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Mostajeran M, Edvinsson L, Ahnstedt H, Arkelius K, Ansar S. Repair-related molecular changes during recovery phase of ischemic stroke in female rats. BMC Neurosci 2022; 23:23. [PMID: 35413803 PMCID: PMC9004052 DOI: 10.1186/s12868-022-00696-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 02/23/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Some degree of spontaneous recovery is usually observed after stroke. Experimental studies have provided information about molecular mechanisms underlying this recovery. However, the majority of pre-clinical stroke studies are performed in male rodents, and females are not well studied. This is a clear discrepancy when considering the clinical situation. Thus, it is important to include females in the evaluation of recovery mechanisms for future therapeutic strategies. This study aimed to evaluate spontaneous recovery and molecular mechanisms involved in the recovery phase two weeks after stroke in female rats. METHODS Transient middle cerebral artery occlusion was induced in female Wistar rats using a filament model. Neurological functions were assessed up to day 14 after stroke. Protein expression of interleukin 10 (IL-10), transforming growth factor (TGF)-β, neuronal specific nuclei protein (NeuN), nestin, tyrosine-protein kinase receptor Tie-2, extracellular signal-regulated kinase (ERK) 1/2, and Akt were evaluated in the peri-infarct and ischemic core compared to contralateral side of the brain at day 14 by western blot. Expression of TGF-β in middle cerebral arteries was evaluated by immunohistochemistry. RESULTS Spontaneous recovery after stroke was observed from day 2 to day 14 and was accompanied by a significantly higher expression of nestin, p-Akt, p-ERK1/2 and TGF-β in ischemic regions compared to contralateral side at day 14. In addition, a significantly higher expression of TGF-β was observed in occluded versus non-occluded middle cerebral arteries. The expression of Tie-2 and IL-10 did not differ between the ischemic and contralateral sides. CONCLUSION Spontaneous recovery after ischemic stroke in female rats was coincided by a difference observed in the expression of molecular markers. The alteration of these markers might be of importance to address future therapeutic strategies.
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Affiliation(s)
- Maryam Mostajeran
- Division of Experimental Vascular Research, Department of Clinical Sciences, Faculty of Medicine, Lund University, Lund, Sweden
| | - Lars Edvinsson
- Division of Experimental Vascular Research, Department of Clinical Sciences, Faculty of Medicine, Lund University, Lund, Sweden
| | - Hilda Ahnstedt
- Department of Neurology, McGovern Medical School at University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Kajsa Arkelius
- Applied Neurovascular Research, Neurosurgery, Department of Clinical Sciences, Faculty of Medicine, Lund University, Lund, Sweden
| | - Saema Ansar
- Applied Neurovascular Research, Neurosurgery, Department of Clinical Sciences, Faculty of Medicine, Lund University, Lund, Sweden.
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Bequignon E, Mangin D, Bécaud J, Pasquier J, Angely C, Bottier M, Escudier E, Isabey D, Filoche M, Louis B, Papon JF, Coste A. Pathogenesis of chronic rhinosinusitis with nasal polyps: role of IL-6 in airway epithelial cell dysfunction. J Transl Med 2020; 18:136. [PMID: 32209102 PMCID: PMC7092549 DOI: 10.1186/s12967-020-02309-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 03/16/2020] [Indexed: 12/20/2022] Open
Abstract
Background Chronic rhinosinusitis with nasal polyps (CRSwNP) is characterized by an alteration in airway epithelial cell functions including barrier function, wound repair mechanisms, mucociliary clearance. The mechanisms leading to epithelial cell dysfunction in nasal polyps (NPs) remain poorly understood. Our hypothesis was that among the inflammatory cytokines involved in NPs, IL-6 could alter epithelial repair mechanisms and mucociliary clearance. The aim of this study was to evaluate the in vitro effects of IL-6 on epithelial repair mechanisms in a wound repair model and on ciliary beating in primary cultures of Human Nasal Epithelial Cells (HNEC). Methods Primary cultures of HNEC taken from 38 patients during surgical procedures for CRSwNP were used in an in vitro model of wound healing. Effects of increasing concentrations of IL-6 (1 ng/mL, 10 ng/mL, and 100 ng/mL) and other ILs (IL-5, IL-9, IL-10) on wound closure kinetics were compared to cultures without IL-modulation. After wound closure, the differentiation process was characterized under basal conditions and after IL supplementation using cytokeratin-14, MUC5AC, and βIV tubulin as immunomarkers of basal, mucus, and ciliated cells, respectively. The ciliated edges of primary cultures were analyzed on IL-6 modulation by digital high-speed video-microscopy to measure: ciliary beating frequency (CBF), ciliary length, relative ciliary density, metachronal wavelength and the ciliary beating efficiency index. Results Our results showed that: (i) IL-6 accelerated airway wound repair in vitro, with a dose–response effect whereas no effect was observed after other ILs-stimulation. After 24 h, 79% of wounded wells with IL6-100 were fully repaired, vs 46% in the IL6-10 group, 28% in the IL6-1 group and 15% in the control group; (ii) specific migration analyses of closed wound at late repair stage (Day 12) showed IL-6 had the highest migration compared with other ILs (iii) The study of the IL-6 effect on ciliary function showed that CBF and metachronal wave increased but without significant modifications of ciliary density, length of cilia and efficiency index. Conclusion The up-regulated epithelial cell proliferation observed in polyps could be induced by IL-6 in the case of prior epithelial damage. IL-6 could be a major cytokine in NP physiopathology.
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Affiliation(s)
- Emilie Bequignon
- Service d'Oto-Rhino-Laryngologie et de Chirurgie cervico-faciale, AP-HP, Hôpital Henri Mondor et Centre Hospitalier Intercommunal de Créteil, 94010, Créteil, France. .,INSERM, U955, Equipe 13, Faculte de Medecine, 8 rue du General Sarrail, 94010, Créteil, France. .,Faculté de Médecine, Université Paris-Est, 94010, Créteil, France. .,CNRS ERL 7000, 94010, Créteil, France.
| | - David Mangin
- Service d'Oto-Rhino-Laryngologie et de Chirurgie cervico-faciale, AP-HP, Hôpital Henri Mondor et Centre Hospitalier Intercommunal de Créteil, 94010, Créteil, France.,INSERM, U955, Equipe 13, Faculte de Medecine, 8 rue du General Sarrail, 94010, Créteil, France.,Faculté de Médecine, Université Paris-Est, 94010, Créteil, France.,CNRS ERL 7000, 94010, Créteil, France
| | - Justine Bécaud
- Service d'Oto-Rhino-Laryngologie et de Chirurgie cervico-faciale, AP-HP, Hôpital Henri Mondor et Centre Hospitalier Intercommunal de Créteil, 94010, Créteil, France.,INSERM, U955, Equipe 13, Faculte de Medecine, 8 rue du General Sarrail, 94010, Créteil, France.,Faculté de Médecine, Université Paris-Est, 94010, Créteil, France.,CNRS ERL 7000, 94010, Créteil, France
| | - Jennifer Pasquier
- Nice Breast Institute, 06000, Nice, France.,Stem Cell & Microenvironment Laboratory, Weill Cornell Medicine-Qatar, Doha, Qatar
| | - Christelle Angely
- INSERM, U955, Equipe 13, Faculte de Medecine, 8 rue du General Sarrail, 94010, Créteil, France.,Faculté de Médecine, Université Paris-Est, 94010, Créteil, France.,CNRS ERL 7000, 94010, Créteil, France
| | - Mathieu Bottier
- INSERM, U955, Equipe 13, Faculte de Medecine, 8 rue du General Sarrail, 94010, Créteil, France.,Faculté de Médecine, Université Paris-Est, 94010, Créteil, France.,CNRS ERL 7000, 94010, Créteil, France
| | - Estelle Escudier
- Inserm U933, Paris, France.,Université Pierre et Marie Curie, Paris, France.,Service de génétique et d'embryologie médicale, AP-HP Hôpital Armand-Trousseau, Paris, France
| | - Daniel Isabey
- INSERM, U955, Equipe 13, Faculte de Medecine, 8 rue du General Sarrail, 94010, Créteil, France.,Faculté de Médecine, Université Paris-Est, 94010, Créteil, France.,CNRS ERL 7000, 94010, Créteil, France
| | - Marcel Filoche
- INSERM, U955, Equipe 13, Faculte de Medecine, 8 rue du General Sarrail, 94010, Créteil, France.,Faculté de Médecine, Université Paris-Est, 94010, Créteil, France.,CNRS ERL 7000, 94010, Créteil, France
| | - Bruno Louis
- INSERM, U955, Equipe 13, Faculte de Medecine, 8 rue du General Sarrail, 94010, Créteil, France.,Faculté de Médecine, Université Paris-Est, 94010, Créteil, France.,CNRS ERL 7000, 94010, Créteil, France
| | - Jean-François Papon
- INSERM, U955, Equipe 13, Faculte de Medecine, 8 rue du General Sarrail, 94010, Créteil, France.,CNRS ERL 7000, 94010, Créteil, France.,Service d'Oto-Rhino-Laryngologie et de Chirurgie cervico-faciale, AP-HP, Hôpital Bicêtre, 94270, Le Kremlin-Bicêtre, France.,Faculté de Médecine, Université Paris-Sud, 94275, Le Kremlin-Bicêtre, France
| | - André Coste
- Service d'Oto-Rhino-Laryngologie et de Chirurgie cervico-faciale, AP-HP, Hôpital Henri Mondor et Centre Hospitalier Intercommunal de Créteil, 94010, Créteil, France.,INSERM, U955, Equipe 13, Faculte de Medecine, 8 rue du General Sarrail, 94010, Créteil, France.,Faculté de Médecine, Université Paris-Est, 94010, Créteil, France.,CNRS ERL 7000, 94010, Créteil, France
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Crippa S, Nemir M, Ounzain S, Ibberson M, Berthonneche C, Sarre A, Boisset G, Maison D, Harshman K, Xenarios I, Diviani D, Schorderet D, Pedrazzini T. Comparative transcriptome profiling of the injured zebrafish and mouse hearts identifies miRNA-dependent repair pathways. Cardiovasc Res 2016; 110:73-84. [PMID: 26857418 PMCID: PMC4798047 DOI: 10.1093/cvr/cvw031] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Accepted: 01/28/2016] [Indexed: 02/07/2023] Open
Abstract
Aims The adult mammalian heart has poor regenerative capacity. In contrast, the zebrafish heart retains a robust capacity for regeneration into adulthood. These distinct responses are consequences of a differential utilization of evolutionary-conserved gene regulatory networks in the damaged heart. To systematically identify miRNA-dependent networks controlling cardiac repair following injury, we performed comparative gene and miRNA profiling of the cardiac transcriptome in adult mice and zebrafish. Methods and results Using an integrated approach, we show that 45 miRNA-dependent networks, involved in critical biological pathways, are differentially modulated in the injured zebrafish vs. mouse hearts. We study, more particularly, the miR-26a-dependent response. Therefore, miR-26a is down-regulated in the fish heart after injury, whereas its expression remains constant in the mouse heart. Targets of miR-26a involve activators of the cell cycle and Ezh2, a component of the polycomb repressive complex 2 (PRC2). Importantly, PRC2 exerts repressive functions on negative regulators of the cell cycle. In cultured neonatal cardiomyocytes, inhibition of miR-26a stimulates, therefore, cardiomyocyte proliferation. Accordingly, miR-26a knockdown prolongs the proliferative window of cardiomyocytes in the post-natal mouse heart. Conclusions This novel strategy identifies a series of miRNAs and associated pathways, in particular miR-26a, which represent attractive therapeutic targets for inducing repair in the injured heart.
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Affiliation(s)
- Stefania Crippa
- Experimental Cardiology Unit, Department of Medicine, University of Lausanne Medical School, Lausanne 1011, Switzerland
| | - Mohamed Nemir
- Experimental Cardiology Unit, Department of Medicine, University of Lausanne Medical School, Lausanne 1011, Switzerland
| | - Samir Ounzain
- Experimental Cardiology Unit, Department of Medicine, University of Lausanne Medical School, Lausanne 1011, Switzerland
| | - Mark Ibberson
- Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | - Corinne Berthonneche
- Cardiovascular Assessment Facility, University of Lausanne, Lausanne, Switzerland
| | - Alexandre Sarre
- Cardiovascular Assessment Facility, University of Lausanne, Lausanne, Switzerland
| | - Gaëlle Boisset
- Institute for Research in Ophthalmology, Sion, Switzerland
| | - Damien Maison
- Experimental Cardiology Unit, Department of Medicine, University of Lausanne Medical School, Lausanne 1011, Switzerland
| | - Keith Harshman
- Lausanne Genomic Technologies Facility, University of Lausanne, Lausanne, Switzerland
| | | | - Dario Diviani
- Department of Pharmacology and Toxicology, University of Lausanne, Lausanne, Switzerland
| | | | - Thierry Pedrazzini
- Experimental Cardiology Unit, Department of Medicine, University of Lausanne Medical School, Lausanne 1011, Switzerland
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