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Chettouh-Hammas N, Grillon C. Physiological skin oxygen levels: An important criterion for skin cell functionality and therapeutic approaches. Free Radic Biol Med 2024; 222:259-274. [PMID: 38908804 DOI: 10.1016/j.freeradbiomed.2024.06.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 06/15/2024] [Accepted: 06/18/2024] [Indexed: 06/24/2024]
Abstract
The skin is made up of different layers with various gradients, which maintain a complex microenvironment, particularly in terms of oxygen levels. However, all types of skin cells are cultured in conventional incubators that do not reproduce physiological oxygen levels. Instead, they are cultured at atmospheric oxygen levels, a condition that is far removed from physiology and may lead to the generation of free radicals known to induce skin ageing. This review aims to summarize the current literature on the effect of physiological oxygen levels on skin cells, highlight the shortcomings of current in vitro models, and demonstrate the importance of respecting skin oxygen levels. We begin by clarifying the terminology used about oxygen levels and describe the specific distribution of oxygen in the skin. We review and discuss how skin cells adapt their oxygen consumption and metabolism to oxygen levels environment, as well as the changes that are induced, particularly, their redox state, life cycle and functions. We examine the effects of oxygen on both simple culture models and more complex reconstructed skin models. Finally, we present the implications of oxygen modulation for a more therapeutic approach.
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Affiliation(s)
- Nadira Chettouh-Hammas
- Center for Molecular Biophysics UPR4301 CNRS, Rue Charles Sadron, 45071, Orléans, Cedex 2, France.
| | - Catherine Grillon
- Center for Molecular Biophysics UPR4301 CNRS, Rue Charles Sadron, 45071, Orléans, Cedex 2, France.
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2
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Rogers ZJ, Colombani T, Khan S, Bhatt K, Nukovic A, Zhou G, Woolston BM, Taylor CT, Gilkes DM, Slavov N, Bencherif SA. Controlling Pericellular Oxygen Tension in Cell Culture Reveals Distinct Breast Cancer Responses to Low Oxygen Tensions. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2402557. [PMID: 38874400 DOI: 10.1002/advs.202402557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 04/11/2024] [Indexed: 06/15/2024]
Abstract
In oxygen (O2)-controlled cell culture, an indispensable tool in biological research, it is presumed that the incubator setpoint equals the O2 tension experienced by cells (i.e., pericellular O2). However, it is discovered that physioxic (5% O2) and hypoxic (1% O2) setpoints regularly induce anoxic (0% O2) pericellular tensions in both adherent and suspension cell cultures. Electron transport chain inhibition ablates this effect, indicating that cellular O2 consumption is the driving factor. RNA-seq analysis revealed that primary human hepatocytes cultured in physioxia experience ischemia-reperfusion injury due to cellular O2 consumption. A reaction-diffusion model is developed to predict pericellular O2 tension a priori, demonstrating that the effect of cellular O2 consumption has the greatest impact in smaller volume culture vessels. By controlling pericellular O2 tension in cell culture, it is found that hypoxia vs. anoxia induce distinct breast cancer transcriptomic and translational responses, including modulation of the hypoxia-inducible factor (HIF) pathway and metabolic reprogramming. Collectively, these findings indicate that breast cancer cells respond non-monotonically to low O2, suggesting that anoxic cell culture is not suitable for modeling hypoxia. Furthermore, it is shown that controlling atmospheric O2 tension in cell culture incubators is insufficient to regulate O2 in cell culture, thus introducing the concept of pericellular O2-controlled cell culture.
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Affiliation(s)
- Zachary J Rogers
- Department of Chemical Engineering, Northeastern University, Boston, MA, 02115, USA
| | - Thibault Colombani
- Department of Chemical Engineering, Northeastern University, Boston, MA, 02115, USA
| | - Saad Khan
- Department of Bioengineering, Northeastern University, Boston, MA, 02115, USA
| | - Khushbu Bhatt
- Department of Pharmaceutical Sciences, Northeastern University, Boston, MA, 02115, USA
| | - Alexandra Nukovic
- Department of Chemical Engineering, Northeastern University, Boston, MA, 02115, USA
| | - Guanyu Zhou
- Department of Chemical Engineering, Northeastern University, Boston, MA, 02115, USA
| | - Benjamin M Woolston
- Department of Chemical Engineering, Northeastern University, Boston, MA, 02115, USA
| | - Cormac T Taylor
- Conway Institute of Biomolecular and Biomedical Research and School of Medicine, University College Dublin, Belfield, Dublin, D04 V1W8, Ireland
| | - Daniele M Gilkes
- Department of Oncology, The Sidney Kimmel Comprehensive Cancer Center, The Johns Hopkins University School of Medicine, Baltimore, MD, 21321, USA
- Cellular and Molecular Medicine Program, The Johns Hopkins University School of Medicine, Baltimore, MD, 21321, USA
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD, 21218, USA
- Johns Hopkins Institute for NanoBioTechnology, The Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Nikolai Slavov
- Department of Bioengineering, Northeastern University, Boston, MA, 02115, USA
- Departments of Bioengineering, Biology, Chemistry and Chemical Biology, Single Cell Center and Barnett Institute, Northeastern University, Boston, MA, 02115, USA
- Parallel Squared Technology Institute, Watertown, MA, 02472, USA
| | - Sidi A Bencherif
- Department of Chemical Engineering, Northeastern University, Boston, MA, 02115, USA
- Department of Bioengineering, Northeastern University, Boston, MA, 02115, USA
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA
- Biomechanics and Bioengineering (BMBI), UTC CNRS UMR 7338, University of Technology of Compiègne, Sorbonne University, Compiègne, 60203, France
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3
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Huo J, Mówińska AM, Eren AN, Schoen J, Chen S. Oxygen levels affect oviduct epithelium functions in air-liquid interface culture. Histochem Cell Biol 2024; 161:521-537. [PMID: 38530407 PMCID: PMC11162385 DOI: 10.1007/s00418-024-02273-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/11/2024] [Indexed: 03/28/2024]
Abstract
Key reproductive events such as fertilization and early embryonic development occur in the lumen of the oviduct. Since investigating these processes in vivo is both technically challenging and ethically sensitive, cell culture models have been established to reproduce the oviductal microenvironment. Compartmentalized culture systems, particularly air-liquid interface cultures (ALI; cells access the culture medium only from the basolateral cell side), result in highly differentiated oviduct epithelial cell cultures. The oxygen (O2) tension within the oviduct is 4-10% across species, and its reduced O2 content is presumed to be important for early reproductive processes. However, cell culture models of the oviduct are typically cultivated without O2 regulation and therefore at about 18% O2. To investigate the impact of O2 levels on oviduct epithelium functions in vitro, we cultured porcine oviduct epithelial cells (POEC) at the ALI using both physiological (5%) and supraphysiological (18%) O2 levels and two different media regimes. Epithelium architecture, barrier function, secretion of oviduct fluid surrogate (OFS), and marker gene expression were comparatively assessed. Under all culture conditions, ALI-POEC formed polarized, ciliated monolayers with appropriate barrier function. Exposure to 18% O2 accelerated epithelial differentiation and significantly increased the apical OFS volume and total protein content. Expression of oviduct genes and the abundance of OVGP1 (oviduct-specific glycoprotein 1) in the OFS were influenced by both O2 tension and medium choice. In conclusion, oviduct epithelial cells can adapt to a supraphysiological O2 environment. This adaptation, however, may alter their capability to replicate in vivo tissue characteristics.
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Affiliation(s)
- Jianchao Huo
- Department of Reproduction Biology, Leibniz-Institute for Zoo and Wildlife Research (IZW), Alfred-Kowalke-Straße 17, 10315, Berlin, Germany
- Institute of Reproductive Biology, Research Institute for Farm Animal Biology (FBN), 18196, Dummerstorf, Germany
| | - Aleksandra Maria Mówińska
- Department of Reproduction Biology, Leibniz-Institute for Zoo and Wildlife Research (IZW), Alfred-Kowalke-Straße 17, 10315, Berlin, Germany
- Institute of Reproductive Biology, Research Institute for Farm Animal Biology (FBN), 18196, Dummerstorf, Germany
| | - Ali Necmi Eren
- Department of Reproduction Biology, Leibniz-Institute for Zoo and Wildlife Research (IZW), Alfred-Kowalke-Straße 17, 10315, Berlin, Germany
- Institute of Biotechnology, Technische Universität Berlin, 13355, Berlin, Germany
| | - Jennifer Schoen
- Department of Reproduction Biology, Leibniz-Institute for Zoo and Wildlife Research (IZW), Alfred-Kowalke-Straße 17, 10315, Berlin, Germany.
- Institute of Reproductive Biology, Research Institute for Farm Animal Biology (FBN), 18196, Dummerstorf, Germany.
- Institute of Biotechnology, Technische Universität Berlin, 13355, Berlin, Germany.
| | - Shuai Chen
- Department of Reproduction Biology, Leibniz-Institute for Zoo and Wildlife Research (IZW), Alfred-Kowalke-Straße 17, 10315, Berlin, Germany.
- Institute of Reproductive Biology, Research Institute for Farm Animal Biology (FBN), 18196, Dummerstorf, Germany.
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4
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Mallek NM, Martin EM, Dailey LA, McCullough SD. Liquid application dosing alters the physiology of air-liquid interface (ALI) primary human bronchial epithelial cell/lung fibroblast co-cultures and in vitro testing relevant endpoints. FRONTIERS IN TOXICOLOGY 2024; 5:1264331. [PMID: 38464699 PMCID: PMC10922929 DOI: 10.3389/ftox.2023.1264331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 12/14/2023] [Indexed: 03/12/2024] Open
Abstract
Differentiated primary human bronchial epithelial cell (dpHBEC) cultures grown under air-liquid interface (ALI) conditions exhibit key features of the human respiratory tract and are thus critical for respiratory research as well as efficacy and toxicity testing of inhaled substances (e.g., consumer products, industrial chemicals, and pharmaceuticals). Many inhalable substances (e.g., particles, aerosols, hydrophobic substances, reactive substances) have physiochemical properties that challenge their evaluation under ALI conditions in vitro. Evaluation of the effects of these methodologically challenging chemicals (MCCs) in vitro is typically conducted by "liquid application," involving the direct application of a solution containing the test substance to the apical, air-exposed surface of dpHBEC-ALI cultures. We report that the application of liquid to the apical surface of a dpHBEC-ALI co-culture model results in significant reprogramming of the dpHBEC transcriptome and biological pathway activity, alternative regulation of cellular signaling pathways, increased secretion of pro-inflammatory cytokines and growth factors, and decreased epithelial barrier integrity. Given the prevalence of liquid application in the delivery of test substances to ALI systems, understanding its effects provides critical infrastructure for the use of in vitro systems in respiratory research as well as in the safety and efficacy testing of inhalable substances.
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Affiliation(s)
- Nicholas M. Mallek
- Curriculum in Toxicology and Environmental Medicine, University of North Carolina, Chapel Hill, NC, United States
| | - Elizabeth M. Martin
- Epigenetics and Stem Cell Biology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Durham, NC, United States
| | - Lisa A. Dailey
- Public Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, United States Environmental Protection Agency, Chapel Hill, NC, United States
| | - Shaun D. McCullough
- Public Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, United States Environmental Protection Agency, Chapel Hill, NC, United States
- Exposure and Protection, RTI International, Durham, NC, United States
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5
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Schlichenmaier N, Zielinski A, Beneke S, Dietrich DR. PODO/TERT256 - A promising human immortalized podocyte cell line and its potential use for in vitro research at different oxygen levels. Chem Biol Interact 2024; 387:110813. [PMID: 38006960 DOI: 10.1016/j.cbi.2023.110813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 11/07/2023] [Accepted: 11/09/2023] [Indexed: 11/27/2023]
Abstract
Podocytes are of key interest for the prediction of nephrotoxicity as they are especially sensitive to toxic insults due to their central role in the glomerular filtration apparatus. However, currently, prediction of nephrotoxicity in humans remains insufficiently reliable, thus highlighting the need for advanced in vitro model systems using human cells with improved prediction capacity. Recent approaches for refining in vitro model systems focus on closely replicating physiological conditions as observed under the in vivo situation typical of the respective nephron section of interest. PODO/TERT256, a human immortalized podocyte cell line, were employed in a semi-static transwell system to evaluate its potential use as a human podocyte in vitro system for modelling potential human glomerular toxicity. Furthermore, the impact of routinely employed excessive oxygen tension (21 % - AtmOx), when compared to the physiological oxygen tensions (10 % - PhysOx) observed in vivo, was analyzed. Generally, cultured PODO/TERT256 formed a stable, contact-inhibited monolayer with typical podocyte morphology (large cell body, apical microvilli, finger-like cytoplasmic projections (reminiscent of foot processes), and interdigitating cell-cell junctions) and developed a size-selective filtration barrier. PhysOx, however, induced a more pronounced in vivo like phenotype, comprised of significantly larger cell bodies, significantly enhanced filtration barrier size-selectivity, and a remarkable re-localization of nephrin to the cell membrane, thus suggesting an improved in vitro replication of in vivo characteristics. Preliminary toxicity characterization with the known glomerulotoxin doxorubicin (DOX) suggested an increasing change in filtration permeability, already at the lowest DOX concentrations tested (0.01 μM) under PhysOx, whereas obvious changes under AtmOx were observed as of 0.16 μM and higher with a near all or nothing effect. The latter findings suggested that PODO/TERT256 could serve as an in vitro human podocyte model for studying glomerulotoxicity, whereby culturing at PhyOx tension appeared critical for an improved in vivo-like phenotype and functionality. Moreover, PODO/TERT256 could be incorporated into advanced human glomerulus systems in vitro, recapitulating microfluidic conditions and multiple cell types (endothelial and mesenchymal cells) that can even better predict human glomerular toxicity.
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Affiliation(s)
- Nadja Schlichenmaier
- Human and Environmental Toxicology, Department of Biology, University of Konstanz, Konstanz, Germany.
| | - Alexander Zielinski
- Human and Environmental Toxicology, Department of Biology, University of Konstanz, Konstanz, Germany.
| | - Sascha Beneke
- Human and Environmental Toxicology, Department of Biology, University of Konstanz, Konstanz, Germany.
| | - Daniel R Dietrich
- Human and Environmental Toxicology, Department of Biology, University of Konstanz, Konstanz, Germany.
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6
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Meyer K, Ling KH, Yeo PL, Spathopoulou A, Drake D, Choi J, Aron L, Garcia-Corral M, Ko T, Lee EA, Tam JM, Perlis RH, Church GM, Tsai LH, Yankner BA. Impaired neural stress resistance and loss of REST in bipolar disorder. Mol Psychiatry 2024; 29:153-164. [PMID: 37938767 DOI: 10.1038/s41380-023-02313-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 07/27/2023] [Accepted: 10/25/2023] [Indexed: 11/09/2023]
Abstract
Neurodevelopmental changes and impaired stress resistance have been implicated in the pathogenesis of bipolar disorder (BD), but the underlying regulatory mechanisms are unresolved. Here we describe a human cerebral organoid model of BD that exhibits altered neural development, elevated neural network activity, and a major shift in the transcriptome. These phenotypic changes were reproduced in cerebral organoids generated from iPS cell lines derived in different laboratories. The BD cerebral organoid transcriptome showed highly significant enrichment for gene targets of the transcriptional repressor REST. This was associated with reduced nuclear REST and REST binding to target gene recognition sites. Reducing the oxygen concentration in organoid cultures to a physiological range ameliorated the developmental phenotype and restored REST expression. These effects were mimicked by treatment with lithium. Reduced nuclear REST and derepression of REST targets genes were also observed in the prefrontal cortex of BD patients. Thus, an impaired cellular stress response in BD cerebral organoids leads to altered neural development and transcriptional dysregulation associated with downregulation of REST. These findings provide a new model and conceptual framework for exploring the molecular basis of BD.
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Affiliation(s)
- Katharina Meyer
- Department of Genetics, Harvard Medical School, Boston, MA, 02115, USA
| | - King-Hwa Ling
- Department of Genetics, Harvard Medical School, Boston, MA, 02115, USA
| | - Pei-Ling Yeo
- Department of Genetics, Harvard Medical School, Boston, MA, 02115, USA
| | | | - Derek Drake
- Department of Genetics, Harvard Medical School, Boston, MA, 02115, USA
| | - Jaejoon Choi
- Department of Genetics, Harvard Medical School, Boston, MA, 02115, USA
| | - Liviu Aron
- Department of Genetics, Harvard Medical School, Boston, MA, 02115, USA
| | - Mariana Garcia-Corral
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, 02115, USA
| | - Tak Ko
- The Picower Institute for Learning and Memory, Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Eunjung Alice Lee
- Division of Genetics and Genomics, Manton Center for Orphan Disease Research, Boston Children's Hospital, Boston, MA, 02115, USA
| | - Jenny M Tam
- Department of Genetics, Harvard Medical School, Boston, MA, 02115, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, 02115, USA
| | - Roy H Perlis
- Center for Quantitative Health, Center for Genomic Medicine and Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA
| | - George M Church
- Department of Genetics, Harvard Medical School, Boston, MA, 02115, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, 02115, USA
| | - Li-Huei Tsai
- The Picower Institute for Learning and Memory, Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Bruce A Yankner
- Department of Genetics, Harvard Medical School, Boston, MA, 02115, USA.
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7
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Trevisan R, Mello DF. Redox control of antioxidants, metabolism, immunity, and development at the core of stress adaptation of the oyster Crassostrea gigas to the dynamic intertidal environment. Free Radic Biol Med 2024; 210:85-106. [PMID: 37952585 DOI: 10.1016/j.freeradbiomed.2023.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 10/30/2023] [Accepted: 11/07/2023] [Indexed: 11/14/2023]
Abstract
This review uses the marine bivalve Crassostrea gigas to highlight redox reactions and control systems in species living in dynamic intertidal environments. Intertidal species face daily and seasonal environmental variability, including temperature, oxygen, salinity, and nutritional changes. Increasing anthropogenic pressure can bring pollutants and pathogens as additional stressors. Surprisingly, C. gigas demonstrates impressive adaptability to most of these challenges. We explore how ROS production, antioxidant protection, redox signaling, and metabolic adjustments can shed light on how redox biology supports oyster survival in harsh conditions. The review provides (i) a brief summary of shared redox sensing processes in metazoan; (ii) an overview of unique characteristics of the C. gigas intertidal habitat and the suitability of this species as a model organism; (iii) insights into the redox biology of C. gigas, including ROS sources, signaling pathways, ROS-scavenging systems, and thiol-containing proteins; and examples of (iv) hot topics that are underdeveloped in bivalve research linking redox biology with immunometabolism, physioxia, and development. Given its plasticity to environmental changes, C. gigas is a valuable model for studying the role of redox biology in the adaptation to harsh habitats, potentially providing novel insights for basic and applied studies in marine and comparative biochemistry and physiology.
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Affiliation(s)
- Rafael Trevisan
- Univ Brest, Ifremer, CNRS, IRD, UMR 6539, LEMAR, Plouzané, 29280, France
| | - Danielle F Mello
- Univ Brest, Ifremer, CNRS, IRD, UMR 6539, LEMAR, Plouzané, 29280, France.
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8
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Musawi S, Donnio LM, Zhao Z, Magnani C, Rassinoux P, Binda O, Huang J, Jacquier A, Coudert L, Lomonte P, Martinat C, Schaeffer L, Mottet D, Côté J, Mari PO, Giglia-Mari G. Nucleolar reorganization after cellular stress is orchestrated by SMN shuttling between nuclear compartments. Nat Commun 2023; 14:7384. [PMID: 37968267 PMCID: PMC10652021 DOI: 10.1038/s41467-023-42390-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 10/10/2023] [Indexed: 11/17/2023] Open
Abstract
Spinal muscular atrophy is an autosomal recessive neuromuscular disease caused by mutations in the multifunctional protein Survival of Motor Neuron, or SMN. Within the nucleus, SMN localizes to Cajal bodies, which are associated with nucleoli, nuclear organelles dedicated to the first steps of ribosome biogenesis. The highly organized structure of the nucleolus can be dynamically altered by genotoxic agents. RNAP1, Fibrillarin, and nucleolar DNA are exported to the periphery of the nucleolus after genotoxic stress and, once DNA repair is fully completed, the organization of the nucleolus is restored. We find that SMN is required for the restoration of the nucleolar structure after genotoxic stress. During DNA repair, SMN shuttles from the Cajal bodies to the nucleolus. This shuttling is important for nucleolar homeostasis and relies on the presence of Coilin and the activity of PRMT1.
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Affiliation(s)
- Shaqraa Musawi
- Pathophysiology and Genetics of Neuron and Muscle (INMG-PGNM), CNRS UMR 5261, INSERM U1315, Université Claude Bernard Lyon 1, 68008, Lyon, France
- Department of Medical Laboratories Technology, College of Applied Medical Sciences, Jazan University, Jazan, Saudi Arabia
| | - Lise-Marie Donnio
- Pathophysiology and Genetics of Neuron and Muscle (INMG-PGNM), CNRS UMR 5261, INSERM U1315, Université Claude Bernard Lyon 1, 68008, Lyon, France.
| | - Zehui Zhao
- Pathophysiology and Genetics of Neuron and Muscle (INMG-PGNM), CNRS UMR 5261, INSERM U1315, Université Claude Bernard Lyon 1, 68008, Lyon, France
| | - Charlène Magnani
- Pathophysiology and Genetics of Neuron and Muscle (INMG-PGNM), CNRS UMR 5261, INSERM U1315, Université Claude Bernard Lyon 1, 68008, Lyon, France
| | - Phoebe Rassinoux
- Pathophysiology and Genetics of Neuron and Muscle (INMG-PGNM), CNRS UMR 5261, INSERM U1315, Université Claude Bernard Lyon 1, 68008, Lyon, France
| | - Olivier Binda
- Pathophysiology and Genetics of Neuron and Muscle (INMG-PGNM), CNRS UMR 5261, INSERM U1315, Université Claude Bernard Lyon 1, 68008, Lyon, France
- Faculty of Medicine, Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, K1H 8M5, Ontario, Canada
| | - Jianbo Huang
- Pathophysiology and Genetics of Neuron and Muscle (INMG-PGNM), CNRS UMR 5261, INSERM U1315, Université Claude Bernard Lyon 1, 68008, Lyon, France
| | - Arnaud Jacquier
- Pathophysiology and Genetics of Neuron and Muscle (INMG-PGNM), CNRS UMR 5261, INSERM U1315, Université Claude Bernard Lyon 1, 68008, Lyon, France
| | - Laurent Coudert
- Pathophysiology and Genetics of Neuron and Muscle (INMG-PGNM), CNRS UMR 5261, INSERM U1315, Université Claude Bernard Lyon 1, 68008, Lyon, France
| | - Patrick Lomonte
- Pathophysiology and Genetics of Neuron and Muscle (INMG-PGNM), CNRS UMR 5261, INSERM U1315, Université Claude Bernard Lyon 1, 68008, Lyon, France
| | - Cécile Martinat
- INSERM/UEPS UMR 861, Paris Saclay Université, I-STEM, 91100, Corbeil-Essonnes, France
| | - Laurent Schaeffer
- Pathophysiology and Genetics of Neuron and Muscle (INMG-PGNM), CNRS UMR 5261, INSERM U1315, Université Claude Bernard Lyon 1, 68008, Lyon, France
| | - Denis Mottet
- GIGA-Molecular Biology of Diseases, Gene Expression and Cancer Laboratory, B34 + 1, University of Liege, Avenue de l'Hôpital 1, B-4000, Liège, Belgium
| | - Jocelyn Côté
- Faculty of Medicine, Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, K1H 8M5, Ontario, Canada
| | - Pierre-Olivier Mari
- Pathophysiology and Genetics of Neuron and Muscle (INMG-PGNM), CNRS UMR 5261, INSERM U1315, Université Claude Bernard Lyon 1, 68008, Lyon, France
| | - Giuseppina Giglia-Mari
- Pathophysiology and Genetics of Neuron and Muscle (INMG-PGNM), CNRS UMR 5261, INSERM U1315, Université Claude Bernard Lyon 1, 68008, Lyon, France.
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9
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Gruzdev N, Pitcovski J, Katz C, Ruimi N, Eliahu D, Noach C, Rosenzweig E, Finger A, Shahar E. Development of toxin-antitoxin self-destructive bacteria, aimed for salmonella vaccination. Vaccine 2023:S0264-410X(23)00777-6. [PMID: 37400285 DOI: 10.1016/j.vaccine.2023.06.074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 06/19/2023] [Accepted: 06/24/2023] [Indexed: 07/05/2023]
Abstract
The most common source of foodborne Salmonella infection in humans is poultry eggs and meat, such that prevention of human infection is mostly achieved by vaccination of farm animals. While inactivated and attenuated vaccines are available, both present drawbacks. This study aimed to develop a novel vaccination strategy, which combines the effectiveness of live-attenuated and safety of inactivated vaccines by construction of inducible self-destructing bacteria utilizing toxin-antitoxin (TA) systems. Hok-Sok and CeaB-CeiB toxin-antitoxin systems were coupled with three induction systems aimed for activating cell killing upon lack of arabinose, anaerobic conditions or low concentration of metallic di-cations. The constructs were transformed into a pathogenic Salmonella enterica serovar Enteritidis strain and bacteria elimination was evaluated in vitro under specific activating conditions and in vivo following administration to chickens. Four constructs induced bacterial killing under the specified conditions, both in growth media and within macrophages. Cloacal swabs of all chicks orally administered transformed bacteria had no detectable levels of bacteria within 9 days of inoculation. By day ten, no bacteria were identified in the spleen and liver of most birds. Antibody immune response was raised toward TA carrying Salmonella which resembled response toward the wildtype bacteria. The constructs described in this study led to self-destruction of virulent Salmonella enteritidis both in vitro and in inoculated animals within a period which is sufficient for the induction of a protective immune response. This system may serve as a safe and effective live vaccine platform against Salmonella as well as other pathogenic bacteria.
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Affiliation(s)
- Nady Gruzdev
- MIGAL Research Institute in the Galilee, Kiryat Shmona, Israel
| | - Jacob Pitcovski
- MIGAL Research Institute in the Galilee, Kiryat Shmona, Israel; Tel-Hai Academic College, Upper Galilee, Israel
| | - Chen Katz
- MIGAL Research Institute in the Galilee, Kiryat Shmona, Israel
| | - Nili Ruimi
- MIGAL Research Institute in the Galilee, Kiryat Shmona, Israel
| | - Dalia Eliahu
- MIGAL Research Institute in the Galilee, Kiryat Shmona, Israel
| | | | | | | | - Ehud Shahar
- MIGAL Research Institute in the Galilee, Kiryat Shmona, Israel; Tel-Hai Academic College, Upper Galilee, Israel.
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Chettouh-Hammas N, Fasani F, Boileau A, Gosset D, Busco G, Grillon C. Improvement of Antioxidant Defences in Keratinocytes Grown in Physioxia: Comparison of 2D and 3D Models. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2023; 2023:6829931. [PMID: 37360501 PMCID: PMC10290565 DOI: 10.1155/2023/6829931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 04/25/2023] [Accepted: 05/27/2023] [Indexed: 06/28/2023]
Abstract
Keratinocytes prevent skin photoaging by ensuring the defence against oxidative stress, an excessive production of reactive oxygen species (ROS). They are localized within the epidermis where the oxygen level (1-3% O2), named physioxia, is low compared to other organs. Oxygen is essential for life but also generates ROS. Most of the in vitro studies on keratinocyte antioxidant capacities are performed under atmospheric oxygen, named normoxia, which is very far from the physiological microenvironment, thus submitting cells to an overoxygenation. The present study is aimed at investigating the antioxidant status of keratinocyte grown under physioxia in both 2D and 3D models. First, we show that the basal antioxidant profiles of keratinocytes display important differences when comparing the HaCaT cell line, primary keratinocytes (NHEK), reconstructed epidermis (RHE), and skin explants. Physioxia was shown to promote a strong proliferation of keratinocytes in monolayers and in RHE, resulting in a thinner epidermis likely due to a slowdown in cell differentiation. Interestingly, cells in physioxia exhibited a lower ROS production upon stress, suggesting a better protection against oxidative stress. To understand this effect, we studied the antioxidant enzymes and reported a lower or equivalent level of mRNA for all enzymes in physioxia conditions compared to normoxia, but a higher activity for catalase and superoxide dismutases, whatever the culture model. The unchanged catalase amount, in NHEK and RHE, suggests an overactivation of the enzyme in physioxia, whereas the higher amount of SOD2 can explain the strong activity. Taken together, our results demonstrate the role of oxygen in the regulation of the antioxidant defences in keratinocytes, topic of particular importance for studying skin aging. Additionally, the present work points out the interest of the choice of both the keratinocyte culture model and the oxygen level to be as close as possible to the in situ skin.
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Affiliation(s)
- Nadira Chettouh-Hammas
- Center for Molecular Biophysics UPR4301 CNRS, Rue Charles Sadron, 45071 Orléans Cedex 2, France
| | - Fabienne Fasani
- Center for Molecular Biophysics UPR4301 CNRS, Rue Charles Sadron, 45071 Orléans Cedex 2, France
| | - Amandine Boileau
- Center for Molecular Biophysics UPR4301 CNRS, Rue Charles Sadron, 45071 Orléans Cedex 2, France
| | - David Gosset
- Center for Molecular Biophysics UPR4301 CNRS, Rue Charles Sadron, 45071 Orléans Cedex 2, France
| | - Giovanni Busco
- Center for Molecular Biophysics UPR4301 CNRS, Rue Charles Sadron, 45071 Orléans Cedex 2, France
| | - Catherine Grillon
- Center for Molecular Biophysics UPR4301 CNRS, Rue Charles Sadron, 45071 Orléans Cedex 2, France
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11
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Paik S, Song GY, Jo EK. Ginsenosides for therapeutically targeting inflammation through modulation of oxidative stress. Int Immunopharmacol 2023; 121:110461. [PMID: 37331298 DOI: 10.1016/j.intimp.2023.110461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 05/20/2023] [Accepted: 06/04/2023] [Indexed: 06/20/2023]
Abstract
Ginsenosides are steroid glycosides derived from ginseng plants such as Panax ginseng, Panax quinquefolium, and Panax notoginseng. Advances in recent studies have identified numerous physiological functions of each type of ginsenoside, i.e., immunomodulatory, antioxidative, and anti-inflammatory functions, in the context of inflammatory diseases. Accumulating evidence has revealed the molecular mechanisms by which the single or combined ginsenoside(s) exhibit anti-inflammatory effects, although it remains largely unclear. It is well known that excessive production of reactive oxygen species (ROS) is associated with pathological inflammation and cell death in a variety of cells, and that inhibition of ROS generation ameliorates the local and systemic inflammatory responses. The mechanisms by which ginsenosides attenuate inflammation are largely unknown; however, targeting ROS is suggested as one of the crucial mechanisms for the ginsenosides to control the pathological inflammation in the immune and non-immune cells. This review will summarize the latest progress in ginsenoside studies, particularly in the context of antioxidant mechanisms for its anti-inflammatory effects. A better understanding of the distinct types and the combined action of ginsenosides will pave the way for developing potential preventive and therapeutic modalities in treating various inflammation-related diseases.
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Affiliation(s)
- Seungwha Paik
- Department of Microbiology, Chungnam National University School of Medicine, Daejeon, 35015, South Korea; Department of Medical Science, Chungnam National University School of Medicine, Daejeon, 35015, South Korea.
| | - Gyu Yong Song
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon, 35015, South Korea; College of Pharmacy, Chungnam National University, Daejeon, 34134, South Korea
| | - Eun-Kyeong Jo
- Department of Microbiology, Chungnam National University School of Medicine, Daejeon, 35015, South Korea; Department of Medical Science, Chungnam National University School of Medicine, Daejeon, 35015, South Korea; Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon, 35015, South Korea.
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12
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Yang F, Smith MJ, Griffiths A, Morrell A, Chapple SJ, Siow RCM, Stewart T, Maret W, Mann GE. Vascular protection afforded by zinc supplementation in human coronary artery smooth muscle cells mediated by NRF2 signaling under hypoxia/reoxygenation. Redox Biol 2023; 64:102777. [PMID: 37315344 PMCID: PMC10363453 DOI: 10.1016/j.redox.2023.102777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 06/05/2023] [Accepted: 06/06/2023] [Indexed: 06/16/2023] Open
Abstract
Zinc (Zn) has antioxidant, anti-inflammatory and anti-proliferative actions, with Zn dysregulation associated with coronary ischemia/reperfusion injury and smooth muscle cell dysfunction. As the majority of studies concerning Zn have been conducted under non-physiological hyperoxic conditions, we compare the effects of Zn chelation or supplementation on total intracellular Zn content, antioxidant NRF2 targeted gene transcription and hypoxia/reoxygenation-induced reactive oxygen species generation in human coronary artery smooth muscle cells (HCASMC) pre-adapted to hyperoxia (18 kPa O2) or normoxia (5 kPa O2). Expression of the smooth muscle marker SM22-α was unaffected by lowering pericellular O2, whereas calponin-1 was significantly upregulated in cells under 5 kPa O2, indicating a more physiological contractile phenotype under 5 kPa O2. Inductively coupled plasma mass spectrometry established that Zn supplementation (10 μM ZnCl2 + 0.5 μM pyrithione) significantly increased total Zn content in HCASMC under 18 but not 5 kPa O2. Zn supplementation increased metallothionein mRNA expression and NRF2 nuclear accumulation in cells under 18 or 5 kPa O2. Notably, NRF2 regulated HO-1 and NQO1 mRNA expression in response to Zn supplementation was only upregulated in cells under 18 but not 5 kPa. Furthermore, whilst hypoxia increased intracellular glutathione (GSH) in cells pre-adapted to 18 but not 5 kPa O2, reoxygenation had negligible effects on GSH or total Zn content. Reoxygenation-induced superoxide generation in cells under 18 kPa O2 was abrogated by PEG-superoxide dismutase but not by PEG-catalase, and Zn supplementation, but not Zn chelation, attenuated reoxygenation-induced superoxide generation in cells under 18 but not 5kPaO2, consistent with a lower redox stress under physiological normoxia. Our findings highlight that culture of HCASMC under physiological normoxia recapitulates an in vivo contractile phenotype and that effects of Zn on NRF2 signaling are altered by oxygen tension.
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Affiliation(s)
- Fan Yang
- King's British Heart Foundation Centre of Research Excellence, School of Cardiovascular and Metabolic Medicine & Sciences, Faculty of Life Sciences & Medicine, King's College London, 150 Stamford Street, London, SE1 9NH, UK.
| | - Matthew J Smith
- King's British Heart Foundation Centre of Research Excellence, School of Cardiovascular and Metabolic Medicine & Sciences, Faculty of Life Sciences & Medicine, King's College London, 150 Stamford Street, London, SE1 9NH, UK
| | - Alexander Griffiths
- London Metallomics Facility, Faculty of Life Sciences & Medicine, King's College London, UK
| | - Alexander Morrell
- London Metallomics Facility, Faculty of Life Sciences & Medicine, King's College London, UK
| | - Sarah J Chapple
- King's British Heart Foundation Centre of Research Excellence, School of Cardiovascular and Metabolic Medicine & Sciences, Faculty of Life Sciences & Medicine, King's College London, 150 Stamford Street, London, SE1 9NH, UK
| | - Richard C M Siow
- King's British Heart Foundation Centre of Research Excellence, School of Cardiovascular and Metabolic Medicine & Sciences, Faculty of Life Sciences & Medicine, King's College London, 150 Stamford Street, London, SE1 9NH, UK
| | - Theodora Stewart
- Research Management & Innovation Directorate (RMID), King's College London, UK
| | - Wolfgang Maret
- Departments of Biochemistry and Nutritional Sciences, School of Life Course & Population Sciences, Faculty of Life Sciences & Medicine, King's College London, UK
| | - Giovanni E Mann
- King's British Heart Foundation Centre of Research Excellence, School of Cardiovascular and Metabolic Medicine & Sciences, Faculty of Life Sciences & Medicine, King's College London, 150 Stamford Street, London, SE1 9NH, UK.
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13
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Pinho SA, Anjo SI, Cunha-Oliveira T. Metabolic Priming as a Tool in Redox and Mitochondrial Theragnostics. Antioxidants (Basel) 2023; 12:antiox12051072. [PMID: 37237939 DOI: 10.3390/antiox12051072] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/05/2023] [Accepted: 05/06/2023] [Indexed: 05/28/2023] Open
Abstract
Theragnostics is a promising approach that integrates diagnostics and therapeutics into a single personalized strategy. To conduct effective theragnostic studies, it is essential to create an in vitro environment that accurately reflects the in vivo conditions. In this review, we discuss the importance of redox homeostasis and mitochondrial function in the context of personalized theragnostic approaches. Cells have several ways to respond to metabolic stress, including changes in protein localization, density, and degradation, which can promote cell survival. However, disruption of redox homeostasis can lead to oxidative stress and cellular damage, which are implicated in various diseases. Models of oxidative stress and mitochondrial dysfunction should be developed in metabolically conditioned cells to explore the underlying mechanisms of diseases and develop new therapies. By choosing an appropriate cellular model, adjusting cell culture conditions and validating the cellular model, it is possible to identify the most promising therapeutic options and tailor treatments to individual patients. Overall, we highlight the importance of precise and individualized approaches in theragnostics and the need to develop accurate in vitro models that reflect the in vivo conditions.
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Affiliation(s)
- Sónia A Pinho
- CNC-Center for Neuroscience and Cell Biology, CIBB-Centre for Innovative Biomedicine and Biotechnology, University of Coimbra, 3060-197 Cantanhede, Portugal
- PDBEB-PhD Programme in Experimental Biology and Biomedicine, Institute of Interdisciplinary Research (IIIUC), University of Coimbra, 3004-504 Coimbra, Portugal
- IIIUC, University of Coimbra, 3004-504 Coimbra, Portugal
| | - Sandra I Anjo
- CNC-Center for Neuroscience and Cell Biology, CIBB-Centre for Innovative Biomedicine and Biotechnology, University of Coimbra, 3060-197 Cantanhede, Portugal
- IIIUC, University of Coimbra, 3004-504 Coimbra, Portugal
| | - Teresa Cunha-Oliveira
- CNC-Center for Neuroscience and Cell Biology, CIBB-Centre for Innovative Biomedicine and Biotechnology, University of Coimbra, 3060-197 Cantanhede, Portugal
- IIIUC, University of Coimbra, 3004-504 Coimbra, Portugal
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14
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Fu Z, Zhang Y, Geng X, Chi K, Liu C, Song C, Cai G, Chen X, Hong Q. Optimization strategies of mesenchymal stem cell-based therapy for acute kidney injury. Stem Cell Res Ther 2023; 14:116. [PMID: 37122024 PMCID: PMC10150535 DOI: 10.1186/s13287-023-03351-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 04/20/2023] [Indexed: 05/02/2023] Open
Abstract
Considering the high prevalence and the lack of targeted pharmacological management of acute kidney injury (AKI), the search for new therapeutic approaches for it is in urgent demand. Mesenchymal stem cells (MSCs) have been increasingly recognized as a promising candidate for the treatment of AKI. However, clinical translation of MSCs-based therapies is hindered due to the poor retention and survival rates as well as the impaired paracrine ability of MSCs post-delivery. To address these issues, a series of strategies including local administration, three-dimensional culture, and preconditioning have been applied. Owing to the emergence and development of these novel biotechnologies, the effectiveness of MSCs in experimental AKI models is greatly improved. Here, we summarize the different approaches suggested to optimize the efficacy of MSCs therapy, aiming at promoting the therapeutic effects of MSCs on AKI patients.
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Affiliation(s)
- Zhangning Fu
- Medical School of Chinese PLA, Beijing, China
- Department of Nephrology, First Medical Center of Chinese PLA General Hospital, Nephrology Institute of the Chinese PLA, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Disease Research, Beijing, China
| | - Yifan Zhang
- Medical School of Chinese PLA, Beijing, China
- Department of Nephrology, First Medical Center of Chinese PLA General Hospital, Nephrology Institute of the Chinese PLA, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Disease Research, Beijing, China
| | - Xiaodong Geng
- Department of Nephrology, First Medical Center of Chinese PLA General Hospital, Nephrology Institute of the Chinese PLA, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Disease Research, Beijing, China
- Beidaihe Rehabilitation and Recuperation Center, Chinese People's Liberation Army Joint Logistics Support Force, Qinhuangdao, China
| | - Kun Chi
- Medical School of Chinese PLA, Beijing, China
- Department of Nephrology, First Medical Center of Chinese PLA General Hospital, Nephrology Institute of the Chinese PLA, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Disease Research, Beijing, China
| | - Chao Liu
- Department of Critical Care Medicine, First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Chengcheng Song
- Department of Nephrology, Beijing Electric Power Hospital, Beijing, China
| | - Guangyan Cai
- Department of Nephrology, First Medical Center of Chinese PLA General Hospital, Nephrology Institute of the Chinese PLA, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Disease Research, Beijing, China
| | - Xiangmei Chen
- Department of Nephrology, First Medical Center of Chinese PLA General Hospital, Nephrology Institute of the Chinese PLA, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Disease Research, Beijing, China
| | - Quan Hong
- Department of Nephrology, First Medical Center of Chinese PLA General Hospital, Nephrology Institute of the Chinese PLA, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Disease Research, Beijing, China.
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15
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Man K, Eisenstein NM, Hoey DA, Cox SC. Bioengineering extracellular vesicles: smart nanomaterials for bone regeneration. J Nanobiotechnology 2023; 21:137. [PMID: 37106449 PMCID: PMC10134574 DOI: 10.1186/s12951-023-01895-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 04/13/2023] [Indexed: 04/29/2023] Open
Abstract
In the past decade, extracellular vesicles (EVs) have emerged as key regulators of bone development, homeostasis and repair. EV-based therapies have the potential to circumnavigate key issues hindering the translation of cell-based therapies including functional tissue engraftment, uncontrolled differentiation and immunogenicity issues. Due to EVs' innate biocompatibility, low immunogenicity, and high physiochemical stability, these naturally-derived nanoparticles have garnered growing interest as potential acellular nanoscale therapeutics for a variety of diseases. Our increasing knowledge of the roles these cell-derived nanoparticles play, has made them an exciting focus in the development of novel pro-regenerative therapies for bone repair. Although these nano-sized vesicles have shown promise, their clinical translation is hindered due to several challenges in the EV supply chain, ultimately impacting therapeutic efficacy and yield. From the biochemical and biophysical stimulation of parental cells to the transition to scalable manufacture or maximising vesicles therapeutic response in vivo, a multitude of techniques have been employed to improve the clinical efficacy of EVs. This review explores state of the art bioengineering strategies to promote the therapeutic utility of vesicles beyond their native capacity, thus maximising the clinical potential of these pro-regenerative nanoscale therapeutics for bone repair.
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Affiliation(s)
- Kenny Man
- School of Chemical Engineering, University of Birmingham, Birmingham, B15 2TT, UK
| | - Neil M Eisenstein
- Research and Clinical Innovation, Royal Centre for Defence Medicine, ICT Centre, Vincent Drive, Birmingham, B15 2SQ, UK
- Institute of Translational Medicine, University of Birmingham, Heritage Building, Mindelsohn Way, Birmingham, B15 2TH, UK
| | - David A Hoey
- Trinity Centre for Biomedical Engineering, Trinity Biomedical Sciences Institute, Trinity College, Dublin, D02 R590, Ireland
- Dept. of Mechanical, Manufacturing, and Biomedical Engineering, School of Engineering, Trinity College, Dublin 2, D02 DK07, Dublin, Ireland
- Advanced Materials and Bioengineering Research Centre, Trinity College Dublin & RCSI, Dublin 2, D02 VN51, Dublin, Ireland
| | - Sophie C Cox
- School of Chemical Engineering, University of Birmingham, Birmingham, B15 2TT, UK.
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16
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Smith MJ, Yang F, Griffiths A, Morrell A, Chapple SJ, Siow RCM, Stewart T, Maret W, Mann GE. Redox and metal profiles in human coronary endothelial and smooth muscle cells under hyperoxia, physiological normoxia and hypoxia: Effects of NRF2 signaling on intracellular zinc. Redox Biol 2023; 62:102712. [PMID: 37116256 PMCID: PMC10165141 DOI: 10.1016/j.redox.2023.102712] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 04/18/2023] [Accepted: 04/21/2023] [Indexed: 04/30/2023] Open
Abstract
Zinc is an important component of cellular antioxidant defenses and dysregulation of zinc homeostasis is a risk factor for coronary heart disease and ischemia/reperfusion injury. Intracellular homeostasis of metals, such as zinc, iron and calcium are interrelated with cellular responses to oxidative stress. Most cells experience significantly lower oxygen levels in vivo (2-10 kPa O2) compared to standard in vitro cell culture (18kPa O2). We report the first evidence that total intracellular zinc content decreases significantly in human coronary artery endothelial cells (HCAEC), but not in human coronary artery smooth muscle cells (HCASMC), after lowering of O2 levels from hyperoxia (18 kPa O2) to physiological normoxia (5 kPa O2) and hypoxia (1 kPa O2). This was paralleled by O2-dependent differences in redox phenotype based on measurements of glutathione, ATP and NRF2-targeted protein expression in HCAEC and HCASMC. NRF2-induced NQO1 expression was attenuated in both HCAEC and HCASMC under 5 kPa O2 compared to 18 kPa O2. Expression of the zinc efflux transporter ZnT1 increased in HCAEC under 5 kPa O2, whilst expression of the zinc-binding protein metallothionine (MT) decreased as O2 levels were lowered from 18 to 1 kPa O2. Negligible changes in ZnT1 and MT expression were observed in HCASMC. Silencing NRF2 transcription reduced total intracellular zinc under 18 kPa O2 in HCAEC with negligible changes in HCASMC, whilst NRF2 activation or overexpression increased zinc content in HCAEC, but not HCASMC, under 5 kPa O2. This study has identified cell type specific changes in the redox phenotype and metal profile in human coronary artery cells under physiological O2 levels. Our findings provide novel insights into the effect of NRF2 signaling on Zn content and may inform targeted therapies for cardiovascular diseases.
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Affiliation(s)
- Matthew J Smith
- King's British Heart Foundation Centre of Research Excellence, School of Cardiovascular and Metabolic Medicine & Sciences, Faculty of Life Sciences & Medicine, King's College London, 150 Stamford Street, London, SE1 9NH, UK
| | - Fan Yang
- King's British Heart Foundation Centre of Research Excellence, School of Cardiovascular and Metabolic Medicine & Sciences, Faculty of Life Sciences & Medicine, King's College London, 150 Stamford Street, London, SE1 9NH, UK
| | - Alexander Griffiths
- London Metallomics Facility, Faculty of Life Sciences & Medicine, King's College London, UK
| | - Alexander Morrell
- London Metallomics Facility, Faculty of Life Sciences & Medicine, King's College London, UK
| | - Sarah J Chapple
- King's British Heart Foundation Centre of Research Excellence, School of Cardiovascular and Metabolic Medicine & Sciences, Faculty of Life Sciences & Medicine, King's College London, 150 Stamford Street, London, SE1 9NH, UK
| | - Richard C M Siow
- King's British Heart Foundation Centre of Research Excellence, School of Cardiovascular and Metabolic Medicine & Sciences, Faculty of Life Sciences & Medicine, King's College London, 150 Stamford Street, London, SE1 9NH, UK
| | - Theodora Stewart
- Research Management & Innovation Directorate (RMID), King's College London, UK
| | - Wolfgang Maret
- Departments of Biochemistry and Nutritional Sciences, School of Life Course & Population Sciences, Faculty of Life Sciences & Medicine, King's College London, UK
| | - Giovanni E Mann
- King's British Heart Foundation Centre of Research Excellence, School of Cardiovascular and Metabolic Medicine & Sciences, Faculty of Life Sciences & Medicine, King's College London, 150 Stamford Street, London, SE1 9NH, UK.
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17
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Magallón M, Castillo-Corullón S, Bañuls L, Pellicer D, Romero T, Martínez-Ferraro C, Navarro-García MM, Herrejón A, González C, Dasí F. Hypoxia Enhances Oxidative Stress in Neutrophils from ZZ Alpha-1 Antitrypsin Deficiency Patients. Antioxidants (Basel) 2023; 12:antiox12040872. [PMID: 37107247 PMCID: PMC10135227 DOI: 10.3390/antiox12040872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 03/27/2023] [Accepted: 03/31/2023] [Indexed: 04/07/2023] Open
Abstract
Alpha-1 antitrypsin deficiency (AATD) is a neutrophilic inflammatory disorder that may result in local hypoxia, reactive oxygen and nitrogen species (ROS/RNS) production, and increased damage in adjacent tissues. This study aims to determine the impact of hypoxia on neutrophil oxidative stress profile in AATD patients. Neutrophils were isolated from AATD patients and control volunteers and exposed to hypoxia (1% O2 for 4 h), ROS/RNS, mitochondrial parameters, and non-enzymatic antioxidant defenses measured by flow cytometry. The expression of enzymatic antioxidant defenses was determined by qRT-PCR. Our results indicate that ZZ-AATD neutrophils produce higher amounts of hydrogen peroxide, peroxynitrite, and nitric oxide and decreased levels of the antioxidant enzymes catalase, superoxide dismutase, and glutathione reductase. Likewise, our results show a decrease in mitochondrial membrane potential, indicating that this organelle could be involved in the production of the reactive species observed. No decrease in glutathione and thiol levels were observed. The accumulation of substances with high oxidative capacity would explain the greater oxidative damage observed in proteins and lipids. In conclusion, our results indicate that, compared to MM control individuals, ZZ-AATD neutrophils show increased ROS/RNS production under hypoxic conditions opening a new rationale for using antioxidant therapies to treat the disease.
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Affiliation(s)
- María Magallón
- School of Medicine, Department of Physiology, University of Valencia, Avda. Blasco Ibáñez, 15, 46010 Valencia, Spain
- IIS INCLIVA, Rare Respiratory Diseases Group, Avda. Menéndez y Pelayo, 4, 46010 Valencia, Spain
| | - Silvia Castillo-Corullón
- IIS INCLIVA, Rare Respiratory Diseases Group, Avda. Menéndez y Pelayo, 4, 46010 Valencia, Spain
- Pediatrics Unit, Hospital Clínico Universitario de Valencia, Avda. Blasco Ibáñez, 17, 46010 Valencia, Spain
- School of Medicine, Department of Paediatrics, University of Valencia, Avda. Blasco Ibáñez, 15, 46010 Valencia, Spain
| | - Lucía Bañuls
- School of Medicine, Department of Physiology, University of Valencia, Avda. Blasco Ibáñez, 15, 46010 Valencia, Spain
- IIS INCLIVA, Rare Respiratory Diseases Group, Avda. Menéndez y Pelayo, 4, 46010 Valencia, Spain
| | - Daniel Pellicer
- School of Medicine, Department of Physiology, University of Valencia, Avda. Blasco Ibáñez, 15, 46010 Valencia, Spain
- IIS INCLIVA, Rare Respiratory Diseases Group, Avda. Menéndez y Pelayo, 4, 46010 Valencia, Spain
| | - Teresa Romero
- Pediatrics Unit, Hospital de Manises, Avda. Generalitat Valenciana, 50, 46940 Manises, Spain
| | - Carlos Martínez-Ferraro
- Pediatrics Unit, Hospital Clínico Universitario de Valencia, Avda. Blasco Ibáñez, 17, 46010 Valencia, Spain
| | | | - Alberto Herrejón
- Pulmonology Unit, Hospital Doctor Peset, Avda. Gaspar Aguilar, 90, 46017 Valencia, Spain
| | - Cruz González
- IIS INCLIVA, Rare Respiratory Diseases Group, Avda. Menéndez y Pelayo, 4, 46010 Valencia, Spain
- Pulmonology Unit, Hospital Clínico Universitario de Valencia, Avda. Blasco Ibáñez, 17, 46010 Valencia, Spain
| | - Francisco Dasí
- School of Medicine, Department of Physiology, University of Valencia, Avda. Blasco Ibáñez, 15, 46010 Valencia, Spain
- IIS INCLIVA, Rare Respiratory Diseases Group, Avda. Menéndez y Pelayo, 4, 46010 Valencia, Spain
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Reflections on the Biology of Cell Culture Models: Living on the Edge of Oxidative Metabolism in Cancer Cells. Int J Mol Sci 2023; 24:ijms24032717. [PMID: 36769044 PMCID: PMC9916950 DOI: 10.3390/ijms24032717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 01/25/2023] [Accepted: 01/27/2023] [Indexed: 02/04/2023] Open
Abstract
Nowadays, the study of cell metabolism is a hot topic in cancer research. Many studies have used 2D conventional cell cultures for their simplicity and the facility to infer mechanisms. However, the limitations of bidimensional cell cultures to recreate architecture, mechanics, and cell communication between tumor cells and their environment, have forced the development of other more realistic in vitro methodologies. Therefore, the explosion of 3D culture techniques and the necessity to reduce animal experimentation to a minimum has attracted the attention of researchers in the field of cancer metabolism. Here, we revise the limitations of actual culture models and discuss the utility of several 3D culture techniques to resolve those limitations.
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19
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Adebayo AK, Nakshatri H. Modeling Preclinical Cancer Studies under Physioxia to Enhance Clinical Translation. Cancer Res 2022; 82:4313-4321. [PMID: 36169928 PMCID: PMC9722631 DOI: 10.1158/0008-5472.can-22-2311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/31/2022] [Accepted: 09/23/2022] [Indexed: 01/24/2023]
Abstract
Oxygen (O2) plays a key role in cellular homeostasis. O2 levels are tightly regulated in vivo such that each tissue receives an optimal amount to maintain physiologic status. Physiologic O2 levels in various organs range between 2% and 9% in vivo, with the highest levels of 9% in the kidneys and the lowest of 0.5% in parts of the brain. This physiologic range of O2 tensions is disrupted in pathologic conditions such as cancer, where it can reach as low as 0.5%. Regardless of the state, O2 tension in vivo is maintained at significantly lower levels than ambient O2, which is approximately 21%. Yet, routine in vitro cellular manipulations are carried out in ambient air, regardless of whether or not they are eventually transferred to hypoxic conditions for subsequent studies. Even brief exposure of hematopoietic stem cells to ambient air can cause detrimental effects through a mechanism termed extraphysiologic oxygen shock/stress (EPHOSS), leading to reduced engraftment capabilities. Here, we provide an overview of the effects of ambient air exposure on stem and non-stem cell subtypes, with a focus on recent findings that reveal the impact of EPHOSS on cancer cells.
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Affiliation(s)
- Adedeji K. Adebayo
- Department of Surgery, Indiana University School of Medicine, Indianapolis, IN 46202, USA
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
- Indiana University Simon Comprehensive Cancer Center, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Harikrishna Nakshatri
- Department of Surgery, Indiana University School of Medicine, Indianapolis, IN 46202, USA
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
- Indiana University Simon Comprehensive Cancer Center, Indiana University School of Medicine, Indianapolis, IN 46202, USA
- Roudebush VA Medical Center, Indianapolis, IN 46202, USA
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Shimura T, Totani R, Ogasawara H, Inomata K, Sasatani M, Kamiya K, Ushiyama A. Effects of oxygen on the response of mitochondria to X-irradiation and reactive oxygen species-mediated fibroblast activation. Int J Radiat Biol 2022; 99:769-778. [PMID: 36383181 DOI: 10.1080/09553002.2023.2142980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
PURPOSE In living organisms, sensitivity to radiation increases in the presence of oxygen (O2) compared with that under anoxic or hypoxic conditions. Here, we investigated whether O2 concentration affected the response of mitochondria to X-rays radiation, which is associated with tumor microenvironment formation via fibroblast activation in radiation-related tumors. MATERIALS AND METHODS O2 concentrations were controlled at <5% (internal environmental oxygen condition) or anoxic levels during culture of normal human diploid lung fibroblasts TIG-3 and MRC-5. Protein expression associated with the response of mitochondria to radiation was assessed using immunostaining or western blotting. RESULTS Induction of DNA damage (marker: γ-H2A histone family member X) and mitochondrial signaling (AMP-activated protein kinase), suppression of mitochondrial metabolic activity, and generation of reactive oxygen species occurred with radiation in cells cultured under 5% and 20% O2 conditions. However, reducing O2 concentration mitigated the effects of radiation on cell growth, mitochondrial damage (parkin), induction of antioxidant responses (nuclear factor E2-related factor 2), and fibroblast activation (α-smooth muscle actin). Radiation did not affect the markers used in this study in the absence of O2. CONCLUSION O2 concentration affected the response of mitochondria to radiation and reactive oxygen species-mediated fibroblast activation. Higher O2 concentrations enhanced the effects of radiation on mitochondria in human fibroblasts. In vitro studies may overestimate in vivo radiation effects due to high O2 concentrations.
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Affiliation(s)
- Tsutomu Shimura
- Department of Environmental Health, National Institute of Public Health Wako, Saitama, Japan
| | - Rina Totani
- Meiji Pharmaceutical University, Kiyose, Tokyo, Japan
| | | | - Keiki Inomata
- Meiji Pharmaceutical University, Kiyose, Tokyo, Japan
| | - Megumi Sasatani
- Department of Experimental Oncology; Research Center for Radiation Genome Medicine; Research Institute for Radiation Biology and Medicine (RIRBM), Hiroshima University, Hiroshima, Japan
| | - Kenji Kamiya
- Department of Experimental Oncology; Research Center for Radiation Genome Medicine; Research Institute for Radiation Biology and Medicine (RIRBM), Hiroshima University, Hiroshima, Japan
| | - Akira Ushiyama
- Department of Environmental Health, National Institute of Public Health Wako, Saitama, Japan
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21
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Hayflick SJ, Jeong SY, Sibon OCM. PKAN pathogenesis and treatment. Mol Genet Metab 2022; 137:283-291. [PMID: 36240582 PMCID: PMC9970616 DOI: 10.1016/j.ymgme.2022.09.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 09/28/2022] [Accepted: 09/30/2022] [Indexed: 11/30/2022]
Abstract
Studies aimed at supporting different treatment approaches for pantothenate kinase-associated neurodegeneration (PKAN) have revealed the complexity of coenzyme A (CoA) metabolism and the limits of our current knowledge about disease pathogenesis. Here we offer a foundation for critically evaluating the myriad approaches, argue for the importance of unbiased disease models, and highlight some of the outstanding questions that are central to our understanding and treating PKAN.
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Affiliation(s)
- Susan J Hayflick
- Departments of Molecular & Medical Genetics, Pediatrics, and Neurology, Oregon Health & Science University, Portland, OR 97239, USA.
| | - Suh Young Jeong
- Department of Molecular & Medical Genetics, Oregon Health & Science University, Portland, OR 97239, USA
| | - Ody C M Sibon
- Department of Biomedical Sciences of Cells and Systems, University Medical Center Groningen, University of Groningen, 9713 AV, the Netherlands
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22
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Redrado M, Miñana M, Coogan MP, Concepción Gimeno M, Fernández‐Moreira V. Tunable Emissive Ir(III) Benzimidazole-quinoline Hybrids as Promising Theranostic Lead Compounds. ChemMedChem 2022; 17:e202200244. [PMID: 35767349 PMCID: PMC9796238 DOI: 10.1002/cmdc.202200244] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 06/28/2022] [Indexed: 01/01/2023]
Abstract
Bioactive and luminescent cyclometallated Ir(III) complexes [Ir(ppy)2 L1]Cl (1) and [Ir(ppy)2 L2]Cl (2) containing a benzimidazole derivative (L1/L2) as auxiliary mimic of a nucleotide have been synthesised. The emissive properties of both complexes are conditioned by the nature of L1 and L2, rendering an orange and a green emitter respectively. Both are highly emissive with quantum yield increasing in absence of oxygen up to 0.26 (1) and 0.36 (2), suggesting their phosphorescent character. Antiproliferative activity against lung cancer A549 cells increased up to 15 times upon irradiation conditions, reaching IC50 values in the nanomolar range (0.3±0.09 μM (1) and 0.26±0.14 μM (2)) and pointing them as good PSs candidates for photodynamic therapy via 1 O2 generation. Cellular biodistribution analysis by fluorescence microscopy suggest the lysosomes as the preferential accumulation organelle. Time-resolved studies showed a greatly increased cellular emission lifetime compared to the solution values, indicating binding to macromolecules or cellular structures and restriction of collision and vibrational quenching.
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Affiliation(s)
- Marta Redrado
- Departamento de Química InorgánicaInstituto de Síntesis Química y Catálisis Homogénea (ISQCH)CSIC-Universidad de ZaragozaPedro Cerbuna 1250009ZaragozaSpain
| | - Miriam Miñana
- Departamento de Química InorgánicaInstituto de Síntesis Química y Catálisis Homogénea (ISQCH)CSIC-Universidad de ZaragozaPedro Cerbuna 1250009ZaragozaSpain
| | | | - M. Concepción Gimeno
- Departamento de Química InorgánicaInstituto de Síntesis Química y Catálisis Homogénea (ISQCH)CSIC-Universidad de ZaragozaPedro Cerbuna 1250009ZaragozaSpain
| | - Vanesa Fernández‐Moreira
- Departamento de Química InorgánicaInstituto de Síntesis Química y Catálisis Homogénea (ISQCH)CSIC-Universidad de ZaragozaPedro Cerbuna 1250009ZaragozaSpain
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23
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Marhuenda E, Villarino A, Narciso M, Elowsson L, Almendros I, Westergren-Thorsson G, Farré R, Gavara N, Otero J. Development of a physiomimetic model of acute respiratory distress syndrome by using ECM hydrogels and organ-on-a-chip devices. Front Pharmacol 2022; 13:945134. [PMID: 36188621 PMCID: PMC9517737 DOI: 10.3389/fphar.2022.945134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 08/08/2022] [Indexed: 11/13/2022] Open
Abstract
Acute Respiratory Distress Syndrome is one of the more common fatal complications in COVID-19, characterized by a highly aberrant inflammatory response. Pre-clinical models to study the effect of cell therapy and anti-inflammatory treatments have not comprehensively reproduced the disease due to its high complexity. This work presents a novel physiomimetic in vitro model for Acute Respiratory Distress Syndrome using lung extracellular matrix-derived hydrogels and organ-on-a-chip devices. Monolayres of primary alveolar epithelial cells were cultured on top of decellullarized lung hydrogels containing primary lung mesenchymal stromal cells. Then, cyclic stretch was applied to mimic breathing, and an inflammatory response was induced by using a bacteriotoxin hit. Having simulated the inflamed breathing lung environment, we assessed the effect of an anti-inflammatory drug (i.e., dexamethasone) by studying the secretion of the most relevant inflammatory cytokines. To better identify key players in our model, the impact of the individual factors (cyclic stretch, decellularized lung hydrogel scaffold, and the presence of mesenchymal stromal cells) was studied separately. Results showed that developed model presented a more reduced inflammatory response than traditional models, which is in line with what is expected from the response commonly observed in patients. Further, from the individual analysis of the different stimuli, it was observed that the use of extracellular matrix hydrogels obtained from decellularized lungs had the most significant impact on the change of the inflammatory response. The developed model then opens the door for further in vitro studies with a better-adjusted response to the inflammatory hit and more robust results in the test of different drugs or cell therapy.
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Affiliation(s)
- Esther Marhuenda
- Unitat de Biofísica i Bioenginyeria, Facultat de Medicina i Ciències de la Salut, University de Barcelona, Barcelona, Spain
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain
| | - Alvaro Villarino
- Unitat de Biofísica i Bioenginyeria, Facultat de Medicina i Ciències de la Salut, University de Barcelona, Barcelona, Spain
| | - Maria Narciso
- Unitat de Biofísica i Bioenginyeria, Facultat de Medicina i Ciències de la Salut, University de Barcelona, Barcelona, Spain
- The Institute for Bioengineering of Catalonia, The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Linda Elowsson
- Lung Biology, Biomedical Center, Department of Medical Science,Lund University, Lund, Sweden
| | - Isaac Almendros
- Unitat de Biofísica i Bioenginyeria, Facultat de Medicina i Ciències de la Salut, University de Barcelona, Barcelona, Spain
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain
- Institut d’Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
| | | | - Ramon Farré
- Unitat de Biofísica i Bioenginyeria, Facultat de Medicina i Ciències de la Salut, University de Barcelona, Barcelona, Spain
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain
- Institut d’Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
| | - Núria Gavara
- Unitat de Biofísica i Bioenginyeria, Facultat de Medicina i Ciències de la Salut, University de Barcelona, Barcelona, Spain
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain
- The Institute for Bioengineering of Catalonia, The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Jorge Otero
- Unitat de Biofísica i Bioenginyeria, Facultat de Medicina i Ciències de la Salut, University de Barcelona, Barcelona, Spain
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain
- The Institute for Bioengineering of Catalonia, The Barcelona Institute of Science and Technology, Barcelona, Spain
- *Correspondence: Jorge Otero,
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24
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Aktories P, Petry P, Glatz P, Andrieux G, Oschwald A, Botterer H, Gorka O, Erny D, Boerries M, Henneke P, Groß O, Prinz M, Kierdorf K. An improved organotypic cell culture system to study tissue-resident macrophages ex vivo. CELL REPORTS METHODS 2022; 2:100260. [PMID: 36046625 PMCID: PMC9421540 DOI: 10.1016/j.crmeth.2022.100260] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 02/11/2022] [Accepted: 07/06/2022] [Indexed: 12/02/2022]
Abstract
Tissue-resident macrophages (TRMs) perform organ-specific functions that are dependent on factors such as hematopoietic origin, local environment, and biological influences. A diverse range of in vitro culture systems have been developed to decipher TRM functions, including bone marrow-derived macrophages (BMDMs), induced pluripotent stem cell (iPSC)-derived TRMs, or immortalized cell lines. However, despite the usefulness of such systems, there are notable limitations. Attempts to culture primary macrophages often require purification of cells and lack a high cell yield and consistent phenotype. Here, we aimed to address these limitations by establishing an organotypic primary cell culture protocol. We obtained long-term monocultures of macrophages derived from distinct organs without prior purification using specific growth factors and tissue normoxic conditions that largely conserved a TRM-like identity in vitro. Thus, this organotypic system offers an ideal screening platform for primary macrophages from different organs that can be used for a wide range of assays and readouts.
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Affiliation(s)
- Philipp Aktories
- Institute of Neuropathology, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany
- Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany
| | - Philippe Petry
- Institute of Neuropathology, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany
- Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany
| | - Paulo Glatz
- Institute of Neuropathology, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany
- Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany
| | - Geoffroy Andrieux
- Institute of Medical Bioinformatics and Systems Medicine, Medical Center, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany
| | - Alexander Oschwald
- Institute of Neuropathology, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany
- Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany
| | - Hannah Botterer
- Institute of Neuropathology, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany
- Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany
| | - Oliver Gorka
- Institute of Neuropathology, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany
| | - Daniel Erny
- Institute of Neuropathology, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany
- Berta-Ottenstein-Program for Advanced Clinician Scientists, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany
| | - Melanie Boerries
- Institute of Medical Bioinformatics and Systems Medicine, Medical Center, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany
- German Cancer Consortium (DKTK), Partner Site Freiburg, and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Philipp Henneke
- CIBSS-Center for Integrative Biological Signaling Studies, University of Freiburg, 79104 Freiburg, Germany
- Institute for Immunodeficiency, Center for Chronic Immunodeficiency, and Center for Pediatrics and Adolescent Medicine, Medical Center, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany
| | - Olaf Groß
- Institute of Neuropathology, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany
- Center for Basics in NeuroModulation (NeuroModulBasics), Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany
- Signaling Research Centers BIOSS and CIBSS, University of Freiburg, 79104 Freiburg, Germany
| | - Marco Prinz
- Institute of Neuropathology, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany
- Center for Basics in NeuroModulation (NeuroModulBasics), Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany
- Signaling Research Centers BIOSS and CIBSS, University of Freiburg, 79104 Freiburg, Germany
| | - Katrin Kierdorf
- Institute of Neuropathology, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany
- CIBSS-Center for Integrative Biological Signaling Studies, University of Freiburg, 79104 Freiburg, Germany
- Center for Basics in NeuroModulation (NeuroModulBasics), Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany
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25
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Hypoxia mimetics restore bone biomineralisation in hyperglycaemic environments. Sci Rep 2022; 12:13944. [PMID: 35977987 PMCID: PMC9385857 DOI: 10.1038/s41598-022-18067-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 08/04/2022] [Indexed: 11/08/2022] Open
Abstract
Diabetic patients have an increased risk of fracture and an increased occurrence of impaired fracture healing. Diabetic and hyperglycaemic conditions have been shown to impair the cellular response to hypoxia, via an inhibited hypoxia inducible factor (HIF)-1α pathway. We investigated, using an in vitro hyperglycaemia bone tissue engineering model (and a multidisciplinary bone characterisation approach), the differing effects of glucose levels, hypoxia and chemicals known to stabilise HIF-1α (CoCl2 and DMOG) on bone formation. Hypoxia (1% O2) inhibited bone nodule formation and resulted in discrete biomineralisation as opposed to the mineralised extracellular collagen fibres found in normoxia (20% O2). Unlike hypoxia, the use of hypoxia mimetics did not prevent nodule formation in normal glucose level. Hyperglycaemic conditions (25 mM and 50 mM glucose) inhibited biomineralisation. Interestingly, both hypoxia mimetics (CoCl2 and DMOG) partly restored hyperglycaemia inhibited bone nodule formation. These results highlight the difference in osteoblast responses between hypoxia mimetics and actual hypoxia and suggests a role of HIF-1α stabilisation in bone biomineralisation that extends that of promoting neovascularisation, or other system effects associated with hypoxia and bone regeneration in vivo. This study demonstrates that targeting the HIF pathway may represent a promising strategy for bone regeneration in diabetic patients.
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26
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Lismont C, Revenco I, Li H, Costa CF, Lenaerts L, Hussein MAF, De Bie J, Knoops B, Van Veldhoven PP, Derua R, Fransen M. Peroxisome-Derived Hydrogen Peroxide Modulates the Sulfenylation Profiles of Key Redox Signaling Proteins in Flp-In T-REx 293 Cells. Front Cell Dev Biol 2022; 10:888873. [PMID: 35557958 PMCID: PMC9086853 DOI: 10.3389/fcell.2022.888873] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 03/31/2022] [Indexed: 12/12/2022] Open
Abstract
The involvement of peroxisomes in cellular hydrogen peroxide (H2O2) metabolism has been a central theme since their first biochemical characterization by Christian de Duve in 1965. While the role of H2O2 substantially changed from an exclusively toxic molecule to a signaling messenger, the regulatory role of peroxisomes in these signaling events is still largely underappreciated. This is mainly because the number of known protein targets of peroxisome-derived H2O2 is rather limited and testing of specific targets is predominantly based on knowledge previously gathered in related fields of research. To gain a broader and more systematic insight into the role of peroxisomes in redox signaling, new approaches are urgently needed. In this study, we have combined a previously developed Flp-In T-REx 293 cell system in which peroxisomal H2O2 production can be modulated with a yeast AP-1-like-based sulfenome mining strategy to inventory protein thiol targets of peroxisome-derived H2O2 in different subcellular compartments. By using this approach, we identified more than 400 targets of peroxisome-derived H2O2 in peroxisomes, the cytosol, and mitochondria. We also observed that the sulfenylation kinetics profiles of key targets belonging to different protein families (e.g., peroxiredoxins, annexins, and tubulins) can vary considerably. In addition, we obtained compelling but indirect evidence that peroxisome-derived H2O2 may oxidize at least some of its targets (e.g., transcription factors) through a redox relay mechanism. In conclusion, given that sulfenic acids function as key intermediates in H2O2 signaling, the findings presented in this study provide valuable insight into how peroxisomes may be integrated into the cellular H2O2 signaling network.
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Affiliation(s)
- Celien Lismont
- Laboratory of Peroxisome Biology and Intracellular Communication, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Iulia Revenco
- Laboratory of Peroxisome Biology and Intracellular Communication, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Hongli Li
- Laboratory of Peroxisome Biology and Intracellular Communication, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Cláudio F Costa
- Laboratory of Peroxisome Biology and Intracellular Communication, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Lisa Lenaerts
- Laboratory of Protein Phosphorylation and Proteomics, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Mohamed A F Hussein
- Laboratory of Peroxisome Biology and Intracellular Communication, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Jonas De Bie
- Laboratory of Peroxisome Biology and Intracellular Communication, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Bernard Knoops
- Group of Animal Molecular and Cellular Biology, Institute of Biomolecular Science and Technology (LIBST), Université Catholique de Louvain, Louvain-la-Neuve, Belgium
| | - Paul P Van Veldhoven
- Laboratory of Peroxisome Biology and Intracellular Communication, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Rita Derua
- Laboratory of Protein Phosphorylation and Proteomics, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium.,SyBioMa, KU Leuven, Leuven, Belgium
| | - Marc Fransen
- Laboratory of Peroxisome Biology and Intracellular Communication, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
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27
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Dimethyloxalylglycine (DMOG), a Hypoxia Mimetic Agent, Does Not Replicate a Rat Pheochromocytoma (PC12) Cell Biological Response to Reduced Oxygen Culture. Biomolecules 2022; 12:biom12040541. [PMID: 35454130 PMCID: PMC9027160 DOI: 10.3390/biom12040541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 03/25/2022] [Accepted: 03/30/2022] [Indexed: 02/01/2023] Open
Abstract
Cells respond to reduced oxygen availability predominately by activation of the hypoxia-inducible factor (HIF) pathway. HIF activation upregulates hundreds of genes that help cells survive in the reduced oxygen environment. The aim of this study is to determine whether chemical-induced HIF accumulation mimics all aspects of the hypoxic response of cells. We compared the effects of dimethyloxalylglycine (DMOG) (a HIF stabiliser) on PC12 cells cultured in air oxygen (20.9% O2, AO) with those cultured in either intermittent 20.9% O2 to 2% O2 (IH) or constant 2% O2 (CN). Cell viability, cell cycle, HIF accumulation, reactive oxygen species (ROS) formation, mitochondrial function and differentiation were used to characterise the PC12 cells and evaluate the impact of DMOG. IH and CN culture reduced the increase in cell numbers after 72 and 96 h and MTT activity after 48 h compared to AO culture. Further, DMOG supplementation in AO induced a dose-dependent reduction in the increase in PC12 cell numbers and MTT activity. IH-cultured PC12 cells displayed increased and sustained HIF-1 expression over 96 h. This was accompanied by increased ROS and mitochondrial burden. PC12 cells in CN displayed little changes in HIF-1 expression or ROS levels. DMOG (0.1 mM) supplementation resulted in an IH-like HIF-1 profile. The mitochondrial burden and action potential of DMOG-supplemented PC12 cells did not mirror those seen in other conditions. DMOG significantly increased S phase cell populations after 72 and 96 h. No significant effect on PC12 cell differentiation was noted with IH and CN culture without induction by nerve growth factor (NGF), while DMOG significantly increased PC12 cell differentiation with and without NGF. In conclusion, DMOG and reduced oxygen levels stabilise HIF and affect mitochondrial activity and cell behaviour. However, DMOG does not provide an accurate replication of the reduced oxygen environments.
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28
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Yazdani M. Uncontrolled Oxygen Levels in Cultures of Retinal Pigment Epithelium: Have We Missed the Obvious? Curr Eye Res 2022; 47:651-660. [PMID: 35243933 DOI: 10.1080/02713683.2022.2050264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Retinal pigment epithelium (RPE) is the outermost layer of retina located between the photoreceptor cells and the choroid. This highly-polarized monolayer provides critical support for the functioning of the other parts of the retina, especially photoreceptors. Methods of culturing RPE have been under development since its establishment in 1920s. Despite considering various factors, oxygen (O2) levels in RPE microenvironments during culture preparation and experimental procedure have been overlooked. O2 is a crucial parameter in the cultures, and therefore, maintaining RPE cells at O2 levels different from their native environment (70-90 mm Hg of O2) could have unintended consequences. Owing to the importance of the topic, lack of sufficient discussion in the literature and to encourage future research, this paper will focus on uncontrolled O2 level in cultures of RPE cells.
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Affiliation(s)
- Mazyar Yazdani
- Department of Medical Biochemistry, Oslo University Hospital, Rikshospitalet, 0027 Oslo, Norway
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29
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Patel SP, Calle Gonzalez B, Paone N, Mueller C, Floss JC, Sousa ME, Shi MY. Effect of Physiological Oxygen on Primary Human Corneal Endothelial Cell Cultures. Transl Vis Sci Technol 2022; 11:33. [PMID: 35191961 PMCID: PMC8883143 DOI: 10.1167/tvst.11.2.33] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Purpose Primary human corneal endothelial cells (HCEnCs) cultured in room air are exposed to significantly higher O2 concentrations [O2] than what is normally present in the eye. We evaluated the growth and metabolism of HCEnCs cultured under physiological [O2] (2.5%; [O2]2.5) and room air ([O2]A). Methods Primary cultures of HCEnCs from normal donors and donors with Fuchs dystrophy were grown at [O2]2.5 and [O2]A. Growth and morphology were compared using phase-contrast microscopy, zonula occludens (ZO-1) localization, cell density measurements, and senescence marker staining. CD44 (cell quality) and HIF-1α (hypoxia-inducible factor-1α) levels were evaluated by Western blotting. Cell adaptability to a reversal of [O2] growth conditions was measured with cell viability assays, and cell metabolism was assessed via oxygen consumption and extracellular acidification rates. Results HCEnCs grown at [O2]A and [O2]2.5 displayed similar morphologies, ZO-1 localization, CD44 expression, and senescence. Cells from donors with Fuchs dystrophy grew better at [O2]2.5 than at [O2]A. HIF-1α was undetectable. Cells displayed greater viability at [O2]2.5 than at [O2]A. HCEnCs showed significantly greater proton leak (P < 0.01), nonmitochondrial oxygen consumption (P < 0.01), and spare capacity (P < 0.05) for oxygen consumption rates, and greater basal glycolysis (P < 0.05) with a decreased glycolytic reserve capacity (P < 0.05) for extracellular acidification rates. Conclusions Primary HCEnCs show unique metabolic characteristics at physiologic [O2]. The effect of [O2] for optimization of HCEnC culture conditions should be considered. Translational Relevance With the advance of cell-based therapeutics for corneal endothelial diseases, [O2] should be considered an important variable in the optimization of HCEnC culture conditions.
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Affiliation(s)
- Sangita P Patel
- Ross Eye Institute, Department of Ophthalmology, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, New York, USA.,Research Service, Veterans Administration of Western New York Healthcare System, Buffalo, New York, USA.,Ophthalmology Service, Veterans Administration of Western New York Healthcare System, Buffalo, New York, USA
| | - Brayan Calle Gonzalez
- Ross Eye Institute, Department of Ophthalmology, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, New York, USA.,Research Service, Veterans Administration of Western New York Healthcare System, Buffalo, New York, USA
| | - Nataliia Paone
- Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, New York, USA
| | - Christian Mueller
- Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, New York, USA
| | - Jamie C Floss
- Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, New York, USA
| | - Maria E Sousa
- Ross Eye Institute, Department of Ophthalmology, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, New York, USA.,Research Service, Veterans Administration of Western New York Healthcare System, Buffalo, New York, USA
| | - Michael Y Shi
- Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, New York, USA
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Martens A, de Buhr N, Ishikawa H, Schroten H, von Köckritz-Blickwede M. Characterization of Oxygen Levels in an Uninfected and Infected Human Blood-Cerebrospinal-Fluid-Barrier Model. Cells 2022; 11:cells11010151. [PMID: 35011713 PMCID: PMC8750020 DOI: 10.3390/cells11010151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 12/23/2021] [Accepted: 12/30/2021] [Indexed: 02/07/2023] Open
Abstract
The host–pathogen interaction during meningitis can be investigated with blood-cerebrospinal-fluid-barrier (BCSFB) cell culture models. They are commonly handled under atmospheric oxygen conditions (19–21% O2), although the physiological oxygen conditions are significantly lower in cerebrospinal fluid (CSF) (7–8% O2). We aimed to characterize oxygen levels in a Streptococcus (S.) suis-infected BCSFB model with transmigrating neutrophils. A BCSFB model with human choroid plexus epithelial cells growing on transwell-filters was used. The upper “blood”-compartment was infected and blood-derived neutrophils were added. S. suis and neutrophils transmigrated through the BCSFB into the “CSF”-compartment. Here, oxygen and pH values were determined with the non-invasive SensorDish® reader. Slight orbital shaking improved the luminescence-based measurement technique for detecting free oxygen. In the non-infected BCSFB model, an oxygen value of 7% O2 was determined. However, with S. suis and transmigrating neutrophils, the oxygen value significantly decreased to 2% O2. The pH level decreased slightly in all groups. In conclusion, we characterized oxygen levels in the BCSFB model and demonstrated the oxygen consumption by cells and bacteria. Oxygen values in the non-infected BCSFB model are comparable to in vivo values determined in pigs in the CSF. Infection and transmigrating neutrophils decrease the oxygen value to lower values.
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Affiliation(s)
- Alexander Martens
- Department of Biochemistry, University of Veterinary Medicine Hannover, 30559 Hannover, Germany;
- Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Hannover, 30559 Hannover, Germany
| | - Nicole de Buhr
- Department of Biochemistry, University of Veterinary Medicine Hannover, 30559 Hannover, Germany;
- Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Hannover, 30559 Hannover, Germany
- Correspondence: (N.d.B.); (M.v.K.-B.); Tel.: +49-511-953-6119 (N.d.B.)
| | - Hiroshi Ishikawa
- Laboratory of Clinical Regenerative Medicine, Department of Neurosurgery, University of Tsukuba, Tsukuba-City, Inaraki 305-8575, Japan;
| | - Horst Schroten
- Department of Pediatrics, Pediatric Infectious Diseases, Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany;
| | - Maren von Köckritz-Blickwede
- Department of Biochemistry, University of Veterinary Medicine Hannover, 30559 Hannover, Germany;
- Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Hannover, 30559 Hannover, Germany
- Correspondence: (N.d.B.); (M.v.K.-B.); Tel.: +49-511-953-6119 (N.d.B.)
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Trzeciak A, Wang YT, Perry JSA. First we eat, then we do everything else: The dynamic metabolic regulation of efferocytosis. Cell Metab 2021; 33:2126-2141. [PMID: 34433074 PMCID: PMC8568659 DOI: 10.1016/j.cmet.2021.08.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 06/07/2021] [Accepted: 08/02/2021] [Indexed: 12/13/2022]
Abstract
Clearance of apoptotic cells, or "efferocytosis," is essential for diverse processes including embryonic development, tissue turnover, organ regeneration, and immune cell development. The human body is estimated to remove approximately 1% of its body mass via apoptotic cell clearance daily. This poses several intriguing cell metabolism problems. For instance, phagocytes such as macrophages must induce or suppress metabolic pathways to find, engulf, and digest apoptotic cells. Then, phagocytes must manage the potentially burdensome biomass of the engulfed apoptotic cell. Finally, phagocytes reside in complex tissue architectures that vary in nutrient availability, the types of dying cells or debris that require clearance, and the neighboring cells they interact with. Here, we review advances in our understanding of these three key areas of phagocyte metabolism. We end by proposing a model of efferocytosis that integrates recent findings and establishes a new paradigm for testing how efferocytosis prevents chronic inflammatory disease and autoimmunity.
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Affiliation(s)
- Alissa Trzeciak
- Immunology Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA
| | - Ya-Ting Wang
- Immunology Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA
| | - Justin Shaun Arnold Perry
- Immunology Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA; Louis V. Gerstner Jr. Graduate School of Biomedical Sciences, Memorial Sloan Kettering Cancer Center, 417 E 68th Street, New York, NY 10065, USA; Department of Immunology and Microbial Pathogenesis, Weill Cornell Medical College, 417 E 68th Street, New York, NY 10065, USA.
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Hepatic interferon regulatory factor 8 expression mediates liver ischemia/reperfusion injury in mice. Biochem Pharmacol 2021; 192:114728. [PMID: 34400126 DOI: 10.1016/j.bcp.2021.114728] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Revised: 08/07/2021] [Accepted: 08/10/2021] [Indexed: 02/06/2023]
Abstract
Hepatic ischemia/reperfusion (I/R) injury is an inevitable complication of hepatic surgery occasioned by liver transplantation and resection. The progression from liver ischemia to reperfusion injury is accompanied by abnormal metabolism, Kupffer cell activation, neutrophil recruitment and the release of cytokines. Activation of several interferon regulatory factors (IRFs) has been reported to either enhance or restrict I/R progression, but the role of IRF8 in the regulation of I/R injury progression is still unknown. In this study, we explore the IRF8 function in the I/R-mediated liver injury using overexpressed hepatic IRF8 and knockout mice. According to our results, IRF8 knockout mice had significantly lower inflammatory cells infiltration, inflammatory cytokines release and serum aspartate aminotransferase/alanine aminotransferase levels that improved the necrotic injury after I/R, unlike the control mice. Conversely, the overexpression of IRF8 in WT mice markedly aggravated the liver structure damage and its abnormal function. We further showed that IRF8-mediated inflammatory cells infiltration were partly dependent on early autophagy and NF-κΒ signal pathway during I/R. AAV8-IRF8-I/R mice pretreated with autophagy inhibitor hydroxychloroquine and NF-κΒ signal pathway inhibitor secukinumab could drastically reverse the IRF8-mediated increase of neutrophil infiltration and chemokine release at different degrees. This work uncovered a critical role of IRF8 in the modulation of the hepatic microenvironment and as a potential target in the initial treatment of I/R injury.
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The Effect of Oxygen and Micronutrient Composition of Cell Growth Media on Cancer Cell Bioenergetics and Mitochondrial Networks. Biomolecules 2021; 11:biom11081177. [PMID: 34439843 PMCID: PMC8391631 DOI: 10.3390/biom11081177] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/20/2021] [Accepted: 08/05/2021] [Indexed: 01/14/2023] Open
Abstract
Cancer cell culture is routinely performed under superphysiologic O2 levels and in media such as Dulbecco's Modified Eagle Medium (DMEM) with nutrient composition dissimilar to mammalian extracellular fluid. Recently developed cell culture media (e.g., Plasmax, Human Plasma-Like Medium (HPLM)), which are modeled on the metabolite composition of human blood plasma, have been shown to shift key cellular activities in several cancer cell lines. Similar effects have been reported with respect to O2 levels in cell culture. Given these observations, we investigated how media composition and O2 levels affect cellular energy metabolism and mitochondria network structure in MCF7, SaOS2, LNCaP, and Huh7 cells. Cells were cultured in physiologic (5%) or standard (18%) O2 levels, and in physiologic (Plasmax) or standard cell culture media (DMEM). We show that both O2 levels and media composition significantly affect mitochondrial abundance and network structure, concomitantly with changes in cellular bioenergetics. Extracellular acidification rate (ECAR), a proxy for glycolytic activity, was generally higher in cells cultured in DMEM while oxygen consumption rates (OCR) were lower. This effect of media on energy metabolism is an important consideration for the study of cancer drugs that target aspects of energy metabolism, including lactate dehydrogenase activity.
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Xu J, Fan S, Xu L, Maruyama A, Fujitsuka M, Kawai K. Control of Triplet Blinking Using Cyclooctatetraene to Access the Dynamics of Biomolecules at the Single‐Molecule Level. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202101606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jie Xu
- The Institute of Scientific and Industrial Research (SANKEN) Osaka University Mihogaoka 8-1, Ibaraki Osaka 567-0047 Japan
| | - Shuya Fan
- The Institute of Scientific and Industrial Research (SANKEN) Osaka University Mihogaoka 8-1, Ibaraki Osaka 567-0047 Japan
| | - Lei Xu
- The Institute of Scientific and Industrial Research (SANKEN) Osaka University Mihogaoka 8-1, Ibaraki Osaka 567-0047 Japan
| | - Atsushi Maruyama
- Department of Life Science and Technology Tokyo Institute of Technology 4259 B-57 Nagatsuta, Midori-ku Yokohama Kanagawa 226-8501 Japan
| | - Mamoru Fujitsuka
- The Institute of Scientific and Industrial Research (SANKEN) Osaka University Mihogaoka 8-1, Ibaraki Osaka 567-0047 Japan
| | - Kiyohiko Kawai
- The Institute of Scientific and Industrial Research (SANKEN) Osaka University Mihogaoka 8-1, Ibaraki Osaka 567-0047 Japan
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Mikulska-Ruminska K, Anthonymuthu TS, Levkina A, Shrivastava IH, Kapralov AA, Bayır H, Kagan VE, Bahar I. NO ● Represses the Oxygenation of Arachidonoyl PE by 15LOX/PEBP1: Mechanism and Role in Ferroptosis. Int J Mol Sci 2021; 22:ijms22105253. [PMID: 34067535 PMCID: PMC8156958 DOI: 10.3390/ijms22105253] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 05/06/2021] [Accepted: 05/12/2021] [Indexed: 12/18/2022] Open
Abstract
We recently discovered an anti-ferroptotic mechanism inherent to M1 macrophages whereby high levels of NO● suppressed ferroptosis via inhibition of hydroperoxy-eicosatetraenoyl-phosphatidylethanolamine (HpETE-PE) production by 15-lipoxygenase (15LOX) complexed with PE-binding protein 1 (PEBP1). However, the mechanism of NO● interference with 15LOX/PEBP1 activity remained unclear. Here, we use a biochemical model of recombinant 15LOX-2 complexed with PEBP1, LC-MS redox lipidomics, and structure-based modeling and simulations to uncover the mechanism through which NO● suppresses ETE-PE oxidation. Our study reveals that O2 and NO● use the same entry pores and channels connecting to 15LOX-2 catalytic site, resulting in a competition for the catalytic site. We identified residues that direct O2 and NO● to the catalytic site, as well as those stabilizing the esterified ETE-PE phospholipid tail. The functional significance of these residues is supported by in silico saturation mutagenesis. We detected nitrosylated PE species in a biochemical system consisting of 15LOX-2/PEBP1 and NO● donor and in RAW264.7 M2 macrophages treated with ferroptosis-inducer RSL3 in the presence of NO●, in further support of the ability of NO● to diffuse to, and react at, the 15LOX-2 catalytic site. The results provide first insights into the molecular mechanism of repression of the ferroptotic Hp-ETE-PE production by NO●.
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Affiliation(s)
- Karolina Mikulska-Ruminska
- Department of Computational and Systems Biology, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15260, USA;
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University in Toruń, Grudziadzka 5, 87-100 Toruń, Poland
- Correspondence: (K.M.-R.); (V.E.K.); (I.B.)
| | - Tamil S. Anthonymuthu
- Department of Critical Care Medicine, Safar Center for Resuscitation Research, Children’s Neuroscience Institute, Children’s Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA 15260, USA; (T.S.A.); (H.B.)
| | - Anastasia Levkina
- Department of Environmental and Occupational Health and Center for Free Radical and Antioxidant Health, University of Pittsburgh, Pittsburgh, PA 15260, USA; (A.L.); (A.A.K.)
- Institute of Translational Medicine, Pirogov Russian National Research Medical University, Ostrovityanova 1, 117997 Moscow, Russia
| | - Indira H. Shrivastava
- Department of Computational and Systems Biology, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15260, USA;
- Department of Environmental and Occupational Health and Center for Free Radical and Antioxidant Health, University of Pittsburgh, Pittsburgh, PA 15260, USA; (A.L.); (A.A.K.)
| | - Alexandr A. Kapralov
- Department of Environmental and Occupational Health and Center for Free Radical and Antioxidant Health, University of Pittsburgh, Pittsburgh, PA 15260, USA; (A.L.); (A.A.K.)
| | - Hülya Bayır
- Department of Critical Care Medicine, Safar Center for Resuscitation Research, Children’s Neuroscience Institute, Children’s Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA 15260, USA; (T.S.A.); (H.B.)
- Department of Environmental and Occupational Health and Center for Free Radical and Antioxidant Health, University of Pittsburgh, Pittsburgh, PA 15260, USA; (A.L.); (A.A.K.)
| | - Valerian E. Kagan
- Department of Environmental and Occupational Health and Center for Free Radical and Antioxidant Health, University of Pittsburgh, Pittsburgh, PA 15260, USA; (A.L.); (A.A.K.)
- Department of Radiation Oncology, University of Pittsburgh, Pittsburgh, PA 15260, USA
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15260, USA
- Institute of Regenerative Medicine, IM Sechenov Moscow State Medical University, 119048 Moscow, Russia
- Correspondence: (K.M.-R.); (V.E.K.); (I.B.)
| | - Ivet Bahar
- Department of Computational and Systems Biology, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15260, USA;
- Correspondence: (K.M.-R.); (V.E.K.); (I.B.)
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36
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Xu J, Fan S, Xu L, Maruyama A, Fujitsuka M, Kawai K. Control of Triplet Blinking Using Cyclooctatetraene to Access the Dynamics of Biomolecules at the Single‐Molecule Level. Angew Chem Int Ed Engl 2021; 60:12941-12948. [DOI: 10.1002/anie.202101606] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 03/25/2021] [Indexed: 01/04/2023]
Affiliation(s)
- Jie Xu
- The Institute of Scientific and Industrial Research (SANKEN) Osaka University Mihogaoka 8-1, Ibaraki Osaka 567-0047 Japan
| | - Shuya Fan
- The Institute of Scientific and Industrial Research (SANKEN) Osaka University Mihogaoka 8-1, Ibaraki Osaka 567-0047 Japan
| | - Lei Xu
- The Institute of Scientific and Industrial Research (SANKEN) Osaka University Mihogaoka 8-1, Ibaraki Osaka 567-0047 Japan
| | - Atsushi Maruyama
- Department of Life Science and Technology Tokyo Institute of Technology 4259 B-57 Nagatsuta, Midori-ku Yokohama Kanagawa 226-8501 Japan
| | - Mamoru Fujitsuka
- The Institute of Scientific and Industrial Research (SANKEN) Osaka University Mihogaoka 8-1, Ibaraki Osaka 567-0047 Japan
| | - Kiyohiko Kawai
- The Institute of Scientific and Industrial Research (SANKEN) Osaka University Mihogaoka 8-1, Ibaraki Osaka 567-0047 Japan
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Abstract
Significance: Oxidative stress in moderation positively affects homeostasis through signaling, while in excess it is associated with adverse health outcomes. Both activities are generally attributed to reactive oxygen species (ROS); hydrogen peroxide as the signal, and cysteines on regulatory proteins as the target. However, using antioxidants to affect signaling or benefit health has not consistently translated into expected outcomes, or when it does, the mechanism is often unclear. Recent Advances: Reactive sulfur species (RSS) were integral in the origin of life and throughout much of evolution. Sophisticated metabolic pathways that evolved to regulate RSS were easily "tweaked" to deal with ROS due to the remarkable similarities between the two. However, unlike ROS, RSS are stored, recycled, and chemically more versatile. Despite these observations, the relevance and regulatory functions of RSS in extant organisms are generally underappreciated. Critical Issues: A number of factors bias observations in favor of ROS over RSS. Research conducted in room air is hyperoxic to cells, and promotes ROS production and RSS oxidation. Metabolic rates of rodent models greatly exceed those of humans; does this favor ROS? Analytical methods designed to detect ROS also respond to RSS. Do these disguise the contributions of RSS? Future Directions: Resolving the ROS/RSS issue is vital to understand biology in general and human health in particular. Improvements in experimental design and analytical methods are crucial. Perhaps the most important is an appreciation of all the attributes of RSS and keeping an open mind.
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Affiliation(s)
- Kenneth R Olson
- Department of Physiology, Indiana University School of Medicine-South Bend, South Bend, Indiana, USA
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38
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Zomer HD, Reddi PP. Characterization of rodent Sertoli cell primary cultures. Mol Reprod Dev 2020; 87:857-870. [PMID: 32743879 PMCID: PMC7685524 DOI: 10.1002/mrd.23402] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 07/16/2020] [Indexed: 12/25/2022]
Abstract
Sertoli cells play a vital role in spermatogenesis by offering physical and nutritional support to the differentiating male germ cells. They form the blood-testis barrier and secrete growth factors essential for germ cell differentiation. Sertoli cell primary cultures are critical for understanding the regulation of spermatogenesis; however, obtaining pure cultures has been a challenge. Rodent Sertoli cell isolation protocols do not rule out contamination by the interstitial or connective tissue cells. Sertoli cell-specific markers could be helpful, but there is no consensus. Vimentin, the most commonly used marker, is not specific for Sertoli cells since its expression has been reported in peritubular myoid cells, mesenchymal stem cells, fibroblasts, macrophages, and endothelial cells, which contaminate Sertoli cell preparations. Markers based on transcription and growth factors also have limitations. Thus, the impediment to obtaining pure Sertoli cell cultures pertains to both the method of isolation and marker usage. The aim of this review is to discuss improvements to current methods of rodent Sertoli cell primary cultures, assess the properties of prepubertal versus mature Sertoli cell cultures, and propose steps to improve cellular characterization. Potential benefits of using contemporary approaches, including lineage tracing, specific cell ablation, and RNA-seq for obtaining Sertoli-specific transcript markers are discussed. Evaluating the specificity and applicability of these markers at the protein level to characterize Sertoli cells in culture would be critical. This review is expected to positively impact future work using primary cultures of rodent Sertoli cells.
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Affiliation(s)
- Helena D Zomer
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois Urbana Champaign, Urbana, Illinois
| | - Prabhakara P Reddi
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois Urbana Champaign, Urbana, Illinois
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Krokidis MG, D’Errico M, Pascucci B, Parlanti E, Masi A, Ferreri C, Chatgilialoglu C. Oxygen-Dependent Accumulation of Purine DNA Lesions in Cockayne Syndrome Cells. Cells 2020; 9:cells9071671. [PMID: 32664519 PMCID: PMC7407219 DOI: 10.3390/cells9071671] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 07/01/2020] [Accepted: 07/09/2020] [Indexed: 12/11/2022] Open
Abstract
Cockayne Syndrome (CS) is an autosomal recessive neurodegenerative premature aging disorder associated with defects in nucleotide excision repair (NER). Cells from CS patients, with mutations in CSA or CSB genes, present elevated levels of reactive oxygen species (ROS) and are defective in the repair of a variety of oxidatively generated DNA lesions. In this study, six purine lesions were ascertained in wild type (wt) CSA, defective CSA, wtCSB and defective CSB-transformed fibroblasts under different oxygen tensions (hyperoxic 21%, physioxic 5% and hypoxic 1%). In particular, the four 5′,8-cyclopurine (cPu) and the two 8-oxo-purine (8-oxo-Pu) lesions were accurately quantified by LC-MS/MS analysis using isotopomeric internal standards after an enzymatic digestion procedure. cPu levels were found comparable to 8-oxo-Pu in all cases (3–6 lesions/106 nucleotides), slightly increasing on going from hyperoxia to physioxia to hypoxia. Moreover, higher levels of four cPu were observed under hypoxia in both CSA and CSB-defective cells as compared to normal counterparts, along with a significant enhancement of 8-oxo-Pu. These findings revealed that exposure to different oxygen tensions induced oxidative DNA damage in CS cells, repairable by NER or base excision repair (BER) pathways. In NER-defective CS patients, these results support the hypothesis that the clinical neurological features might be connected to the accumulation of cPu. Moreover, the elimination of dysfunctional mitochondria in CS cells is associated with a reduction in the oxidative DNA damage.
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Affiliation(s)
- Marios G. Krokidis
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, Via P. Gobetti 101, 40129 Bologna, Italy; (M.G.K.); (A.M.); (C.F.)
- Institute of Nanoscience and Nanotechnology, N.C.S.R. “Demokritos”, 15310 Agia Paraskevi Attikis, Athens, Greece
| | - Mariarosaria D’Errico
- Department of Environment and Health, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161 Rome, Italy; (M.D.); (B.P.); (E.P.)
| | - Barbara Pascucci
- Department of Environment and Health, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161 Rome, Italy; (M.D.); (B.P.); (E.P.)
- Institute of Crystallography, Consiglio Nazionale delle Ricerche, Monterotondo Stazione, 00015 Rome, Italy
| | - Eleonora Parlanti
- Department of Environment and Health, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161 Rome, Italy; (M.D.); (B.P.); (E.P.)
| | - Annalisa Masi
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, Via P. Gobetti 101, 40129 Bologna, Italy; (M.G.K.); (A.M.); (C.F.)
- Institute of Crystallography, Consiglio Nazionale delle Ricerche, Monterotondo Stazione, 00015 Rome, Italy
| | - Carla Ferreri
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, Via P. Gobetti 101, 40129 Bologna, Italy; (M.G.K.); (A.M.); (C.F.)
| | - Chryssostomos Chatgilialoglu
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, Via P. Gobetti 101, 40129 Bologna, Italy; (M.G.K.); (A.M.); (C.F.)
- Center for Advanced Technologies, Adam Mickiewicz University, 61-614 Poznań, Poland
- Correspondence: ; Tel.: +39-051-639-8309
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Tezgin D, Giardina C, Perdrizet GA, Hightower LE. The effect of hyperbaric oxygen on mitochondrial and glycolytic energy metabolism: the caloristasis concept. Cell Stress Chaperones 2020; 25:667-677. [PMID: 32253741 PMCID: PMC7332662 DOI: 10.1007/s12192-020-01100-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/12/2020] [Indexed: 12/15/2022] Open
Abstract
We present new data on the effects of HBOT on human kidney (HK-2) cell metabolism using a SeaHorse XF Analyzer to evaluate separately the state of mitochondrial and glycolytic energy metabolism. The data are discussed in the context of the concept of cellular caloristasis networks. The information on the changes in cellular energy metabolism stimulated by HBOT presented here provides new insights into the cellular energy state and mitochondrial environment in which sHSPs function. These data will be useful in forming testable hypotheses about the functions of translocated sHSPs in human mitochondria responding to stressors.
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Affiliation(s)
- Didem Tezgin
- Department of Molecular and Cell Biology, University of Connecticut, Storrs, CT, 06269-3125, USA
| | - Charles Giardina
- Department of Molecular and Cell Biology, University of Connecticut, Storrs, CT, 06269-3125, USA
| | - George A Perdrizet
- Department of Surgery, Wound Care and Hyperbaric Medicine, Hartford Health Care and the Hospital of Central Connecticut, New Britain, CT, 06050, USA
| | - Lawrence E Hightower
- Department of Molecular and Cell Biology, University of Connecticut, Storrs, CT, 06269-3125, USA.
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41
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Haram K, Mortensen JH, Myking O, Magann EF, Morrison JC. The Role of Oxidative Stress, Adhesion Molecules and Antioxidants in Preeclampsia. Curr Hypertens Rev 2020; 15:105-112. [PMID: 30663572 DOI: 10.2174/1573402115666190119163942] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 12/19/2018] [Accepted: 01/11/2019] [Indexed: 12/30/2022]
Abstract
Oxidative stress is a consequence of reduction in the antioxidant capacity and excessive production of reactive oxygen and nitrogen species (ROS). Oxidative agents, which are overproduced due to ischemic-reperfusion injury in the placenta, may overwhelm the normal antioxidant activity. This imbalance is a key feature in the pathogenesis of preeclampsia. A decrease in glutathione peroxidase (GPX) activity is associated with the synthesis of vasoconstrictive eicosanoids such as F2-isoprostanes and thromboxane, which are known to be upregulated in preeclampsia. Biochemical markers of lipid peroxidation, such as malondialdehyde and F2-isoprostane in the placenta, are also increased. Adhesion molecules participate in the pathophysiology of preeclampsia by contributing to a reduced invasion by the trophoblast and increased vascular endothelial damage. Superoxide dismutase (SOD), catalase (CAT) and GPX play important roles counteracting oxidative stress. Other antioxidant factors participate in the etiology of preeclampsia. Levels of antioxidants such as Lycopene, Coenzyme 10, as well as some vitamins, are reduced in preeclamptic gestations.
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Affiliation(s)
- Kjell Haram
- Department of Obstetrics and Gynecology, Haukeland University Hospital, Bergen, Norway
| | - Jan Helge Mortensen
- Department of Obstetrics and Gynecology, Haukeland University Hospital, Bergen, Norway.,Department of Public Health and Primary Health Care, University of Bergen, Bergen, Norway
| | - Ole Myking
- Department of Internal Medicine, Section of Endocrinology, Haukeland University Hospital, University of Bergen, Bergen, Norway
| | - Everett F Magann
- Department of Obstetrics and Gynecology, University of Arkansas for Medical Sciences, Little Rock, AR, United States
| | - John C Morrison
- Department of Obstetrics and Gynecology, University of Mississippi Medical Center, Jackson, Mississippi, MS, United States
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Nury T, Doria M, Lizard G, Vejux A. Docosahexaenoic Acid Attenuates Mitochondrial Alterations and Oxidative Stress Leading to Cell Death Induced by Very Long-Chain Fatty Acids in a Mouse Oligodendrocyte Model. Int J Mol Sci 2020; 21:ijms21020641. [PMID: 31963714 PMCID: PMC7014165 DOI: 10.3390/ijms21020641] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 01/06/2020] [Accepted: 01/17/2020] [Indexed: 12/12/2022] Open
Abstract
In the case of neurodegenerative pathologies, the therapeutic arsenal available is often directed towards the consequences of the disease. The purpose of this study is, therefore, to evaluate the ability of docosahexaenoic acid (DHA), a molecule present in certain foods and considered to have health benefits, to inhibit the cytotoxic effects of very long-chain fatty acids (C24:0, C26:0), which can contribute to the development of some neurodegenerative diseases. The effect of DHA (50 µM) on very long-chain fatty acid-induced toxicity was studied by several complementary methods: phase contrast microscopy to evaluate cell viability and morphology, the MTT test to monitor the impact on mitochondrial function, propidium iodide staining to study plasma membrane integrity, and DHE staining to measure oxidative stress. A Western blot assay was used to assess autophagy through modification of LC3 protein. The various experiments were carried out on the cellular model of 158N murine oligodendrocytes. In 158N cells, our data establish that DHA is able to inhibit all tested cytotoxic effects induced by very long-chain fatty acids.
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Affiliation(s)
| | | | | | - Anne Vejux
- Correspondence: ; Tel.: +33-3-80-39-37-01; Fax: +33-3-80-39-62-50
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Yen TY, Stephen ZR, Lin G, Mu Q, Jeon M, Untoro S, Welsh P, Zhang M. Catalase-Functionalized Iron Oxide Nanoparticles Reverse Hypoxia-Induced Chemotherapeutic Resistance. Adv Healthc Mater 2019; 8:e1900826. [PMID: 31557421 PMCID: PMC6919328 DOI: 10.1002/adhm.201900826] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 08/15/2019] [Indexed: 11/10/2022]
Abstract
Intratumoral hypoxia is a major contributor to multiple drug resistance (MDR) in cancer, and can lead to poor prognosis of patients receiving chemotherapy. Development of an MDR-inhibitor that mitigates the hypoxic environment is crucial for cancer management and treatment. Reported is a biocompatible and biodegradable catalase-conjugated iron oxide nanoparticle (Cat-IONP) capable of converting reactive oxygen species to molecular oxygen to supply an oxygen source for the hypoxic tumor microenvironment. Cat-IONP demonstrates initial enzymatic activity comparable to free catalase while providing a nearly threefold increase in long-term enzymatic activity. It is demonstrated that Cat-IONP significantly reduces the in vitro expression of hypoxia-inducible factors at the transcription level in a breast cancer cell line. Co-treatment of Cat-IONP and paclitaxel (PTX) significantly increases the drug sensitivity of hypoxic-cultured cells, demonstrating greater than twofold and fivefold reduction in cell viability in comparison to cells treated only with 80 and 120 × 10-6 m PTX, respectively. These findings demonstrate the ability of Cat-IONP to act as an MDR-inhibitor at different biological levels, suggesting a promising strategy to combat cancer-MDR and to optimize cancer management and treatment outcomes.
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Affiliation(s)
- Tin-Yo Yen
- Department of Material Sciences and Engineering, University of Washington, Seattle, Washington, 98195
| | - Zachary R. Stephen
- Department of Material Sciences and Engineering, University of Washington, Seattle, Washington, 98195
| | - Guanyou Lin
- Department of Material Sciences and Engineering, University of Washington, Seattle, Washington, 98195
| | - Qingxin Mu
- Department of Material Sciences and Engineering, University of Washington, Seattle, Washington, 98195
| | - Mike Jeon
- Department of Material Sciences and Engineering, University of Washington, Seattle, Washington, 98195
| | - Stela Untoro
- Department of Material Sciences and Engineering, University of Washington, Seattle, Washington, 98195
| | - Parker Welsh
- Department of Material Sciences and Engineering, University of Washington, Seattle, Washington, 98195
| | - Miqin Zhang
- Department of Material Sciences and Engineering, University of Washington, Seattle, Washington, 98195
- Department of Neurological Surgery, University of Washington, Seattle Washington 98195
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Stuart JA, Aibueku O, Bagshaw O, Moradi F. Hypoxia inducible factors as mediators of reactive oxygen/nitrogen species homeostasis in physiological normoxia. Med Hypotheses 2019; 129:109249. [DOI: 10.1016/j.mehy.2019.109249] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Revised: 04/15/2019] [Accepted: 05/26/2019] [Indexed: 12/12/2022]
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