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Alami O, Laurent R, Tassé M, Coppel Y, Bignon J, El Kazzouli S, Majoral JP, El Brahmi N, Caminade AM. "Click" Chemistry for the Functionalization of Graphene Oxide with Phosphorus Dendrons: Synthesis, Characterization and Preliminary Biological Properties. Chemistry 2023; 29:e202302198. [PMID: 37650869 DOI: 10.1002/chem.202302198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 08/30/2023] [Accepted: 08/31/2023] [Indexed: 09/01/2023]
Abstract
Two families of phosphorhydrazone dendrons having either an azide or an alkyne linked to the core and diverse types of pyridine derivatives as terminal functions have been synthesized and characterized. These dendrons were grafted via click reaction to graphene oxide (GO) functionalized with either alkyne or azide functions, respectively. The resulting modified-GO and GO-dendrons materials have been characterized by Fourier Transform Infrared (FTIR), Raman spectroscopy (RS), and Magic Angle Spinning Nuclear Magnetic Resonance (MAS NMR) analyses. In addition, the free dendrons and the dendrons grafted to GO were tested toward cancerous (HCT116) and non-cancerous (RPE1) cell lines.
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Affiliation(s)
- Omar Alami
- Laboratoire de Chimie de Coordination, CNRS, 205 route de Narbonne, 31077, Toulouse Cedex 4, France
- LCC-CNRS, Université de Toulouse, CNRS, Toulouse, France
- Euromed Research Center, Euromed Faculty of Pharmacy, Euromed University of Fes (UEMF), Route de Meknes, 30000, Fez, Morocco
| | - Régis Laurent
- Laboratoire de Chimie de Coordination, CNRS, 205 route de Narbonne, 31077, Toulouse Cedex 4, France
- LCC-CNRS, Université de Toulouse, CNRS, Toulouse, France
| | - Marine Tassé
- Laboratoire de Chimie de Coordination, CNRS, 205 route de Narbonne, 31077, Toulouse Cedex 4, France
- LCC-CNRS, Université de Toulouse, CNRS, Toulouse, France
| | - Yannick Coppel
- Laboratoire de Chimie de Coordination, CNRS, 205 route de Narbonne, 31077, Toulouse Cedex 4, France
- LCC-CNRS, Université de Toulouse, CNRS, Toulouse, France
| | - Jérôme Bignon
- Plateforme CIBI, ICSN, CNRS, Centre de Recherche de Gif, Bâtiment 27, 1 avenue de la Terrasse, 91198, Gif-sur-Yvette Cedex, France
| | - Saïd El Kazzouli
- Euromed Research Center, Euromed Faculty of Pharmacy, Euromed University of Fes (UEMF), Route de Meknes, 30000, Fez, Morocco
| | - Jean-Pierre Majoral
- Laboratoire de Chimie de Coordination, CNRS, 205 route de Narbonne, 31077, Toulouse Cedex 4, France
- LCC-CNRS, Université de Toulouse, CNRS, Toulouse, France
| | - Nabil El Brahmi
- Euromed Research Center, Euromed Faculty of Pharmacy, Euromed University of Fes (UEMF), Route de Meknes, 30000, Fez, Morocco
| | - Anne-Marie Caminade
- Laboratoire de Chimie de Coordination, CNRS, 205 route de Narbonne, 31077, Toulouse Cedex 4, France
- LCC-CNRS, Université de Toulouse, CNRS, Toulouse, France
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Rokni GR, Mohammadnezhad F, Saeedi M, Shadi S, Sharma A, Sandhu S, Gupta A, Goldust M. Efficacy, tolerability, and safety of montelukast versus finasteride for the treatment of moderate acne in women: A prospective, randomized, single-blinded, active-controlled trial. J Cosmet Dermatol 2021; 20:3580-3585. [PMID: 34648685 DOI: 10.1111/jocd.14462] [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: 07/13/2021] [Revised: 07/23/2021] [Accepted: 07/30/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND Acne is a chronic inflammatory skin disease which involves the pilosebaceous unit. Tissue inflammation isone of the crucial mechanisms, amongst others. Of the various cytokines, leukotriene B4 (LT-B4) is the most potentleucocyte chemotactic mediator. Montelukast is an antagonist of the LT-B4 receptor. Finasteride is an antiandrogen whichspecifically inhibits the 5α-reductase enzyme. AIMS This study aimed at comparing the efficacy, tolerability and safety of montelukast versus finasteride in the treatmentof moderate acne in women. PATIENTS/METHOD This randomized, single-blinded, prospective trial over 12 weeks recruited 65 female subjects with moderate acne vulgaris (Global Acne Grading System Scale) for evaluation. One group (n = 30) received oral montelukast (10 mg PO daily), while the second group (n = 25) received oral finasteride (2.5 mg PO daily) in combination with topical clindamycin 2% solution. Lesion count and acne severity were evaluated at time intervals of 0 (baseline), 4, 8, and 12 weeks. Adverse effects of the drugs were noted. RESULTS Both lesion count and severity of acne decreased significantly after treatment in both the groups as compared to the baseline. The acne severity score reached from 33.93 in time zero to 20.6 in the 12th week and 35.71 at baseline to 16.43 at the end of treatment in the Montelukast and Finasteride groups, respectively. Side effects were noted in 3 patients and 2 patients in the monteleukast and finasteride group, respectively, which were transient and non-serious in nature proving the satisfactory tolerability and safety of these two drugs. CONCLUSION The results of this study show that both montelukast and finasteride have good efficacy in the treatment of acne. Finasteride has more efficacy than montelukast for treating moderate acne in normo-androgenic women.
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Affiliation(s)
- Ghasem Rahmatpour Rokni
- Department of Dermatology, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Farzaneh Mohammadnezhad
- Department of Dermatology, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Majid Saeedi
- Department of Pharmaceutics, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Shiva Shadi
- Department of Dermatology, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Aseem Sharma
- Dermatology Unit, Skin Saga Centre for Dermatology, Mumbai, India
| | | | | | - Mohamad Goldust
- Department of Dermatology, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
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Röhn TA, Numao S, Otto H, Loesche C, Thoma G. Drug discovery strategies for novel leukotriene A4 hydrolase inhibitors. Expert Opin Drug Discov 2021; 16:1483-1495. [PMID: 34191664 DOI: 10.1080/17460441.2021.1948998] [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: 10/21/2022]
Abstract
IntroductionLeukotriene A4 hydrolase (LTA4H) is the final and rate limiting enzyme regulating the biosynthesis of leukotriene B4 (LTB4), a pro-inflammatory lipid mediator implicated in a large number of inflammatory pathologies. Inhibition of LTA4H not only prevents LTB4 biosynthesis but also induces a lipid mediator class-switch within the 5-lipoxygenase pathway, elevating biosynthesis of the anti-inflammatory lipid mediator Lipoxin A4. Ample preclinical evidence advocates LTA4H as attractive drug target for the treatment of chronic inflammatory diseases.Areas coveredThis review covers details about the biochemistry of LTA4H and describes its role in regulating pro- and anti-inflammatory mediator generation. It summarizes recent efforts in medicinal chemistry toward novel LTA4H inhibitors, recent clinical trials testing LTA4H inhibitors in pulmonary inflammatory diseases, and potential reasons for the discontinuation of former development programs.Expert opinionGiven the prominent role of LTB4 in initiating and perpetuating inflammation, LTA4H remains an appealing drug target. The reason former attempts targeting this enzyme have not met with success in the clinic can be attributed to compound-specific liabilities of first-generation inhibitors and/or choice of target indications to test this mode of action. A new generation of highly potent and selective LTA4H inhibitors is currently undergoing clinical testing in indications with a strong link to LTB4 biology.
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Affiliation(s)
- Till A Röhn
- Autoimmunity, Transplantation and Inflammation, Novartis Institutes for Biomedical Research, Basel, Switzerland
| | - Shin Numao
- Chemical Biology and Therapeutics, Novartis Institutes for Biomedical Research, Basel, Switzerland
| | - Heike Otto
- Autoimmunity, Transplantation and Inflammation, Novartis Institutes for Biomedical Research, Basel, Switzerland
| | - Christian Loesche
- Translational Medicine, Novartis Institutes for Biomedical Research, Basel, Switzerland
| | - Gebhard Thoma
- Global Discovery Chemistry, Novartis Institutes for Biomedical Research, Basel, Switzerland
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Qin R, Wang H, Yan A. Classification and QSAR models of leukotriene A4 hydrolase (LTA4H) inhibitors by machine learning methods. SAR AND QSAR IN ENVIRONMENTAL RESEARCH 2021; 32:411-431. [PMID: 33896285 DOI: 10.1080/1062936x.2021.1910862] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 03/27/2021] [Indexed: 06/12/2023]
Abstract
Leukotriene A4 hydrolase (LTA4H) is an important anti-inflammatory target which can convert leukotriene A4 (LTA4) into pro-inflammatory substance leukotriene B4 (LTB4). In this paper, we built 18 classification models for 463 LTA4H inhibitors by using support vector machine (SVM), random forest (RF) and K-Nearest Neighbour (KNN). The best classification model (Model 2A) was built from RF and MACCS fingerprints. The prediction accuracy of 88.96% and the Matthews correlation coefficient (MCC) of 0.74 had been achieved on the test set. We also divided the 463 LTA4H inhibitors into six subsets using K-Means. We found that the highly active LTA4H inhibitors mostly contained diphenylmethane or diphenyl ether as the scaffold and pyridine or piperidine as the side chain. In addition, six quantitative structure-activity relationship (QSAR) models for 172 LTA4H inhibitors were built by multiple linear regression (MLR) and SVM. The best QSAR model (Model 6A) was built by using SVM and CORINA Symphony descriptors. The coefficients of determination of the training set and the test set were equal to 0.81 and 0.79, respectively. Classification and QSAR models could be used for subsequent virtual screening, and the obtained fragments that were important for highly active inhibitors would be helpful for designing new LTA4H inhibitors.
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Affiliation(s)
- R Qin
- State Key Laboratory of Chemical Resource Engineering Department of Pharmaceutical Engineering, Beijing University of Chemical Technology, Beijing, P. R. China
| | - H Wang
- State Key Laboratory of Chemical Resource Engineering Department of Pharmaceutical Engineering, Beijing University of Chemical Technology, Beijing, P. R. China
| | - A Yan
- State Key Laboratory of Chemical Resource Engineering Department of Pharmaceutical Engineering, Beijing University of Chemical Technology, Beijing, P. R. China
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Parvathi EVK, Pinapati SR, Tamminana R, Rudraraju RR. Iron‐Promoted Synthesis of (2‐Oxy/Thio)benzothiazole. ChemistrySelect 2020. [DOI: 10.1002/slct.202003747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | | | - Ramana Tamminana
- Department of Chemistry GITAM Deemed to be University 562163 Bengaluru India
| | - Ramesh raju Rudraraju
- Department of Chemistry Acharya Nagarjuna University, Nagarjuna Nagar Guntur AP 522510 India
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Design and synthesis of Leukotriene A4 hydrolase inhibitors to alleviate idiopathic pulmonary fibrosis and acute lung injury. Eur J Med Chem 2020; 203:112614. [PMID: 32679453 DOI: 10.1016/j.ejmech.2020.112614] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 06/18/2020] [Accepted: 06/21/2020] [Indexed: 12/19/2022]
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Abstract
Two classes of mechanically interlocked molecules, [3]rotaxanes and knotted [1]rotaxanes, were the subject of this investigation. The necessary building blocks, alkyne-terminated axles containing two ammonium ions and azide-terminated stoppers, and azide-containing substituted macrocycles, have been synthesized and characterized. Different [3]rotaxanes were synthesized by copper-catalyzed “click” reactions between the azide stoppers and [3]pseudorotaxanes formed from the dialkyne axles and crown ethers (DB24C8). Methylation of the triazoles formed by the “click” reaction introduced a second binding site, and switching via deprotonation/protonation was investigated. In preliminary tests for the synthesis of a knotted [1]rotaxane, pseudorotaxanes were formed from azide-containing substituted macrocycles and dialkyne substituted diammonium axles, and copper-catalyzed “click” reactions were carried out. Mass spectral analyses showed successful double “click” reactions between two modified macrocycles and one axle. Whether a knotted [1]rotaxane was formed could not be determined.
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Zi Y, Schömberg F, Wagner K, Vilotijevic I. C–H Functionalization of Benzothiazoles via Thiazol-2-yl-phosphonium Intermediates. Org Lett 2020; 22:3407-3411. [DOI: 10.1021/acs.orglett.0c00882] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- You Zi
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University, Jena, Humboldtstr. 10, 07743 Jena, Germany
| | - Fritz Schömberg
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University, Jena, Humboldtstr. 10, 07743 Jena, Germany
| | - Konrad Wagner
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University, Jena, Humboldtstr. 10, 07743 Jena, Germany
| | - Ivan Vilotijevic
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University, Jena, Humboldtstr. 10, 07743 Jena, Germany
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Hiesinger K, Schott A, Kramer JS, Blöcher R, Witt F, Wittmann SK, Steinhilber D, Pogoryelov D, Gerstmeier J, Werz O, Proschak E. Design of Dual Inhibitors of Soluble Epoxide Hydrolase and LTA 4 Hydrolase. ACS Med Chem Lett 2020; 11:298-302. [PMID: 32184960 DOI: 10.1021/acsmedchemlett.9b00330] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 10/30/2019] [Indexed: 11/30/2022] Open
Abstract
Multitarget anti-inflammatory drugs interfering with the arachidonic acid cascade exhibit superior efficacy. In this study, a prototype dual inhibitor of soluble epoxide hydrolase (sEH) and LTA4 hydrolase (LTA4H) with submicromolar activity toward both targets has been designed and synthesized. Preliminary structure-activity relationship studies were performed to identify optimal substitution patterns. X-ray structure analysis of a promising dual inhibitor in complex with sEH, as well as molecular docking with LTA4H provided a rationale for further optimization. Hereby, scaffold extension was successfully applied to yield potent dual sEH/LTA4H inhibitors. The spectrum of pro- and anti-inflammatory lipid mediators was evaluated in M1 and M2 macrophages, stimulated with LPS, and incubated with the most promising compound 14. The effect of 14 on the inflammatory lipid mediator profile characterizes dual sEH/LTA4H inhibitors as an interesting option for future anti-inflammatory agent investigations.
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Affiliation(s)
- Kerstin Hiesinger
- Institute of Pharmaceutical Chemistry, Goethe University Frankfurt, Max-von-Laue-Strasse 9, 60438 Frankfurt, Germany
| | - Annika Schott
- Institute of Pharmaceutical Chemistry, Goethe University Frankfurt, Max-von-Laue-Strasse 9, 60438 Frankfurt, Germany
| | - Jan S. Kramer
- Institute of Pharmaceutical Chemistry, Goethe University Frankfurt, Max-von-Laue-Strasse 9, 60438 Frankfurt, Germany
| | - René Blöcher
- Institute of Pharmaceutical Chemistry, Goethe University Frankfurt, Max-von-Laue-Strasse 9, 60438 Frankfurt, Germany
| | - Finja Witt
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich-Schiller-University Jena, Philosophenweg 14, 07743 Jena, Germany
| | - Sandra K. Wittmann
- Institute of Pharmaceutical Chemistry, Goethe University Frankfurt, Max-von-Laue-Strasse 9, 60438 Frankfurt, Germany
| | - Dieter Steinhilber
- Institute of Pharmaceutical Chemistry, Goethe University Frankfurt, Max-von-Laue-Strasse 9, 60438 Frankfurt, Germany
| | - Denys Pogoryelov
- Institute of Pharmaceutical Chemistry, Goethe University Frankfurt, Max-von-Laue-Strasse 9, 60438 Frankfurt, Germany
| | - Jana Gerstmeier
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich-Schiller-University Jena, Philosophenweg 14, 07743 Jena, Germany
| | - Oliver Werz
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich-Schiller-University Jena, Philosophenweg 14, 07743 Jena, Germany
| | - Ewgenij Proschak
- Institute of Pharmaceutical Chemistry, Goethe University Frankfurt, Max-von-Laue-Strasse 9, 60438 Frankfurt, Germany
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Ippagunta SK, Pollock JA, Sharma N, Lin W, Chen T, Tawaratsumida K, High AA, Min J, Chen Y, Guy RK, Redecke V, Katzenellenbogen JA, Häcker H. Identification of Toll-like receptor signaling inhibitors based on selective activation of hierarchically acting signaling proteins. Sci Signal 2018; 11:11/543/eaaq1077. [PMID: 30108181 DOI: 10.1126/scisignal.aaq1077] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Toll-like receptors (TLRs) recognize various pathogen- and host tissue-derived molecules and initiate inflammatory immune responses. Exaggerated or prolonged TLR activation, however, can lead to etiologically diverse diseases, such as bacterial sepsis, metabolic and autoimmune diseases, or stroke. Despite the apparent medical need, no small-molecule drugs against TLR pathways are clinically available. This may be because of the complex signaling mechanisms of TLRs, which are governed by a series of protein-protein interactions initiated by Toll/interleukin-1 receptor homology domains (TIR) found in TLRs and the cytoplasmic adaptor proteins TIRAP and MyD88. Oligomerization of TLRs with MyD88 or TIRAP leads to the recruitment of members of the IRAK family of kinases and the E3 ubiquitin ligase TRAF6. We developed a phenotypic drug screening system based on the inducible homodimerization of either TIRAP, MyD88, or TRAF6, that ranked hits according to their hierarchy of action. From a bioactive compound library, we identified methyl-piperidino-pyrazole (MPP) as a TLR-specific inhibitor. Structure-activity relationship analysis, quantitative proteomics, protein-protein interaction assays, and cellular thermal shift assays suggested that MPP targets the TIR domain of MyD88. Chemical evolution of the original MPP scaffold generated compounds with selectivity for distinct TLRs that interfered with specific TIR interactions. Administration of an MPP analog to mice protected them from TLR4-dependent inflammation. These results validate this phenotypic screening approach and suggest that the MPP scaffold could serve as a starting point for the development of anti-inflammatory drugs.
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Affiliation(s)
- Sirish K Ippagunta
- Department of Infectious Diseases, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN 38105, USA
| | - Julie A Pollock
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Naina Sharma
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Wenwei Lin
- Department of Chemical Biology and Therapeutics, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Taosheng Chen
- Department of Chemical Biology and Therapeutics, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Kazuki Tawaratsumida
- Department of Infectious Diseases, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN 38105, USA
| | - Anthony A High
- St. Jude Proteomics Facility, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Jaeki Min
- Department of Chemical Biology and Therapeutics, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Yizhe Chen
- Department of Chemical Biology and Therapeutics, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - R Kiplin Guy
- Department of Chemical Biology and Therapeutics, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Vanessa Redecke
- Department of Infectious Diseases, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN 38105, USA
| | | | - Hans Häcker
- Department of Infectious Diseases, St. Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN 38105, USA.
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Numao S, Hasler F, Laguerre C, Srinivas H, Wack N, Jäger P, Schmid A, Osmont A, Röthlisberger P, Houguenade J, Bergsdorf C, Dawson J, Carte N, Hofmann A, Markert C, Hardaker L, Billich A, Wolf RM, Penno CA, Bollbuck B, Miltz W, Röhn TA. Feasibility and physiological relevance of designing highly potent aminopeptidase-sparing leukotriene A4 hydrolase inhibitors. Sci Rep 2017; 7:13591. [PMID: 29051536 PMCID: PMC5648829 DOI: 10.1038/s41598-017-13490-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 09/25/2017] [Indexed: 01/01/2023] Open
Abstract
Leukotriene A4 Hydrolase (LTA4H) is a bifunctional zinc metalloenzyme that comprises both epoxide hydrolase and aminopeptidase activity, exerted by two overlapping catalytic sites. The epoxide hydrolase function of the enzyme catalyzes the biosynthesis of the pro-inflammatory lipid mediator leukotriene (LT) B4. Recent literature suggests that the aminopeptidase function of LTA4H is responsible for degradation of the tripeptide Pro-Gly-Pro (PGP) for which neutrophil chemotactic activity has been postulated. It has been speculated that the design of epoxide hydrolase selective LTA4H inhibitors that spare the aminopeptidase pocket may therefore lead to more efficacious anti-inflammatory drugs. In this study, we conducted a high throughput screen (HTS) for LTA4H inhibitors and attempted to rationally design compounds that would spare the PGP degrading function. While we were able to identify compounds with preference for the epoxide hydrolase function, absolute selectivity was not achievable for highly potent compounds. In order to assess the relevance of designing such aminopeptidase-sparing LTA4H inhibitors, we studied the role of PGP in inducing inflammation in different settings in wild type and LTA4H deficient (LTA4H KO) animals but could not confirm its chemotactic potential. Attempting to design highly potent epoxide hydrolase selective LTA4H inhibitors, therefore seems to be neither feasible nor relevant.
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Affiliation(s)
- Shin Numao
- Chemical Biology & Therapeutics, Novartis Institutes for BioMedical Research, Novartis Pharma AG, Basel, Switzerland
| | - Franziska Hasler
- Autoimmunity, Transplantation and Inflammation, Novartis Institutes for BioMedical Research, Novartis Pharma AG, Basel, Switzerland
| | - Claire Laguerre
- Analytical Sciences & Imaging, Novartis Institutes for BioMedical Research, Novartis Pharma AG, Basel, Switzerland
| | - Honnappa Srinivas
- Chemical Biology & Therapeutics, Novartis Institutes for BioMedical Research, Novartis Pharma AG, Basel, Switzerland
| | - Nathalie Wack
- Autoimmunity, Transplantation and Inflammation, Novartis Institutes for BioMedical Research, Novartis Pharma AG, Basel, Switzerland
| | - Petra Jäger
- Autoimmunity, Transplantation and Inflammation, Novartis Institutes for BioMedical Research, Novartis Pharma AG, Basel, Switzerland
| | - Andres Schmid
- Chemical Biology & Therapeutics, Novartis Institutes for BioMedical Research, Novartis Pharma AG, Basel, Switzerland
| | - Arnaud Osmont
- Analytical Sciences & Imaging, Novartis Institutes for BioMedical Research, Novartis Pharma AG, Basel, Switzerland
| | - Patrik Röthlisberger
- Chemical Biology & Therapeutics, Novartis Institutes for BioMedical Research, Novartis Pharma AG, Basel, Switzerland
| | - Jeremy Houguenade
- Autoimmunity, Transplantation and Inflammation, Novartis Institutes for BioMedical Research, Novartis Pharma AG, Basel, Switzerland
| | - Christian Bergsdorf
- Chemical Biology & Therapeutics, Novartis Institutes for BioMedical Research, Novartis Pharma AG, Basel, Switzerland
| | - Janet Dawson
- Autoimmunity, Transplantation and Inflammation, Novartis Institutes for BioMedical Research, Novartis Pharma AG, Basel, Switzerland
| | - Nathalie Carte
- Analytical Sciences & Imaging, Novartis Institutes for BioMedical Research, Novartis Pharma AG, Basel, Switzerland
| | - Andreas Hofmann
- Analytical Sciences & Imaging, Novartis Institutes for BioMedical Research, Novartis Pharma AG, Basel, Switzerland
| | - Christian Markert
- Global Discovery Chemistry, Novartis Institutes for BioMedical Research, Novartis Pharma AG, Basel, Switzerland
| | - Liz Hardaker
- Respiratory Research, Novartis Institutes for BioMedical Research, Novartis Pharma AG, Basel, Switzerland
| | - Andreas Billich
- Autoimmunity, Transplantation and Inflammation, Novartis Institutes for BioMedical Research, Novartis Pharma AG, Basel, Switzerland
| | - Romain M Wolf
- Global Discovery Chemistry, Novartis Institutes for BioMedical Research, Novartis Pharma AG, Basel, Switzerland
| | - Carlos A Penno
- Analytical Sciences & Imaging, Novartis Institutes for BioMedical Research, Novartis Pharma AG, Basel, Switzerland
| | - Birgit Bollbuck
- Global Discovery Chemistry, Novartis Institutes for BioMedical Research, Novartis Pharma AG, Basel, Switzerland
| | - Wolfgang Miltz
- Global Discovery Chemistry, Novartis Institutes for BioMedical Research, Novartis Pharma AG, Basel, Switzerland
| | - Till A Röhn
- Autoimmunity, Transplantation and Inflammation, Novartis Institutes for BioMedical Research, Novartis Pharma AG, Basel, Switzerland.
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12
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The development of novel LTA 4H modulators to selectively target LTB 4 generation. Sci Rep 2017; 7:44449. [PMID: 28303931 PMCID: PMC5355877 DOI: 10.1038/srep44449] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Accepted: 02/08/2017] [Indexed: 12/14/2022] Open
Abstract
The pro-inflammatory mediator leukotriene B4 (LTB4) is implicated in the pathologies of an array of diseases and thus represents an attractive therapeutic target. The enzyme leukotriene A4 hydrolase (LTA4H) catalyses the distal step in LTB4 synthesis and hence inhibitors of this enzyme have been actively pursued. Despite potent LTA4H inhibitors entering clinical trials all have failed to show efficacy. We recently identified a secondary anti-inflammatory role for LTA4H in degrading the neutrophil chemoattractant Pro-Gly-Pro (PGP) and rationalized that the failure of conventional LTA4H inhibitors may be that they inadvertently prevented PGP degradation. We demonstrate that these inhibitors do indeed fail to discriminate between the dual activities of LTA4H, and enable PGP accumulation in mice. Accordingly, we have developed novel compounds that potently inhibit LTB4 generation whilst leaving PGP degradation unperturbed. These novel compounds could represent a safer and superior class of LTA4H inhibitors for translation into the clinic.
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13
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3D-SDAR modeling of hERG potassium channel affinity: A case study in model design and toxicophore identification. J Mol Graph Model 2017; 72:246-255. [PMID: 28129595 DOI: 10.1016/j.jmgm.2017.01.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 11/30/2016] [Accepted: 01/07/2017] [Indexed: 11/22/2022]
Abstract
A dataset of 237 human Ether-à-go-go Related Gene (hERG) potassium channel inhibitors (180 of which were used for model building and validation, whereas 57 constituted the "true" external prediction set) collected from 22 literature sources was modeled by 3D-SDAR. To produce reliable and reproducible classification models for hERG blocking, the initial set of 180 chemicals was split into two subsets: a balanced modeling set consisting of 118 compounds and an unbalanced validation set comprised of 62 compounds. A PLS bagging-like algorithm written in Matlab was used to process the data and assign each compound to one of the two (hERG+ or hERG-) activity classes. The best predictive model evaluated on the basis of a fully randomized hold-out test set (comprising 20% of the modeling set) used 4 latent variables and a grid of 6ppm×6ppm×1Å in the C-C region, 6ppm×30ppm×1Å in the C-N region, and 30ppm×30ppm×1Å in the N-N region. An overall accuracy of 0.84 was obtained for both the hold-out test set and the validation set. Further, an external prediction set consisting of 57 drugs and drug derivatives was used to estimate the true predictive power of the reported 3D-SDAR model - a slight reduction of the overall accuracy down to 0.77 was observed. 3D-SDAR map of the most frequently occurring bins and their projection on the standard coordinate space of the chemical structures allowed identification of a three-center toxicophore composed of two aromatic rings and an amino group. A U test along the distance axis of the most frequently occurring 3D-SDAR bins was used to set the distance limits of the toxicophore. This toxicophore was found to be similar to an earlier reported phospholipidosis (PLD) toxicophore.
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14
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Patil N, Cordella D, Aqil A, Debuigne A, Admassie S, Jérôme C, Detrembleur C. Surface- and Redox-Active Multifunctional Polyphenol-Derived Poly(ionic liquid)s: Controlled Synthesis and Characterization. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01857] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Nagaraj Patil
- Centre for Education
and Research on Macromolecules (CERM), CESAM Research Unit, Department
of Chemistry, University of Liege, Allée de la Chimie B6A, 4000 Liège, Belgium
| | - Daniela Cordella
- Centre for Education
and Research on Macromolecules (CERM), CESAM Research Unit, Department
of Chemistry, University of Liege, Allée de la Chimie B6A, 4000 Liège, Belgium
| | - Abdelhafid Aqil
- Centre for Education
and Research on Macromolecules (CERM), CESAM Research Unit, Department
of Chemistry, University of Liege, Allée de la Chimie B6A, 4000 Liège, Belgium
| | - Antoine Debuigne
- Centre for Education
and Research on Macromolecules (CERM), CESAM Research Unit, Department
of Chemistry, University of Liege, Allée de la Chimie B6A, 4000 Liège, Belgium
| | - Shimelis Admassie
- Biomolecular and organic electronics, IFM, Linköping University, S-581 83 Linköping, Sweden
- Department of Chemistry, Addis Ababa University, PO Box 1176, Addis Ababa, Ethiopia
| | - Christine Jérôme
- Centre for Education
and Research on Macromolecules (CERM), CESAM Research Unit, Department
of Chemistry, University of Liege, Allée de la Chimie B6A, 4000 Liège, Belgium
| | - Christophe Detrembleur
- Centre for Education
and Research on Macromolecules (CERM), CESAM Research Unit, Department
of Chemistry, University of Liege, Allée de la Chimie B6A, 4000 Liège, Belgium
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15
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Arisawa M, Tanii S, Tazawa T, Yamaguchi M. Rhodium-catalyzed transformation of heteroaryl aryl ethers into heteroaryl fluorides. Chem Commun (Camb) 2016; 52:11390-11393. [PMID: 27709178 DOI: 10.1039/c6cc05400e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A rhodium complex catalyzed the conversion of the C-O bond of heteroaryl aryl ethers to the C-F bond. The reaction of (4-chlorophenylthio)pentafluorobenzene with heteroaryl aryl ethers provided heteroaryl fluorides and heteroaryl (4-chlorophenylthio)tetrafluorophenyl ethers; this involved the cleavage of a single heteroaryl C-O bond under equilibrium conditions. The reaction of heteroaryl aryl ethers with 2-fluorobenzothiazole in which two heteroaryl and aryl C-O bonds were cleaved provided heteroaryl fluorides and aryl fluorides. The reactions were applicable to five-membered and six-membered heteroaryl aryl ethers and also to diaryl ethers possessing one or two electron-withdrawing groups.
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Affiliation(s)
- Mieko Arisawa
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai, 980-8578, Japan.
| | - Saori Tanii
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai, 980-8578, Japan.
| | - Takeru Tazawa
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai, 980-8578, Japan.
| | - Masahiko Yamaguchi
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai, 980-8578, Japan.
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16
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Ge X, Feng Z, Xu T, Wu B, Chen H, Xu F, Fu L, Shan X, Dai Y, Zhang Y, Liang G. A novel imidazopyridine derivative, X22, attenuates sepsis-induced lung and liver injury by inhibiting the inflammatory response in vitro and in vivo. Drug Des Devel Ther 2016; 10:1947-59. [PMID: 27390516 PMCID: PMC4930233 DOI: 10.2147/dddt.s101449] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Sepsis remains a leading cause of death worldwide. Despite years of extensive research, effective drugs to treat sepsis in the clinic are lacking. In this study, we found a novel imidazopyridine derivative, X22, which has powerful anti-inflammatory activity. X22 dose-dependently inhibited lipopolysaccharide (LPS)-induced proinflammatory cytokine production in mouse primary peritoneal macrophages and RAW 264.7 macrophages. X22 also downregulated the LPS-induced proinflammatory gene expression in vitro. In vivo, X22 exhibited a significant protection against LPS-induced death. Pretreatment or treatment with X22 attenuated the sepsis-induced lung and liver injury by inhibiting the inflammatory response. In addition, X22 showed protection against LPS-induced acute lung injury. We additionally found that pretreatment with X22 reduced the inflammatory pain in the acetic acid and formalin models and reduced the dimethylbenzene-induced ear swelling and acetic acid-increased vascular permeability. Together, these data confirmed that X22 has multiple anti-inflammatory effects and may be a potential therapeutic option in the treatment of inflammatory diseases.
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Affiliation(s)
- Xiangting Ge
- Chemical Biology Research Center, School of Pharmaceutical Sciences
- Department of Pulmonary Medicine, The 2nd Affiliated Hospital
| | - Zhiguo Feng
- Chemical Biology Research Center, School of Pharmaceutical Sciences
| | - Tingting Xu
- Department of Pulmonary Medicine, The 2nd Affiliated Hospital
| | - Beibei Wu
- Department of Pediatrics, The 2nd Affiliated Hospital, Wenzhou Medical University, Wenzhou, People’s Republic of China
| | - Hongjin Chen
- Chemical Biology Research Center, School of Pharmaceutical Sciences
| | - Fengli Xu
- Department of Pediatrics, The 2nd Affiliated Hospital, Wenzhou Medical University, Wenzhou, People’s Republic of China
| | - Lili Fu
- Chemical Biology Research Center, School of Pharmaceutical Sciences
| | - Xiaoou Shan
- Department of Pediatrics, The 2nd Affiliated Hospital, Wenzhou Medical University, Wenzhou, People’s Republic of China
| | - Yuanrong Dai
- Department of Pulmonary Medicine, The 2nd Affiliated Hospital
| | - Yali Zhang
- Chemical Biology Research Center, School of Pharmaceutical Sciences
| | - Guang Liang
- Chemical Biology Research Center, School of Pharmaceutical Sciences
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17
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Qian Y, Zhang Y, Zhong P, Peng K, Xu Z, Chen X, Lu K, Chen G, Li X, Liang G. Inhibition of inflammation and oxidative stress by an imidazopyridine derivative X22 prevents heart injury from obesity. J Cell Mol Med 2016; 20:1427-42. [PMID: 27019072 PMCID: PMC4956940 DOI: 10.1111/jcmm.12832] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Accepted: 02/10/2016] [Indexed: 12/21/2022] Open
Abstract
Inflammation and oxidative stress plays an important role in the development of obesity‐related complications and cardiovascular disease. Benzimidazole and imidazopyridine compounds are a class of compounds with a variety of activities, including anti‐inflammatory, antioxidant and anti‐cancer. X22 is an imidazopyridine derivative we synthesized and evaluated previously for anti‐inflammatory activity in lipopolysaccharide‐stimulated macrophages. However, its ability to alleviate obesity‐induced heart injury via its anti‐inflammatory actions was unclear. This study was designed to evaluate the cardioprotective effects of X22 using cell culture studies and a high‐fat diet rat model. We observed that palmitic acid treatment in cardiac‐derived H9c2 cells induced a significant increase in reactive oxygen species, inflammation, apoptosis, fibrosis and hypertrophy. All of these changes were inhibited by treatment with X22. Furthermore, oral administration of X22 suppressed high‐fat diet‐induced oxidative stress, inflammation, apoptosis, hypertrophy and fibrosis in rat heart tissues and decreased serum lipid concentration. We also found that the anti‐inflammatory and anti‐oxidative actions of X22 were associated with Nrf2 activation and nuclear factor‐kappaB (NF‐κB) inhibition, respectively, both in vitro and in vivo. The results of this study indicate that X22 may be a promising cardioprotective agent and that Nrf2 and NF‐κB may be important therapeutic targets for obesity‐related complications.
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Affiliation(s)
- Yuanyuan Qian
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Yali Zhang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Peng Zhong
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China.,Department of Cardiology, The 5th Affiliated Hospital of Wenzhou Medical University, Lishui, Zhejiang, China
| | - Kesong Peng
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Zheng Xu
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Xuemei Chen
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Kongqin Lu
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Gaozhi Chen
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Xiaokun Li
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Guang Liang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
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18
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Appiah-Kubi P, Soliman ME. Dual anti-inflammatory and selective inhibition mechanism of leukotriene A4 hydrolase/aminopeptidase: insights from comparative molecular dynamics and binding free energy analyses. J Biomol Struct Dyn 2016; 34:2418-33. [DOI: 10.1080/07391102.2015.1117991] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Patrick Appiah-Kubi
- Molecular Modelling and Drug Design Research Group, School of Health Sciences, University of KwaZulu-Natal, Westville, Durban 4001, South Africa
| | - Mahmoud E.S. Soliman
- Molecular Modelling and Drug Design Research Group, School of Health Sciences, University of KwaZulu-Natal, Westville, Durban 4001, South Africa
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19
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Nikpassand M, Fekri LZ, Farokhian P. An efficient and green synthesis of novel benzoxazole under ultrasound irradiation. ULTRASONICS SONOCHEMISTRY 2016; 28:341-345. [PMID: 26384917 DOI: 10.1016/j.ultsonch.2015.08.014] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Revised: 08/01/2015] [Accepted: 08/22/2015] [Indexed: 06/05/2023]
Abstract
Ultrasound as green process and an alternative energy source was investigated for the environmentally benign synthesis of novel benzoxazoles from different azo-linked salicylic acid derivatives and 2-amino-4-chlorophenol in short reaction time and high yield. These benzoxazole compounds have been characterized by elemental analysis, FT-IR, (1)H NMR and (13)C NMR spectroscopy.
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Affiliation(s)
| | - Leila Zare Fekri
- Department of Chemistry, Payame Noor University, PO Box 19395-3697, Tehran, Iran
| | - Pegah Farokhian
- Department of Chemistry, Rasht Branch, Islamic Azad University, Rasht, Iran
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20
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Design and synthesis of 1-glycosyl-4-{N-[(2′-morpholinethoxy)- phenyl]aminomethyl}-1H-1,2,3-triazoles as calcium activators. Chem Res Chin Univ 2015. [DOI: 10.1007/s40242-015-5134-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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21
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Abstract
A concise and expeditious approach to the total synthesis of broussonone A, a p-quinol natural compound, has been developed. The key features of the synthesis include the Grubbs II catalyst mediated cross metathesis of two aromatic subunits, and a chemoselective oxidative dearomatizationin the presence of two phenol moieties. Especially, optimization associated with the CM reaction of ortho-alkoxystyrenes was also studied, which are known to be ineffective for Ru-catalyzed metathesis reactions under conventional reaction conditions because ortho-alkoxy group could coordinate to the ruthenium center, resulting in the potential complication of catalyst inhibition.
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22
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Bian Y, Ren L, Wang L, Xu S, Tao J, Zhang X, Huang Y, Qian Y, Zhang X, Song Z, Wu W, Wang Y, Liang G. A novel imidazopyridine derivative, X22, prevents the retinal ischemia-reperfusion injury via inhibition of MAPKs. Exp Eye Res 2015; 135:26-36. [DOI: 10.1016/j.exer.2015.04.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2014] [Revised: 04/13/2015] [Accepted: 04/17/2015] [Indexed: 10/23/2022]
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23
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Kozielewicz P, Paradowska K, Erić S, Wawer I, Zloh M. Insights into mechanism of anticancer activity of pentacyclic oxindole alkaloids of Uncaria tomentosa by means of a computational reverse virtual screening and molecular docking approach. MONATSHEFTE FUR CHEMIE 2014. [DOI: 10.1007/s00706-014-1212-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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24
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Nam SO, Park DH, Lee YH, Ryu JH, Lee YS. Synthesis of aminoalkyl-substituted coumarin derivatives as acetylcholinesterase inhibitors. Bioorg Med Chem 2014; 22:1262-7. [DOI: 10.1016/j.bmc.2014.01.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2013] [Revised: 01/04/2014] [Accepted: 01/06/2014] [Indexed: 01/28/2023]
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25
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Suresh D, Dhakshinamoorthy A, Pitchumani K. A green route for the synthesis of 2-substituted benzoxazole derivatives catalyzed by Al3+-exchanged K10 clay. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.09.039] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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26
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Chen G, Liu Z, Zhang Y, Shan X, Jiang L, Zhao Y, He W, Feng Z, Yang S, Liang G. Synthesis and Anti-inflammatory Evaluation of Novel Benzimidazole and Imidazopyridine Derivatives. ACS Med Chem Lett 2013; 4:69-74. [PMID: 24900565 DOI: 10.1021/ml300282t] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2012] [Accepted: 11/21/2012] [Indexed: 01/17/2023] Open
Abstract
Sepsis, an acute inflammatory disease, remains the most common cause of death in intensive care units. A series of benzimidazole and imidazopyridine derivatives were synthesized and screened for anti-inflammatory activities, and the imidazopyridine series showed excellent inhibition of the expression of inflammatory cytokines in LPS-stimulated macrophages. Compounds X10, X12, X13, X14, and X15 inhibited TNF-α and IL-6 release in a dose-dependent manner, and X12 showed no cytotoxicity in hepatic cells. Furthermore, X12 exhibited a significant protection against LPS-induced septic death in mouse models. Together, these data present a series of new imidazopyridines with potential therapeutic effects in acute inflammatory diseases.
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Affiliation(s)
- Gaozhi Chen
- School of Pharmacy, Wenzhou Medical College, 1210 University Town, Wenzhou, Zhejiang 325035,
China
| | - Zhiguo Liu
- School of Pharmacy, Wenzhou Medical College, 1210 University Town, Wenzhou, Zhejiang 325035,
China
| | - Yali Zhang
- School of Environmental
and Biological Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei St., Nanjing, Jiangsu
210094, China
| | - Xiaoou Shan
- Department
of Pediatrics, The Second Affiliated Hospital, Wenzhou Medical College, Wenzhou, Zhejiang 325035, China
| | - Lili Jiang
- Department
of Pediatrics, The Second Affiliated Hospital, Wenzhou Medical College, Wenzhou, Zhejiang 325035, China
| | - Yunjie Zhao
- School of Pharmacy, Wenzhou Medical College, 1210 University Town, Wenzhou, Zhejiang 325035,
China
| | - Wenfei He
- School of Pharmacy, Wenzhou Medical College, 1210 University Town, Wenzhou, Zhejiang 325035,
China
| | - Zhiguo Feng
- School of Pharmacy, Wenzhou Medical College, 1210 University Town, Wenzhou, Zhejiang 325035,
China
| | - Shulin Yang
- School of Environmental
and Biological Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei St., Nanjing, Jiangsu
210094, China
| | - Guang Liang
- School of Pharmacy, Wenzhou Medical College, 1210 University Town, Wenzhou, Zhejiang 325035,
China
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27
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Mendes MT, Silveira PF. Leukotriene-A4-Hydrolase and Basic Aminopeptidase Activities Are Related with Collagen-Induced Arthritis in a Compartment-Dependent Manner. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/ojra.2013.34040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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28
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Development of predictive quantitative structure–activity relationship model and its application in the discovery of human leukotriene A4 hydrolase inhibitors. Future Med Chem 2013; 5:27-40. [DOI: 10.4155/fmc.12.184] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Background: Human LTA4H catalyzes the conversion of LTA4 to LTB4 and plays a key role in innate immune responses. Inhibition of this enzyme can be a valid method in the treatment of inflammatory response exhibited through LTB4. Results & discussion: The quantitative structure–activity relationship (QSAR) models were developed using genetic function approximation and validated. A training set of 26 diverse compounds and their molecular descriptors were used to develop highly correlating QSAR models. A six-descriptor model explaining the biological activity of the training and test sets with correlation values of 0.846 and 0.502, respectively, was selected as the best model and used in a database screening of drug-like Maybridge database followed by molecular docking. Conclusion: Based on the predicted potent inhibitory activities, expected binding mode and molecular interactions at the active site of hLTA4H final leads were selected as to be utilized in designing future hLTA4H inhibitors.
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29
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Identification of benzofuran central cores for the inhibition of leukotriene A(4) hydrolase. Bioorg Med Chem Lett 2012; 23:811-5. [PMID: 23260350 DOI: 10.1016/j.bmcl.2012.11.074] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2012] [Revised: 11/15/2012] [Accepted: 11/20/2012] [Indexed: 11/22/2022]
Abstract
Leukotrienes (LT's) are known to play a physiological role in inflammatory immune response. Leukotriene A(4) hydrolase (LTA(4)H) is a cystolic enzyme that stereospecifically catalyzes the transformation of LTA(4) to LTB(4). LTB(4) is a known pro-inflammatory mediator. This paper describes the identification and synthesis of substituted benzofurans as LTH(4)H inhibitors. The benzofuran series demonstrated reduced mouse and human whole blood LTB(4) levels in vitro and led to the identification one analog for advanced profiling. Benzofuran 28 showed dose responsive target engagement and provides a useful tool to explore a LTA(4)H inhibitor for the treatment of inflammatory diseases, such as asthma and inflammatory bowel disease (IBD).
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30
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Tanis VM, Bacani GM, Blevitt JM, Chrovian CC, Crawford S, De Leon A, Fourie AM, Gomez L, Grice CA, Herman K, Kearney AM, Landry-Bayle AM, Lee-Dutra A, Nelson J, Riley JP, Santillán A, Wiener JJ, Xue X, Young AL. Azabenzthiazole inhibitors of leukotriene A4 hydrolase. Bioorg Med Chem Lett 2012; 22:7504-11. [DOI: 10.1016/j.bmcl.2012.10.036] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Revised: 10/01/2012] [Accepted: 10/08/2012] [Indexed: 11/16/2022]
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31
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Çalışkan B, Banoglu E. Overview of recent drug discovery approaches for new generation leukotriene A4 hydrolase inhibitors. Expert Opin Drug Discov 2012; 8:49-63. [DOI: 10.1517/17460441.2013.735228] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Burcu Çalışkan
- Gazi University, Faculty of Pharmacy, Department of Pharmaceutical Chemistry,
Taç Sok. No:3 Yenimahalle, 06330 Ankara, Turkey
| | - Erden Banoglu
- Gazi University, Faculty of Pharmacy, Department of Pharmaceutical Chemistry,
Taç Sok. No:3 Yenimahalle, 06330 Ankara, Turkey ; ;
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32
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GRICE CHERYLA, FOURIE ANNEM, LEE-DUTRA ALICE. Leukotriene A4 Hydrolase: Biology, Inhibitors and Clinical Applications. ANTI-INFLAMMATORY DRUG DISCOVERY 2012. [DOI: 10.1039/9781849735346-00058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Leukotriene A4 hydrolase is a zinc-containing cytosolic enzyme with both hydrolase and aminopeptidase activity. LTA4H stereospecifically catalyzes the transformation of the unstable epoxide LTA4 to the potent pro-inflammatory mediator LTB4. Variations in the lta4h gene have been linked to susceptibility to multiple diseases including myocardial infarction, stroke and asthma. Pre-clinical animal models and human biomarker data have implicated LTB4 in inflammatory diseases. Several groups have now identified selective inhibitors of LTA4H, many of which were influenced by the disclosure of a protein crystal structure a decade ago. Clinical validation of LTA4H remains elusive despite the progression of inhibitors into pre-clinical and clinical development.
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Affiliation(s)
- CHERYL A. GRICE
- Johnson & Johnson Pharmaceutical Research & Development, 3210 Merryfield Row, San Diego California 92121 USA
| | - ANNE M. FOURIE
- Johnson & Johnson Pharmaceutical Research & Development, 3210 Merryfield Row, San Diego California 92121 USA
| | - ALICE LEE-DUTRA
- Johnson & Johnson Pharmaceutical Research & Development, 3210 Merryfield Row, San Diego California 92121 USA
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33
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Thangapandian S, John S, Arooj M, Lee KW. Molecular dynamics simulation study and hybrid pharmacophore model development in human LTA4H inhibitor design. PLoS One 2012; 7:e34593. [PMID: 22496831 PMCID: PMC3320645 DOI: 10.1371/journal.pone.0034593] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Accepted: 03/02/2012] [Indexed: 01/19/2023] Open
Abstract
Human leukotriene A4 hydrolase (hLTA4H) is a bi-functional enzyme catalyzes the hydrolase and aminopeptidase functions upon the fatty acid and peptide substrates, respectively, utilizing the same but overlapping binding site. Particularly the hydrolase function of this enzyme catalyzes the rate-limiting step of the leukotriene (LT) cascade that converts the LTA4 to LTB4. This product is a potent pro-inflammatory activator of inflammatory responses and thus blocking this conversion provides a valuable means to design anti-inflammatory agents. Four structurally very similar chemical compounds with highly different inhibitory profile towards the hydrolase function of hLTA4H were selected from the literature. Molecular dynamics (MD) simulations of the complexes of hLTA4H with these inhibitors were performed and the results have provided valuable information explaining the reasons for the differences in their biological activities. Binding mode analysis revealed that the additional thiophene moiety of most active inhibitor helps the pyrrolidine moiety to interact the most important R563 and K565 residues. The hLTA4H complexes with the most active compound and substrate were utilized in the development of hybrid pharmacophore models. These developed pharmacophore models were used in screening chemical databases in order to identify lead candidates to design potent hLTA4H inhibitors. Final evaluation based on molecular docking and electronic parameters has identified three compounds of diverse chemical scaffolds as potential leads to be used in novel and potent hLTA4H inhibitor design.
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Affiliation(s)
| | | | | | - Keun Woo Lee
- Division of Applied Life Science (BK21 Program), Systems and Synthetic Agrobiotech Center (SSAC), Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Research Institute of Natural Science (RINS), Gyeongsang National University (GNU), Jinju, Republic of Korea
- * E-mail:
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34
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Ranjit S, Lee R, Heryadi D, Shen C, Wu J, Zhang P, Huang KW, Liu X. Copper-Mediated C–H Activation/C–S Cross-Coupling of Heterocycles with Thiols. J Org Chem 2011; 76:8999-9007. [DOI: 10.1021/jo2017444] [Citation(s) in RCA: 211] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Sadananda Ranjit
- Department of Chemistry, National University of Singapore, Singapore
117543
| | - Richmond Lee
- KAUST
Catalysis Center and Division
of Chemical and Life Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900,
Kingdom of Saudi Arabia
| | - Dodi Heryadi
- KAUST
Catalysis Center and Division
of Chemical and Life Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900,
Kingdom of Saudi Arabia
| | - Chao Shen
- College of Material, Chemistry
and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Ji’En Wu
- Department of Chemistry, National University of Singapore, Singapore
117543
| | - Pengfei Zhang
- College of Material, Chemistry
and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, China
| | - Kuo-Wei Huang
- KAUST
Catalysis Center and Division
of Chemical and Life Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900,
Kingdom of Saudi Arabia
| | - Xiaogang Liu
- Department of Chemistry, National University of Singapore, Singapore
117543
- Institute of Materials
Research
and Engineering, A*STAR, 3 Research Link,
Singapore 117602
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De Oliveira EO, Wang K, Kong HS, Kim S, Miessau M, Snelgrove RJ, Shim YM, Paige M. Effect of the leukotriene A4 hydrolase aminopeptidase augmentor 4-methoxydiphenylmethane in a pre-clinical model of pulmonary emphysema. Bioorg Med Chem Lett 2011; 21:6746-50. [PMID: 21983441 DOI: 10.1016/j.bmcl.2011.09.048] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Revised: 09/12/2011] [Accepted: 09/14/2011] [Indexed: 01/27/2023]
Abstract
The leukotriene A(4) hydrolase enzyme is a dual functioning enzyme with the following two catalytic activities: an epoxide hydrolase function that transforms the lipid metabolite leukotriene A(4) to leukotriene B(4) and an aminopeptidase function that hydrolyzes short peptides. To date, all drug discovery efforts have focused on the epoxide hydrolase activity of the enzyme, because of extensive biological characterization of the pro-inflammatory properties of its metabolite, leukotriene B(4). Herein, we have designed a small molecule, 4-methoxydiphenylmethane, as a pharmacological agent that is bioavailable and augments the aminopeptidase activity of the leukotriene A(4) hydrolase enzyme. Pre-clinical evaluation of our drug showed protection against intranasal elastase-induced pulmonary emphysema in murine models.
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Affiliation(s)
- Eliseu O De Oliveira
- Georgetown University Medical Center, Lombardi Comprehensive Cancer Center, Washington, DC 20057, USA
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Markt P, Schuster D, Langer T. Pharmacophore Models for Virtual Screening. METHODS AND PRINCIPLES IN MEDICINAL CHEMISTRY 2011. [DOI: 10.1002/9783527633326.ch5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Thangapandian S, John S, Sakkiah S, Lee KW. Pharmacophore-based virtual screening and Bayesian model for the identification of potential human leukotriene A4 hydrolase inhibitors. Eur J Med Chem 2011; 46:1593-603. [DOI: 10.1016/j.ejmech.2011.02.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2010] [Revised: 01/31/2011] [Accepted: 02/03/2011] [Indexed: 10/18/2022]
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Ye SQ, Zhao ZH, Xia Y, Chen HQ. Administration of Lactobacillus plantarum reduces TNBS-induced colitis in mice. Shijie Huaren Xiaohua Zazhi 2011; 19:794-799. [DOI: 10.11569/wcjd.v19.i8.794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To determine the effect of administration of Lactobacillus plantarum (LP) on established colitis in mice and to explore possible mechanisms involved.
METHODS: A model of colitis was induced by intracolonic injection of 2,4,6-trinitrobenzene sulfonic acid sodium salt (TNBS) in adult Balb/c mice. The mice were then treated with LP (109 CFU) or vehicle for three weeks. After treatment, all mice were killed and colonic damage was evaluated both histologically and biochemically, including determination of the activity of myeloperoxidase (MPO) activity, and the levels of leukotriene B4 (LTB4), tumor necrosis factor α (TNF-α) and interferon-γ (IFN-γ) in colon tissue.
RESULTS: LP therapy resulted in amelioration of colitis induced with TNBS in mice when compared with control mice without undergoing LP treatment. This anti-inflammatory effect of LP was evidenced by a significant reduction of macroscopic and microscopic colonic damage scores (1.11 ± 0. 61 vs 4.62 ± 0. 40, P < 0.05; 1.48 ± 0.40 vs 5.39 ± 1.12, P < 0.05). Moreover, a reduction of neutrophil infiltrate in LP-treated mice was confirmed biochemically by a significant reduction of the activity of colonic MPO (25.14 U/g ± 5.22 U/g vs 90.3 U/g ± 7.70 U/g, P < 0.05), a marker of neutrophil infiltration, in comparison with non-treated colitic mice. In addition, treatment with LP resulted in a lower colonic content of LTB4 and in a significant reduction of proinflammatory factors, such as TNF-α and IFN-γ, when compared with control mice (3.13 ng/g ± 0.10 ng/g vs 8.43 ng/g ± 0. 49 ng/g, P < 0.05; 205 ng/g ± 68 ng/g vs 375 ng/g ± 79 ng/g, P < 0.05; 446 ng/g ± 116 ng/g vs 603 ng/g ± 109 ng/g, P < 0.05).
CONCLUSION: Administration of LP is effective in accelerating the recovery of experimental colitis in mice possibly by reducing leukocyte accumulation and proinflammatory cytokine expression.
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Sandanayaka V, Mamat B, Mishra RK, Winger J, Krohn M, Zhou LM, Keyvan M, Enache L, Sullins D, Onua E, Zhang J, Halldorsdottir G, Sigthorsdottir H, Thorlaksdottir A, Sigthorsson G, Thorsteinnsdottir M, Davies DR, Stewart LJ, Zembower DE, Andresson T, Kiselyov AS, Singh J, Gurney ME. Discovery of 4-[(2S)-2-{[4-(4-chlorophenoxy)phenoxy]methyl}-1-pyrrolidinyl]butanoic acid (DG-051) as a novel leukotriene A4 hydrolase inhibitor of leukotriene B4 biosynthesis. J Med Chem 2010; 53:573-85. [PMID: 19950900 DOI: 10.1021/jm900838g] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Both in-house human genetic and literature data have converged on the identification of leukotriene 4 hydrolase (LTA(4)H) as a key target for the treatment of cardiovascular disease. We combined fragment-based crystallography screening with an iterative medicinal chemistry effort to optimize inhibitors of LTA(4)H. Ligand efficiency was followed throughout our structure-activity studies. As applied within the context of LTA(4)H inhibitor design, the chemistry team was able to design a potent compound 20 (DG-051) (K(d) = 26 nM) with high aqueous solubility (>30 mg/mL) and high oral bioavailability (>80% across species) that is currently undergoing clinical evaluation for the treatment of myocardial infarction and stroke. The structural biology-chemistry interaction described in this paper provides a sound alternative to conventional screening techniques. This is the first example of a gene-to-clinic paradigm enabled by a fragment-based drug discovery effort.
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Affiliation(s)
- Vincent Sandanayaka
- Medicinal Chemistry, deCODE Chemistry, Inc., 2501 Davey Road, Woodridge, Illinois 60517, USA
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Murru S, Mondal P, Yella R, Patel BK. Copper(I)-Catalyzed Cascade Synthesis of 2-Substituted 1,3-Benzothiazoles: Direct Access to Benzothiazolones. European J Org Chem 2009. [DOI: 10.1002/ejoc.200900711] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Davies DR, Mamat B, Magnusson OT, Christensen J, Haraldsson MH, Mishra R, Pease B, Hansen E, Singh J, Zembower D, Kim H, Kiselyov AS, Burgin AB, Gurney ME, Stewart LJ. Discovery of leukotriene A4 hydrolase inhibitors using metabolomics biased fragment crystallography. J Med Chem 2009; 52:4694-715. [PMID: 19618939 PMCID: PMC2722745 DOI: 10.1021/jm900259h] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
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We describe a novel fragment library termed fragments of life (FOL) for structure-based drug discovery. The FOL library includes natural small molecules of life, derivatives thereof, and biaryl protein architecture mimetics. The choice of fragments facilitates the interrogation of protein active sites, allosteric binding sites, and protein−protein interaction surfaces for fragment binding. We screened the FOL library against leukotriene A4 hydrolase (LTA4H) by X-ray crystallography. A diverse set of fragments including derivatives of resveratrol, nicotinamide, and indole were identified as efficient ligands for LTA4H. These fragments were elaborated in a small number of synthetic cycles into potent inhibitors of LTA4H representing multiple novel chemotypes for modulating leukotriene biosynthesis. Analysis of the fragment-bound structures also showed that the fragments comprehensively recapitulated key chemical features and binding modes of several reported LTA4H inhibitors.
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Affiliation(s)
- Douglas R Davies
- deCODE biostructures, Inc., 7869 NE Day Road West, Bainbridge Island, Washington 98110, USA
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