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Le Guével X, Josserand V, Harki O, Baulin VA, Henry M, Briançon-Marjollet A. Real-time visualization of dextran extravasation in intermittent hypoxia mice using noninvasive SWIR imaging. Am J Physiol Heart Circ Physiol 2024; 326:H900-H906. [PMID: 38363213 DOI: 10.1152/ajpheart.00787.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 01/29/2024] [Accepted: 01/29/2024] [Indexed: 02/17/2024]
Abstract
Imaging tools are crucial for studying the vascular network and its barrier function in various physiopathological conditions. Shortwave infrared (SWIR) window optical imaging allows noninvasive, in-depth exploration. We applied SWIR imaging, combined with vessel segmentation and deep learning analyses, to study real-time dextran probe extravasation in mice experiencing intermittent hypoxia (IH)-a characteristic of obstructive sleep apnea associated with potential cardiovascular alterations due to early vascular permeability. Evidence for permeability in this context is limited, making our investigation significant. C57Bl/6 mice were exposed to normoxia or intermittent hypoxia for 14 days. Then SWIR imaging between 1,250 and 1,700 nm was performed on the saphenous artery and vein and on the surrounding tissue after intravenous injection of labeled dextrans of two different sizes (10 or 70 kDa). Postprocessing and segmentation of the SWIR images were conducted using deep learning treatment. We monitored high-resolution signals, distinguishing arteries, veins, and surrounding tissues. In the saphenous artery and vein, after 70-kD dextran injection, tissue/vessel ratio was higher after intermittent hypoxia (IH) than normoxia (N) over 500 seconds (P < 0.05). However, the ratio was similar in N and IH after 10-kD dextran injection. The SWIR imaging technique allows noninvasive, real-time monitoring of dextran extravasation in vivo. Dextran 70 extravasation is increased after exposure to IH, suggesting an increased vessel permeability in this mice model of obstructive sleep apnea.NEW & NOTEWORTHY We demonstrate that SWIR imaging technique is a useful tool to monitor real-time dextran extravasation from vessels in vivo, with a high resolution. We report for the first time an increased real-time dextran (70 kD) extravasation in mice exposed to intermittent hypoxia for 14 days compared with normoxic controls.
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Affiliation(s)
- Xavier Le Guével
- University grenoble alpes, Institute for Advanced Biosciences, NSERM1209/CNRS-UMR5309, Grenoble, France
| | - Véronique Josserand
- University grenoble alpes, Institute for Advanced Biosciences, NSERM1209/CNRS-UMR5309, Grenoble, France
| | - Olfa Harki
- University grenoble alpes, INSERM U1300, HP2 Laboratory, Grenoble, France
| | - Vladimir A Baulin
- Departament Química Física i Inorgànica, Universitat Rovira i Virgili, Tarragona, Spain
| | - Maxime Henry
- University grenoble alpes, Institute for Advanced Biosciences, NSERM1209/CNRS-UMR5309, Grenoble, France
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Roche F, Briançon-Marjollet A, Dematteis M, Baldazza M, Gonthier B, Bertholon F, Perek N, Pépin JL. Early Increase in Blood-Brain Barrier Permeability in a Murine Model Exposed to Fifteen Days of Intermittent Hypoxia. Int J Mol Sci 2024; 25:3065. [PMID: 38474310 DOI: 10.3390/ijms25053065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 02/08/2024] [Accepted: 02/28/2024] [Indexed: 03/14/2024] Open
Abstract
Obstructive sleep apnea (OSA) is characterized by intermittent repeated episodes of hypoxia-reoxygenation. OSA is associated with cerebrovascular consequences. An enhanced blood-brain barrier (BBB) permeability has been proposed as a marker of those disorders. We studied in mice the effects of 1 day and 15 days intermittent hypoxia (IH) exposure on BBB function. We focused on the dorsal part of the hippocampus and attempted to identify the molecular mechanisms by combining in vivo BBB permeability (Evans blue tests) and mRNA expression of several junction proteins (zona occludens (ZO-1,2,3), VE-cadherin, claudins (1,5,12), cingulin) and of aquaporins (1,4,9) on hippocampal brain tissues. After 15 days of IH exposure we observed an increase in BBB permeability, associated with increased mRNA expressions of claudins 1 and 12, aquaporins 1 and 9. IH seemed to increase early for claudin-1 mRNA expression as it doubled with 1 day of exposure and returned near to its base level after 15 days. Claudin-1 overexpression may represent an immediate response to IH exposure. Then, after 15 days of exposure, an increase in functional BBB permeability was associated with enhanced expression of aquaporin. These BBB alterations are possibly associated with a vasogenic oedema that may affect brain functions and accelerate neurodegenerative processes.
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Affiliation(s)
- Frederic Roche
- INSERM, SAINBIOSE U1059, Université Jean Monnet Saint-Étienne, Mines Saint Etienne, F-42023 Saint-Étienne, France
- INSERM U1300, HP2 Laboratory, Université Grenoble Alpes, F-38042 Grenoble, France
| | | | - Maurice Dematteis
- INSERM U1300, HP2 Laboratory, Université Grenoble Alpes, F-38042 Grenoble, France
| | - Marie Baldazza
- INSERM U1300, HP2 Laboratory, Université Grenoble Alpes, F-38042 Grenoble, France
| | - Brigitte Gonthier
- INSERM U1300, HP2 Laboratory, Université Grenoble Alpes, F-38042 Grenoble, France
| | - Frederique Bertholon
- Centre de Ressources Biologiques, CHU de Saint Etienne, F-42055 Saint-Étienne, France
| | - Nathalie Perek
- INSERM, SAINBIOSE U1059, Université Jean Monnet Saint-Étienne, Mines Saint Etienne, F-42023 Saint-Étienne, France
| | - Jean-Louis Pépin
- INSERM U1300, HP2 Laboratory, Université Grenoble Alpes, F-38042 Grenoble, France
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Moriondo G, Soccio P, Minoves M, Scioscia G, Tondo P, Foschino Barbaro MP, Pépin JL, Briançon-Marjollet A, Lacedonia D. Intermittent Hypoxia Mediates Cancer Development and Progression Through HIF-1 and miRNA Regulation. Arch Bronconeumol 2023; 59:629-637. [PMID: 37517933 DOI: 10.1016/j.arbres.2023.07.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 07/05/2023] [Accepted: 07/06/2023] [Indexed: 08/01/2023]
Abstract
INTRODUCTION There is still a debate for the link between obstructive sleep apnoea (OSA) and cancer. The mechanisms underlying this causality are poorly understood. Several miRNAs are involved in cancer development and progression with expression being influenced by hypoxia. The aims of this work were (i) to compare miRNAs expression in controls versus patients affected by OSA without or with cancer (ONCO-OSA) and (ii) in colorectal cancer cells exposed to intermittent hypoxia (IH), to evaluate miRNAs impact on tumor progression in vitro. METHODS We detected miRNAs by qRT-PCR in patients' sera and in CaCo2 cells exposed to 2-32h of IH with or without acriflavine (ACF), a HIF-1 inhibitor. Viability and transwell invasion test were applied to investigate the proliferation and migration of CaCo2 exposed to IH and treated with miRNA inhibitors or acriflavine. HIF-1α activity was evaluated in CaCo2 cells after IH. RESULTS The levels of miR-21, miR-26a and miR-210 increased in OSA and ONCO-OSA patients compared to controls. MiR-23b increased in ONCO-OSA patients, and miR-27b and miR-145 increased in OSA but not ONCO-OSA patients. MiR-21, miR-26a, miR-23b and miR-210 increased in cells after IH. IH stimulated cell proliferation and migration. This effect was reduced after either miRNA inhibition or acriflavine treatment. MiRNA inhibition reduces HIF-1α gene expression. Conversely, acriflavine reduced the expression of these miRNAs. CONCLUSIONS We identified a signature of miRNAs, induced by the IH environment. They could be implicated in cancer development and progression through a regulatory loop involving HIF-1.
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Affiliation(s)
- Giorgia Moriondo
- Department of Medical and Surgical Sciences, University of Foggia, 71122 Foggia, Italy.
| | - Piera Soccio
- Department of Medical and Surgical Sciences, University of Foggia, 71122 Foggia, Italy
| | - Mélanie Minoves
- University Grenoble Alpes, INSERM U1300, CHU Grenoble Alpes, HP2 Laboratory, Grenoble, France
| | - Giulia Scioscia
- Department of Medical and Surgical Sciences, University of Foggia, 71122 Foggia, Italy; Institute of Respiratory Diseases, Policlinico Riuniti of Foggia, 71122 Foggia, Italy
| | - Pasquale Tondo
- Department of Medical and Surgical Sciences, University of Foggia, 71122 Foggia, Italy
| | - Maria Pia Foschino Barbaro
- Department of Medical and Surgical Sciences, University of Foggia, 71122 Foggia, Italy; Institute of Respiratory Diseases, Policlinico Riuniti of Foggia, 71122 Foggia, Italy
| | - Jean-Louis Pépin
- University Grenoble Alpes, INSERM U1300, CHU Grenoble Alpes, HP2 Laboratory, Grenoble, France
| | - Anne Briançon-Marjollet
- University Grenoble Alpes, INSERM U1300, CHU Grenoble Alpes, HP2 Laboratory, Grenoble, France
| | - Donato Lacedonia
- Department of Medical and Surgical Sciences, University of Foggia, 71122 Foggia, Italy; Institute of Respiratory Diseases, Policlinico Riuniti of Foggia, 71122 Foggia, Italy
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Dupuit V, Briançon-Marjollet A, Delacour C. Portrait of intense communications within microfluidic neural networks. Sci Rep 2023; 13:12306. [PMID: 37516789 PMCID: PMC10387102 DOI: 10.1038/s41598-023-39477-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 07/26/2023] [Indexed: 07/31/2023] Open
Abstract
In vitro model networks could provide cellular models of physiological relevance to reproduce and investigate the basic function of neural circuits on a chip in the laboratory. Several tools and methods have been developed since the past decade to build neural networks on a chip; among them, microfluidic circuits appear to be a highly promising approach. One of the numerous advantages of this approach is that it preserves stable somatic and axonal compartments over time due to physical barriers that prevent the soma from exploring undesired areas and guide neurites along defined pathways. As a result, neuron compartments can be identified and isolated, and their interconnectivity can be modulated to build a topological neural network (NN). Here, we have assessed the extent to which the confinement imposed by the microfluidic environment can impact cell development and shape NN activity. Toward that aim, microelectrode arrays have enabled the monitoring of the short- and mid-term evolution of neuron activation over the culture period at specific locations in organized (microfluidic) and random (control) networks. In particular, we have assessed the spike and burst rate, as well as the correlations between the extracted spike trains over the first stages of maturation. This study enabled us to observe intense neurite communications that would have been weaker and more delayed within random networks; the spiking rate, burst and correlations being reinforced over time in terms of number and amplitude, exceeding the electrophysiological features of standard cultures. Beyond the enhanced detection efficiency that was expected from the microfluidic channels, the confinement of cells seems to reinforce neural communications and cell development throughout the network.
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Affiliation(s)
- Victor Dupuit
- Institut Néel, University Grenoble Alpes, CNRS, Grenoble INP, 38000, Grenoble, France
| | - Anne Briançon-Marjollet
- HP2 Laboratory, University Grenoble Alpes, Institut National de la Santé et de la Recherche Médicale U1300, Grenoble, France
| | - Cécile Delacour
- Institut Néel, University Grenoble Alpes, CNRS, Grenoble INP, 38000, Grenoble, France.
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Minoves M, Hazane-Puch F, Moriondo G, Boutin-Paradis A, Lemarié E, Pépin JL, Godin-Ribuot D, Briançon-Marjollet A. Differential Impact of Intermittent vs. Sustained Hypoxia on HIF-1, VEGF and Proliferation of HepG2 Cells. Int J Mol Sci 2023; 24:ijms24086875. [PMID: 37108039 PMCID: PMC10139223 DOI: 10.3390/ijms24086875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 03/29/2023] [Accepted: 03/30/2023] [Indexed: 04/29/2023] Open
Abstract
Obstructive sleep apnea (OSA) is an emerging risk factor for cancer occurrence and progression, mainly mediated by intermittent hypoxia (IH). Systemic IH, a main landmark of OSA, and local sustained hypoxia (SH), a classical feature at the core of tumors, may act separately or synergistically on tumor cells. Our aim was to compare the respective consequences of intermittent and sustained hypoxia on HIF-1, endothelin-1 and VEGF expression and on cell proliferation and migration in HepG2 liver tumor cells. Wound healing, spheroid expansion, proliferation and migration were evaluated in HepG2 cells following IH or SH exposure. The HIF-1α, endothelin-1 and VEGF protein levels and/or mRNA expression were assessed, as were the effects of HIF-1 (acriflavine), endothelin-1 (macitentan) and VEGF (pazopanib) inhibition. Both SH and IH stimulated wound healing, spheroid expansion and proliferation of HepG2 cells. HIF-1 and VEGF, but not endothelin-1, expression increased with IH exposure but not with SH exposure. Acriflavine prevented the effects of both IH and SH, and pazopanib blocked those of IH but not those of SH. Macitentan had no impact. Thus, IH and SH stimulate hepatic cancer cell proliferation via distinct signaling pathways that may act synergistically in OSA patients with cancer, leading to enhanced tumor progression.
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Affiliation(s)
- Mélanie Minoves
- INSERM U1300, HP2 Laboratory, CHU Grenoble Alpes, University Grenoble Alpes, 38042 Grenoble, France
| | | | - Giorgia Moriondo
- Department of Medical and Surgical Sciences, University of Foggia, 71122 Foggia, Italy
| | - Antoine Boutin-Paradis
- INSERM U1300, HP2 Laboratory, CHU Grenoble Alpes, University Grenoble Alpes, 38042 Grenoble, France
| | - Emeline Lemarié
- INSERM U1300, HP2 Laboratory, CHU Grenoble Alpes, University Grenoble Alpes, 38042 Grenoble, France
| | - Jean-Louis Pépin
- INSERM U1300, HP2 Laboratory, CHU Grenoble Alpes, University Grenoble Alpes, 38042 Grenoble, France
| | - Diane Godin-Ribuot
- INSERM U1300, HP2 Laboratory, CHU Grenoble Alpes, University Grenoble Alpes, 38042 Grenoble, France
| | - Anne Briançon-Marjollet
- INSERM U1300, HP2 Laboratory, CHU Grenoble Alpes, University Grenoble Alpes, 38042 Grenoble, France
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Khouri C, El Amine B, Arnaud C, Belaidi E, Boete Q, Godin-Ribuot D, Levy P, Faury G, Harki O, Cracowski JL, Briançon-Marjollet A, Pepin JL. Co-authorship group significantly impacts reported arterial blood pressure variations in rodents exposed to intermittent hypoxia: a meta-research study. Cardiovasc Res 2023; 119:e128-e130. [PMID: 36975315 DOI: 10.1093/cvr/cvad048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/29/2022] [Accepted: 12/20/2022] [Indexed: 03/29/2023] Open
Affiliation(s)
- Charles Khouri
- Univ. Grenoble Alpes, HP2 Laboratory, Inserm U1300, Grenoble, France
- Grenoble Alpes University Hospital, Pharmacovigilance Unit, Grenoble, France
- Grenoble Alpes University Hospital, Clinical Pharmacology Department, INSERM CIC1406, Grenoble, France
| | - Bayan El Amine
- Univ. Grenoble Alpes, HP2 Laboratory, Inserm U1300, Grenoble, France
| | - Claire Arnaud
- Univ. Grenoble Alpes, HP2 Laboratory, Inserm U1300, Grenoble, France
| | - Elise Belaidi
- Univ. Grenoble Alpes, HP2 Laboratory, Inserm U1300, Grenoble, France
| | - Quentin Boete
- Univ. Grenoble Alpes, HP2 Laboratory, Inserm U1300, Grenoble, France
| | | | - Patrick Levy
- Univ. Grenoble Alpes, HP2 Laboratory, Inserm U1300, Grenoble, France
| | - Gilles Faury
- Univ. Grenoble Alpes, HP2 Laboratory, Inserm U1300, Grenoble, France
| | - Olfa Harki
- Univ. Grenoble Alpes, HP2 Laboratory, Inserm U1300, Grenoble, France
| | - Jean-Luc Cracowski
- Univ. Grenoble Alpes, HP2 Laboratory, Inserm U1300, Grenoble, France
- Grenoble Alpes University Hospital, Pharmacovigilance Unit, Grenoble, France
| | | | - Jean-Louis Pepin
- Univ. Grenoble Alpes, HP2 Laboratory, Inserm U1300, Grenoble, France
- Grenoble Alpes University Hospital, EFCR Laboratory, Thorax and Vessels division, Grenoble, France
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Belaidi E, Khouri C, Harki O, Baillieul S, Faury G, Briançon-Marjollet A, Pépin JL, Arnaud C. Cardiac consequences of intermittent hypoxia: a matter of dose? A systematic review and meta-analysis in rodents. Eur Respir Rev 2022; 31:31/164/210269. [PMID: 35418489 PMCID: PMC9171537 DOI: 10.1183/16000617.0269-2021] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 01/24/2022] [Indexed: 12/21/2022] Open
Abstract
Aim Intermittent hypoxia (IH) is considered to be a major contributor to obstructive sleep apnoea-related cardiovascular consequences. The present meta-analysis aimed to assess the effects of IH on cardiac remodelling, function and infarct size after myocardial ischaemia across different rodent species and IH severities. Methods and results Relevant articles from PubMed, Embase and Web of Science were screened. We performed a random effect meta-analysis to assess the effect of IH on myocardium in rodents by using standardised mean difference (SMD). Studies using rodents exposed to IH and outcomes related to cardiac remodelling, contractile function and response to myocardial ischaemia–reperfusion were included. 5217 articles were screened and 92 were included, demonstrating that IH exposure induced cardiac remodelling, characterised by cardiomyocyte hypertrophy (cross-sectional area: SMD=2.90, CI (0.82–4.98), I2=94.2%), left ventricular (LV) dilation (LV diameter: SMD=0.64, CI (0.18–1.10), I2=88.04%), interstitial fibrosis (SMD=5.37, CI (3.22–7.53), I2=94.8) and apoptosis (terminal deoxynucleotidyl transferase dUTP nick end labelling: SMD=6.70, CI (2.96–10.44), I2=95.9). These structural changes were accompanied by a decrease in LV ejection fraction (SMD=−1.82, CI (−2.52–−1.12), I2=94.22%). Importantly, most of the utilised IH protocols mimicked extremely severe hypoxic disease. Concerning infarct size, meta-regression analyses highlighted an ambivalent role of IH, depending on its severity. Indeed, IH exposure with inspiratory oxygen fraction (FIO2) <7% was associated with an increase in infarct size, whereas a reduced infarct size was reported for FIO2 levels above 10%. Heterogeneity between studies, small study effect and poor reporting of methods in included articles limited the robustness of the meta-analysis findings. Conclusion This meta-analysis demonstrated that severe IH systematically induces cardiac remodelling and contractile dysfunction in rodents, which might trigger or aggravate chronic heart failure. Interestingly, this meta-analysis showed that, depending on stimulus severity, IH exhibits both protective and aggravating effects on infarct size after experimental ischaemia–reperfusion procedures. This meta-analysis shows that IH induces cardiac remodelling and contractile dysfunction in rodents, independently of IH characteristics. Conversely, the dual response to myocardial ischaemia–reperfusion seems to be related to IH intensity and duration.https://bit.ly/3rdnR32
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Affiliation(s)
- Elise Belaidi
- Univ. Grenoble Alpes, INSERM, CHU Grenoble Alpes, HP2, Grenoble, France .,These authors contributed equally to this work
| | - Charles Khouri
- Univ. Grenoble Alpes, INSERM, CHU Grenoble Alpes, HP2, Grenoble, France.,Pharmacovigilance Unit and Clinical Pharmacology Dept, Grenoble Alpes University Hospital, Grenoble, France.,These authors contributed equally to this work
| | - Olfa Harki
- Univ. Grenoble Alpes, INSERM, CHU Grenoble Alpes, HP2, Grenoble, France
| | | | - Gilles Faury
- Univ. Grenoble Alpes, INSERM, CHU Grenoble Alpes, HP2, Grenoble, France
| | | | - Jean-Louis Pépin
- Univ. Grenoble Alpes, INSERM, CHU Grenoble Alpes, HP2, Grenoble, France
| | - Claire Arnaud
- Univ. Grenoble Alpes, INSERM, CHU Grenoble Alpes, HP2, Grenoble, France
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Harki O, Bouyon S, Sallé M, Arco-Hierves A, Lemarié E, Demory A, Chirica C, Vilgrain I, Pépin JL, Faury G, Briançon-Marjollet A. Inhibition of Vascular Endothelial Cadherin Cleavage Prevents Elastic Fiber Alterations and Atherosclerosis Induced by Intermittent Hypoxia in the Mouse Aorta. Int J Mol Sci 2022; 23:ijms23137012. [PMID: 35806017 PMCID: PMC9266969 DOI: 10.3390/ijms23137012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 06/17/2022] [Accepted: 06/21/2022] [Indexed: 01/27/2023] Open
Abstract
Intermittent hypoxia (IH), the major feature of obstructive sleep apnea syndrome (OSAS), induces atherosclerosis and elastic fiber alterations. VE-cadherin cleavage is increased in OSAS patients and in an IH-cellular model. It is mediated by HIF-1 and Src-tyr-kinases pathways and results in endothelial hyperpermeability. Our aim was to determine whether blocking VE-cadherin cleavage in vivo could be an efficient strategy to inhibit deleterious IH-induced vascular remodeling, elastic fiber defects and atherogenesis. VE-cadherin regulation, aortic remodeling and atherosclerosis were studied in IH-exposed C57Bl/6J or ApoE-/-mice treated or not with Src-tyr-kinases inhibitors (Saracatinib/Pazopanib) or a HIF-1 inhibitor (Acriflavine). Human aortic endothelial cells were exposed to IH and treated with the same inhibitors. LDL and the monocytes transendothelium passage were measured. In vitro, IH increased transendothelium LDL and monocytes passage, and the tested inhibitors prevented these effects. In mice, IH decreased VE-cadherin expression and increased plasmatic sVE level, intima-media thickness, elastic fiber alterations and atherosclerosis, while the inhibitors prevented these in vivo effects. In vivo inhibition of HIF-1 and Src tyr kinase pathways were associated with the prevention of IH-induced elastic fiber/lamella degradation and atherogenesis, which suggests that VE-cadherin could be an important target to limit atherogenesis and progression of arterial stiffness in OSAS.
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Affiliation(s)
- Olfa Harki
- Université Grenoble Alpes, INSERM U1300, CHU Grenoble Alpes, Laboratoire HP2, 38042 Grenoble, France; (O.H.); (S.B.); (M.S.); (A.A.-H.); (E.L.); (A.D.); (J.-L.P.); (A.B.-M.)
| | - Sophie Bouyon
- Université Grenoble Alpes, INSERM U1300, CHU Grenoble Alpes, Laboratoire HP2, 38042 Grenoble, France; (O.H.); (S.B.); (M.S.); (A.A.-H.); (E.L.); (A.D.); (J.-L.P.); (A.B.-M.)
| | - Marine Sallé
- Université Grenoble Alpes, INSERM U1300, CHU Grenoble Alpes, Laboratoire HP2, 38042 Grenoble, France; (O.H.); (S.B.); (M.S.); (A.A.-H.); (E.L.); (A.D.); (J.-L.P.); (A.B.-M.)
| | - Alejandro Arco-Hierves
- Université Grenoble Alpes, INSERM U1300, CHU Grenoble Alpes, Laboratoire HP2, 38042 Grenoble, France; (O.H.); (S.B.); (M.S.); (A.A.-H.); (E.L.); (A.D.); (J.-L.P.); (A.B.-M.)
| | - Emeline Lemarié
- Université Grenoble Alpes, INSERM U1300, CHU Grenoble Alpes, Laboratoire HP2, 38042 Grenoble, France; (O.H.); (S.B.); (M.S.); (A.A.-H.); (E.L.); (A.D.); (J.-L.P.); (A.B.-M.)
| | - Alexandra Demory
- Université Grenoble Alpes, INSERM U1300, CHU Grenoble Alpes, Laboratoire HP2, 38042 Grenoble, France; (O.H.); (S.B.); (M.S.); (A.A.-H.); (E.L.); (A.D.); (J.-L.P.); (A.B.-M.)
| | - Carole Chirica
- Unité Biochimie Immunoanalyse, Service de Biochimie SB2TE, CHU Grenoble Alpes, 38000 Grenoble, France;
| | - Isabelle Vilgrain
- Université Grenoble Alpes, INSERM U1292, CEA, 38042 Grenoble, France;
| | - Jean-Louis Pépin
- Université Grenoble Alpes, INSERM U1300, CHU Grenoble Alpes, Laboratoire HP2, 38042 Grenoble, France; (O.H.); (S.B.); (M.S.); (A.A.-H.); (E.L.); (A.D.); (J.-L.P.); (A.B.-M.)
| | - Gilles Faury
- Université Grenoble Alpes, INSERM U1300, CHU Grenoble Alpes, Laboratoire HP2, 38042 Grenoble, France; (O.H.); (S.B.); (M.S.); (A.A.-H.); (E.L.); (A.D.); (J.-L.P.); (A.B.-M.)
- Correspondence:
| | - Anne Briançon-Marjollet
- Université Grenoble Alpes, INSERM U1300, CHU Grenoble Alpes, Laboratoire HP2, 38042 Grenoble, France; (O.H.); (S.B.); (M.S.); (A.A.-H.); (E.L.); (A.D.); (J.-L.P.); (A.B.-M.)
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Hierves AA, Harki O, Bouyon S, Lemarie E, Pépin JL, Faury G, Briançon-Marjollet A. VE-cadherin cleavage in obstructive sleep apnea syndrome: Signalling pathway and proteases as anti-atherogenic targets. Archives of Cardiovascular Diseases Supplements 2022. [DOI: 10.1016/j.acvdsp.2022.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Harki O, Faury G, Vilgrain I, Pépin JL, Briançon-Marjollet A. Reply: Soluble VE-cadherin: not just a marker of endothelial permeability. Eur Respir J 2021; 58:13993003.02629-2021. [PMID: 34711535 DOI: 10.1183/13993003.02629-2021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 10/11/2021] [Indexed: 02/03/2023]
Affiliation(s)
- Olfa Harki
- Univ. Grenoble Alpes, INSERM, CHU Grenoble Alpes, HP2, Grenoble, France
| | - Gilles Faury
- Univ. Grenoble Alpes, INSERM, CHU Grenoble Alpes, HP2, Grenoble, France
| | | | - Jean-Louis Pépin
- Univ. Grenoble Alpes, INSERM, CHU Grenoble Alpes, HP2, Grenoble, France
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11
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Harki O, Boete Q, Pépin JL, Arnaud C, Belaidi E, Faury G, Khouri C, Briançon-Marjollet A. Intermittent hypoxia-related alterations in vascular structure and function: a systematic review and meta-analysis of rodent data. Eur Respir J 2021; 59:13993003.00866-2021. [PMID: 34413154 DOI: 10.1183/13993003.00866-2021] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 07/25/2021] [Indexed: 12/09/2022]
Abstract
Obstructive Sleep Apnea and the related intermittent hypoxia (IH) are widely recognised as risk factors for incident cardiovascular diseases. Numerous studies support the deleterious vascular impact of IH in rodents but an overall interpretation is challenging owing to heterogeneity in rodent species investigated and the severity and duration of IH exposure.To clarify this major issue, we conducted a systematic review and meta-analysis to quantify the impact of IH on systemic artery structure and function depending on the different IH exposure designs.We searched PubMed, Embase and Web of Sciences and included 125 articles in a meta-analysis, among them 112 using wild-type rodents and 13 using Apolipoprotein E knock-out mice. We used the standardised mean difference (SMD) to compare results between studies.IH significantly increased mean arterial pressure (+13.90 mmHg (95% CI [11.88; 15.92]), systolic and diastolic blood pressure. Meta-regressions showed that mean arterial pressure change was associated with strain and year of publication. IH altered vasodilation in males but not in females, and increased endothelin-1-induced, but not phenylephrine-induced, vasoconstriction. Intima-media thickness significantly increased upon IH exposure (SMD 1.10 [0.58; 1.62], absolute values: +5.23 (2.81-7.84)). This increase was observed in mice but not in rats, and was negatively associated with age. Finally IH increased atherosclerotic plaque size in ApoE-/- mice (SMD 1.08 [0.80; 1.37]).To conclude, our meta-analysis established that IH, independently of other confounders, has a strong effect on vascular structure and physiology. Our findings support the interest of identifying and treating sleep apnea in routine cardiology practice.
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Affiliation(s)
- Olfa Harki
- Univ. Grenoble Alpes, INSERM, CHU Grenoble Alpes, Grenoble, France
| | - Quentin Boete
- Univ. Grenoble Alpes, INSERM, CHU Grenoble Alpes, Grenoble, France
| | - Jean-Louis Pépin
- Univ. Grenoble Alpes, INSERM, CHU Grenoble Alpes, Grenoble, France
| | - Claire Arnaud
- Univ. Grenoble Alpes, INSERM, CHU Grenoble Alpes, Grenoble, France
| | - Elise Belaidi
- Univ. Grenoble Alpes, INSERM, CHU Grenoble Alpes, Grenoble, France
| | - Gilles Faury
- Univ. Grenoble Alpes, INSERM, CHU Grenoble Alpes, Grenoble, France
| | - Charles Khouri
- Univ. Grenoble Alpes, INSERM, CHU Grenoble Alpes, Grenoble, France.,Pharmacovigilance Unit & Clinical Pharmacology Department, Grenoble Alpes University Hospital, Grenoble, France.,Co-last authors have equally contributed to the work
| | - Anne Briançon-Marjollet
- Univ. Grenoble Alpes, INSERM, CHU Grenoble Alpes, Grenoble, France .,Co-last authors have equally contributed to the work
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12
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Harki O, Tamisier R, Pépin JL, Bailly S, Mahmani A, Gonthier B, Salomon A, Vilgrain I, Faury G, Briançon-Marjollet A. VE-cadherin cleavage in sleep apnoea: new insights into intermittent hypoxia-related endothelial permeability. Eur Respir J 2021; 58:13993003.04518-2020. [PMID: 33737411 DOI: 10.1183/13993003.04518-2020] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 02/24/2021] [Indexed: 01/16/2023]
Abstract
BACKGROUND Obstructive sleep apnoea (OSA) causes intermittent hypoxia that in turn induces endothelial dysfunction and atherosclerosis progression. We hypothesised that VE-cadherin cleavage, detected by its released extracellular fragment solubilised in the blood (sVE), may be an early indicator of emergent abnormal endothelial permeability. Our aim was to assess VE-cadherin cleavage in OSA patients and in in vivo and in vitro intermittent hypoxia models to decipher the cellular mechanisms and consequences. METHODS Sera from seven healthy volunteers exposed to 14 nights of intermittent hypoxia, 43 OSA patients and 31 healthy control subjects were analysed for their sVE content. Human aortic endothelial cells (HAECs) were exposed to 6 h of intermittent hypoxia in vitro, with or without an antioxidant or inhibitors of hypoxia-inducible factor (HIF)-1, tyrosine kinases or vascular endothelial growth factor (VEGF) pathways. VE-cadherin cleavage and phosphorylation were evaluated, and endothelial permeability was assessed by measuring transendothelial electrical resistance (TEER) and fluorescein isothiocyanate (FITC)-dextran flux. RESULTS sVE was significantly elevated in sera from healthy volunteers submitted to intermittent hypoxia and OSA patients before treatment, but conversely decreased in OSA patients after 6 months of continuous positive airway pressure treatment. OSA was the main factor accounting for sVE variations in a multivariate analysis. In in vitro experiments, cleavage and expression of VE-cadherin increased upon HAEC exposure to intermittent hypoxia. TEER decreased and FITC-dextran flux increased. These effects were reversed by all of the pharmacological inhibitors tested. CONCLUSIONS We suggest that in OSA, intermittent hypoxia increases endothelial permeability in OSA by inducing VE-cadherin cleavage through reactive oxygen species production, and activation of HIF-1, VEGF and tyrosine kinase pathways.
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Affiliation(s)
- Olfa Harki
- Université Grenoble Alpes, INSERM, CHU Grenoble Alpes, Laboratoire HP2, Grenoble, France
| | - Renaud Tamisier
- Université Grenoble Alpes, INSERM, CHU Grenoble Alpes, Laboratoire HP2, Grenoble, France
| | - Jean-Louis Pépin
- Université Grenoble Alpes, INSERM, CHU Grenoble Alpes, Laboratoire HP2, Grenoble, France
| | - Sébastien Bailly
- Université Grenoble Alpes, INSERM, CHU Grenoble Alpes, Laboratoire HP2, Grenoble, France
| | - Anissa Mahmani
- Université Grenoble Alpes, INSERM, CHU Grenoble Alpes, Laboratoire HP2, Grenoble, France
| | - Brigitte Gonthier
- Université Grenoble Alpes, INSERM, CHU Grenoble Alpes, Laboratoire HP2, Grenoble, France
| | - Aude Salomon
- Université Grenoble Alpes, INSERM U1036, CEA, Grenoble, France
| | | | - Gilles Faury
- Université Grenoble Alpes, INSERM, CHU Grenoble Alpes, Laboratoire HP2, Grenoble, France
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13
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Bourrier A, Szarpak-Jankowska A, Veliev F, Olarte-Hernandez R, Shkorbatova P, Bonizzato M, Rey E, Barraud Q, Briançon-Marjollet A, Auzely R, Courtine G, Bouchiat V, Delacour C. Introducing a biomimetic coating for graphene neuroelectronics: toward in-vivoapplications. Biomed Phys Eng Express 2020; 7. [PMID: 35125348 DOI: 10.1088/2057-1976/ab42d6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 09/09/2019] [Indexed: 11/12/2022]
Abstract
Electronic micro and nano-devices are suitable tools to monitor the activity of many individual neurons over mesoscale networks. However the inorganic materials currently used in microelectronics are barely accepted by neural cells and tissues, thus limiting both the sensor lifetime and efficiency. In particular, penetrating intracortical probes face high failure rate because of a wide immune response of cells and tissues. This adverse reaction called gliosis leads to the rejection of the implanted probe after few weeks and prevent long-lasting recordings of cortical neurons. Such acceptance issue impedes the realization of many neuro-rehabilitation projects. To overcome this, graphene and related carbon-based materials have attracted a lot of interest regarding their positive impact on the adhesion and regeneration of neurons, and their ability to provide high-sensitive electronic devices, such as graphene field effect transistor (G-FET). Such devices can also be implemented on numerous suitable substrates including soft substrates to match the mechanical compliance of cells and tissues, improving further the biocompatibility of the implants. Thus, using graphene as a coating and sensing device material could significantly enhance the acceptance of intracortical probes. However, such a thin monolayer of carbon atoms could be teared off during manipulation and insertion within the brain, and could also display degradation over time. In this work, we have investigated the ability to protect graphene with a natural, biocompatible and degradable polymeric film derivated from hyaluronic acid (HA). We demonstrate that HA-based coatings can be deposited over a wide range of substrates, including intracortical probes and graphene FET arrays without altering the underlying device material, its biocompatibility and sensitivity. Moreover, we show that this coating can be monitoredin situby quantifying the number of deposited charges with the G-FET arrays. The reported graphene functionalization offers promising alternatives for improving the acceptance of various neural interfaces.
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Affiliation(s)
- Antoine Bourrier
- Institut Néel, CNRS & Université Grenoble Alpes, 38042 Grenoble, France
| | | | - Farida Veliev
- Institut Néel, CNRS & Université Grenoble Alpes, 38042 Grenoble, France
| | | | - Polina Shkorbatova
- Center for Neuroprosthetics and Brain-Mind Institute, School of Life Sciences, Swiss Federal Institute of Technology (EPFL), Campus Biotech CH-1202 Geneva, Switzerland
| | - Marco Bonizzato
- Center for Neuroprosthetics and Brain-Mind Institute, School of Life Sciences, Swiss Federal Institute of Technology (EPFL), Campus Biotech CH-1202 Geneva, Switzerland
| | - Elodie Rey
- Center for Neuroprosthetics and Brain-Mind Institute, School of Life Sciences, Swiss Federal Institute of Technology (EPFL), Campus Biotech CH-1202 Geneva, Switzerland
| | - Quentin Barraud
- Center for Neuroprosthetics and Brain-Mind Institute, School of Life Sciences, Swiss Federal Institute of Technology (EPFL), Campus Biotech CH-1202 Geneva, Switzerland
| | - Anne Briançon-Marjollet
- Grenoble Alpes, HP2 Laboratory, Institut National de la Santé et de la Recherche Médicale U1042, Grenoble, France
| | - Rachel Auzely
- University Grenoble Alpes, CERMAV-CNRS, 38000 Grenoble, France
| | - Gregoire Courtine
- Center for Neuroprosthetics and Brain-Mind Institute, School of Life Sciences, Swiss Federal Institute of Technology (EPFL), Campus Biotech CH-1202 Geneva, Switzerland
| | - Vincent Bouchiat
- Institut Néel, CNRS & Université Grenoble Alpes, 38042 Grenoble, France
| | - Cécile Delacour
- Institut Néel, CNRS & Université Grenoble Alpes, 38042 Grenoble, France
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Fhayli W, Boëté Q, Harki O, Briançon-Marjollet A, Jacob MP, Faury G. Rise and fall of elastic fibers from development to aging. Consequences on arterial structure-function and therapeutical perspectives. Matrix Biol 2019; 84:41-56. [PMID: 31493460 DOI: 10.1016/j.matbio.2019.08.005] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 08/03/2019] [Accepted: 08/26/2019] [Indexed: 12/12/2022]
Abstract
In the arteries of vertebrates, evolution has given rise to resilient macromolecular structures, elastin and elastic fibers, capable of sustaining an elevated blood pressure and smoothening the discontinuous blood flow and pressure generated by the heart. Elastic fibers are produced only during development and childhood, before being progressively degraded by mechanical stress and enzymatic activities during adulthood and aging. During this period, arterial elastic fiber calcification and loading of lipids also occur, all of these events conducting to arteriosclerosis. This leads to a progressive dysfunction of the large elastic arteries inducing elevated blood pressure as well as altered hemodynamics and organ perfusion, which induce more global malfunctions of the body during normal aging. Additionally, some arterial conditions occur more frequently with advancing age, such as atherosclerosis or aneurysms, which are called age-related diseases or pathological aging. The physiological or pathological degradation of elastic fibers and function of elastic arteries seemed to be rather inevitable over time. However, during the recent years, different molecules - including several ATP-dependent potassium channel openers, such as minoxidil - have been shown to re-induce elastin production and elastic fiber assembly, leading to improvements in the arterial structure and function or in organ perfusion. This review summarizes the changes in the arterial elastic fibers and structure from development until aging, and presents some of the potential pharmacotherapies leading to elastic fiber neosynthesis and arterial function improvement.
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Affiliation(s)
- Wassim Fhayli
- Univ. Grenoble Alpes, Inserm U1042, CHU Grenoble Alpes, HP2, 38000 Grenoble, France
| | - Quentin Boëté
- Univ. Grenoble Alpes, Inserm U1042, CHU Grenoble Alpes, HP2, 38000 Grenoble, France
| | - Olfa Harki
- Univ. Grenoble Alpes, Inserm U1042, CHU Grenoble Alpes, HP2, 38000 Grenoble, France
| | | | - Marie-Paule Jacob
- INSERM, U1148, and Hopital Bichat-Claude Bernard, 46 rue Henri Huchard, 75877 Paris, France
| | - Gilles Faury
- Univ. Grenoble Alpes, Inserm U1042, CHU Grenoble Alpes, HP2, 38000 Grenoble, France.
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15
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Morand J, Briançon-Marjollet A, Lemarie E, Gonthier B, Arnaud J, Korichneva I, Godin-Ribuot D. Zinc deficiency promotes endothelin secretion and endothelial cell migration through nuclear hypoxia-inducible factor-1 translocation. Am J Physiol Cell Physiol 2019; 317:C270-C276. [PMID: 31116583 DOI: 10.1152/ajpcell.00460.2018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Zinc is involved in the expression and function of various transcription factors, including the hypoxia-inducible factor-1 (HIF-1). HIF-1 and its target gene endothelin-1 (ET-1) are activated by intermittent hypoxia (IH), one of the main consequences of obstructive sleep apnea (OSA), and both play a key role in the cardiovascular consequences of IH. Because OSA and IH are associated with zinc deficiency, we investigated the effect of zinc deficiency caused by chelation on the HIF-1/ET-1 pathway and its functional consequences in endothelial cells. Primary human microvascular endothelial cells (HMVEC) were incubated with submicromolar doses of the zinc-specific membrane-permeable chelator N,N,N',N'-tetrakis(2-pyridylmethyl)-ethylene diamine (TPEN, 0.5 µM) or ET-1 (0.01 µM) with or without bosentan, a dual ET-1-receptor antagonist. HIF-1α expression was silenced by transfection with specific siRNA. Nuclear HIF-1 content was assessed by immunofluorescence microscopy and Western blot. Migratory capacity of HMVEC was evaluated with a wound-healing scratch assay. Zinc chelation by TPEN exposure induced the translocation of the cytosolic HIF-1α subunit of HIF-1 to the nucleus as well as an HIF-1-mediated ET-1 secretion by HMVEC. Incubation with either TPEN or ET-1 increased endothelial wound-healing capacity. Both HIF-1α silencing or bosentan abolished this effect. Altogether, these results suggest that zinc deficiency upregulates ET-1 signaling through HIF-1 activation and stimulates endothelial cell migration, suggesting an important role of zinc in the vascular consequences of IH and OSA mediated by HIF-1-ET- signaling.
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Affiliation(s)
- Jessica Morand
- Université Grenoble Alpes, INSERM, CHU Grenoble Alpes, Laboratoire HP2, Grenoble, France
| | | | - Emeline Lemarie
- Université Grenoble Alpes, INSERM, CHU Grenoble Alpes, Laboratoire HP2, Grenoble, France
| | - Brigitte Gonthier
- Université Grenoble Alpes, INSERM, CHU Grenoble Alpes, Laboratoire HP2, Grenoble, France
| | - Josiane Arnaud
- CHUGA, Biochimie Hormonale et nutritionnelle, Grenoble, France.,Université Grenoble Alpes, INSERM, Grenoble, France
| | - Irina Korichneva
- Université Grenoble Alpes, INSERM, CHU Grenoble Alpes, Laboratoire HP2, Grenoble, France.,Faculty of Pharmacology and Medicine, University of Picardie Jules Verne, Amiens, France
| | - Diane Godin-Ribuot
- Université Grenoble Alpes, INSERM, CHU Grenoble Alpes, Laboratoire HP2, Grenoble, France
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16
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Arnaud C, Bouyon S, Recoquillon S, Brasseur S, Lemarié E, Briançon-Marjollet A, Gonthier B, Toral M, Faury G, Martinez MC, Andriantsitohaina R, Pepin JL. Nonmuscle Myosin Light Chain Kinase: A Key Player in Intermittent Hypoxia-Induced Vascular Alterations. J Am Heart Assoc 2018; 7:JAHA.117.007893. [PMID: 29371201 PMCID: PMC5850262 DOI: 10.1161/jaha.117.007893] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Background Obstructive sleep apnea is characterized by repetitive pharyngeal collapses during sleep, leading to intermittent hypoxia (IH), the main contributor of obstructive sleep apnea–related cardiovascular morbidity. In patients and rodents with obstructive sleep apnea exposed to IH, vascular inflammation and remodeling, endothelial dysfunction, and circulating inflammatory markers are linked with IH severity. The nonmuscle myosin light chain kinase (nmMLCK) isoform contributes to vascular inflammation and oxidative stress in different cardiovascular and inflammatory diseases. Thus, in the present study, we hypothesized that nmMLCK plays a key role in the IH‐induced vascular dysfunctions and inflammatory remodeling. Methods and Results Twelve‐week‐old nmMLCK+/+ or nmMLCK−/− mice were exposed to 14‐day IH or normoxia. IH was associated with functional alterations characterized by an elevation of arterial blood pressure and stiffness and perturbations of NO signaling. IH caused endothelial barrier dysfunction (ie, reduced transendothelial resistance in vitro) and induced vascular oxidative stress associated with an inflammatory remodeling, characterized by an increased intima‐media thickness and an increased expression and activity of inflammatory markers, such as interferon‐γ and nuclear factor‐κB, in the vascular wall. Interestingly, nmMLCK deletion prevented all IH‐induced functional and structural alterations, including the restoration of NO signaling, correction of endothelial barrier integrity, and reduction of both oxidative stress and associated inflammatory response. Conclusions nmMLCK is a key mechanism in IH‐induced vascular oxidative stress and inflammation and both functional and structural remodeling.
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Affiliation(s)
- Claire Arnaud
- Laboratoire HP2, Université Grenoble Alpes, Grenoble, France .,Laboratoire HP2, INSERM U1042, Grenoble, France
| | - Sophie Bouyon
- Laboratoire HP2, Université Grenoble Alpes, Grenoble, France.,Laboratoire HP2, INSERM U1042, Grenoble, France
| | - Sylvain Recoquillon
- Université d'Angers Université Bretagne Loire, Angers, France.,INSERM UMR1063, Angers, France
| | - Sandrine Brasseur
- Laboratoire HP2, Université Grenoble Alpes, Grenoble, France.,Laboratoire HP2, INSERM U1042, Grenoble, France
| | - Emeline Lemarié
- Laboratoire HP2, Université Grenoble Alpes, Grenoble, France.,Laboratoire HP2, INSERM U1042, Grenoble, France
| | - Anne Briançon-Marjollet
- Laboratoire HP2, Université Grenoble Alpes, Grenoble, France.,Laboratoire HP2, INSERM U1042, Grenoble, France
| | - Brigitte Gonthier
- Laboratoire HP2, Université Grenoble Alpes, Grenoble, France.,Laboratoire HP2, INSERM U1042, Grenoble, France
| | - Marta Toral
- Université d'Angers Université Bretagne Loire, Angers, France.,INSERM UMR1063, Angers, France
| | - Gilles Faury
- Laboratoire HP2, Université Grenoble Alpes, Grenoble, France.,Laboratoire HP2, INSERM U1042, Grenoble, France
| | - M Carmen Martinez
- Université d'Angers Université Bretagne Loire, Angers, France.,INSERM UMR1063, Angers, France
| | | | - Jean-Louis Pepin
- Laboratoire HP2, Université Grenoble Alpes, Grenoble, France.,Laboratoire HP2, INSERM U1042, Grenoble, France.,Laboratoire d'Exploration Fonctionnelle Cardiovasculaire et Respiratoire, Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France
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17
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Minoves M, Morand J, Perriot F, Chatard M, Gonthier B, Lemarié E, Menut JB, Polak J, Pépin JL, Godin-Ribuot D, Briançon-Marjollet A. An innovative intermittent hypoxia model for cell cultures allowing fast Po2 oscillations with minimal gas consumption. Am J Physiol Cell Physiol 2017; 313:C460-C468. [DOI: 10.1152/ajpcell.00098.2017] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Revised: 07/20/2017] [Accepted: 07/20/2017] [Indexed: 01/13/2023]
Abstract
Performing hypoxia-reoxygenation cycles in cell culture with a cycle duration accurately reflecting what occurs in obstructive sleep apnea (OSA) patients is a difficult but crucial technical challenge. Our goal was to develop a novel device to expose multiple cell culture dishes to intermittent hypoxia (IH) cycles relevant to OSA with limited gas consumption. With gas flows as low as 200 ml/min, our combination of plate holders with gas-permeable cultureware generates rapid normoxia-hypoxia cycles. Cycles alternating 1 min at 20% O2 followed by 1 min at 2% O2 resulted in Po2 values ranging from 124 to 44 mmHg. Extending hypoxic and normoxic phases to 10 min allowed Po2 variations from 120 to 25 mmHg. The volume of culture medium or the presence of cells only modestly affected the Po2 variations. In contrast, the nadir of the hypoxia phase increased when measured at different heights above the membrane. We validated the physiological relevance of this model by showing that hypoxia inducible factor-1α expression was significantly increased by IH exposure in human aortic endothelial cells, murine breast carcinoma (4T1) cells as well as in a blood-brain barrier model (2.5-, 1.5-, and 6-fold increases, respectively). In conclusion, we have established a new device to perform rapid intermittent hypoxia cycles in cell cultures, with minimal gas consumption and the possibility to expose several culture dishes simultaneously. This device will allow functional studies of the consequences of IH and deciphering of the molecular biology of IH at the cellular level using oxygen cycles that are clinically relevant to OSA.
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Affiliation(s)
- Mélanie Minoves
- HP2 Laboratory, Université Grenoble Alpes, Grenoble, France
- INSERM, U1042, Grenoble, France
| | - Jessica Morand
- HP2 Laboratory, Université Grenoble Alpes, Grenoble, France
- INSERM, U1042, Grenoble, France
| | - Frédéric Perriot
- HP2 Laboratory, Université Grenoble Alpes, Grenoble, France
- INSERM, U1042, Grenoble, France
| | - Morgane Chatard
- Université de Lyon and Université Jean Monnet, Saint-Etienne, France
| | - Brigitte Gonthier
- HP2 Laboratory, Université Grenoble Alpes, Grenoble, France
- INSERM, U1042, Grenoble, France
| | - Emeline Lemarié
- HP2 Laboratory, Université Grenoble Alpes, Grenoble, France
- INSERM, U1042, Grenoble, France
| | | | - Jan Polak
- Center for Research on Diabetes, Metabolism and Nutrition Third Faculty of Medicine, Charles University, Prague, Czech Republic; and
| | - Jean-Louis Pépin
- HP2 Laboratory, Université Grenoble Alpes, Grenoble, France
- INSERM, U1042, Grenoble, France
- Centre Hospitalier Universitaire, Grenoble, France
| | - Diane Godin-Ribuot
- HP2 Laboratory, Université Grenoble Alpes, Grenoble, France
- INSERM, U1042, Grenoble, France
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18
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Veliev F, Han Z, Kalita D, Briançon-Marjollet A, Bouchiat V, Delacour C. Recording Spikes Activity in Cultured Hippocampal Neurons Using Flexible or Transparent Graphene Transistors. Front Neurosci 2017; 11:466. [PMID: 28894412 PMCID: PMC5581354 DOI: 10.3389/fnins.2017.00466] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Accepted: 08/07/2017] [Indexed: 12/21/2022] Open
Abstract
The emergence of nanoelectronics applied to neural interfaces has started few decades ago, and aims to provide new tools for replacing or restoring disabled functions of the nervous systems as well as further understanding the evolution of such complex organization. As the same time, graphene and other 2D materials have offered new possibilities for integrating micro and nano-devices on flexible, transparent, and biocompatible substrates, promising for bio and neuro-electronics. In addition to many bio-suitable features of graphene interface, such as, chemical inertness and anti-corrosive properties, its optical transparency enables multimodal approach of neuronal based systems, the electrical layer being compatible with additional microfluidics and optical manipulation ports. The convergence of these fields will provide a next generation of neural interfaces for the reliable detection of single spike and record with high fidelity activity patterns of neural networks. Here, we report on the fabrication of graphene field effect transistors (G-FETs) on various substrates (silicon, sapphire, glass coverslips, and polyimide deposited onto Si/SiO2 substrates), exhibiting high sensitivity (4 mS/V, close to the Dirac point at VLG < VD) and low noise level (10-22 A2/Hz, at VLG = 0 V). We demonstrate the in vitro detection of the spontaneous activity of hippocampal neurons in-situ-grown on top of the graphene sensors during several weeks in a millimeter size PDMS fluidics chamber (8 mm wide). These results provide an advance toward the realization of biocompatible devices for reliable and high spatio-temporal sensing of neuronal activity for both in vitro and in vivo applications.
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Affiliation(s)
- Farida Veliev
- Institut Néel, Centre National de la Recherche Scientifique and Université Grenoble AlpesGrenoble, France
| | - Zheng Han
- Institut Néel, Centre National de la Recherche Scientifique and Université Grenoble AlpesGrenoble, France
| | - Dipankar Kalita
- Institut Néel, Centre National de la Recherche Scientifique and Université Grenoble AlpesGrenoble, France
| | - Anne Briançon-Marjollet
- Grenoble Alpes, HP2 Laboratory, Institut National de la Santé et de la Recherche Médicale U1042Grenoble, France
| | - Vincent Bouchiat
- Institut Néel, Centre National de la Recherche Scientifique and Université Grenoble AlpesGrenoble, France
| | - Cécile Delacour
- Institut Néel, Centre National de la Recherche Scientifique and Université Grenoble AlpesGrenoble, France
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19
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Minoves M, Morand J, Polak J, Perriot F, Lemarié E, Gonthier B, Menut J, Pépin J, Godin-Ribuot D, Briançon-Marjollet A. A new and economic device for cellular intermittent hypoxia. Archives of Cardiovascular Diseases Supplements 2017. [DOI: 10.1016/s1878-6480(17)30458-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Briançon-Marjollet A, Monneret D, Henri M, Joyeux-Faure M, Totoson P, Cachot S, Faure P, Godin-Ribuot D. Intermittent hypoxia in obese Zucker rats: cardiometabolic and inflammatory effects. Exp Physiol 2016; 101:1432-1442. [DOI: 10.1113/ep085783] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Accepted: 08/30/2016] [Indexed: 12/24/2022]
Affiliation(s)
- Anne Briançon-Marjollet
- Univ Grenoble Alpes; HP2, F-38041 Grenoble Cedex France
- INSERM U1042; F-38041 Grenoble Cedex France
| | - Denis Monneret
- Univ Grenoble Alpes; HP2, F-38041 Grenoble Cedex France
- INSERM U1042; F-38041 Grenoble Cedex France
- CHU Institut de Biologie et Pathologies; F-38043 Grenoble France
| | - Marion Henri
- Univ Grenoble Alpes; HP2, F-38041 Grenoble Cedex France
- INSERM U1042; F-38041 Grenoble Cedex France
| | - Marie Joyeux-Faure
- Univ Grenoble Alpes; HP2, F-38041 Grenoble Cedex France
- INSERM U1042; F-38041 Grenoble Cedex France
| | - Perle Totoson
- Univ Grenoble Alpes; HP2, F-38041 Grenoble Cedex France
- INSERM U1042; F-38041 Grenoble Cedex France
| | - Sandrine Cachot
- Univ Grenoble Alpes; HP2, F-38041 Grenoble Cedex France
- INSERM U1042; F-38041 Grenoble Cedex France
| | - Patrice Faure
- Univ Grenoble Alpes; HP2, F-38041 Grenoble Cedex France
- INSERM U1042; F-38041 Grenoble Cedex France
- CHU Institut de Biologie et Pathologies; F-38043 Grenoble France
| | - Diane Godin-Ribuot
- Univ Grenoble Alpes; HP2, F-38041 Grenoble Cedex France
- INSERM U1042; F-38041 Grenoble Cedex France
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Briançon-Marjollet A, Monneret D, Henri M, Hazane-Puch F, Pepin JL, Faure P, Godin-Ribuot D. Endothelin regulates intermittent hypoxia-induced lipolytic remodelling of adipose tissue and phosphorylation of hormone-sensitive lipase. J Physiol 2016; 594:1727-40. [PMID: 26663321 DOI: 10.1113/jp271321] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Accepted: 12/08/2015] [Indexed: 12/23/2022] Open
Abstract
Obstructive sleep apnoea syndrome is characterized by repetitive episodes of upper airway collapse during sleep resulting in chronic intermittent hypoxia (IH). Obstructive sleep apnoea syndrome, through IH, promotes cardiovascular and metabolic disorders. Endothelin-1 (ET-1) secretion is upregulated by IH, and is able to modulate adipocyte metabolism. Therefore, the present study aimed to characterize the role of ET-1 in the metabolic consequences of IH on adipose tissue in vivo and in vitro. Wistar rats were submitted to 14 days of IH-cycles (30 s of 21% FiO2 and 30 s of 5% FiO2 ; 8 h day(-1) ) or normoxia (air-air cycles) and were treated or not with bosentan, a dual type A and B endothelin receptor (ETA-R and ETB-R) antagonist. Bosentan treatment decreased plasma free fatty acid and triglyceride levels, and inhibited IH-induced lipolysis in adipose tissue. Moreover, IH induced a 2-fold increase in ET-1 transcription and ETA-R expression in adipose tissue that was reversed by bosentan. In 3T3-L1 adipocytes, ET-1 upregulated its own and its ETA-R transcription and this effect was abolished by bosentan. Moreover, ET-1 induced glycerol release and inhibited insulin-induced glucose uptake. Bosentan and BQ123 inhibited these effects. Bosentan also reversed the ET-1-induced phosphorylation of hormone-sensitive lipase (HSL) on Ser(660) . Finally, ET-1-induced lipolysis and HSL phosphorylation were also observed under hypoxia. Altogether, these data suggest that ET-1 is involved in IH-induced lipolysis in Wistar rats, and that upregulation of ET-1 production and ETA-R expression by ET-1 itself under IH could amplify its effects. Moreover, ET-1-induced lipolysis could be mediated through ETA-R and activation of HSL by Ser(660) phosphorylation.
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Affiliation(s)
| | - Denis Monneret
- Université Grenoble Alpes, HP2, Grenoble, France.,INSERM, HP2, U1042, Grenoble, France.,CHU Grenoble, Departement of Biochemistry, Toxicology and Pharmacology, Biology Pole, Grenoble, France.,Present address: Department of Metabolic Biochemistry, La Pitié Salpêtrière-Charles Foix University Hospital (AP-HP), Paris, France
| | - Marion Henri
- Université Grenoble Alpes, HP2, Grenoble, France.,INSERM, HP2, U1042, Grenoble, France
| | - Florence Hazane-Puch
- CHU Grenoble, Departement of Biochemistry, Toxicology and Pharmacology, Biology Pole, Grenoble, France
| | - Jean-Louis Pepin
- Université Grenoble Alpes, HP2, Grenoble, France.,INSERM, HP2, U1042, Grenoble, France.,CHU Grenoble, EFCR Laboratory, Thorax and vessels pole, Grenoble, France
| | - Patrice Faure
- Université Grenoble Alpes, HP2, Grenoble, France.,INSERM, HP2, U1042, Grenoble, France.,CHU Grenoble, Departement of Biochemistry, Toxicology and Pharmacology, Biology Pole, Grenoble, France
| | - Diane Godin-Ribuot
- Université Grenoble Alpes, HP2, Grenoble, France.,INSERM, HP2, U1042, Grenoble, France
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Gras E, Belaidi E, Briançon-Marjollet A, Pépin JL, Arnaud C, Godin-Ribuot D. Endothelin-1 mediates intermittent hypoxia-induced inflammatory vascular remodeling through HIF-1 activation. J Appl Physiol (1985) 2015; 120:437-43. [PMID: 26679613 DOI: 10.1152/japplphysiol.00641.2015] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 12/16/2015] [Indexed: 02/04/2023] Open
Abstract
Obstructive sleep apnea (OSA) is a major risk factor for cardiovascular mortality, and apnea-induced intermittent hypoxia (IH) is known to promote various cardiovascular alterations such as vascular remodeling. However, the mechanisms that underlie IH remain incompletely investigated. We previously demonstrated that the hypoxia-inducible factor-1 (HIF-1) and endothelin-1 (ET-1) are involved in arterial hypertension and myocardial susceptibility to infarction induced by IH. Thus the objective of the present study was to investigate whether both ET-1 and HIF-1 were also involved in the vascular inflammatory remodeling induced by IH. Mice partially deficient for the Hif1α gene (HIF-1α(+/-)) and their wild-type equivalents, as well as C57BL/6J mice, treated or not with bosentan, a dual endothelin receptor antagonist, were exposed to IH or normoxia for 2 wk, 8 h/day. Splenocyte proliferative and secretory capacities, aortic nuclear factor-κB (NF-κB) and HIF-1 activities, and expression of cytokines and intima-media thickness (IMT) were measured. IH induced a systemic and aortic inflammation characterized by an increase in splenocyte proliferative and secretory capacities, aortic NF-κB activity, and cytokine expression in the aortic wall. This was accompanied by an increase in IMT. These modifications were prevented in HIF-1α(+/-) and bosentan-treated mice. The results of this study suggest that ET-1 is a major contributor to the vascular inflammatory remodeling induced by OSA-related IH, probably through HIF-1-dependent activation of NF-κB.
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Affiliation(s)
- Emmanuelle Gras
- Université Grenoble Alpes, Laboratoire HP2, Grenoble, France; INSERM, U1042, Grenoble, France; and
| | - Elise Belaidi
- Université Grenoble Alpes, Laboratoire HP2, Grenoble, France; INSERM, U1042, Grenoble, France; and
| | - Anne Briançon-Marjollet
- Université Grenoble Alpes, Laboratoire HP2, Grenoble, France; INSERM, U1042, Grenoble, France; and
| | - Jean-Louis Pépin
- Université Grenoble Alpes, Laboratoire HP2, Grenoble, France; INSERM, U1042, Grenoble, France; and CHU de Grenoble, Grenoble, France
| | - Claire Arnaud
- Université Grenoble Alpes, Laboratoire HP2, Grenoble, France; INSERM, U1042, Grenoble, France; and
| | - Diane Godin-Ribuot
- Université Grenoble Alpes, Laboratoire HP2, Grenoble, France; INSERM, U1042, Grenoble, France; and
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Briançon-Marjollet A, Weiszenstein M, Henri M, Thomas A, Godin-Ribuot D, Polak J. The impact of sleep disorders on glucose metabolism: endocrine and molecular mechanisms. Diabetol Metab Syndr 2015. [PMID: 25834642 DOI: 10.1186/s13098- 015-0018-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Modern lifestyle has profoundly modified human sleep habits. Sleep duration has shortened over recent decades from 8 to 6.5 hours resulting in chronic sleep deprivation. Additionally, irregular sleep, shift work and travelling across time zones lead to disruption of circadian rhythms and asynchrony between the master hypothalamic clock and pacemakers in peripheral tissues. Furthermore, obstructive sleep apnea syndrome (OSA), which affects 4 - 15% of the population, is not only characterized by impaired sleep architecture but also by repetitive hemoglobin desaturations during sleep. Epidemiological studies have identified impaired sleep as an independent risk factor for all cause of-, as well as for cardiovascular, mortality/morbidity. More recently, sleep abnormalities were causally linked to impairments in glucose homeostasis, metabolic syndrome and Type 2 Diabetes Mellitus (T2DM). This review summarized current knowledge on the metabolic alterations associated with the most prevalent sleep disturbances, i.e. short sleep duration, shift work and OSA. We have focused on various endocrine and molecular mechanisms underlying the associations between inadequate sleep quality, quantity and timing with impaired glucose tolerance, insulin resistance and pancreatic β-cell dysfunction. Of these mechanisms, the role of the hypothalamic-pituitary-adrenal axis, circadian pacemakers in peripheral tissues, adipose tissue metabolism, sympathetic nervous system activation, oxidative stress and whole-body inflammation are discussed. Additionally, the impact of intermittent hypoxia and sleep fragmentation (key components of OSA) on intracellular signaling and metabolism in muscle, liver, fat and pancreas are also examined. In summary, this review provides endocrine and molecular explanations for the associations between common sleep disturbances and the pathogenesis of T2DM.
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Affiliation(s)
- Anne Briançon-Marjollet
- Université Grenoble Alpes, HP2, F-38041 Grenoble, Cedex France.,INSERM U1042, F-38041 Grenoble, Cedex France
| | - Martin Weiszenstein
- Centre for Research on Diabetes, Metabolism and Nutrition, Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Marion Henri
- Université Grenoble Alpes, HP2, F-38041 Grenoble, Cedex France.,INSERM U1042, F-38041 Grenoble, Cedex France
| | - Amandine Thomas
- Université Grenoble Alpes, HP2, F-38041 Grenoble, Cedex France.,INSERM U1042, F-38041 Grenoble, Cedex France
| | - Diane Godin-Ribuot
- Université Grenoble Alpes, HP2, F-38041 Grenoble, Cedex France.,INSERM U1042, F-38041 Grenoble, Cedex France
| | - Jan Polak
- Centre for Research on Diabetes, Metabolism and Nutrition, Third Faculty of Medicine, Charles University, Prague, Czech Republic.,2nd Internal Medicine Department, University Hospital Kralovske Vinohrady, Prague, Czech Republic.,Sports Medicine Department, Third Faculty of Medicine, Charles University in Prague, Ruska 87, Praha 10, 100 00 Czech Republic
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Briançon-Marjollet A, Weiszenstein M, Henri M, Thomas A, Godin-Ribuot D, Polak J. The impact of sleep disorders on glucose metabolism: endocrine and molecular mechanisms. Diabetol Metab Syndr 2015; 7:25. [PMID: 25834642 PMCID: PMC4381534 DOI: 10.1186/s13098-015-0018-3] [Citation(s) in RCA: 131] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2014] [Accepted: 03/05/2015] [Indexed: 12/11/2022] Open
Abstract
Modern lifestyle has profoundly modified human sleep habits. Sleep duration has shortened over recent decades from 8 to 6.5 hours resulting in chronic sleep deprivation. Additionally, irregular sleep, shift work and travelling across time zones lead to disruption of circadian rhythms and asynchrony between the master hypothalamic clock and pacemakers in peripheral tissues. Furthermore, obstructive sleep apnea syndrome (OSA), which affects 4 - 15% of the population, is not only characterized by impaired sleep architecture but also by repetitive hemoglobin desaturations during sleep. Epidemiological studies have identified impaired sleep as an independent risk factor for all cause of-, as well as for cardiovascular, mortality/morbidity. More recently, sleep abnormalities were causally linked to impairments in glucose homeostasis, metabolic syndrome and Type 2 Diabetes Mellitus (T2DM). This review summarized current knowledge on the metabolic alterations associated with the most prevalent sleep disturbances, i.e. short sleep duration, shift work and OSA. We have focused on various endocrine and molecular mechanisms underlying the associations between inadequate sleep quality, quantity and timing with impaired glucose tolerance, insulin resistance and pancreatic β-cell dysfunction. Of these mechanisms, the role of the hypothalamic-pituitary-adrenal axis, circadian pacemakers in peripheral tissues, adipose tissue metabolism, sympathetic nervous system activation, oxidative stress and whole-body inflammation are discussed. Additionally, the impact of intermittent hypoxia and sleep fragmentation (key components of OSA) on intracellular signaling and metabolism in muscle, liver, fat and pancreas are also examined. In summary, this review provides endocrine and molecular explanations for the associations between common sleep disturbances and the pathogenesis of T2DM.
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Affiliation(s)
- Anne Briançon-Marjollet
- />Université Grenoble Alpes, HP2, F-38041 Grenoble, Cedex France
- />INSERM U1042, F-38041 Grenoble, Cedex France
| | - Martin Weiszenstein
- />Centre for Research on Diabetes, Metabolism and Nutrition, Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Marion Henri
- />Université Grenoble Alpes, HP2, F-38041 Grenoble, Cedex France
- />INSERM U1042, F-38041 Grenoble, Cedex France
| | - Amandine Thomas
- />Université Grenoble Alpes, HP2, F-38041 Grenoble, Cedex France
- />INSERM U1042, F-38041 Grenoble, Cedex France
| | - Diane Godin-Ribuot
- />Université Grenoble Alpes, HP2, F-38041 Grenoble, Cedex France
- />INSERM U1042, F-38041 Grenoble, Cedex France
| | - Jan Polak
- />Centre for Research on Diabetes, Metabolism and Nutrition, Third Faculty of Medicine, Charles University, Prague, Czech Republic
- />2nd Internal Medicine Department, University Hospital Kralovske Vinohrady, Prague, Czech Republic
- />Sports Medicine Department, Third Faculty of Medicine, Charles University in Prague, Ruska 87, Praha 10, 100 00 Czech Republic
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Briançon-Marjollet A, Henri M, Pépin JL, Lemarié E, Lévy P, Tamisier R. Altered in vitro endothelial repair and monocyte migration in obstructive sleep apnea: implication of VEGF and CRP. Sleep 2014; 37:1825-32. [PMID: 25364078 DOI: 10.5665/sleep.4180] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
STUDY OBJECTIVES Although obstructive sleep apnea (OSA) causes cardiovascular morbidities through atherosclerosis induced by inflammation and endothelial dysfunction, OSA patients exhibit elevated plasma vascular endothelial growth factor (VEGF), which may represent an adaptive response to intermittent hypoxia. The aims of this study were to investigate whether in vitro endothelial wound healing and monocyte migration are affected by patient serum, and to determine the implication of circulating factors (VEGF and C-reactive protein). PATIENTS Serum was collected from healthy controls (HC), "healthy" OSA, and metabolic syndrome (MS) patients with or without OSA. MEASUREMENTS AND RESULTS Along with the presence of OSA and/or MS, both VEGF and hsCRP were significantly elevated in patient serum. Their specific role was tested with blocking antibodies on primary endothelial cells for wound healing assay and on human monocytes for migration assay. Endothelial wound healing was reduced with OSA compared to HC serum, and even more significantly using MS+OSA patient serum. Altered wound healing with OSA serum was unmasked when blocking VEGF and restored when blocking CRP. Monocyte migration was activated with OSA serum, and further enhanced by MS+OSA patient serum. Blocking CRP in serum inhibited this migration. CONCLUSIONS Serum from OSA patient alters in vitro endothelial cell repair function and activates monocyte migration; this is further aggravated with the presence of metabolic syndrome. These effects are partly driven by VEGF and CRP, suggesting an unfavorable balance between the pro healing (VEGF) and pro injury (CRP) factors that may promote vascular injury in OSA with and without metabolic syndrome.
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Affiliation(s)
- Anne Briançon-Marjollet
- Univ Grenoble Alpes, HP2, F-38000 Grenoble, France ; INSERM U1042, HP2, F-38000 Grenoble, France
| | - Marion Henri
- Univ Grenoble Alpes, HP2, F-38000 Grenoble, France ; INSERM U1042, HP2, F-38000 Grenoble, France
| | - Jean-Louis Pépin
- Univ Grenoble Alpes, HP2, F-38000 Grenoble, France ; INSERM U1042, HP2, F-38000 Grenoble, France ; CHU de Grenoble, HP2, F-38000 Grenoble, France
| | - Emeline Lemarié
- Univ Grenoble Alpes, HP2, F-38000 Grenoble, France ; INSERM U1042, HP2, F-38000 Grenoble, France
| | - Patrick Lévy
- Univ Grenoble Alpes, HP2, F-38000 Grenoble, France ; INSERM U1042, HP2, F-38000 Grenoble, France ; CHU de Grenoble, HP2, F-38000 Grenoble, France
| | - Renaud Tamisier
- Univ Grenoble Alpes, HP2, F-38000 Grenoble, France ; INSERM U1042, HP2, F-38000 Grenoble, France ; CHU de Grenoble, HP2, F-38000 Grenoble, France
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26
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Affiliation(s)
- Anne Briançon-Marjollet
- Univ Grenoble Alpes, HP2, Grenoble Cedex F-38041, France; INSERM U1042, Grenoble Cedex F-38041, France.
| | - Jean-Louis Pépin
- Univ Grenoble Alpes, HP2, Grenoble Cedex F-38041, France; INSERM U1042, Grenoble Cedex F-38041, France
| | - J Woodrow Weiss
- Division of Pulmonary Critical Care and Sleep Medicine, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Patrick Lévy
- Univ Grenoble Alpes, HP2, Grenoble Cedex F-38041, France; INSERM U1042, Grenoble Cedex F-38041, France
| | - Renaud Tamisier
- Univ Grenoble Alpes, HP2, Grenoble Cedex F-38041, France; INSERM U1042, Grenoble Cedex F-38041, France
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Bellanger JM, Estrach S, Schmidt S, Briançon-Marjollet A, Zugasti O, Fromont S, Debant A. Different regulation of the Trio Dbl-Homology domains by their associated PH domains. Biol Cell 2012; 95:625-34. [PMID: 14720465 DOI: 10.1016/j.biolcel.2003.10.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Guanine nucleotide exchange factors for Rho-GTPases (Rho-GEFs) invariably share a catalytic Dbl-Homology (DH) domain associated with a Pleckstrin Homology (PH) domain, whose function in Rho-GEF activation is not well understood. Trio is the first member of an emerging family of Dbl proteins containing two Rho-GEF domains (GEFD1 and GEFD2). TrioGEFD1 activates the GTPases RhoG and Rac1, while TrioGEFD2 acts on RhoA. In this study, we have investigated the roles of the two PH domains of Trio in Rho-GEF activity. We show that TrioPH1 is required for GEFD1-mediated induction of actin cytoskeleton remodeling and JNK activation. TrioPH1 is involved both in the catalytic activity and in the subcellular localization of its associated DH domain, by acting as a cytoskeletal targeting signal. Moreover, TrioPH1 in association with DH2 activates the JNK pathway, by an unknown mechanism independent of DH2 catalytic activity. TrioPH2 does not behave as a targeting module in intact cells. TrioPH2 inhibits DH2-dependent stress fiber formation, which correlates with the TrioPH2-mediated inhibition of DH2 GEF activity. In addition, expression in the neuron-like PC12 cell line of the intact Trio protein deleted of each PH domain shows that only TrioPH1 is required for Trio-induced neurite outgrowth. Taken together, these data demonstrate that the two PH domains play a different role in the control of Trio Rho-GEF function.
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Affiliation(s)
- J-M Bellanger
- CRBM-CNRS, FRE 2593 1919, route de Mende, 34293 Montpellier Cédex 5, France
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Abstract
BACKGROUND INFORMATION The large family of GEFs (guanine nucleotide-exchange factors) for Rho GTPases activate the GTPases by accelerating their GDP/GTP exchange. The multidomain protein Trio is the founding member of an intriguing subfamily of Rho-GEFs exhibiting two Rho-GEF and numerous additional domains. The members of the Trio family play an important role in neuronal physiology, and their structural organization is very well conserved through evolution. It has previously been shown that all the members, except mammalian Trio, display several isoforms, the functions of which have been well established. RESULTS In this study, we have identified, by a combination of different approaches, novel Trio isoforms that have been generated by alternative splicing, giving rise to proteins that exhibit one or two Rho-GEF domains (GEFDs). These isoforms are specifically expressed in the nervous system, at a higher level than the full-length Trio, which is ubiquitously expressed. In addition, we show that all the GEFD1-containing isoforms induce neurite outgrowth in neuroblastoma cells. CONCLUSIONS We have identified neuronal specific isoforms of Trio which could be essential for Trio function in neuronal morphology.
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Briançon-Marjollet A, Balenci L, Fernandez M, Estève F, Honnorat J, Farion R, Beaumont M, Barbier E, Rémy C, Baudier J. NG2-expressing glial precursor cells are a new potential oligodendroglioma cell initiating population in N-ethyl-N-nitrosourea-induced gliomagenesis. Carcinogenesis 2010; 31:1718-25. [PMID: 20651032 DOI: 10.1093/carcin/bgq154] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Gliomas are the most common primary brain tumor affecting human adults and remain a therapeutic challenge because cells of origin are still unknown. Here, we investigated the cellular origin of low-grade gliomas in a rat model based on transplacental exposure to N-ethyl-N-nitrosourea (ENU). Longitudinal magnetic resonance imaging coupled to immunohistological and immunocytochemical analyses were used to further characterize low-grade rat gliomas at different stages of evolution. We showed that early low-grade gliomas have characteristics of oligodendroglioma-like tumors and exclusively contain NG2-expressing slow dividing precursor cells, which express early markers of oligodendroglial lineage. These tumor-derived precursors failed to fully differentiate into oligodendrocytes and exhibited multipotential abilities in vitro. Moreover, a few glioma NG2+ cells are resistant to radiotherapy and may be responsible for tumor recurrence, frequently observed in humans. Overall, these findings suggest that transformed multipotent NG2 glial precursor cell may be a potential cell of origin in the genesis of rat ENU-induced oligodendroglioma-like tumors. This work may open up new perspectives for understanding biology of human gliomas.
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Nawabi H, Briançon-Marjollet A, Clark C, Sanyas I, Takamatsu H, Okuno T, Kumanogoh A, Bozon M, Takeshima K, Yoshida Y, Moret F, Abouzid K, Castellani V. A midline switch of receptor processing regulates commissural axon guidance in vertebrates. Genes Dev 2010; 24:396-410. [PMID: 20159958 DOI: 10.1101/gad.542510] [Citation(s) in RCA: 129] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Commissural axon guidance requires complex modulations of growth cone sensitivity to midline-derived cues, but underlying mechanisms in vertebrates remain largely unknown. By using combinations of ex vivo and in vivo approaches, we uncovered a molecular pathway controlling the gain of response to a midline repellent, Semaphorin3B (Sema3B). First, we provide evidence that Semaphorin3B/Plexin-A1 signaling participates in the guidance of commissural projections at the vertebrate ventral midline. Second, we show that, at the precrossing stage, commissural neurons synthesize the Neuropilin-2 and Plexin-A1 Semaphorin3B receptor subunits, but Plexin-A1 expression is prevented by a calpain1-mediated processing, resulting in silencing commissural responsiveness. Third, we report that, during floor plate (FP) in-growth, calpain1 activity is suppressed by local signals, allowing Plexin-A1 accumulation in the growth cone and sensitization to Sema3B. Finally, we show that the FP cue NrCAM mediates the switch of Plexin-A1 processing underlying growth cone sensitization to Sema3B. This reveals pathway-dependent modulation of guidance receptor processing as a novel mechanism for regulating guidance decisions at intermediate targets.
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Affiliation(s)
- Homaira Nawabi
- University of Lyon, University of Lyon 1, Claude Bernard Lyon1, CGMC, UMR, CNRS 5534, F-69000 Lyon, France
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Salinas S, Briançon-Marjollet A, Bossis G, Lopez MA, Piechaczyk M, Jariel-Encontre I, Debant A, Hipskind RA. SUMOylation regulates nucleo-cytoplasmic shuttling of Elk-1. ACTA ACUST UNITED AC 2004; 165:767-73. [PMID: 15210726 PMCID: PMC2172397 DOI: 10.1083/jcb.200310136] [Citation(s) in RCA: 81] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The transcription factor Elk-1 is a nuclear target of mitogen-activated protein kinases and regulates immediate early gene activation by extracellular signals. We show that Elk-1 is also conjugated to SUMO on either lysines 230, 249, or 254. Mutation of all three sites is necessary to fully block SUMOylation in vitro and in vivo. This Elk-1 mutant, Elk-1(3R), shuttles more rapidly to nuclei of Balb/C cells fused to transfected HeLa cells. Coexpression of SUMO-1 or -2 strongly reduces shuttling by Elk-1 without affecting that of Elk-1(3R), indicating that SUMOylation regulates nuclear retention of Elk-1. Accordingly, overexpression of Elk-1(3R) in PC12 cells, where cytoplasmic relocalization of Elk-1 has been linked to differentiation, enhances neurite extension relative to Elk-1. The effect of Elk-1, but not of the 3R mutant, was blocked upon cotransfection with SUMO-1 or -2 and enhanced by coexpression with mutant Ubc-9. Thus, SUMO conjugation is a novel regulator of Elk-1 function through the control of its nuclear-cytoplasmic shuttling.
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Affiliation(s)
- Sara Salinas
- Institut de Genetique Moleculaire de Montpellier, 34293 Montpellier, Cedex 05, France
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