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  1. Article: Montelukast is a dual-purpose inhibitor of SARS-CoV-2 infection and virus-induced IL-6 expression identified by structure-based drug repurposing

    Luedemann, Max / Stadler, Daniela / Cheng, Cho-Chin / Protzer, Ulrike / Knolle, Percy A. / Donakonda, Sainitin

    Computational and Structural Biotechnology Journal. 2022, v. 20

    2022  

    Abstract: Drug-repurposing has been instrumental to identify drugs preventing SARS-CoV-2 replication or attenuating the disease course of COVID-19. Here, we identify through structure-based drug-repurposing a dual-purpose inhibitor of SARS-CoV-2 infection and of ... ...

    Abstract Drug-repurposing has been instrumental to identify drugs preventing SARS-CoV-2 replication or attenuating the disease course of COVID-19. Here, we identify through structure-based drug-repurposing a dual-purpose inhibitor of SARS-CoV-2 infection and of IL-6 production by immune cells. We created a computational structure model of the receptor binding domain (RBD) of the SARS-CoV-2 spike 1 protein, and used this model for insilico screening against a library of 6171 molecularly defined binding-sites from drug molecules. Molecular dynamics simulation of candidate molecules with high RBD binding-scores in docking analysis predicted montelukast, an antagonist of the cysteinyl-leukotriene-receptor, to disturb the RBD structure, and infection experiments demonstrated inhibition of SARS-CoV-2 infection, although montelukast binding was outside the ACE2-binding site. Molecular dynamics simulation of SARS-CoV-2 variant RBDs correctly predicted interference of montelukast with infection by the beta but not the more infectious alpha variant. With distinct binding sites for RBD and the leukotriene receptor, montelukast also prevented SARS-CoV-2-induced IL-6 release from immune cells. The inhibition of SARS-CoV-2 infection through a molecule binding distal to the ACE-binding site of the RBD points towards an allosteric mechanism that is not conserved in the more infectious alpha and delta SARS-CoV-2 variants.
    Keywords COVID-19 infection ; Severe acute respiratory syndrome coronavirus 2 ; antagonists ; binding sites ; biotechnology ; disease course ; drugs ; interleukin-6 ; models ; molecular dynamics
    Language English
    Size p. 799-811.
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 2694435-2
    ISSN 2001-0370
    ISSN 2001-0370
    DOI 10.1016/j.csbj.2022.01.024
    Database NAL-Catalogue (AGRICOLA)

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  2. Article: Montelukast is a dual-purpose inhibitor of SARS-CoV-2 infection and virus-induced IL-6 expression identified by structure-based drug repurposing.

    Luedemann, Max / Stadler, Daniela / Cheng, Cho-Chin / Protzer, Ulrike / Knolle, Percy A / Donakonda, Sainitin

    Computational and structural biotechnology journal

    2022  Volume 20, Page(s) 799–811

    Abstract: Drug-repurposing has been instrumental to identify drugs preventing SARS-CoV-2 replication or attenuating the disease course of COVID-19. Here, we identify through structure-based drug-repurposing a dual-purpose inhibitor of SARS-CoV-2 infection and of ... ...

    Abstract Drug-repurposing has been instrumental to identify drugs preventing SARS-CoV-2 replication or attenuating the disease course of COVID-19. Here, we identify through structure-based drug-repurposing a dual-purpose inhibitor of SARS-CoV-2 infection and of IL-6 production by immune cells. We created a computational structure model of the receptor binding domain (RBD) of the SARS-CoV-2 spike 1 protein, and used this model for
    Language English
    Publishing date 2022-01-29
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2694435-2
    ISSN 2001-0370
    ISSN 2001-0370
    DOI 10.1016/j.csbj.2022.01.024
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Book ; Online ; Thesis: Die Regulation der Produktion des Hepatocyte Growth Factor in sinusoidalen Leberendothelzellen

    Lüdemann, Max Verfasser] / [Knolle, Percy A. [Akademischer Betreuer] / Knolle, Percy A. [Gutachter] / Zehn, Dietmar [Gutachter]

    2022  

    Author's details Max Lüdemann ; Gutachter: Percy A. Knolle, Dietmar Zehn ; Betreuer: Percy A. Knolle
    Keywords Naturwissenschaften ; Science
    Subject code sg500
    Language German
    Publisher Universitätsbibliothek der TU München
    Publishing place München
    Document type Book ; Online ; Thesis
    Database Digital theses on the web

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  4. Article ; Online: IL-6-induced FOXO1 activity determines the dynamics of metabolism in CD8 T cells cross-primed by liver sinusoidal endothelial cells.

    Dudek, Michael / Lohr, Kerstin / Donakonda, Sainitin / Baumann, Tobias / Lüdemann, Max / Hegenbarth, Silke / Dübbel, Lena / Eberhagen, Carola / Michailidou, Savvoula / Yassin, Abdallah / Prinz, Marco / Popper, Bastian / Rose-John, Stefan / Zischka, Hans / Knolle, Percy A

    Cell reports

    2022  Volume 38, Issue 7, Page(s) 110389

    Abstract: Liver sinusoidal endothelial cells (LSECs) are liver-resident antigen (cross)-presenting cells that generate memory CD8 T cells, but metabolic properties of LSECs and LSEC-primed CD8 T cells remain understudied. Here, we report that high-level ... ...

    Abstract Liver sinusoidal endothelial cells (LSECs) are liver-resident antigen (cross)-presenting cells that generate memory CD8 T cells, but metabolic properties of LSECs and LSEC-primed CD8 T cells remain understudied. Here, we report that high-level mitochondrial respiration and constitutive low-level glycolysis support LSEC scavenger and sentinel functions. LSECs fail to increase glycolysis and co-stimulation after TLR4 activation, indicating absence of metabolic and functional maturation compared with immunogenic dendritic cells. LSEC-primed CD8 T cells show a transient burst of oxidative phosphorylation and glycolysis. Mechanistically, co-stimulatory IL-6 signaling ensures high FOXO1 expression in LSEC-primed CD8 T cells, curtails metabolic activity associated with T cell activation, and is indispensable for T cell functionality after re-activation. Thus, distinct immunometabolic features characterize non-immunogenic LSECs compared with immunogenic dendritic cells and LSEC-primed CD8 T cells with memory features compared with effector CD8 T cells. This reveals local features of metabolism and function of T cells in the liver.
    MeSH term(s) Animals ; CD8-Positive T-Lymphocytes/metabolism ; Cell Differentiation/genetics ; Cell Respiration ; Cross-Priming/immunology ; Endothelial Cells/cytology ; Endothelial Cells/metabolism ; Endothelial Cells/ultrastructure ; Forkhead Box Protein O1/metabolism ; Glycolysis ; Interleukin-6/metabolism ; Liver/cytology ; Male ; Metabolomics ; Mice, Inbred C57BL ; Mitochondria/metabolism ; Oxidative Phosphorylation ; Signal Transduction ; Toll-Like Receptor 4/metabolism ; Transcription, Genetic ; Mice
    Chemical Substances Forkhead Box Protein O1 ; Foxo1 protein, mouse ; Interleukin-6 ; Toll-Like Receptor 4
    Language English
    Publishing date 2022-02-17
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2649101-1
    ISSN 2211-1247 ; 2211-1247
    ISSN (online) 2211-1247
    ISSN 2211-1247
    DOI 10.1016/j.celrep.2022.110389
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Book ; Online: Öffentliches Wirtschaftsrecht und ökonomisches Wissen

    Lüdemann, Jörn

    (Preprints of the Max Planck Institute for Research on Collective Goods ; 2012,18)

    2012  

    Author's details Jörn Lüdemann
    Series title Preprints of the Max Planck Institute for Research on Collective Goods ; 2012,18
    Keywords Wirtschaftsrecht ; Öffentliches Recht ; Aufsichtsbehörde ; Politikberatung ; Deutschland
    Language English
    Size Online-Ressource (24 S.)
    Edition revised version: December 2012
    Publisher Max Planck Inst. for Research on Collective Goods
    Publishing place Bonn
    Document type Book ; Online
    Note IMD-Felder maschinell generiert
    Database ECONomics Information System

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  6. Book ; Online: Rechtsetzung und Interdisziplinarität in der Verwaltungsrechtswissenschaft

    Lüdemann, Jörn

    (Preprints of the Max Planck Institute for Research on Collective Goods ; 2009,30)

    2009  

    Author's details Jörn Lüdemann
    Series title Preprints of the Max Planck Institute for Research on Collective Goods ; 2009,30
    Keywords Verwaltungsrecht ; Rechtswissenschaft
    Language English
    Size Online-Ressource (25 S.)
    Publisher Max Planck Inst. for Research on Collective Goods
    Publishing place Bonn
    Document type Book ; Online
    Note IMD-Felder maschinell generiert
    Database ECONomics Information System

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  7. Book ; Online: Wettbewerb und Regulierung in der Telekommunikation

    Lüdemann, Jörn

    das Telekommunikationsrecht vor den Herausforderungen dynamischer Märkte

    (Preprints of the Max Planck Institute for Research on Collective Goods ; 2008,35)

    2008  

    Author's details Jörn Lüdemann
    Series title Preprints of the Max Planck Institute for Research on Collective Goods ; 2008,35
    Keywords Telekommunikationspolitik ; Wettbewerbspolitik ; Telekommunikationsrecht ; Subsidiarität ; Deutschland ; EU-Staaten
    Language German
    Size Online-Ressource (29 S.)
    Publisher Max Planck Inst. for Research on Collective Goods
    Publishing place Bonn
    Document type Book ; Online
    Note IMD-Felder maschinell generiert
    Database ECONomics Information System

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  8. Article ; Online: In vivo assessment of catheter positioning accuracy and prolonged irradiation time on liver tolerance dose after single-fraction 192Ir high-dose-rate brachytherapy.

    Lüdemann, Lutz / Wybranski, Christian / Seidensticker, Max / Mohnike, Konrad / Kropf, Siegfried / Wust, Peter / Ricke, Jens

    Radiation oncology (London, England)

    2011  Volume 6, Page(s) 107

    Abstract: Background: To assess brachytherapy catheter positioning accuracy and to evaluate the effects of prolonged irradiation time on the tolerance dose of normal liver parenchyma following single-fraction irradiation with 192Ir.: Materials and methods: ... ...

    Abstract Background: To assess brachytherapy catheter positioning accuracy and to evaluate the effects of prolonged irradiation time on the tolerance dose of normal liver parenchyma following single-fraction irradiation with 192Ir.
    Materials and methods: Fifty patients with 76 malignant liver tumors treated by computed tomography (CT)-guided high-dose-rate brachytherapy (HDR-BT) were included in the study. The prescribed radiation dose was delivered by 1 - 11 catheters with exposure times in the range of 844 - 4432 seconds. Magnetic resonance imaging (MRI) datasets for assessing irradiation effects on normal liver tissue, edema, and hepatocyte dysfunction, obtained 6 and 12 weeks after HDR-BT, were merged with 3D dosimetry data. The isodose of the treatment plan covering the same volume as the irradiation effect was taken as a surrogate for the liver tissue tolerance dose. Catheter positioning accuracy was assessed by calculating the shift between the 3D center coordinates of the irradiation effect volume and the tolerance dose volume for 38 irradiation effects in 30 patients induced by catheters implanted in nearly parallel arrangement. Effects of prolonged irradiation were assessed in areas where the irradiation effect volume and tolerance dose volume did not overlap (mismatch areas) by using a catheter contribution index. This index was calculated for 48 irradiation effects induced by at least two catheters in 44 patients.
    Results: Positioning accuracy of the brachytherapy catheters was 5-6 mm. The orthogonal and axial shifts between the center coordinates of the irradiation effect volume and the tolerance dose volume in relation to the direction vector of catheter implantation were highly correlated and in first approximation identically in the T1-w and T2-w MRI sequences (p = 0.003 and p < 0.001, respectively), as were the shifts between 6 and 12 weeks examinations (p = 0.001 and p = 0.004, respectively). There was a significant shift of the irradiation effect towards the catheter entry site compared with the planned dose distribution (p < 0.005). Prolonged treatment time increases the normal tissue tolerance dose. Here, the catheter contribution indices indicated a lower tolerance dose of the liver parenchyma in areas with prolonged irradiation (p < 0.005).
    Conclusions: Positioning accuracy of brachytherapy catheters is sufficient for clinical practice. Reduced tolerance dose in areas exposed to prolonged irradiation is contradictory to results published in the current literature. Effects of prolonged dose administration on the liver tolerance dose for treatment times of up to 60 minutes per HDR-BT session are not pronounced compared to effects of positioning accuracy of the brachytherapy catheters and are therefore of minor importance in treatment planning.
    MeSH term(s) Brachytherapy/methods ; Catheterization ; Humans ; Image Processing, Computer-Assisted/methods ; Iridium Radioisotopes/pharmacology ; Liver/radiation effects ; Magnetic Resonance Imaging/methods ; Male ; Models, Statistical ; Neoplasms/radiotherapy ; Prostatic Neoplasms/radiotherapy ; Radiometry/methods ; Radiotherapy Dosage ; Radiotherapy Planning, Computer-Assisted/methods ; Reproducibility of Results ; Retrospective Studies ; Time Factors ; Tomography, X-Ray Computed/methods
    Chemical Substances Iridium Radioisotopes
    Language English
    Publishing date 2011-09-05
    Publishing country England
    Document type Journal Article
    ISSN 1748-717X
    ISSN (online) 1748-717X
    DOI 10.1186/1748-717X-6-107
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Book ; Online: Netzwerke, Öffentliches Recht und Rezeptionstheorie

    Lüdemann, Jörn

    (Preprints of the Max Planck Institute for Research on Collective Goods ; 2007,7)

    2007  

    Author's details Jörn Lüdemann
    Series title Preprints of the Max Planck Institute for Research on Collective Goods ; 2007,7
    Keywords Netzwerk ; Rechtswissenschaft ; Öffentliches Recht
    Language German
    Size Online-Ressource, 15 S., Text
    Publisher Max Planck Inst. for Research on Collective Goods
    Publishing place Bonn
    Document type Book ; Online
    Note IMD-Felder maschinell generiert
    Database ECONomics Information System

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  10. Book ; Online: Die Grenzen des homo oeconomicus und die Rechtswissenschaft

    Lüdemann, Jörn

    (Preprints of the Max Planck Institute for Research on Collective Goods ; 2006,2)

    2006  

    Author's details Jörn Lüdemann
    Series title Preprints of the Max Planck Institute for Research on Collective Goods ; 2006,2
    Keywords 24#60#34#81
    Language German
    Size Online-Ressource, 49 S., Text
    Publisher Max Planck Inst. for Research on Collective Goods
    Publishing place Bonn
    Document type Book ; Online
    Note IMD-Felder maschinell generiert
    Database ECONomics Information System

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