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  1. Article ; Online: Role of glutathione metabolism in host defense against

    Kerstholt, Mariska / Vrijmoeth, Hedwig / Lachmandas, Ekta / Oosting, Marije / Lupse, Mihaela / Flonta, Mirela / Dinarello, Charles A / Netea, Mihai G / Joosten, Leo A B

    Proceedings of the National Academy of Sciences of the United States of America

    2018  Volume 115, Issue 10, Page(s) E2320–E2328

    Abstract: Pathogen-induced changes in host cell metabolism are known to be important for the immune response. In this study, we investigated how infection with the Lyme disease-causing ... ...

    Abstract Pathogen-induced changes in host cell metabolism are known to be important for the immune response. In this study, we investigated how infection with the Lyme disease-causing bacterium
    MeSH term(s) Borrelia burgdorferi/physiology ; Cytokines/genetics ; Cytokines/metabolism ; Glutathione/metabolism ; Host-Pathogen Interactions ; Humans ; Lyme Disease/genetics ; Lyme Disease/metabolism ; Lyme Disease/microbiology ; Monocytes/metabolism ; Reactive Oxygen Species/metabolism
    Chemical Substances Cytokines ; Reactive Oxygen Species ; Glutathione (GAN16C9B8O)
    Language English
    Publishing date 2018-02-14
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 209104-5
    ISSN 1091-6490 ; 0027-8424
    ISSN (online) 1091-6490
    ISSN 0027-8424
    DOI 10.1073/pnas.1720833115
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Role of Glutamine Metabolism in Host Defense Against Mycobacterium tuberculosis Infection.

    Koeken, Valerie A C M / Lachmandas, Ekta / Riza, Anca / Matzaraki, Vasiliki / Li, Yang / Kumar, Vinod / Oosting, Marije / Joosten, Leo A B / Netea, Mihai G / van Crevel, Reinout

    The Journal of infectious diseases

    2018  Volume 219, Issue 10, Page(s) 1662–1670

    Abstract: Background: Rewiring cellular metabolism is important for activation of immune cells during host defense against Mycobacterium tuberculosis. Glutamine has been implicated as an immunomodulatory nutrient, but its role in the response to M. tuberculosis ... ...

    Abstract Background: Rewiring cellular metabolism is important for activation of immune cells during host defense against Mycobacterium tuberculosis. Glutamine has been implicated as an immunomodulatory nutrient, but its role in the response to M. tuberculosis is unknown.
    Methods: We assessed expression of glutamine pathway genes in M. tuberculosis-infected macrophages and blood transcriptomic profiles of individuals with latent M. tuberculosis infection or tuberculosis. Subsequently, we studied the effect of blocking glutaminolysis on M. tuberculosis-induced cytokines. Finally, we examined whether polymorphisms in genes involved in the glutamine pathway influence M. tuberculosis-induced cytokines in a cohort of 500 individuals.
    Results: Glutamine pathway genes were differentially expressed in infected macrophages and patients with tuberculosis. Human peripheral blood mononuclear cells stimulated with M. tuberculosis displayed decreased cytokine (ie, interleukin 1β, interferon γ, and interleukin 17) responses when medium was devoid of glutamine. Specific inhibitors of the glutamine pathway led to decreased cytokine responses, especially T-cell cytokines (ie, interferon γ, interleukin 17, and interleukin 22). Finally, genetic polymorphisms in glutamine metabolism genes (including GLS2, SLC1A5, and SLC7A5) influenced ex vivo cytokine responses to M. tuberculosis, especially for T-cell cytokines.
    Conclusions: Cellular glutamine metabolism is implicated in effective host responses against M. tuberculosis. Targeting immunometabolism may represent new strategies for tuberculosis prevention and/or treatment.
    MeSH term(s) Cells, Cultured ; Cytokines/metabolism ; Gene Expression Profiling ; Glutamine/metabolism ; Humans ; Latent Tuberculosis/immunology ; Latent Tuberculosis/metabolism ; Leukocytes, Mononuclear/immunology ; Leukocytes, Mononuclear/metabolism ; Macrophages/metabolism ; Mycobacterium tuberculosis/physiology ; Polymorphism, Genetic ; Tuberculosis/immunology ; Tuberculosis/metabolism
    Chemical Substances Cytokines ; Glutamine (0RH81L854J)
    Language English
    Publishing date 2018-12-19
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 3019-3
    ISSN 1537-6613 ; 0022-1899
    ISSN (online) 1537-6613
    ISSN 0022-1899
    DOI 10.1093/infdis/jiy709
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Metformin enhances anti-mycobacterial responses by educating CD8+ T-cell immunometabolic circuits.

    Böhme, Julia / Martinez, Nuria / Li, Shamin / Lee, Andrea / Marzuki, Mardiana / Tizazu, Anteneh Mehari / Ackart, David / Frenkel, Jessica Haugen / Todd, Alexandra / Lachmandas, Ekta / Lum, Josephine / Shihui, Foo / Ng, Tze Pin / Lee, Bernett / Larbi, Anis / Netea, Mihai G / Basaraba, Randall / van Crevel, Reinout / Newell, Evan /
    Kornfeld, Hardy / Singhal, Amit

    Nature communications

    2020  Volume 11, Issue 1, Page(s) 5225

    Abstract: Patients with type 2 diabetes (T2D) have a lower risk of Mycobacterium tuberculosis infection, progression from infection to tuberculosis (TB) disease, TB morality and TB recurrence, when being treated with metformin. However, a detailed mechanistic ... ...

    Abstract Patients with type 2 diabetes (T2D) have a lower risk of Mycobacterium tuberculosis infection, progression from infection to tuberculosis (TB) disease, TB morality and TB recurrence, when being treated with metformin. However, a detailed mechanistic understanding of these protective effects is lacking. Here, we use mass cytometry to show that metformin treatment expands a population of memory-like antigen-inexperienced CD8
    MeSH term(s) Animals ; BCG Vaccine/administration & dosage ; BCG Vaccine/immunology ; CD8-Positive T-Lymphocytes/drug effects ; CD8-Positive T-Lymphocytes/immunology ; CD8-Positive T-Lymphocytes/metabolism ; Diabetes Mellitus, Type 2/complications ; Diabetes Mellitus, Type 2/drug therapy ; Diabetes Mellitus, Type 2/immunology ; Diabetes Mellitus, Type 2/metabolism ; Female ; Guinea Pigs ; Humans ; Hypoglycemic Agents/administration & dosage ; Male ; Metformin/administration & dosage ; Mice ; Mycobacterium tuberculosis/drug effects ; Mycobacterium tuberculosis/immunology ; Mycobacterium tuberculosis/physiology ; Tuberculosis/etiology ; Tuberculosis/immunology ; Tuberculosis/microbiology ; Tuberculosis/prevention & control
    Chemical Substances BCG Vaccine ; Hypoglycemic Agents ; Metformin (9100L32L2N)
    Language English
    Publishing date 2020-10-16
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-020-19095-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: The effect of hyperglycaemia on in vitro cytokine production and macrophage infection with Mycobacterium tuberculosis.

    Lachmandas, Ekta / Vrieling, Frank / Wilson, Louis G / Joosten, Simone A / Netea, Mihai G / Ottenhoff, Tom H / van Crevel, Reinout

    PloS one

    2015  Volume 10, Issue 2, Page(s) e0117941

    Abstract: Type 2 diabetes mellitus is an established risk factor for tuberculosis but the underlying mechanisms are largely unknown. We examined the effects of hyperglycaemia, a hallmark of diabetes, on the cytokine response to and macrophage infection with ... ...

    Abstract Type 2 diabetes mellitus is an established risk factor for tuberculosis but the underlying mechanisms are largely unknown. We examined the effects of hyperglycaemia, a hallmark of diabetes, on the cytokine response to and macrophage infection with Mycobacterium tuberculosis. Increasing in vitro glucose concentrations from 5 to 25 mmol/L had marginal effects on cytokine production following stimulation of peripheral blood mononuclear cells (PBMCs) with M. tuberculosis lysate, LPS or Candida albicans, while 40 mmol/L glucose increased production of TNF-α, IL-1β, IL-6 and IL-10, but not of IFN-γ, IL-17A and IL-22. Macrophage differentiation under hyperglycaemic conditions of 25 mmol/L glucose was also associated with increased cytokine production upon stimulation with M. tuberculosis lysate and LPS but in infection experiments no differences in M. tuberculosis killing or outgrowth was observed. The phagocytic capacity of these hyperglycaemic macrophages also remained unaltered. The fact that only very high glucose concentrations were able to significantly influence cytokine production by macrophages suggests that hyperglycaemia alone cannot fully explain the increased susceptibility of diabetes mellitus patients to tuberculosis.
    MeSH term(s) Candida albicans/immunology ; Cell Differentiation/immunology ; Diabetes Mellitus, Type 2/immunology ; Diabetes Mellitus, Type 2/microbiology ; Humans ; Hyperglycemia/immunology ; Hyperglycemia/microbiology ; Interferon-gamma/immunology ; Interleukins/immunology ; Leukocytes, Mononuclear/immunology ; Leukocytes, Mononuclear/microbiology ; Lipopolysaccharides/immunology ; Macrophages/immunology ; Macrophages/microbiology ; Middle Aged ; Mycobacterium tuberculosis/immunology ; Tuberculosis/immunology ; Tuberculosis/microbiology ; Tumor Necrosis Factor-alpha/immunology
    Chemical Substances Interleukins ; Lipopolysaccharides ; Tumor Necrosis Factor-alpha ; Interferon-gamma (82115-62-6)
    Language English
    Publishing date 2015
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1932-6203
    ISSN (online) 1932-6203
    DOI 10.1371/journal.pone.0117941
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  5. Article ; Online: Diabetes Mellitus and Increased Tuberculosis Susceptibility: The Role of Short-Chain Fatty Acids.

    Lachmandas, Ekta / van den Heuvel, Corina N A M / Damen, Michelle S M A / Cleophas, Maartje C P / Netea, Mihai G / van Crevel, Reinout

    Journal of diabetes research

    2015  Volume 2016, Page(s) 6014631

    Abstract: Type 2 diabetes mellitus confers a threefold increased risk for tuberculosis, but the underlying immunological mechanisms are still largely unknown. Possible mediators of this increased susceptibility are short-chain fatty acids, levels of which have ... ...

    Abstract Type 2 diabetes mellitus confers a threefold increased risk for tuberculosis, but the underlying immunological mechanisms are still largely unknown. Possible mediators of this increased susceptibility are short-chain fatty acids, levels of which have been shown to be altered in individuals with diabetes. We examined the influence of physiological concentrations of butyrate on cytokine responses to Mycobacterium tuberculosis (Mtb) in human peripheral blood mononuclear cells (PBMCs). Butyrate decreased Mtb-induced proinflammatory cytokine responses, while it increased production of IL-10. This anti-inflammatory effect was independent of butyrate's well-characterised inhibition of HDAC activity and was not accompanied by changes in Toll-like receptor signalling pathways, the eicosanoid pathway, or cellular metabolism. In contrast blocking IL-10 activity reversed the effects of butyrate on Mtb-induced inflammation. Alteration of the gut microbiota, thereby increasing butyrate concentrations, can reduce insulin resistance and obesity, but further studies are needed to determine how this affects susceptibility to tuberculosis.
    MeSH term(s) Butyrates/pharmacology ; Cells, Cultured ; Cytokines/immunology ; Diabetes Complications/immunology ; Diabetes Complications/microbiology ; Host-Pathogen Interactions ; Humans ; Inflammation Mediators/immunology ; Leukocytes, Mononuclear/drug effects ; Leukocytes, Mononuclear/immunology ; Leukocytes, Mononuclear/microbiology ; Mycobacterium tuberculosis/immunology ; Signal Transduction/drug effects ; Time Factors ; Tuberculosis/immunology ; Tuberculosis/microbiology
    Chemical Substances Butyrates ; Cytokines ; Inflammation Mediators
    Language English
    Publishing date 2015-12-29
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2711897-6
    ISSN 2314-6753 ; 2314-6745
    ISSN (online) 2314-6753
    ISSN 2314-6745
    DOI 10.1155/2016/6014631
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  6. Article ; Online: Microbial stimulation of different Toll-like receptor signalling pathways induces diverse metabolic programmes in human monocytes.

    Lachmandas, Ekta / Boutens, Lily / Ratter, Jacqueline M / Hijmans, Anneke / Hooiveld, Guido J / Joosten, Leo A B / Rodenburg, Richard J / Fransen, Jack A M / Houtkooper, Riekelt H / van Crevel, Reinout / Netea, Mihai G / Stienstra, Rinke

    Nature microbiology

    2016  Volume 2, Page(s) 16246

    Abstract: Microbial stimuli such as lipopolysaccharide (LPS) induce robust metabolic rewiring in immune cells known as the Warburg effect. It is unknown whether this increase in glycolysis and decrease in oxidative phosphorylation (OXPHOS) is a general ... ...

    Abstract Microbial stimuli such as lipopolysaccharide (LPS) induce robust metabolic rewiring in immune cells known as the Warburg effect. It is unknown whether this increase in glycolysis and decrease in oxidative phosphorylation (OXPHOS) is a general characteristic of monocytes that have encountered a pathogen. Using CD14
    Language English
    Publishing date 2016-12-19
    Publishing country England
    Document type Journal Article
    ISSN 2058-5276
    ISSN (online) 2058-5276
    DOI 10.1038/nmicrobiol.2016.246
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Metformin enhances anti-mycobacterial responses by educating CD8+ T-cell immunometabolic circuits

    Julia Böhme / Nuria Martinez / Shamin Li / Andrea Lee / Mardiana Marzuki / Anteneh Mehari Tizazu / David Ackart / Jessica Haugen Frenkel / Alexandra Todd / Ekta Lachmandas / Josephine Lum / Foo Shihui / Tze Pin Ng / Bernett Lee / Anis Larbi / Mihai G. Netea / Randall Basaraba / Reinout van Crevel / Evan Newell /
    Hardy Kornfeld / Amit Singhal

    Nature Communications, Vol 11, Iss 1, Pp 1-

    2020  Volume 15

    Abstract: Metformin is an anti-diabetic drug that has shown promise to reduce M. tuberculosis susceptibility. Here the authors show that this effect is a result of metformin-mediated activation of anti-mycobacterial memory-like antigen-inexperienced CD8+CXCR3+ T ... ...

    Abstract Metformin is an anti-diabetic drug that has shown promise to reduce M. tuberculosis susceptibility. Here the authors show that this effect is a result of metformin-mediated activation of anti-mycobacterial memory-like antigen-inexperienced CD8+CXCR3+ T cells, an effect that also boosts response to BCG vaccination.
    Keywords Science ; Q
    Language English
    Publishing date 2020-10-01T00:00:00Z
    Publisher Nature Portfolio
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: The effect of hyperglycaemia on in vitro cytokine production and macrophage infection with Mycobacterium tuberculosis.

    Ekta Lachmandas / Frank Vrieling / Louis G Wilson / Simone A Joosten / Mihai G Netea / Tom H Ottenhoff / Reinout van Crevel

    PLoS ONE, Vol 10, Iss 2, p e

    2015  Volume 0117941

    Abstract: Type 2 diabetes mellitus is an established risk factor for tuberculosis but the underlying mechanisms are largely unknown. We examined the effects of hyperglycaemia, a hallmark of diabetes, on the cytokine response to and macrophage infection with ... ...

    Abstract Type 2 diabetes mellitus is an established risk factor for tuberculosis but the underlying mechanisms are largely unknown. We examined the effects of hyperglycaemia, a hallmark of diabetes, on the cytokine response to and macrophage infection with Mycobacterium tuberculosis. Increasing in vitro glucose concentrations from 5 to 25 mmol/L had marginal effects on cytokine production following stimulation of peripheral blood mononuclear cells (PBMCs) with M. tuberculosis lysate, LPS or Candida albicans, while 40 mmol/L glucose increased production of TNF-α, IL-1β, IL-6 and IL-10, but not of IFN-γ, IL-17A and IL-22. Macrophage differentiation under hyperglycaemic conditions of 25 mmol/L glucose was also associated with increased cytokine production upon stimulation with M. tuberculosis lysate and LPS but in infection experiments no differences in M. tuberculosis killing or outgrowth was observed. The phagocytic capacity of these hyperglycaemic macrophages also remained unaltered. The fact that only very high glucose concentrations were able to significantly influence cytokine production by macrophages suggests that hyperglycaemia alone cannot fully explain the increased susceptibility of diabetes mellitus patients to tuberculosis.
    Keywords Medicine ; R ; Science ; Q
    Subject code 610
    Language English
    Publishing date 2015-01-01T00:00:00Z
    Publisher Public Library of Science (PLoS)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article ; Online: Metformin Alters Human Host Responses to Mycobacterium tuberculosis in Healthy Subjects.

    Lachmandas, Ekta / Eckold, Clare / Böhme, Julia / Koeken, Valerie A C M / Marzuki, Mardiana Binte / Blok, Bastiaan / Arts, Rob J W / Chen, Jinmiao / Teng, Karen W W / Ratter, Jacqueline / Smolders, Elise J / Van den Heuvel, Corina / Stienstra, Rinke / Dockrell, Hazel M / Newell, Evan / Netea, Mihai G / Singhal, Amit / Cliff, Jacqueline M / Van Crevel, Reinout

    The Journal of infectious diseases

    2019  Volume 220, Issue 1, Page(s) 139–150

    Abstract: Background: Metformin, the most widely administered diabetes drug, has been proposed as a candidate adjunctive host-directed therapy for tuberculosis, but little is known about its effects on human host responses to Mycobacterium tuberculosis.: ... ...

    Abstract Background: Metformin, the most widely administered diabetes drug, has been proposed as a candidate adjunctive host-directed therapy for tuberculosis, but little is known about its effects on human host responses to Mycobacterium tuberculosis.
    Methods: We investigated in vitro and in vivo effects of metformin in humans.
    Results: Metformin added to peripheral blood mononuclear cells from healthy volunteers enhanced in vitro cellular metabolism while inhibiting the mammalian target of rapamycin targets p70S6K and 4EBP1, with decreased cytokine production and cellular proliferation and increased phagocytosis activity. Metformin administered to healthy human volunteers led to significant downregulation of genes involved in oxidative phosphorylation, mammalian target of rapamycin signaling, and type I interferon response pathways, particularly following stimulation with M. tuberculosis, and upregulation of genes involved in phagocytosis and reactive oxygen species production was increased. These in vivo effects were accompanied by a metformin-induced shift in myeloid cells from classical to nonclassical monocytes. At a functional level, metformin lowered ex vivo production of tumor necrosis factor α, interferon γ, and interleukin 1β but increased phagocytosis activity and reactive oxygen species production.
    Conclusion: Metformin has a range of potentially beneficial effects on cellular metabolism, immune function, and gene transcription involved in innate host responses to M. tuberculosis.
    MeSH term(s) Cell Proliferation/drug effects ; Down-Regulation/drug effects ; Healthy Volunteers ; Host-Pathogen Interactions/drug effects ; Humans ; Hypoglycemic Agents/pharmacology ; Leukocytes, Mononuclear/drug effects ; Leukocytes, Mononuclear/microbiology ; Metformin/pharmacology ; Monocytes/drug effects ; Monocytes/metabolism ; Mycobacterium tuberculosis/pathogenicity ; Myeloid Cells/drug effects ; Myeloid Cells/metabolism ; Phagocytosis/drug effects ; Reactive Oxygen Species/metabolism ; Signal Transduction/drug effects ; Tuberculosis/metabolism ; Tuberculosis/microbiology ; Up-Regulation/drug effects
    Chemical Substances Hypoglycemic Agents ; Reactive Oxygen Species ; Metformin (9100L32L2N)
    Language English
    Publishing date 2019-03-21
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 3019-3
    ISSN 1537-6613 ; 0022-1899
    ISSN (online) 1537-6613
    ISSN 0022-1899
    DOI 10.1093/infdis/jiz064
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Correction to: Rewiring of glucose metabolism defines trained immunity induced by oxidized low-density lipoprotein.

    Keating, Samuel T / Groh, Laszlo / Thiem, Kathrin / Bekkering, Siroon / Li, Yang / Matzaraki, Vasiliki / van der Heijden, Charlotte D C C / van Puffelen, Jelmer H / Lachmandas, Ekta / Jansen, Trees / Oosting, Marije / de Bree, L Charlotte J / Koeken, Valerie A C M / Moorlag, Simone J C F M / Mourits, Vera P / van Diepen, Janna / Stienstra, Rinke / Novakovic, Boris / Stunnenberg, Hendrik G /
    van Crevel, Reinout / Joosten, Leo A B / Netea, Mihai G / Riksen, Niels P

    Journal of molecular medicine (Berlin, Germany)

    2019  Volume 98, Issue 7, Page(s) 1051

    Abstract: The correct name of the 17th Author is presented in this paper. ...

    Abstract The correct name of the 17th Author is presented in this paper.
    Language English
    Publishing date 2019-10-03
    Publishing country Germany
    Document type Published Erratum
    ZDB-ID 1223802-8
    ISSN 1432-1440 ; 0946-2716
    ISSN (online) 1432-1440
    ISSN 0946-2716
    DOI 10.1007/s00109-020-01939-2
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