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  1. Artikel ; Online: In Silico Identification and Evaluation of Natural Products as Potential Tumor Necrosis Factor Function Inhibitors Using Advanced Enalos Asclepios KNIME Nodes.

    Papadopoulou, Dimitra / Drakopoulos, Antonios / Lagarias, Panagiotis / Melagraki, Georgia / Kollias, George / Afantitis, Antreas

    International journal of molecular sciences

    2021  Band 22, Heft 19

    Abstract: Tumor necrosis factor (TNF) is a regulator of several chronic inflammatory diseases, such as rheumatoid arthritis. Although anti-TNF biologics have been used in clinic, they render several drawbacks, such as patients' progressive immunodeficiency and ... ...

    Abstract Tumor necrosis factor (TNF) is a regulator of several chronic inflammatory diseases, such as rheumatoid arthritis. Although anti-TNF biologics have been used in clinic, they render several drawbacks, such as patients' progressive immunodeficiency and loss of response, high cost, and intravenous administration. In order to find new potential anti-TNF small molecule inhibitors, we employed an in silico approach, aiming to find natural products, analogs of Ampelopsin H, a compound that blocks the formation of TNF active trimer. Two out of nine commercially available compounds tested, Nepalensinol B and Miyabenol A, efficiently reduced TNF-induced cytotoxicity in L929 cells and production of chemokines in mice joints' synovial fibroblasts, while Nepalensinol B also abolished TNF-TNFR1 binding in non-toxic concentrations. The binding mode of the compounds was further investigated by molecular dynamics and free energy calculation studies, using and advancing the Enalos Asclepios pipeline. Conclusively, we propose that Nepalensinol B, characterized by the lowest free energy of binding and by a higher number of hydrogen bonds with TNF, qualifies as a potential lead compound for TNF inhibitors' drug development. Finally, the upgraded Enalos Asclepios pipeline can be used for improved identification of new therapeutics against TNF-mediated chronic inflammatory diseases, providing state-of-the-art insight on their binding mode.
    Mesh-Begriff(e) Animals ; Anti-Inflammatory Agents/chemistry ; Anti-Inflammatory Agents/pharmacology ; Binding Sites/drug effects ; Biological Products/chemistry ; Biological Products/pharmacology ; Cell Line ; Cell Survival/drug effects ; Computer Simulation ; Drug Design ; Drug Discovery/methods ; Fibroblasts/drug effects ; Mice ; Primary Cell Culture ; Synovial Fluid/drug effects ; Tumor Necrosis Factor Inhibitors/chemistry ; Tumor Necrosis Factor Inhibitors/pharmacology ; Tumor Necrosis Factor-alpha/toxicity
    Chemische Substanzen Anti-Inflammatory Agents ; Biological Products ; Tumor Necrosis Factor Inhibitors ; Tumor Necrosis Factor-alpha
    Sprache Englisch
    Erscheinungsdatum 2021-09-23
    Erscheinungsland Switzerland
    Dokumenttyp Journal Article
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms221910220
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  2. Artikel ; Online: Correction to Insights to the Binding of a Selective Adenosine A

    Lagarias, Panagiotis / Barkan, Kerry / Tzortzini, Eva / Stampelou, Margarita / Vrontaki, Eleni / Ladds, Graham / Kolocouris, Antonios

    Journal of chemical information and modeling

    2020  Band 60, Heft 4, Seite(n) 2405–2406

    Sprache Englisch
    Erscheinungsdatum 2020-03-25
    Erscheinungsland United States
    Dokumenttyp Published Erratum
    ZDB-ID 190019-5
    ISSN 1549-960X ; 0095-2338
    ISSN (online) 1549-960X
    ISSN 0095-2338
    DOI 10.1021/acs.jcim.0c00240
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  3. Artikel ; Online: "Hit" to lead optimization and chemoinformatic studies for a new series of Autotaxin inhibitors.

    Stylianaki, Elli-Anna / Magkrioti, Christiana / Ladopoulou, Eleni M / Papavasileiou, Konstantinos D / Lagarias, Panagiotis / Melagraki, Georgia / Samiotaki, Martina / Panayotou, George / Dedos, Skarlatos G / Afantitis, Antreas / Aidinis, Vassilis / Matralis, Alexios N

    European journal of medicinal chemistry

    2023  Band 249, Seite(n) 115130

    Abstract: Robust experimental evidence has highlighted the role of Autotaxin (ATX)/Lysophosphatidic acid (LPA) axis not only in the pathogenesis of chronic inflammatory conditions and especially in fibroproliferative diseases but also in several types of cancer. ... ...

    Abstract Robust experimental evidence has highlighted the role of Autotaxin (ATX)/Lysophosphatidic acid (LPA) axis not only in the pathogenesis of chronic inflammatory conditions and especially in fibroproliferative diseases but also in several types of cancer. As a result, different series of substrate-, lipid-based and small-molecule ATX inhibitors have been identified thus far by both academia and pharma. The "crowning achievement" of these drug discovery campaigns was the development and entry of the first-in-class ATX inhibitor (ziritaxestat, GLPG-1690) in advanced clinical trials against idiopathic pulmonary fibrosis. Herein, the potency optimization efforts of a new series of Autotaxin inhibitors, namely 2-substituted-2,6-dihydro-4H-thieno[3,4-c]pyrazol-1-substituted amide, is described using a previously identified novel chemical scaffold as a "hit". The mode of inhibition of the most promising ATX inhibitors was investigated, while their cellular activity, aqueous solubility and cytotoxicity were evaluated. Our pharmacological results were corroborated by chemoinformatic tools (molecular docking and molecular dynamics simulations) deployed, to provide insight into the binding mechanism of the synthesized inhibitors to ATX.
    Mesh-Begriff(e) Humans ; Cheminformatics ; Chronic Disease ; Idiopathic Pulmonary Fibrosis/drug therapy ; Molecular Docking Simulation ; Neoplasms/drug therapy ; Phosphoric Diester Hydrolases/metabolism
    Chemische Substanzen Phosphoric Diester Hydrolases (EC 3.1.4.-) ; GLPG1690
    Sprache Englisch
    Erscheinungsdatum 2023-01-23
    Erscheinungsland France
    Dokumenttyp Journal Article
    ZDB-ID 188597-2
    ISSN 1768-3254 ; 0009-4374 ; 0223-5234
    ISSN (online) 1768-3254
    ISSN 0009-4374 ; 0223-5234
    DOI 10.1016/j.ejmech.2023.115130
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  4. Artikel ; Online: Insights to the Binding of a Selective Adenosine A

    Lagarias, Panagiotis / Barkan, Kerry / Tzortzini, Eva / Stampelou, Margarita / Vrontaki, Eleni / Ladds, Graham / Kolocouris, Antonios

    Journal of chemical information and modeling

    2019  Band 59, Heft 12, Seite(n) 5183–5197

    Abstract: Adenosine ... ...

    Abstract Adenosine A
    Mesh-Begriff(e) Adenosine A3 Receptor Antagonists/chemistry ; Adenosine A3 Receptor Antagonists/metabolism ; Adenosine A3 Receptor Antagonists/pharmacology ; Amides/chemistry ; Amides/metabolism ; Amides/pharmacology ; Melphalan/metabolism ; Melphalan/pharmacology ; Molecular Docking Simulation ; Molecular Dynamics Simulation ; Mutagenesis ; Poisson Distribution ; Protein Binding ; Protein Conformation ; Receptor, Adenosine A3/chemistry ; Receptor, Adenosine A3/genetics ; Receptor, Adenosine A3/metabolism ; Substrate Specificity ; Thermodynamics ; gamma-Globulins/metabolism ; gamma-Globulins/pharmacology
    Chemische Substanzen Adenosine A3 Receptor Antagonists ; Amides ; K-18 conjugate ; Receptor, Adenosine A3 ; gamma-Globulins ; Melphalan (Q41OR9510P)
    Sprache Englisch
    Erscheinungsdatum 2019-12-03
    Erscheinungsland United States
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 190019-5
    ISSN 1549-960X ; 0095-2338
    ISSN (online) 1549-960X
    ISSN 0095-2338
    DOI 10.1021/acs.jcim.9b00751
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  5. Artikel ; Online: The L46P mutant confers a novel allosteric mechanism of resistance toward the influenza A virus M2 S31N proton channel blockers.

    Musharrafieh, Rami / Lagarias, Panagiotis I / Ma, Chunlong / Tan, Gene S / Kolocouris, Antonios / Wang, Jun

    Molecular pharmacology

    2019  Band 96, Heft 2, Seite(n) 148–157

    Abstract: The Food and Drug Administration-approved influenza A antiviral amantadine inhibits the wild-type (WT) AM2 channel but not the S31N mutant predominantly found in circulating strains. In this study, serial viral passages were applied to select resistance ... ...

    Abstract The Food and Drug Administration-approved influenza A antiviral amantadine inhibits the wild-type (WT) AM2 channel but not the S31N mutant predominantly found in circulating strains. In this study, serial viral passages were applied to select resistance against a newly developed isoxazole-conjugated adamantane inhibitor that targets the AM2 S31N channel. This led to the identification of the novel drug-resistant mutation L46P located outside the drug-binding site, which suggests an allosteric resistance mechanism. Intriguingly, when the L46P mutant was introduced to AM2 WT, the channel remained sensitive toward amantadine inhibition. To elucidate the molecular mechanism, molecular dynamics simulations and binding free energy molecular mechanics-generalized born surface area (MM-GBSA) calculations were performed on WT and mutant channels. It was found that the L46P mutation caused a conformational change in the N terminus of transmembrane residues 22-31 that ultimately broadened the drug-binding site of AM2 S31N inhibitor
    Mesh-Begriff(e) Allosteric Regulation/drug effects ; Amantadine/pharmacology ; Amino Acid Motifs ; Animals ; Antiviral Agents/chemistry ; Antiviral Agents/pharmacology ; Binding Sites ; Dogs ; Drug Resistance, Viral ; Female ; Humans ; Influenza A virus/drug effects ; Influenza A virus/metabolism ; Madin Darby Canine Kidney Cells ; Models, Molecular ; Molecular Dynamics Simulation ; Mutation ; Protein Conformation ; Serial Passage ; Structure-Activity Relationship ; Viral Matrix Proteins/chemistry ; Viral Matrix Proteins/genetics ; Xenopus laevis
    Chemische Substanzen Antiviral Agents ; M2 protein, Influenza A virus ; Viral Matrix Proteins ; Amantadine (BF4C9Z1J53)
    Sprache Englisch
    Erscheinungsdatum 2019-06-07
    Erscheinungsland United States
    Dokumenttyp Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 124034-1
    ISSN 1521-0111 ; 0026-895X
    ISSN (online) 1521-0111
    ISSN 0026-895X
    DOI 10.1124/mol.119.116640
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  6. Artikel ; Online: Structural Characterization of Agonist Binding to an A

    Stamatis, Dimitrios / Lagarias, Panagiotis / Barkan, Kerry / Vrontaki, Eleni / Ladds, Graham / Kolocouris, Antonios

    Journal of medicinal chemistry

    2019  Band 62, Heft 19, Seite(n) 8831–8846

    Abstract: The adenosine ... ...

    Abstract The adenosine A
    Mesh-Begriff(e) Adenosine/analogs & derivatives ; Adenosine/chemistry ; Adenosine/metabolism ; Adenosine/pharmacology ; Adenosine A3 Receptor Agonists/chemistry ; Adenosine A3 Receptor Agonists/metabolism ; Adenosine A3 Receptor Agonists/pharmacology ; Animals ; Binding Sites ; CHO Cells ; Cricetinae ; Cricetulus ; Humans ; Hydrogen Bonding ; Molecular Dynamics Simulation ; Mutagenesis, Site-Directed ; Receptor, Adenosine A3/chemistry ; Receptor, Adenosine A3/genetics ; Receptor, Adenosine A3/metabolism ; Signal Transduction/drug effects ; Thermodynamics
    Chemische Substanzen Adenosine A3 Receptor Agonists ; Receptor, Adenosine A3 ; N(6)-(3-iodobenzyl)-5'-N-methylcarboxamidoadenosine (152918-18-8) ; Adenosine (K72T3FS567)
    Sprache Englisch
    Erscheinungsdatum 2019-09-27
    Erscheinungsland United States
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 218133-2
    ISSN 1520-4804 ; 0022-2623
    ISSN (online) 1520-4804
    ISSN 0022-2623
    DOI 10.1021/acs.jmedchem.9b01164
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  7. Artikel ; Online: Ebselen, Disulfiram, Carmofur, PX-12, Tideglusib, and Shikonin Are Nonspecific Promiscuous SARS-CoV-2 Main Protease Inhibitors.

    Ma, Chunlong / Hu, Yanmei / Townsend, Julia Alma / Lagarias, Panagiotis I / Marty, Michael Thomas / Kolocouris, Antonios / Wang, Jun

    ACS pharmacology & translational science

    2020  Band 3, Heft 6, Seite(n) 1265–1277

    Abstract: Among the drug targets being investigated for SARS-CoV-2, the viral main protease ( ... ...

    Abstract Among the drug targets being investigated for SARS-CoV-2, the viral main protease (M
    Sprache Englisch
    Erscheinungsdatum 2020-10-09
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ISSN 2575-9108
    ISSN (online) 2575-9108
    DOI 10.1021/acsptsci.0c00130
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  8. Artikel ; Online: Investigation of the Drug Resistance Mechanism of M2-S31N Channel Blockers through Biomolecular Simulations and Viral Passage Experiments.

    Musharrafieh, Rami / Lagarias, Panagiotis / Ma, Chunlong / Hau, Raymond / Romano, Alex / Lambrinidis, George / Kolocouris, Antonios / Wang, Jun

    ACS pharmacology & translational science

    2020  Band 3, Heft 4, Seite(n) 666–675

    Abstract: Recent efforts in drug development against influenza A virus (IAV) M2 proton channel S31N mutant resulted in conjugates of amantadine linked with aryl head heterocycles. To understand the mechanism of drug resistance, we chose a representative M2-S31N ... ...

    Abstract Recent efforts in drug development against influenza A virus (IAV) M2 proton channel S31N mutant resulted in conjugates of amantadine linked with aryl head heterocycles. To understand the mechanism of drug resistance, we chose a representative M2-S31N inhibitor, compound
    Sprache Englisch
    Erscheinungsdatum 2020-03-31
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ISSN 2575-9108
    ISSN (online) 2575-9108
    DOI 10.1021/acsptsci.0c00018
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  9. Artikel: Ebselen, disulfiram, carmofur, PX-12, tideglusib, and shikonin are non-specific promiscuous SARS-CoV-2 main protease inhibitors.

    Ma, Chunlong / Hu, Yanmei / Townsend, Julia Alma / Lagarias, Panagiotis I / Marty, Michael Thomas / Kolocouris, Antonios / Wang, Jun

    bioRxiv : the preprint server for biology

    2020  

    Abstract: There is an urgent need for vaccines and antiviral drugs to combat the COVID-19 pandemic. Encouraging progress has been made in developing antivirals targeting SARS-CoV-2, the etiological agent of COVID-19. Among the drug targets being investigated, the ... ...

    Abstract There is an urgent need for vaccines and antiviral drugs to combat the COVID-19 pandemic. Encouraging progress has been made in developing antivirals targeting SARS-CoV-2, the etiological agent of COVID-19. Among the drug targets being investigated, the viral main protease (M
    Schlagwörter covid19
    Sprache Englisch
    Erscheinungsdatum 2020-09-16
    Erscheinungsland United States
    Dokumenttyp Preprint
    DOI 10.1101/2020.09.15.299164
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  10. Artikel ; Online: Discovery of Novel Adenosine Receptor Antagonists through a Combined Structure- and Ligand-Based Approach Followed by Molecular Dynamics Investigation of Ligand Binding Mode.

    Lagarias, Panagiotis / Vrontaki, Eleni / Lambrinidis, George / Stamatis, Dimitrios / Convertino, Marino / Ortore, Gabriella / Mavromoustakos, Thomas / Klotz, Karl-Norbert / Kolocouris, Antonios

    Journal of chemical information and modeling

    2018  Band 58, Heft 4, Seite(n) 794–815

    Abstract: An intense effort is made by pharmaceutical and academic research laboratories to identify and develop selective antagonists for each adenosine receptor (AR) subtype as potential clinical candidates for "soft" treatment of various diseases. Crystal ... ...

    Abstract An intense effort is made by pharmaceutical and academic research laboratories to identify and develop selective antagonists for each adenosine receptor (AR) subtype as potential clinical candidates for "soft" treatment of various diseases. Crystal structures of subtypes A
    Mesh-Begriff(e) Drug Discovery ; Drug Evaluation, Preclinical ; Humans ; Ligands ; Molecular Docking Simulation ; Molecular Dynamics Simulation ; Protein Binding ; Protein Conformation ; Purinergic P1 Receptor Antagonists/chemistry ; Purinergic P1 Receptor Antagonists/metabolism ; Purinergic P1 Receptor Antagonists/pharmacology ; Receptors, Purinergic P1/chemistry ; Receptors, Purinergic P1/metabolism ; Structure-Activity Relationship ; Thermodynamics
    Chemische Substanzen Ligands ; Purinergic P1 Receptor Antagonists ; Receptors, Purinergic P1
    Sprache Englisch
    Erscheinungsdatum 2018-03-19
    Erscheinungsland United States
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 190019-5
    ISSN 1549-960X ; 0095-2338
    ISSN (online) 1549-960X
    ISSN 0095-2338
    DOI 10.1021/acs.jcim.7b00455
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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