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Caban KM, Seßenhausen P, Stöckl JB, Popper B, Mayerhofer A, Fröhlich T. Proteome profile of the cerebellum from α7 nicotinic acetylcholine receptor deficient mice. Proteomics 2024; 24:e2300384. [PMID: 38185761 DOI: 10.1002/pmic.202300384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 12/18/2023] [Accepted: 12/19/2023] [Indexed: 01/09/2024]
Abstract
The alpha7 nicotinic acetylcholine receptor (α7 nAChR; CHRNA7) is expressed in the nervous system and in non-neuronal tissues. Within the central nervous system, it is involved in various cognitive and sensory processes such as learning, attention, and memory. It is also expressed in the cerebellum, where its roles are; however, not as well understood as in the other brain regions. To investigate the consequences of absence of CHRNA7 on the cerebellum proteome, we performed a quantitative nano-LC-MS/MS analysis of samples from CHRNA7 knockout (KO) mice and corresponding wild type (WT) controls. Liver, an organ which does not express this receptor, was analyzed, in comparison. While the liver proteome remained relatively unaltered (three proteins more abundant in KOs), 90 more and 20 less abundant proteins were detected in the cerebellum proteome of the KO mice. The gene ontology analysis of the differentially abundant proteins indicates that the absence of CHRNA7 leads to alterations in the glutamatergic system and myelin sheath in the cerebellum. In conclusion, our dataset provides new insights in the role of CHRNA7 in the cerebellum, which may serve as a basis for future in depth-investigations.
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Affiliation(s)
| | - Pia Seßenhausen
- Biomedical Center Munich (BMC), Cell Biology, Anatomy III, Faculty of Medicine, Ludwig Maximilian University of Munich, Planegg-Martinsried, Germany
| | - Jan Bernard Stöckl
- Laboratory for Functional Genome Analysis LAFUGA, Gene Center, LMU München, München, Germany
| | - Bastian Popper
- Biomedical Center (BMC), Core Facility Animal Models, Faculty of Medicine, Ludwig-Maximilians-University Munich, Planegg-Martinsried, Germany
| | - Artur Mayerhofer
- Biomedical Center Munich (BMC), Cell Biology, Anatomy III, Faculty of Medicine, Ludwig Maximilian University of Munich, Planegg-Martinsried, Germany
| | - Thomas Fröhlich
- Laboratory for Functional Genome Analysis LAFUGA, Gene Center, LMU München, München, Germany
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Böswald LF, Matzek D, von La Roche D, Stahr B, Bawidamann P, Popper B. Investigations on Xenopus laevis body composition and feeding behavior in a laboratory setting. Sci Rep 2024; 14:9517. [PMID: 38664518 PMCID: PMC11045782 DOI: 10.1038/s41598-024-59848-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 04/16/2024] [Indexed: 04/28/2024] Open
Abstract
The African clawed frog, Xenopus laevis, has been used as a laboratory animal for decades in many research areas. However, there is a lack of knowledge about the nutritional physiology of this amphibian species and the feeding regimen is not standardized. The aim of the present study was to get more insights into the nutrient metabolism and feeding behavior of the frogs. In Trial 1, adult female X. laevis were fed either a Xenopus diet or a fish feed. After 4 weeks, they were euthanized, weighed, measured for morphometrics and dissected for organ weights and whole-body nutrient analysis. There were no significant differences between the diet groups regarding the allometric data and nutrient contents. The ovary was the major determinant of body weight. Body fat content increased with body weight as indicator of energy reserves. In Trial 2, 40 adult female frogs were monitored with a specifically developed digital tracking system to generate heat-maps of their activity before and up to 25 min after a meal. Three diets (floating, sinking, floating & sinking) were used. The main feed intake activity was fanning the feed into the mouth, peaking until 20 min after the meal. The different swimming characteristics of the diets thereby influenced the activity of the animals. Our dataset helps to adjust the feeding needs to the physical composition and also to meet the natural behavioral patterns of feed intake as a prerequisite of animal wellbeing and animal welfare in a laboratory setting.
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Affiliation(s)
- Linda F Böswald
- Chair for Animal Nutrition and Dietetics, Faculty of Veterinary Medicine, Ludwig-Maximilians-Universität München, Schönleutnerstr 8, 85764, Oberschleißheim, Germany
- Biomedical Center, Core Facility Animal Models, Faculty of Medicine, Ludwig-Maximilians-Universität München, Großhaderner Straße 9, 82152, Planegg-Martinsried, Germany
| | - Dana Matzek
- Biomedical Center, Core Facility Animal Models, Faculty of Medicine, Ludwig-Maximilians-Universität München, Großhaderner Straße 9, 82152, Planegg-Martinsried, Germany
| | - Dominik von La Roche
- Chair for Fish Diseases and Fisheries Biology, Faculty of Veterinary Medicine, Ludwig-Maximilians-University Munich, 80539, München, Germany
| | - Bianca Stahr
- Biomedical Center, Core Facility Animal Models, Faculty of Medicine, Ludwig-Maximilians-Universität München, Großhaderner Straße 9, 82152, Planegg-Martinsried, Germany
| | - Pascal Bawidamann
- Chair for Fish Diseases and Fisheries Biology, Faculty of Veterinary Medicine, Ludwig-Maximilians-University Munich, 80539, München, Germany
| | - Bastian Popper
- Biomedical Center, Core Facility Animal Models, Faculty of Medicine, Ludwig-Maximilians-Universität München, Großhaderner Straße 9, 82152, Planegg-Martinsried, Germany.
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Popper B, Bürkle M, Ciccopiedi G, Marchioretto M, Forné I, Imhof A, Straub T, Viero G, Götz M, Schieweck R. Ribosome inactivation regulates translation elongation in neurons. J Biol Chem 2024; 300:105648. [PMID: 38219816 PMCID: PMC10869266 DOI: 10.1016/j.jbc.2024.105648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 12/10/2023] [Accepted: 01/02/2024] [Indexed: 01/16/2024] Open
Abstract
Cellular plasticity is crucial for adapting to ever-changing stimuli. As a result, cells consistently reshape their translatome, and, consequently, their proteome. The control of translational activity has been thoroughly examined at the stage of translation initiation. However, the regulation of ribosome speed in cells is widely unknown. In this study, we utilized a timed ribosome runoff approach, along with proteomics and transmission electron microscopy, to investigate global translation kinetics in cells. We found that ribosome speeds vary among various cell types, such as astrocytes, induced pluripotent human stem cells, human neural stem cells, and human and rat neurons. Of all cell types studied, mature cortical neurons exhibit the highest rate of translation. This finding is particularly remarkable because mature cortical neurons express the eukaryotic elongation factor 2 (eEF2) at lower levels than other cell types. Neurons solve this conundrum by inactivating a fraction of their ribosomes. As a result, the increase in eEF2 levels leads to a reduction of inactive ribosomes and an enhancement of active ones. Processes that alter the demand for active ribosomes, like neuronal excitation, cause increased inactivation of redundant ribosomes in an eEF2-dependent manner. Our data suggest a novel regulatory mechanism in which neurons dynamically inactivate ribosomes to facilitate translational remodeling. These findings have important implications for developmental brain disorders characterized by, among other things, aberrant translation.
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Affiliation(s)
- Bastian Popper
- Core Facility Animal Models, Biomedical Center (BMC), LMU Munich, Munich, Germany
| | - Martina Bürkle
- Department of Physiological Genomics, Biomedical Center (BMC), LMU Munich, Munich, Germany
| | - Giuliana Ciccopiedi
- Department for Cell Biology & Anatomy, Biomedical Center (BMC), LMU Munich, Munich, Germany; Graduate School of Systemic Neurosciences, LMU Munich, Munich, Germany
| | - Marta Marchioretto
- Institute of Biophysics, National Research Council (CNR) Unit at Trento, Povo, Italy
| | - Ignasi Forné
- Protein Analysis Unit, Department for Molecular Biology, Biomedical Center (BMC), LMU Munich, Munich, Germany
| | - Axel Imhof
- Protein Analysis Unit, Department for Molecular Biology, Biomedical Center (BMC), LMU Munich, Munich, Germany
| | - Tobias Straub
- Bioinformatics Core Facility, Department of Molecular Biology, Biomedical Center (BMC), LMU Munich, Munich, Germany
| | - Gabriella Viero
- Institute of Biophysics, National Research Council (CNR) Unit at Trento, Povo, Italy
| | - Magdalena Götz
- Department of Physiological Genomics, Biomedical Center (BMC), LMU Munich, Munich, Germany; Institute of Stem Cell Research, Helmholtz Center Munich, German Research Center for Environmental Health, Munich, Germany; SYNERGY, Excellence Cluster of Systems Neurology, Biomedical Center (BMC), LMU Munich, Munich, Germany
| | - Rico Schieweck
- Department of Physiological Genomics, Biomedical Center (BMC), LMU Munich, Munich, Germany; Department for Cell Biology & Anatomy, Biomedical Center (BMC), LMU Munich, Munich, Germany; Institute of Biophysics, National Research Council (CNR) Unit at Trento, Povo, Italy.
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Schelle L, Côrte-Real JV, Fayyaz S, del Pozo Ben A, Shnipova M, Petersen M, Lotke R, Menon B, Matzek D, Pfaff L, Pinheiro A, Marques JP, Melo-Ferreira J, Popper B, Esteves PJ, Sauter D, Abrantes J, Baldauf HM. Evolutionary and functional characterization of lagomorph guanylate-binding proteins: a story of gain and loss and shedding light on expression, localization and innate immunity-related functions. Front Immunol 2024; 15:1303089. [PMID: 38348040 PMCID: PMC10859415 DOI: 10.3389/fimmu.2024.1303089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 01/04/2024] [Indexed: 02/15/2024] Open
Abstract
Guanylate binding proteins (GBPs) are an evolutionarily ancient family of proteins that are widely distributed among eukaryotes. They belong to the dynamin superfamily of GTPases, and their expression can be partially induced by interferons (IFNs). GBPs are involved in the cell-autonomous innate immune response against bacterial, parasitic and viral infections. Evolutionary studies have shown that GBPs exhibit a pattern of gene gain and loss events, indicative for the birth-and-death model of evolution. Most species harbor large GBP gene clusters that encode multiple paralogs. Previous functional and in-depth evolutionary studies have mainly focused on murine and human GBPs. Since rabbits are another important model system for studying human diseases, we focus here on lagomorphs to broaden our understanding of the multifunctional GBP protein family by conducting evolutionary analyses and performing a molecular and functional characterization of rabbit GBPs. We observed that lagomorphs lack GBP3, 6 and 7. Furthermore, Leporidae experienced a loss of GBP2, a unique duplication of GBP5 and a massive expansion of GBP4. Gene expression analysis by reverse transcriptase quantitative polymerase chain reaction (RT-qPCR) and transcriptome data revealed that leporid GBP expression varied across tissues. Overexpressed rabbit GBPs localized either uniformly and/or discretely to the cytoplasm and/or to the nucleus. Oryctolagus cuniculus (oc)GBP5L1 and rarely ocGBP5L2 were an exception, colocalizing with the trans-Golgi network (TGN). In addition, four ocGBPs were IFN-inducible and only ocGBP5L2 inhibited furin activity. In conclusion, from an evolutionary perspective, lagomorph GBPs experienced multiple gain and loss events, and the molecular and functional characteristics of ocGBP suggest a role in innate immunity.
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Affiliation(s)
- Luca Schelle
- Max von Pettenkofer Institute and Gene Center, Virology, National Reference Center for Retroviruses, Faculty of Medicine, LMU München, Munich, Germany
| | - João Vasco Côrte-Real
- Max von Pettenkofer Institute and Gene Center, Virology, National Reference Center for Retroviruses, Faculty of Medicine, LMU München, Munich, Germany
- CIBIO-InBIO, Research Center in Biodiversity and Genetic Resources, University of Porto, Vairão, Portugal
- Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Vairão, Portugal
| | - Sharmeen Fayyaz
- Institute for Medical Virology and Epidemiology of Viral Diseases, University Hospital Tübingen, Tübingen, Germany
- National Institute of Virology, International Center of Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Augusto del Pozo Ben
- Max von Pettenkofer Institute and Gene Center, Virology, National Reference Center for Retroviruses, Faculty of Medicine, LMU München, Munich, Germany
| | - Margarita Shnipova
- Max von Pettenkofer Institute and Gene Center, Virology, National Reference Center for Retroviruses, Faculty of Medicine, LMU München, Munich, Germany
| | - Moritz Petersen
- Institute for Medical Virology and Epidemiology of Viral Diseases, University Hospital Tübingen, Tübingen, Germany
| | - Rishikesh Lotke
- Institute for Medical Virology and Epidemiology of Viral Diseases, University Hospital Tübingen, Tübingen, Germany
| | - Bhavna Menon
- Max von Pettenkofer Institute and Gene Center, Virology, National Reference Center for Retroviruses, Faculty of Medicine, LMU München, Munich, Germany
| | - Dana Matzek
- Biomedical Center (BMC), Core facility Animal Models (CAM), Faculty of Medicine, LMU München, Munich, Germany
| | - Lena Pfaff
- Biomedical Center (BMC), Core facility Animal Models (CAM), Faculty of Medicine, LMU München, Munich, Germany
| | - Ana Pinheiro
- CIBIO-InBIO, Research Center in Biodiversity and Genetic Resources, University of Porto, Vairão, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Vairão, Portugal
| | - João Pedro Marques
- CIBIO-InBIO, Research Center in Biodiversity and Genetic Resources, University of Porto, Vairão, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Vairão, Portugal
- ISEM, University of Montpellier, CNRS, EPHE, IRD, Montpellier, France
| | - José Melo-Ferreira
- CIBIO-InBIO, Research Center in Biodiversity and Genetic Resources, University of Porto, Vairão, Portugal
- Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Vairão, Portugal
| | - Bastian Popper
- Biomedical Center (BMC), Core facility Animal Models (CAM), Faculty of Medicine, LMU München, Munich, Germany
| | - Pedro José Esteves
- CIBIO-InBIO, Research Center in Biodiversity and Genetic Resources, University of Porto, Vairão, Portugal
- Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Vairão, Portugal
- CITS - Center of Investigation in Health Technologies, CESPU, Gandra, Portugal
| | - Daniel Sauter
- Institute for Medical Virology and Epidemiology of Viral Diseases, University Hospital Tübingen, Tübingen, Germany
| | - Joana Abrantes
- CIBIO-InBIO, Research Center in Biodiversity and Genetic Resources, University of Porto, Vairão, Portugal
- Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Vairão, Portugal
| | - Hanna-Mari Baldauf
- Max von Pettenkofer Institute and Gene Center, Virology, National Reference Center for Retroviruses, Faculty of Medicine, LMU München, Munich, Germany
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Böswald LF, Matzek D, Popper B. Digestibility of crude nutrients and minerals in C57Bl/6J and CD1 mice fed a pelleted lab rodent diet. Sci Rep 2024; 14:1791. [PMID: 38245611 PMCID: PMC10799863 DOI: 10.1038/s41598-024-52271-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Accepted: 01/16/2024] [Indexed: 01/22/2024] Open
Abstract
In laboratory animals, there is a scarcity of digestibility data under non-experimental conditions. Such data is important as basis to generate nutrient requirements, which contributes to the refinement of husbandry conditions. Digestibility trials can also help to identify patterns of absorption and potential factors that influence the digestibility. Thus, a digestibility trial with a pelleted diet used as standard feed in laboratory mice was conducted. To identify potential differences between genetic lines, inbred C57Bl/6 J and outbred CD1 mice (n = 18 each, male, 8 weeks-old, housed in groups of three) were used. For seven days, the feed intake was recorded and the total faeces per cage collected. Energy, crude nutrient and mineral content of diet and faecal samples were analyzed to calculate the apparent digestibility (aD). Apparent dry matter and energy digestibility did not differ between both lines investigated. The C57Bl/6 J mice had significantly higher aD of magnesium and potassium and a trend towards a lower aD of sodium than the mice of the CD1 outbred stock. Lucas-tests were performed to calculate the mean true digestibility of the nutrients and revealed a uniformity of the linear regression over data from both common laboratory mouse lines. The mean true digestibility of crude nutrients was > 90%, except for fibre, that of the minerals ranged between 66 and 97%.
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Affiliation(s)
- Linda F Böswald
- Core Facility Animal Models, Biomedical Center, Ludwig-Maximilians-Universität München, Munich, Germany.
| | - Dana Matzek
- Core Facility Animal Models, Biomedical Center, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Bastian Popper
- Core Facility Animal Models, Biomedical Center, Ludwig-Maximilians-Universität München, Munich, Germany
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6
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Seßenhausen P, Caban KM, Kreitmair N, Peitzsch M, Stöckl JB, Meinsohn MC, Pépin D, Popper B, Fröhlich T, Mayerhofer A. An ovarian phenotype of alpha 7 nicotinic receptor knockout mice. Reproduction 2023; 166:221-234. [PMID: 37432973 DOI: 10.1530/rep-23-0123] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 07/11/2023] [Indexed: 07/13/2023]
Abstract
In brief Nicotinic acetylcholine receptor alpha 7 (nAChRa7), encoded by Chrna7, is expressed by various murine ovarian cells. Morphological and molecular investigations, including a proteomic study of adult Chrna7 knockout (KO) mouse ovaries, reveal the roles of these receptors in the local regulation of the ovary. Abstract Nicotinic acetylcholine receptor alpha 7 (nAChRa7), encoded by Chrna7, is involved in cellular functions ranging from synaptic transmission in neurons to regulation of inflammation, cell growth and metabolism to cell death in other cells. Our qPCR results and other studies indicated that nAChRa7 is expressed in the adult mouse ovary, while in situ hybridization and single-cell sequencing data suggested this expression may be shared by several ovarian cells, including fibroblast-like and steroidogenic stroma cells, macrophages and oocytes of small follicles. To explore a possible involvement of nAChRa7 in ovarian functions, we evaluated ovarian morphology of Chrna7-null mutant adult mice (KO) and wildtype mice (WT; 3 months, metestrus) by performing immunohistochemistry, qPCR studies, measurements of serum progesterone and proteomic analyses. The evaluation of serial sections indicated fewer primordial follicles but similar numbers of primary, secondary and tertiary follicles, as well as corpora lutea in KO and WT mice. Atresia was unchanged. Serum progesterone and mRNA levels of proliferation and most apoptosis markers were not changed, yet two typical macrophage markers were elevated. Furthermore, the proteomes of KO ovaries were significantly altered with 96 proteins increased and 32 decreased in abundance in KOs compared to WTs. Among the elevated proteins were markers for stroma cells. Hence, the lack of nAChRa7 causes changes in small follicle counts and alterations of the ovarian stroma cells. The ovarian phenotype of Chrna7 mutant mice links this channel protein to the local regulation of ovarian cells, including stroma cells.
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Affiliation(s)
- Pia Seßenhausen
- Biomedical Center Munich (BMC), Cell Biology, Anatomy III, Faculty of Medicine, Ludwig Maximilian University of Munich, Planegg-Martinsried, Germany
| | - Karolina M Caban
- Laboratory for Functional Genome Analysis LAFUGA, Gene Center, Ludwig Maximilian University of Munich, München, Germany
| | - Nicole Kreitmair
- Biomedical Center Munich (BMC), Cell Biology, Anatomy III, Faculty of Medicine, Ludwig Maximilian University of Munich, Planegg-Martinsried, Germany
| | - Mirko Peitzsch
- Institut für Klinische Chemie und Laboratoriumsmedizin, Labor Experimentelle Massenspektrometrie und Spurenelemente Universitätsklinikum Carl Gustav Carus an der Technischen Universität Dresden, Dresden, Germany
| | - Jan B Stöckl
- Laboratory for Functional Genome Analysis LAFUGA, Gene Center, Ludwig Maximilian University of Munich, München, Germany
| | - Marie C Meinsohn
- Pediatric Surgical Research Laboratories, Massachusetts General Hospital, and Department of Surgery, Harvard Medical School, Boston, United States
| | - David Pépin
- Pediatric Surgical Research Laboratories, Massachusetts General Hospital, and Department of Surgery, Harvard Medical School, Boston, United States
| | - Bastian Popper
- Biomedical Center (BMC), Core Facility Animal Models, Faculty of Medicine, Ludwig-Maximilian-University Munich, Planegg-Martinsried, Germany
| | - Thomas Fröhlich
- Laboratory for Functional Genome Analysis LAFUGA, Gene Center, Ludwig Maximilian University of Munich, München, Germany
| | - Artur Mayerhofer
- Biomedical Center Munich (BMC), Cell Biology, Anatomy III, Faculty of Medicine, Ludwig Maximilian University of Munich, Planegg-Martinsried, Germany
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Schieweck R, Ciccopiedi G, Klau K, Popper B. Monosomes buffer translational stress to allow for active ribosome elongation. Front Mol Biosci 2023; 10:1158043. [PMID: 37304066 PMCID: PMC10253174 DOI: 10.3389/fmolb.2023.1158043] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 05/10/2023] [Indexed: 06/13/2023] Open
Abstract
Introduction: The synthesis of proteins is a fundamental process in the life-span of all cells. The activation of ribosomes on transcripts is the starting signal for elongation and, in turn, the translation of an mRNA. Thereby, most mRNAs circulate between single (monosomes) and multi ribosomal particles (polysomes), a process that defines their translational activity. The interplay between monosomes and polysomes is thought to crucially impact translation rate. How monosomes and polysomes are balanced during stress remains, however, elusive. Methods: Here, we set out to investigate the monosome and polysome levels as well as their kinetics under different translational stress conditions including mTOR inhibition, downregulation of the eukaryotic elongation factor 2 (eEF2) and amino acid depletion. Results: By using a timed ribosome runoff approach in combination with polysome profiling, we found that the used translational stressors show very distinct effects on translation. However, they all had in common that the activity of monosomes was preferentially affected. This adaptation seems to be needed for sufficient translation elongation. Even under harsh conditions such as amino acid starvation, we detected active polysomes while monosomes were mostly inactive. Hence, it is plausible that cells compensate the reduced availability of essential factors during stress by adapting the levels of active monosomes to favor sufficient elongation. Discussion: These results suggest that monosome and polysome levels are balanced under stress conditions. Together, our data argue for the existence of translational plasticity that ensure sufficient protein synthesis under stress conditions, a process that is necessary for cell survival and recovery.
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Affiliation(s)
- Rico Schieweck
- Biomedical Center (BMC), Department for Cell Biology and Anatomy, Medical Faculty, Ludwig-Maximilians-University, Munich, Germany
| | - Giuliana Ciccopiedi
- Biomedical Center (BMC), Department for Cell Biology and Anatomy, Medical Faculty, Ludwig-Maximilians-University, Munich, Germany
| | - Kenneth Klau
- Biomedical Center (BMC), Department for Cell Biology and Anatomy, Medical Faculty, Ludwig-Maximilians-University, Munich, Germany
| | - Bastian Popper
- Biomedical Center (BMC), Core Facility Animal Models, Ludwig-Maximilians-University, Munich, Germany
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8
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Zhao ZB, Marschner JA, Iwakura T, Li C, Motrapu M, Kuang M, Popper B, Linkermann A, Klocke J, Enghard P, Muto Y, Humphreys BD, Harris HE, Romagnani P, Anders HJ. Tubular Epithelial Cell HMGB1 Promotes AKI-CKD Transition by Sensitizing Cycling Tubular Cells to Oxidative Stress: A Rationale for Targeting HMGB1 during AKI Recovery. J Am Soc Nephrol 2023; 34:394-411. [PMID: 36857499 PMCID: PMC10103235 DOI: 10.1681/asn.0000000000000024] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Accepted: 10/22/2022] [Indexed: 01/22/2023] Open
Abstract
SIGNIFICANCE STATEMENT Cells undergoing necrosis release extracellular high mobility group box (HMGB)-1, which triggers sterile inflammation upon AKI in mice. Neither deletion of HMGB1 from tubular epithelial cells, nor HMGB1 antagonism with small molecules, affects initial ischemic tubular necrosis and immediate GFR loss upon unilateral ischemia/reperfusion injury (IRI). On the contrary, tubular cell-specific HMGB1 deficiency, and even late-onset pharmacological HMGB1 inhibition, increased functional and structural recovery from AKI, indicating that intracellular HMGB1 partially counters the effects of extracellular HMGB1. In vitro studies indicate that intracellular HMGB1 decreases resilience of tubular cells from prolonged ischemic stress, as in unilateral IRI. Intracellular HMGB1 is a potential target to enhance kidney regeneration and to improve long-term prognosis in AKI. BACKGROUND Late diagnosis is a hurdle for treatment of AKI, but targeting AKI-CKD transition may improve outcomes. High mobility group box-1 (HMGB1) is a nuclear regulator of transcription and a driver of necroinflammation in AKI. We hypothesized that HMGB1 would also modulate AKI-CKD transition in other ways. METHODS We conducted single-cell transcriptome analysis of human and mouse AKI and mouse in vivo and in vitro studies with tubular cell-specific depletion of Hmgb1 and HMGB1 antagonists. RESULTS HMGB1 was ubiquitously expressed in kidney cells. Preemptive HMGB1 antagonism with glycyrrhizic acid (Gly) and ethyl pyruvate (EP) did not affect postischemic AKI but attenuated AKI-CKD transition in a model of persistent kidney hypoxia. Consistently, tubular Hmgb1 depletion in Pax8 rtTA, TetO Cre, Hmgb1fl/fl mice did not protect from AKI, but from AKI-CKD transition. In vitro studies confirmed that absence of HMGB1 or HMGB1 inhibition with Gly and EP does not affect ischemic necrosis of growth-arrested differentiated tubular cells but increased the resilience of cycling tubular cells that survived the acute injury to oxidative stress. This effect persisted when neutralizing extracellular HMGB1 with 2G7. Consistently, late-onset HMGB1 blockade with EP started after the peak of ischemic AKI in mice prevented AKI-CKD transition, even when 2G7 blocked extracellular HMGB1. CONCLUSION Treatment of AKI could become feasible when ( 1 ) focusing on long-term outcomes of AKI; ( 2 ) targeting AKI-CKD transition with drugs initiated after the AKI peak; and ( 3 ) targeting with drugs that block HMGB1 in intracellular and extracellular compartments.
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Affiliation(s)
- Zhi Bo Zhao
- Nephrologisches Zentrum, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, LMU München, Munich, Germany
| | - Julian A. Marschner
- Nephrologisches Zentrum, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, LMU München, Munich, Germany
| | - Takamasa Iwakura
- Nephrologisches Zentrum, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, LMU München, Munich, Germany
| | - Chenyu Li
- Nephrologisches Zentrum, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, LMU München, Munich, Germany
| | - Manga Motrapu
- Nephrologisches Zentrum, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, LMU München, Munich, Germany
| | - Meisi Kuang
- Nephrologisches Zentrum, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, LMU München, Munich, Germany
| | - Bastian Popper
- Biomedical Center, Core Facility Animal Models, LMU München, Munich, Germany
| | - Andreas Linkermann
- Division of Nephrology, Department of Internal Medicine 3, University Hospital Carl Gustav Carus at the Technische Universität Dresden, Dresden, Germany
| | - Jan Klocke
- Department of Nephrology and Intensive Care, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Philipp Enghard
- Department of Nephrology and Intensive Care, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Yoshiharu Muto
- Division of Nephrology, Department of Medicine, Washington University in St. Louis, St. Louis, Missouri
| | - Benjamin D. Humphreys
- Division of Nephrology, Department of Medicine, Washington University in St. Louis, St. Louis, Missouri
- Department of Developmental Biology, Washington University in St. Louis, St. Louis, Missouri
| | - Helena Erlandsson Harris
- Departments of Rheumatology and of Medicine Solna, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Paola Romagnani
- Department of Experimental and Biomedical Sciences "Mario Serio" and Nephrology and Dialysis Unit, Meyer Children's University Hospital, Florence, Italy
| | - Hans-Joachim Anders
- Nephrologisches Zentrum, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, LMU München, Munich, Germany
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9
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Böswald LF, Matzek D, Popper B. Current Feeding Practice of Xenopus laevis in a Laboratory Setting. Animals (Basel) 2022; 12:ani12091163. [PMID: 35565589 PMCID: PMC9101390 DOI: 10.3390/ani12091163] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 04/25/2022] [Accepted: 04/28/2022] [Indexed: 11/21/2022] Open
Abstract
Simple Summary The standardization of husbandry conditions, feeding regimens, and diets is the prerequisite for the comparability of results generated by the use of laboratory animals. Compared to rodents, which account for the largest proportion of laboratory animals worldwide, standardization is still inadequate for aquatic species, especially clawed frogs (Xenopus laevis). In this context, species-specific feeding is important for standardization and animal health and welfare. However, the current feeding recommendations for Xenopus are extrapolated from other species’ nutrient requirements. In addition, the feeding regimen itself affects animal behavior. In particular, the feed intake seems to be influenced by the type of feed. Using a questionnaire, the most common methods of husbandry and feeding of Xenopus laevis in laboratory settings were recorded, and the feeds were compared to the recommendations by Ferrie. The results showed variations with regard to husbandry and feeding concepts between facilities. Commercial Xenopus diets and fish feed were the most commonly used feeds, all meeting the recommendation for protein content but differing considerably in mineral content (based on labelled information). It appears that the feed composition and feeding regimen need to be the focus of further research to ensure that feeding and husbandry are adapted to nutritional and behavioral needs. Abstract African clawed frogs are common animal models used in various research areas. However, husbandry and especially feeding regimens are not nearly as standardized as is established for other laboratory animals. We recorded the diets and feeding protocols commonly used in laboratory practice in a questionnaire (18 responses). The survey revealed a wide variety of housing conditions. Feeding protocols and, in particular, diet composition varied considerably between facilities. While diets tailored to Xenopus were used in the majority, differences in feeding frequency and dietary components were noted. From five responses, the weekly feed intake per frog could be calculated, showing considerable differences in dry matter intake (1.37–5.4 g). The labelled nutrient content of the diets fed in the facilities (n = 10) met the recommendations in most cases, with protein as the major energy source. However, the mineral content varied markedly between diets. Both floating and sinking diets were used, while quickly sinking diets were associated with feed leftovers. Feed processing may likely influence feed intake behavior. Further research is needed to ensure standardization for aquatic species with respect to husbandry systems, feeding regimens, and especially the nutrient composition of feeds. Furthermore, this work will contribute positively to animal welfare and the comparability of research results.
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Affiliation(s)
- Linda F. Böswald
- Chair for Animal Nutrition and Dietetics, Faculty of Veterinary Medicine, Ludwig-Maximilians-Universität München, Schönleutnerstr. 8, 85764 Oberschleißheim, Germany;
| | - Dana Matzek
- Biomedical Center, Core Facility Animal Models, Faculty of Medicine, Ludwig-Maximilians-Universität München, Großhaderner Straße 9, 82152 München, Germany;
| | - Bastian Popper
- Biomedical Center, Core Facility Animal Models, Faculty of Medicine, Ludwig-Maximilians-Universität München, Großhaderner Straße 9, 82152 München, Germany;
- Correspondence:
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10
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Dudek M, Lohr K, Donakonda S, Baumann T, Lüdemann M, Hegenbarth S, Dübbel L, Eberhagen C, Michailidou S, Yassin A, Prinz M, Popper B, Rose-John S, Zischka H, Knolle PA. IL-6-induced FOXO1 activity determines the dynamics of metabolism in CD8 T cells cross-primed by liver sinusoidal endothelial cells. Cell Rep 2022; 38:110389. [PMID: 35172161 DOI: 10.1016/j.celrep.2022.110389] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 11/16/2021] [Accepted: 01/25/2022] [Indexed: 12/12/2022] Open
Abstract
Liver sinusoidal endothelial cells (LSECs) are liver-resident antigen (cross)-presenting cells that generate memory CD8 T cells, but metabolic properties of LSECs and LSEC-primed CD8 T cells remain understudied. Here, we report that high-level mitochondrial respiration and constitutive low-level glycolysis support LSEC scavenger and sentinel functions. LSECs fail to increase glycolysis and co-stimulation after TLR4 activation, indicating absence of metabolic and functional maturation compared with immunogenic dendritic cells. LSEC-primed CD8 T cells show a transient burst of oxidative phosphorylation and glycolysis. Mechanistically, co-stimulatory IL-6 signaling ensures high FOXO1 expression in LSEC-primed CD8 T cells, curtails metabolic activity associated with T cell activation, and is indispensable for T cell functionality after re-activation. Thus, distinct immunometabolic features characterize non-immunogenic LSECs compared with immunogenic dendritic cells and LSEC-primed CD8 T cells with memory features compared with effector CD8 T cells. This reveals local features of metabolism and function of T cells in the liver.
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Affiliation(s)
- Michael Dudek
- Institute of Molecular Immunology and Experimental Oncology, University Hospital München rechts der Isar, Technical University of Munich, Ismaningerstr. 22, 81675 München Germany
| | - Kerstin Lohr
- Institute of Molecular Immunology and Experimental Oncology, University Hospital München rechts der Isar, Technical University of Munich, Ismaningerstr. 22, 81675 München Germany
| | - Sainitin Donakonda
- Institute of Molecular Immunology and Experimental Oncology, University Hospital München rechts der Isar, Technical University of Munich, Ismaningerstr. 22, 81675 München Germany
| | - Tobias Baumann
- Institute of Molecular Immunology and Experimental Oncology, University Hospital München rechts der Isar, Technical University of Munich, Ismaningerstr. 22, 81675 München Germany
| | - Max Lüdemann
- Institute of Molecular Immunology and Experimental Oncology, University Hospital München rechts der Isar, Technical University of Munich, Ismaningerstr. 22, 81675 München Germany
| | - Silke Hegenbarth
- Institute of Molecular Immunology and Experimental Oncology, University Hospital München rechts der Isar, Technical University of Munich, Ismaningerstr. 22, 81675 München Germany
| | - Lena Dübbel
- Institute of Molecular Immunology and Experimental Oncology, University Hospital München rechts der Isar, Technical University of Munich, Ismaningerstr. 22, 81675 München Germany
| | - Carola Eberhagen
- Institute of Toxicology, Helmholtz Center München, München, Germany
| | - Savvoula Michailidou
- Institute of Molecular Immunology and Experimental Oncology, University Hospital München rechts der Isar, Technical University of Munich, Ismaningerstr. 22, 81675 München Germany
| | - Abdallah Yassin
- Institute of Molecular Immunology and Experimental Oncology, University Hospital München rechts der Isar, Technical University of Munich, Ismaningerstr. 22, 81675 München Germany
| | - Marco Prinz
- Institute of Neuropathology, Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany; Center for NeuroModulation, Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany; Signalling Research Centres BIOSS and CIBSS, University of Freiburg, Freiburg im Breisgau, Germany
| | - Bastian Popper
- Biomedical Center, Ludwig-Maximilians-University Munich, München, Germany
| | | | - Hans Zischka
- Institute of Toxicology, Helmholtz Center München, München, Germany; Institute of Toxicology and Environmental Hygiene, Technical University Munich, München, Germany
| | - Percy A Knolle
- Institute of Molecular Immunology and Experimental Oncology, University Hospital München rechts der Isar, Technical University of Munich, Ismaningerstr. 22, 81675 München Germany; German Center for Infection Research, Munich site, München, Germany.
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11
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Friedrich V, Forné I, Matzek D, Ring D, Popper B, Jochum L, Spriewald S, Straub T, Imhof A, Krug A, Stecher B, Brocker T. Helicobacter hepaticus is required for immune targeting of bacterial heat shock protein 60 and fatal colitis in mice. Gut Microbes 2022; 13:1-20. [PMID: 33550886 PMCID: PMC7889221 DOI: 10.1080/19490976.2021.1882928] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Gut microbiota and the immune system are in constant exchange shaping both host immunity and microbial communities. Here, improper immune regulation can cause inflammatory bowel disease (IBD) and colitis. Antibody therapies blocking signaling through the CD40-CD40L axis showed promising results as these molecules are deregulated in certain IBD patients. To better understand the mechanism, we used transgenic DC-LMP1/CD40 animals with a constitutive CD40-signal in CD11c+ cells, causing a lack of intestinal CD103+ dendritic cells (DCs) and failure to induce regulatory T (iTreg) cells. These mice rapidly develop spontaneous fatal colitis, accompanied by dysbiosis and increased inflammatory IL-17+IFN-γ+ Th17/Th1 and IFN-γ + Th1 cells. In the present study, we analyzed the impact of the microbiota on disease development and detected elevated IgA- and IgG-levels in sera from DC-LMP1/CD40 animals. Their serum antibodies specifically bound intestinal bacteria, and by proteome analysis, we identified a 60 kDa chaperonin GroEL (Hsp60) from Helicobacter hepaticus (Hh) as the main specific antigen targeted in the absence of iTregs. When re-derived to a different Hh-free specific-pathogen-free (SPF) microbiota, mice showed few signs of disease, normal microbiota, and no fatality. Upon recolonization of mice with Hh, the disease developed rapidly. Thus, the present work identifies GroEL/Hsp60 as a major Hh-antigen and its role in disease onset, progression, and outcome in this colitis model. Our results highlight the importance of CD103+ DC- and iTreg-mediated immune tolerance to specific pathobionts to maintain healthy intestinal balance.
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Affiliation(s)
- Verena Friedrich
- Institute for Immunology, BioMedical Center, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Ignasi Forné
- Protein Analysis Unit, BioMedical Center, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Dana Matzek
- Core Facility Animal Models, BioMedical Center, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Diana Ring
- Max von Pettenkofer Institute of Hygiene and Medical Microbiology, LMU Munich, Munich, Germany
| | - Bastian Popper
- Core Facility Animal Models, BioMedical Center, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Lara Jochum
- Max von Pettenkofer Institute of Hygiene and Medical Microbiology, LMU Munich, Munich, Germany
| | - Stefanie Spriewald
- Max von Pettenkofer Institute of Hygiene and Medical Microbiology, LMU Munich, Munich, Germany
| | - Tobias Straub
- Core Facility Bioinformatics, BioMedical Center, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Axel Imhof
- Protein Analysis Unit, BioMedical Center, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Anne Krug
- Institute for Immunology, BioMedical Center, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Bärbel Stecher
- Max von Pettenkofer Institute of Hygiene and Medical Microbiology, LMU Munich, Munich, Germany,German Center for Infection Research (DZIF), Partner Site, Munich, Germany
| | - Thomas Brocker
- Institute for Immunology, BioMedical Center, Faculty of Medicine, LMU Munich, Munich, Germany,CONTACT Thomas Brocker Institute for Immunology, BioMedical Center, Faculty of Medicine, LMU Munich, Munich82152, Germany
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12
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Wahida A, Müller M, Hiergeist A, Popper B, Steiger K, Branca C, Tschurtschenthaler M, Engleitner T, Donakonda S, De Coninck J, Öllinger R, Pfautsch MK, Müller N, Silva M, Usluer S, Thiele Orberg E, Böttcher JP, Pfarr N, Anton M, Slotta-Huspenina JB, Nerlich AG, Madl T, Basic M, Bleich A, Berx G, Ruland J, Knolle PA, Rad R, Adolph TE, Vandenabeele P, Kanegane H, Gessner A, Jost PJ, Yabal M. XIAP restrains TNF-driven intestinal inflammation and dysbiosis by promoting innate immune responses of Paneth and dendritic cells. Sci Immunol 2021; 6:eabf7235. [PMID: 34739338 DOI: 10.1126/sciimmunol.abf7235] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Deficiency in X-linked inhibitor of apoptosis protein (XIAP) is the cause for X-linked lymphoproliferative syndrome 2 (XLP2). About one-third of these patients suffer from severe and therapy-refractory inflammatory bowel disease (IBD), but the exact cause of this pathogenesis remains undefined. Here, we used XIAP-deficient mice to characterize the mechanisms underlying intestinal inflammation. In Xiap−/− mice, we observed spontaneous terminal ileitis and microbial dysbiosis characterized by a reduction of Clostridia species. We showed that in inflamed mice, both TNF receptor 1 and 2 (TNFR1/2) cooperated in promoting ileitis by targeting TLR5-expressing Paneth cells (PCs) or dendritic cells (DCs). Using intestinal organoids and in vivo modeling, we demonstrated that TLR5 signaling triggered TNF production, which induced PC dysfunction mediated by TNFR1. TNFR2 acted upon lamina propria immune cells. scRNA-seq identified a DC population expressing TLR5, in which Tnfr2 expression was also elevated. Thus, the combined activity of TLR5 and TNFR2 signaling may be responsible for DC loss in lamina propria of Xiap−/− mice. Consequently, both Tnfr1−/−Xiap−/− and Tnfr2−/−Xiap−/− mice were rescued from dysbiosis and intestinal inflammation. Furthermore, RNA-seq of ileal crypts revealed that in inflamed Xiap−/− mice, TLR5 signaling was abrogated, linking aberrant TNF responses with the development of a dysbiosis. Evidence for TNFR2 signaling driving intestinal inflammation was detected in XLP2 patient samples. Together, these data point toward a key role of XIAP in mediating resilience of TLR5-expressing PCs and intestinal DCs, allowing them to maintain tissue integrity and microbiota homeostasis.
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MESH Headings
- Animals
- Dendritic Cells/immunology
- Dysbiosis/immunology
- Humans
- Immunity, Innate/immunology
- Inflammation/immunology
- Intestines/immunology
- Mice
- Mice, Knockout
- Paneth Cells/immunology
- Receptors, Tumor Necrosis Factor, Type I/deficiency
- Receptors, Tumor Necrosis Factor, Type I/immunology
- Receptors, Tumor Necrosis Factor, Type II/deficiency
- Receptors, Tumor Necrosis Factor, Type II/immunology
- Toll-Like Receptor 5/immunology
- X-Linked Inhibitor of Apoptosis Protein/deficiency
- X-Linked Inhibitor of Apoptosis Protein/immunology
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Affiliation(s)
- Adam Wahida
- Medical Department III for Hematology and Oncology, TUM School of Medicine, Technical University of Munich, Munich, Germany
- TranslaTUM, Center for Translational Cancer Research, Munich, Germany
| | - Madeleine Müller
- Institute of Molecular Immunology and Experimental Oncology, TUM School of Medicine, Technical University of Munich, Munich, Germany
| | - Andreas Hiergeist
- Institute of Clinical Microbiology and Hygiene, University Hospital Regensburg, Regensburg, Germany
| | - Bastian Popper
- Biomedical Center, Core Facility Animal Models, Ludwig-Maximilians-University, Planegg-Martinsried, Germany
| | - Katja Steiger
- Institute of Pathology and Pathological Anatomy, Technical University of Munich, Munich, Germany
- Comparative Experimental Pathology and Digital Pathology, Institute for Pathology and Pathological Anatomy, Technical University of Munich, Munich, Germany
| | - Caterina Branca
- Medical Department III for Hematology and Oncology, TUM School of Medicine, Technical University of Munich, Munich, Germany
- TranslaTUM, Center for Translational Cancer Research, Munich, Germany
| | - Markus Tschurtschenthaler
- TranslaTUM, Center for Translational Cancer Research, Munich, Germany
- Institute of Translational Cancer Research and Experimental Cancer Therapy, TUM School of Medicine, Technical University of Munich, Munich, Germany
| | - Thomas Engleitner
- TranslaTUM, Center for Translational Cancer Research, Munich, Germany
- Institute of Molecular Oncology and Functional Genomics, TUM School of Medicine, Technical University of Munich, Munich, Germany
| | - Sainitin Donakonda
- Institute of Molecular Immunology and Experimental Oncology, TUM School of Medicine, Technical University of Munich, Munich, Germany
- German Center for Infection Research (DZIF), Munich, Germany
| | - Jordy De Coninck
- Molecular and Cellular Oncology Laboratory, Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- Cancer Research Institute Ghent, Ghent, Belgium
| | - Rupert Öllinger
- TranslaTUM, Center for Translational Cancer Research, Munich, Germany
- Institute of Molecular Oncology and Functional Genomics, TUM School of Medicine, Technical University of Munich, Munich, Germany
| | - Marie K Pfautsch
- Institute of Molecular Immunology and Experimental Oncology, TUM School of Medicine, Technical University of Munich, Munich, Germany
| | - Nicole Müller
- Medical Department III for Hematology and Oncology, TUM School of Medicine, Technical University of Munich, Munich, Germany
| | - Miguel Silva
- TranslaTUM, Center for Translational Cancer Research, Munich, Germany
- Institute of Molecular Oncology and Functional Genomics, TUM School of Medicine, Technical University of Munich, Munich, Germany
| | - Sinem Usluer
- Gottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Medical University of Graz, Graz, Austria
- BioTechMed Graz, Graz, Austria
| | - Erik Thiele Orberg
- Medical Department III for Hematology and Oncology, TUM School of Medicine, Technical University of Munich, Munich, Germany
- TranslaTUM, Center for Translational Cancer Research, Munich, Germany
| | - Jan P Böttcher
- Institute of Molecular Immunology and Experimental Oncology, TUM School of Medicine, Technical University of Munich, Munich, Germany
| | - Nicole Pfarr
- Institute of Pathology and Pathological Anatomy, Technical University of Munich, Munich, Germany
| | - Martina Anton
- Institute of Molecular Immunology and Experimental Oncology, TUM School of Medicine, Technical University of Munich, Munich, Germany
| | - Julia B Slotta-Huspenina
- Institute of Pathology and Pathological Anatomy, Technical University of Munich, Munich, Germany
| | - Andreas G Nerlich
- Institute of Pathology, Academic Clinic Munich-Bogenhausen, Munich, Germany
| | - Tobias Madl
- Gottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Medical University of Graz, Graz, Austria
- BioTechMed Graz, Graz, Austria
| | - Marijana Basic
- Institute for Laboratory Animal Science and Central Animal Facility, Hannover Medical School, Hannover, Germany
| | - André Bleich
- Institute for Laboratory Animal Science and Central Animal Facility, Hannover Medical School, Hannover, Germany
| | - Geert Berx
- Molecular and Cellular Oncology Laboratory, Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- Cancer Research Institute Ghent, Ghent, Belgium
| | - Jürgen Ruland
- TranslaTUM, Center for Translational Cancer Research, Munich, Germany
- Institute of Clinical Chemistry and Pathobiochemistry, TUM School of Medicine, Technical University of Munich, Munich, Germany
| | - Percy A Knolle
- Institute of Molecular Immunology and Experimental Oncology, TUM School of Medicine, Technical University of Munich, Munich, Germany
- German Center for Infection Research (DZIF), Munich, Germany
| | - Roland Rad
- TranslaTUM, Center for Translational Cancer Research, Munich, Germany
- Institute of Molecular Oncology and Functional Genomics, TUM School of Medicine, Technical University of Munich, Munich, Germany
| | - Timon E Adolph
- Department of Internal Medicine I for Gastroenterology, Hepatology, and Endocrinology, Medical University of Innsbruck, Innsbruck, Austria
| | - Peter Vandenabeele
- Cell Death and Inflammation Unit, VIB-Center for Inflammation Research (IRC), VIB, Ghent, Belgium
- Department of Biomedical Molecular Biology (DBMB), Ghent University, Ghent, Belgium
| | - Hirokazu Kanegane
- Department of Child Health and Development, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - André Gessner
- Institute of Clinical Microbiology and Hygiene, University Hospital Regensburg, Regensburg, Germany
| | - Philipp J Jost
- Medical Department III for Hematology and Oncology, TUM School of Medicine, Technical University of Munich, Munich, Germany
- Division of Clinical Oncology, Department of Medicine, Medical University of Graz, Graz, Austria
| | - Monica Yabal
- Institute of Molecular Immunology and Experimental Oncology, TUM School of Medicine, Technical University of Munich, Munich, Germany
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13
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Schieweck R, Schöneweiss EC, Harner M, Rieger D, Illig C, Saccà B, Popper B, Kiebler MA. Pumilio2 Promotes Growth of Mature Neurons. Int J Mol Sci 2021; 22:ijms22168998. [PMID: 34445704 PMCID: PMC8396670 DOI: 10.3390/ijms22168998] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/13/2021] [Accepted: 08/19/2021] [Indexed: 01/05/2023] Open
Abstract
RNA-binding proteins (RBPs) are essential regulators controlling both the cellular transcriptome and translatome. These processes enable cellular plasticity, an important prerequisite for growth. Cellular growth is a complex, tightly controlled process. Using cancer cells as model, we looked for RBPs displaying strong expression in published transcriptome datasets. Interestingly, we found the Pumilio (Pum) protein family to be highly expressed in all these cells. Moreover, we observed that Pum2 is regulated by basic fibroblast growth factor (bFGF). bFGF selectively enhances protein levels of Pum2 and the eukaryotic initiation factor 4E (eIF4E). Exploiting atomic force microscopy and in vitro pulldown assays, we show that Pum2 selects for eIF4E mRNA binding. Loss of Pum2 reduces eIF4E translation. Accordingly, depletion of Pum2 led to decreased soma size and dendritic branching of mature neurons, which was accompanied by a reduction in essential growth factors. In conclusion, we identify Pum2 as an important growth factor for mature neurons. Consequently, it is tempting to speculate that Pum2 may promote cancer growth.
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Affiliation(s)
- Rico Schieweck
- Biomedical Center (BMC), Department for Cell Biology & Anatomy, Medical Faculty, Ludwig-Maximilians-University, 82152 München, Germany; (R.S.); (M.H.); (D.R.); (C.I.); (M.A.K.)
| | - Elisa-Charlott Schöneweiss
- Zentrum für Medizinische Biotechnologie (ZMB), University of Duisburg-Essen, 41541 Duisburg, Germany; (E.-C.S.); (B.S.)
| | - Max Harner
- Biomedical Center (BMC), Department for Cell Biology & Anatomy, Medical Faculty, Ludwig-Maximilians-University, 82152 München, Germany; (R.S.); (M.H.); (D.R.); (C.I.); (M.A.K.)
| | - Daniela Rieger
- Biomedical Center (BMC), Department for Cell Biology & Anatomy, Medical Faculty, Ludwig-Maximilians-University, 82152 München, Germany; (R.S.); (M.H.); (D.R.); (C.I.); (M.A.K.)
| | - Christin Illig
- Biomedical Center (BMC), Department for Cell Biology & Anatomy, Medical Faculty, Ludwig-Maximilians-University, 82152 München, Germany; (R.S.); (M.H.); (D.R.); (C.I.); (M.A.K.)
| | - Barbara Saccà
- Zentrum für Medizinische Biotechnologie (ZMB), University of Duisburg-Essen, 41541 Duisburg, Germany; (E.-C.S.); (B.S.)
| | - Bastian Popper
- Biomedical Center (BMC), Department for Cell Biology & Anatomy, Medical Faculty, Ludwig-Maximilians-University, 82152 München, Germany; (R.S.); (M.H.); (D.R.); (C.I.); (M.A.K.)
- Biomedical Center (BMC), Core Facility Animal Models, Ludwig-Maximilians-University, 82152 München, Germany
- Correspondence: ; Tel.: +49-89-2180-71996
| | - Michael A. Kiebler
- Biomedical Center (BMC), Department for Cell Biology & Anatomy, Medical Faculty, Ludwig-Maximilians-University, 82152 München, Germany; (R.S.); (M.H.); (D.R.); (C.I.); (M.A.K.)
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14
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Stutte S, Ruf J, Kugler I, Ishikawa-Ankerhold H, Parzefall A, Marconi P, Maeda T, Kaisho T, Krug A, Popper B, Lauterbach H, Colonna M, von Andrian U, Brocker T. Type I interferon mediated induction of somatostatin leads to suppression of ghrelin and appetite thereby promoting viral immunity in mice. Brain Behav Immun 2021; 95:429-443. [PMID: 33895286 DOI: 10.1016/j.bbi.2021.04.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 04/06/2021] [Accepted: 04/20/2021] [Indexed: 12/18/2022] Open
Abstract
Loss of appetite (anorexia) is a typical behavioral response to infectious diseases that often reduces body weight. Also, anorexia can be observed in cancer and trauma patients, causing poor quality of life and reduced prospects of positive therapeutic outcomes. Although anorexia is an acute symptom, its initiation and endocrine regulation during antiviral immune responses are poorly understood. During viral infections, plasmacytoid dendritic cells (pDCs) produce abundant type I interferon (IFN-I) to initiate first-line defense mechanisms. Here, by targeted ablation of pDCs and various in vitro and in vivo mouse models of viral infection and inflammation, we identified that IFN-I is a significant driver of somatostatin (SST). Consequently, SST suppressed the hunger hormone ghrelin that led to severe metabolic changes, anorexia, and rapid body weight loss. Furthermore, during vaccination with Modified Vaccinia Ankara virus (MVA), the SST-mediated suppression of ghrelin was critical to viral immune response, as ghrelin restrained the production of early cytokines by natural killer (NK) cells and pDCs, and impaired the clonal expansion of CD8+ T cells. Thus, the hormonal modulation of ghrelin through SST and the cytokine IFN-I is fundamental for optimal antiviral immunity, which comes at the expense of calorie intake.
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Affiliation(s)
- Susanne Stutte
- Institute for Immunology, Faculty of Medicine, LMU Munich, Germany; Department of Immunology, Blavatnik Institute, Harvard Medical School, Boston, USA
| | - Janina Ruf
- Institute for Immunology, Faculty of Medicine, LMU Munich, Germany
| | - Ina Kugler
- Institute for Immunology, Faculty of Medicine, LMU Munich, Germany
| | | | - Andreas Parzefall
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Peggy Marconi
- Department of Chemical and Pharmaceutical Sciences (DipSCF), University of Ferrara, Italy
| | - Takahiro Maeda
- Departments of Island and Community Medicine, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1, Sakamoto, Nagasaki City, Japan
| | - Tsuneyasu Kaisho
- Department of Immunology, Institute of Advanced Medicine, Wakayama Medical University, Kimiidera 811-1, Wakayama 641-8509, Japan
| | - Anne Krug
- Institute for Immunology, Faculty of Medicine, LMU Munich, Germany
| | - Bastian Popper
- Biomedical Center (BMC), Core Facility Animal Models, Medical Faculty, LMU Munich, Germany
| | | | - Marco Colonna
- Washington University, School of Medicine, St. Louis, USA
| | - Ulrich von Andrian
- Department of Immunology, Blavatnik Institute, Harvard Medical School, Boston, USA
| | - Thomas Brocker
- Institute for Immunology, Faculty of Medicine, LMU Munich, Germany.
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15
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Baldauf HM, Weingartner S, Hofmann K, Mitteregger-Kretzschmar G, Popper B, Bönisch MP, Keppler OT. Thermal Inactivation of Carcasses of Mice and Rabbits Infected with Pathogens of Risk Groups Two to Four. J Am Assoc Lab Anim Sci 2021; 60:451-461. [PMID: 34034857 PMCID: PMC9390612 DOI: 10.30802/aalas-jaalas-20-000097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/31/2020] [Accepted: 02/05/2021] [Indexed: 11/05/2022]
Abstract
Pathogenesis of viruses or other agents that are infectious to humans is frequently studied in vivo using natural or genetically modified animals. Depending on the risk group of the pathogen, the majority of such experimental studies are performed at least under biosafety level 2 (BSL-2) conditions. Biosafety considerations are therefore critical at all steps of research involving potentially infectious pathogens. Inactivation of pathogens studied using in vitro experiments is usually performed using moist heat sterilization. However, few standardized and validated protocols are currently available for the thermal inactivation of carcasses from laboratory animals infected with such human pathogens. To comply with laboratory biologic safety rules and requirements imposed by regulatory authorities, documentation of appropriate inactivation conditions or use of a validated procedure according to national or international standards is critical. In the current study, we evaluated inactivation protocols in a standard laboratory autoclave for carcasses of either frozen mice or recently terminated rabbits, which were placed inside autoclave bags with bedding material in stainless steel containers. Temperature sensors were placed into different tissues of the carcasses to continuously record temperature in situ and in real-time, and a reference sensor was placed in the autoclave. To achieve pathogen inactivation, autoclaving protocols had to be optimized for both species. Frozen mice required 2 different fractionated prevacuum stages, whereas recently terminated rabbits required 3 different fractionated prevacuum stages. This study provides a template for an evaluation procedure to safely and effectively inactivate mice and rabbits infected with risk group 2 to 4 pathogens.
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Affiliation(s)
- Hanna-Mari Baldauf
- Max von Pettenkofer Institute & Gene Center, Virology, National Reference Center for Retroviruses, Faculty of Medicine, LMU München, Munich, Germany;,
| | - Siegfried Weingartner
- MMM Münchner Medizin Mechanik GmbH, Semmelweisstraße 6, 82152 Planegg/München, Germany
| | - Katharina Hofmann
- Max von Pettenkofer Institute & Gene Center, Virology, National Reference Center for Retroviruses, Faculty of Medicine, LMU München, Munich, Germany
| | | | - Bastian Popper
- Biomedical Center, Core Facility Animal Models, Faculty of Medicine, LMU München, Planegg-Martinsried, Germany
| | - Martin P Bönisch
- MMM Münchner Medizin Mechanik GmbH, Semmelweisstraße 6, 82152 Planegg/München, Germany
| | - Oliver T Keppler
- Max von Pettenkofer Institute & Gene Center, Virology, National Reference Center for Retroviruses, Faculty of Medicine, LMU München, Munich, Germany
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16
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Schieweck R, Riedemann T, Forné I, Harner M, Bauer KE, Rieger D, Ang FY, Hutten S, Demleitner AF, Popper B, Derdak S, Sutor B, Bilban M, Imhof A, Kiebler MA. Pumilio2 and Staufen2 selectively balance the synaptic proteome. Cell Rep 2021; 35:109279. [PMID: 34161769 DOI: 10.1016/j.celrep.2021.109279] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 03/05/2021] [Accepted: 05/28/2021] [Indexed: 12/11/2022] Open
Abstract
Neurons have the capacity to adapt to environmental stimuli, a phenomenon termed cellular plasticity. The underlying processes are controlled by a network of RNA-binding proteins (RBPs). Their precise impact, however, is largely unknown. To address this important question, we chose Pumilio2 (Pum2) and Staufen2 (Stau2), which both regulate synaptic transmission. Surprisingly, even though both RBPs dynamically interact with each other in neurons, their respective impact on the transcriptome and proteome is highly selective. Although Pum2 deficiency leads to reduced translation and protein expression, Stau2 depletion preferentially impacts RNA levels and increases protein abundance. Furthermore, we show that Pum2 activates expression of key GABAergic synaptic components, e.g., the GABAA receptor scaffold protein Gephyrin. Consequently, Pum2 depletion selectively reduced the amplitude of miniature inhibitory postsynaptic currents. Together, our data argue for an important role of RBPs to maintain proteostasis in order to control distinct aspects of synaptic transmission.
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Affiliation(s)
- Rico Schieweck
- Biomedical Center (BMC), Department for Cell Biology & Anatomy, Medical Faculty, Ludwig-Maximilians-University, 82152 Planegg-Martinsried, Germany
| | - Therese Riedemann
- Biomedical Center (BMC), Department of Physiological Genomics, Ludwig-Maximilians-University, 82152 Planegg-Martinsried, Germany
| | - Ignasi Forné
- Biomedical Center (BMC), Department for Molecular Biology (Protein Analysis Unit), Medical Faculty, Ludwig-Maximilians-University, 82152 Planegg-Martinsried, Germany
| | - Max Harner
- Biomedical Center (BMC), Department for Cell Biology & Anatomy, Medical Faculty, Ludwig-Maximilians-University, 82152 Planegg-Martinsried, Germany
| | - Karl E Bauer
- Biomedical Center (BMC), Department for Cell Biology & Anatomy, Medical Faculty, Ludwig-Maximilians-University, 82152 Planegg-Martinsried, Germany
| | - Daniela Rieger
- Biomedical Center (BMC), Department for Cell Biology & Anatomy, Medical Faculty, Ludwig-Maximilians-University, 82152 Planegg-Martinsried, Germany
| | - Foong Yee Ang
- Biomedical Center (BMC), Department for Cell Biology & Anatomy, Medical Faculty, Ludwig-Maximilians-University, 82152 Planegg-Martinsried, Germany
| | - Saskia Hutten
- Biomedical Center (BMC), Department for Cell Biology & Anatomy, Medical Faculty, Ludwig-Maximilians-University, 82152 Planegg-Martinsried, Germany
| | - Antonia F Demleitner
- Biomedical Center (BMC), Department for Cell Biology & Anatomy, Medical Faculty, Ludwig-Maximilians-University, 82152 Planegg-Martinsried, Germany
| | - Bastian Popper
- Biomedical Center (BMC), Department for Cell Biology & Anatomy, Medical Faculty, Ludwig-Maximilians-University, 82152 Planegg-Martinsried, Germany; Biomedical Center (BMC), Core Facility Animal Models, Ludwig-Maximilians-University, 82152 Planegg-Martinsried, Germany
| | - Sophia Derdak
- Medical University of Vienna, Core Facilities, Lazarettgasse 14, 1090 Vienna, Austria
| | - Bernd Sutor
- Biomedical Center (BMC), Department of Physiological Genomics, Ludwig-Maximilians-University, 82152 Planegg-Martinsried, Germany
| | - Martin Bilban
- Department of Laboratory Medicine and Core Facility Genomics, Medical University of Vienna, 1090 Vienna, Austria
| | - Axel Imhof
- Biomedical Center (BMC), Department for Molecular Biology (Protein Analysis Unit), Medical Faculty, Ludwig-Maximilians-University, 82152 Planegg-Martinsried, Germany
| | - Michael A Kiebler
- Biomedical Center (BMC), Department for Cell Biology & Anatomy, Medical Faculty, Ludwig-Maximilians-University, 82152 Planegg-Martinsried, Germany.
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17
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Missel A, Walenta L, Eubler K, Mundt N, Heikelä H, Pickl U, Trottmann M, Popper B, Poutanen M, Strauss L, Köhn FM, Kunz L, Spehr M, Mayerhofer A. Testicular adenosine acts as a pro-inflammatory molecule: role of testicular peritubular cells. Mol Hum Reprod 2021; 27:6276438. [PMID: 33993290 DOI: 10.1093/molehr/gaab037] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 04/27/2021] [Indexed: 12/13/2022] Open
Abstract
Extracellular ATP has been described to be involved in inflammatory cytokine production by human testicular peritubular cells (HTPCs). The ectonucleotidases ENTPD1 and NT5E degrade ATP and have been reported in rodent testicular peritubular cells. We hypothesized that if a similar situation exists in human testis, ATP metabolites may contribute to cytokine production. Indeed, ENTPD1 and NT5E were found in situ and in vitro in HTPCs. Malachite green assays confirmed enzyme activities in HTPCs. Pharmacological inhibition of ENTPD1 (by POM-1) significantly reduced pro-inflammatory cytokines evoked by ATP treatment, suggesting that metabolites of ATP, including adenosine, are likely involved. We focused on adenosine and detected three of the four known adenosine receptors in HTPCs. One, A2B, was also found in situ in peritubular cells of human testicular sections. The A2B agonist BAY60-6583 significantly elevated levels of IL6 and CXCL8, a result also obtained with adenosine and its analogue NECA. Results of siRNA-mediated A2B down-regulation support a role of this receptor. In mouse peritubular cells, in contrast to HTPCs, all four of the known adenosine receptors were detected; when challenged with adenosine, cytokine expression levels significantly increased. Organotypic short-term testis cultures yielded comparable results and indicate an overall pro-inflammatory action of adenosine in the mouse testis. If transferable to the in vivo situation, our results may implicate that interference with the generation of ATP metabolites or interference with adenosine receptors could reduce inflammatory events in the testis. These novel insights may provide new avenues for treatment of sterile inflammation in male subfertility and infertility.
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Affiliation(s)
- Annika Missel
- Cell Biology-Anatomy III, Faculty of Medicine, Biomedical Center (BMC), Ludwig-Maximilians-University Munich, Martinsried, Germany
| | - Lena Walenta
- Cell Biology-Anatomy III, Faculty of Medicine, Biomedical Center (BMC), Ludwig-Maximilians-University Munich, Martinsried, Germany
| | - Katja Eubler
- Cell Biology-Anatomy III, Faculty of Medicine, Biomedical Center (BMC), Ludwig-Maximilians-University Munich, Martinsried, Germany
| | - Nadine Mundt
- Institute of Biology II/Department of Chemosensation, RWTH Aachen University, Aachen, Germany.,Research Training Group 2416, MultiSenses-MultiScales, RWTH Aachen University, Aachen, Germany
| | - Hanna Heikelä
- Institute of Biomedicine, Research Center for Integrative Physiology and Pharmacology, Turku Center for Disease Modeling, University of Turku, Turku, Finland
| | | | | | - Bastian Popper
- Biomedical Center (BMC), Core Facility Animal Models, Faculty of Medicine, Ludwig-Maximilians-University Munich, Martinsried, Germany
| | - Matti Poutanen
- Institute of Biomedicine, Research Center for Integrative Physiology and Pharmacology, Turku Center for Disease Modeling, University of Turku, Turku, Finland
| | - Leena Strauss
- Institute of Biomedicine, Research Center for Integrative Physiology and Pharmacology, Turku Center for Disease Modeling, University of Turku, Turku, Finland
| | | | - Lars Kunz
- Division of Neurobiology, Department of Biology II, Ludwig-Maximilians-University Munich, Martinsried, Germany
| | - Marc Spehr
- Institute of Biology II/Department of Chemosensation, RWTH Aachen University, Aachen, Germany.,Research Training Group 2416, MultiSenses-MultiScales, RWTH Aachen University, Aachen, Germany
| | - Artur Mayerhofer
- Cell Biology-Anatomy III, Faculty of Medicine, Biomedical Center (BMC), Ludwig-Maximilians-University Munich, Martinsried, Germany
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18
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Immler R, Lange-Sperandio B, Steffen T, Beck H, Rohwedder I, Roth J, Napoli M, Hupel G, Pfister F, Popper B, Uhl B, Mannell H, Reichel CA, Vielhauer V, Scherberich J, Sperandio M, Pruenster M. Extratubular Polymerized Uromodulin Induces Leukocyte Recruitment and Inflammation In Vivo. Front Immunol 2020; 11:588245. [PMID: 33414784 PMCID: PMC7783395 DOI: 10.3389/fimmu.2020.588245] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 11/17/2020] [Indexed: 11/13/2022] Open
Abstract
Uromodulin (UMOD) is produced and secreted by tubular epithelial cells. Secreted UMOD polymerizes (pUMOD) in the tubular lumen, where it regulates salt transport and protects the kidney from bacteria and stone formation. Under various pathological conditions, pUMOD accumulates within the tubular lumen and reaches extratubular sites where it may interact with renal interstitial cells. Here, we investigated the potential of extratubular pUMOD to act as a damage associated molecular pattern (DAMP) molecule thereby creating local inflammation. We found that intrascrotal and intraperitoneal injection of pUMOD induced leukocyte recruitment in vivo and led to TNF-α secretion by F4/80 positive macrophages. Additionally, pUMOD directly affected vascular permeability and increased neutrophil extravasation independent of macrophage-released TNF-α. Interestingly, pUMOD displayed no chemotactic properties on neutrophils, did not directly activate β2 integrins and did not upregulate adhesion molecules on endothelial cells. In obstructed neonatal murine kidneys, we observed extratubular UMOD accumulation in the renal interstitium with tubular atrophy and leukocyte infiltrates. Finally, we found extratubular UMOD deposits associated with peritubular leukocyte infiltration in kidneys from patients with inflammatory kidney diseases. Taken together, we identified extratubular pUMOD as a strong inducer of leukocyte recruitment, underlining its critical role in mounting an inflammatory response in various kidneys pathologies.
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Affiliation(s)
- Roland Immler
- Walter Brendel Centre of Experimental Medicine, Biomedical Center, Institute of Cardiovascular Physiology and Pathophysiology, Ludwig-Maximilians-University Munich, Planegg-Martinsried, Germany
| | - Bärbel Lange-Sperandio
- Department of Pediatrics, Dr. von Hauner Children’s Hospital, University Hospital, Ludwig-Maximilians University, Munich, Germany
| | - Tobias Steffen
- Walter Brendel Centre of Experimental Medicine, Biomedical Center, Institute of Cardiovascular Physiology and Pathophysiology, Ludwig-Maximilians-University Munich, Planegg-Martinsried, Germany
| | - Heike Beck
- Walter Brendel Centre of Experimental Medicine, Biomedical Center, Institute of Cardiovascular Physiology and Pathophysiology, Ludwig-Maximilians-University Munich, Planegg-Martinsried, Germany
| | - Ina Rohwedder
- Walter Brendel Centre of Experimental Medicine, Biomedical Center, Institute of Cardiovascular Physiology and Pathophysiology, Ludwig-Maximilians-University Munich, Planegg-Martinsried, Germany
| | - Jonas Roth
- Walter Brendel Centre of Experimental Medicine, Biomedical Center, Institute of Cardiovascular Physiology and Pathophysiology, Ludwig-Maximilians-University Munich, Planegg-Martinsried, Germany
| | - Matteo Napoli
- Walter Brendel Centre of Experimental Medicine, Biomedical Center, Institute of Cardiovascular Physiology and Pathophysiology, Ludwig-Maximilians-University Munich, Planegg-Martinsried, Germany
| | - Georg Hupel
- Walter Brendel Centre of Experimental Medicine, Biomedical Center, Institute of Cardiovascular Physiology and Pathophysiology, Ludwig-Maximilians-University Munich, Planegg-Martinsried, Germany
| | - Frederik Pfister
- Department of Nephropathology, Institute of Pathology, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany
| | - Bastian Popper
- Core facility animal models, Biomedical Center, Ludwig-Maximilians-University Munich, Planegg-Martinsried, Germany
- Institute of Pathology, School of Medicine, Technical University of Munich, Munich, Germany
| | - Bernd Uhl
- Walter Brendel Centre of Experimental Medicine, Biomedical Center, Institute of Cardiovascular Physiology and Pathophysiology, Ludwig-Maximilians-University Munich, Planegg-Martinsried, Germany
- Department of Otorhinolaryngology, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Hanna Mannell
- Walter Brendel Centre of Experimental Medicine, Biomedical Center, Institute of Cardiovascular Physiology and Pathophysiology, Ludwig-Maximilians-University Munich, Planegg-Martinsried, Germany
| | - Christoph A. Reichel
- Walter Brendel Centre of Experimental Medicine, Biomedical Center, Institute of Cardiovascular Physiology and Pathophysiology, Ludwig-Maximilians-University Munich, Planegg-Martinsried, Germany
- Department of Otorhinolaryngology, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Volker Vielhauer
- Medizinische Klinik und Poliklinik IV, Nephrologisches Zentrum, University Hospital, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Jürgen Scherberich
- Klinikum Harlaching, teaching hospital of the Ludwig-Maximilians University Munich, Munich, Germany
| | - Markus Sperandio
- Walter Brendel Centre of Experimental Medicine, Biomedical Center, Institute of Cardiovascular Physiology and Pathophysiology, Ludwig-Maximilians-University Munich, Planegg-Martinsried, Germany
| | - Monika Pruenster
- Walter Brendel Centre of Experimental Medicine, Biomedical Center, Institute of Cardiovascular Physiology and Pathophysiology, Ludwig-Maximilians-University Munich, Planegg-Martinsried, Germany
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19
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Lange Canhos L, Chen M, Falk S, Popper B, Straub T, Götz M, Sirko S. Repetitive injury and absence of monocytes promote astrocyte self-renewal and neurological recovery. Glia 2020; 69:165-181. [PMID: 32744730 DOI: 10.1002/glia.23893] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 07/07/2020] [Accepted: 07/08/2020] [Indexed: 12/24/2022]
Abstract
Unlike microglia and NG2 glia, astrocytes are incapable of migrating to sites of injury in the posttraumatic cerebral cortex, instead relying on proliferation to replenish their numbers and distribution in the affected region. However, neither the spectrum of their proliferative repertoire nor their postinjury distribution has been examined in vivo. Using a combination of different thymidine analogs and clonal analysis in a model of repetitive traumatic brain injury, we show for the first time that astrocytes that are quiescent following an initial injury can be coerced to proliferate after a repeated insult in the cerebral cortex grey matter. Interestingly, this process is promoted by invasion of monocytes to the injury site, as their genetic ablation (using CCR2-/- mice) increased the number of repetitively dividing astrocytes at the expense of newly proliferating astrocytes in repeatedly injured parenchyma. These differences profoundly affected both the distribution of astrocytes and recovery period for posttraumatic behavior deficits suggesting key roles of astrocyte self-renewal in brain repair after injury.
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Affiliation(s)
- Luisa Lange Canhos
- Physiological Genomics, Biomedical Center, Ludwig-Maximilians-University Munich, Munich, Germany.,Institute of Stem Cell Research, Helmholtz Zentrum Munich, Neuherberg, Germany.,Graduate School of Systemic Neurosciences (GSN-LMU), Ludwig-Maximilians-University Munich, Munich, Germany
| | - Muxin Chen
- Physiological Genomics, Biomedical Center, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Sven Falk
- Physiological Genomics, Biomedical Center, Ludwig-Maximilians-University Munich, Munich, Germany.,Institute of Stem Cell Research, Helmholtz Zentrum Munich, Neuherberg, Germany
| | - Bastian Popper
- Core Facility Animal Models, Biomedical Center, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Tobias Straub
- Core Facility Bioinformatics, Biomedical Center, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Magdalena Götz
- Physiological Genomics, Biomedical Center, Ludwig-Maximilians-University Munich, Munich, Germany.,Institute of Stem Cell Research, Helmholtz Zentrum Munich, Neuherberg, Germany.,Excellence Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Swetlana Sirko
- Physiological Genomics, Biomedical Center, Ludwig-Maximilians-University Munich, Munich, Germany.,Institute of Stem Cell Research, Helmholtz Zentrum Munich, Neuherberg, Germany
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20
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Frey S, Schieweck R, Forné I, Imhof A, Straub T, Popper B, Kiebler MA. Physical Activity Dynamically Regulates the Hippocampal Proteome along the Dorso-Ventral Axis. Int J Mol Sci 2020; 21:E3501. [PMID: 32429128 PMCID: PMC7278950 DOI: 10.3390/ijms21103501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 05/13/2020] [Accepted: 05/14/2020] [Indexed: 01/19/2023] Open
Abstract
The hippocampus is central for higher cognition and emotions. In patients suffering from neuropsychiatric or neurodegenerative diseases, hippocampal signaling is altered causing cognitive defects. Thus, therapeutic approaches aim at improving cognition by targeting the hippocampus. Enhanced physical activity (EPA) improves cognition in rodents and humans. A systematic screen, however, for expression changes in the hippocampus along the dorso-ventral axis is missing, which is a prerequisite for understanding molecular mechanisms. Here, we exploited label free mass spectrometry to detect proteomic changes in the hippocampus of male mice upon voluntary wheel running. To identify regional differences, we examined dorsal and ventral CA1, CA3 and dentate gyrus hippocampal subregions. We found metabolic enzymes and actin binding proteins, such as RhoA, being upregulated in the hippocampus upon EPA suggesting a coordination between metabolism and cytoskeleton remodeling; two pathways essential for synaptic plasticity. Strikingly, dorsal and ventral hippocampal subregions respond differentially to EPA. Together, our results provide new insight into proteomic adaptations driven by physical activity in mice. In addition, our results suggest that dorsal and ventral hippocampus, as well as hippocampal subregions themselves, contribute differently to this process. Our study therefore provides an important resource for studying hippocampal subregion diversity in response to EPA.
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Affiliation(s)
- Surina Frey
- Department for Cell Biology & Anatomy, Biomedical Center (BMC), Medical Faculty, Ludwig-Maximilians- University, 82152 Planegg-Martinsried, Germany; (S.F.); (R.S.)
| | - Rico Schieweck
- Department for Cell Biology & Anatomy, Biomedical Center (BMC), Medical Faculty, Ludwig-Maximilians- University, 82152 Planegg-Martinsried, Germany; (S.F.); (R.S.)
| | - Ignasi Forné
- Department for Molecular Biology (protein analysis unit), Biomedical Center (BMC), Ludwig-Maximilians-University, 82152 Planegg-Martinsried, Germany; (I.F.); (A.I.)
| | - Axel Imhof
- Department for Molecular Biology (protein analysis unit), Biomedical Center (BMC), Ludwig-Maximilians-University, 82152 Planegg-Martinsried, Germany; (I.F.); (A.I.)
| | - Tobias Straub
- Department for Molecular Biology (Core facility bioinformatics), Biomedical Center (BMC), Ludwig-Maximilians-University, 82152 Planegg-Martinsried, Germany;
| | - Bastian Popper
- Department for Cell Biology & Anatomy, Biomedical Center (BMC), Medical Faculty, Ludwig-Maximilians- University, 82152 Planegg-Martinsried, Germany; (S.F.); (R.S.)
- Core Facility Animal Models, Biomedical Center (BMC), Medical Faculty, Ludwig-Maximilians-University, 82152 Munich, Germany
- Institute of Pathology, School of Medicine, Technical University of Munich, 81675 Munich, Germany
| | - Michael A. Kiebler
- Department for Cell Biology & Anatomy, Biomedical Center (BMC), Medical Faculty, Ludwig-Maximilians- University, 82152 Planegg-Martinsried, Germany; (S.F.); (R.S.)
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21
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Constanze B, Popper B, Aggarwal BB, Shakibaei M. Evidence that TNF-β suppresses osteoblast differentiation of mesenchymal stem cells and resveratrol reverses it through modulation of NF-κB, Sirt1 and Runx2. Cell Tissue Res 2020; 381:83-98. [PMID: 32140928 DOI: 10.1007/s00441-020-03188-8] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 02/13/2020] [Indexed: 12/16/2022]
Abstract
It has been established that inflammation plays an important role in bone formation and bone loss. Although a lot is known about the role of TNF-α in bone health, very little is understood about TNF-β, also called lymphotoxin. In this report, we examine the effect of TNF-β on osteogenic differentiation of mesenchymal stem cells (MSCs) and its modulation by resveratrol. Monolayer and high-density cultures of MSCs were treated with osteogenic induction medium with/without TNF-β, Sirt1 inhibitor nicotinamide (NAM), antisense oligonucleotides against Sirt1 (ASO) and/or Sirt1 stimulator resveratrol. We found that TNF-β inhibits, in a similar way to NAM or Sirt1-ASO, the early stage of osteogenic differentiation of MSCs and this was accompanied with downregulation of bone-specific matrix, β1-integrin, Runx2 and with upregulation of NF-κB phosphorylation and NF-κB-regulated gene products involved in the inflammatory, degradative processes and apoptosis. However, resveratrol reversed TNF-β- and NAM-suppressed MSCs osteogenesis by activation of Sirt1 and Runx2 that led to osteoblast differentiation. Furthermore, downregulation of Sirt1 by mRNA inhibited the effect of resveratrol, highlighting the important impact of this enzyme in the TNF-β signaling pathway. Finally, resveratrol was able to manifest its effect both by suppression of TNF-β-induced NF-κB and through direct activation of the Sirt1 and Runx2 pathway. Thus, through these studies, we present a mechanism by which a T cell-derived cytokine, TNF-β can affect bone formation through modulation of MSCs differentiation that involves NF-κB, Sirt1, Runx2 and resveratrol reversed TNF-β-promoted impairments in MSCs osteogenesis.
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Affiliation(s)
- Buhrmann Constanze
- Musculoskeletal Research Group and Tumour Biology, Chair of Vegetative Anatomy, Faculty of Medicine, Institute of Anatomy, Ludwig-Maximilian-University Munich, Pettenkoferstrasse 11, 80336, Munich, Germany
| | - Bastian Popper
- Biomedical Center, Core facility animal models, Ludwig-Maximilian-University Munich, 82152, Martinsried, Germany.,Institute of Pathology, School of Medicine, Technical University of Munich, 81675, Munich, Germany
| | | | - Mehdi Shakibaei
- Musculoskeletal Research Group and Tumour Biology, Chair of Vegetative Anatomy, Faculty of Medicine, Institute of Anatomy, Ludwig-Maximilian-University Munich, Pettenkoferstrasse 11, 80336, Munich, Germany.
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22
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Popper B, Rammer MT, Gasparitsch M, Singer T, Keller U, Döring Y, Lange-Sperandio B. Neonatal obstructive nephropathy induces necroptosis and necroinflammation. Sci Rep 2019; 9:18600. [PMID: 31819111 PMCID: PMC6901532 DOI: 10.1038/s41598-019-55079-w] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Accepted: 11/21/2019] [Indexed: 12/15/2022] Open
Abstract
Urinary tract obstruction during kidney development causes tubular apoptosis, tubular necrosis, and interstitial inflammation. Necroptosis is a subtype of programmed necrosis mediated by the receptor-interacting serine/threonine-protein kinase-3 (RIPK3) and the pseudokinase mixed lineage kinase domain-like (MLKL). Necrosis induces inflammation and stimulates cell death in an autoamplification loop named necroinflammation. Here, we studied necroptosis and necroinflammation in obstructive nephropathy induced by unilateral ureteral obstruction (UUO) in neonatal C57Bl/6J mice. Ureteral obstruction induced tubular dilatation, tubular basement membrane thickening, cast formation, and increased expression of kidney injury molecule-1 (KIM-1). Morphological investigations showed either apoptotic or necrotic cells in the tubular compartment. Biochemical analysis revealed increased caspase-8 activity and upregulation of RIPK3 as well as phosphorylated-MLKL in UUO-kidneys. Pro-inflammatory cytokines (IL-1α, INF-γ, TNF-α) were upregulated following UUO. Taken together we show that necroptosis and necroinflammation are accompanied phenomena in neonatal kidneys with obstruction. These findings may help to develop novel strategies to treat congenital obstructive nephropathy.
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Affiliation(s)
- Bastian Popper
- Biomedical Center, Core Faciliy Animal Models, Ludwig-Maximilians university, 82152, Martinsried, Germany.,Institute of Pathology, School of Medicine, Technical University of Munich, 81675, Munich, Germany
| | - Marian Theodor Rammer
- Dr. v. Hauner Children's Hospital, Division of Pediatric Nephrology, Ludwig-Maximilians-University, 80337, Munich, Germany
| | - Mojca Gasparitsch
- Dr. v. Hauner Children's Hospital, Division of Pediatric Nephrology, Ludwig-Maximilians-University, 80337, Munich, Germany
| | - Teresa Singer
- Dr. v. Hauner Children's Hospital, Division of Pediatric Nephrology, Ludwig-Maximilians-University, 80337, Munich, Germany
| | - Ursula Keller
- Dr. v. Hauner Children's Hospital, Division of Pediatric Nephrology, Ludwig-Maximilians-University, 80337, Munich, Germany
| | - Yvonne Döring
- Institute for Cardiovascular Prevention, Ludwig-Maximilians-University, 80336, Munich, Germany.,Division of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Bärbel Lange-Sperandio
- Dr. v. Hauner Children's Hospital, Division of Pediatric Nephrology, Ludwig-Maximilians-University, 80337, Munich, Germany.
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Bartel K, Pein H, Popper B, Schmitt S, Janaki-Raman S, Schulze A, Lengauer F, Koeberle A, Werz O, Zischka H, Müller R, Vollmar AM, von Schwarzenberg K. Connecting lysosomes and mitochondria - a novel role for lipid metabolism in cancer cell death. Cell Commun Signal 2019; 17:87. [PMID: 31358011 PMCID: PMC6664539 DOI: 10.1186/s12964-019-0399-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 07/15/2019] [Indexed: 12/29/2022] Open
Abstract
Background The understanding of lysosomes has been expanded in recent research way beyond their view as cellular trash can. Lysosomes are pivotal in regulating metabolism, endocytosis and autophagy and are implicated in cancer. Recently it was discovered that the lysosomal V-ATPase, which is known to induce apoptosis, interferes with lipid metabolism in cancer, yet the interplay between these organelles is poorly understood. Methods LC-MS/MS analysis was performed to investigate lipid distribution in cells. Cell survival and signaling pathways were analyzed by means of cell biological methods (qPCR, Western Blot, flow cytometry, CellTiter-Blue). Mitochondrial structure was analyzed by confocal imaging and electron microscopy, their function was determined by flow cytometry and seahorse measurements. Results Our data reveal that interfering with lysosomal function changes composition and subcellular localization of triacylglycerids accompanied by an upregulation of PGC1α and PPARα expression, master regulators of energy and lipid metabolism. Furthermore, cardiolipin content is reduced driving mitochondria into fission, accompanied by a loss of membrane potential and reduction in oxidative capacity, which leads to a deregulation in cellular ROS and induction of mitochondria-driven apoptosis. Additionally, cells undergo a metabolic shift to glutamine dependency, correlated with the fission phenotype and sensitivity to lysosomal inhibition, most prominent in Ras mutated cells. Conclusion This study sheds mechanistic light on a largely uninvestigated triangle between lysosomes, lipid metabolism and mitochondrial function. Insight into this organelle crosstalk increases our understanding of mitochondria-driven cell death. Our findings furthermore provide a first hint on a connection of Ras pathway mutations and sensitivity towards lysosomal inhibitors. Graphical Abstract ![]()
Electronic supplementary material The online version of this article (10.1186/s12964-019-0399-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Karin Bartel
- Department of Pharmacy, Pharmaceutical Biology, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, Munich, Germany.
| | - Helmut Pein
- Chair of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University Jena, Philosophenweg 14, 07743, Jena, Germany
| | - Bastian Popper
- Department of Anatomy and Cell Biology, Biomedical Center, Ludwig-Maximilians-Universität München, Grosshaderner Strasse 9, 82152, Planegg-Martinsried, Germany
| | - Sabine Schmitt
- Institute of Toxicology and Environmental Hygiene, Technical University Munich, School of Medicine, 80802, Munich, Germany
| | - Sudha Janaki-Raman
- Department of Biochemistry and Molecular Biology, Theodor-Boveri-Institute, Biocenter, Am Hubland, 97074, Würzburg, Germany
| | - Almut Schulze
- Department of Biochemistry and Molecular Biology, Theodor-Boveri-Institute, Biocenter, Am Hubland, 97074, Würzburg, Germany
| | - Florian Lengauer
- Department of Pharmacy, Pharmaceutical Biology, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, Munich, Germany
| | - Andreas Koeberle
- Chair of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University Jena, Philosophenweg 14, 07743, Jena, Germany
| | - Oliver Werz
- Chair of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University Jena, Philosophenweg 14, 07743, Jena, Germany
| | - Hans Zischka
- Institute of Toxicology and Environmental Hygiene, Technical University Munich, School of Medicine, 80802, Munich, Germany.,Institute of Molecular Toxicology and Pharmacology, Helmholtz Center Munich, German Research Center for Environmental Health, 85764, Neuherberg, Germany
| | - Rolf Müller
- Helmholtz Centre for Infection Research and Department of Pharmaceutical Biotechnology, Helmholtz Institute for Pharmaceutical Research Saarland, Saarland University, PO 151150, Universitätscampus E8 1, 66123, Saarbrücken, Germany
| | - Angelika M Vollmar
- Department of Pharmacy, Pharmaceutical Biology, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, Munich, Germany
| | - Karin von Schwarzenberg
- Department of Pharmacy, Pharmaceutical Biology, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, Munich, Germany.
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24
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Mulay SR, Honarpisheh MM, Foresto-Neto O, Shi C, Desai J, Zhao ZB, Marschner JA, Popper B, Buhl EM, Boor P, Linkermann A, Liapis H, Bilyy R, Herrmann M, Romagnani P, Belevich I, Jokitalo E, Becker JU, Anders HJ. Mitochondria Permeability Transition versus Necroptosis in Oxalate-Induced AKI. J Am Soc Nephrol 2019; 30:1857-1869. [PMID: 31296606 DOI: 10.1681/asn.2018121218] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Accepted: 05/16/2019] [Indexed: 11/03/2022] Open
Abstract
BACKGROUND Serum oxalate levels suddenly increase with certain dietary exposures or ethylene glycol poisoning and are a well known cause of AKI. Established contributors to oxalate crystal-induced renal necroinflammation include the NACHT, LRR and PYD domains-containing protein-3 (NLRP3) inflammasome and mixed lineage kinase domain-like (MLKL) protein-dependent tubule necroptosis. These studies examined the role of a novel form of necrosis triggered by altered mitochondrial function. METHODS To better understand the molecular pathophysiology of oxalate-induced AIK, we conducted in vitro studies in mouse and human kidney cells and in vivo studies in mice, including wild-type mice and knockout mice deficient in peptidylprolyl isomerase F (Ppif) or deficient in both Ppif and Mlkl. RESULTS Crystals of calcium oxalate, monosodium urate, or calcium pyrophosphate dihydrate, as well as silica microparticles, triggered cell necrosis involving PPIF-dependent mitochondrial permeability transition. This process involves crystal phagocytosis, lysosomal cathepsin leakage, and increased release of reactive oxygen species. Mice with acute oxalosis displayed calcium oxalate crystals inside distal tubular epithelial cells associated with mitochondrial changes characteristic of mitochondrial permeability transition. Mice lacking Ppif or Mlkl or given an inhibitor of mitochondrial permeability transition displayed attenuated oxalate-induced AKI. Dual genetic deletion of Ppif and Mlkl or pharmaceutical inhibition of necroptosis was partially redundant, implying interlinked roles of these two pathways of regulated necrosis in acute oxalosis. Similarly, inhibition of mitochondrial permeability transition suppressed crystal-induced cell death in primary human tubular epithelial cells. PPIF and phosphorylated MLKL localized to injured tubules in diagnostic human kidney biopsies of oxalosis-related AKI. CONCLUSIONS Mitochondrial permeability transition-related regulated necrosis and necroptosis both contribute to oxalate-induced AKI, identifying PPIF as a potential molecular target for renoprotective intervention.
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Affiliation(s)
- Shrikant Ramesh Mulay
- Division of Nephrology, Department of Medicine IV, University Hospital, LMU Munich, Munich, Germany; .,Pharmacology Division, CSIR-Central Drug Research Institute, Lucknow, India
| | - Mohsen M Honarpisheh
- Division of Nephrology, Department of Medicine IV, University Hospital, LMU Munich, Munich, Germany
| | - Orestes Foresto-Neto
- Division of Nephrology, Department of Medicine IV, University Hospital, LMU Munich, Munich, Germany
| | - Chongxu Shi
- Division of Nephrology, Department of Medicine IV, University Hospital, LMU Munich, Munich, Germany
| | - Jyaysi Desai
- Division of Nephrology, Department of Medicine IV, University Hospital, LMU Munich, Munich, Germany
| | - Zhi Bo Zhao
- Division of Nephrology, Department of Medicine IV, University Hospital, LMU Munich, Munich, Germany
| | - Julian A Marschner
- Division of Nephrology, Department of Medicine IV, University Hospital, LMU Munich, Munich, Germany
| | - Bastian Popper
- Biomedical Center, Core Facility Animal Models, Ludwig Maximilian University, Planegg-Martinsried, Germany
| | - Ewa Miriam Buhl
- Division of Nephrology, Institute of Pathology, Rheinisch-Westfälische Technische Hochschule University of Aachen, Aachen, Germany
| | - Peter Boor
- Division of Nephrology, Institute of Pathology, Rheinisch-Westfälische Technische Hochschule University of Aachen, Aachen, Germany
| | - Andreas Linkermann
- Division of Nephrology, Department of Internal Medicine III, University Hospital Carl Gustav Carus at the Technische Universität Dresden, Dresden, Germany
| | - Helen Liapis
- Department of Pathology and Immunology, School of Medicine, Washington University in St. Louis, St. Louis, Missouri.,Arkana Laboratories, Little Rock, Arkansas
| | - Rostyslav Bilyy
- Department of Histology, Cytology, and Embryology, Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
| | - Martin Herrmann
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Paola Romagnani
- Excellence Centre for Research, Transfer and High Education for the Development of De Novo Therapies, University of Florence, Florence, Italy
| | - Ilya Belevich
- Electron Microscopy Unit, Institute of Biotechnology, University of Helsinki, Helsinki, Finland; and
| | - Eija Jokitalo
- Electron Microscopy Unit, Institute of Biotechnology, University of Helsinki, Helsinki, Finland; and
| | - Jan U Becker
- Institute of Pathology, University of Cologne, Cologne, Germany
| | - Hans-Joachim Anders
- Division of Nephrology, Department of Medicine IV, University Hospital, LMU Munich, Munich, Germany;
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25
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Buhrmann C, Yazdi M, Popper B, Shayan P, Goel A, Aggarwal BB, Shakibaei M. Evidence that TNF-β induces proliferation in colorectal cancer cells and resveratrol can down-modulate it. Exp Biol Med (Maywood) 2019; 244:1-12. [PMID: 30661394 DOI: 10.1177/1535370218824538] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
IMPACT STATEMENT The mechanism by which natural products such as resveratrol suppresses TNF-β-promoted tumor cell proliferation, invasion, and colony formation is unknown. In this study, we explored for the first time the effect of resveratrol on the proinflammatory cytokine TNF-β-, compared to TNF-α-stimulated proliferative and pro-inflammatory signaling in HCT116 cells. Our findings suggest that expression of TNF-β and TNF-β-receptor, like TNF-α, can lead to activation of inflammatory transcription factor (NF-κB) and NF-κB-regulated gene biomarkers, which are involved in the promotion of cancer proliferation, invasion, metastasis, and cell survival of tumor. Resveratrol can block TNF-β/TNF-β-receptor-induced activation of NF-κB, NF-κB-modulated gene products, and inhibition of caspase-3 cleavage. These results highlight the therapeutic effect of resveratrol-mediated anti-tumor activity by multitargeting cellular signaling pathways.
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Affiliation(s)
- Constanze Buhrmann
- 1 Musculoskeletal Research Group and Tumor Biology, Chair of Vegetative Anatomy, Faculty of Medicine, Ludwig-Maximilian-University Munich, Munich 80336, Germany
| | - Mina Yazdi
- 1 Musculoskeletal Research Group and Tumor Biology, Chair of Vegetative Anatomy, Faculty of Medicine, Ludwig-Maximilian-University Munich, Munich 80336, Germany
| | - Bastian Popper
- 2 Biomedical Center, Ludwig-Maximilian-University Munich, Martinsried 82152, Germany
| | - Parviz Shayan
- 3 Department of Parasitology, Faculty of Veterinary Medicine, University of Tehran, Tehran 141556453, Iran
| | - Ajay Goel
- 4 Center for Gastrointestinal Research; Baylor Scott & White Research Institute and Charles A Sammons Cancer Center, Baylor University Medical Center, Dallas, TX 75246, USA
| | | | - Mehdi Shakibaei
- 1 Musculoskeletal Research Group and Tumor Biology, Chair of Vegetative Anatomy, Faculty of Medicine, Ludwig-Maximilian-University Munich, Munich 80336, Germany
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26
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Einer C, Leitzinger C, Lichtmannegger J, Eberhagen C, Rieder T, Borchard S, Wimmer R, Denk G, Popper B, Neff F, Polishchuk EV, Polishchuk RS, Hauck SM, von Toerne C, Müller JC, Karst U, Baral BS, DiSpirito AA, Kremer AE, Semrau J, Weiss KH, Hohenester S, Zischka H. A High-Calorie Diet Aggravates Mitochondrial Dysfunction and Triggers Severe Liver Damage in Wilson Disease Rats. Cell Mol Gastroenterol Hepatol 2018; 7:571-596. [PMID: 30586623 PMCID: PMC6407159 DOI: 10.1016/j.jcmgh.2018.12.005] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 12/13/2018] [Accepted: 12/13/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS In Wilson disease, ATP7B mutations impair copper excretion into bile. Hepatic copper accumulation may induce mild to moderate chronic liver damage or even acute liver failure. Etiologic factors for this heterogeneous phenotype remain enigmatic. Liver steatosis is a frequent finding in Wilson disease patients, suggesting that impaired copper homeostasis is linked with liver steatosis. Hepatic mitochondrial function is affected negatively both by copper overload and steatosis. Therefore, we addressed the question of whether a steatosis-promoting high-calorie diet aggravates liver damage in Wilson disease via amplified mitochondrial damage. METHODS Control Atp7b+/- and Wilson disease Atp7b-/- rats were fed either a high-calorie diet (HCD) or a normal diet. Copper chelation using the high-affinity peptide methanobactin was used in HCD-fed Atp7b-/- rats to test for therapeutic reversal of mitochondrial copper damage. RESULTS In comparison with a normal diet, HCD feeding of Atp7b-/- rats resulted in a markedly earlier onset of clinically apparent hepatic injury. Strongly increased mitochondrial copper accumulation was observed in HCD-fed Atp7b-/- rats, correlating with severe liver injury. Mitochondria presented with massive structural damage, increased H2O2 emergence, and dysfunctional adenosine triphosphate production. Hepatocellular injury presumably was augmented as a result of oxidative stress. Reduction of mitochondrial copper by methanobactin significantly reduced mitochondrial impairment and ameliorated liver damage. CONCLUSIONS A high-calorie diet severely aggravates hepatic mitochondrial and hepatocellular damage in Wilson disease rats, causing an earlier onset of the disease and enhanced disease progression.
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Affiliation(s)
- Claudia Einer
- Institute of Molecular Toxicology and Pharmacology, Helmholtz Center Munich, German Research Center for Environmental Health, Neuherberg, Germany; Department of Medicine II, University Hospital, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Christin Leitzinger
- Institute of Molecular Toxicology and Pharmacology, Helmholtz Center Munich, German Research Center for Environmental Health, Neuherberg, Germany
| | - Josef Lichtmannegger
- Institute of Molecular Toxicology and Pharmacology, Helmholtz Center Munich, German Research Center for Environmental Health, Neuherberg, Germany
| | - Carola Eberhagen
- Institute of Molecular Toxicology and Pharmacology, Helmholtz Center Munich, German Research Center for Environmental Health, Neuherberg, Germany
| | - Tamara Rieder
- Institute of Toxicology and Environmental Hygiene, Technical University Munich, Munich, Germany
| | - Sabine Borchard
- Institute of Molecular Toxicology and Pharmacology, Helmholtz Center Munich, German Research Center for Environmental Health, Neuherberg, Germany
| | - Ralf Wimmer
- Department of Medicine II, University Hospital, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Gerald Denk
- Department of Medicine II, University Hospital, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Bastian Popper
- Department of Anatomy and Cell Biology, Biomedical Center, Ludwig-Maximilians-University, Planegg-Martinsried, Germany; Core Facility Animal Models, Biomedical Center, Ludwig-Maximilians-University, Planegg-Martinsried, Germany
| | - Frauke Neff
- Institute of Pathology, Helmholtz Center Munich, German Research Center for Environmental Health, Neuherberg, Germany
| | | | | | - Stefanie M Hauck
- Research Unit Protein Science, Helmholtz Center Munich, German Research Center for Environmental Health, Neuherberg, Germany
| | - Christine von Toerne
- Research Unit Protein Science, Helmholtz Center Munich, German Research Center for Environmental Health, Neuherberg, Germany
| | | | - Uwe Karst
- Institute of Inorganic and Analytical Chemistry, University of Münster, Münster, Germany
| | - Bipin S Baral
- Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, Iowa
| | - Alan A DiSpirito
- Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, Iowa
| | - Andreas E Kremer
- Department of Medicine I, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany
| | - Jeremy Semrau
- Department of Civil and Environmental Engineering, University of Michigan, Ann Arbor, Michigan
| | - Karl Heinz Weiss
- Department of Gastroenterology, Internal Medicine IV, University Hospital Heidelberg, Heidelberg, Germany
| | - Simon Hohenester
- Department of Medicine II, University Hospital, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Hans Zischka
- Institute of Molecular Toxicology and Pharmacology, Helmholtz Center Munich, German Research Center for Environmental Health, Neuherberg, Germany; Institute of Toxicology and Environmental Hygiene, Technical University Munich, Munich, Germany.
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27
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Buhrmann C, Yazdi M, Popper B, Shayan P, Goel A, Aggarwal BB, Shakibaei M. Resveratrol Chemosensitizes TNF-β-Induced Survival of 5-FU-Treated Colorectal Cancer Cells. Nutrients 2018; 10:nu10070888. [PMID: 30002278 PMCID: PMC6073304 DOI: 10.3390/nu10070888] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 07/06/2018] [Accepted: 07/09/2018] [Indexed: 12/11/2022] Open
Abstract
Objective: Resveratrol, a safe and multitargeted natural agent, has been linked with inhibition of survival and invasion of tumor cells. Tumor Necrosis Factor-β (TNF-β) (Lymphotoxin α) is known as an inflammatory cytokine, however, the underlying mechanisms for its pro-carcinogenic effects and whether resveratrol can suppress these effects in the tumor microenvironment are poorly understood. Methods: We investigated whether resveratrol modulates the effects of 5-Fluorouracil (5-FU) and TNF-β on the malignant potential of human colorectal cancer (CRC) cells (HCT116) and their corresponding isogenic 5-FU-chemoresistant derived clones (HCT116R) in 3D-alginate tumor microenvironment. Results: CRC cells cultured in alginate were able to migrate from alginate and the numbers of migrated cells were significantly increased in the presence of TNF-β, similar to TNF-α, and dramatically decreased by resveratrol. We found that TNF-β promoted chemoresistance in CRC cells to 5-FU compared to control cultures and resveratrol chemosensitizes TNF-β-induced increased capacity for survival and invasion of HCT116 and HCT116R cells to 5-FU. Furthermore, TNF-β induced a more pronounced cancer stem cell-like (CSC) phenotype (CD133, CD44, ALDH1) and resveratrol suppressed formation of CSC cells in two different CRC cells and this was accompanied with a significant increase in apoptosis (caspase-3). It is noteworthy that resveratrol strongly suppressed TNF-β-induced activation of tumor-promoting factors (NF-κB, MMP-9, CXCR4) and epithelial-to-mesenchymal-transition-factors (increased vimentin and slug, decreased E-cadherin) in CRC cells. Conclusion: Our results clearly demonstrate for the first time that resveratrol modulates the TNF-β signaling pathway, induces apoptosis, suppresses NF-κB activation, epithelial-to-mesenchymal-transition (EMT), CSCs formation and chemosensitizes CRC cells to 5-FU in a tumor microenvironment.
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Affiliation(s)
- Constanze Buhrmann
- Musculoskeletal Research Group and Tumour Biology, Chair of Vegetative Anatomy, Institute of Anatomy, Faculty of Medicine, Ludwig-Maximilian-University Munich, Pettenkoferstrasse 11, D-80336 Munich, Germany.
| | - Mina Yazdi
- Musculoskeletal Research Group and Tumour Biology, Chair of Vegetative Anatomy, Institute of Anatomy, Faculty of Medicine, Ludwig-Maximilian-University Munich, Pettenkoferstrasse 11, D-80336 Munich, Germany.
| | - Bastian Popper
- Biomedical Center, Core facility animal models, Ludwig-Maximilian-University Munich, D-82152 Martinsried, Germany.
| | - Parviz Shayan
- Department of Parasitology, Faculty of Veterinary Medicine, University of Tehran, Tehran 141556453, Iran.
| | - Ajay Goel
- Center for Gastrointestinal Research; Center for Translational Genomics and Oncology, Baylor Scott & White Research Institute and Charles A Sammons Cancer Center, Baylor University Medical Center, Dallas, TX 75246, USA.
| | | | - Mehdi Shakibaei
- Musculoskeletal Research Group and Tumour Biology, Chair of Vegetative Anatomy, Institute of Anatomy, Faculty of Medicine, Ludwig-Maximilian-University Munich, Pettenkoferstrasse 11, D-80336 Munich, Germany.
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28
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Desai J, Foresto-Neto O, Honarpisheh M, Steiger S, Nakazawa D, Popper B, Buhl EM, Boor P, Mulay SR, Anders HJ. Author Correction: Particles of different sizes and shapes induce neutrophil necroptosis followed by the release of neutrophil extracellular trap-like chromatin. Sci Rep 2018; 8:6663. [PMID: 29691453 PMCID: PMC5915553 DOI: 10.1038/s41598-018-24793-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Affiliation(s)
- Jyaysi Desai
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Orestes Foresto-Neto
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Mohsen Honarpisheh
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Stefanie Steiger
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Daigo Nakazawa
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Bastian Popper
- Department of Anatomy and Cell Biology, Biomedical Center, Ludwig-Maximilians Universität, Munich, Germany
| | - Eva Miriam Buhl
- Institut für Pathologie, Universitätsklinikum Aachen, Aachen, Germany.,Institute of Pathology & Department of Nephrology, University Clinic of the RWTH Aachen, Aachen, Germany
| | - Peter Boor
- Institut für Pathologie, Universitätsklinikum Aachen, Aachen, Germany
| | - Shrikant R Mulay
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Hans-Joachim Anders
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany.
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29
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Subramanian V, Borchard S, Azimzadeh O, Sievert W, Merl-Pham J, Mancuso M, Pasquali E, Multhoff G, Popper B, Zischka H, Atkinson MJ, Tapio S. PPARα Is Necessary for Radiation-Induced Activation of Noncanonical TGFβ Signaling in the Heart. J Proteome Res 2018; 17:1677-1689. [PMID: 29560722 DOI: 10.1021/acs.jproteome.8b00001] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
High-dose ionizing radiation is known to induce adverse effects such as inflammation and fibrosis in the heart. Transcriptional regulators PPARα and TGFβ are known to be involved in this radiation response. PPARα, an anti-inflammatory transcription factor controlling cardiac energy metabolism, is inactivated by irradiation. The pro-inflammatory and pro-fibrotic TGFβ is activated by irradiation via SMAD-dependent and SMAD-independent pathways. The goal of this study was to investigate how altering the level of PPARα influences the radiation response of these signaling pathways. For this purpose, we used genetically modified C57Bl/6 mice with wild type (+/+), heterozygous (+/-) or homozygous (-/-) PPARα genotype. Mice were locally irradiated to the heart using doses of 8 or 16 Gy; the controls were sham-irradiated. The heart tissue was investigated using label-free proteomics 20 weeks after the irradiation and the predicted pathways were validated using immunoblotting, ELISA, and immunohistochemistry. The heterozygous PPARα mice showed most radiation-induced changes in the cardiac proteome, whereas the homozygous PPARα mice showed the least changes. Irradiation induced SMAD-dependent TGFβ signaling independently of the PPARα status, but the presence of PPARα was necessary for the activation of the SMAD-independent pathway. These data indicate a central role of PPARα in cardiac response to ionizing radiation.
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Affiliation(s)
| | | | | | - Wolfgang Sievert
- Center for Translational Cancer Research (TranslaTUM), Radiation Immuno Oncology Group , Campus Klinikum rechts der Isar, Technical University of Munich , Munich 81675 , Germany
| | | | - Mariateresa Mancuso
- Laboratory of Radiation Biology and Biomedicine , Agenzia Nazionale per le Nuove Tecnologie, l'Energia e lo Sviluppo Economico Sostenibile (ENEA) , Rome 00196 , Italy
| | - Emanuela Pasquali
- Laboratory of Radiation Biology and Biomedicine , Agenzia Nazionale per le Nuove Tecnologie, l'Energia e lo Sviluppo Economico Sostenibile (ENEA) , Rome 00196 , Italy
| | - Gabriele Multhoff
- Center for Translational Cancer Research (TranslaTUM), Radiation Immuno Oncology Group , Campus Klinikum rechts der Isar, Technical University of Munich , Munich 81675 , Germany
| | - Bastian Popper
- Department of Cell Biology and Core Facility Animal Models (CAM), Biomedical Center , Ludwig-Maximilians University Munich , Planegg 80539 , Germany
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30
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Popper B, Demleitner A, Bolivar VJ, Kusek G, Snyder-Keller A, Schieweck R, Temple S, Kiebler MA. Staufen2 deficiency leads to impaired response to novelty in mice. Neurobiol Learn Mem 2018; 150:107-115. [PMID: 29496644 DOI: 10.1016/j.nlm.2018.02.027] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 01/25/2018] [Accepted: 02/22/2018] [Indexed: 12/12/2022]
Abstract
Staufen2 (Stau2) is a double-stranded RNA-binding protein (RBP) involved in posttranscriptional gene expression control in neurons. In flies, staufen contributes to learning and long-term memory formation. To study the impact of mammalian Stau2 on behavior, we generated a novel gene-trap mouse model that yields significant constitutive downregulation of Stau2 (Stau2GT). In order to investigate the effect of Stau2 downregulation on hippocampus-dependent behavior, we performed a battery of behavioral assays, i.e. open field, novel object recognition/location (NOR/L) and Barnes maze. Stau2GT mice displayed reduced locomotor activity in the open field and altered novelty preference in the NOR and NOL paradigms. Adult Stau2GT male mice failed to discriminate between familiar and newly introduced objects but showed enhanced spatial novelty detection. Additionally, we observed deficits in discriminating different spatial contexts in a Barnes maze assay. Together, our data suggest that Stau2 contributes to novelty preference and explorative behavior that is a driver for proper spatial learning in mice.
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Affiliation(s)
- Bastian Popper
- Biomedical Center (BMC), Department for Cell Biology & Anatomy, Medical Faculty, Ludwig-Maximilians-University, Munich, Germany; Biomedical Center (BMC), Core Facility Animal Models, Ludwig-Maximilians-University, Munich, Germany
| | - Antonia Demleitner
- Biomedical Center (BMC), Department for Cell Biology & Anatomy, Medical Faculty, Ludwig-Maximilians-University, Munich, Germany
| | - Valerie J Bolivar
- Wadsworth Center, New York State Department of Health, Albany, NY, USA; Department of Biomedical Sciences, University at Albany School of Public Health, State University of New York, Albany, NY, USA
| | - Gretchen Kusek
- Neural Stem Cell Institute, Regenerative Research Foundation, Rensselaer, NY, USA
| | - Abigail Snyder-Keller
- Wadsworth Center, New York State Department of Health, Albany, NY, USA; Department of Biomedical Sciences, University at Albany School of Public Health, State University of New York, Albany, NY, USA
| | - Rico Schieweck
- Biomedical Center (BMC), Department for Cell Biology & Anatomy, Medical Faculty, Ludwig-Maximilians-University, Munich, Germany.
| | - Sally Temple
- Neural Stem Cell Institute, Regenerative Research Foundation, Rensselaer, NY, USA
| | - Michael A Kiebler
- Biomedical Center (BMC), Department for Cell Biology & Anatomy, Medical Faculty, Ludwig-Maximilians-University, Munich, Germany.
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31
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Matenaers C, Popper B, Rieger A, Wanke R, Blutke A. Practicable methods for histological section thickness measurement in quantitative stereological analyses. PLoS One 2018; 13:e0192879. [PMID: 29444158 PMCID: PMC5812658 DOI: 10.1371/journal.pone.0192879] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Accepted: 01/31/2018] [Indexed: 11/19/2022] Open
Abstract
The accuracy of quantitative stereological analysis tools such as the (physical) disector method substantially depends on the precise determination of the thickness of the analyzed histological sections. One conventional method for measurement of histological section thickness is to re-embed the section of interest vertically to its original section plane. The section thickness is then measured in a subsequently prepared histological section of this orthogonally re-embedded sample. However, the orthogonal re-embedding (ORE) technique is quite work- and time-intensive and may produce inaccurate section thickness measurement values due to unintentional slightly oblique (non-orthogonal) positioning of the re-embedded sample-section. Here, an improved ORE method is presented, allowing for determination of the factual section plane angle of the re-embedded section, and correction of measured section thickness values for oblique (non-orthogonal) sectioning. For this, the analyzed section is mounted flat on a foil of known thickness (calibration foil) and both the section and the calibration foil are then vertically (re-)embedded. The section angle of the re-embedded section is then calculated from the deviation of the measured section thickness of the calibration foil and its factual thickness, using basic geometry. To find a practicable, fast, and accurate alternative to ORE, the suitability of spectral reflectance (SR) measurement for determination of plastic section thicknesses was evaluated. Using a commercially available optical reflectometer (F20, Filmetrics®, USA), the thicknesses of 0.5 μm thick semi-thin Epon (glycid ether)-sections and of 1–3 μm thick plastic sections (glycolmethacrylate/ methylmethacrylate, GMA/MMA), as regularly used in physical disector analyses, could precisely be measured within few seconds. Compared to the measured section thicknesses determined by ORE, SR measures displayed less than 1% deviation. Our results prove the applicability of SR to efficiently provide accurate section thickness measurements as a prerequisite for reliable estimates of dependent quantitative stereological parameters.
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Affiliation(s)
- Cyrill Matenaers
- Institute for Veterinary Pathology at the Center for Clinical Veterinary Medicine, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Bastian Popper
- Department of Anatomy and Cell Biology, Biomedical Center (BMC), Medical Faculty, Ludwig-Maximilians-Universität München, Martinsried, Germany
| | - Alexandra Rieger
- Institute for Veterinary Pathology at the Center for Clinical Veterinary Medicine, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Rüdiger Wanke
- Institute for Veterinary Pathology at the Center for Clinical Veterinary Medicine, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Andreas Blutke
- Institute for Veterinary Pathology at the Center for Clinical Veterinary Medicine, Ludwig-Maximilians-Universität München, Munich, Germany
- * E-mail:
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32
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Honarpisheh M, Foresto-Neto O, Desai J, Steiger S, Gómez LA, Popper B, Boor P, Anders HJ, Mulay SR. Phagocytosis of environmental or metabolic crystalline particles induces cytotoxicity by triggering necroptosis across a broad range of particle size and shape. Sci Rep 2017; 7:15523. [PMID: 29138474 PMCID: PMC5686194 DOI: 10.1038/s41598-017-15804-9] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 11/02/2017] [Indexed: 01/09/2023] Open
Abstract
In crystallopathies, crystals or crystalline particles of environmental and metabolic origin deposit within tissues, induce inflammation, injury and cell death and eventually lead to organ-failure. The NLRP3-inflammasome is involved in mediating crystalline particles-induced inflammation, but pathways leading to cell death are still unknown. Here, we have used broad range of intrinsic and extrinsic crystal- or crystalline particle-sizes and shapes, e.g. calcium phosphate, silica, titanium dioxide, cholesterol, calcium oxalate, and monosodium urate. As kidney is commonly affected by crystallopathies, we used human and murine renal tubular cells as a model system. We showed that all of the analysed crystalline particles induce caspase-independent cell death. Deficiency of MLKL, siRNA knockdown of RIPK3, or inhibitors of necroptosis signaling e.g. RIPK-1 inhibitor necrostatin-1s, RIPK3 inhibitor dabrafenib, and MLKL inhibitor necrosulfonamide, partially protected tubular cells from crystalline particles cytotoxicity. Furthermore, we identify phagocytosis of crystalline particles as an upstream event in their cytotoxicity since a phagocytosis inhibitor, cytochalasin D, prevented their cytotoxicity. Taken together, our data confirmed the involvement of necroptosis as one of the pathways leading to cell death in crystallopathies. Our data identified RIPK-1, RIPK3, and MLKL as molecular targets to limit tissue injury and organ failure in crystallopathies.
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Affiliation(s)
- Mohsen Honarpisheh
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität, München, Munich, 80336, Germany
| | - Orestes Foresto-Neto
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität, München, Munich, 80336, Germany
| | - Jyaysi Desai
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität, München, Munich, 80336, Germany
| | - Stefanie Steiger
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität, München, Munich, 80336, Germany
| | - Lidia Anguiano Gómez
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität, München, Munich, 80336, Germany
| | - Bastian Popper
- Biomedical Center (BMC), Department for Cell Biology, Ludwig-Maximilians University, Munich, 82152, Germany
| | - Peter Boor
- Institute of Pathology & Dept. of Nephrology, University Clinic of RWTH Aachen, Aachen, 52074, Germany
| | - Hans-Joachim Anders
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität, München, Munich, 80336, Germany.
| | - Shrikant R Mulay
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität, München, Munich, 80336, Germany.
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33
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Desai J, Foresto-Neto O, Honarpisheh M, Steiger S, Nakazawa D, Popper B, Buhl EM, Boor P, Mulay SR, Anders HJ. Particles of different sizes and shapes induce neutrophil necroptosis followed by the release of neutrophil extracellular trap-like chromatin. Sci Rep 2017; 7:15003. [PMID: 29101355 PMCID: PMC5670218 DOI: 10.1038/s41598-017-15106-0] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 10/20/2017] [Indexed: 02/07/2023] Open
Abstract
The human body is exposed to a wide range of particles of industrial, environmental or internal origin such as asbestos, alum, silica or crystals of urate, calcium phosphate, calcium oxalate, cystine or cholesterol. Phagocytic clearance of such particles involves neutrophils and macrophages. Here we report that neutrophils encountering such particles of diverse sizes and shapes undergo necrotic cell death, a process associated with the formation of neutrophil extracellular trap (NET)-like extracellular DNA. In human neutrophils receptor-interacting protein kinase (RIPK)-1 inhibition with necrostatin-1s or mixed lineage kinase domain-like (MLKL) inhibition with necrosulfonamide abrogated cell death and associated-neutrophil extracellular DNA release induced by all of the aforementioned particles. Similar results were obtained with Mlkl-deficient mice neutrophils for all particles in vitro. Furthermore, Mlkl-deficient mice lacked tophus formation upon injection of MSU crystals into subcutaneous air pouches. These findings imply that nano- or microparticle-induced neutrophil extracellular DNA release is the consequence of neutrophil necroptosis, a regulated form of cell necrosis defined by RIPK1-RIPK3-MLKL signaling. Interestingly, this finding was consistent across different particle sizes and shapes. The RIPK1-RIPK3-MLKL signaling pathway may represent a potential therapeutic target in nano- or microparticle-related diseases (crystallopathies).
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Affiliation(s)
- Jyaysi Desai
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Orestes Foresto-Neto
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Mohsen Honarpisheh
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Stefanie Steiger
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Daigo Nakazawa
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Bastian Popper
- Department of Anatomy and Cell Biology, Biomedical Center, Ludwig-Maximilians Universität, Munich, Germany
| | - Eva Miriam Buhl
- Institut für Pathologie, Universitätsklinikum Aachen, Aachen, Germany.,Institute of Pathology & Department of Nephrology, University Clinic of the RWTH Aachen, Aachen, Germany
| | - Peter Boor
- Institut für Pathologie, Universitätsklinikum Aachen, Aachen, Germany
| | - Shrikant R Mulay
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Hans-Joachim Anders
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany.
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34
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Follwaczny P, Schieweck R, Riedemann T, Demleitner A, Straub T, Klemm AH, Bilban M, Sutor B, Popper B, Kiebler MA. Pumilio2-deficient mice show a predisposition for epilepsy. Dis Model Mech 2017; 10:1333-1342. [PMID: 29046322 PMCID: PMC5719250 DOI: 10.1242/dmm.029678] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 09/06/2017] [Indexed: 01/18/2023] Open
Abstract
Epilepsy is a neurological disease that is caused by abnormal hypersynchronous activities of neuronal ensembles leading to recurrent and spontaneous seizures in human patients. Enhanced neuronal excitability and a high level of synchrony between neurons seem to trigger these spontaneous seizures. The molecular mechanisms, however, regarding the development of neuronal hyperexcitability and maintenance of epilepsy are still poorly understood. Here, we show that pumilio RNA-binding family member 2 (Pumilio2; Pum2) plays a role in the regulation of excitability in hippocampal neurons of weaned and 5-month-old male mice. Almost complete deficiency of Pum2 in adult Pum2 gene-trap mice (Pum2 GT) causes misregulation of genes involved in neuronal excitability control. Interestingly, this finding is accompanied by the development of spontaneous epileptic seizures in Pum2 GT mice. Furthermore, we detect an age-dependent increase in Scn1a (Nav1.1) and Scn8a (Nav1.6) mRNA levels together with a decrease in Scn2a (Nav1.2) transcript levels in weaned Pum2 GT that is absent in older mice. Moreover, field recordings of CA1 pyramidal neurons show a tendency towards a reduced paired-pulse inhibition after stimulation of the Schaffer-collateral-commissural pathway in Pum2 GT mice, indicating a predisposition to the development of spontaneous seizures at later stages. With the onset of spontaneous seizures at the age of 5 months, we detect increased protein levels of Nav1.1 and Nav1.2 as well as decreased protein levels of Nav1.6 in those mice. In addition, GABA receptor subunit alpha-2 (Gabra2) mRNA levels are increased in weaned and adult mice. Furthermore, we observe an enhanced GABRA2 protein level in the dendritic field of the CA1 subregion in the Pum2 GT hippocampus. We conclude that altered expression levels of known epileptic risk factors such as Nav1.1, Nav1.2, Nav1.6 and GABRA2 result in enhanced seizure susceptibility and manifestation of epilepsy in the hippocampus. Thus, our results argue for a role of Pum2 in epileptogenesis and the maintenance of epilepsy. Summary: Epileptogenic risk factors are misregulated in Pumilio2-deficient mice, determining a predisposition to develop seizures. This article has an associated First Person interview with the first author of the paper as part of the supplementary information.
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Affiliation(s)
- Philipp Follwaczny
- Biomedical Center (BMC), Department for Cell Biology, Faculty of Medicine, LMU, Munich, 82152 Planegg-Martinsried, Germany
| | - Rico Schieweck
- Biomedical Center (BMC), Department for Cell Biology, Faculty of Medicine, LMU, Munich, 82152 Planegg-Martinsried, Germany
| | - Therese Riedemann
- Biomedical Center (BMC), Department of Physiological Genomics, Ludwig-Maximilians-University, Munich, 82152 Planegg-Martinsried, Germany
| | - Antonia Demleitner
- Biomedical Center (BMC), Department for Cell Biology, Faculty of Medicine, LMU, Munich, 82152 Planegg-Martinsried, Germany
| | - Tobias Straub
- Biomedical Center (BMC), Core Facility Bioinformatics, Ludwig-Maximilians-University, Munich, 82152 Planegg-Martinsried, Germany
| | - Anna H Klemm
- Biomedical Center (BMC), Core Facility Bioimaging, Ludwig-Maximilians-University, Munich, 82152 Planegg-Martinsried, Germany.,Walter Brendel Centre of Experimental Medicine, Ludwig-Maximilians-University, 81377 Munich, Germany
| | - Martin Bilban
- Department of Laboratory Medicine and Core Facility Genomics, Medical University of Vienna, 1090 Vienna, Austria
| | - Bernd Sutor
- Biomedical Center (BMC), Department of Physiological Genomics, Ludwig-Maximilians-University, Munich, 82152 Planegg-Martinsried, Germany
| | - Bastian Popper
- Biomedical Center (BMC), Department for Cell Biology, Faculty of Medicine, LMU, Munich, 82152 Planegg-Martinsried, Germany .,Biomedical Center (BMC), Core Facility Animal Models, Ludwig-Maximilians-University, Munich, 82152 Planegg-Martinsried, Germany
| | - Michael A Kiebler
- Biomedical Center (BMC), Department for Cell Biology, Faculty of Medicine, LMU, Munich, 82152 Planegg-Martinsried, Germany
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35
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Einer C, Hohenester S, Wimmer R, Wottke L, Artmann R, Schulz S, Gosmann C, Simmons A, Leitzinger C, Eberhagen C, Borchard S, Schmitt S, Hauck SM, von Toerne C, Jastroch M, Walheim E, Rust C, Gerbes AL, Popper B, Mayr D, Schnurr M, Vollmar AM, Denk G, Zischka H. Data on chow, liver tissue and mitochondrial fatty acid compositions as well as mitochondrial proteome changes after feeding mice a western diet for 6-24 weeks. Data Brief 2017; 15:163-169. [PMID: 29034285 PMCID: PMC5633826 DOI: 10.1016/j.dib.2017.09.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 09/12/2017] [Indexed: 10/26/2022] Open
Abstract
The data presented in this article describe the fatty acid composition of chow, liver tissue and isolated liver mitochondria from mice fed for 6-24 weeks with a high caloric western diet (WD) in comparison to control diet (normal diet, ND). The fatty acid composition was measured via gas chromatography flame ionization detection (GC-FID). Moreover, WD-induced mitochondrial protein changes are presented in this work and were analyzed by mass spectrometry (LC-MS/MS). For further interpretation and discussion of the presented data please refer to the research article entitled "Mitochondrial adaptation in steatotic mice" (Einer et al., 2017) [1].
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Affiliation(s)
- Claudia Einer
- Institute of Molecular Toxicology and Pharmacology, Helmholtz Center Munich, German Research Center for Environmental Health, 85764 Neuherberg, Germany
| | - Simon Hohenester
- Department of Medicine II - Grosshadern, Liver Center Munich, LMU Munich, 81377 Munich, Germany
| | - Ralf Wimmer
- Department of Medicine II - Grosshadern, Liver Center Munich, LMU Munich, 81377 Munich, Germany
| | - Lena Wottke
- Department of Medicine II - Grosshadern, Liver Center Munich, LMU Munich, 81377 Munich, Germany
| | - Renate Artmann
- Department of Medicine II - Grosshadern, Liver Center Munich, LMU Munich, 81377 Munich, Germany
| | - Sabine Schulz
- Institute of Molecular Toxicology and Pharmacology, Helmholtz Center Munich, German Research Center for Environmental Health, 85764 Neuherberg, Germany
| | - Christian Gosmann
- Institute of Molecular Toxicology and Pharmacology, Helmholtz Center Munich, German Research Center for Environmental Health, 85764 Neuherberg, Germany
| | - Alisha Simmons
- Institute of Molecular Toxicology and Pharmacology, Helmholtz Center Munich, German Research Center for Environmental Health, 85764 Neuherberg, Germany
| | - Christin Leitzinger
- Institute of Molecular Toxicology and Pharmacology, Helmholtz Center Munich, German Research Center for Environmental Health, 85764 Neuherberg, Germany
| | - Carola Eberhagen
- Institute of Molecular Toxicology and Pharmacology, Helmholtz Center Munich, German Research Center for Environmental Health, 85764 Neuherberg, Germany
| | - Sabine Borchard
- Institute of Molecular Toxicology and Pharmacology, Helmholtz Center Munich, German Research Center for Environmental Health, 85764 Neuherberg, Germany
| | - Sabine Schmitt
- Institute of Toxicology and Environmental Hygiene, Technical University of Munich, 80802 Munich, Germany
| | - Stefanie M Hauck
- Research Unit Protein Science, Helmholtz Center Munich, German Research Center for Environmental Health, 85764 Neuherberg, Germany
| | - Christine von Toerne
- Research Unit Protein Science, Helmholtz Center Munich, German Research Center for Environmental Health, 85764 Neuherberg, Germany
| | - Martin Jastroch
- Institute of Diabetes and Obesity, Helmholtz Center Munich, German Research Center for Environmental Health, 85764 Neuherberg, Germany
| | - Ellen Walheim
- Institute of Diabetes and Obesity, Helmholtz Center Munich, German Research Center for Environmental Health, 85764 Neuherberg, Germany
| | - Christian Rust
- Department of Medicine I, Krankenhaus Barmherzige Brüder, 80639 Munich, Germany
| | - Alexander L Gerbes
- Department of Medicine II - Grosshadern, Liver Center Munich, LMU Munich, 81377 Munich, Germany
| | - Bastian Popper
- Biomedical Center, Department of Anatomy and Cell biology, LMU Munich, 82152 Planegg, Martinsried,, Germany
| | - Doris Mayr
- Department of Pathology, LMU Munich, 80337 Munich, Germany
| | - Max Schnurr
- Division of Clinical Pharmacology & Center for Integrated Protein Science Munich (CIPSM), Klinikum der Universität München, 80337 Munich, Germany
| | - Angelika M Vollmar
- Department of Pharmacy - Center for Drug Research, Pharmaceutical Biology, LMU Munich, 81377 Munich, Germany
| | - Gerald Denk
- Department of Medicine II - Grosshadern, Liver Center Munich, LMU Munich, 81377 Munich, Germany
| | - Hans Zischka
- Institute of Molecular Toxicology and Pharmacology, Helmholtz Center Munich, German Research Center for Environmental Health, 85764 Neuherberg, Germany.,Institute of Toxicology and Environmental Hygiene, Technical University of Munich, 80802 Munich, Germany
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36
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Schludi MH, Becker L, Garrett L, Gendron TF, Zhou Q, Schreiber F, Popper B, Dimou L, Strom TM, Winkelmann J, von Thaden A, Rentzsch K, May S, Michaelsen M, Schwenk BM, Tan J, Schoser B, Dieterich M, Petrucelli L, Hölter SM, Wurst W, Fuchs H, Gailus-Durner V, de Angelis MH, Klopstock T, Arzberger T, Edbauer D. Spinal poly-GA inclusions in a C9orf72 mouse model trigger motor deficits and inflammation without neuron loss. Acta Neuropathol 2017; 134:241-254. [PMID: 28409281 PMCID: PMC5508040 DOI: 10.1007/s00401-017-1711-0] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 04/04/2017] [Accepted: 04/04/2017] [Indexed: 12/13/2022]
Abstract
Translation of the expanded (ggggcc)n repeat in C9orf72 patients with amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD) causes abundant poly-GA inclusions. To elucidate their role in pathogenesis, we generated transgenic mice expressing codon-modified (GA)149 conjugated with cyan fluorescent protein (CFP). Transgenic mice progressively developed poly-GA inclusions predominantly in motoneurons and interneurons of the spinal cord and brain stem and in deep cerebellar nuclei. Poly-GA co-aggregated with p62, Rad23b and the newly identified Mlf2, in both mouse and patient samples. Consistent with the expression pattern, 4-month-old transgenic mice showed abnormal gait and progressive balance impairment, but showed normal hippocampus-dependent learning and memory. Apart from microglia activation we detected phosphorylated TDP-43 but no neuronal loss. Thus, poly-GA triggers behavioral deficits through inflammation and protein sequestration that likely contribute to the prodromal symptoms and disease progression of C9orf72 patients.
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Affiliation(s)
- Martin H Schludi
- German Center for Neurodegenerative Diseases (DZNE) Munich, Feodor-Lynen-Straße 17, 81377, Munich, Germany
- Munich Cluster for System Neurology (SyNergy), Feodor-Lynen-Straße 17, 81377, Munich, Germany
| | - Lore Becker
- German Mouse Clinic, Institute of Experimental Genetics, German Research Center for Environmental Health, Helmholtz Zentrum München, Ingolstädter Landstrasse 1, 85764, Neuherberg, Germany
| | - Lillian Garrett
- German Mouse Clinic, Institute of Experimental Genetics, German Research Center for Environmental Health, Helmholtz Zentrum München, Ingolstädter Landstrasse 1, 85764, Neuherberg, Germany
- Institute of Developmental Genetics, German Research Center for Environmental Health, Helmholtz Zentrum München, Ingolstädter Landstrasse 1, 85764, Neuherberg, Germany
| | - Tania F Gendron
- Department of Neuroscience, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL, 32224, USA
| | - Qihui Zhou
- German Center for Neurodegenerative Diseases (DZNE) Munich, Feodor-Lynen-Straße 17, 81377, Munich, Germany
- Munich Cluster for System Neurology (SyNergy), Feodor-Lynen-Straße 17, 81377, Munich, Germany
| | - Franziska Schreiber
- German Center for Neurodegenerative Diseases (DZNE) Munich, Feodor-Lynen-Straße 17, 81377, Munich, Germany
| | - Bastian Popper
- Department of Anatomy and Cell Biology, Biomedical Center, Ludwig-Maximilians-University Munich, Großhaderner Str. 9, 82152, Planegg-Martinsried, Germany
| | - Leda Dimou
- Physiological Genomics, Biomedical Center, Ludwig-Maximilians-University Munich, Großhaderner Str. 9, 82152, Planegg-Martinsried, Germany
- Molecular and Translational Neuroscience, Department of Neurology, University of Ulm, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Tim M Strom
- Institut für Humangenetik, Helmholtz Zentrum München, 85764, Munich, Germany
| | - Juliane Winkelmann
- Munich Cluster for System Neurology (SyNergy), Feodor-Lynen-Straße 17, 81377, Munich, Germany
- Institut für Neurogenomik, Helmholtz Zentrum München, 85764, Munich, Germany
- Neurologische Klinik, Klinikum rechts der Isar, Technische Universität München, 81675, Munich, Germany
- Institut für Humangenetik, Klinikum rechts der Isar, Technische Universität München, 81675, Munich, Germany
| | - Anne von Thaden
- German Center for Neurodegenerative Diseases (DZNE) Munich, Feodor-Lynen-Straße 17, 81377, Munich, Germany
| | - Kristin Rentzsch
- German Center for Neurodegenerative Diseases (DZNE) Munich, Feodor-Lynen-Straße 17, 81377, Munich, Germany
| | - Stephanie May
- German Center for Neurodegenerative Diseases (DZNE) Munich, Feodor-Lynen-Straße 17, 81377, Munich, Germany
| | - Meike Michaelsen
- German Center for Neurodegenerative Diseases (DZNE) Munich, Feodor-Lynen-Straße 17, 81377, Munich, Germany
| | - Benjamin M Schwenk
- German Center for Neurodegenerative Diseases (DZNE) Munich, Feodor-Lynen-Straße 17, 81377, Munich, Germany
| | - Jing Tan
- Institut für Neurogenomik, Helmholtz Zentrum München, 85764, Munich, Germany
| | - Benedikt Schoser
- Department of Neurology, Friedrich-Baur-Institute, Klinikum der Ludwig-Maximilians-Universität München, Ziemssenstr. 1a, 80336, Munich, Germany
| | - Marianne Dieterich
- German Center for Neurodegenerative Diseases (DZNE) Munich, Feodor-Lynen-Straße 17, 81377, Munich, Germany
- Munich Cluster for System Neurology (SyNergy), Feodor-Lynen-Straße 17, 81377, Munich, Germany
- Department of Neurology, Friedrich-Baur-Institute, Klinikum der Ludwig-Maximilians-Universität München, Ziemssenstr. 1a, 80336, Munich, Germany
| | - Leonard Petrucelli
- Department of Neuroscience, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL, 32224, USA
| | - Sabine M Hölter
- German Mouse Clinic, Institute of Experimental Genetics, German Research Center for Environmental Health, Helmholtz Zentrum München, Ingolstädter Landstrasse 1, 85764, Neuherberg, Germany
- Institute of Developmental Genetics, German Research Center for Environmental Health, Helmholtz Zentrum München, Ingolstädter Landstrasse 1, 85764, Neuherberg, Germany
| | - Wolfgang Wurst
- German Center for Neurodegenerative Diseases (DZNE) Munich, Feodor-Lynen-Straße 17, 81377, Munich, Germany
- Munich Cluster for System Neurology (SyNergy), Feodor-Lynen-Straße 17, 81377, Munich, Germany
- Institute of Developmental Genetics, German Research Center for Environmental Health, Helmholtz Zentrum München, Ingolstädter Landstrasse 1, 85764, Neuherberg, Germany
- Chair of Developmental Genetics, Technische Universität München, Freising-Weihenstephan, Germany
| | - Helmut Fuchs
- German Mouse Clinic, Institute of Experimental Genetics, German Research Center for Environmental Health, Helmholtz Zentrum München, Ingolstädter Landstrasse 1, 85764, Neuherberg, Germany
| | - Valerie Gailus-Durner
- German Mouse Clinic, Institute of Experimental Genetics, German Research Center for Environmental Health, Helmholtz Zentrum München, Ingolstädter Landstrasse 1, 85764, Neuherberg, Germany
| | - Martin Hrabe de Angelis
- German Mouse Clinic, Institute of Experimental Genetics, German Research Center for Environmental Health, Helmholtz Zentrum München, Ingolstädter Landstrasse 1, 85764, Neuherberg, Germany
- Chair of Experimental Genetics, School of Life Science Weihenstephan, Technische Universität München, Alte Akademie 8, 85354, Freising, Germany
- German Center for Diabetes Research (DZD), Ingolstädter Landstr. 1, 85764, Neuherberg, Germany
| | - Thomas Klopstock
- German Center for Neurodegenerative Diseases (DZNE) Munich, Feodor-Lynen-Straße 17, 81377, Munich, Germany
- Munich Cluster for System Neurology (SyNergy), Feodor-Lynen-Straße 17, 81377, Munich, Germany
- Department of Neurology, Friedrich-Baur-Institute, Klinikum der Ludwig-Maximilians-Universität München, Ziemssenstr. 1a, 80336, Munich, Germany
| | - Thomas Arzberger
- German Center for Neurodegenerative Diseases (DZNE) Munich, Feodor-Lynen-Straße 17, 81377, Munich, Germany
- Munich Cluster for System Neurology (SyNergy), Feodor-Lynen-Straße 17, 81377, Munich, Germany
- Center for Neuopathology and Prion Research, Ludwig-Maximilians-University Munich, Feodor-Lynen-Straße 23, 81377, Munich, Germany
- Department of Psychiatry and Psychotherapy, Ludwig-Maximilians University Munich, Nußbaumstraße 7, 80336, Munich, Germany
| | - Dieter Edbauer
- German Center for Neurodegenerative Diseases (DZNE) Munich, Feodor-Lynen-Straße 17, 81377, Munich, Germany.
- Munich Cluster for System Neurology (SyNergy), Feodor-Lynen-Straße 17, 81377, Munich, Germany.
- Institute for Metabolic Biochemistry, Ludwig-Maximilians-University Munich, Feodor-Lynen-Straße 17, 81337, Munich, Germany.
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Tato M, Kumar SV, Liu Y, Mulay SR, Moll S, Popper B, Eberhard JN, Thomasova D, Rufer AC, Gruner S, Haap W, Hartmann G, Anders HJ. Cathepsin S inhibition combines control of systemic and peripheral pathomechanisms of autoimmune tissue injury. Sci Rep 2017; 7:2775. [PMID: 28584258 PMCID: PMC5459853 DOI: 10.1038/s41598-017-01894-y] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Accepted: 04/03/2017] [Indexed: 12/23/2022] Open
Abstract
Cathepsin(Cat)-S processing of the invariant chain-MHC-II complex inside antigen presenting cells is a central pathomechanism of autoimmune-diseases. Additionally, Cat-S is released by activated-myeloid cells and was recently described to activate protease-activated-receptor-(PAR)-2 in extracellular compartments. We hypothesized that Cat-S blockade targets both mechanisms and elicits synergistic therapeutic effects on autoimmune tissue injury. MRL-(Fas)lpr mice with spontaneous autoimmune tissue injury were treated with different doses of Cat-S inhibitor RO5459072, mycophenolate mofetil or vehicle. Further, female MRL-(Fas)lpr mice were injected with recombinant Cat-S with/without concomitant Cat-S or PAR-2 blockade. Cat-S blockade dose-dependently reversed aberrant systemic autoimmunity, e.g. plasma cytokines, activation of myeloid cells and hypergammaglobulinemia. Especially IgG autoantibody production was suppressed. Of note (MHC-II-independent) IgM were unaffected by Cat-S blockade while they were suppressed by MMF. Cat-S blockade dose-dependently suppressed immune-complex glomerulonephritis together with a profound and early effect on proteinuria, which was not shared by MMF. In fact, intravenous Cat-S injection induced severe glomerular endothelial injury and albuminuria, which was entirely prevented by Cat-S or PAR-2 blockade. In-vitro studies confirm that Cat-S induces endothelial activation and injury via PAR-2. Therapeutic Cat-S blockade suppresses systemic and peripheral pathomechanisms of autoimmune tissue injury, hence, Cat-S is a promising therapeutic target in lupus nephritis.
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Affiliation(s)
- Maia Tato
- Medizinische Klinik and Poliklinik IV, Renal Division, Klinikum der Universität München, Campus Innenstadt, München, Germany
| | - Santhosh V Kumar
- Medizinische Klinik and Poliklinik IV, Renal Division, Klinikum der Universität München, Campus Innenstadt, München, Germany
| | - Yajuan Liu
- Medizinische Klinik and Poliklinik IV, Renal Division, Klinikum der Universität München, Campus Innenstadt, München, Germany.,Dalian Central Hospital, Southern Medical University, Dalian, China
| | - Shrikant R Mulay
- Medizinische Klinik and Poliklinik IV, Renal Division, Klinikum der Universität München, Campus Innenstadt, München, Germany
| | - Solange Moll
- Division of Clinical Pathology, Department of Pathology and Immunology, University Hospital Geneva, Geneva, Switzerland
| | - Bastian Popper
- Department of Anatomy and Cell Biology, Biomedical Center, Ludwig-Maximilians Universität, Planegg-Martinsried, Germany
| | - Jonathan N Eberhard
- Medizinische Klinik and Poliklinik IV, Renal Division, Klinikum der Universität München, Campus Innenstadt, München, Germany
| | - Dana Thomasova
- Medizinische Klinik and Poliklinik IV, Renal Division, Klinikum der Universität München, Campus Innenstadt, München, Germany
| | - Arne Christian Rufer
- Roche Innovation Centre Basel, Pharma Research and Early Development, Hoffmann La Roche, Basel, Switzerland
| | - Sabine Gruner
- Roche Innovation Centre Basel, Pharma Research and Early Development, Hoffmann La Roche, Basel, Switzerland
| | - Wolfgang Haap
- Roche Innovation Centre Basel, Pharma Research and Early Development, Hoffmann La Roche, Basel, Switzerland
| | - Guido Hartmann
- Roche Innovation Centre Basel, Pharma Research and Early Development, Hoffmann La Roche, Basel, Switzerland
| | - Hans-Joachim Anders
- Medizinische Klinik and Poliklinik IV, Renal Division, Klinikum der Universität München, Campus Innenstadt, München, Germany.
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38
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Schieweck R, Popper B, Kiebler MA. Co-Translational Folding: A Novel Modulator of Local Protein Expression in Mammalian Neurons? Trends Genet 2016; 32:788-800. [DOI: 10.1016/j.tig.2016.10.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 10/04/2016] [Accepted: 10/11/2016] [Indexed: 01/15/2023]
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39
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Thomasova D, Ebrahim M, Fleckinger K, Li M, Molnar J, Popper B, Liapis H, Kotb AM, Siegerist F, Endlich N, Anders HJ. MDM2 prevents spontaneous tubular epithelial cell death and acute kidney injury. Cell Death Dis 2016; 7:e2482. [PMID: 27882940 PMCID: PMC5260907 DOI: 10.1038/cddis.2016.390] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 10/21/2016] [Accepted: 10/25/2016] [Indexed: 12/24/2022]
Abstract
Murine double minute-2 (MDM2) is an E3-ubiquitin ligase and the main negative regulator of tumor suppressor gene p53. MDM2 has also a non-redundant function as a modulator of NF-kB signaling. As such it promotes proliferation and inflammation. MDM2 is highly expressed in the unchallenged tubular epithelial cells and we hypothesized that MDM2 is necessary for their survival and homeostasis. MDM2 knockdown by siRNA or by genetic depletion resulted in demise of tubular cells in vitro. This phenotype was completely rescued by concomitant knockdown of p53, thus suggesting p53 dependency. In vivo experiments in the zebrafish model demonstrated that the tubulus cells of the larvae undergo cell death after the knockdown of mdm2. Doxycycline-induced deletion of MDM2 in tubular cell-specific MDM2-knockout mice Pax8rtTa-cre; MDM2f/f caused acute kidney injury with increased plasma creatinine and blood urea nitrogen and sharp decline of glomerular filtration rate. Histological analysis showed massive swelling of renal tubular cells and later their loss and extensive tubular dilation, markedly in proximal tubules. Ultrastructural changes of tubular epithelial cells included swelling of the cytoplasm and mitochondria with the loss of cristae and their transformation in the vacuoles. The pathological phenotype of the tubular cell-specific MDM2-knockout mouse model was completely rescued by co-deletion of p53. Tubular epithelium compensates only partially for the cell loss caused by MDM2 depletion by proliferation of surviving tubular cells, with incomplete MDM2 deletion, but rather mesenchymal healing occurs. We conclude that MDM2 is a non-redundant survival factor for proximal tubular cells by protecting them from spontaneous p53 overexpression-related cell death.
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Affiliation(s)
- Dana Thomasova
- Nephrologisches Zentrum, Medizinische Klinik und Poliklinik IV, Klinikum der LMU München, Munich, Germany
| | - Martrez Ebrahim
- Nephrologisches Zentrum, Medizinische Klinik und Poliklinik IV, Klinikum der LMU München, Munich, Germany
| | - Kristina Fleckinger
- Nephrologisches Zentrum, Medizinische Klinik und Poliklinik IV, Klinikum der LMU München, Munich, Germany
| | - Moying Li
- Nephrologisches Zentrum, Medizinische Klinik und Poliklinik IV, Klinikum der LMU München, Munich, Germany
| | - Jakob Molnar
- Nephrologisches Zentrum, Medizinische Klinik und Poliklinik IV, Klinikum der LMU München, Munich, Germany
| | - Bastian Popper
- Department of Anatomy and Cell Biology, Ludwig-Maximilians Universität, Munich, Germany
| | - Helen Liapis
- Pathology & Immunology & Internal Medicine (Renal), Washington University, School of Medicine, St Louis, MO, USA
| | - Ahmed M Kotb
- Department of Anatomy and Cell Biology, Universitätsmedizin Greifswald, Greifswald, Germany
- Department of Anatomy and Histology, Faculty of Veterinary Medicine, Assiut University, Assiut, Egypt
| | - Florian Siegerist
- Department of Anatomy and Cell Biology, Universitätsmedizin Greifswald, Greifswald, Germany
| | - Nicole Endlich
- Department of Anatomy and Cell Biology, Universitätsmedizin Greifswald, Greifswald, Germany
| | - Hans-Joachim Anders
- Nephrologisches Zentrum, Medizinische Klinik und Poliklinik IV, Klinikum der LMU München, Munich, Germany
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40
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Rieger A, Kemter E, Kumar S, Popper B, Aigner B, Wolf E, Wanke R, Blutke A. Missense Mutation of POU Domain Class 3 Transcription Factor 3 in Pou3f3L423P Mice Causes Reduced Nephron Number and Impaired Development of the Thick Ascending Limb of the Loop of Henle. PLoS One 2016; 11:e0158977. [PMID: 27420727 PMCID: PMC4946790 DOI: 10.1371/journal.pone.0158977] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Accepted: 06/25/2016] [Indexed: 12/27/2022] Open
Abstract
During nephrogenesis, POU domain class 3 transcription factor 3 (POU3F3 aka BRN1) is critically involved in development of distinct nephron segments, including the thick ascending limb of the loop of Henle (TAL). Deficiency of POU3F3 in knock-out mice leads to underdevelopment of the TAL, lack of differentiation of TAL cells, and perinatal death due to renal failure. Pou3f3L423P mutant mice, which were established in the Munich ENU Mouse Mutagenesis Project, carry a recessive point mutation in the homeobox domain of POU3F3. Homozygous Pou3f3L423P mutants are viable and fertile. The present study used functional, as well as qualitative and quantitative morphological analyses to characterize the renal phenotype of juvenile (12 days) and aged (60 weeks) homo- and heterozygous Pou3f3L423P mutant mice and age-matched wild-type controls. In both age groups, homozygous mutants vs. control mice displayed significantly smaller kidney volumes, decreased nephron numbers and mean glomerular volumes, smaller TAL volumes, as well as lower volume densities of the TAL in the kidney. No histological or ultrastructural lesions of TAL cells or glomerular cells were observed in homozygous mutant mice. Aged homozygous mutants displayed increased serum urea concentrations and reduced specific urine gravity, but no evidence of glomerular dysfunction. These results confirm the role of POU3F3 in development and function of the TAL and provide new evidence for its involvement in regulation of the nephron number in the kidney. Therefore, Pou3f3L423P mutant mice represent a valuable research model for further analyses of POU3F3 functions, or for nephrological studies examining the role of congenital low nephron numbers.
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Affiliation(s)
- Alexandra Rieger
- Institute of Veterinary Pathology at the Centre for Clinical Veterinary Medicine, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Elisabeth Kemter
- Chair for Molecular Animal Breeding and Biotechnology and Laboratory for Functional Genome Analysis, Gene Center, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Sudhir Kumar
- Chair for Molecular Animal Breeding and Biotechnology and Laboratory for Functional Genome Analysis, Gene Center, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Bastian Popper
- Department of Anatomy and Cell Biology, Biomedical Center, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Bernhard Aigner
- Chair for Molecular Animal Breeding and Biotechnology and Laboratory for Functional Genome Analysis, Gene Center, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Eckhard Wolf
- Chair for Molecular Animal Breeding and Biotechnology and Laboratory for Functional Genome Analysis, Gene Center, Ludwig-Maximilians-Universität München, Munich, Germany
- German Center for Diabetes Research (DZD), Helmholtz Zentrum München, Neuherberg, Germany
| | - Rüdiger Wanke
- Institute of Veterinary Pathology at the Centre for Clinical Veterinary Medicine, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Andreas Blutke
- Institute of Veterinary Pathology at the Centre for Clinical Veterinary Medicine, Ludwig-Maximilians-Universität München, Munich, Germany
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41
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Mulay SR, Desai J, Kumar SV, Eberhard JN, Thomasova D, Romoli S, Grigorescu M, Kulkarni OP, Popper B, Vielhauer V, Zuchtriegel G, Reichel C, Bräsen JH, Romagnani P, Bilyy R, Munoz LE, Herrmann M, Liapis H, Krautwald S, Linkermann A, Anders HJ. Cytotoxicity of crystals involves RIPK3-MLKL-mediated necroptosis. Nat Commun 2016; 7:10274. [PMID: 26817517 PMCID: PMC4738349 DOI: 10.1038/ncomms10274] [Citation(s) in RCA: 191] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Accepted: 11/20/2015] [Indexed: 12/22/2022] Open
Abstract
Crystals cause injury in numerous disorders, and induce inflammation via the NLRP3 inflammasome, however, it remains unclear how crystals induce cell death. Here we report that crystals of calcium oxalate, monosodium urate, calcium pyrophosphate dihydrate and cystine trigger caspase-independent cell death in five different cell types, which is blocked by necrostatin-1. RNA interference for receptor-interacting protein kinase 3 (RIPK3) or mixed lineage kinase domain like (MLKL), two core proteins of the necroptosis pathway, blocks crystal cytotoxicity. Consistent with this, deficiency of RIPK3 or MLKL prevents oxalate crystal-induced acute kidney injury. The related tissue inflammation drives TNF-α-related necroptosis. Also in human oxalate crystal-related acute kidney injury, dying tubular cells stain positive for phosphorylated MLKL. Furthermore, necrostatin-1 and necrosulfonamide, an inhibitor for human MLKL suppress crystal-induced cell death in human renal progenitor cells. Together, TNF-α/TNFR1, RIPK1, RIPK3 and MLKL are molecular targets to limit crystal-induced cytotoxicity, tissue injury and organ failure. Kidney stone disease is caused by accumulation of oxalate crystals, which trigger tissue injury, inflammation and cell death. Mulay et al. show that crystals induce cell death in the kidney through necroptosis, and propose that this pathway may be a target for the treatment of crystal-induced disease.
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Affiliation(s)
- Shrikant R Mulay
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität, München, Munich 80336, Germany
| | - Jyaysi Desai
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität, München, Munich 80336, Germany
| | - Santhosh V Kumar
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität, München, Munich 80336, Germany
| | - Jonathan N Eberhard
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität, München, Munich 80336, Germany
| | - Dana Thomasova
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität, München, Munich 80336, Germany
| | - Simone Romoli
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität, München, Munich 80336, Germany
| | - Melissa Grigorescu
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität, München, Munich 80336, Germany
| | - Onkar P Kulkarni
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität, München, Munich 80336, Germany
| | - Bastian Popper
- Department of Anatomy and Cell Biology, Ludwig-Maximilians Universität, Munich 80336, Germany
| | - Volker Vielhauer
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität, München, Munich 80336, Germany
| | - Gabriele Zuchtriegel
- Department of Otorhinolaryngology, Head and Neck Surgery, University of Munich, Munich 81377, Germany.,Walter Brendel Center for Experimental Medicine, University of Munich, Munich 81377, Germany
| | - Christoph Reichel
- Department of Otorhinolaryngology, Head and Neck Surgery, University of Munich, Munich 81377, Germany.,Walter Brendel Center for Experimental Medicine, University of Munich, Munich 81377, Germany
| | - Jan Hinrich Bräsen
- Department of Nephropathology, Institute for Pathology, Hannover Medical School, Hannover 30625, Germany
| | - Paola Romagnani
- Excellence Centre for Research, Transfer and High Education for the Development of De Novo Therapies (DENOTHE), University of Florence, Florence 50139, Italy
| | - Rostyslav Bilyy
- Danylo Halytsky Lviv National Medical University, Lviv 79010, Ukraine
| | - Luis E Munoz
- Department for Internal Medicine, University Hospital Erlangen, Institute for Clinical Immunology, Erlangen 91054, Germany
| | - Martin Herrmann
- Department for Internal Medicine, University Hospital Erlangen, Institute for Clinical Immunology, Erlangen 91054, Germany
| | - Helen Liapis
- Department of Pathology and Immunology, Washington University School of Medicine, Saint Louis, Missouri 63110, USA.,Nephropath, Little Rock, Arkansas 72211, USA
| | - Stefan Krautwald
- Division of Nephrology and Hypertension, Christian-Albrechts-University, Kiel 24105, Germany
| | - Andreas Linkermann
- Division of Nephrology and Hypertension, Christian-Albrechts-University, Kiel 24105, Germany
| | - Hans-Joachim Anders
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität, München, Munich 80336, Germany
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42
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Desai J, Kumar SV, Mulay SR, Konrad L, Romoli S, Schauer C, Herrmann M, Bilyy R, Müller S, Popper B, Nakazawa D, Weidenbusch M, Thomasova D, Krautwald S, Linkermann A, Anders HJ. PMA and crystal-induced neutrophil extracellular trap formation involves RIPK1-RIPK3-MLKL signaling. Eur J Immunol 2015; 46:223-9. [PMID: 26531064 DOI: 10.1002/eji.201545605] [Citation(s) in RCA: 160] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 08/06/2015] [Accepted: 10/29/2015] [Indexed: 01/01/2023]
Abstract
Neutrophil extracellular trap (NET) formation contributes to gout, autoimmune vasculitis, thrombosis, and atherosclerosis. The outside-in signaling pathway triggering NET formation is unknown. Here, we show that the receptor-interacting protein kinase (RIPK)-1-stabilizers necrostatin-1 or necrostatin-1s and the mixed lineage kinase domain-like (MLKL)-inhibitor necrosulfonamide prevent monosodium urate (MSU) crystal- or PMA-induced NET formation in human and mouse neutrophils. These compounds do not affect PMA- or urate crystal-induced production of ROS. Moreover, neutrophils of chronic granulomatous disease patients are shown to lack PMA-induced MLKL phosphorylation. Genetic deficiency of RIPK3 in mice prevents MSU crystal-induced NET formation in vitro and in vivo. Thus, neutrophil death and NET formation may involve the signaling pathway defining necroptosis downstream of ROS production. These data imply that RIPK1, RIPK3, and MLKL could represent molecular targets in gout or other crystallopathies.
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Affiliation(s)
- Jyaysi Desai
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Santhosh V Kumar
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Shrikant R Mulay
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Lukas Konrad
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Simone Romoli
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Christine Schauer
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Martin Herrmann
- Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Rostyslav Bilyy
- Department of Histology, Cytology, Embryology, Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
| | - Susanna Müller
- Pathologisches Institut, Ludwig-Maximilians Universität, Munich, Germany
| | - Bastian Popper
- Department of Anatomy and Cell Biology, Ludwig-Maximilians Universität, Munich, Germany
| | - Daigo Nakazawa
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Marc Weidenbusch
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Dana Thomasova
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Stefan Krautwald
- Division of Nephrology and Hypertension, Christian-Albrechts-University, Kiel, Germany
| | - Andreas Linkermann
- Division of Nephrology and Hypertension, Christian-Albrechts-University, Kiel, Germany
| | - Hans-Joachim Anders
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
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43
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Kumar Vr S, Darisipudi MN, Steiger S, Devarapu SK, Tato M, Kukarni OP, Mulay SR, Thomasova D, Popper B, Demleitner J, Zuchtriegel G, Reichel C, Cohen CD, Lindenmeyer MT, Liapis H, Moll S, Reid E, Stitt AW, Schott B, Gruner S, Haap W, Ebeling M, Hartmann G, Anders HJ. Cathepsin S Cleavage of Protease-Activated Receptor-2 on Endothelial Cells Promotes Microvascular Diabetes Complications. J Am Soc Nephrol 2015; 27:1635-49. [PMID: 26567242 DOI: 10.1681/asn.2015020208] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 08/25/2015] [Indexed: 01/13/2023] Open
Abstract
Endothelial dysfunction is a central pathomechanism in diabetes-associated complications. We hypothesized a pathogenic role in this dysfunction of cathepsin S (Cat-S), a cysteine protease that degrades elastic fibers and activates the protease-activated receptor-2 (PAR2) on endothelial cells. We found that injection of mice with recombinant Cat-S induced albuminuria and glomerular endothelial cell injury in a PAR2-dependent manner. In vivo microscopy confirmed a role for intrinsic Cat-S/PAR2 in ischemia-induced microvascular permeability. In vitro transcriptome analysis and experiments using siRNA or specific Cat-S and PAR2 antagonists revealed that Cat-S specifically impaired the integrity and barrier function of glomerular endothelial cells selectively through PAR2. In human and mouse type 2 diabetic nephropathy, only CD68(+) intrarenal monocytes expressed Cat-S mRNA, whereas Cat-S protein was present along endothelial cells and inside proximal tubular epithelial cells also. In contrast, the cysteine protease inhibitor cystatin C was expressed only in tubules. Delayed treatment of type 2 diabetic db/db mice with Cat-S or PAR2 inhibitors attenuated albuminuria and glomerulosclerosis (indicators of diabetic nephropathy) and attenuated albumin leakage into the retina and other structural markers of diabetic retinopathy. These data identify Cat-S as a monocyte/macrophage-derived circulating PAR2 agonist and mediator of endothelial dysfunction-related microvascular diabetes complications. Thus, Cat-S or PAR2 inhibition might be a novel strategy to prevent microvascular disease in diabetes and other diseases.
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Affiliation(s)
- Santhosh Kumar Vr
- Medizinische Klinik and Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Murthy N Darisipudi
- Medizinische Klinik and Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Stefanie Steiger
- Medizinische Klinik and Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Satish Kumar Devarapu
- Medizinische Klinik and Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Maia Tato
- Medizinische Klinik and Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Onkar P Kukarni
- Medizinische Klinik and Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Shrikant R Mulay
- Medizinische Klinik and Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Dana Thomasova
- Medizinische Klinik and Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Bastian Popper
- Department of Anatomy and Cell Biology, Ludwig-Maximilians Universität, Munich, Germany
| | | | - Gabriele Zuchtriegel
- Walter Brendel Centre of Experimental Medicine, and Department of Otorhinolaryngology, Head and Neck Surgery, University of Munich, Munich, Germany
| | - Christoph Reichel
- Walter Brendel Centre of Experimental Medicine, and Department of Otorhinolaryngology, Head and Neck Surgery, University of Munich, Munich, Germany
| | - Clemens D Cohen
- Division of Nephrology, Krankenhaus Harlaching, Munich, Germany; Division of Nephrology and Institute of Physiology, University Hospital and University of Zurich, Zurich, Switzerland
| | | | - Helen Liapis
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri
| | - Solange Moll
- Institute of Clinical Pathology, University Hospital Geneva, Geneva, Switzerland
| | - Emma Reid
- Centre for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, Ireland; and
| | - Alan W Stitt
- Centre for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, Ireland; and
| | - Brigitte Schott
- Cardiovascular and Metabolism, Pharma Research and Early Development, Hoffmann La Roche, Basel, Switzerland
| | - Sabine Gruner
- Cardiovascular and Metabolism, Pharma Research and Early Development, Hoffmann La Roche, Basel, Switzerland
| | - Wolfgang Haap
- Cardiovascular and Metabolism, Pharma Research and Early Development, Hoffmann La Roche, Basel, Switzerland
| | - Martin Ebeling
- Cardiovascular and Metabolism, Pharma Research and Early Development, Hoffmann La Roche, Basel, Switzerland
| | - Guido Hartmann
- Cardiovascular and Metabolism, Pharma Research and Early Development, Hoffmann La Roche, Basel, Switzerland
| | - Hans-Joachim Anders
- Medizinische Klinik and Poliklinik IV, Klinikum der Universität München, Munich, Germany;
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44
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Buhrmann C, Shayan P, Kraehe P, Popper B, Goel A, Shakibaei M. Resveratrol induces chemosensitization to 5-fluorouracil through up-regulation of intercellular junctions, Epithelial-to-mesenchymal transition and apoptosis in colorectal cancer. Biochem Pharmacol 2015; 98:51-68. [PMID: 26310874 DOI: 10.1016/j.bcp.2015.08.105] [Citation(s) in RCA: 102] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Accepted: 08/20/2015] [Indexed: 12/18/2022]
Abstract
5-Fluorouracil (5-FU), a common chemotherapeutic agent used for the treatment of colorectal cancer (CRC), by itself has inadequate response rates; highlighting the need for novel and improved treatment regimens for these patients. Resveratrol, a naturally-occurring polyphenol, has been linked with chemosensitizing potential and anticancer properties; however, the underlying mechanisms for these effects remain poorly understood. The effect of resveratrol in parental CRC cell lines (HCT116, SW480) and their corresponding isogenic 5-FU-chemoresistant derived clones (HCT116R, SW480R) was examined by MTT assays, intercellular junction formation and apoptosis by electron- and immunoelectron microscopy, nuclear factor-kappaB (NF-κB) and NF-κB regulated gene products by western blot analysis in a 3D-alginate microenvironment. Resveratrol blocked the proliferation of all four CRC cell lines and synergized the invasion inhibitory effects of 5-FU. Interestingly, resveratrol induced a transition from 5-FU-induced formation of microvilli to a planar cell surface, which was concomitant with up-regulation of desmosomes, gap- and tight junctions (claudin-2) and adhesion molecules (E-cadherin) expression in HCT116 and HCT116R cells. Further, resveratrol significantly attenuated drug resistance through inhibition of epithelial-mesenchymal transition (EMT) factors (decreased vimentin and slug, increased E-cadherin) and down-regulation of NF-κB activation and its translocation to the nucleus and abolished NF-κB-regulated gene end-products (MMP-9, caspase-3). Moreover, this suppression was mediated through inhibition of IκBα kinase and IκBα phosphorylation and degradation. Our results demonstrate that resveratrol can potentiate the anti-tumor effects of 5-FU on CRC cells by chemosensitizing them, inhibiting an EMT phenotype via up-regulation of intercellular junctions and by down-regulation of NF-κB pathway.
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Affiliation(s)
- Constanze Buhrmann
- Institute of Anatomy, Ludwig-Maximilian-University Munich, Pettenkoferstrasse 11, D-80336 Munich, Germany
| | - Parviz Shayan
- Investigating Institute of Molecular Biological System Transfer, Tehran 1417863171, Iran; Department of Parasitology, Faculty of Veterinary Medicine, University of Tehran, Tehran, 141556453, Iran
| | - Patricia Kraehe
- Institute of Anatomy, Ludwig-Maximilian-University Munich, Pettenkoferstrasse 11, D-80336 Munich, Germany
| | - Bastian Popper
- Department of Anatomy and Cell Biology, Biomedical Center, Ludwig-Maximilian-University Munich, D-80336 Munich, Germany
| | - Ajay Goel
- Center for Gastrointestinal Research; Center for Epigenetics, Cancer Prevention and Cancer Genomics, Baylor Research Institute and Sammons Cancer Center, Baylor University Medical Center, Dallas, Texas, USA
| | - Mehdi Shakibaei
- Institute of Anatomy, Ludwig-Maximilian-University Munich, Pettenkoferstrasse 11, D-80336 Munich, Germany.
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Shakibaei M, Kraehe P, Popper B, Shayan P, Goel A, Buhrmann C. Curcumin potentiates antitumor activity of 5-fluorouracil in a 3D alginate tumor microenvironment of colorectal cancer. BMC Cancer 2015; 15:250. [PMID: 25884903 PMCID: PMC4406109 DOI: 10.1186/s12885-015-1291-0] [Citation(s) in RCA: 100] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Accepted: 03/30/2015] [Indexed: 12/13/2022] Open
Abstract
Background To overcome the limitations of animal-based experiments, 3D culture models mimicking the tumor microenvironment in vivo are gaining attention. Herein, we investigated an alginate-based 3D scaffold for screening of 5-fluorouracil (5-FU) or/and curcumin on malignancy of colorectal cancer cells (CRC). Methods The potentiation effects of curcumin on 5-FU against proliferation and metastasis of HCT116 cell and its corresponding isogenic 5-FU-chemoresistant cells (HCT116R) were examined in a 3D-alginate tumor model. Results CRC cells encapsulated in alginate were able to proliferate in 3D-colonospheres in a vivo-like phenotype and invaded from alginate. During cultivation of cells in alginate, we could isolate 3 stages of cells, (1) alginate proliferating (2) invasive and (3) adherent cells. Tumor-promoting factors (CXCR4, MMP-9, NF-κB) were significantly increased in the proliferating and invasive compared to the adherent cells, however HCT116R cells overexpressed factors in comparison to the parental HCT116, suggesting an increase in malignancy behavior. In alginate, curcumin potentiated 5-FU-induced decreased capacity for proliferation, invasion and increased more sensitivity to 5-FU of HCT116R compared to the HCT116 cells. IC50 for HCT116 to 5-FU was 8nM, but co-treatment with 5 μM curcumin significantly reduced 5-FU concentrations in HCT116 and HCT116R cells (0.8nM, 0.1nM, respectively) and these effects were accompanied by down-regulation of NF-κB activation and NF-κB-regulated gene products. Conclusions Our results demonstrate that the alginate provides an excellent tumor microenvironment and indicate that curcumin potentiates and chemosensitizes HCT116R cells to 5-FU-based chemotherapy that may be useful for the treatment of CRC and to overcome drug resistance.
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Affiliation(s)
- Mehdi Shakibaei
- Institute of Anatomy, Ludwig-Maximilian-University Munich, Pettenkoferstrasse 11, D-80336, Munich, Germany.
| | - Patricia Kraehe
- Institute of Anatomy, Ludwig-Maximilian-University Munich, Pettenkoferstrasse 11, D-80336, Munich, Germany.
| | - Bastian Popper
- Department of Anatomy and Cell Biology, Ludwig-Maximilian-University Munich, D-80336, Munich, Germany.
| | - Parviz Shayan
- Investigating Institute of Molecular Biological System Transfer, Tehran, 1417863171, Iran. .,Department of Parasitology, Faculty of Veterinary Medicine, University of Tehran, Tehran, 141556453, Iran.
| | - Ajay Goel
- Gastrointestinal Cancer Research Laboratory, Division of Gastroenterology, Baylor Research Institute and Charles A. Sammons Cancer Center, Baylor University Medical Center, Dallas, TX, USA.
| | - Constanze Buhrmann
- Institute of Anatomy, Ludwig-Maximilian-University Munich, Pettenkoferstrasse 11, D-80336, Munich, Germany.
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Abstract
OBJECTIVE Family-centered care is a standard of practice in neonatal intensive care units (NICUs). The purpose of the study was to assess successes and opportunities for improvement with parents' experiences and involvement in their premature infants' care in NICUs. STUDY DESIGN Researchers' surveyed 502 parents whose children were currently < or =30 months old, had been born at a gestational age < or =36 weeks and had gone through or were currently in NICUs. RESULT Most parents of premature infants were reasonably satisfied with the access, attention and information received from physicians and nurses in the NICU. However, approximately one-fourth were only moderately satisfied and nearly 10% were dissatisfied. CONCLUSION While progress has been made in meeting the needs of parents in the NICU, more work needs to be carried out to improve family-centered care efforts. Specific attention should be given to providing more information and interaction opportunities for families, which may ultimately improve NICU outcomes.
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Affiliation(s)
- S D Berns
- 1National Office, March of Dimes Foundation, White Plains, NY, USA.
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Skvortsova I, Igitov V, Seppi T, Zwierzina H, Popper B, Lukas P. Modulation of CTL-activity by TNF-a during postoperative radiotherapy in colorectal cancer patients. Eur J Cancer 2001. [DOI: 10.1016/s0959-8049(01)81326-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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