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Zykova MV, Bratishko KA, Buyko EE, Azarkina LA, Ivanov VV, Mihalyov DA, Trofimova ES, Danilets MG, Ligacheva AA, Konstantinov AI, Ufandeev AA, Rabtsevich ES, Drygunova LA, Zima AP, Bashirov SR, Udut EV, Belousov MV. Coal-Derived Humic Substances: Insight into Chemical Structure Parameters and Biomedical Properties. Molecules 2024; 29:1530. [PMID: 38611808 PMCID: PMC11013056 DOI: 10.3390/molecules29071530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 03/23/2024] [Accepted: 03/26/2024] [Indexed: 04/14/2024] Open
Abstract
An investigation was carried out on humic substances (HSs) isolated from the coal of the Kansk-Achinsk basin (Krasnoyarsk Territory, Russia). The coal HSs demonstrate the main parameters of molecular structure inherent to this class of natural compounds. An assessment was performed for the chemical, microbiological, and pharmacological safety parameters, as well as the biological efficacy. The HS sample meets the safety requirements in microbiological purity, toxic metals content (lead, cadmium, mercury, arsenic), and radionuclides. The presence of 11 essential elements was determined. The absence of general, systemic toxicity, cytotoxicity, and allergenic properties was demonstrated. The coal HS sample was classified as a Class V hazard (low danger substances). High antioxidant and antiradical activities and immunotropic and cytoprotective properties were identified. The ability of the HS to inhibit hydroxyl radicals and superoxide anion radicals was revealed. Pronounced actoprotective and nootropic activities were also demonstrated in vivo. Intragastric administration of the HS sample resulted in the improvement of physical parameters in mice as assessed by the "swim exhaustion" test. Furthermore, intragastric administration in mice with cholinergic dysfunction led to a higher ability of animals with scopolamine-induced amnesia to form conditioned reflexes. These findings suggest that the studied HS sample is a safe and effective natural substance, making it suitable for use as a dietary bioactive supplement.
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Affiliation(s)
- Maria V. Zykova
- Pharmaceutical Faculty, Siberian State Medical University, 634050 Tomsk, Russia; (K.A.B.); (E.E.B.); (L.A.A.); (V.V.I.); (D.A.M.); (E.S.T.); (A.A.U.); (E.S.R.); (L.A.D.); (A.P.Z.); (S.R.B.); (E.V.U.); (M.V.B.)
| | - Kristina A. Bratishko
- Pharmaceutical Faculty, Siberian State Medical University, 634050 Tomsk, Russia; (K.A.B.); (E.E.B.); (L.A.A.); (V.V.I.); (D.A.M.); (E.S.T.); (A.A.U.); (E.S.R.); (L.A.D.); (A.P.Z.); (S.R.B.); (E.V.U.); (M.V.B.)
| | - Evgeny E. Buyko
- Pharmaceutical Faculty, Siberian State Medical University, 634050 Tomsk, Russia; (K.A.B.); (E.E.B.); (L.A.A.); (V.V.I.); (D.A.M.); (E.S.T.); (A.A.U.); (E.S.R.); (L.A.D.); (A.P.Z.); (S.R.B.); (E.V.U.); (M.V.B.)
| | - Lyudmila A. Azarkina
- Pharmaceutical Faculty, Siberian State Medical University, 634050 Tomsk, Russia; (K.A.B.); (E.E.B.); (L.A.A.); (V.V.I.); (D.A.M.); (E.S.T.); (A.A.U.); (E.S.R.); (L.A.D.); (A.P.Z.); (S.R.B.); (E.V.U.); (M.V.B.)
| | - Vladimir V. Ivanov
- Pharmaceutical Faculty, Siberian State Medical University, 634050 Tomsk, Russia; (K.A.B.); (E.E.B.); (L.A.A.); (V.V.I.); (D.A.M.); (E.S.T.); (A.A.U.); (E.S.R.); (L.A.D.); (A.P.Z.); (S.R.B.); (E.V.U.); (M.V.B.)
| | - Dmitrii A. Mihalyov
- Pharmaceutical Faculty, Siberian State Medical University, 634050 Tomsk, Russia; (K.A.B.); (E.E.B.); (L.A.A.); (V.V.I.); (D.A.M.); (E.S.T.); (A.A.U.); (E.S.R.); (L.A.D.); (A.P.Z.); (S.R.B.); (E.V.U.); (M.V.B.)
| | - Evgeniya S. Trofimova
- Pharmaceutical Faculty, Siberian State Medical University, 634050 Tomsk, Russia; (K.A.B.); (E.E.B.); (L.A.A.); (V.V.I.); (D.A.M.); (E.S.T.); (A.A.U.); (E.S.R.); (L.A.D.); (A.P.Z.); (S.R.B.); (E.V.U.); (M.V.B.)
- Goldberg Research Institute of Pharmacology and Regenerative Medicine, 634050 Tomsk, Russia; (M.G.D.); (A.A.L.)
| | - Marina G. Danilets
- Goldberg Research Institute of Pharmacology and Regenerative Medicine, 634050 Tomsk, Russia; (M.G.D.); (A.A.L.)
| | - Anastasia A. Ligacheva
- Goldberg Research Institute of Pharmacology and Regenerative Medicine, 634050 Tomsk, Russia; (M.G.D.); (A.A.L.)
| | - Andrey I. Konstantinov
- Department of Chemistry, Lomonosov Moscow State University, Leninskiye Gory 1-3, 119991 Moscow, Russia;
| | - Alexander A. Ufandeev
- Pharmaceutical Faculty, Siberian State Medical University, 634050 Tomsk, Russia; (K.A.B.); (E.E.B.); (L.A.A.); (V.V.I.); (D.A.M.); (E.S.T.); (A.A.U.); (E.S.R.); (L.A.D.); (A.P.Z.); (S.R.B.); (E.V.U.); (M.V.B.)
| | - Evgenia S. Rabtsevich
- Pharmaceutical Faculty, Siberian State Medical University, 634050 Tomsk, Russia; (K.A.B.); (E.E.B.); (L.A.A.); (V.V.I.); (D.A.M.); (E.S.T.); (A.A.U.); (E.S.R.); (L.A.D.); (A.P.Z.); (S.R.B.); (E.V.U.); (M.V.B.)
- Tomsk State University, 634050 Tomsk, Russia
| | - Larisa A. Drygunova
- Pharmaceutical Faculty, Siberian State Medical University, 634050 Tomsk, Russia; (K.A.B.); (E.E.B.); (L.A.A.); (V.V.I.); (D.A.M.); (E.S.T.); (A.A.U.); (E.S.R.); (L.A.D.); (A.P.Z.); (S.R.B.); (E.V.U.); (M.V.B.)
| | - Anastasia P. Zima
- Pharmaceutical Faculty, Siberian State Medical University, 634050 Tomsk, Russia; (K.A.B.); (E.E.B.); (L.A.A.); (V.V.I.); (D.A.M.); (E.S.T.); (A.A.U.); (E.S.R.); (L.A.D.); (A.P.Z.); (S.R.B.); (E.V.U.); (M.V.B.)
| | - Sergey R. Bashirov
- Pharmaceutical Faculty, Siberian State Medical University, 634050 Tomsk, Russia; (K.A.B.); (E.E.B.); (L.A.A.); (V.V.I.); (D.A.M.); (E.S.T.); (A.A.U.); (E.S.R.); (L.A.D.); (A.P.Z.); (S.R.B.); (E.V.U.); (M.V.B.)
| | - Elena V. Udut
- Pharmaceutical Faculty, Siberian State Medical University, 634050 Tomsk, Russia; (K.A.B.); (E.E.B.); (L.A.A.); (V.V.I.); (D.A.M.); (E.S.T.); (A.A.U.); (E.S.R.); (L.A.D.); (A.P.Z.); (S.R.B.); (E.V.U.); (M.V.B.)
| | - Mikhail V. Belousov
- Pharmaceutical Faculty, Siberian State Medical University, 634050 Tomsk, Russia; (K.A.B.); (E.E.B.); (L.A.A.); (V.V.I.); (D.A.M.); (E.S.T.); (A.A.U.); (E.S.R.); (L.A.D.); (A.P.Z.); (S.R.B.); (E.V.U.); (M.V.B.)
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Grander C, Meyer M, Steinacher D, Claudel T, Hausmann B, Pjevac P, Grabherr F, Oberhuber G, Grander M, Brigo N, Jukic A, Schwärzler J, Weiss G, Adolph TE, Trauner M, Tilg H. 24-Norursodeoxycholic acid ameliorates experimental alcohol-related liver disease and activates hepatic PPARγ. JHEP Rep 2023; 5:100872. [PMID: 37818230 PMCID: PMC10561126 DOI: 10.1016/j.jhepr.2023.100872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 05/23/2023] [Accepted: 07/12/2023] [Indexed: 10/12/2023] Open
Abstract
Background & Aims Alcohol-related liver disease (ALD) is a global healthcare challenge with limited treatment options. 24-Norursodeoxycholic acid (NorUDCA) is a synthetic bile acid with anti-inflammatory properties in experimental and human cholestatic liver diseases. In the present study, we explored the efficacy of norUDCA in experimental ALD. Methods NorUDCA was tested in a preventive and therapeutic setting in an experimental ALD model (Lieber-DeCarli diet enriched with ethanol). Liver disease was phenotypically evaluated using histology and biochemical methods, and anti-inflammatory properties and peroxisome proliferator-activated receptor gamma activation by norUDCA were evaluated in cellular model systems. Results NorUDCA administration ameliorated ethanol-induced liver injury, reduced hepatocyte death, and reduced the expression of hepatic pro-inflammatory cytokines including tumour necrosis factor (Tnf), Il-1β, Il-6, and Il-10. NorUDCA shifted hepatic macrophages towards an anti-inflammatory M2 phenotype. Further, norUDCA administration altered the composition of the intestinal microbiota, specifically increasing the abundance of Roseburia, Enterobacteriaceae, and Clostridum spp. In a therapeutic model, norUDCA also ameliorated ethanol-induced liver injury. Moreover, norUDCA suppressed lipopolysaccharide-induced IL-6 expression in human peripheral blood mononuclear cells and evoked peroxisome proliferator-activated receptor gamma activation. Conclusions NorUDCA ameliorated experimental ALD, protected against hepatic inflammation, and affected gut microbial commensalism. NorUDCA could serve as a novel therapeutic agent in the future management of patients with ALD. Impact and implications Alcohol-related liver disease is a global healthcare concern with limited treatment options. 24-Norursodeoxycholic acid (NorUDCA) is a modified bile acid, which was proven to be effective in human cholestatic liver diseases. In the present study, we found a protective effect of norUDCA in experimental alcoholic liver disease. For patients with ALD, norUDCA could be a potential new treatment option.
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Affiliation(s)
- Christoph Grander
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology and Metabolism, Medical University Innsbruck, Innsbruck, Austria
| | - Moritz Meyer
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology and Metabolism, Medical University Innsbruck, Innsbruck, Austria
| | - Daniel Steinacher
- Hans Popper Laboratory of Molecular Hepatology, Department of Internal Medicine III, Division of Gastroenterology and Hepatology, Medical University of Vienna, Vienna, Austria
| | - Thierry Claudel
- Hans Popper Laboratory of Molecular Hepatology, Department of Internal Medicine III, Division of Gastroenterology and Hepatology, Medical University of Vienna, Vienna, Austria
| | - Bela Hausmann
- Joint Microbiome Facility of the Medical University of Vienna, The University of Vienna, Vienna, Austria
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Petra Pjevac
- Joint Microbiome Facility of the Medical University of Vienna, The University of Vienna, Vienna, Austria
- Division of Microbial Ecology, Department of Microbiology and Ecosystem Science, Centre for Microbiology and Environmental Systems Science, University of Vienna, Vienna, Austria
| | - Felix Grabherr
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology and Metabolism, Medical University Innsbruck, Innsbruck, Austria
| | - Georg Oberhuber
- INNPATH, Tirol-Kliniken University Hospital Innsbruck, Innsbruck, Austria
| | - Manuel Grander
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University Innsbruck, Innsbruck, Austria
| | - Natascha Brigo
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University Innsbruck, Innsbruck, Austria
| | - Almina Jukic
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology and Metabolism, Medical University Innsbruck, Innsbruck, Austria
| | - Julian Schwärzler
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology and Metabolism, Medical University Innsbruck, Innsbruck, Austria
| | - Günter Weiss
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University Innsbruck, Innsbruck, Austria
| | - Timon E. Adolph
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology and Metabolism, Medical University Innsbruck, Innsbruck, Austria
| | - Michael Trauner
- Hans Popper Laboratory of Molecular Hepatology, Department of Internal Medicine III, Division of Gastroenterology and Hepatology, Medical University of Vienna, Vienna, Austria
| | - Herbert Tilg
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology and Metabolism, Medical University Innsbruck, Innsbruck, Austria
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Li Q, Wang Y, Shi L, Wang Q, Yang G, Deng L, Tian Y, Hua X, Yuan X. Arginase-1 promotes lens epithelial-to-mesenchymal transition in different models of anterior subcapsular cataract. Cell Commun Signal 2023; 21:236. [PMID: 37723490 PMCID: PMC10506332 DOI: 10.1186/s12964-023-01210-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 06/30/2023] [Indexed: 09/20/2023] Open
Abstract
BACKGROUND Arginase-1 (ARG1) promotes collagen synthesis and cell proliferation. ARG1 is highly expressed in various tumour cells. The mechanisms of ARG1 in epithelial-to-mesenchymal transition (EMT)-associated cataracts were studied herein. METHODS C57BL/6 mice, a human lens epithelial cell line (HLEC-SRA01/04), and human lens capsule samples were used in this study. The right lens anterior capsule of the mouse eye was punctured through the central cornea with a 26-gauge hypodermic needle. Human lens epithelial cells (HLECs) were transfected with ARG1-targeted (siARG1) or negative control siRNA (siNC). For gene overexpression, HLECs were transfected with a plasmid bearing the ARG1 coding sequence or an empty vector. Medium containing 0.2% serum with or without transforming growth factor beta-2 (TGF-β2) was added for 6 or 24 h to detect mRNA or protein, respectively. The expression of related genes was measured by quantitative real-time polymerase chain reaction (RT-qPCR), western blotting, and immunohistochemical staining. Transwell assays and wound healing assays were used to determine cell migration. Cell proliferation, superoxide levels, nitric oxide (NO) levels, and arginase activity were estimated using Cell Counting Kit-8 assays, a superoxide assay kit, an NO assay kit, and an arginase activity kit. RESULTS ARG1, alpha-smooth muscle actin (α-SMA), fibronectin, and Ki67 expression increased after lens capsular injury, while zonula occludens-1 (ZO-1) expression decreased. Fibronectin and collagen type I alpha1 chain (collagen 1A1) expression increased, and cell migration increased significantly in ARG1-overexpressing HLECs compared with those transfected with an empty vector after TGF-β2 treatment. These effects were reversed by ARG1 knockdown. The arginase-related pathway plays an important role in EMT. mRNAs of enzymes of the arginase-related pathway were highly expressed after ARG1 overexpression. ARG1 knockdown suppressed these expression changes. Numidargistat (CB-1158) dihydrochloride (CB-1158), an ARG1 inhibitor, suppressed TGF-β2-induced anterior subcapsular cataract (ASC) by reducing the proliferation of lens epithelial cells (LECs) and decreasing fibronectin, α-SMA, collagen 1A1, and vimentin expression. Compared with that in nonanterior subcapsular cataract (non-ASC) patients, the expression of ARG1, collagen 1A1, vimentin, fibronectin, and Ki67 was markedly increased in ASC patients. CONCLUSIONS ARG1 can regulate EMT in EMT-associated cataracts. Based on the pathogenesis of ASC, these findings are expected to provide new therapeutic strategies for patients.
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Affiliation(s)
- Qingyu Li
- Department of Cataract, Tianjin Eye Hospital, Tianjin, China
- Tianjin Key Lab of Ophthalmology and Visual Science, Tianjin, China
| | - Yuchuan Wang
- Department of Cataract, Tianjin Eye Hospital, Tianjin, China
- Tianjin Key Lab of Ophthalmology and Visual Science, Tianjin, China
| | - Luoluo Shi
- Department of Cataract, Tianjin Eye Hospital, Tianjin, China
- Tianjin Key Lab of Ophthalmology and Visual Science, Tianjin, China
| | - Qing Wang
- Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, China
- Heze Medical College, Heze, Shandong, China
| | - Guang Yang
- School of Microelectronics, Tianjin University, Tianjin, China
| | - Lin Deng
- Department of Cataract, Tianjin Eye Hospital, Tianjin, China
- Tianjin Key Lab of Ophthalmology and Visual Science, Tianjin, China
| | - Ye Tian
- Department of Cataract, Tianjin Eye Hospital, Tianjin, China
- Tianjin Key Lab of Ophthalmology and Visual Science, Tianjin, China
| | - Xia Hua
- Tianjin Aier Eye Hospital, Tianjin University, Tianjin, China.
| | - Xiaoyong Yuan
- Department of Cataract, Tianjin Eye Hospital, Tianjin, China.
- Tianjin Key Lab of Ophthalmology and Visual Science, Tianjin, China.
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Brigo N, Neumaier E, Pfeifhofer-Obermair C, Grubwieser P, Engl S, Berger S, Seifert M, Reinstadler V, Oberacher H, Weiss G. Timing of Interleukin-4 Stimulation of Macrophages Determines Their Anti-Microbial Activity during Infection with Salmonella enterica Serovar Typhimurium. Cells 2023; 12:1164. [PMID: 37190073 PMCID: PMC10137269 DOI: 10.3390/cells12081164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 04/06/2023] [Accepted: 04/12/2023] [Indexed: 05/17/2023] Open
Abstract
Priming of macrophages with interferon-gamma (IFNγ) or interleukin-4 (IL-4) leads to polarisation into pro-inflammatory or anti-inflammatory subtypes, which produce key enzymes such as inducible nitric oxide synthase (iNOS) and arginase 1 (ARG1), respectively, and in this way determine host responses to infection. Importantly, L-arginine is the substrate for both enzymes. ARG1 upregulation is associated with increased pathogen load in different infection models. However, while differentiation of macrophages with IL-4 impairs host resistance to the intracellular bacterium Salmonella enterica serovar Typhimurium (S.tm), little is known on the effects of IL-4 on unpolarised macrophages during infection. Therefore, bone-marrow-derived macrophages (BMDM) from C57BL/6N, Tie2Cre+/-ARG1fl/fl (KO), Tie2Cre-/-ARG1fl/fl (WT) mice were infected with S.tm in the undifferentiated state and then stimulated with IL-4 or IFNγ. In addition, BMDM of C57BL/6N mice were first polarised upon stimulation with IL-4 or IFNγ and then infected with S.tm. Interestingly, in contrast to polarisation of BMDM with IL-4 prior to infection, treatment of non-polarised S.tm-infected BMDM with IL-4 resulted in improved infection control whereas stimulation with IFNγ led to an increase in intracellular bacterial numbers compared to unstimulated controls. This effect of IL-4 was paralleled by decreased ARG1 levels and increased iNOS expression. Furthermore, the L-arginine pathway metabolites ornithine and polyamines were enriched in unpolarised cells infected with S.tm and stimulated with IL-4. Depletion of L-arginine reversed the protective effect of IL-4 toward infection control. Our data show that stimulation of S.tm-infected macrophages with IL-4 reduced bacterial multiplication via metabolic re-programming of L-arginine-dependent pathways.
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Affiliation(s)
- Natascha Brigo
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Emely Neumaier
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Christa Pfeifhofer-Obermair
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Philipp Grubwieser
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Sabine Engl
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Sylvia Berger
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Markus Seifert
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Vera Reinstadler
- Institute of Legal Medicine and Core Facility Metabolomics, Medical University of Innsbruck, Muellerstrasse 44, 6020 Innsbruck, Austria
| | - Herbert Oberacher
- Institute of Legal Medicine and Core Facility Metabolomics, Medical University of Innsbruck, Muellerstrasse 44, 6020 Innsbruck, Austria
| | - Günter Weiss
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
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Brigo N, Grubwieser P, Theurl I, Nairz M, Weiss G, Pfeifhofer-Obermair C. Continuous Measurement of Reactive Oxygen Species Formation in Bacteria-infected Bone Marrow-derived Macrophages Using a Fluorescence Plate Reader. Bio Protoc 2023; 13:e4604. [PMID: 36816989 PMCID: PMC9909312 DOI: 10.21769/bioprotoc.4604] [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: 07/05/2022] [Revised: 08/31/2022] [Accepted: 01/10/2023] [Indexed: 02/04/2023] Open
Abstract
Macrophages are at the center of innate immunity and are the main target cells of the intracellular pathogen Salmonella enterica serovar Typhi. The production of reactive oxygen and nitrogen species (ROS/RNS) is the host's early response to invading microbes, as oxidative stress is highly toxic for bacteria. Adequate ROS/RNS production in infected macrophages is critical for the clearance of intracellular pathogens; this is achieved by several enzymes, including inducible NADPH phagocyte oxidase (NOX) and nitric oxide synthase (iNOS), respectively. The pro-inflammatory cytokine interferon gamma (IFNγ), primarily produced by activated natural killer cells and T-helper cells type 1, is a potent inducer of iNOS. Therefore, it is crucial for infection control through oxidative microbicidal activity. To characterize the early oxidative stress response via ROS formation, which is critical for the reduction of Salmonella proliferation within macrophages, we established an in vitro model of murine macrophages infected with Salmonella enterica serovar Typhimurium (S.tm). This serovar induces a systemic infection in mice that is frequently used as a model for typhoid fever, which, in human subjects, is caused by Salmonella Typhi. We generated bone marrow-derived macrophages (BMDM) from C57BL/6N wildtype mice using macrophage colony-stimulating factor (M-CSF) stimulation for six days. Thereafter, we infected BMDM withS. tm for one hour. Shortly before infection, cells were stained with CellROXTM Deep Red reagent. In its reduced form, CellROXTM is non-fluorescent. As a result of oxidation by ROS, this reagent exhibits strong fluorescence and persists within the cells. Subsequently, changes as a result of the oxidative stress response can be measured with a TECAN Spark microplate reader over time. We designed this protocol to measure oxidative stress in macrophages through the course of an infection with an intracellular bacterium. The protocol has several advantages over established techniques. First, it allows to continuously monitor and quantify ROS production in living cells from the very start of the infection to the final clearance of the intracellular pathogen. Second, this protocol enables efficient ROS detection without stressing the cells by detaching or staining procedures. Graphical abstract.
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Affiliation(s)
- Natascha Brigo
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | - Philipp Grubwieser
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | - Igor Theurl
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | - Manfred Nairz
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | - Günter Weiss
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
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Duan B, Liu R, Shi Y, Sun A, Tang Z, Wang C, Hu J. Lactobacillus plantarum synergistically regulates M1 macrophage polarization in resistance against Salmonella enterica serovar Typhimurium infection. Front Microbiol 2022; 13:933550. [PMID: 36325023 PMCID: PMC9620862 DOI: 10.3389/fmicb.2022.933550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Accepted: 09/20/2022] [Indexed: 11/22/2022] Open
Abstract
Macrophage polarization affects the progression of pathogenic bacterial infections. Lactobacillus is widely used to interact with macrophages and to exert specific immunomodulatory activities. In this study, we investigated the regulation of macrophage polarization against Salmonella enterica serotype Typhimurium (STM) by Lactobacillus plantarum JL01 (LP), to explore prevention and treatment strategies for salmonellosis. We assessed the in vitro differential polarization of RAW 264.7 macrophages and mouse bone marrow macrophages (BMMs) by LP against STM, by measuring protein and cytokine levels, and bactericidal activity. In addition, we assessed the protective effects of LP against STM by evaluating weight loss, survival, the burden of STM in tissues, the polarization of macrophages in the spleen and mesenteric lymph nodes (MLNs), intestinal histopathology, and cytokine production. LP slightly affected the polarization of RAW 264.7, a slight M1-skewing. LP promoted the RAW 264.7 bactericidal activity against STM. In BMMs, M1 polarization induced by LP was significantly lower than the M1-positive phenotype. The combination of LP with M1 synergistically improved M1 polarization and bactericidal activity against STM compared to the individual effects. LP promoted the activation of the NF-κB signaling pathway. Supplementation with the NF-κB inhibitor decreased M1 polarization induced by LP. We observed the protective effect of LP against STM in C57BL/6 mice, through a decrease in weight loss, mortality, STM burden in the liver, and promotion of macrophage M1 and M2 polarization in the spleen and MLNs; though M1 was higher, it did not cause inflammatory damage. In summary, LP can synergistically promote M1 polarization in combination with the M1 phenotype through the NF-κB signaling pathway and increases resistance against S. Typhimurium infection. These findings will lay the foundation for the prevention and treatment of S. Typhimurium infections in the future.
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Affiliation(s)
- Bingjie Duan
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
- Jilin Provincial Key Laboratory of Animal Microecology and Health Breeding, Changchun, China
- Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Changchun, China
| | - Ruihan Liu
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
- Jilin Provincial Key Laboratory of Animal Microecology and Health Breeding, Changchun, China
- Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Changchun, China
| | - Yumeng Shi
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
- Jilin Provincial Key Laboratory of Animal Microecology and Health Breeding, Changchun, China
- Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Changchun, China
| | - Anqi Sun
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
- Jilin Provincial Key Laboratory of Animal Microecology and Health Breeding, Changchun, China
- Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Changchun, China
| | - Zhengxu Tang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
- Jilin Provincial Key Laboratory of Animal Microecology and Health Breeding, Changchun, China
- Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Changchun, China
| | - Chunfeng Wang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
- Jilin Provincial Key Laboratory of Animal Microecology and Health Breeding, Changchun, China
- Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Changchun, China
- Chunfeng Wang
| | - Jingtao Hu
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
- Jilin Provincial Key Laboratory of Animal Microecology and Health Breeding, Changchun, China
- Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Changchun, China
- *Correspondence: Jingtao Hu
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Luis LB, Ana GT, Carlos GE, Abraham GG, Iris EG, Martha ML, Vianney ON. Salmonella Promotes Its Own Survival in B Cells by Inhibiting Autophagy. Cells 2022; 11:cells11132061. [PMID: 35805144 PMCID: PMC9266210 DOI: 10.3390/cells11132061] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 06/18/2022] [Accepted: 06/27/2022] [Indexed: 02/01/2023] Open
Abstract
Salmonella is a Gram-negative bacterium known to be the major cause of gastrointestinal diseases and systemic infections. During infection of murine B cells, Salmonella activates the PI3K/Akt pathway through its effector, SopB. This signaling pathway induces the downregulation of NLRC4 transcription, resulting in reduced secretion of IL-1β. Thus, Salmonella-infected B cells do not progress to pyroptosis; consequently, the bacteria can survive inside these cells. However, the mechanism by which Salmonella evades the control of B cells has not yet been elucidated. In this study, we found that SopB activates mTORC1, which is necessary for bacterial survival, since B cells cultured with the mTORC1 inhibitor rapamycin and B cells lacking raptor can control Salmonella infection. A similar result was observed in B cells when they were infected with the Salmonella SopB mutant (Δsopb). Salmonella also promoted the phosphorylation of the ULK1 complex at serine 757 (Ser757) by mTORC1, resulting in decreased levels of LC3-II in infected B cells. In this study, we did not observe these results when B cells were infected with Δsopb Salmonella. Our results demonstrated that Salmonella survival within B cells depends on the inhibition of autophagy by mTORC1 activation.
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Affiliation(s)
- Lopez-Bailon Luis
- Departamento y Posgrado en Inmunología, Escuela Nacional de Ciencias Biológicas del Instituto Politécnico Nacional (ENCB-IPN), Mexico 11350, Mexico; (L.-B.L.); (E.-G.I.); (M.-L.M.)
| | - Gonzalez-Telona Ana
- Departamento de Biomedicina Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico 07360, Mexico; (G.-T.A.); (G.-E.C.); (G.-G.A.)
| | - Galán-Enríquez Carlos
- Departamento de Biomedicina Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico 07360, Mexico; (G.-T.A.); (G.-E.C.); (G.-G.A.)
| | - García-Gil Abraham
- Departamento de Biomedicina Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico 07360, Mexico; (G.-T.A.); (G.-E.C.); (G.-G.A.)
| | - Estrada-García Iris
- Departamento y Posgrado en Inmunología, Escuela Nacional de Ciencias Biológicas del Instituto Politécnico Nacional (ENCB-IPN), Mexico 11350, Mexico; (L.-B.L.); (E.-G.I.); (M.-L.M.)
| | - Moreno-Lafont Martha
- Departamento y Posgrado en Inmunología, Escuela Nacional de Ciencias Biológicas del Instituto Politécnico Nacional (ENCB-IPN), Mexico 11350, Mexico; (L.-B.L.); (E.-G.I.); (M.-L.M.)
| | - Ortiz-Navarrete Vianney
- Departamento de Biomedicina Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico 07360, Mexico; (G.-T.A.); (G.-E.C.); (G.-G.A.)
- Correspondence:
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8
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Dünnwald T, Paglia G, Weiss G, Denti V, Faulhaber M, Schobersberger W, Wackerhage H. High Intensity Concentric-Eccentric Exercise Under Hypoxia Changes the Blood Metabolome of Trained Athletes. Front Physiol 2022; 13:904618. [PMID: 35812339 PMCID: PMC9260056 DOI: 10.3389/fphys.2022.904618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 06/01/2022] [Indexed: 11/19/2022] Open
Abstract
The aim of this study was to determine alterations of the metabolome in blood plasma in response to concentric-eccentric leg exercise performed at a simulated altitude of 3,500 m. To do so, we recruited 11 well-trained subjects and performed an untargeted metabolomics analysis of plasma samples obtained before, 20 min after as well as on day 8 after five sets of maximal, concentric-eccentric leg exercises that lasted 90 s each. We identified and annotated 115 metabolites through untargeted liquid chromatography-mass spectrometry metabolomics and used them to further calculate 20 sum/ratio of metabolites. A principal component analysis (PCA) revealed differences in-between the overall metabolome at rest and immediately after exercise. Interestingly, some systematic changes of relative metabolite concentrations still persisted on day 8 after exercise. The first two components of the PCA explained 34% of the relative concentrations of all identified metabolites analyzed together. A volcano plot indicates that 35 metabolites and two metabolite ratios were significantly changed directly after exercise, such as metabolites related to carbohydrate and TCA metabolism. Moreover, we observed alterations in the relative concentrations of amino acids (e.g., decreases of valine, leucine and increases in alanine) and purines (e.g., increases in hypoxanthine, xanthine and uric acid). In summary, high intensity concentric-eccentric exercise performed at simulated altitude systematically changed the blood metabolome in trained athletes directly after exercise and some relative metabolite concentrations were still changed on day 8. The importance of that persisting metabolic alterations on exercise performance should be studied further.
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Affiliation(s)
- Tobias Dünnwald
- Institute for Sports Medicine, Alpine Medicine and Health Tourism (ISAG), UMIT TIROL, Private University for Health Sciences, Medical Informatics and Technology, Hall in Tirol, Austria
- *Correspondence: Tobias Dünnwald,
| | - Giuseppe Paglia
- School of Medicine and Surgery, University of Milano-Bicocca, Vedano al Lambro (MB), Italy
| | - Günter Weiss
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | - Vanna Denti
- School of Medicine and Surgery, University of Milano-Bicocca, Vedano al Lambro (MB), Italy
| | - Martin Faulhaber
- Department of Sport Science, University of Innsbruck, Innsbruck, Austria
| | - Wolfgang Schobersberger
- Institute for Sports Medicine, Alpine Medicine and Health Tourism (ISAG), UMIT TIROL, Private University for Health Sciences, Medical Informatics and Technology, Hall in Tirol, Austria
- Tirol-Kliniken GmbH, Innsbruck, Austria
| | - Henning Wackerhage
- Department of Sport and Health Sciences, Technische Universität München, Munich, Germany
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9
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Brigo N, Pfeifhofer-Obermair C, Demetz E, Tymoszuk P, Weiss G. Flow Cytometric Characterization of Macrophages Infected in vitro with Salmonella enterica Serovar Typhimurium Expressing Red Fluorescent Protein. Bio Protoc 2022; 12:e4440. [PMID: 35799903 PMCID: PMC9243511 DOI: 10.21769/bioprotoc.4440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 04/19/2022] [Indexed: 12/29/2022] Open
Abstract
Macrophages are important for host defense against intracellular pathogens like Salmonella and can be differentiated into two major subtypes. M1 macrophages, which are pro-inflammatory and induce antimicrobial immune effector mechanisms, including the expression of inducible nitric oxide synthase (iNOS), and M2 macrophages, which exert anti-inflammatory functions and express arginase 1 (ARG1). Through the process of phagocytosis, macrophages contain, engulf, and eliminate bacteria. Therefore, they are one of the first lines of defense against Salmonella. Infection with Salmonella leads to gastrointestinal disorders and systemic infection, termed typhoid fever. For further characterization of infection pathways, we established an in vitro model where macrophages are infected with the mouse Salmonella typhi correlate Salmonella enterica serovar Typhimurium ( S. tm), which additionally expresses red fluorescent protein (RFP). This allows us to clearly characterize macrophages that phagocytosed the bacteria, using multi-color flow cytometry. In this protocol, we focus on the in vitro characterization of pro- and anti-inflammatory macrophages displaying red fluorescent protein-expressing Salmonella enterica serovar Typhimurium, by multi-color flow cytometry.
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Affiliation(s)
- Natascha Brigo
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | - Christa Pfeifhofer-Obermair
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
,
*For correspondence:
| | - Egon Demetz
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | | | - Günter Weiss
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
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10
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Lee S, Park J, Kim S, Ok J, Yoo JI, Kim YS, Ahn Y, Kim TI, Ko HC, Lee JY. High-Performance Implantable Bioelectrodes with Immunocompatible Topography for Modulation of Macrophage Responses. ACS NANO 2022; 16:7471-7485. [PMID: 35438981 DOI: 10.1021/acsnano.1c10506] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Implantable bioelectrodes enable precise recording or stimulation of electrical signals with living tissues in close contact. However, their performance is frequently compromised owing to inflammatory tissue reactions, which macrophages either induce or resolve by polarizing to an inflammatory (M1) or noninflammatory (M2) phenotype, respectively. Thus, we aimed to fabricate biocompatible and functional implantable conductive polymer bioelectrodes with optimal topography for the modulation of macrophage responses. To this end, we produced heparin-doped polypyrrole (PPy/Hep) electrodes of different surface roughness, with Ra values from 5.5 to 17.6 nm, by varying the charge densities during electrochemical synthesis. In vitro culture revealed that macrophages on rough PPy/Hep electrodes preferentially polarized to noninflammatory phenotypes. In particular, PPy/Hep-900 (Ra = 14 nm) was optimal with respect to electrochemical properties and the suppression of inflammatory M1 polarization. In vivo implantation indicated that PPy/Hep-900 significantly reduced macrophage recruitment, suppressed inflammatory polarization, and mitigated fibrotic tissue formation. In addition, the implanted PPy/Hep-900 electrodes could successfully record electrocardiographic signals for up to 10 days without substantial decreases in sensitivity, while other electrodes substantially lost their signal sensitivity during implantation. Altogether, we demonstrate that modulating the surface features of PPy/Hep can benefit the design and applications of high-performance and high-biocompatibility bioelectrodes.
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Affiliation(s)
- Sanghun Lee
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Junggeon Park
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Semin Kim
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Jehyung Ok
- School of Chemical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Jung Il Yoo
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Yong Sook Kim
- Biomedical Research Institute, Chonnam National University Hospital, Gwangju, 61469, Republic of Korea
- Cell Regeneration Research Center, Chonnam National University Hospital, Gwangju, 61469, Republic of Korea
| | - Youngkeun Ahn
- Biomedical Research Institute, Chonnam National University Hospital, Gwangju, 61469, Republic of Korea
- Cell Regeneration Research Center, Chonnam National University Hospital, Gwangju, 61469, Republic of Korea
| | - Tae-Il Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Heung Cho Ko
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Jae Young Lee
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
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11
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Mitochondrial Respiration in Response to Iron Deficiency Anemia: Comparison of Peripheral Blood Mononuclear Cells and Liver. Metabolites 2022; 12:metabo12030270. [PMID: 35323713 PMCID: PMC8950937 DOI: 10.3390/metabo12030270] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 03/14/2022] [Accepted: 03/18/2022] [Indexed: 02/04/2023] Open
Abstract
Iron is an essential component for metabolic processes, including oxygen transport within hemoglobin, tricarboxylic acid (TCA) cycle activity, and mitochondrial energy transformation. Iron deficiency can thus lead to metabolic dysfunction and eventually result in iron deficiency anemia (IDA), which affects approximately 1.5 billion people worldwide. Using a rat model of IDA induced by phlebotomy, we studied the effects of IDA on mitochondrial respiration in peripheral blood mononuclear cells (PBMCs) and the liver. Furthermore, we evaluated whether the mitochondrial function evaluated by high-resolution respirometry in PBMCs reflects corresponding alterations in the liver. Surprisingly, mitochondrial respiratory capacity was increased in PBMCs from rats with IDA compared to the controls. In contrast, mitochondrial respiration remained unaffected in livers from IDA rats. Of note, citrate synthase activity indicated an increased mitochondrial density in PBMCs, whereas it remained unchanged in the liver, partly explaining the different responses of mitochondrial respiration in PBMCs and the liver. Taken together, these results indicate that mitochondrial function determined in PBMCs cannot serve as a valid surrogate for respiration in the liver. Metabolic adaptions to iron deficiency resulted in different metabolic reprogramming in the blood cells and liver tissue.
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12
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Chu X, Di C, Chang P, Li L, Feng Z, Xiao S, Yan X, Xu X, Li H, Qi R, Gong H, Zhao Y, Xiao F, Chang Z. Lactylated Histone H3K18 as a Potential Biomarker for the Diagnosis and Predicting the Severity of Septic Shock. Front Immunol 2022; 12:786666. [PMID: 35069560 PMCID: PMC8773995 DOI: 10.3389/fimmu.2021.786666] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 12/16/2021] [Indexed: 12/28/2022] Open
Abstract
Objective To date, there are no studies regarding the lactylation profile and its role in critically ill patients. Thus, we aimed to examine expression of histone H3 lysine 18 (H3K18) lactylation and its role in patients with septic shock. Methods Thirteen healthy volunteers and 35 critically ill patients from the Department of Surgical Intensive Care Medicine, Beijing Hospital were enrolled in our study. Baseline information and clinical outcomes were obtained prospectively. Lactylation levels of all proteins and H3K18 from peripheral blood mononuclear (PBMC) were determined by western blotting and serum levels of inflammatory cytokines by flow cytometry. Arginase-1 (Arg1) and Krüppel-like factor-4 (Klf4) mRNA expression was evaluated by quantitative real-time PCR (qRT-PCR). Results Lactylation was found to be an all-protein post-translational modification and was detected in PBMCs from both healthy volunteers and critically ill patients, with a significantly higher relative density in shock patients (t=2.172, P=0.045). H3K18la was expressed in all subjects, including healthy volunteers, with the highest level in septic shock patients (compared with non-septic shock patients, critically ill without shock patients and healthy volunteers P=0.033, 0.000 and 0.000, respectively). Furthermore, H3K18la protein expression correlated positively with APACHE II scores, SOFA scores on day 1, ICU stay, mechanical ventilation time and serum lactate (ρ=0.42, 0.63, 0.39, 0.51 and 0.48, respectively, ρ=0.012, 0.000, 0.019, 0.003 and 0.003, respectively). When we matched patients with septic shock and with non-septic shock according to severity, we found higher H3K18la levels in the former group (t=-2.208, P =0.040). Moreover, H3K18la exhibited a close correlation with procalcitonin levels (ρ=0.71, P=0.010). Patients with high H3K18la expression showed higher IL-2, IL-5, IL-6, IL-8, IL-10, IL-17, IFN-α levels (ρ=0.33, 0.37, 0.62, 0.55, 0.65, 0.49 and 0.374 respectively, P=0.024, 0.011, 0.000, 0.000, 0.000 and 0.000 respectively). H3K18la expression also displayed a positive correlation with the level of Arg1 mRNA (ρ=0.561, P=0.005). Conclusions Lactylation is an all-protein post-translational modification occurring in both healthy subjects and critically ill patients. H3K18la may reflect the severity of critical illness and the presence of infection. H3K18la might mediate inflammatory cytokine expression and Arg1 overexpression and stimulate the anti-inflammatory function of macrophages in sepsis.
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Affiliation(s)
- Xin Chu
- Department of Surgical Intensive Care Medicine, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Chenyi Di
- Department of Surgical Intensive Care Medicine, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Panpan Chang
- Trauma Center, Department of Orthopaedics and Traumatology, Peking University People's Hospital, Beijing, China
| | - Lina Li
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Zhe Feng
- Department of Surgical Intensive Care Medicine, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Shirou Xiao
- Department of Surgical Intensive Care Medicine, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Xiaoyu Yan
- Department of Surgical Intensive Care Medicine, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Xiaodong Xu
- Department of Haematology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Hexin Li
- Clinical Biobank, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Ruomei Qi
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
| | - Huan Gong
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
| | - Yanyang Zhao
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
| | - Fei Xiao
- Clinical Biobank, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Zhigang Chang
- Department of Surgical Intensive Care Medicine, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
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13
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Fischer C, Volani C, Komlódi T, Seifert M, Demetz E, Valente de Souza L, Auer K, Petzer V, von Raffay L, Moser P, Gnaiger E, Weiss G. Dietary Iron Overload and Hfe-/- Related Hemochromatosis Alter Hepatic Mitochondrial Function. Antioxidants (Basel) 2021; 10:antiox10111818. [PMID: 34829689 PMCID: PMC8615072 DOI: 10.3390/antiox10111818] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/04/2021] [Accepted: 11/13/2021] [Indexed: 12/13/2022] Open
Abstract
Iron is an essential co-factor for many cellular metabolic processes, and mitochondria are main sites of utilization. Iron accumulation promotes production of reactive oxygen species (ROS) via the catalytic activity of iron species. Herein, we investigated the consequences of dietary and genetic iron overload on mitochondrial function. C57BL/6N wildtype and Hfe-/- mice, the latter a genetic hemochromatosis model, received either normal diet (ND) or high iron diet (HI) for two weeks. Liver mitochondrial respiration was measured using high-resolution respirometry along with analysis of expression of specific proteins and ROS production. HI promoted tissue iron accumulation and slightly affected mitochondrial function in wildtype mice. Hepatic mitochondrial function was impaired in Hfe-/- mice on ND and HI. Compared to wildtype mice, Hfe-/- mice on ND showed increased mitochondrial respiratory capacity. Hfe-/- mice on HI showed very high liver iron levels, decreased mitochondrial respiratory capacity and increased ROS production associated with reduced mitochondrial aconitase activity. Although Hfe-/- resulted in increased mitochondrial iron loading, the concentration of metabolically reactive cytoplasmic iron and mitochondrial density remained unchanged. Our data show multiple effects of dietary and genetic iron loading on mitochondrial function and linked metabolic pathways, providing an explanation for fatigue in iron-overloaded hemochromatosis patients, and suggests iron reduction therapy for improvement of mitochondrial function.
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Affiliation(s)
- Christine Fischer
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria; (C.F.); (C.V.); (M.S.); (E.D.); (L.V.d.S.); (K.A.); (V.P.); (L.v.R.)
| | - Chiara Volani
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria; (C.F.); (C.V.); (M.S.); (E.D.); (L.V.d.S.); (K.A.); (V.P.); (L.v.R.)
| | - Timea Komlódi
- Oroboros Instruments, Schöpfstrasse 18, 6020 Innsbruck, Austria; (T.K.); (E.G.)
| | - Markus Seifert
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria; (C.F.); (C.V.); (M.S.); (E.D.); (L.V.d.S.); (K.A.); (V.P.); (L.v.R.)
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Egon Demetz
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria; (C.F.); (C.V.); (M.S.); (E.D.); (L.V.d.S.); (K.A.); (V.P.); (L.v.R.)
| | - Lara Valente de Souza
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria; (C.F.); (C.V.); (M.S.); (E.D.); (L.V.d.S.); (K.A.); (V.P.); (L.v.R.)
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Kristina Auer
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria; (C.F.); (C.V.); (M.S.); (E.D.); (L.V.d.S.); (K.A.); (V.P.); (L.v.R.)
| | - Verena Petzer
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria; (C.F.); (C.V.); (M.S.); (E.D.); (L.V.d.S.); (K.A.); (V.P.); (L.v.R.)
| | - Laura von Raffay
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria; (C.F.); (C.V.); (M.S.); (E.D.); (L.V.d.S.); (K.A.); (V.P.); (L.v.R.)
| | - Patrizia Moser
- Department of Pathology, Innsbruck University Hospital, Anichstrasse 35, 6020 Innsbruck, Austria;
| | - Erich Gnaiger
- Oroboros Instruments, Schöpfstrasse 18, 6020 Innsbruck, Austria; (T.K.); (E.G.)
| | - Guenter Weiss
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria; (C.F.); (C.V.); (M.S.); (E.D.); (L.V.d.S.); (K.A.); (V.P.); (L.v.R.)
- Christian Doppler Laboratory for Iron Metabolism and Anemia Research, Medical University of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
- Correspondence: ; Tel.: +43-(0)512/504-23251
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