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Fueller J, Egorov MV, Walther KA, Sabet O, Mallah J, Grabenbauer M, Kinkhabwala A. Subcellular Partitioning of Protein Tyrosine Phosphatase 1B to the Endoplasmic Reticulum and Mitochondria Depends Sensitively on the Composition of Its Tail Anchor. PLoS One 2015; 10:e0139429. [PMID: 26431424 PMCID: PMC4592070 DOI: 10.1371/journal.pone.0139429] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Accepted: 09/14/2015] [Indexed: 01/15/2023] Open
Abstract
The canonical protein tyrosine phosphatase PTP1B is an important regulator of diverse cellular signaling networks. PTP1B has long been thought to exert its influence solely from its perch on the endoplasmic reticulum (ER); however, an additional subpopulation of PTP1B has recently been detected in mitochondria extracted from rat brain tissue. Here, we show that PTP1B’s mitochondrial localization is general (observed across diverse mammalian cell lines) and sensitively dependent on the transmembrane domain length, C-terminal charge and hydropathy of its short (≤35 amino acid) tail anchor. Our electron microscopy of specific DAB precipitation revealed that PTP1B localizes via its tail anchor to the outer mitochondrial membrane (OMM), with fluorescence lifetime imaging microscopy establishing that this OMM pool contributes to the previously reported cytoplasmic interaction of PTP1B with endocytosed epidermal growth factor receptor. We additionally examined the mechanism of PTP1B’s insertion into the ER membrane through heterologous expression of PTP1B’s tail anchor in wild-type yeast and yeast mutants of major conserved ER insertion pathways: In none of these yeast strains was ER targeting significantly impeded, providing in vivo support for the hypothesis of spontaneous membrane insertion (as previously demonstrated in vitro). Further functional elucidation of the newly recognized mitochondrial pool of PTP1B will likely be important for understanding its complex roles in cellular responses to external stimuli, cell proliferation and diseased states.
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Affiliation(s)
- Julia Fueller
- Department of Systemic Cell Biology, Max Planck Institute of Molecular Physiology, Otto-Hahn-Strasse 11, 44227, Dortmund, Germany
- Center for Molecular Biology (ZMBH), DKFZ-ZMBH Alliance, Heidelberg University, Im Neuenheimer Feld 282, 69120, Heidelberg, Germany
| | - Mikhail V. Egorov
- Department of Systemic Cell Biology, Max Planck Institute of Molecular Physiology, Otto-Hahn-Strasse 11, 44227, Dortmund, Germany
- Institute of Anatomy and Cell Biology, Heidelberg University, Im Neuenheimer Feld 307, 69120, Heidelberg, Germany
| | - Kirstin A. Walther
- Department of Systemic Cell Biology, Max Planck Institute of Molecular Physiology, Otto-Hahn-Strasse 11, 44227, Dortmund, Germany
| | - Ola Sabet
- Department of Systemic Cell Biology, Max Planck Institute of Molecular Physiology, Otto-Hahn-Strasse 11, 44227, Dortmund, Germany
| | - Jana Mallah
- Department of Systemic Cell Biology, Max Planck Institute of Molecular Physiology, Otto-Hahn-Strasse 11, 44227, Dortmund, Germany
| | - Markus Grabenbauer
- Department of Systemic Cell Biology, Max Planck Institute of Molecular Physiology, Otto-Hahn-Strasse 11, 44227, Dortmund, Germany
- Institute of Anatomy and Cell Biology, Heidelberg University, Im Neuenheimer Feld 307, 69120, Heidelberg, Germany
| | - Ali Kinkhabwala
- Department of Systemic Cell Biology, Max Planck Institute of Molecular Physiology, Otto-Hahn-Strasse 11, 44227, Dortmund, Germany
- * E-mail:
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152
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Haftchenary S, Jouk AO, Aubry I, Lewis AM, Landry M, Ball DP, Shouksmith AE, Collins CV, Tremblay ML, Gunning PT. Identification of Bidentate Salicylic Acid Inhibitors of PTP1B. ACS Med Chem Lett 2015; 6:982-6. [PMID: 26396684 DOI: 10.1021/acsmedchemlett.5b00171] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Accepted: 07/22/2015] [Indexed: 12/13/2022] Open
Abstract
PTP1B is a master regulator in the insulin and leptin metabolic pathways. Hyper-activated PTP1B results in insulin resistance and is viewed as a key factor in the onset of type II diabetes and obesity. Moreover, inhibition of PTP1B expression in cancer cells dramatically inhibits cell growth in vitro and in vivo. Herein, we report the computationally guided optimization of a salicylic acid-based PTP1B inhibitor 6, identifying new and more potent bidentate PTP1B inhibitors, such as 20h, which exhibited a > 4-fold improvement in activity. In CHO-IR cells, 20f, 20h, and 20j suppressed PTP1B activity and restored insulin receptor phosphorylation levels. Notably, 20f, which displayed a 5-fold selectivity for PTP1B over the closely related PTPσ protein, showed no inhibition of PTP-LAR, PRL2 A/S, MKPX, or papain. Finally, 20i and 20j displayed nanomolar inhibition of PTPσ, representing interesting lead compounds for further investigation.
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Affiliation(s)
- Sina Haftchenary
- Department
of Chemical and Physical Sciences, University of Toronto Mississauga, Mississauga, ON L5L 1C6, Canada
| | - Andriana O. Jouk
- Department
of Chemical and Physical Sciences, University of Toronto Mississauga, Mississauga, ON L5L 1C6, Canada
| | - Isabelle Aubry
- McGill
Goodman Cancer Research Centre and Department of Biochemistry, McGill University, Montreal, QC H3G 1Y6, Canada
| | - Andrew M. Lewis
- Department
of Chemical and Physical Sciences, University of Toronto Mississauga, Mississauga, ON L5L 1C6, Canada
| | - Melissa Landry
- McGill
Goodman Cancer Research Centre and Department of Biochemistry, McGill University, Montreal, QC H3G 1Y6, Canada
| | - Daniel P. Ball
- Department
of Chemical and Physical Sciences, University of Toronto Mississauga, Mississauga, ON L5L 1C6, Canada
| | - Andrew E. Shouksmith
- Department
of Chemical and Physical Sciences, University of Toronto Mississauga, Mississauga, ON L5L 1C6, Canada
| | - Catherine V. Collins
- Department
of Chemical and Physical Sciences, University of Toronto Mississauga, Mississauga, ON L5L 1C6, Canada
| | - Michel L. Tremblay
- McGill
Goodman Cancer Research Centre and Department of Biochemistry, McGill University, Montreal, QC H3G 1Y6, Canada
| | - Patrick T. Gunning
- Department
of Chemical and Physical Sciences, University of Toronto Mississauga, Mississauga, ON L5L 1C6, Canada
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153
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Lewis SM, Li Y, Catalano MJ, Laciak AR, Singh H, Seiner DR, Reilly TJ, Tanner JJ, Gates KS. Inactivation of protein tyrosine phosphatases by dietary isothiocyanates. Bioorg Med Chem Lett 2015; 25:4549-52. [PMID: 26338358 DOI: 10.1016/j.bmcl.2015.08.065] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 08/19/2015] [Accepted: 08/24/2015] [Indexed: 01/07/2023]
Abstract
Isothiocyanates are bioactive dietary phytochemicals that react readily with protein thiol groups. We find that isothiocyanates are time-dependent inactivators of cysteine-dependent protein tyrosine phosphatases (PTPs). Rate constants for the inactivation of PTP1B and SHP-2 by allyl isothiocyanate and sulforaphane range from 2 to 16 M(-1)s(-1). Results in the context of PTP1B are consistent with a mechanism involving covalent, yet reversible, modification of the enzyme's active site cysteine residue.
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Affiliation(s)
- Sarah M Lewis
- University of Missouri, Department of Chemistry, 125 Chemistry Building, Columbia, MO 65211, United States
| | - Ya Li
- University of Missouri, Department of Chemistry, 125 Chemistry Building, Columbia, MO 65211, United States; State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China
| | - Michael J Catalano
- University of Missouri, Department of Chemistry, 125 Chemistry Building, Columbia, MO 65211, United States
| | - Adrian R Laciak
- University of Missouri, Department of Chemistry, 125 Chemistry Building, Columbia, MO 65211, United States
| | - Harkewal Singh
- University of Missouri, Department of Chemistry, 125 Chemistry Building, Columbia, MO 65211, United States
| | - Derrick R Seiner
- University of Missouri, Department of Chemistry, 125 Chemistry Building, Columbia, MO 65211, United States
| | - Thomas J Reilly
- Department of Veterinary Pathobiology and Veterinary Diagnostic Laboratory, University of Missouri, Columbia, MO 65211, United States
| | - John J Tanner
- University of Missouri, Department of Chemistry, 125 Chemistry Building, Columbia, MO 65211, United States; University of Missouri, Department of Biochemistry, 125 Chemistry Building, Columbia, MO 65211, United States
| | - Kent S Gates
- University of Missouri, Department of Chemistry, 125 Chemistry Building, Columbia, MO 65211, United States; University of Missouri, Department of Biochemistry, 125 Chemistry Building, Columbia, MO 65211, United States.
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154
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He WF, Xue DQ, Yao LG, Li J, Liu HL, Guo YW. A new bioactive steroidal ketone from the South China Sea sponge Xestospongia testudinaria. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2015; 18:195-199. [PMID: 26289715 DOI: 10.1080/10286020.2015.1056521] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2015] [Accepted: 05/26/2015] [Indexed: 06/04/2023]
Abstract
A new steroidal ketone (1), with an ergosta-22,25-diene side chain, was obtained from the South China Sea marine sponge Xestospongia testudinaria. The structure of 1 was determined on the basis of detailed spectroscopic analysis and by comparison with literature. Compound 1 exhibited significant inhibitory activity against protein tyrosine phosphatase 1B (PTP1B), a key target for the treatment of type II diabetes and obesity, with an IC50 value of 4.27 ± 0.55 μM, which is comparable with the positive control oleanolic acid (IC50 = 2.63 ± 0.22 μM).
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Affiliation(s)
- Wen-Fei He
- a School of Pharmaceutical Sciences, Wenzhou Medical University , Wenzhou 325035 , China
- b State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203 , China
| | - Duo-Qing Xue
- b State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203 , China
| | - Li-Gong Yao
- b State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203 , China
| | - Jia Li
- b State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203 , China
| | - Hai-Li Liu
- b State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203 , China
| | - Yue-Wei Guo
- b State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203 , China
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155
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Choi JS, Ali MY, Jung HA, Oh SH, Choi RJ, Kim EJ. Protein tyrosine phosphatase 1B inhibitory activity of alkaloids from Rhizoma Coptidis and their molecular docking studies. JOURNAL OF ETHNOPHARMACOLOGY 2015; 171:28-36. [PMID: 26027757 DOI: 10.1016/j.jep.2015.05.020] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Revised: 04/10/2015] [Accepted: 05/08/2015] [Indexed: 06/04/2023]
Abstract
ETHNOPHARMACOLOGIC RELEVANCE Rhizoma Coptidis (the rhizome of Coptis chinensis Franch) has commonly been used for treatment of diabetes mellitus in traditional Chinese medicine due to its blood sugar-lowering properties and therapeutic benefits which highly related to the alkaloids therein. However, a limited number of studies focused on the Coptis alkaloids other than berberine. MATERIALS AND METHODS In the present study, we investigated the anti-diabetic potential of Coptis alkaloids, including berberine (1), epiberberine (2), magnoflorine (3), and coptisine (4), by evaluating the ability of these compounds to inhibit protein tyrosine phosphatase 1B (PTP1B), and ONOO(-)-mediated protein tyrosine nitration. We scrutinized the potentials of Coptis alkaloids as PTP1B inhibitors via enzyme kinetics and molecular docking simulation. RESULTS The Coptis alkaloids 1-4 exhibited remarkable inhibitory activities against PTP1B with the IC50 values of 16.43, 24.19, 28.14, and 51.04 μM, respectively, when compared to the positive control ursolic acid. These alkaloids also suppressed ONOO(-)-mediated tyrosine nitration effectively in a dose dependent manner. In addition, our kinetic study using the Lineweaver-Burk and Dixon plots revealed that 1 and 2 showed a mixed-type inhibition against PTP1B, while 3 and 4 noncompetitively inhibited PTP1B. Moreover, molecular docking simulation of these compounds demonstrated negative binding energies (Autodock 4.0=-6.7 to -7.8 kcal/mol; Fred 2.0=-59.4 to -68.2 kcal/mol) and a high proximity to PTP1B residues, including Phe182 and Asp181 in the WPD loop, Cys215 in the active sites and Tyr46, Arg47, Asp48, Val49, Ser216, Ala217, Gly218, Ile219, Gly220, Arg221 and Gln262 in the pocket site, indicating a higher affinity and tighter binding capacity of these alkaloids for the active site of the enzyme. CONCLUSION Our results clearly indicate the promising anti-diabetic potential of Coptis alkaloids as inhibitors on PTP1B as well as suppressors of ONOO(-)-mediated protein tyrosine nitration, and thus hold promise as therapeutic agents for the treatment of diabetes and related disease.
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Affiliation(s)
- Jae Sue Choi
- Department of Food and Life Science, Pukyong National University, Busan 608-737, Republic of Korea.
| | - Md Yousof Ali
- Department of Food and Life Science, Pukyong National University, Busan 608-737, Republic of Korea
| | - Hyun Ah Jung
- Department of Food Science and Human Nutrition, Chonbuk National University, Jeonju 561-756, Republic of Korea.
| | - Sang Ho Oh
- Korean BioInformation Center (KOBIC), Daejeon 305-806, Republic of Korea
| | - Ran Joo Choi
- Angiogenesis & Chinese Medicine Laboratory, Department of Pharmacology, University of Cambridge, Cambridge, UK
| | - Eon Ji Kim
- Department of Food and Life Science, Pukyong National University, Busan 608-737, Republic of Korea
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156
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Du Y, Ling H, zhang M, Shen J, Li Q. Discovery of novel, potent, selective and cellular active ADC type PTP1B inhibitors via fragment-docking-oriented de novel design. Bioorg Med Chem 2015; 23:4891-4898. [DOI: 10.1016/j.bmc.2015.05.032] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Revised: 05/14/2015] [Accepted: 05/15/2015] [Indexed: 12/17/2022]
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157
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Ma HT, Hsieh JF, Chen ST. Anti-diabetic effects of Ganoderma lucidum. PHYTOCHEMISTRY 2015; 114:109-113. [PMID: 25790910 DOI: 10.1016/j.phytochem.2015.02.017] [Citation(s) in RCA: 94] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 02/12/2015] [Accepted: 02/23/2015] [Indexed: 06/04/2023]
Abstract
Ganoderma lucidum is a white rot fungus widely used as a tonic for the promotion of longevity and health. Extracts of G. lucidum have been recognized as an alternative adjuvant treatment for diabetes. Among the many biologically active constituents of G. lucidum, polysaccharides, proteoglycans, proteins and triterpenoids have been shown to have hypoglycemic effects. G. lucidum polysaccharides have been reported to have hypoglycemic activity by increasing plasma insulin levels and decreasing plasma sugar levels in mice. Protein tyrosine phosphatase 1B is a promising therapeutic target in diabetes, and G. lucidum proteoglycan can inhibit this enzyme in vitro. Moreover, G. lucidum triterpenoids were shown to have inhibitory activity on aldose reductase and α-glucosidase that can suppress postprandial hyperglycemia. In addition, a protein Ling Zhi-8 extracted from G. lucidum significantly decreased lymphocyte infiltration and increased the antibody detection of insulin in diabetic mice. This review summarizes most of the research about the hypoglycemic action effects of polysaccharides, proteoglycans, proteins and tritrerpenoids from G. lucidum as a guide for future research.
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Affiliation(s)
- Haou-Tzong Ma
- Institute of Biological Chemistry and Genomics Research Center, Academia Sinica, Taipei 115, Taiwan
| | - Jung-Feng Hsieh
- Department of Food Science, Fu Jen Catholic University, Taipei 242, Taiwan
| | - Shui-Tein Chen
- Institute of Biological Chemistry and Genomics Research Center, Academia Sinica, Taipei 115, Taiwan; Institute of Biochemical Science, National Taiwan University, Taipei 10617, Taiwan.
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158
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Kokil GR, Veedu RN, Ramm GA, Prins JB, Parekh HS. Type 2 diabetes mellitus: limitations of conventional therapies and intervention with nucleic acid-based therapeutics. Chem Rev 2015; 115:4719-43. [PMID: 25918949 DOI: 10.1021/cr5002832] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Ganesh R Kokil
- †School of Pharmacy, Pharmacy Australia Centre of Excellence, The University of Queensland, Brisbane, QLD 4102, Australia
| | - Rakesh N Veedu
- §Center for Comparative Genomics, Murdoch University, 90 South Street, Murdoch, WA 6150, Australia.,∥Western Australian Neuroscience Research Institute, Perth, WA 6150, Australia.,‡School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane QLD 4072 Australia
| | - Grant A Ramm
- ⊥The Hepatic Fibrosis Group, QIMR Berghofer Medical Research Institute, Brisbane, QLD 4006, Australia.,#Faculty of Medicine and Biomedical Sciences, The University of Queensland, Brisbane, QLD 4006, Australia
| | - Johannes B Prins
- ∇Mater Research Institute, The University of Queensland, Brisbane, QLD 4101, Australia
| | - Harendra S Parekh
- †School of Pharmacy, Pharmacy Australia Centre of Excellence, The University of Queensland, Brisbane, QLD 4102, Australia
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159
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Wang P, Feng LW, Wang L, Li JF, Liao S, Tang Y. Asymmetric 1,2-Perfluoroalkyl Migration: Easy Access to Enantioenriched α-Hydroxy-α-perfluoroalkyl Esters. J Am Chem Soc 2015; 137:4626-9. [DOI: 10.1021/jacs.5b01517] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Pan Wang
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Liang-Wen Feng
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Lijia Wang
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Jun-Fang Li
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Saihu Liao
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Yong Tang
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
- Collaborative
Innovation Center of Chemical Science and Engineering (Tianjin)
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160
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Altaf QA, Barnett AH, Tahrani AA. Novel therapeutics for type 2 diabetes: insulin resistance. Diabetes Obes Metab 2015; 17:319-34. [PMID: 25308775 DOI: 10.1111/dom.12400] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Revised: 09/23/2014] [Accepted: 10/04/2014] [Indexed: 12/19/2022]
Abstract
Insulin resistance (IR) plays an important role in the pathogenesis of type 2 diabetes (T2D) and cardiovascular disease. Hence improving IR is a major target of treatment in patients with T2D. Obesity and lack of exercise are major causes of IR. However, recent evidence implicates sleep disorders and disorders of the circadian rhythm in the pathogenesis of IR. Weight loss and lifestyle changes are the cornerstone and most effective treatments of IR, but adherence and patient's acceptability are poor. Bariatric surgery results in significant and sustainable long-term weight loss associated with beneficial impact on IR and glucose metabolism, making this an attractive treatment option for patients with T2D. Currently available pharmacological options targeting IR (such as metformin and thiazolidinediones) do not maintain glycaemic measures within targets long term and can be associated with significant side effects. Over the last two decades, many pharmacological agents targeting different aspects of the insulin signalling pathway were developed to improve IR, but only a minority reached clinical trials. Such treatments need to be specific and reversible as many of the components of the insulin signalling pathway are involved in other cellular functions such as apoptosis. Recent evidence highlighted the role of circadian rhythm and sleep-related disorders in the pathogenesis of IR. In this article, we review the latest developments in the pharmacological and non-pharmacological interventions targeting IR including bariatric surgery. We will also review the role of circadian rhythm and sleep-related disorders in the development and treatment of IR.
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Affiliation(s)
- Q-A Altaf
- Department of Diabetes and Endocrinology, Heart of England NHS Foundation Trust, Birmingham, UK; Centre of Endocrinology, Diabetes and Metabolism, University of Birmingham, Birmingham, UK
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161
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Ruddraraju KV, Hillebrand R, Barnes CL, Gates KS. Crystal structure of 5-{4'-[(2-{2-[2-(2-ammonio-eth-oxy)eth-oxy]eth-oxy}eth-yl)carbamo-yl]-4-meth-oxy-[1,1'-biphen-yl]-3-yl}-3-oxo-1,2,5-thia-diazo-lidin-2-ide 1,1-dioxide: a potential inhibitor of the enzyme protein tyrosine phosphatase 1B (PTP1B). Acta Crystallogr E Crystallogr Commun 2015; 71:336-8. [PMID: 26029383 PMCID: PMC4438830 DOI: 10.1107/s2056989015003850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2015] [Accepted: 02/24/2015] [Indexed: 11/10/2022]
Abstract
The title compound, C24H32N4O8S, (I), crystallizes as a zwitterion. The terminal amine N atom of the [(2-{2-[2-(2-ammonio-eth-oxy)eth-oxy]eth-oxy}eth-yl)carbamo-yl] side chain is protonated, while the 1,2,5-thia-diazo-lidin-3-one 1,1-dioxide N atom is deprotonated. The side chain is turned over on itself with an intra-molecular N-H⋯O hydrogen bond. The 1,2,5-thia-diazo-lidin-3-one 1,1-dioxide ring has an envelope conformation with the aryl-substituted N atom as the flap. Its mean plane is inclined by 62.87 (8)° to the aryl ring to which it is attached, while the aryl rings of the biphenyl unit are inclined to one another by 20.81 (8)°. In the crystal, mol-ecules are linked by N-H⋯O and N-H⋯N hydrogen bonds, forming slabs lying parallel to (010). Within the slabs there are C-H⋯O and C-H⋯N hydrogen bonds and C-H⋯π inter-actions present.
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Affiliation(s)
| | - Roman Hillebrand
- 125 Chemistry Bldg, University of Missouri Columbia, MO 65211, USA
| | | | - Kent S. Gates
- 125 Chemistry Bldg, University of Missouri Columbia, MO 65211, USA
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162
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He WF, Liang LF, Cai YS, Gao LX, Li YF, Li J, Liu HL, Guo YW. Brominated polyunsaturated lipids with protein tyrosine phosphatase-1B inhibitory activity from Chinese marine sponge Xestospongia testudinaria. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2015; 17:861-866. [PMID: 25832997 DOI: 10.1080/10286020.2015.1026334] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A new brominated polyunsaturated lipid, methyl (E,E)-14,14-dibromo-4,6,13-tetradecatrienoate (1), along with three known related analogues (2-4), were isolated from the Et2O-soluble portion of the acetone extract of Chinese marine sponge Xestospongia testudinaria treated with diazomethane. The structure of the new compound was elucidated by detailed spectroscopic analysis and by comparison with literature data. Compound 3 exhibited significant inhibitory activity against protein tyrosine phosphatase 1B (PTP1B), a key target for the treatment of type II diabetes and obesity, with an IC50 value of 5.30 ± 0.61 μM, when compared to the positive control oleanolic acid (IC50 = 2.39 ± 0.26 μM).
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Affiliation(s)
- Wen-Fei He
- a School of Pharmaceutical Sciences, Wenzhou Medical University , Wenzhou 325035 , China
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163
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Chao B, Li BX, Xiao X. The chemistry and pharmacology of privileged pyrroloquinazolines. MEDCHEMCOMM 2015; 6:510-520. [PMID: 25937878 PMCID: PMC4412478 DOI: 10.1039/c4md00485j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The advent of next-generation sequencing (NGS) technology has plummeted the cost of whole genome sequencing, which has provided a long list of putative drug targets for a variety of diseases ranging from infectious diseases to cancers. The majority of these drug targets are still awaiting high-quality small molecule ligands to validate their therapeutic potential and track their druggability. Screening compound libraries based on privileged scaffolds is an efficient strategy to identify potential ligands to distinct biological targets. 7H-Pyrrolo[3,2-f]quinazoline (PQZ) is a potential privileged heterocyclic scaffold with diverse pharmacological properties. A number of biological targets have been identified for different derivatives of PQZ. This review summarized the synthetic strategies to access the chemical space associated with PQZ and discussed their unique biological profiles.
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Affiliation(s)
- Bo Chao
- Program in Chemical Biology, Department of Physiology and Pharmacology, Knight Cancer Institute, Oregon Health & Science University, Portland, Oregon 97239, USA
| | - Bingbing X. Li
- Program in Chemical Biology, Department of Physiology and Pharmacology, Knight Cancer Institute, Oregon Health & Science University, Portland, Oregon 97239, USA
| | - Xiangshu Xiao
- Program in Chemical Biology, Department of Physiology and Pharmacology, Knight Cancer Institute, Oregon Health & Science University, Portland, Oregon 97239, USA
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164
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Design and synthesis of novel 1,2-dithiolan-4-yl benzoate derivatives as PTP1B inhibitors. Bioorg Med Chem Lett 2015; 25:2211-6. [PMID: 25872983 DOI: 10.1016/j.bmcl.2015.03.060] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Revised: 03/19/2015] [Accepted: 03/20/2015] [Indexed: 11/23/2022]
Abstract
A series of novel 1,2-dithiolan-4-yl benzoate compounds were synthesized and evaluated for in vitro PTP1B inhibitory activity. Some derivatives exhibited improved PTP1B inhibitory activity and selectivity compared to hit 6a, a compound from in-house library screening inspired by marine cyclic disulfide. The preliminary SAR analysis with assistance of molecular modeling approach revealed 6j (IC50=0.59μM) as the most potent PTP1B inhibitor among all derivatives.
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165
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Dokainish HM, Gauld JW. Formation of a Stable Iminol Intermediate in the Redox Regulation Mechanism of Protein Tyrosine Phosphatase 1B (PTP1B). ACS Catal 2015. [DOI: 10.1021/cs501707h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hisham M. Dokainish
- Department
of Chemistry and
Biochemistry, University of Windsor, Windsor, Ontario N9B 3P4, Canada
| | - James W. Gauld
- Department
of Chemistry and
Biochemistry, University of Windsor, Windsor, Ontario N9B 3P4, Canada
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166
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Hobiger K, Friedrich T. Voltage sensitive phosphatases: emerging kinship to protein tyrosine phosphatases from structure-function research. Front Pharmacol 2015; 6:20. [PMID: 25713537 PMCID: PMC4322731 DOI: 10.3389/fphar.2015.00020] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Accepted: 01/21/2015] [Indexed: 02/03/2023] Open
Abstract
The transmembrane protein Ci-VSP from the ascidian Ciona intestinalis was described as first member of a fascinating family of enzymes, the voltage sensitive phosphatases (VSPs). Ci-VSP and its voltage-activated homologs from other species are stimulated by positive membrane potentials and dephosphorylate the head groups of negatively charged phosphoinositide phosphates (PIPs). In doing so, VSPs act as control centers at the cytosolic membrane surface, because they intervene in signaling cascades that are mediated by PIP lipids. The characteristic motif CX5RT/S in the active site classifies VSPs as members of the huge family of cysteine-based protein tyrosine phosphatases (PTPs). Although PTPs have already been well-characterized regarding both, structure and function, their relationship to VSPs has drawn only limited attention so far. Therefore, the intention of this review is to give a short overview about the extensive knowledge about PTPs in relation to the facts known about VSPs. Here, we concentrate on the structural features of the catalytic domain which are similar between both classes of phosphatases and their consequences for the enzymatic function. By discussing results obtained from crystal structures, molecular dynamics simulations, and mutagenesis studies, a possible mechanism for the catalytic cycle of VSPs is presented based on that one proposed for PTPs. In this way, we want to link the knowledge about the catalytic activity of VSPs and PTPs.
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Affiliation(s)
- Kirstin Hobiger
- Department of Neurophysiology, Institute of Physiology and Pathophysiology, Philipps-Universität Marburg Marburg, Germany
| | - Thomas Friedrich
- Max-Volmer-Laboratory of Biophysical Chemistry, Institute of Chemistry, Technische Universität Berlin Berlin, Germany
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167
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Wang LJ, Jiang B, Wu N, Wang SY, Shi DY. Natural and semisynthetic protein tyrosine phosphatase 1B (PTP1B) inhibitors as anti-diabetic agents. RSC Adv 2015. [DOI: 10.1039/c5ra01754h] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Natural products offered more opportunities to develop new drugs and leading compounds as potent PTP1B inhibitors for treating T2DM.
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Affiliation(s)
- Li-Jun Wang
- Institute of Oceanology
- Chinese Academy of Sciences
- Qingdao
- China
| | - Bo Jiang
- Institute of Oceanology
- Chinese Academy of Sciences
- Qingdao
- China
| | - Ning Wu
- Institute of Oceanology
- Chinese Academy of Sciences
- Qingdao
- China
| | - Shuai-Yu Wang
- Institute of Oceanology
- Chinese Academy of Sciences
- Qingdao
- China
| | - Da-Yong Shi
- Institute of Oceanology
- Chinese Academy of Sciences
- Qingdao
- China
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168
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Ji S, Qiao X, Li ZW, Wang YR, Yu SW, Liang WF, Lin XH, Ye M. Enantiomeric 3-arylcoumarins and 2-arylcoumarones from the roots of Glycyrrhiza uralensis as protein tyrosine phosphatase 1B (PTP1B) inhibitors. RSC Adv 2015. [DOI: 10.1039/c5ra06452j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Four new PTP1B inhibitors were isolated from Glycyrrhiza uralensis, and the absolute configuration of 2,3-dihydro-2,3,3-trimethylbenzofurans was first unambiguously established.
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Affiliation(s)
- Shuai Ji
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Xue Qiao
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Zi-wei Li
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Yong-rui Wang
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Si-wang Yu
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Wen-fei Liang
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Xiong-hao Lin
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Min Ye
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
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169
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Chen Y, Lin PX, Hsieh CL, Peng CC, Peng RY. The proteomic and genomic teratogenicity elicited by valproic acid is preventable with resveratrol and α-tocopherol. PLoS One 2014; 9:e116534. [PMID: 25551574 PMCID: PMC4281235 DOI: 10.1371/journal.pone.0116534] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Accepted: 11/28/2014] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Previously, we reported that valproic acid (VPA), a common antiepileptic drug and a potent teratogenic, dowregulates RBP4 in chicken embryo model (CEM) when induced by VPA. Whether such teratogenicity is associated with more advanced proteomic and genomic alterations, we further performed this present study. METHODOLOGY/PRINCIPAL FINDINGS VPA (60 µM) was applied to 36 chicken embryos at HH stage 10 (day-1.5). Resveratrol (RV) and vitamin E (vit E) (each at 0.2 and 2.0 µM) were applied simultaneously to explore the alleviation effect. The proteins in the cervical muscles of the day-1 chicks were analyzed using 2D-electrophoresis and LC/MS/MS. While the genomics associated with each specific protein alteration was examined with RT-PCR and qPCR. At earlier embryonic stage, VPA downregulated PEBP1 and BHMT genes and at the same time upregulated MYL1, ALB and FLNC genes significantly (p<0.05) without affecting PKM2 gene. Alternatively, VPA directly inhibited the folate-independent (or the betaine-dependent) remethylation pathway. These features were effectively alleviated by RV and vit E. CONCLUSIONS VPA alters the expression of PEBP1, BHMT, MYL1, ALB and FLNC that are closely related with metabolic myopathies, myogenesis, albumin gene expression, and haemolytic anemia. On the other hand, VPA directly inhibits the betaine-dependent remethylation pathway. Taken together, VPA elicits hemorrhagic myoliposis via these action mechanisms, and RV and vit E are effective for alleviation of such adverse effects.
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Affiliation(s)
- Yeh Chen
- Research Institute of Biotechnology, Hungkuang University, 34 Chung-Chie Rd., Shalu County, Taichung Hsien, Taiwan 43302
| | - Ping-Xiao Lin
- Graduate Institute of Biotechnology, Changhua University of Education, 1 Jin-De Rd., Changhua, Taiwan 50007
| | - Chiu-Lan Hsieh
- Graduate Institute of Biotechnology, Changhua University of Education, 1 Jin-De Rd., Changhua, Taiwan 50007
| | - Chiung-Chi Peng
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, 250 Wu-Shing St., Taipei, Taiwan 11031
| | - Robert Y. Peng
- Research Institute of Biotechnology, Hungkuang University, 34 Chung-Chie Rd., Shalu County, Taichung Hsien, Taiwan 43302
- Research Institute of Medicinal Sciences, College of Medicine, Taipei Medical University, 250 Wu-Xing St., Taipei, Taiwan 11031
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170
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Camacho-Soto K, Castillo-Montoya J, Tye B, Ogunleye LO, Ghosh I. Small molecule gated split-tyrosine phosphatases and orthogonal split-tyrosine kinases. J Am Chem Soc 2014; 136:17078-86. [PMID: 25409264 DOI: 10.1021/ja5080745] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Protein kinases phosphorylate client proteins, while protein phosphatases catalyze their dephosphorylation and thereby in concert exert reversible control over numerous signal transduction pathways. We have recently reported the design and validation of split-protein kinases that can be conditionally activated by an added small molecule chemical inducer of dimerization (CID), rapamycin. Herein, we provide the rational design and validation of three split-tyrosine phosphatases (PTPs) attached to FKBP and FRB, where catalytic activity can be modulated with rapamycin. We further demonstrate that the orthogonal CIDs, abscisic acid and gibberellic acid, can be used to impart control over the activity of split-tyrosine kinases (PTKs). Finally, we demonstrate that designed split-phosphatases and split-kinases can be activated by orthogonal CIDs in mammalian cells. In sum, we provide a methodology that allows for post-translational orthogonal small molecule control over the activity of user defined split-PTKs and split-PTPs. This methodology has the long-term potential for both interrogating and redesigning phosphorylation dependent signaling pathways.
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Affiliation(s)
- Karla Camacho-Soto
- Department of Chemistry and Biochemistry, University of Arizona , 1306 East University Boulevard, Tucson, Arizona 85721, United States
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171
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Vajapey R, Rini D, Walston J, Abadir P. The impact of age-related dysregulation of the angiotensin system on mitochondrial redox balance. Front Physiol 2014; 5:439. [PMID: 25505418 PMCID: PMC4241834 DOI: 10.3389/fphys.2014.00439] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Accepted: 10/27/2014] [Indexed: 12/13/2022] Open
Abstract
Aging is associated with the accumulation of various deleterious changes in cells. According to the free radical and mitochondrial theory of aging, mitochondria initiate most of the deleterious changes in aging and govern life span. The failure of mitochondrial reduction-oxidation (redox) homeostasis and the formation of excessive free radicals are tightly linked to dysregulation in the Renin Angiotensin System (RAS). A main rate-controlling step in RAS is renin, an enzyme that hydrolyzes angiotensinogen to generate angiotensin I. Angiotensin I is further converted to Angiotensin II (Ang II) by angiotensin-converting enzyme (ACE). Ang II binds with equal affinity to two main angiotensin receptors—type 1 (AT1R) and type 2 (AT2R). The binding of Ang II to AT1R activates NADPH oxidase, which leads to increased generation of cytoplasmic reactive oxygen species (ROS). This Ang II-AT1R–NADPH-ROS signal triggers the opening of mitochondrial KATP channels and mitochondrial ROS production in a positive feedback loop. Furthermore, RAS has been implicated in the decrease of many of ROS scavenging enzymes, thereby leading to detrimental levels of free radicals in the cell. AT2R is less understood, but evidence supports an anti-oxidative and mitochondria-protective function for AT2R. The overlap between age related changes in RAS and mitochondria, and the consequences of this overlap on age-related diseases are quite complex. RAS dysregulation has been implicated in many pathological conditions due to its contribution to mitochondrial dysfunction. Decreased age-related, renal and cardiac mitochondrial dysfunction was seen in patients treated with angiotensin receptor blockers. The aim of this review is to: (a) report the most recent information elucidating the role of RAS in mitochondrial redox hemostasis and (b) discuss the effect of age-related activation of RAS on generation of free radicals.
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Affiliation(s)
- Ramya Vajapey
- School of Medicine, Northeast Ohio Medical University Rootstown, OH, USA
| | - David Rini
- Division of Cellular and Molecular Medicine, Art as Applied to Medicine, Johns Hopkins University Baltimore, MD, USA
| | - Jeremy Walston
- Division of Geriatrics Medicine and Gerontology, Department of Medicine, Johns Hopkins University Baltimore, MD, USA
| | - Peter Abadir
- Division of Geriatrics Medicine and Gerontology, Department of Medicine, Johns Hopkins University Baltimore, MD, USA
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172
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Soliev AB, Hosokawa K, Enomoto K. Effects of prodigiosin family compounds from Pseudoalteromonas sp. 1020R on the activities of protein phosphatases and protein kinases. J Enzyme Inhib Med Chem 2014; 30:533-8. [PMID: 25373498 DOI: 10.3109/14756366.2014.951347] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Pseudoalteromonas sp. strain 1020R produces prodigiosin and its closely related congeners, which differ in the length of their alkyl side chains. These red-pigmented compounds were found to exhibit cytotoxicity against human leukemia cell lines. The compounds also showed dose-dependent inhibitory effects on protein phosphatase 2A and protein tyrosine phosphatase 1B (PTP1B), while remaining relatively inactive against protein kinases, including protein tyrosine kinase, Ca(2+)/calmodulin-dependent protein kinase and protein kinases A and C. Comparative studies of the individual pigmented compounds on PTP1B inhibition showed that as the chain length of the alkyl group at the C-3 position of the compound increased, the inhibitory effect on PTP1B decreased. These results suggest that protein phosphatases but not protein kinases might be involved in the cytotoxicity of the prodigiosin family of compounds against malignant cells.
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Affiliation(s)
- Azamjon B Soliev
- Department of Environmental Systems Engineering, Kochi University of Technology , Kochi , Japan
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173
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Vasamsetty L, Sahu D, Ganguly B, Khan FA, Mehta G. Total synthesis of novel bioactive natural product paracaseolide A and analogues: computational evaluation of a ‘proposed’ biomimetic Diels–Alder reaction. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.09.072] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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174
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Identification of novel PTP1B inhibitors by pharmacophore based virtual screening, scaffold hopping and docking. Eur J Med Chem 2014; 87:578-94. [DOI: 10.1016/j.ejmech.2014.09.097] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Revised: 09/03/2014] [Accepted: 09/30/2014] [Indexed: 11/23/2022]
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175
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He R, Bai Y, Yu ZH, Wu L, Gunawan AM, Zhang ZY. Diversity-Oriented Synthesis for Novel, Selective and Drug-like Inhibitors for a Phosphatase from Mycobacterium Tuberculosis. MEDCHEMCOMM 2014; 5:1496-1499. [PMID: 25505942 PMCID: PMC4259018 DOI: 10.1039/c4md00099d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Mycobacterium protein tyrosine phosphatase B (mPTPB) is a potential drug target of Tuberculosis (TB). Small molecule inhibitors of mPTPB could be a treatment to overcome emerging TB drug resistance. Using a Diversity-Oriented Synthesis (DOS) strategy, we successfully developed a salicylic acid based and drug-like mPTPB inhibitor with an IC50 of 2 μM and >20-fold specificity over many human PTPs, making it an excellent lead molecule for anti-TB drug discovery. In addition, DOS generated bicyclic salicylic acids are also promising starting points for acquiring inhibitors targeting other PTPs.
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Affiliation(s)
- Rongjun He
- Department of Biochemistry and Molecular Biology, Chemical Genomics Core Facility, Indiana University School of Medicine, 635 Barnhill Drive, Indianapolis, IN, USA, 46202
| | - Yunpeng Bai
- Department of Biochemistry and Molecular Biology, Chemical Genomics Core Facility, Indiana University School of Medicine, 635 Barnhill Drive, Indianapolis, IN, USA, 46202
| | - Zhi-Hong Yu
- Department of Biochemistry and Molecular Biology, Chemical Genomics Core Facility, Indiana University School of Medicine, 635 Barnhill Drive, Indianapolis, IN, USA, 46202
| | - Li Wu
- Department of Biochemistry and Molecular Biology, Chemical Genomics Core Facility, Indiana University School of Medicine, 635 Barnhill Drive, Indianapolis, IN, USA, 46202
| | - Andrea Michelle Gunawan
- Department of Biochemistry and Molecular Biology, Chemical Genomics Core Facility, Indiana University School of Medicine, 635 Barnhill Drive, Indianapolis, IN, USA, 46202
| | - Zhong-Yin Zhang
- Department of Biochemistry and Molecular Biology, Chemical Genomics Core Facility, Indiana University School of Medicine, 635 Barnhill Drive, Indianapolis, IN, USA, 46202
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176
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Ding H, Zhang Y, Xu C, Hou D, Li J, Zhang Y, Peng W, Zen K, Zhang CY, Jiang X. Norathyriol reverses obesity- and high-fat-diet-induced insulin resistance in mice through inhibition of PTP1B. Diabetologia 2014; 57:2145-54. [PMID: 24985145 DOI: 10.1007/s00125-014-3315-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Accepted: 06/06/2014] [Indexed: 12/17/2022]
Abstract
AIM/HYPOTHESIS Protein tyrosine phosphatase 1B (PTP1B) negatively regulates insulin signalling. PTP1B deficiency improves obesity-induced insulin resistance and consequently improves type 2 diabetes in mice. Here, the small molecule norathyriol reversed obesity- and high-fat-diet-induced insulin resistance by inhibiting PTP1B. METHODS The inhibitory mode of PTP1B was evaluated by using the double-reciprocal substrate in the presence of norathyriol. Primary cultured hepatocytes, myoblasts and white adipocytes were used to investigate the effect of norathyriol on insulin signalling. Glucose homeostasis and insulin sensitivity were characterised by glucose and insulin tolerance tests. RESULTS Norathyriol was identified as a competitive inhibitor of PTP1B, with an IC50 of 9.59 ± 0.39 μmol/l. In cultured hepatocytes and myoblasts, norathyriol treatment blocked the PTP1B-mediated dephosphorylation of the insulin receptor. Intraperitoneal injection of norathyriol inhibited liver and muscle PTP1B activity in mice, thus contributing to the improved glucose homeostasis and insulin sensitivity. However, these beneficial effects were abolished in PTP1B-deficient mice. Notably, oral administration of norathyriol protected mice from diet-induced obesity and insulin resistance through inhibition of hypothalamic PTP1B activity. CONCLUSIONS/INTERPRETATION Our results indicate that the small molecule norathyriol is a potent PTP1B inhibitor with good cell permeability and oral availability.
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Affiliation(s)
- Hanying Ding
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, 210093, Nanjing, Jiangsu, People's Republic of China
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177
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He RJ, Yu ZH, Zhang RY, Zhang ZY. Protein tyrosine phosphatases as potential therapeutic targets. Acta Pharmacol Sin 2014; 35:1227-46. [PMID: 25220640 DOI: 10.1038/aps.2014.80] [Citation(s) in RCA: 228] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Accepted: 07/31/2014] [Indexed: 12/17/2022] Open
Abstract
Protein tyrosine phosphorylation is a key regulatory process in virtually all aspects of cellular functions. Dysregulation of protein tyrosine phosphorylation is a major cause of human diseases, such as cancers, diabetes, autoimmune disorders, and neurological diseases. Indeed, protein tyrosine phosphorylation-mediated signaling events offer ample therapeutic targets, and drug discovery efforts to date have brought over two dozen kinase inhibitors to the clinic. Accordingly, protein tyrosine phosphatases (PTPs) are considered next-generation drug targets. For instance, PTP1B is a well-known targets of type 2 diabetes and obesity, and recent studies indicate that it is also a promising target for breast cancer. SHP2 is a bona-fide oncoprotein, mutations of which cause juvenile myelomonocytic leukemia, acute myeloid leukemia, and solid tumors. In addition, LYP is strongly associated with type 1 diabetes and many other autoimmune diseases. This review summarizes recent findings on several highly recognized PTP family drug targets, including PTP1B, Src homology phosphotyrosyl phosphatase 2(SHP2), lymphoid-specific tyrosine phosphatase (LYP), CD45, Fas associated phosphatase-1 (FAP-1), striatal enriched tyrosine phosphatases (STEP), mitogen-activated protein kinase/dual-specificity phosphatase 1 (MKP-1), phosphatases of regenerating liver-1 (PRL), low molecular weight PTPs (LMWPTP), and CDC25. Given that there are over 100 family members, we hope this review will serve as a road map for innovative drug discovery targeting PTPs.
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178
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Lapchak PA, Lara JA, Boitano PD. 4-((1E)-2-(5-(4-hydroxy-3-methoxystyryl-)-1-phenyl-1H-pyrazoyl-3-yl) vinyl)-2-methoxy-phenol) (CNB-001) Does Not Regulate Human Recombinant Protein-Tyrosine Phosphatase1B (PTP1B) Activity in vitro.. JOURNAL OF NEUROLOGY & NEUROPHYSIOLOGY 2014; 5. [PMID: 25364621 PMCID: PMC4213551 DOI: 10.4172/2155-9562.1000232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Protein-Tyrosine Phosphatase1B (PTP1B) is a negative regulator of the insulin signaling pathway and is a potential therapeutic target for treatment of type 2 diabetes, cardiovascular disease, metabolic syndrome and cancer. It has been postulated that CNB-001 [4-((1E)-2-(5-(4-hydroxy-3-methoxystyryl-)-1-phenyl-1H-pyrazoyl-3-yl) vinyl)-2-methoxy-phenol)] may regulate PTP1B activity suggested by a computer-based active site docking recognition model. This possibility was studied using a human recombinant PTP1B assay, and a phospho-peptide fragment of the insulin receptor β subunit domain (IR5). The positive control, suramin, inhibited PTP1B with an IC50 (half minimal (50%) inhibitory concentration) value of 16.34 µM; CNB-001 did not affect enzyme activity across the range of 1nM-0.1mM. This study suggests that PTP1B inhibition is not involved in the beneficial effects of CNB-001 in obese type 2 diabetic mice.
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Affiliation(s)
- Paul A Lapchak
- Department of Neurology, Cedars-Sinai Medical Center, Advanced Health Sciences Pavilion, Los Angeles, USA ; Department of Neurosurgery, Cedars-Sinai Medical Center, Advanced Health Sciences Pavilion, Los Angeles, USA
| | - Jacqueline A Lara
- Department of Neurology, Cedars-Sinai Medical Center, Advanced Health Sciences Pavilion, Los Angeles, USA
| | - Paul D Boitano
- Department of Neurology, Cedars-Sinai Medical Center, Advanced Health Sciences Pavilion, Los Angeles, USA
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179
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Liu C, Wang F, Wang Y, Li Z. A versatile fluorescence turn-on assay for highly sensitive detection of tyrosine phosphatase activity. Chem Commun (Camb) 2014; 50:13983-6. [DOI: 10.1039/c4cc06793b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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180
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Targeting protein tyrosine phosphatase SHP2 for therapeutic intervention. Future Med Chem 2014; 6:1423-37. [DOI: 10.4155/fmc.14.88] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Protein tyrosine phosphatases have been the focus of considerable research efforts aimed at developing novel therapeutics; however, these targets are often characterized as being ‘undruggable’ due to the challenge of achieving selectivity, potency and cell permeability. More recently, there has been renewed interest in developing inhibitors of the tyrosine phosphatase SHP2 (PTPN11) in the light of its broad role in cancer, specifically juvenile myelomonocytic leukemia, and recent studies that implicate SHP2 as a key factor in breast cancer progression. Recent significant advances in the field of SHP2 inhibitor development raise the question: are we on the verge of a new era of protein tyrosine phosphatase-directed therapeutics? This article critically appraises recent developments, assesses ongoing challenges and presents a perspective on possible future directions.
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181
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Ghattas MA, Atatreh N, Bichenkova EV, Bryce RA. Protein tyrosine phosphatases: Ligand interaction analysis and optimisation of virtual screening. J Mol Graph Model 2014; 52:114-23. [PMID: 25038507 DOI: 10.1016/j.jmgm.2014.06.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Revised: 06/23/2014] [Accepted: 06/26/2014] [Indexed: 11/28/2022]
Abstract
Docking-based virtual screening is an established component of structure-based drug discovery. Nevertheless, scoring and ranking of computationally docked ligand libraries still suffer from many false positives. Identifying optimal docking parameters for a target protein prior to virtual screening can improve experimental hit rates. Here, we examine protocols for virtual screening against the important but challenging class of drug target, protein tyrosine phosphatases. In this study, common interaction features were identified from analysis of protein-ligand binding geometries of more than 50 complexed phosphatase crystal structures. It was found that two interactions were consistently formed across all phosphatase inhibitors: (1) a polar contact with the conserved arginine residue, and (2) at least one interaction with the P-loop backbone amide. In order to investigate the significance of these features on phosphatase-ligand binding, a series of seeded virtual screening experiments were conducted on three phosphatase enzymes, PTP1B, Cdc25b and IF2. It was observed that when the conserved arginine and P-loop amide interactions were used as pharmacophoric constraints during docking, enrichment of the virtual screen significantly increased in the three studied phosphatases, by up to a factor of two in some cases. Additionally, the use of such pharmacophoric constraints considerably improved the ability of docking to predict the inhibitor's bound pose, decreasing RMSD to the crystallographic geometry by 43% on average. Constrained docking improved enrichment of screens against both open and closed conformations of PTP1B. Incorporation of an ordered water molecule in PTP1B screening was also found to generally improve enrichment. The knowledge-based computational strategies explored here can potentially inform structure-based design of new phosphatase inhibitors using docking-based virtual screening.
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Affiliation(s)
- Mohammad A Ghattas
- College of Pharmacy, Al Ain University of Science and Technology, Al Ain 64141, United Arab Emirates
| | - Noor Atatreh
- College of Pharmacy, Al Ain University of Science and Technology, Al Ain 64141, United Arab Emirates
| | - Elena V Bichenkova
- Manchester Pharmacy School, University of Manchester, Oxford Road, Manchester M13 9PT, UK
| | - Richard A Bryce
- Manchester Pharmacy School, University of Manchester, Oxford Road, Manchester M13 9PT, UK.
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182
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Zhi Y, Gao LX, Jin Y, Tang CL, Li JY, Li J, Long YQ. 4-Quinolone-3-carboxylic acids as cell-permeable inhibitors of protein tyrosine phosphatase 1B. Bioorg Med Chem 2014; 22:3670-83. [DOI: 10.1016/j.bmc.2014.05.028] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Revised: 05/06/2014] [Accepted: 05/07/2014] [Indexed: 10/25/2022]
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183
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Redox-based probes as tools to monitor oxidized protein tyrosine phosphatases in living cells. Eur J Med Chem 2014; 88:28-33. [PMID: 24974258 DOI: 10.1016/j.ejmech.2014.06.040] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Revised: 06/15/2014] [Accepted: 06/18/2014] [Indexed: 01/12/2023]
Abstract
Reversible oxidation of protein tyrosine phosphatases (PTPs) has emerged as an important regulatory mechanism whereby reactive oxygen species (ROS) inactivates the PTP and promotes phosphorylation and induction of the signaling cascade. The lack of sensitive and robust methods to directly detect oxidized PTPs has made it difficult to understand the effects that PTP oxidative inactivation play in redox signaling. We report the use of redox-based probes to directly detect oxidized PTPs in a cellular context, which highlights the importance of direct approaches to assist in the study of physiological and pathophysiological PTP activity in redox regulation. We also demonstrate, as a proof-of-concept, that these redox-based probes serve as prototypes for the design and development of a new class of inhibitors for phosphatases. We envision a nucleophile reacting with the oxidized inactive catalytic cysteine to generate an irreversible thioether adduct which prevents the phosphatase from being reactivated and ultimately fortifies the signaling cascade. Our results reveal the potential of translation of our redox-based probes, which are used to understand redox cell circuitry and disease biology, to small-molecule nucleophile-based inhibitors, which may treat diseases associated with redox stress. This may have implications in the treatment of type 2 diabetes and cancer.
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184
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Wu WB, Zhang H, Dong SH, Sheng L, Wu Y, Li J, Yue JM. New triterpenoids with protein tyrosine phosphatase 1B inhibition from Cedrela odorata. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2014; 16:709-716. [PMID: 24841003 DOI: 10.1080/10286020.2014.919281] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Accepted: 04/25/2014] [Indexed: 06/03/2023]
Abstract
Two new apotirucallane-type triterpenoids, cedrodorols A-B (1 and 2), along with seven known compounds (3-9), were isolated from the twigs and leaves of Cedrela odorata. Their structures were elucidated on the basis of extensive spectroscopic analysis. Compounds 1 and 2 showed significant inhibitory activity against protein tyrosine phosphatase 1B (PTP1B) with the IC50 values of 13.09 and 3.93 μg/ml, respectively.
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Affiliation(s)
- Wen-Bin Wu
- a State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203 , China
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185
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Abstract
SIGNIFICANCE Protein tyrosine phosphatases (PTPs) are important enzymes that are involved in the regulation of cellular signaling. Evidence accumulated over the years has indicated that PTPs present exciting opportunities for drug discovery against diseases such as diabetes, cancer, autoimmune diseases, and tuberculosis. However, the highly conserved and partially positive charge of the catalytic sites of PTPs is a major challenge in the development of potent and highly selective PTP inhibitors. RECENT ADVANCES Here, we examine the strategy of developing bidentate inhibitors for selective inhibition of PTPs. Bidentate inhibitors are small-molecular-weight compounds with the ability to bind to both the active site and a non-conserved secondary phosphate binding site. This secondary phosphate binding site was initially discovered in protein tyrosine phosphatase 1B (PTP1B), and, hence, most of the bidentate inhibitors reported in this review are PTP1B inhibitors. CRITICAL ISSUES Although bidentate inhibition is a good strategy for developing potent and selective inhibitors, the cell membrane permeability and pharmacokinetic properties of the inhibitors are also important for successful drug development. In this review, we will also summarize the various efforts made toward the development of phosphotyrosine (pTyr) mimetics for increasing cellular permeability. FUTURE DIRECTIONS Even though the secondary phosphate binding site was initially found in PTP1B, structural data have shown that a secondary binding site can also be found in other PTPs, albeit with varying degrees of accessibility. Along with improvements in pTyr mimetics, we believe that the future will see an increase in the number of orally bioavailable bidentate inhibitors against the various classes of PTPs.
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Affiliation(s)
- Joo-Leng Low
- 1 Institute of Chemical and Engineering Sciences , Agency for Science Technology and Research, Singapore, Singapore
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186
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Liu Q, Guo T, Li D, Li F, Li W. Synthesis and evaluation of several oleanolic acid glycoconjugates as protein tyrosine phosphatase 1B inhibitors. Eur J Med Chem 2014; 79:34-46. [DOI: 10.1016/j.ejmech.2014.03.080] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Revised: 03/17/2014] [Accepted: 03/28/2014] [Indexed: 01/24/2023]
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187
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Khan MF, Mishra DP, Ramakrishna E, Rawat AK, Mishra A, Srivastava AK, Maurya R. Design and synthesis of lupeol analogues and their in vitro PTP-1B inhibitory activity. Med Chem Res 2014. [DOI: 10.1007/s00044-014-0984-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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188
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Tang YB, Liu JZ, Zhang SE, Du X, Nie F, Tian JY, Ye F, Huang K, Hu JP, Li Y, Xiao Z. 3-Phenylpropanoic Acid-Based Phosphotyrosine (pTyr) Mimetics: Hit Evolution to a Novel Orally Active Protein Tyrosine Phosphatase 1B (PTP1B) Inhibitor. ChemMedChem 2014; 9:918-21. [DOI: 10.1002/cmdc.201400007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2014] [Indexed: 11/09/2022]
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189
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van Ameijde J, Overvoorde J, Knapp S, den Hertog J, Ruijtenbeek R, Liskamp RMJ. A versatile spectrophotometric protein tyrosine phosphatase assay based on 3-nitrophosphotyrosine containing substrates. Anal Biochem 2014; 448:9-13. [PMID: 24309020 DOI: 10.1016/j.ab.2013.11.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Revised: 11/14/2013] [Accepted: 11/22/2013] [Indexed: 10/26/2022]
Abstract
A versatile assay for protein tyrosine phosphatases (PTP) employing 3-nitrophosphotyrosine containing peptidic substrates is described. These therapeutically important phosphatases feature in signal transduction pathways. The assay involves spectrophotometric detection of 3-nitrotyrosine production from 3-nitrophosphotyrosine containing peptidic substrates, which are accepted by many PTPs. Compared to conventional chromogenic phosphate derivatives, the more realistic peptidic substrates allow evaluating substrate specificity. The assay's applicability is demonstrated by determining kinetic parameters for several PTP-substrate combinations and inhibitor evaluation, as well as detection of PTP activity in lysates. The convenient new assay may assist further adoption of PTPs in drug development.
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Affiliation(s)
- Jeroen van Ameijde
- Medicinal Chemistry and Chemical Biology, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands; Netherlands Proteomics Centre, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - John Overvoorde
- Hubrecht Institute, Uppsalalaan 8, P.O. Box 85164, 3508 AD Utrecht, The Netherlands
| | - Stefan Knapp
- Structural Genomics Consortium, Oxford University, Roosevelt Drive, Headington, Oxford OX3 7DQ, UK
| | - Jeroen den Hertog
- Hubrecht Institute, Uppsalalaan 8, P.O. Box 85164, 3508 AD Utrecht, The Netherlands; Institute of Biology, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Rob Ruijtenbeek
- Pamgene International Ltd., Wolvenhoek 10, P.O. Box 1345, 5200 BJ Den Bosch, The Netherlands
| | - Rob M J Liskamp
- Medicinal Chemistry and Chemical Biology, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands; School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ, UK.
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190
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Kenny PW, Newman J, Peat TS. Nitrate in the active site of protein tyrosine phosphatase 1B is a putative mimetic of the transition state. ACTA ACUST UNITED AC 2014; 70:565-71. [PMID: 24531490 DOI: 10.1107/s1399004713031052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Accepted: 11/12/2013] [Indexed: 11/10/2022]
Abstract
The X-ray crystal structure of the complex of protein tyrosine phosphatase 1B with nitrate anion has been determined and modelled quantum-mechanically. Two protomers were present in the structure, one with the mechanistically important WPD loop closed and the other with this loop open. Nitrate was observed bound to each protomer, making close contacts with the S atom of the catalytic cysteine and a tyrosine residue from a crystallographically related protomer.
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Affiliation(s)
- Peter W Kenny
- CSIRO Materials, Science and Engineering, 343 Royal Parade, Parkville, VIC 3052, Australia
| | - Janet Newman
- CSIRO Materials, Science and Engineering, 343 Royal Parade, Parkville, VIC 3052, Australia
| | - Thomas S Peat
- CSIRO Materials, Science and Engineering, 343 Royal Parade, Parkville, VIC 3052, Australia
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191
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Meanwell NA. The Influence of Bioisosteres in Drug Design: Tactical Applications to Address Developability Problems. TACTICS IN CONTEMPORARY DRUG DESIGN 2014; 9. [PMCID: PMC7416817 DOI: 10.1007/7355_2013_29] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The application of bioisosteres in drug discovery is a well-established design concept that has demonstrated utility as an approach to solving a range of problems that affect candidate optimization, progression, and durability. In this chapter, the application of isosteric substitution is explored in a fashion that focuses on the development of practical solutions to problems that are encountered in typical optimization campaigns. The role of bioisosteres to affect intrinsic potency and selectivity, influence conformation, solve problems associated with drug developability, including P-glycoprotein recognition, modulating basicity, solubility, and lipophilicity, and to address issues associated with metabolism and toxicity is used as the underlying theme to capture a spectrum of creative applications of structural emulation in the design of drug candidates.
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192
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Yin JP, Tang CL, Gao LX, Ma WP, Li JY, Li Y, Li J, Nan FJ. Design and synthesis of paracaseolide A analogues as selective protein tyrosine phosphatase 1B inhibitors. Org Biomol Chem 2014; 12:3441-5. [DOI: 10.1039/c4ob00214h] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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193
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Wang F, Liu C, Fan Y, Wang Y, Li Z. Robust detection of tyrosine phosphatase activity by coupling chymotrypsin-assisted selective peptide cleavage and a graphene oxide-based fluorescent platform. Chem Commun (Camb) 2014; 50:8161-3. [DOI: 10.1039/c4cc03498h] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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194
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Ottanà R, Maccari R, Mortier J, Caselli A, Amuso S, Camici G, Rotondo A, Wolber G, Paoli P. Synthesis, biological activity and structure–activity relationships of new benzoic acid-based protein tyrosine phosphatase inhibitors endowed with insulinomimetic effects in mouse C2C12 skeletal muscle cells. Eur J Med Chem 2014; 71:112-27. [DOI: 10.1016/j.ejmech.2013.11.001] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Revised: 10/24/2013] [Accepted: 11/01/2013] [Indexed: 12/29/2022]
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195
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Design, synthesis and molecular modelling studies of novel 3-acetamido-4-methyl benzoic acid derivatives as inhibitors of protein tyrosine phosphatase 1B. Eur J Med Chem 2013; 70:469-76. [DOI: 10.1016/j.ejmech.2013.10.030] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2013] [Revised: 10/09/2013] [Accepted: 10/11/2013] [Indexed: 11/20/2022]
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196
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Discovery of novel PTP1B inhibitors via pharmacophore-oriented scaffold hopping from Ertiprotafib. Bioorg Med Chem Lett 2013; 23:6217-22. [DOI: 10.1016/j.bmcl.2013.10.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Revised: 09/29/2013] [Accepted: 10/01/2013] [Indexed: 11/24/2022]
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197
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Matulka K, Lin HH, Hříbková H, Uwanogho D, Dvořák P, Sun YM. PTP1B Is an Effector of Activin Signaling and Regulates Neural Specification of Embryonic Stem Cells. Cell Stem Cell 2013; 13:706-19. [DOI: 10.1016/j.stem.2013.09.016] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Revised: 07/10/2013] [Accepted: 09/27/2013] [Indexed: 11/16/2022]
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198
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Evaluation of licorice flavonoids as protein tyrosine phosphatase 1B inhibitors. Bioorg Med Chem Lett 2013; 23:5836-9. [DOI: 10.1016/j.bmcl.2013.08.102] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Revised: 08/23/2013] [Accepted: 08/27/2013] [Indexed: 11/19/2022]
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199
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van Ameijde J, Overvoorde J, Knapp S, den Hertog J, Ruijtenbeek R, Liskamp RMJ. Real-Time Monitoring of the Dephosphorylating Activity of Protein Tyrosine Phosphatases Using Microarrays with 3-Nitrophosphotyrosine Substrates. Chempluschem 2013; 78:1349-1357. [PMID: 31986648 DOI: 10.1002/cplu.201300299] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Indexed: 11/10/2022]
Abstract
Phosphatases and kinases regulate the crucial phosphorylation post-translational modification. In spite of their similarly important role in many diseases and therapeutic potential, phosphatases have received arguably less attention. One reason for this is a scarcity of high-throughput phosphatase assays. Herein, a new real-time, dynamic protein tyrosine phosphatase (PTP) substrate microarray assay measuring product formation is described. PTP substrates comprising a novel 3-nitrophosphotyrosine residue are immobilized in discrete spots. After reaction catalyzed by a PTP a 3-nitrotyrosine residue is formed that can be detected by specific, sequence-independent antibodies. The resulting microarray was successfully evaluated with a panel of recombinant PTPs and cell lysates, which afforded results comparable to data from other assays. Its parallel nature, convenience, and low sample requirements facilitate investigation of the therapeutically relevant PTP enzyme family.
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Affiliation(s)
- Jeroen van Ameijde
- Medicinal Chemistry and Chemical Biology, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht (The Netherlands), Fax: (+31) (0)30-253-6655.,Netherlands Proteomics Centre, Padualaan 8, 3584 CA Utrecht (The Netherlands)
| | - John Overvoorde
- Hubrecht Institute, KNAW and University Medical Centre, Uppsalalaan 8, 3508 AD Utrecht (The Netherlands)
| | - Stefan Knapp
- Structural Genomics Consortium, Oxford University, Roosevelt Drive, Headington, Oxford OX3 7DQ (U.K.)
| | - Jeroen den Hertog
- Hubrecht Institute, KNAW and University Medical Centre, Uppsalalaan 8, 3508 AD Utrecht (The Netherlands).,Institute of Biology, Leiden University, P.O. Box 9502, 2300 RA Leiden (The Netherlands)
| | - Rob Ruijtenbeek
- Pamgene International Ltd. Wolvenhoek 10, 5200 BJ Den Bosch (The Netherlands)
| | - Rob M J Liskamp
- Medicinal Chemistry and Chemical Biology, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht (The Netherlands), Fax: (+31) (0)30-253-6655.,School of Chemistry, Joseph Black Building, Glasgow University, University Avenue, Glasgow G12 8QQ (U.K.)
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200
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Bharti SK, Kumar A, Sharma NK, Prakash O, Jaiswal SK, Krishnan S, Gupta AK, Kumar A. Tocopherol from seeds of Cucurbita pepo against diabetes: Validation by in vivo experiments supported by computational docking. J Formos Med Assoc 2013; 112:676-90. [DOI: 10.1016/j.jfma.2013.08.003] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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