5 exhibited different levels of PTP1B inhibitory activities with IC50 values ranging from 3.03 ± 0.76 to 15.01 ± 2.88 μM. In particular, compounds 3 and 4 showed promising inhibitory effects towards PTP1B with IC50 values of 3.03 ± 0.76 and 3.72 ± 0.40 μM, respectively, when compared to the positive control oleanolic acid (IC50, 2.83 ± 0.39 μM). The chemotaxonomic significance of these isolated ∆22-24-oxo cholestanes has also been discussed.
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Affiliation(s)
- Fei Yang
- School of Pharmacy, Nanchang University, 461 Bayi Road, Nanchang 330006, People's Republic of China
| | - Liang-Wei Zhang
- School of Pharmacy, Nanchang University, 461 Bayi Road, Nanchang 330006, People's Republic of China
| | - Mei-Tang Feng
- School of Pharmacy, Nanchang University, 461 Bayi Road, Nanchang 330006, People's Republic of China
| | - Ai-Hong Liu
- Center of Analysis and Testing, Nanchang University, Nanchang 330047, People's Republic of China
| | - Jia Li
- State key laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, People's Republic of China
| | - Tian-Sheng Zhao
- School of Pharmacy, Nanchang University, 461 Bayi Road, Nanchang 330006, People's Republic of China
| | - Xiao-Ping Lai
- School of Pharmacy, Nanchang University, 461 Bayi Road, Nanchang 330006, People's Republic of China
| | - Bin Wang
- School of Pharmacy, Nanchang University, 461 Bayi Road, Nanchang 330006, People's Republic of China
| | - Yue-Wei Guo
- State key laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, People's Republic of China
| | - Shui-Chun Mao
- School of Pharmacy, Nanchang University, 461 Bayi Road, Nanchang 330006, People's Republic of China.
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Yamazaki H, Takahashi K, Iwakura N, Abe T, Akaishi M, Chiba S, Namikoshi M, Uchida R. A new protein tyrosine phosphatase 1B inhibitory α-pyrone-type polyketide from Okinawan plant-associated Aspergillus sp. TMPU1623. J Antibiot (Tokyo) 2018; 71:745-748. [DOI: 10.1038/s41429-018-0054-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 02/15/2018] [Accepted: 03/27/2018] [Indexed: 01/17/2023]
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Chen X, Gan Q, Feng C, Liu X, Zhang Q. Virtual Screening of Novel and Selective Inhibitors of Protein Tyrosine Phosphatase 1B over T-Cell Protein Tyrosine Phosphatase Using a Bidentate Inhibition Strategy. J Chem Inf Model 2018; 58:837-847. [DOI: 10.1021/acs.jcim.8b00040] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Xi Chen
- State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, No.5, Zhongguancun South Street, Haidian District, Beijing 100081, China
| | - Qiang Gan
- State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, No.5, Zhongguancun South Street, Haidian District, Beijing 100081, China
| | - Changgen Feng
- State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, No.5, Zhongguancun South Street, Haidian District, Beijing 100081, China
| | - Xia Liu
- College of Science, China Agricultural University, Beijing 100193, China
| | - Qian Zhang
- State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, No.5, Zhongguancun South Street, Haidian District, Beijing 100081, China
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Rotinsulu H, Yamazaki H, Sugai S, Iwakura N, Wewengkang DS, Sumilat DA, Namikoshi M. Cladosporamide A, a new protein tyrosine phosphatase 1B inhibitor, produced by an Indonesian marine sponge-derived Cladosporium sp. J Nat Med 2018; 72:779-783. [PMID: 29508256 DOI: 10.1007/s11418-018-1193-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Accepted: 02/17/2018] [Indexed: 12/11/2022]
Abstract
Cladosporamide A (1), a new protein tyrosine phosphatase (PTP) 1B inhibitor, was isolated together with a known prenylated flavanone derivative (2) from the culture broth of an Indonesian marine sponge-derived Cladosporium sp. TPU1507 by solvent extraction, ODS column chromatography, and preparative HPLC (ODS). The structure of 1 was elucidated based on 1D and 2D NMR data. Compound 1 modestly inhibited PTP1B and T-cell PTP (TCPTP) activities with IC50 values of 48 and 54 μM, respectively. The inhibitory activity of 2 against PTP1B (IC50 = 11 μM) was approximately 2-fold stronger than that against TCPTP (IC50 = 27 μM).
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Affiliation(s)
- Henki Rotinsulu
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, 981-8558, Japan
- Faculty of Mathematic and Natural Sciences, Sam Ratulangi University, Kampus Bahu, Manado, 95115, Indonesia
| | - Hiroyuki Yamazaki
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, 981-8558, Japan.
| | - Shino Sugai
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, 981-8558, Japan
| | - Natsuki Iwakura
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, 981-8558, Japan
| | - Defny S Wewengkang
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, 981-8558, Japan
- Faculty of Mathematic and Natural Sciences, Sam Ratulangi University, Kampus Bahu, Manado, 95115, Indonesia
| | - Deiske A Sumilat
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, 981-8558, Japan
- Faculty of Fisheries and Marine Science, Sam Ratulangi University, Kampus Bahu, Manado, 95115, Indonesia
| | - Michio Namikoshi
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, 981-8558, Japan
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Abdjul DB, Yamazaki H, Maarisit W, Rotinsulu H, Wewengkang DS, Sumilat DA, Kapojos MM, Losung F, Ukai K, Namikoshi M. Oleanane triterpenes with protein tyrosine phosphatase 1B inhibitory activity from aerial parts of Lantana camara collected in Indonesia and Japan. PHYTOCHEMISTRY 2017; 144:106-112. [PMID: 28917090 DOI: 10.1016/j.phytochem.2017.08.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Revised: 08/28/2017] [Accepted: 08/29/2017] [Indexed: 05/27/2023]
Abstract
During the search for new protein tyrosine phosphatase (PTP) 1B inhibitors, EtOH extracts from the aerial parts of Lantana camara L. (lantana) collected at Manado (Indonesia) and two subtropical islands in Japan (Ishigaki and Iriomote Islands, Okinawa) exhibited potent inhibitory activities against PTP1B in an enzyme assay. Four previously undescribed oleanane triterpenes were isolated together with known triterpenes and flavones from the Indonesian lantana. The EtOH extracts of lantana collected in Ishigaki and Iriomote Islands exhibited different phytochemical profiles from each other and the Indonesian lantana. Triterpenes with a 24-OH group were isolated from the Indonesian lantana only. Five known triterpene compounds were detected in the Ishigaki lantana, and two oleanane triterpenes with an ether linkage between 3β and 25 were the main components together with five known triterpenes as minor components in the Iriomote lantana. The structures of previously undescribed compounds were assigned on the basis of their spectroscopic data. Among the compounds obtained in this study, oleanolic acid exhibited the most potent activity against PTP1B, and is used as a positive control in studies on PTP1B.
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Affiliation(s)
- Delfly B Abdjul
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai 981-8558, Japan; North Sulawesi Research and Development Agency, 17 Agustus Street, Manado 95117, Indonesia
| | - Hiroyuki Yamazaki
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai 981-8558, Japan.
| | - Wilmar Maarisit
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai 981-8558, Japan; Faculty of Fisheries and Marine Science, Sam Ratulangi University, Kampus Bahu, Manado 95115, Indonesia
| | - Henki Rotinsulu
- Faculty of Mathematic and Natural Sciences, Sam Ratulangi University, Kampus Bahu, Manado 95115, Indonesia
| | - Defny S Wewengkang
- Faculty of Mathematic and Natural Sciences, Sam Ratulangi University, Kampus Bahu, Manado 95115, Indonesia
| | - Deiske A Sumilat
- Faculty of Fisheries and Marine Science, Sam Ratulangi University, Kampus Bahu, Manado 95115, Indonesia
| | - Magie M Kapojos
- Faculty of Nursing, University of Pembangunan Indonesia, Bahu, Manado 95115, Indonesia
| | - Fitje Losung
- Faculty of Fisheries and Marine Science, Sam Ratulangi University, Kampus Bahu, Manado 95115, Indonesia
| | - Kazuyo Ukai
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai 981-8558, Japan
| | - Michio Namikoshi
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai 981-8558, Japan
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Jung HJ, Seong SH, Ali MY, Min BS, Jung HA, Choi JS. α-Methyl artoflavanocoumarin from Juniperus chinensis exerts anti-diabetic effects by inhibiting PTP1B and activating the PI3K/Akt signaling pathway in insulin-resistant HepG2 cells. Arch Pharm Res 2017; 40:1403-1413. [PMID: 29177868 DOI: 10.1007/s12272-017-0992-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Accepted: 11/19/2017] [Indexed: 01/04/2023]
Abstract
Diabetes mellitus is one of the greatest global health issues and much research effort continues to be directed toward identifying novel therapeutic agents. Insulin resistance is a challenging integrally related topic and molecules capable of overcoming it are of considerable therapeutic interest in the context of type 2 diabetes mellitus (T2DM). Protein tyrosine phosphatase 1B (PTP1B) negatively regulates insulin signaling transduction and is regarded a novel therapeutic target in T2DM. Here, we investigated the inhibitory effect of α-methyl artoflavanocoumarin (MAFC), a natural flavanocoumarin isolated from Juniperus chinensis, on PTP1B in insulin-resistant HepG2 cells. MAFC was found to potently inhibit PTP1B with an IC50 of 25.27 ± 0.14 µM, and a kinetics study revealed MAFC is a mixed type PTP1B inhibitor with a K i value of 13.84 µM. Molecular docking simulations demonstrated MAFC can bind to catalytic and allosteric sites of PTP1B. Furthermore, MAFC significantly increased glucose uptake and decreased the expression of PTP1B in insulin-resistant HepG2 cells, down-regulated the phosphorylation of insulin receptor substrate (IRS)-1 (Ser307), and dose-dependently enhanced the protein levels of IRS-1, phosphorylated phosphoinositide 3-kinase (PI3K), Akt, and ERK1. These results suggest that MAFC from J. chinensis has therapeutic potential in T2DM by inhibiting PTP1B and activating insulin signaling pathways.
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Affiliation(s)
- Hee Jin Jung
- Department of Food and Life Science, Pukyong National University, Busan, 48513, Republic of Korea
| | - Su Hui Seong
- Department of Food and Life Science, Pukyong National University, Busan, 48513, Republic of Korea
| | - Md Yousof Ali
- Department of Food and Life Science, Pukyong National University, Busan, 48513, Republic of Korea
| | - Byung-Sun Min
- College of Pharmacy, Catholic University of Daegu, Gyeongsan, 38430, Republic of Korea
| | - Hyun Ah Jung
- Department of Food Science and Human Nutrition, Chonbuk National University, Jeonju, 54896, Republic of Korea.
| | - Jae Sue Choi
- Department of Food and Life Science, Pukyong National University, Busan, 48513, Republic of Korea.
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Proença C, Freitas M, Ribeiro D, Sousa JLC, Carvalho F, Silva AMS, Fernandes PA, Fernandes E. Inhibition of protein tyrosine phosphatase 1B by flavonoids: A structure - activity relationship study. Food Chem Toxicol 2017; 111:474-481. [PMID: 29175190 DOI: 10.1016/j.fct.2017.11.039] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 11/05/2017] [Accepted: 11/19/2017] [Indexed: 12/23/2022]
Abstract
The classical non-transmembrane protein tyrosine phosphatase 1B (PTP1B) has emerged as a key negative regulator of insulin signaling pathways that leads to insulin resistance, turning this enzyme a promising therapeutic target in the management of type 2 diabetes mellitus (T2DM). In the present work, the in vitro inhibitory activity of a panel of structurally related flavonoids, for recombinant human PTP1B was studied and the type of inhibition of the most active compounds further evaluated. The majority of the studied flavonoids was tested in this work for the first time, including flavonoid C13, which was the most potent inhibitor. It was observed that the ability to inhibit PTP1B depends on the nature, position and number of substituents in the flavonoid structure, as the presence of both 7- and 8-OBn groups in the A ring, together with the presence of both 3' and 4'-OMe groups in the B ring and the 3-OH group in the C ring; these substituents increase the flavonoids' ability to inhibit PTP1B. In conclusion, some of the tested flavonoids seem to be promising PTP1B inhibitors and potential effective agents in the management of T2DM, by increasing insulin sensitivity.
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Affiliation(s)
- Carina Proença
- UCIBIO, REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
| | - Marisa Freitas
- UCIBIO, REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
| | - Daniela Ribeiro
- UCIBIO, REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
| | - Joana L C Sousa
- Department of Chemistry & QOPNA, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Félix Carvalho
- UCIBIO, REQUIMTE, Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal.
| | - Artur M S Silva
- Department of Chemistry & QOPNA, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Pedro A Fernandes
- UCIBIO, REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
| | - Eduarda Fernandes
- UCIBIO, REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal.
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Wang J, Mu FR, Jiao WH, Huang J, Hong LL, Yang F, Xu Y, Wang SP, Sun F, Lin HW. Meroterpenoids with Protein Tyrosine Phosphatase 1B Inhibitory Activity from a Hyrtios sp. Marine Sponge. JOURNAL OF NATURAL PRODUCTS 2017; 80:2509-2514. [PMID: 28834433 DOI: 10.1021/acs.jnatprod.7b00435] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Three new meroterpenoids, hyrtiolacton A (1), nakijinol F (2), and nakijinol G (3), along with three known ones, nakijinol B (4), nakijinol E (5), and dactyloquinone A (6), were isolated and characterized from a Hyrtios sp. marine sponge collected from the South China Sea. The new structures were determined based on extensive analysis of HRESIMS and NMR data, and their absolute configurations were assigned by a combination of single-crystal X-ray diffraction and electronic circular dichroism analyses. Hyrtiolacton A (1) represents an unprecedented meroterpenoid featuring an unusual 2-pyrone attached to the sesquiterpene core, which is the first example of a pyrone-containing 4,9-friedodrimane-type sesquiterpene. These compounds were evaluated for their protein tyrosine phosphatase (PTP1B) inhibitory and cytotoxic activities. Nakijinol G (3) showed PTP1B inhibitory activity with an IC50 value of 4.8 μM but no cytotoxicity against four human cancer cell lines.
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Affiliation(s)
- Jie Wang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University , Shenyang 110016, People's Republic of China
| | - Feng-Rong Mu
- Research Center for Marine Drugs, State Key Laboratory of Oncogenes and Related Genes, Department of Pharmacy, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University , Shanghai 200127, People's Republic of China
- Changzheng Hospital, Second Military Medical University , Shanghai 200003, People's Republic of China
| | - Wei-Hua Jiao
- Research Center for Marine Drugs, State Key Laboratory of Oncogenes and Related Genes, Department of Pharmacy, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University , Shanghai 200127, People's Republic of China
| | - Jian Huang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University , Shenyang 110016, People's Republic of China
| | - Li-Li Hong
- Research Center for Marine Drugs, State Key Laboratory of Oncogenes and Related Genes, Department of Pharmacy, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University , Shanghai 200127, People's Republic of China
| | - Fan Yang
- Research Center for Marine Drugs, State Key Laboratory of Oncogenes and Related Genes, Department of Pharmacy, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University , Shanghai 200127, People's Republic of China
| | - Ying Xu
- Research Center for Marine Drugs, State Key Laboratory of Oncogenes and Related Genes, Department of Pharmacy, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University , Shanghai 200127, People's Republic of China
| | - Shu-Ping Wang
- Research Center for Marine Drugs, State Key Laboratory of Oncogenes and Related Genes, Department of Pharmacy, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University , Shanghai 200127, People's Republic of China
| | - Fan Sun
- Research Center for Marine Drugs, State Key Laboratory of Oncogenes and Related Genes, Department of Pharmacy, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University , Shanghai 200127, People's Republic of China
| | - Hou-Wen Lin
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University , Shenyang 110016, People's Republic of China
- Research Center for Marine Drugs, State Key Laboratory of Oncogenes and Related Genes, Department of Pharmacy, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University , Shanghai 200127, People's Republic of China
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Xu Q, Luo J, Wu N, Zhang R, Shi D. BPN, a marine-derived PTP1B inhibitor, activates insulin signaling and improves insulin resistance in C2C12 myotubes. Int J Biol Macromol 2017; 106:379-386. [PMID: 28811203 DOI: 10.1016/j.ijbiomac.2017.08.042] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Revised: 08/03/2017] [Accepted: 08/04/2017] [Indexed: 01/06/2023]
Abstract
Insulin resistance is a key feature of type 2 diabetes mellitus (T2DM) and is characterized by defects in insulin signaling. Protein tyrosine phosphatase 1B (PTP1B) is a major negative regulator of insulin signaling cascade and has attracted intensive investigation in recent T2DM therapy study. BPN, a marine-derived bromophenol compound, was isolated from the red alga Rhodomela confervoides. This study investigated the effects of BPN on the insulin signaling pathway in insulin-resistant C2C12 myotubes by inhibiting PTP1B. Molecular docking study and analysis of small- molecule interaction with PTP1B all showed BPN inhibited PTP1B activity via binding to the catalytic site through hydrogen bonds. We then found that BPN permeated into C2C12 myotubes, on the one hand, activated insulin signaling in an insulin-independent manner in C2C12 cells; on the other hand, ameliorated palmitate-induced insulin resistance through augmenting insulin sensitivity. Moreover, our studies also showed that PTP1B inhibition by BPN increased glucose uptake in normal and insulin-resistant C2C12 myotubes through glucose transporter 4 (GLUT4) translocation. Taken together, BPN activates insulin signaling and alleviates insulin resistance and represents a potential candidate for further development as an antidiabetic agent.
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Affiliation(s)
- Qi Xu
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; The University of Chinese Academy of Sciences, Beijing, China; Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Jiao Luo
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; The University of Chinese Academy of Sciences, Beijing, China; Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Ning Wu
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Renshuai Zhang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Dayong Shi
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; The University of Chinese Academy of Sciences, Beijing, China; Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.
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Michael P, Hansen KØ, Isaksson J, Andersen JH, Hansen E. A Novel Brominated Alkaloid Securidine A, Isolated from the Marine Bryozoan Securiflustra securifrons. Molecules 2017; 22:molecules22071236. [PMID: 28737700 PMCID: PMC6152195 DOI: 10.3390/molecules22071236] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 07/12/2017] [Accepted: 07/17/2017] [Indexed: 02/02/2023] Open
Abstract
A novel brominated alkaloid, Securidine A, was isolated from the cold water marine bryozoan Securiflustra securifrons. Securidine A was isolated using semi-preparative HPLC, and the structure was elucidated by spectroscopic methods. The isolated Securidine A was tested for cytotoxic, antibacterial, and anti-diabetic activities as well as for its potential for inhibition of biofilm formation. No significant biological activity was observed in the applied bioassays, thus expanded bioactivity profiling is required, in order to reveal any potential applications for Securidine A.
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Affiliation(s)
- Priyanka Michael
- MARBIO, UiT-The Arctic University of Norway, Breivika, Tromsø N-9037, Norway.
| | - Kine Ø Hansen
- MARBIO, UiT-The Arctic University of Norway, Breivika, Tromsø N-9037, Norway.
| | - Johan Isaksson
- Department of Chemistry, UiT-The Arctic University of Norway, Breivika, Tromsø N-9037, Norway.
| | - Jeanette H Andersen
- MARBIO, UiT-The Arctic University of Norway, Breivika, Tromsø N-9037, Norway.
| | - Espen Hansen
- MARBIO, UiT-The Arctic University of Norway, Breivika, Tromsø N-9037, Norway.
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47
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PTP1B inhibitory and cytotoxic activities of triterpenoids from the aerial parts of Agrimonia pilosa. Med Chem Res 2017. [DOI: 10.1007/s00044-017-1986-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Rotinsulu H, Yamazaki H, Miura T, Chiba S, Wewengkang DS, Sumilat DA, Namikoshi M. A 2,4'-linked tetrahydroxanthone dimer with protein tyrosine phosphatase 1B inhibitory activity from the Okinawan freshwater Aspergillus sp. J Antibiot (Tokyo) 2017; 70:967-969. [PMID: 28655930 DOI: 10.1038/ja.2017.72] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Revised: 05/09/2017] [Accepted: 05/24/2017] [Indexed: 12/13/2022]
Affiliation(s)
- Henki Rotinsulu
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, Japan.,Faculty of Mathematic and Natural Sciences, Sam Ratulangi University, Manado, Indonesia
| | - Hiroyuki Yamazaki
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Tomohito Miura
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Satomi Chiba
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Defny S Wewengkang
- Faculty of Mathematic and Natural Sciences, Sam Ratulangi University, Manado, Indonesia
| | - Deiske A Sumilat
- Faculty of Fisheries and Marine Science, Sam Ratulangi University, Manado, Indonesia
| | - Michio Namikoshi
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai, Japan
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Sun W, Zhuang C, Li X, Zhang B, Lu X, Zheng Z, Dong Y. Varic acid analogues from fungus as PTP1B inhibitors: Biological evaluation and structure-activity relationships. Bioorg Med Chem Lett 2017. [PMID: 28642102 DOI: 10.1016/j.bmcl.2017.06.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Protein tyrosine phosphatase 1B (PTP1B) inhibitors as potential therapies for diabetes and obesity have attracted much attention in recent years. Six varic acid analogues were isolated from two strains of fungi and evaluated for PTP1B inhibition activities. The structure-activity relationships were also characterized and predicted by molecular modeling. Further kinetic studies indicated the reversible and competitive inhibition manner of varic acid analogues. Trivaric acid showed insulin-sensitizing effect not only in vitro but also in vivo, representing a promising lead compound for further optimization.
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Affiliation(s)
- Wenlong Sun
- School of Life Science, Biotechnology, Dalian University of Technology, Dalian, Liaoning 116024, China
| | - Chunlin Zhuang
- School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, China.
| | - Xia Li
- School of Life Science, Biotechnology, Dalian University of Technology, Dalian, Liaoning 116024, China
| | - Bowei Zhang
- School of Life Science, Biotechnology, Dalian University of Technology, Dalian, Liaoning 116024, China
| | - Xinhua Lu
- New Drug Research and Development Center, North China Pharmaceutical Group Corporation and National Microbial Medicine Engineering and Research Center, Shijiazhuang, Hebei 050015, China.
| | - Zhihui Zheng
- New Drug Research and Development Center, North China Pharmaceutical Group Corporation and National Microbial Medicine Engineering and Research Center, Shijiazhuang, Hebei 050015, China
| | - Yuesheng Dong
- School of Life Science, Biotechnology, Dalian University of Technology, Dalian, Liaoning 116024, China.
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50
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Potential of Icariin Metabolites from Epimedium koreanum Nakai as Antidiabetic Therapeutic Agents. Molecules 2017; 22:molecules22060986. [PMID: 28608833 PMCID: PMC6152727 DOI: 10.3390/molecules22060986] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 06/12/2017] [Accepted: 06/12/2017] [Indexed: 01/31/2023] Open
Abstract
The therapeutic properties of Epimedium koreanum are presumed to be due to the flavonoid component icariin, which has been reported to have broad pharmacological potential and has demonstrated anti-diabetic, anti-Alzheimer’s disease, anti-tumor, and hepatoprotective activities. Considering these therapeutic properties of icariin, its deglycosylated icaritin and glycosylated flavonoids (icaeriside II, epimedin A, epimedin B, and epimedin C) were evaluated for their ability to inhibit protein tyrosine phosphatase 1B (PTP1B) and α-glucosidase. The results show that icaritin and icariside II exhibit potent inhibitory activities, with 50% inhibition concentration (IC50) values of 11.59 ± 1.39 μM and 9.94 ± 0.15 μM against PTP1B and 74.42 ± 0.01 and 106.59 ± 0.44 μM against α-glucosidase, respectively. With the exceptions of icaritin and icariside II, glycosylated flavonoids did not exhibit any inhibitory effects in the two assays. Enzyme kinetics analyses revealed that icaritin and icariside II demonstrated noncompetitive-type inhibition against PTP1B, with inhibition constant (Ki) values of 11.41 and 11.66 μM, respectively. Moreover, molecular docking analysis confirmed that icaritin and icariside II both occupy the same site as allosteric ligand. Thus, the molecular docking simulation results were in close agreement with the experimental data with respect to inhibition activity. In conclusion, deglycosylated metabolites of icariin from E. koreanum might offer therapeutic potential for the treatment of type 2 diabetes mellitus.
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