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Leroux A, Roque M, Casas E, Leng J, Guibert C, L'Azou B, Oliveira H, Amédée J, Paiva Dos Santos B. The effect of CGRP and SP and the cell signaling dialogue between sensory neurons and endothelial cells. Biol Res 2024; 57:65. [PMID: 39261966 PMCID: PMC11389267 DOI: 10.1186/s40659-024-00538-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Accepted: 08/19/2024] [Indexed: 09/13/2024] Open
Abstract
Increasing evidences demonstrate the role of sensory innervation in bone metabolism, remodeling and repair, however neurovascular coupling in bone is rarely studied. Using microfluidic devices as an indirect co-culture model to mimic in vitro the physiological scenario of innervation, our group demonstrated that sensory neurons (SNs) were able to regulate the extracellular matrix remodeling by endothelial cells (ECs), in particular through sensory neuropeptides, i.e. calcitonin gene-related peptide (CGRP) and substance P (SP). Nonetheless, still little is known about the cell signaling pathways and mechanism of action in neurovascular coupling. Here, in order to characterize the communication between SNs and ECs at molecular level, we evaluated the effect of SNs and the neuropeptides CGRP and SP on ECs. We focused on different pathways known to play a role on endothelial functions: calcium signaling, p38 and Erk1/2; the control of signal propagation through Cx43; and endothelial functions through the production of nitric oxide (NO). The effect of SNs was evaluated on ECs Ca2+ influx, the expression of Cx43, endothelial nitric oxide synthase (eNOS) and nitric oxide (NO) production, p38, ERK1/2 as well as their phosphorylated forms. In addition, the role of CGRP and SP were either analyzed using respective antagonists in the co-culture model, or by adding directly on the ECs monocultures. We show that capsaicin-stimulated SNs induce increased Ca2+ influx in ECs. SNs stimulate the increase of NO production in ECs, probably involving a decrease in the inhibitory eNOS T495 phosphorylation site. The neuropeptide CGRP, produced by SNs, seems to be one of the mediators of this effect in ECs since NO production is decreased in the presence of CGRP antagonist in the co-culture of ECs and SNs, and increased when ECs are stimulated with synthetic CGRP. Taken together, our results suggest that SNs play an important role in the control of the endothelial cell functions through CGRP production and NO signaling pathway.
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Affiliation(s)
- Alice Leroux
- Univ. Bordeaux, INSERM, BIOTIS, Bordeaux, U1026, F-33000, France
| | - Micaela Roque
- Univ. Bordeaux, INSERM, BIOTIS, Bordeaux, U1026, F-33000, France
| | - Elina Casas
- Univ. Bordeaux, INSERM, BIOTIS, Bordeaux, U1026, F-33000, France
| | - Jacques Leng
- Univ. Bordeaux, CNRS, UMR 5258, Solvay, Pessac, LOF, F-33006, France
| | - Christelle Guibert
- INSERM, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, Pessac, F-33604, France
- Univ. Bordeaux, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, Bordeaux, F-33000, France
| | - Beatrice L'Azou
- Univ. Bordeaux, INSERM, BIOTIS, Bordeaux, U1026, F-33000, France
| | - Hugo Oliveira
- Univ. Bordeaux, INSERM, BIOTIS, Bordeaux, U1026, F-33000, France
| | - Joëlle Amédée
- Univ. Bordeaux, INSERM, BIOTIS, Bordeaux, U1026, F-33000, France
| | - Bruno Paiva Dos Santos
- Univ. Bordeaux, INSERM, BIOTIS, Bordeaux, U1026, F-33000, France.
- Univ. Paris Cité, URP2496-BRIO Pathologies Imagerie et Biothérapies Orofaciales, Montrouge, F-92120, France.
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Burboa PC, Gaete PS, Shu P, Araujo PA, Beuve AV, Durán WN, Contreras JE, Lillo MA. Endothelial TRPV4/Cx43 Signaling Complex Regulates Vasomotor Tone in Resistance Arteries. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.07.25.604930. [PMID: 39091840 PMCID: PMC11291137 DOI: 10.1101/2024.07.25.604930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/04/2024]
Abstract
S-nitrosylation of Cx43 gap junction channels critically regulates communication between smooth muscle cells and endothelial cells. This posttranslational modification also induces the opening of undocked Cx43 hemichannels. However, its specific impact on vasomotor regulation remains unclear. Considering the role of endothelial TRPV4 channel activation in promoting vasodilation through nitric oxide (NO) production, we investigated the direct modulation of endothelial Cx43 hemichannels by TRPV4 channel activation. Using the proximity ligation assay, we identify that Cx43 and TRPV4 are found in close proximity in the endothelium of resistance arteries. In primary endothelial cell cultures from resistance arteries (ECs), GSK-induced TRPV4 activation enhances eNOS activity, increases NO production, and opens Cx43 hemichannels via direct S-nitrosylation. Notably, the elevated intracellular Ca2+ levels caused by TRPV4 activation were reduced by blocking Cx43 hemichannels. In ex vivo mesenteric arteries, inhibiting Cx43 hemichannels reduced endothelial hyperpolarization without affecting NO production in ECs, underscoring a critical role of TRPV4/Cx43 signaling in endothelial electrical behavior. We perturbed the proximity of Cx43/TRPV4 by disrupting lipid rafts in ECs using β-cyclodextrin. Under these conditions, hemichannel activity, Ca2+ influx, and endothelial hyperpolarization were blunted upon GSK stimulation. Intravital microscopy of mesenteric arterioles in vivo further demonstrated that inhibiting Cx43 hemichannels activity, NO production and disrupting endothelial integrity reduce TRPV4-induced relaxation. These findings underscore a new pivotal role of Cx43 hemichannel associated with TRPV4 signaling pathway in modulating endothelial electrical behavior and vasomotor tone regulation.
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Affiliation(s)
- Pía C. Burboa
- Department of Pharmacology, Physiology and Neuroscience, Rutgers-New Jersey Medical School, Newark, NJ 07103, U.S.A
| | - Pablo S. Gaete
- Department of Physiology and Membrane Biology, School of Medicine, University of California Davis, Davis, CA, U.S.A
| | - Ping Shu
- Department of Pharmacology, Physiology and Neuroscience, Rutgers-New Jersey Medical School, Newark, NJ 07103, U.S.A
| | - Priscila A. Araujo
- Department of Physiology and Membrane Biology, School of Medicine, University of California Davis, Davis, CA, U.S.A
| | - Annie V. Beuve
- Department of Pharmacology, Physiology and Neuroscience, Rutgers-New Jersey Medical School, Newark, NJ 07103, U.S.A
| | - Walter N. Durán
- Department of Pharmacology, Physiology and Neuroscience, Rutgers-New Jersey Medical School, Newark, NJ 07103, U.S.A
| | - Jorge E. Contreras
- Department of Physiology and Membrane Biology, School of Medicine, University of California Davis, Davis, CA, U.S.A
| | - Mauricio A. Lillo
- Department of Pharmacology, Physiology and Neuroscience, Rutgers-New Jersey Medical School, Newark, NJ 07103, U.S.A
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Tichauer JE, Lira M, Cerpa W, Orellana JA, Sáez JC, Rovegno M. Inhibition of astroglial hemichannels prevents synaptic transmission decline during spreading depression. Biol Res 2024; 57:39. [PMID: 38867288 PMCID: PMC11167948 DOI: 10.1186/s40659-024-00519-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Accepted: 05/28/2024] [Indexed: 06/14/2024] Open
Abstract
BACKGROUND Spreading depression (SD) is an intriguing phenomenon characterized by massive slow brain depolarizations that affect neurons and glial cells. This phenomenon is repetitive and produces a metabolic overload that increases secondary damage. However, the mechanisms associated with the initiation and propagation of SD are unknown. Multiple lines of evidence indicate that persistent and uncontrolled opening of hemichannels could participate in the pathogenesis and progression of several neurological disorders including acute brain injuries. Here, we explored the contribution of astroglial hemichannels composed of connexin-43 (Cx43) or pannexin-1 (Panx1) to SD evoked by high-K+ stimulation in brain slices. RESULTS Focal high-K+ stimulation rapidly evoked a wave of SD linked to increased activity of the Cx43 and Panx1 hemichannels in the brain cortex, as measured by light transmittance and dye uptake analysis, respectively. The activation of these channels occurs mainly in astrocytes but also in neurons. More importantly, the inhibition of both the Cx43 and Panx1 hemichannels completely prevented high K+-induced SD in the brain cortex. Electrophysiological recordings also revealed that Cx43 and Panx1 hemichannels critically contribute to the SD-induced decrease in synaptic transmission in the brain cortex and hippocampus. CONCLUSIONS Targeting Cx43 and Panx1 hemichannels could serve as a new therapeutic strategy to prevent the initiation and propagation of SD in several acute brain injuries.
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Affiliation(s)
- Juan E Tichauer
- Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Matías Lira
- Departamento de Biología Celular y Molecular, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Waldo Cerpa
- Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Juan A Orellana
- Departamento de Neurología, Escuela de Medicina, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile.
- Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago, Chile.
| | - Juan C Sáez
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile.
- Instituto de Neurociencias, Centro Interdisciplinario de Neurociencias de Valparaíso, Universidad de Valparaíso, Valparaíso, Chile.
| | - Maximiliano Rovegno
- Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile.
- Centro Interdisciplinario de Neurociencias, Pontificia Universidad Católica de Chile, Santiago, Chile.
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Kang SU, Kim HJ, Ma S, Oh DY, Jang JY, Seo C, Lee YS, Kim CH. Liquid plasma promotes angiogenesis through upregulation of endothelial nitric oxide synthase-induced extracellular matrix metabolism: potential applications of liquid plasma for vascular injuries. Cell Commun Signal 2024; 22:138. [PMID: 38374138 PMCID: PMC10875778 DOI: 10.1186/s12964-023-01412-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 11/25/2023] [Indexed: 02/21/2024] Open
Abstract
BACKGROUND Applications of nonthermal plasma have expanded beyond the biomedical field to include antibacterial, anti-inflammatory, wound healing, and tissue regeneration. Plasma enhances epithelial cell repair; however, the potential damage to deep tissues and vascular structures remains under investigation. RESULT This study assessed whether liquid plasma (LP) increased nitric oxide (NO) production in human umbilical vein endothelial cells by modulating endothelial NO synthase (eNOS) phosphorylation and potential signaling pathways. First, we developed a liquid plasma product and confirmed the angiogenic effect of LP using the Matrigel plug assay. We found that the NO content increased in plasma-treated water. NO in plasma-treated water promoted cell migration and angiogenesis in scratch and tube formation assays via vascular endothelial growth factor mRNA expression. In addition to endothelial cell proliferation and migration, LP influenced extracellular matrix metabolism and matrix metalloproteinase activity. These effects were abolished by treatment with NG-L-monomethyl arginine, a specific inhibitor of NO synthase. Furthermore, we investigated the signaling pathways mediating the phosphorylation and activation of eNOS in LP-treated cells and the role of LKB1-adenosine monophosphate-activated protein kinase in signaling. Downregulation of adenosine monophosphate-activated protein kinase by siRNA partially inhibited LP-induced eNOS phosphorylation, angiogenesis, and migration. CONCLUSION The present study suggests that LP treatment may be a novel strategy for promoting angiogenesis in vascular damage. Video Abstract.
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Affiliation(s)
- Sung Un Kang
- Department of Otolaryngology, Department of Molecular Science and Technology, Ajou University School of Medicine, 164, World cup-ro, Yeongtong-Gu, Suwon, 443-380, Republic of Korea
| | - Haeng Jun Kim
- Department of Otolaryngology, Department of Molecular Science and Technology, Ajou University School of Medicine, 164, World cup-ro, Yeongtong-Gu, Suwon, 443-380, Republic of Korea
| | - Sukhwal Ma
- Medical Accelerator Research Team, Korea Institute of Radiological & Medical Sciences (KIRAMS), 75 Nowonro, Nowon-gu, Seoul, 01812, South Korea
| | - Doo-Yi Oh
- Department of Otolaryngology, Department of Molecular Science and Technology, Ajou University School of Medicine, 164, World cup-ro, Yeongtong-Gu, Suwon, 443-380, Republic of Korea
| | - Jeon Yeob Jang
- Department of Otolaryngology, Department of Molecular Science and Technology, Ajou University School of Medicine, 164, World cup-ro, Yeongtong-Gu, Suwon, 443-380, Republic of Korea
| | - Chorong Seo
- Department of Otolaryngology, Department of Molecular Science and Technology, Ajou University School of Medicine, 164, World cup-ro, Yeongtong-Gu, Suwon, 443-380, Republic of Korea
| | - Yun Sang Lee
- Department of Otolaryngology, Department of Molecular Science and Technology, Ajou University School of Medicine, 164, World cup-ro, Yeongtong-Gu, Suwon, 443-380, Republic of Korea
| | - Chul-Ho Kim
- Department of Otolaryngology, Department of Molecular Science and Technology, Ajou University School of Medicine, 164, World cup-ro, Yeongtong-Gu, Suwon, 443-380, Republic of Korea.
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