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Bagri KM, de Andrade Abraham C, Santos AT, da Silva WS, Costa ML, Mermelstein C. Rotenone inhibits embryonic chick myogenesis in a ROS-dependent mechanism. Tissue Cell 2024; 89:102423. [PMID: 38875923 DOI: 10.1016/j.tice.2024.102423] [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: 02/09/2024] [Revised: 05/20/2024] [Accepted: 05/23/2024] [Indexed: 06/16/2024]
Abstract
Skeletal muscle function is highly dependent on the energy supply provided by mitochondria. Besides ATP production, mitochondria have several other roles, such as calcium storage, heat production, cell death signaling, autophagy regulation and redox state modulation. Mitochondrial function is crucial for skeletal muscle fiber formation. Disorders that affect mitochondria have a major impact in muscle development and function. Here we studied the role of mitochondria during chick skeletal myogenesis. We analyzed the intracellular distribution of mitochondria in myoblasts, fibroblasts and myotubes using Mitotracker labeling. Mitochondrial respiration was investigated in chick muscle cells. Our results show that (i) myoblasts and myotubes have more mitochondria than muscle fibroblasts; (ii) mitochondria are organized in long lines within the whole cytoplasm and around the nuclei of myotubes, while in myoblasts they are dispersed in the cytoplasm; (iii) the area of mitochondria in myotubes increases during myogenesis, while in myoblasts and fibroblasts there is a slight decrease; (iv) mitochondrial length increases in the three cell types (myoblasts, fibroblasts and myotubes) during myogenesis; (v) the distance of mitochondria to the nucleus increases in myoblasts and myotubes during myogenesis; (vi) Rotenone inhibits muscle fiber formation, while FCCP increases the size of myotubes; (vii) N-acetyl cysteine (NAC), an inhibitor of ROS formation, rescues the effects of Rotenone on muscle fiber size; and (viii) Rotenone induces the production of ROS in chick myogenic cells. The collection of our results suggests a role of ROS signaling in mitochondrial function during chick myogenesis.
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Affiliation(s)
- Kayo Moreira Bagri
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | | | - Anderson Teixeira Santos
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Wagner Seixas da Silva
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Manoel Luis Costa
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Claudia Mermelstein
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
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2
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Park S, Park G, Oh S, Park Y, Kim Y, Kim J, Choi J. Investigating proliferation and differentiation capacities of Hanwoo steer myosatellite cells at different passages for developing cell-cultured meat. Sci Rep 2023; 13:15614. [PMID: 37730695 PMCID: PMC10511522 DOI: 10.1038/s41598-023-40800-7] [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: 05/08/2023] [Accepted: 08/16/2023] [Indexed: 09/22/2023] Open
Abstract
The aim of study was to investigate proliferation and differentiation capacities of Hanwoo myosatellite cells for the development of Hanwoo cell cultures. From P1 to P19, the number of live cells decreased and the cell size increased. It was confirmed that the PAX7 mRNA was higher in P3 than P6 and P9 (p < 0.05). The maximum differentiation score was measured from P1 to P12. The maximum differentiation score maintained high from P1 to P10. Immunostaining was performed for both P1 and P10 cells to investigate differentiation characteristics. And there were no significant differences in differentiation characteristics between P1 and P10 cells. MYOG mRNA was low, whereas C-FOS mRNA was high (p < 0.05) in the late passage. Myosin and Tom20 protein also showed low values in the late passage (p < 0.05). In conclusion, our results suggest that it is appropriate to use P1 to P10 for the production of cultured meat using Hanwoo muscle cells. If cell culture meat production is performed without differentiation, the passage range may increase further. These results provide basic essential data required for further development of Hanwoo cell cultures, which could provide a valuable source of protein for human populations in the future.
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Affiliation(s)
- Sanghun Park
- Department of Animal Science, Chungbuk National University, Cheongju, 28644, Korea
| | - Gyutae Park
- Department of Animal Science, Chungbuk National University, Cheongju, 28644, Korea
| | - Sehyuk Oh
- Department of Animal Science, Chungbuk National University, Cheongju, 28644, Korea
| | - Yunhwan Park
- Department of Animal Science, Chungbuk National University, Cheongju, 28644, Korea
| | - Yuna Kim
- Department of Animal Science, Chungbuk National University, Cheongju, 28644, Korea
| | - Jaeyoung Kim
- Department of Animal Science, Chungbuk National University, Cheongju, 28644, Korea
| | - Jungseok Choi
- Department of Animal Science, Chungbuk National University, Cheongju, 28644, Korea.
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3
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Bajia D, Bottani E, Derwich K. Effects of Noonan Syndrome-Germline Mutations on Mitochondria and Energy Metabolism. Cells 2022; 11:cells11193099. [PMID: 36231062 PMCID: PMC9563972 DOI: 10.3390/cells11193099] [Citation(s) in RCA: 5] [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: 08/06/2022] [Revised: 09/21/2022] [Accepted: 09/28/2022] [Indexed: 11/30/2022] Open
Abstract
Noonan syndrome (NS) and related Noonan syndrome with multiple lentigines (NSML) contribute to the pathogenesis of human diseases in the RASopathy family. This family of genetic disorders constitute one of the largest groups of developmental disorders with variable penetrance and severity, associated with distinctive congenital disabilities, including facial features, cardiopathies, growth and skeletal abnormalities, developmental delay/mental retardation, and tumor predisposition. NS was first clinically described decades ago, and several genes have since been identified, providing a molecular foundation to understand their physiopathology and identify targets for therapeutic strategies. These genes encode proteins that participate in, or regulate, RAS/MAPK signalling. The RAS pathway regulates cellular metabolism by controlling mitochondrial homeostasis, dynamics, and energy production; however, little is known about the role of mitochondrial metabolism in NS and NSML. This manuscript comprehensively reviews the most frequently mutated genes responsible for NS and NSML, covering their role in the current knowledge of cellular signalling pathways, and focuses on the pathophysiological outcomes on mitochondria and energy metabolism.
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Affiliation(s)
- Donald Bajia
- Department of Pediatric Oncology, Hematology and Transplantology, Poznan University of Medical Sciences, Ul. Fredry 10, 61701 Poznan, Poland
| | - Emanuela Bottani
- Department of Diagnostics and Public Health, Section of Pharmacology, University of Verona, Piazzale L. A. Scuro 10, 37134 Verona, Italy
- Correspondence: (E.B.); (K.D.); Tel.: +39-3337149584 (E.B.); +48-504199285 (K.D.)
| | - Katarzyna Derwich
- Department of Pediatric Oncology, Hematology and Transplantology, Poznan University of Medical Sciences, Ul. Fredry 10, 61701 Poznan, Poland
- Correspondence: (E.B.); (K.D.); Tel.: +39-3337149584 (E.B.); +48-504199285 (K.D.)
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4
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Romero MA, Mumford PW, Roberson PA, Osburn SC, Parry HA, Kavazis AN, Gladden LB, Schwartz TS, Baker BA, Toedebusch RG, Childs TE, Booth FW, Roberts MD. Five months of voluntary wheel running downregulates skeletal muscle LINE-1 gene expression in rats. Am J Physiol Cell Physiol 2019; 317:C1313-C1323. [PMID: 31618076 DOI: 10.1152/ajpcell.00301.2019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Transposable elements (TEs) are mobile DNA and constitute approximately half of the human genome. LINE-1 (L1) is the only active autonomous TE in the mammalian genome and has been implicated in a number of diseases as well as aging. We have previously reported that skeletal muscle L1 expression is lower following acute and chronic exercise training in humans. Herein, we used a rodent model of voluntary wheel running to determine whether long-term exercise training affects markers of skeletal muscle L1 regulation. Selectively bred high-running female Wistar rats (n = 11 per group) were either given access to a running wheel (EX) or not (SED) at 5 wk of age, and these conditions were maintained until 27 wk of age. Thereafter, mixed gastrocnemius tissue was harvested and analyzed for L1 mRNA expression and DNA content along with other L1 regulation markers. We observed significantly (P < 0.05) lower L1 mRNA expression, higher L1 DNA methylation, and less L1 DNA in accessible chromatin regions in EX versus SED rats. We followed these experiments with 3-h in vitro drug treatments in L6 myotubes to mimic transient exercise-specific signaling events. The AMP-activated protein kinase (AMPK) agonist 5-aminoimidazole-4-carboxamide ribonucleotide (AICAR; 4 mM) significantly decreased L1 mRNA expression in L6 myotubes. However, this effect was not facilitated through increased L1 DNA methylation. Collectively, these data suggest that long-term voluntary wheel running downregulates skeletal muscle L1 mRNA, and this may occur through chromatin modifications. Enhanced AMPK signaling with repetitive exercise bouts may also decrease L1 mRNA expression, although the mechanism of action remains unknown.
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Affiliation(s)
| | | | | | | | - Hailey A Parry
- School of Kinesiology, Auburn University, Auburn, Alabama
| | | | | | - Tonia S Schwartz
- Department of Biological Sciences, Auburn University, Auburn, Alabama
| | - Brent A Baker
- National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Morgantown, West Virginia
| | - Ryan G Toedebusch
- Department of Biomedical Sciences, University of Missouri, Columbia, Missouri
| | - Thomas E Childs
- Department of Biomedical Sciences, University of Missouri, Columbia, Missouri
| | - Frank W Booth
- Department of Biomedical Sciences, University of Missouri, Columbia, Missouri
| | - Michael D Roberts
- School of Kinesiology, Auburn University, Auburn, Alabama.,Edward Via College of Osteopathic Medicine-Auburn Campus, Auburn, Alabama
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5
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Murphy DP, Nicholson T, Jones SW, O'Leary MF. MyoCount: a software tool for the automated quantification of myotube surface area and nuclear fusion index. Wellcome Open Res 2019; 4:6. [PMID: 30906880 PMCID: PMC6419977 DOI: 10.12688/wellcomeopenres.15055.1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/18/2019] [Indexed: 02/02/2023] Open
Abstract
It is often desirable to characterise the morphology of myogenic cultures. To achieve this, the surface area of myotubes is often quantified, along with the nuclear fusion index (NFI). Existing methods of such quantification are time-consuming and subject to error-prone human input. We have developed MyoCount, an open-source program that runs via the freely available MATLAB Runtime and quantifies myotube surface area and NFI. MyoCount allows the user to adjust its parameters to account for differences in image quality, magnification and the colour channels used in generating the image. MyoCount measures of myotube surface area and NFI were compared to the mean of measures performed by two blinded investigators using ImageJ software (surface area R 2 = 0.89, NFI R 2 =0.87). For NFI, the mean coefficient of variation (CV) between two investigators (17.6 ± 2.3%) was significantly higher than that between the investigator mean and MyoCount (13.5 ± 1.4%). For measurements of myotube area, the CV did not differ between both analysis methods. Given these results and the advantages of applying the same image analysis method uniformly across all images in an experiment, we suggest that MyoCount will be a useful research tool and we publish its source code and instructions for its use alongside this article.
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Affiliation(s)
- David P. Murphy
- Department of Clinical and Movement Neurosciences, Institute of Neurology, University College London, London, UK
| | - Thomas Nicholson
- Institute of Inflammation and Ageing, MRC-ARUK Centre for Musculoskeletal Ageing Research, University of Birmingham, UK, Birmingham, UK
| | - Simon W. Jones
- Institute of Inflammation and Ageing, MRC-ARUK Centre for Musculoskeletal Ageing Research, University of Birmingham, UK, Birmingham, UK
| | - Mary F. O'Leary
- Department of Sport and Health Sciences, University of Exeter, Exeter, UK,
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6
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Harris G, Eschment M, Orozco SP, McCaffery JM, Maclennan R, Severin D, Leist M, Kleensang A, Pamies D, Maertens A, Hogberg HT, Freeman D, Kirkwood A, Hartung T, Smirnova L. Toxicity, recovery, and resilience in a 3D dopaminergic neuronal in vitro model exposed to rotenone. Arch Toxicol 2018; 92:2587-2606. [PMID: 29955902 PMCID: PMC6063347 DOI: 10.1007/s00204-018-2250-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2018] [Accepted: 06/20/2018] [Indexed: 02/06/2023]
Abstract
To date, most in vitro toxicity testing has focused on acute effects of compounds at high concentrations. This testing strategy does not reflect real-life exposures, which might contribute to long-term disease outcome. We used a 3D-human dopaminergic in vitro LUHMES cell line model to determine whether effects of short-term rotenone exposure (100 nM, 24 h) are permanent or reversible. A decrease in complex I activity, ATP, mitochondrial diameter, and neurite outgrowth were observed acutely. After compound removal, complex I activity was still inhibited; however, ATP levels were increased, cells were electrically active and aggregates restored neurite outgrowth integrity and mitochondrial morphology. We identified significant transcriptomic changes after 24 h which were not present 7 days after wash-out. Our results suggest that testing short-term exposures in vitro may capture many acute effects which cells can overcome, missing adaptive processes, and long-term mechanisms. In addition, to study cellular resilience, cells were re-exposed to rotenone after wash-out and recovery period. Pre-exposed cells maintained higher metabolic activity than controls and presented a different expression pattern in genes previously shown to be altered by rotenone. NEF2L2, ATF4, and EAAC1 were downregulated upon single hit on day 14, but unchanged in pre-exposed aggregates. DAT and CASP3 were only altered after re-exposure to rotenone, while TYMS and MLF1IP were downregulated in both single-exposed and pre-exposed aggregates. In summary, our study shows that a human cell-based 3D model can be used to assess cellular adaptation, resilience, and long-term mechanisms relevant to neurodegenerative research.
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Affiliation(s)
- Georgina Harris
- Center for Alternatives to Animal Testing (CAAT), Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Melanie Eschment
- Center for Alternatives to Animal Testing (CAAT) Europe, Department of Biology, University of Konstanz, Konstanz, Germany
| | - Sebastian Perez Orozco
- The Integrated Imaging Center, Department of Biology, Engineering in Oncology Center and The Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, USA
| | - J Michael McCaffery
- The Integrated Imaging Center, Department of Biology, Engineering in Oncology Center and The Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, USA
| | | | - Daniel Severin
- The Mind/Brain Institute, Johns Hopkins University, Baltimore, MD, USA
| | - Marcel Leist
- Center for Alternatives to Animal Testing (CAAT) Europe, Department of Biology, University of Konstanz, Konstanz, Germany
| | - Andre Kleensang
- Center for Alternatives to Animal Testing (CAAT), Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - David Pamies
- Center for Alternatives to Animal Testing (CAAT), Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Alexandra Maertens
- Center for Alternatives to Animal Testing (CAAT), Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Helena T Hogberg
- Center for Alternatives to Animal Testing (CAAT), Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Dana Freeman
- Department of Environmental Health and Engineering, Johns Hopkins University, Baltimore, MD, USA
| | - Alfredo Kirkwood
- The Mind/Brain Institute, Johns Hopkins University, Baltimore, MD, USA.,Department of Neuroscience, Johns Hopkins University, Baltimore, MD, USA
| | - Thomas Hartung
- Center for Alternatives to Animal Testing (CAAT), Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.,Center for Alternatives to Animal Testing (CAAT) Europe, Department of Biology, University of Konstanz, Konstanz, Germany
| | - Lena Smirnova
- Center for Alternatives to Animal Testing (CAAT), Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.
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7
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Robke L, Futamura Y, Konstantinidis G, Wilke J, Aono H, Mahmoud Z, Watanabe N, Wu YW, Osada H, Laraia L, Waldmann H. Discovery of the novel autophagy inhibitor aumitin that targets mitochondrial complex I. Chem Sci 2018; 9:3014-3022. [PMID: 29732085 PMCID: PMC5916016 DOI: 10.1039/c7sc05040b] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Accepted: 02/20/2018] [Indexed: 12/14/2022] Open
Abstract
Macroautophagy is a conserved eukaryotic process for degradation of cellular components in response to lack of nutrients. It is involved in the development of diseases, notably cancer and neurological disorders including Parkinson's disease. Small molecule autophagy modulators have proven to be valuable tools to dissect and interrogate this crucial metabolic pathway and are in high demand. Phenotypic screening for autophagy inhibitors led to the discovery of the novel autophagy inhibitor aumitin. Target identification and confirmation revealed that aumitin inhibits mitochondrial respiration by targeting complex I. We show that inhibition of autophagy by impairment of mitochondrial respiration is general for several mitochondrial inhibitors that target different mitochondrial complexes. Our findings highlight the importance of mitochondrial respiration for autophagy regulation.
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Affiliation(s)
- Lucas Robke
- Max-Planck-Institute of Molecular Physiology , Department of Chemical Biology , Otto-Hahn-Str. 11 , 44227 Dortmund , Germany
- Faculty of Chemistry and Chemical Biology , TU Dortmund University , Otto-Hahn-Str. 4a , 44227 Dortmund , Germany .
- RIKEN-Max Planck Joint Research Division for Systems Chemical Biology , RIKEN CSRS , 2-1, Hirosawa, Wako , Saitama 351-0198 , Japan
| | - Yushi Futamura
- Chemical Biology Research Group , RIKEN CSRS , 2-1, Hirosawa, Wako , Saitama 351-0198 , Japan
| | - Georgios Konstantinidis
- Chemical Genomics Centre of the Max-Planck-Society , Otto-Hahn-Str. 15 , 44227 Dortmund , Germany
| | - Julian Wilke
- Max-Planck-Institute of Molecular Physiology , Department of Chemical Biology , Otto-Hahn-Str. 11 , 44227 Dortmund , Germany
- Faculty of Chemistry and Chemical Biology , TU Dortmund University , Otto-Hahn-Str. 4a , 44227 Dortmund , Germany .
| | - Harumi Aono
- Chemical Biology Research Group , RIKEN CSRS , 2-1, Hirosawa, Wako , Saitama 351-0198 , Japan
| | - Zhwan Mahmoud
- Faculty of Chemistry and Chemical Biology , TU Dortmund University , Otto-Hahn-Str. 4a , 44227 Dortmund , Germany .
| | - Nobumoto Watanabe
- RIKEN-Max Planck Joint Research Division for Systems Chemical Biology , RIKEN CSRS , 2-1, Hirosawa, Wako , Saitama 351-0198 , Japan
- Bio-Active Compounds Discovery Research Unit , RIKEN CSRS , 2-1, Hirosawa, Wako , Saitama 351-0198 , Japan
| | - Yao-Wen Wu
- Chemical Genomics Centre of the Max-Planck-Society , Otto-Hahn-Str. 15 , 44227 Dortmund , Germany
| | - Hiroyuki Osada
- RIKEN-Max Planck Joint Research Division for Systems Chemical Biology , RIKEN CSRS , 2-1, Hirosawa, Wako , Saitama 351-0198 , Japan
- Chemical Biology Research Group , RIKEN CSRS , 2-1, Hirosawa, Wako , Saitama 351-0198 , Japan
| | - Luca Laraia
- Max-Planck-Institute of Molecular Physiology , Department of Chemical Biology , Otto-Hahn-Str. 11 , 44227 Dortmund , Germany
| | - Herbert Waldmann
- Max-Planck-Institute of Molecular Physiology , Department of Chemical Biology , Otto-Hahn-Str. 11 , 44227 Dortmund , Germany
- Faculty of Chemistry and Chemical Biology , TU Dortmund University , Otto-Hahn-Str. 4a , 44227 Dortmund , Germany .
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8
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JanssenDuijghuijsen LM, Grefte S, de Boer VCJ, Zeper L, van Dartel DAM, van der Stelt I, Bekkenkamp-Grovenstein M, van Norren K, Wichers HJ, Keijer J. Mitochondrial ATP Depletion Disrupts Caco-2 Monolayer Integrity and Internalizes Claudin 7. Front Physiol 2017; 8:794. [PMID: 29075202 PMCID: PMC5641570 DOI: 10.3389/fphys.2017.00794] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 09/28/2017] [Indexed: 01/16/2023] Open
Abstract
Objective:In vivo studies suggest that intestinal barrier integrity is dependent on mitochondrial ATP production. Here, we aim to provide mechanistic support, using an in vitro model mimicking the oxidative in vivo situation. Methods: Human Caco-2 cells were cultured for 10 days in culture flasks or for 14 days on transwell inserts in either glucose-containing or galactose-containing medium. Mitochondria were visualized and cellular respiration and levels of oxidative phosphorylation (OXPHOS) proteins were determined. Mitochondrial ATP depletion was induced using CCCP, rotenone, or piericidin A (PA). Monolayer permeability was assessed using transepithelial electrical resistance (TEER) and fluorescein flux. Gene expression and cellular distribution of tight junction proteins were analyzed. Results: Caco-2 cells cultured in galactose-containing, but not in glucose-containing, medium showed increased mitochondrial connectivity, oxygen consumption rates and levels of OXPHOS proteins. Inhibition of mitochondrial ATP production using CCCP, rotenone or PA resulted in a dose-dependent increase in Caco-2 monolayer permeability. In-depth studies with PA showed a six fold decrease in cellular ATP and revealed increased gene expression of tight junction proteins (TJP) 1 and 2, occludin, and claudin 1, but decreased gene expression of claudin 2 and 7. Of these, claudin 7 was clearly redistributed from the cellular membrane into the cytoplasm, while the others were not (TJP1, occludin) or slightly (claudin 2, actin) affected. In vivo studies suggest that intestinal barrier integrity is dependent on mitochondrial ATP production. Here, we aim to provide mechanistic support, using an in vitro model mimicking the oxidative in vivo situation. Conclusions: Well-functioning mitochondria are essential for maintaining cellular energy status and monolayer integrity of galactose grown Caco-2 cells. Energy depletion-induced Caco-2 monolayer permeability may be facilitated by changes in the distribution of claudin 7.
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Affiliation(s)
- Lonneke M JanssenDuijghuijsen
- Wageningen Food and Biobased Research, Wageningen University and Research, Wageningen, Netherlands.,Human and Animal Physiology, Wageningen University and Research, Wageningen, Netherlands.,Division of Human Nutrition, Wageningen University and Research, Wageningen, Netherlands
| | - Sander Grefte
- Human and Animal Physiology, Wageningen University and Research, Wageningen, Netherlands
| | - Vincent C J de Boer
- Human and Animal Physiology, Wageningen University and Research, Wageningen, Netherlands
| | - Lara Zeper
- Human and Animal Physiology, Wageningen University and Research, Wageningen, Netherlands
| | - Dorien A M van Dartel
- Human and Animal Physiology, Wageningen University and Research, Wageningen, Netherlands
| | - Inge van der Stelt
- Human and Animal Physiology, Wageningen University and Research, Wageningen, Netherlands
| | | | - Klaske van Norren
- Division of Human Nutrition, Wageningen University and Research, Wageningen, Netherlands.,Nutricia Research, Utrecht, Netherlands
| | - Harry J Wichers
- Wageningen Food and Biobased Research, Wageningen University and Research, Wageningen, Netherlands
| | - Jaap Keijer
- Human and Animal Physiology, Wageningen University and Research, Wageningen, Netherlands
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9
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Yang L, Tang L, Dai F, Meng G, Yin R, Xu X, Yao W. Raf-1/CK2 and RhoA/ROCK signaling promote TNF-α-mediated endothelial apoptosis via regulating vimentin cytoskeleton. Toxicology 2017; 389:74-84. [PMID: 28743511 DOI: 10.1016/j.tox.2017.07.010] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Revised: 07/16/2017] [Accepted: 07/18/2017] [Indexed: 01/04/2023]
Abstract
Both RhoA/ROCK and Raf-1/CK2 pathway play essential roles in cell proliferation, apoptosis, differentiation, and multiple other common cellular functions. We previously reported that vimentin is responsible for TNF-α-induced cell apoptosis. Herein, we investigated the regulation of RhoA/ROCK and Raf-1/CK2 signaling on vimentin filaments and endothelial apoptosis mediated by TNF-α. Treatment with TNF-α significantly induced the activation of RhoA and ROCK, and the expression of ROCK1. RhoA deficiency could obviously inhibit ROCK activation and ROCK1 expression induced by TNF-α. Both RhoA deficiency and ROCK activity inhibition (Y-27632) greatly inhibited endothelial apoptosis and preserved cell viability in TNF-α-induced human umbilical vein endothelial cells (HUVECs). Also vimentin phosphorylation and the remodeling of vimentin or phospho-vimentin induced by TNF-α were obviously attenuated by RhoA suppression and ROCK inhibition. TNF-α-mediated vimentin cleavage was significantly inhibited by RhoA suppression and ROCK inhibition through decreasing the activation of caspase3 and 8. Furthermore, TNF-α treatment greatly enhanced the activation of Raf-1. Suppression of Raf-1 or CK2 by its inhibitor (GW5074 or TBB) blocked vimentin phosphorylation, remodeling and endothelial apoptosis, and preserved cell viability in TNF-α-induced HUVECs. However, Raf-1 inhibition showed no significant effect on TNF-α-induced ROCK expression and activation, suggesting that the regulation of Raf-1/CK2 signaling on vimentin was independent of ROCK. Taken together, these results indicate that both RhoA/ROCK and Raf-1/CK2 pathway are responsible for TNF-α-mediated endothelial cytotoxicity via regulating vimentin cytoskeleton.
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Affiliation(s)
- Lifeng Yang
- School of pharmacy, Nantong University, 19 QiXiu Road, Nantong 226001, China
| | - Lian Tang
- School of pharmacy, Nantong University, 19 QiXiu Road, Nantong 226001, China
| | - Fan Dai
- School of pharmacy, Nantong University, 19 QiXiu Road, Nantong 226001, China
| | - Guoliang Meng
- School of pharmacy, Nantong University, 19 QiXiu Road, Nantong 226001, China
| | - Runting Yin
- School of pharmacy, Nantong University, 19 QiXiu Road, Nantong 226001, China
| | - Xiaole Xu
- School of pharmacy, Nantong University, 19 QiXiu Road, Nantong 226001, China
| | - Wenjuan Yao
- School of pharmacy, Nantong University, 19 QiXiu Road, Nantong 226001, China.
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10
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Rekuviene E, Ivanoviene L, Borutaite V, Morkuniene R. Rotenone decreases ischemia-induced injury by inhibiting mitochondrial permeability transition in mature brains. Neurosci Lett 2017; 653:45-50. [DOI: 10.1016/j.neulet.2017.05.028] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 05/09/2017] [Accepted: 05/15/2017] [Indexed: 12/21/2022]
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11
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Liemburg-Apers DC, Wagenaars JAL, Smeitink JAM, Willems PHGM, Koopman WJH. Acute stimulation of glucose influx upon mitoenergetic dysfunction requires LKB1, AMPK, Sirt2 and mTOR-RAPTOR. J Cell Sci 2016; 129:4411-4423. [PMID: 27793977 DOI: 10.1242/jcs.194480] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Accepted: 10/24/2016] [Indexed: 12/20/2022] Open
Abstract
Mitochondria play a central role in cellular energy production, and their dysfunction can trigger a compensatory increase in glycolytic flux to sustain cellular ATP levels. Here, we studied the mechanism of this homeostatic phenomenon in C2C12 myoblasts. Acute (30 min) mitoenergetic dysfunction induced by the mitochondrial inhibitors piericidin A and antimycin A stimulated Glut1-mediated glucose uptake without altering Glut1 (also known as SLC2A1) mRNA or plasma membrane levels. The serine/threonine liver kinase B1 (LKB1; also known as STK11) and AMP-activated protein kinase (AMPK) played a central role in this stimulation. In contrast, ataxia-telangiectasia mutated (ATM; a potential AMPK kinase) and hydroethidium (HEt)-oxidizing reactive oxygen species (ROS; increased in piericidin-A- and antimycin-A-treated cells) appeared not to be involved in the stimulation of glucose uptake. Treatment with mitochondrial inhibitors increased NAD+ and NADH levels (associated with a lower NAD+:NADH ratio) but did not affect the level of Glut1 acetylation. Stimulation of glucose uptake was greatly reduced by chemical inhibition of Sirt2 or mTOR-RAPTOR. We propose that mitochondrial dysfunction triggers LKB1-mediated AMPK activation, which stimulates Sirt2 phosphorylation, leading to activation of mTOR-RAPTOR and Glut1-mediated glucose uptake.
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Affiliation(s)
- Dania C Liemburg-Apers
- Department of Biochemistry (286), Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, 6500HB, Nijmegen, The Netherlands.,Centre for Systems Biology and Bioenergetics, Radboud University and Radboud University Medical Center, 6500HB, Nijmegen, The Netherlands.,Department of Pediatrics, Radboud Center for Mitochondrial Medicine, Radboud University Medical Center, 6525GA, Nijmegen, The Netherlands
| | - Jori A L Wagenaars
- Department of Biochemistry (286), Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, 6500HB, Nijmegen, The Netherlands.,Centre for Systems Biology and Bioenergetics, Radboud University and Radboud University Medical Center, 6500HB, Nijmegen, The Netherlands.,Department of Pediatrics, Radboud Center for Mitochondrial Medicine, Radboud University Medical Center, 6525GA, Nijmegen, The Netherlands
| | - Jan A M Smeitink
- Centre for Systems Biology and Bioenergetics, Radboud University and Radboud University Medical Center, 6500HB, Nijmegen, The Netherlands.,Department of Pediatrics, Radboud Center for Mitochondrial Medicine, Radboud University Medical Center, 6525GA, Nijmegen, The Netherlands
| | - Peter H G M Willems
- Department of Biochemistry (286), Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, 6500HB, Nijmegen, The Netherlands.,Centre for Systems Biology and Bioenergetics, Radboud University and Radboud University Medical Center, 6500HB, Nijmegen, The Netherlands.,Department of Pediatrics, Radboud Center for Mitochondrial Medicine, Radboud University Medical Center, 6525GA, Nijmegen, The Netherlands
| | - Werner J H Koopman
- Department of Biochemistry (286), Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, 6500HB, Nijmegen, The Netherlands .,Centre for Systems Biology and Bioenergetics, Radboud University and Radboud University Medical Center, 6500HB, Nijmegen, The Netherlands.,Department of Pediatrics, Radboud Center for Mitochondrial Medicine, Radboud University Medical Center, 6525GA, Nijmegen, The Netherlands
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Grefte S, Adjobo-Hermans M, Versteeg E, Koopman W, Daamen W. Impaired primary mouse myotube formation on crosslinked type I collagen films is enhanced by laminin and entactin. Acta Biomater 2016; 30:265-276. [PMID: 26555376 DOI: 10.1016/j.actbio.2015.11.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 10/16/2015] [Accepted: 11/06/2015] [Indexed: 02/05/2023]
Abstract
In skeletal muscle, the stem cell niche is important for controlling the quiescent, proliferation and differentiation states of satellite cells, which are key for skeletal muscle regeneration after wounding. It has been shown that type I collagen, often used as 3D-scaffolds for regenerative medicine purposes, impairs myoblast differentiation. This is most likely due to the absence of specific extracellular matrix proteins providing attachment sites for myoblasts and/or myotubes. In this study we investigated the differentiation capacity of primary murine myoblasts on type I collagen films either untreated or modified with elastin, laminin, type IV collagen, laminin/entactin complex, combinations thereof, and Matrigel as a positive control. Additionally, increased reactive oxygen species (ROS) and ROCK signaling might also be involved. To measure ROS levels with live-cell microscopy, fibronectin-coated glass coverslips were additionally coated with type I collagen and Matrigel onto which myoblasts were differentiated. On type I collagen-coated coverslips, myotube formation was impaired while ROS levels were increased. However, anti-oxidant treatment did not enhance myotube formation. ROCK inhibition, which generally improve cellular attachment to uncoated surfaces or type I collagen, enhanced myoblast attachment to type I collagen-coated coverslips and -films, but slightly enhanced myotube formation. Only modification of type I collagen films by Matrigel and a combination of laminin/entactin significantly improved myotube formation. Our results indicate that type I collagen scaffolds can be modified by satellite cell niche factors of which specifically laminin and entactin enhanced myotube formation. This offers a promising approach for regenerative medicine purposes to heal skeletal muscle wounds. STATEMENT OF SIGNIFICANCE In this manuscript we show for the first time that impaired myotube formation on type I collagen scaffolds can be completely restored by modification with laminin and entactin, two extracellular proteins from the satellite cell niche. This offers a promising approach for regenerative medicine approaches to heal skeletal muscle wounds.
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