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Nemani SSP, Lunding L, Wegmann M, Kopp MV, Weckmann M. COL4A3 degradation may depend on MMP9 in experimental asthma
exacerbations. KLINISCHE PADIATRIE 2022. [DOI: 10.1055/s-0042-1754465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Geißler D, Wegmann M, Jochum T, Somma V, Sowa M, Scholz J, Fröhlich E, Hoffmann K, Niehaus J, Roggenbuck D, Resch-Genger U. An automatable platform for genotoxicity testing of nanomaterials based on the fluorometric γ-H2AX assay reveals no genotoxicity of properly surface-shielded cadmium-based quantum dots. NANOSCALE 2019; 11:13458-13468. [PMID: 31287475 DOI: 10.1039/c9nr01021a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The large number of nanomaterial-based applications emerging in the materials and life sciences and the foreseeable increasing use of these materials require methods that evaluate and characterize the toxic potential of these nanomaterials to keep safety risks to people and environment as low as possible. As nanomaterial toxicity is influenced by a variety of parameters like size, shape, chemical composition, and surface chemistry, high throughput screening (HTS) platforms are recommended for assessing cytotoxicity. Such platforms are not yet available for genotoxicity testing. Here, we present first results obtained for application-relevant nanomaterials using an automatable genotoxicity platform that relies on the quantification of the phosphorylated histone H2AX (γ-H2AX) for detecting DNA double strand breaks (DSBs) and the automated microscope system AKLIDES® for measuring integral fluorescence intensities at different excitation wavelengths. This platform is used to test the genotoxic potential of 30 nm-sized citrate-stabilized gold nanoparticles (Au-NPs) as well as micellar encapsulated iron oxide nanoparticles (FeOx-NPs) and different cadmium (Cd)-based semiconductor quantum dots (QDs), thereby also searching for positive and negative controls as reference materials. In addition, the influence of the QD shell composition on the genotoxic potential of these Cd-based QDs was studied, using CdSe cores as well as CdSe/CdS core/shell and CdSe/CdS/ZnS core/shell/shell QDs. Our results clearly revealed the genotoxicity of the Au-NPs and its absence in the FeOx-NPs. The genotoxicity of the Cd-QDs correlates with the shielding of their Cd-containing core, with the core/shell/shell architecture preventing genotoxicity risks. The fact that none of these nanomaterials showed cytotoxicity at the chosen particle concentrations in a conventional cell viability assay underlines the importance of genotoxicity studies to assess the hazardous potential of nanomaterials.
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Buchanan GM, Beresford AE, Hebblewhite M, Escobedo FJ, De Klerk HM, Donald PF, Escribano P, Koh LP, Martínez-López J, Pettorelli N, Skidmore AK, Szantoi Z, Tabor K, Wegmann M, Wich S. Free satellite data key to conservation. SCIENCE (NEW YORK, N.Y.) 2018; 361:139-140. [PMID: 30002246 DOI: 10.1126/science.aau2650] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Bodenstein-Sgro R, Webering S, Wegmann M. Kinetics of an asthma exacerbation in the mouse model. Pneumologie 2018. [DOI: 10.1055/s-0037-1619434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Werner C, Hecksteden A, Zundler J, Wegmann M, Boehm M, Meyer T, Laufs U. P3996Prospective study of differential effects of aerobic endurance, interval and resistance training on telomerase activity and telomere length in circulating mononuclear cells. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Schröder A, Lunding L, Webering S, Vock C, Raedler D, Schaub B, Fehrenbach H, Wegmann M. IL-1R1 but not IL-18BP contributes to the beneficial effects of IL-37 on allergic asthma. Pneumologie 2017. [DOI: 10.1055/s-0037-1598370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Schröder A, Lunding L, Webering S, Vock C, Raedler D, Schaub B, Fehrenbach H, Wegmann M. Immunomodulatory role of IL-37 in asthma pathogenesis. Pneumologie 2016. [DOI: 10.1055/s-0036-1584619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Vock C, Yildirim AÖ, Wagner C, Schlick S, Lunding LP, Lee CG, Elias JA, Fehrenbach H, Wegmann M. Distal airways are protected from goblet cell metaplasia by diminished expression of IL-13 signalling components. Clin Exp Allergy 2016; 45:1447-58. [PMID: 25772331 DOI: 10.1111/cea.12526] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Revised: 02/19/2015] [Accepted: 02/25/2015] [Indexed: 01/15/2023]
Abstract
BACKGROUND Increased mucus production is a critical factor impairing lung function in patients suffering from bronchial asthma, the most common chronic inflammatory lung disease worldwide. OBJECTIVE This study aimed at investigating whether goblet cell (GC) metaplasia and mucus production are differentially regulated in proximal and distal airways. METHODS Female Balb/c mice were sensitized to ovalbumin (OVA) and challenged with an OVA-aerosol on two consecutive days for 1 week (acute) or 12 weeks (chronic). Real-time RT-PCR analysis was applied on microdissected airways. RESULTS In acutely and chronically OVA-challenged mice, GC metaplasia and mucus production were observed in proximal but not in distal airways. In contrast, inflammation reflected by the infiltration of eosinophils and expression of the TH2-type cytokines IL-4 and IL-13 was increased in both proximal and distal airways. Abundance of IL-13Rα1 was lower in distal airways of healthy control mice. Under acute and chronic OVA-exposure, activation of IL-13Rα1-dependent signalling cascade, reflected by Spdef and Foxo3A transcription factors, was attenuated in distal compared to proximal airways. CONCLUSION AND CLINICAL RELEVANCE These data indicate that distal airways might be less sensitive to IL-13-induced GC metaplasia and mucus production through lower expression of IL-13Rα1 and attenuated activation of downstream signalling. This might represent a protective strategy to prevent mucus plugging of distal airways and thus impaired ventilation of attached alveoli.
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Webering S, Lunding L, Vock C, Fehrenbach H, Wegmann M. The α-melanocyte stimulating hormone diminishes allergic airway inflammation through melanocortin receptor 5. Pneumologie 2016. [DOI: 10.1055/s-0036-1571990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Schröder A, Lunding L, Webering S, Vock C, Raedler D, Schaub B, Fehrenbach H, Wegmann M. IL-37 ameliorates experimental asthma via a mechanism that is independent from IL-18 signaling. Pneumologie 2016. [DOI: 10.1055/s-0036-1572306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Wegmann M, Steffen A, Pütz K, Würtz N, Such U, Faude O, Bohm P, Meyer T. Cardiovascular risk and fitness in veteran football players. J Sports Sci 2015; 34:576-83. [DOI: 10.1080/02640414.2015.1118525] [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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Vock C, Wegmann M, Fehrenbach H. The role of the TGF-β pseudoreceptor Bambi in a mouse model of allergic bronchial asthma. Pneumologie 2015. [DOI: 10.1055/s-0035-1548658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Webering S, Lunding L, Fehrenbach H, Wegmann M. Treatment of airway inflammation and airway hyperresponsiveness in a mouse model of neutrophilic asthma using a RORγt-specific siRNA. Pneumologie 2015. [DOI: 10.1055/s-0035-1548659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Lunding L, Webering S, Vock C, Schröder A, Raedler D, Schaub B, Fehrenbach H, Wegmann M. IL-37 requires IL18Rα and SIGIRR/IL-1R8 to ameliorate experimental allergic asthma in mice. Pneumologie 2015. [DOI: 10.1055/s-0035-1548656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Lunding L, Webering S, Vock C, Schröder A, Raedler D, Schaub B, Fehrenbach H, Wegmann M. IL-37 requires IL-18Rα and SIGIRR/IL-1R8 to diminish allergic airway inflammation in mice. Allergy 2015; 70:366-73. [PMID: 25557042 DOI: 10.1111/all.12566] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/22/2014] [Indexed: 12/25/2022]
Abstract
BACKGROUND Interleukin (IL) 37 has been described as a negative regulator of innate immunity, as it reduces the activation and cytokine production of different innate immune cells. Recently, results from the CLARA childhood asthma cohort suggested an implication of IL-37 for human asthma pathogenesis. This study aimed to investigate the effects of IL-37 on allergic airway inflammation in a mouse model of experimental asthma. METHODS Peripheral blood mononuclear cells (PBMCs) of children were cultured for 48 h (anti-CD3/anti-CD28 stimulation or unstimulated), and IL-37 concentrations in supernatants were determined. Wild-type, IL-18Rα-deficient ((-/-) ), and SIGIRR(-/-) C57BL/6 mice were sensitized to ovalbumin (OVA) and challenged with OVA aerosol to induce acute experimental asthma, and IL-37 was applied intranasally prior to each OVA challenge. Airway hyper-responsiveness (AHR), airway inflammation, cytokine levels in broncho-alveolar lavage fluid, and mucus production were determined. RESULTS IL-37 production of human PBMCs was significantly lower in allergic asthmatics vs healthy children. In wild-type mice, intranasal administration of IL-37 ablated allergic airway inflammation as well as cytokine production and subsequently diminished the hallmarks of experimental asthma including mucus hyperproduction and AHR. In contrast, local application of IL-37 produced none of these effects in mice lacking either IL18Rα or SIGIRR/IL-1R8. CONCLUSIONS This study demonstrates that IL-37 is able to ablate a TH2 cell-directed allergic inflammatory response and the hallmarks of experimental asthma in mice, suggesting that IL-37 may be critical for asthma pathogenesis. Furthermore, these data suggest a mode of action of IL-37 that involves IL18Rα as well as the orphan receptor SIGIRR/IL-1R8.
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Lunding L, Webering S, Vock C, Schröder A, Raedler D, Schaub B, Fehrenbach H, Wegmann M. IL-37 requires IL18Rα and SIGIRR to ameliorate experimental allergic asthma in mice. Pneumologie 2015. [DOI: 10.1055/s-0035-1544601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Webering S, Lunding L, Fehrenbach H, Wegmann M. Specific siRNA targeting RORγt inhibits airway inflammation and airway hyperresponsiveness in a mouse model of neutrophilic asthma. Pneumologie 2015. [DOI: 10.1055/s-0035-1544604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Webering S, Lunding L, Behrends J, Fehrenbach H, Wegmann M. RORγt-specific RNAi decreases allergic airway inflammation and airway hyperresponsiveness in a mouse model of neutrophilic asthma. Pneumologie 2014. [DOI: 10.1055/s-0034-1376774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Ramisch K, Bruenahl C, Karimi K, Wegmann M, Arck P. Prenatal stress alters lung development, increasing symptoms of allergic airway inflammation. J Reprod Immunol 2014. [DOI: 10.1016/j.jri.2013.12.103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Webering S, Lunding L, Vock C, Fehrenbach H, Wegmann M. α-melanocyte acts as an anti-inflammatory regulator in allergic bronchial asthma. Pneumologie 2014. [DOI: 10.1055/s-0034-1367906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Vock C, Wegmann M, Fehrenbach H. The TGF-ß antagonist Bambi impacts the expression of pro-inflammatory cytokines in a mouse model of allergic bronchial asthma. Pneumologie 2014. [DOI: 10.1055/s-0034-1367908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Lunding L, Webering S, Vock C, Behrends J, Hölscher C, Fehrenbach H, Wegmann M. IL-17 producing NK cells are suspected to be critical for the IL-17 dependent TLR-3 triggered aggravation of experimental asthma. Pneumologie 2014. [DOI: 10.1055/s-0034-1367781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Webering S, Lunding L, Fehrenbach H, Wegmann M. Treatment of allergic airway inflammation and airway hyperresponsiveness using RORγt specific RNAi. Pneumologie 2014. [DOI: 10.1055/s-0034-1367907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Voss M, Wonnenberg B, Kamyschnikow A, Honecker A, Herr C, Wegmann M, Menger M, Bals R, Beisswenger C. Differential function of IL-17A in cigarette smoke induced lung damage. Pneumologie 2014. [DOI: 10.1055/s-0033-1363141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Pereira HM, Ferrier S, Walters M, Geller GN, Jongman RHG, Scholes RJ, Bruford MW, Brummitt N, Butchart SHM, Cardoso AC, Coops NC, Dulloo E, Faith DP, Freyhof J, Gregory RD, Heip C, Hoft R, Hurtt G, Jetz W, Karp DS, McGeoch MA, Obura D, Onoda Y, Pettorelli N, Reyers B, Sayre R, Scharlemann JPW, Stuart SN, Turak E, Walpole M, Wegmann M. Essential Biodiversity Variables. Science 2013; 339:277-8. [DOI: 10.1126/science.1229931] [Citation(s) in RCA: 875] [Impact Index Per Article: 72.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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