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Ruperti F, Becher I, Stokkermans A, Wang L, Marschlich N, Potel C, Maus E, Stein F, Drotleff B, Schippers KJ, Nickel M, Prevedel R, Musser JM, Savitski MM, Arendt D. Molecular profiling of sponge deflation reveals an ancient relaxant-inflammatory response. Curr Biol 2024; 34:361-375.e9. [PMID: 38181793 DOI: 10.1016/j.cub.2023.12.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 11/03/2023] [Accepted: 12/07/2023] [Indexed: 01/07/2024]
Abstract
A hallmark of animals is the coordination of whole-body movement. Neurons and muscles are central to this, yet coordinated movements also exist in sponges that lack these cell types. Sponges are sessile animals with a complex canal system for filter-feeding. They undergo whole-body movements resembling "contractions" that lead to canal closure and water expulsion. Here, we combine live 3D optical coherence microscopy, pharmacology, and functional proteomics to elucidate the sequence and detail of shape changes, the tissues and molecular physiology involved, and the control of these movements. Morphometric analysis and targeted perturbation suggest that the movement is driven by the relaxation of actomyosin stress fibers in epithelial canal cells, which leads to whole-body deflation via collapse of the incurrent and expansion of the excurrent canal system. Thermal proteome profiling and quantitative phosphoproteomics confirm the control of cellular relaxation by an Akt/NO/PKG/PKA pathway. Agitation-induced deflation leads to differential phosphorylation of proteins forming epithelial cell junctions, implying their mechanosensitive role. Unexpectedly, untargeted metabolomics detect a concomitant decrease in antioxidant molecules during deflation, reflecting an increase in reactive oxygen species. Together with the secretion of proteinases, cytokines, and granulin, this indicates an inflammation-like state of the deflating sponge reminiscent of vascular endothelial cells experiencing oscillatory shear stress. These results suggest the conservation of an ancient relaxant-inflammatory response of perturbed fluid-carrying systems in animals and offer a possible mechanism for whole-body coordination through diffusible paracrine signals and mechanotransduction.
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Affiliation(s)
- Fabian Ruperti
- Developmental Biology Unit, European Molecular Biology Laboratory, 69117 Heidelberg, Germany; Collaboration for joint Ph.D. degree between EMBL and Heidelberg University, Faculty of Biosciences 69117 Heidelberg, Germany
| | - Isabelle Becher
- Genome Biology Unit, European Molecular Biology Laboratory, 69117 Heidelberg, Germany
| | | | - Ling Wang
- Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, 69117 Heidelberg, Germany.
| | - Nick Marschlich
- Developmental Biology Unit, European Molecular Biology Laboratory, 69117 Heidelberg, Germany; Centre for Organismal Studies (COS), University of Heidelberg, 69120 Heidelberg, Germany
| | - Clement Potel
- Genome Biology Unit, European Molecular Biology Laboratory, 69117 Heidelberg, Germany
| | - Emanuel Maus
- Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, 69117 Heidelberg, Germany
| | - Frank Stein
- Proteomics Core Facility, European Molecular Biology Laboratory, 69117 Heidelberg, Germany
| | - Bernhard Drotleff
- Metabolomics Core Facility, European Molecular Biology Laboratory, 69117 Heidelberg, Germany
| | - Klaske J Schippers
- Developmental Biology Unit, European Molecular Biology Laboratory, 69117 Heidelberg, Germany
| | - Michael Nickel
- Bionic consulting Dr. Michael Nickel, 71686 Remseck am Neckar, Germany
| | - Robert Prevedel
- Developmental Biology Unit, European Molecular Biology Laboratory, 69117 Heidelberg, Germany; Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, 69117 Heidelberg, Germany
| | - Jacob M Musser
- Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT 06520, USA.
| | - Mikhail M Savitski
- Genome Biology Unit, European Molecular Biology Laboratory, 69117 Heidelberg, Germany; Proteomics Core Facility, European Molecular Biology Laboratory, 69117 Heidelberg, Germany.
| | - Detlev Arendt
- Developmental Biology Unit, European Molecular Biology Laboratory, 69117 Heidelberg, Germany; Centre for Organismal Studies (COS), University of Heidelberg, 69120 Heidelberg, Germany.
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2
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Ruperti F, Becher I, Stokkermans A, Wang L, Marschlich N, Potel C, Maus E, Stein F, Drotleff B, Schippers K, Nickel M, Prevedel R, Musser JM, Savitski MM, Arendt D. Molecular profiling of sponge deflation reveals an ancient relaxant-inflammatory response. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.02.551666. [PMID: 37577507 PMCID: PMC10418225 DOI: 10.1101/2023.08.02.551666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
A hallmark of animals is the coordination of whole-body movement. Neurons and muscles are central to this, yet coordinated movements also exist in sponges that lack these cell types. Sponges are sessile animals with a complex canal system for filter-feeding. They undergo whole-body movements resembling "contractions" that lead to canal closure and water expulsion. Here, we combine 3D optical coherence microscopy, pharmacology, and functional proteomics to elucidate anatomy, molecular physiology, and control of these movements. We find them driven by the relaxation of actomyosin stress fibers in epithelial canal cells, which leads to whole-body deflation via collapse of the incurrent and expansion of the excurrent system, controlled by an Akt/NO/PKG/A pathway. A concomitant increase in reactive oxygen species and secretion of proteinases and cytokines indicate an inflammation-like state reminiscent of vascular endothelial cells experiencing oscillatory shear stress. This suggests an ancient relaxant-inflammatory response of perturbed fluid-carrying systems in animals.
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Affiliation(s)
- Fabian Ruperti
- Developmental Biology Unit, European Molecular Biology Laboratory, 69117 Heidelberg, Germany
- Collaboration for joint Ph.D. degree between EMBL and Heidelberg University, Faculty of Biosciences 69117 Heidelberg, Germany
| | - Isabelle Becher
- Genome Biology Unit, European Molecular Biology Laboratory, 69117 Heidelberg, Germany
| | | | - Ling Wang
- Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, 69117 Heidelberg, Germany
| | - Nick Marschlich
- Developmental Biology Unit, European Molecular Biology Laboratory, 69117 Heidelberg, Germany
- Centre for Organismal Studies (COS), University of Heidelberg, 69120 Heidelberg, Germany
| | - Clement Potel
- Genome Biology Unit, European Molecular Biology Laboratory, 69117 Heidelberg, Germany
| | - Emanuel Maus
- Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, 69117 Heidelberg, Germany
| | - Frank Stein
- Proteomics Core Facility, European Molecular Biology Laboratory, 69117 Heidelberg, Germany
| | - Bernhard Drotleff
- Metabolomics Core Facility, European Molecular Biology Laboratory, 69117 Heidelberg, Germany
| | - Klaske Schippers
- Developmental Biology Unit, European Molecular Biology Laboratory, 69117 Heidelberg, Germany
| | - Michael Nickel
- Bionic Consulting Dr. Michael Nickel, 71686 Remseck am Neckar, Germany
| | - Robert Prevedel
- Developmental Biology Unit, European Molecular Biology Laboratory, 69117 Heidelberg, Germany
- Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, 69117 Heidelberg, Germany
| | - Jacob M Musser
- Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT 06520, USA
| | - Mikhail M Savitski
- Genome Biology Unit, European Molecular Biology Laboratory, 69117 Heidelberg, Germany
- Proteomics Core Facility, European Molecular Biology Laboratory, 69117 Heidelberg, Germany
| | - Detlev Arendt
- Developmental Biology Unit, European Molecular Biology Laboratory, 69117 Heidelberg, Germany
- Centre for Organismal Studies (COS), University of Heidelberg, 69120 Heidelberg, Germany
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3
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Wu A, Lu J, Zhong G, Lu L, Qu Y, Zhang C. Xanthotoxin (8-methoxypsoralen): A review of its chemistry, pharmacology, pharmacokinetics, and toxicity. Phytother Res 2022; 36:3805-3832. [PMID: 35913174 DOI: 10.1002/ptr.7577] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 06/30/2022] [Accepted: 07/14/2022] [Indexed: 11/11/2022]
Abstract
Xanthotoxin (XAT) is a natural furanocoumarins, a bioactive psoralen isolated from the fruit of the Rutaceae plant Pepper, which has received increasing attention in recent years due to its wide source and low cost. By collecting and compiling literature on XAT, the results show that XAT exhibits significant activity in the treatment of various diseases, including neuroprotection, skin repair, osteoprotection, organ protection, anticancer, antiinflammatory, antioxidative stress and antibacterial. In this paper, we review the pharmacological activity and potential molecular mechanisms of XAT for the treatment of related diseases. The data suggest that XAT can mechanistically induce ROS production and promote apoptosis through mitochondrial or endoplasmic reticulum pathways, regulate NF-κB, MAPK, JAK/STAT, Nrf2/HO-1, MAPK, AKT/mTOR, and ERK1/2 signaling pathways to exert pharmacological effects. In addition, the pharmacokinetics properties and toxicity of XAT are discussed in this paper, further elucidating the relationship between structure and efficacy. It is worth noting that data from clinical studies of XAT are still scarce, limiting the use of XAT in the clinic, and in the future, more in-depth studies are needed to determine the clinical efficacy of XAT.
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Affiliation(s)
- Anxin Wu
- College Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, PR China.,State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, PR China
| | - Jing Lu
- College Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, PR China.,State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, PR China
| | - Guofeng Zhong
- College Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, PR China.,State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, PR China
| | - Ling Lu
- Chengdu University of Technology, Chengdu, PR China
| | - Yan Qu
- College Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, PR China.,State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, PR China
| | - Chen Zhang
- College Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, PR China.,State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, PR China
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4
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G-Protein-Coupled Estrogen Receptor Expression in Rat Uterine Artery Is Increased by Pregnancy and Induces Dilation in a Ca2+ and ERK1/2 Dependent Manner. Int J Mol Sci 2022; 23:ijms23115996. [PMID: 35682675 PMCID: PMC9180712 DOI: 10.3390/ijms23115996] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 05/23/2022] [Accepted: 05/23/2022] [Indexed: 02/04/2023] Open
Abstract
Increasing levels of estrogens across gestation are partly responsible for the physiological adaptations of the maternal vasculature to pregnancy. The G protein-coupled estrogen receptor (GPER) mediates acute vasorelaxing effects in the uterine vasculature, which may contribute to the regulation of uteroplacental blood flow. The aim of this study was to investigate whether GPER expression and vasorelaxation may occur following pregnancy. Elucidation of the functional signalling involved was also investigated. Radial uterine and third-order mesenteric arteries were isolated from non-pregnant (NP) and pregnant rats (P). GPER mRNA levels were determined and—concentration–response curve to the GPER-specific agonist, G1 (10−10–10−6 M), was assessed in arteries pre-constricted with phenylephrine. In uterine arteries, GPER mRNA expression was significantly increased and vasorelaxation to G1 was significantly enhanced in P compared with NP rats. Meanwhile, in mesenteric arteries, there was a similar order of magnitude in NP and P rats. Inhibition of L-type calcium channels and extracellular signal-regulated kinases 1/2 significantly reduced vasorelaxation triggered by G1 in uterine arteries. Increased GPER expression and GPER-mediated vasorelaxation are associated with the advancement of gestation in uterine arteries. The modulation of GPER is exclusive to uterine arteries, thus suggesting a physiological contribution of GPER toward the regulation of uteroplacental blood flow during pregnancy.
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Solone XKV, Caldara AL, Wells B, Qiao H, Wade LR, Salerno JC, Helms KA, Smith KER, McMurry JL, Chrestensen CA. MAP kinases differentially bind and phosphorylate NOS3 via two unique NOS3 sites. FEBS Open Bio 2022; 12:1075-1086. [PMID: 35182051 PMCID: PMC9063426 DOI: 10.1002/2211-5463.13384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 01/12/2022] [Accepted: 02/17/2022] [Indexed: 11/25/2022] Open
Abstract
Nitric oxide synthase 3 (NOS3) is a major vasoprotective enzyme that catalyzes the conversion of l-arginine to nitric oxide (NO) in response to a significant number of signaling pathways. Here, we provide evidence that NOS3 interactions with MAP kinases have physiological relevance. Binding interactions of NOS3 with c-Jun N-terminal kinase (JNK1α1 ), p38α, and ERK2 were characterized using optical biosensing with full-length NOS3 and NOS3 specific peptides and phosphopeptides. Like p38α and ERK2, JNK1α1 exhibited high-affinity binding to full-length NOS3 (KD 15 nm). Rate constants exhibited fast-on, slow-off binding (kon = 4106 m-1 s-1 ; koff = 6.2 × 10-5 s-1 ). Further analysis using synthetic NOS3 peptides revealed two MAP kinase binding sites unique to NOS3. p38α evinced similar affinity with both NOS3 binding sites. For ERK2 and JNK1α1, the affinity at the two sites differed. However, NOS3 peptides with a phosphate at either S114 or S633 did not meaningfully interact with the kinases. Immunoblotting revealed that each kinase phosphorylated NOS3 with a unique pattern. JNK1α1 predominantly phosphorylated NOS3 at S114, ERK2 at S600, and p38α phosphorylated both residues. In vitro production of NO was unchanged by phosphorylation at these sites. In human microvascular endothelial cells, endogenous interactions of all the MAP kinases with NOS3 were captured using proximity ligation assay in resting cells. Our results underscore the importance of MAP kinase interactions, identifying two unique NOS3 interaction sites with potential for modulation by MAP kinase phosphorylation (S114) and other signaling inputs, like protein kinase A (S633).
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Affiliation(s)
- Xzaviar K. V. Solone
- Department of Molecular & Cellular BiologyKennesaw State UniversityGAUSA
- Present address:
Department of Molecular Genetics and MicrobiologyUniversity of FloridaGainesvilleFLUSA
| | - Amber L. Caldara
- Department of Molecular & Cellular BiologyKennesaw State UniversityGAUSA
| | - Brady Wells
- Department of Chemistry & BiochemistryKennesaw State UniversityGAUSA
| | - Hao Qiao
- Department of Chemistry & BiochemistryKennesaw State UniversityGAUSA
| | - Lydia R. Wade
- Department of Chemistry & BiochemistryKennesaw State UniversityGAUSA
| | - John C. Salerno
- Department of Molecular & Cellular BiologyKennesaw State UniversityGAUSA
| | - Katy A. Helms
- Department of Molecular & Cellular BiologyKennesaw State UniversityGAUSA
- Present address:
Wake Forest Medical CenterWinston‐SalemNCUSA
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Morris G, Walder K, Berk M, Carvalho AF, Marx W, Bortolasci CC, Yung AR, Puri BK, Maes M. Intertwined associations between oxidative and nitrosative stress and endocannabinoid system pathways: Relevance for neuropsychiatric disorders. Prog Neuropsychopharmacol Biol Psychiatry 2022; 114:110481. [PMID: 34826557 DOI: 10.1016/j.pnpbp.2021.110481] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 10/19/2021] [Accepted: 11/21/2021] [Indexed: 12/12/2022]
Abstract
The endocannabinoid system (ECS) appears to regulate metabolic, cardiovascular, immune, gastrointestinal, lung, and reproductive system functions, as well as the central nervous system. There is also evidence that neuropsychiatric disorders are associated with ECS abnormalities as well as oxidative and nitrosative stress pathways. The goal of this mechanistic review is to investigate the mechanisms underlying the ECS's regulation of redox signalling, as well as the mechanisms by which activated oxidative and nitrosative stress pathways may impair ECS-mediated signalling. Cannabinoid receptor (CB)1 activation and upregulation of brain CB2 receptors reduce oxidative stress in the brain, resulting in less tissue damage and less neuroinflammation. Chronically high levels of oxidative stress may impair CB1 and CB2 receptor activity. CB1 activation in peripheral cells increases nitrosative stress and inducible nitric oxide (iNOS) activity, reducing mitochondrial activity. Upregulation of CB2 in the peripheral and central nervous systems may reduce iNOS, nitrosative stress, and neuroinflammation. Nitrosative stress may have an impact on CB1 and CB2-mediated signalling. Peripheral immune activation, which frequently occurs in response to nitro-oxidative stress, may result in increased expression of CB2 receptors on T and B lymphocytes, dendritic cells, and macrophages, reducing the production of inflammatory products and limiting the duration and intensity of the immune and oxidative stress response. In conclusion, high levels of oxidative and nitrosative stress may compromise or even abolish ECS-mediated redox pathway regulation. Future research in neuropsychiatric disorders like mood disorders and deficit schizophrenia should explore abnormalities in these intertwined signalling pathways.
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Affiliation(s)
- Gerwyn Morris
- Deakin University, IMPACT - the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, Australia
| | - Ken Walder
- Deakin University, IMPACT - the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, Australia.
| | - Michael Berk
- Deakin University, IMPACT - the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, Australia; Orygen, Parkville, Victoria, Australia; Centre for Youth Mental Health, The University of Melbourne, Parkville, Victoria, Australia.
| | - Andre F Carvalho
- Deakin University, IMPACT - the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, Australia
| | - Wolf Marx
- Deakin University, IMPACT - the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, Australia.
| | - Chiara C Bortolasci
- Deakin University, IMPACT - the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, Australia.
| | - Alison R Yung
- Deakin University, IMPACT - the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, Australia; Orygen, Parkville, Victoria, Australia; Centre for Youth Mental Health, The University of Melbourne, Parkville, Victoria, Australia; School of Health Science, University of Manchester, UK.
| | - Basant K Puri
- University of Winchester, UK, and C.A.R., Cambridge, UK.
| | - Michael Maes
- Deakin University, IMPACT - the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, Australia; Department of Psychiatry, Faculty of Medicine, King Chulalongkorn Memorial Hospital, Bangkok, Thailand; Department of Psychiatry, Medical University of Plovdiv, Plovdiv, Bulgaria.
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7
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Gong J, Zhang W, Ding L, Zhang M, Zheng S, Ma R, Tang J, Yi W, Xu H, Zhang Y. 4,4'-Dimethoxychalcone regulates redox homeostasis by targeting riboflavin metabolism in Parkinson's disease therapy. Free Radic Biol Med 2021; 174:40-56. [PMID: 34332078 DOI: 10.1016/j.freeradbiomed.2021.07.038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 07/25/2021] [Accepted: 07/27/2021] [Indexed: 02/08/2023]
Abstract
Oxidative stress damage plays a pivotal role in Parkinson's disease (PD) pathogenesis. Previously, we developed a blood brain barrier-penetrating peptide-based "Trojan Horse" strategy to deliver 4,4'-dimethoxychalcone (DMC) for PD therapy and revealed neuroprotective properties of DMC in a PD model; however, the underlying mechanisms remained unclear. Here, we report that DMC attenuated motor impairment, degeneration of DA neurons and α-synuclein aggregation in 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) and exogenous human α-synuclein-induced PD mouse models. Mechanistically, DMC increased the expression of two critical intermediates in riboflavin metabolism: riboflavin kinase (RFK) and its metabolic product, flavin mononucleotide (FMN). We provide the first direct evidence that FMN ameliorated oxidative stress damage and dopaminergic neuron degeneration both in vitro and in vivo and that riboflavin metabolism was required for DMC-mediated neuroprotection. DMC-induced restoration of redox homeostasis was mediated via the activation of protein kinase Cθ (PKCθ) signaling. Together, our findings reveal that DMC may serve as a novel antioxidant in PD intervention and also define a novel mechanism that underlies its therapeutic activity.
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Affiliation(s)
- Junwei Gong
- Institute of Neuroscience and the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, 510260, China
| | - Wenlong Zhang
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China
| | - Liuyan Ding
- Department of Neurology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, China
| | - Mengran Zhang
- Institute of Neuroscience and the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, 510260, China
| | - Shaohui Zheng
- Institute of Neuroscience and the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, 510260, China
| | - Runfang Ma
- Institute of Neuroscience and the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, 510260, China
| | - Junyuan Tang
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation & Molecular Target and Clinical Pharmacology, the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, 511436, China
| | - Wei Yi
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation & Molecular Target and Clinical Pharmacology, the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, 511436, China
| | - Huaxi Xu
- Center for Brain Sciences of the First Affiliated Hospital of Xiamen University, Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, School of Medicine, Xiamen University, Xiamen, 361005, China
| | - Yunlong Zhang
- Institute of Neuroscience and the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, 510260, China.
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8
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Mahmoud M, Mayer M, Cancel LM, Bartosch AM, Mathews R, Tarbell JM. The glycocalyx core protein Glypican 1 protects vessel wall endothelial cells from stiffness-mediated dysfunction and disease. Cardiovasc Res 2021; 117:1592-1605. [PMID: 32647868 PMCID: PMC8152694 DOI: 10.1093/cvr/cvaa201] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 05/22/2020] [Accepted: 07/02/2020] [Indexed: 12/25/2022] Open
Abstract
AIMS Arterial stiffness is an underlying risk factor and a hallmark of cardiovascular diseases. The endothelial cell (EC) glycocalyx is a glycan rich surface layer that plays a key role in protecting against EC dysfunction and vascular disease. However, the mechanisms by which arterial stiffness promotes EC dysfunction and vascular disease are not fully understood, and whether the mechanism involves the protective endothelial glycocalyx is yet to be determined. We hypothesized that endothelial glycocalyx protects the endothelial cells lining the vascular wall from dysfunction and disease in response to arterial stiffness. METHODS AND RESULTS Cells cultured on polyacrylamide (PA) gels of substrate stiffness 10 kPa (mimicking the subendothelial stiffness of aged, unhealthy arteries) showed a significant inhibition of glycocalyx expression compared to cells cultured on softer PA gels (2.5 kPa, mimicking the subendothelial stiffness of young, healthy arteries). Specifically, gene and protein analyses revealed that a glycocalyx core protein Glypican 1 was inhibited in cells cultured on stiff PA gels. These cells had enhanced endothelial cell dysfunction as determined by enhanced cell inflammation (enhanced inflammatory gene expression, monocyte adhesion, and inhibited nitric oxide expression), proliferation, and EndMT. Removal of Glypican 1 using gene-specific silencing with siRNA or gene overexpression using a plasmid revealed that Glypican 1 is required to protect against stiffness-mediated endothelial cell dysfunction. Consistent with this, using a model of age-mediated stiffness, older mice exhibited a reduced expression of Glypican 1 and enhanced endothelial cell dysfunction compared to young mice. Glypican 1 gene deletion in knockout mice (GPC1-/-) exacerbated endothelial dysfunction in young mice, which normally had high endothelial expression, but not in old mice that normally expressed low levels. Endothelial cell dysfunction was exacerbated in young, but not aged, Glypican 1 knockout mice (GPC1-/-). CONCLUSION Arterial stiffness promotes EC dysfunction and vascular disease at least partly through the suppression of the glycocalyx protein Glypican 1. Glypican 1 contributes to the protection against endothelial cell dysfunction and vascular disease in endothelial cells.
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Affiliation(s)
- Marwa Mahmoud
- Department of Biomedical Engineering, The City College of New York, New York, NY, USA
| | - Mariya Mayer
- Department of Biomedical Engineering, The City College of New York, New York, NY, USA
| | - Limary M Cancel
- Department of Biomedical Engineering, The City College of New York, New York, NY, USA
| | - Anne Marie Bartosch
- Department of Pathology and Cell Biology, Columbia University, New York, NY, USA
| | - Rick Mathews
- Oregon Health & Science University, School of Medicine, Portland, OR, USA
| | - John M Tarbell
- Department of Biomedical Engineering, The City College of New York, New York, NY, USA
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9
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Cao LH, Lee HS, Quan ZS, Lee YJ, Jin Y. Vascular Protective Effects of Xanthotoxin and Its Action Mechanism in Rat Aorta and Human Vascular Endothelial Cells. J Vasc Res 2020; 57:313-324. [PMID: 32726786 DOI: 10.1159/000509112] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 06/03/2020] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE Xanthotoxin (XAT) is a linear furanocoumarin mainly extracted from the plants Ammi majus L. XAT has been reported the apoptosis of tumor cells, anti-convulsant, neuroprotective effect, antioxidative activity, and vasorelaxant effects. This study aimed to investigate the vascular protective effects and underlying molecular mechanisms of XAT. METHODS XAT's activity was studied in rat thoracic aortas, isolated with aortic rings, and human umbilical vein endothelial cells (HUVECs). RESULTS XAT induced endothelium-dependent vasodilation in a concentration-dependent manner in the isolated rat thoracic aortas. Removal of endothelium or pretreatment of aortic rings with L-NAME, 1H-[1,2,4]-oxadiazolo-[4,3-a]-quinoxalin-1-one, and wortmannin significantly inhibited XAT-induced relaxation. In addition, treatment with thapsigargin, 2-aminoethyl diphenylborinate, Gd3+, and 4-aminopyridine markedly attenuated the XAT-induced vasorelaxation. XAT increased nitric oxide production and Akt- endothelial NOS (eNOS) phosphorylation in HUVECs. Moreover, XAT attenuated the expression of TNF-α-induced cell adhesion molecules such as intercellular adhesion molecule, vascular cell adhesion molecule-1, and E-selectin. However, this effect was attenuated by the eNOS inhibitors L-NAME and asymmetric dimethylarginine. CONCLUSIONS This study suggests that XAT induces vasorelaxation through the Akt-eNOS-cGMP pathway by activating the KV channel and inhibiting the L-type Ca2+ channel. Furthermore, XAT exerts an inhibitory effect on vascular inflammation, which is correlated with the observed vascular protective effects.
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Affiliation(s)
- Li-Hua Cao
- Department of Pharmacology, Yanbian University Medical College, Jilin, China
| | - Ho Sub Lee
- Hanbang Cardio-Renal Syndrome Research Center, Wonkwang University, Iksan, Republic of Korea.,College of Oriental Medicine and Professional Graduate School of Oriental Medicine, Wonkwang University, Iksan, Republic of Korea
| | - Zhe-Shan Quan
- College of Pharmacy, Yanbian University, Jilin, China
| | - Yun Jung Lee
- Hanbang Cardio-Renal Syndrome Research Center, Wonkwang University, Iksan, Republic of Korea, .,College of Oriental Medicine and Professional Graduate School of Oriental Medicine, Wonkwang University, Iksan, Republic of Korea,
| | - Yu Jin
- Department of Anatomy, Yanbian University Medical College, Jilin, China
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10
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Sher LD, Geddie H, Olivier L, Cairns M, Truter N, Beselaar L, Essop MF. Chronic stress and endothelial dysfunction: mechanisms, experimental challenges, and the way ahead. Am J Physiol Heart Circ Physiol 2020; 319:H488-H506. [PMID: 32618516 DOI: 10.1152/ajpheart.00244.2020] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Although chronic stress is an important risk factor for cardiovascular diseases (CVD) onset, the underlying mechanisms driving such pathophysiological complications remain relatively unknown. Here, dysregulation of innate stress response systems and the effects of downstream mediators are strongly implicated, with the vascular endothelium emerging as a primary target of excessive glucocorticoid and catecholamine action. Therefore, this review article explores the development of stress-related endothelial dysfunction by focusing on the following: 1) assessing the phenomenon of stress and complexities surrounding this notion, 2) discussing mechanistic links between chronic stress and endothelial dysfunction, and 3) evaluating the utility of various preclinical models currently employed to study mechanisms underlying the onset of stress-mediated complications such as endothelial dysfunction. The data reveal that preclinical models play an important role in our efforts to gain an increased understanding of mechanisms underlying stress-mediated endothelial dysfunction. It is our understanding that this provides a good foundation going forward, and we propose that further efforts should be made to 1) more clearly define the concept of stress and 2) standardize protocols of animal models with specific guidelines to better indicate the mental complications that are simulated.
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Affiliation(s)
- Lucien Derek Sher
- Centre for Cardio-Metabolic Research in Africa, Department of Physiological Sciences, Stellenbosch University, Stellenbosch, South Africa
| | - Hannah Geddie
- Centre for Cardio-Metabolic Research in Africa, Department of Physiological Sciences, Stellenbosch University, Stellenbosch, South Africa
| | - Lukas Olivier
- Centre for Cardio-Metabolic Research in Africa, Department of Physiological Sciences, Stellenbosch University, Stellenbosch, South Africa
| | - Megan Cairns
- Centre for Cardio-Metabolic Research in Africa, Department of Physiological Sciences, Stellenbosch University, Stellenbosch, South Africa
| | - Nina Truter
- Centre for Cardio-Metabolic Research in Africa, Department of Physiological Sciences, Stellenbosch University, Stellenbosch, South Africa
| | - Leandrie Beselaar
- Centre for Cardio-Metabolic Research in Africa, Department of Physiological Sciences, Stellenbosch University, Stellenbosch, South Africa
| | - M Faadiel Essop
- Centre for Cardio-Metabolic Research in Africa, Department of Physiological Sciences, Stellenbosch University, Stellenbosch, South Africa
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Salie R, Alsalhin AKH, Marais E, Lochner A. Cardioprotective Effects of Beta3-Adrenergic Receptor (β3-AR) Pre-, Per-, and Post-treatment in Ischemia-Reperfusion. Cardiovasc Drugs Ther 2020; 33:163-177. [PMID: 30729348 DOI: 10.1007/s10557-019-06861-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The β3-AR (beta3-adrenergic receptor) is resistant to short-term agonist-promoted desensitization and delivers a constant intracellular signal, making this receptor a potential target in acute myocardial infarction (AMI). AIM To investigate whether selective modulation of β3-AR prior to or during ischemia and/or reperfusion may be cardioprotective. METHODS Isolated perfused rat hearts were exposed to 35-min regional ischemia (RI) and 60-min reperfusion. The β3-AR agonist (BRL37344, 1 μM) or antagonist (SR59230A, 0.1 μM) was applied: (i) before RI (PreT) or (ii) last 10 min of RI (PerT) or (iii) onset of reperfusion (PostT) or (iv) during both PerT+PostT. Nitric oxide (NO) involvement was assessed, using the NOS inhibitor, L-NAME (50 μM). Endpoints were functional recovery, infarct size (IS), cGMP levels, and Western blot analysis of eNOS, ERKp44/p42, PKB/Akt, and glycogen synthase kinase-3β (GSK-3β). RESULTS Selective treatment with BRL significantly reduced IS. L-NAME abolished BRL-mediated cardioprotection. BRL (PreT) and BRL (PerT) significantly increased cGMP levels (which were reduced by L-NAME) and PKB/Akt phosphorylation. BRL (PostT) produced significantly increased cGMP levels, PKB/Akt, and ERKp44/p42 phosphorylation. BRL (PerT+PostT) caused significant eNOS, PKB/Akt, ERKp44/p42, and GSK-3β phosphorylation. CONCLUSION β3-AR activation by BRL37344 induced significant cardioprotection regardless of the experimental protocol. However, the pattern of intracellular signaling with each BRL treatment differed to some degree and suggests the involvement of cGMP, eNOS, ERK, GSK-3β, and particularly PKB/Akt activation. The data also suggest that clinical application of β3-AR stimulation should preferably be incorporated during late ischemia or/and early reperfusion.
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Affiliation(s)
- Ruduwaan Salie
- Biomedical Research and Innovation Platform, South African Medical Research Council, Building D, Medicina, Francie van Zijl Drive, Parow Valley, Cape Town, Western Cape, South Africa.
- Faculty of Medicine and Health Sciences, Division of Medical Physiology, University of Stellenbosch, PO Box 19063, Cape Town, South Africa.
| | - Aisha Khlani Hassan Alsalhin
- Faculty of Medicine and Health Sciences, Division of Medical Physiology, University of Stellenbosch, PO Box 19063, Cape Town, South Africa
| | - Erna Marais
- Faculty of Medicine and Health Sciences, Division of Medical Physiology, University of Stellenbosch, PO Box 19063, Cape Town, South Africa
| | - Amanda Lochner
- Faculty of Medicine and Health Sciences, Division of Medical Physiology, University of Stellenbosch, PO Box 19063, Cape Town, South Africa
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Jin SW, Pham HT, Choi JH, Lee GH, Han EH, Cho YH, Chung YC, Kim YH, Jeong HG. Impressic Acid, a Lupane-Type Triterpenoid from Acanthopanax koreanum, Attenuates TNF-α-Induced Endothelial Dysfunction via Activation of eNOS/NO Pathway. Int J Mol Sci 2019; 20:ijms20225772. [PMID: 31744135 PMCID: PMC6888592 DOI: 10.3390/ijms20225772] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 11/13/2019] [Accepted: 11/15/2019] [Indexed: 12/18/2022] Open
Abstract
Atherosclerosis is one of the most reported diseases worldwide, and extensive research and trials are focused on the discovery and utilizing for novel therapeutics. Nitric oxide (NO) is produced mainly by endothelial nitric oxide synthase (eNOS) and it plays a key role in regulating vascular function including systemic blood pressure and vascular inflammation in vascular endothelium. In this study hypothesized that Impressic acid (IPA), a component isolated from Acanthopanax koreanum, acts as an enhancer of eNOS activity and NO production. IPA treatment induced eNOS phosphorylation and NO production, which was correlated with eNOS phosphorylation via the activation of JNK1/2, p38 MAPK, AMPK, and CaMKII. In addition, the induction of eNOS phosphorylation by IPA was attenuated by pharmacological inhibitor of MAPKs, AMPK, and CaMKII. Finally, IPA treatment prevented the adhesion of TNF-α-induced monocytes to endothelial cells and suppressed the TNF-α-stimulated ICAM-1 expression via activation of NF-κB, while treatment with L-NAME, the NOS inhibitor, reversed the inhibitory effect of IPA on TNF-α-induced ICAM-1 expression via activation of NF-κB. Taken together, these findings show that IPA protects against TNF-α-induced vascular endothelium dysfunction through attenuation of the NF-κB pathway by activating eNOS/NO pathway in endothelial cells.
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Affiliation(s)
- Sun Woo Jin
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea; (S.W.J.); (H.T.P.); (J.H.C.); (G.H.L.); (Y.H.K.)
| | - Hoa Thi Pham
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea; (S.W.J.); (H.T.P.); (J.H.C.); (G.H.L.); (Y.H.K.)
| | - Jae Ho Choi
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea; (S.W.J.); (H.T.P.); (J.H.C.); (G.H.L.); (Y.H.K.)
| | - Gi Ho Lee
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea; (S.W.J.); (H.T.P.); (J.H.C.); (G.H.L.); (Y.H.K.)
| | - Eun Hee Han
- Drug & Disease Target Research Team, Division of Bioconvergence Analysis, Korea Basic Science Institute (KBSI), Cheongju 28119, Korea;
| | - Young Ho Cho
- Department of Pharmaceutics & Biotechnology, College of Medical Engineering, Konyang University, Daejeon 35365, Korea;
| | - Young Chul Chung
- Department of Food Science, International University of Korea, Jinju, 52833, Korea;
| | - Young Ho Kim
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea; (S.W.J.); (H.T.P.); (J.H.C.); (G.H.L.); (Y.H.K.)
| | - Hye Gwang Jeong
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea; (S.W.J.); (H.T.P.); (J.H.C.); (G.H.L.); (Y.H.K.)
- Correspondence: ; Tel.: +82-42-821-5936
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13
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Villalobos-Labra R, Westermeier F, Pizarro C, Sáez PJ, Toledo F, Pardo F, Kusanovic JP, Mardones F, Poblete JA, Sobrevia L, Farías M. Neonates from women with pregestational maternal obesity show reduced umbilical vein endothelial response to insulin. Placenta 2019; 86:35-44. [PMID: 31345420 DOI: 10.1016/j.placenta.2019.07.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 07/09/2019] [Accepted: 07/15/2019] [Indexed: 01/01/2023]
Abstract
OBJECTIVE Pregestational maternal obesity (PGMO) associates with foetoplacental vascular endothelial dysfunction and higher risk for insulin resistance in the neonate. We characterised the PGMO consequences on the insulin response of the human foetoplacental vasculature. METHODS Umbilical veins were from pregnancies where the mother was with PGMO (body mass index 30-42.3 kg/m2, n = 33) or normal pregestational weight (PGMN) (body mass index 19.5-24.4 kg/m2, n = 21) with total gestational weight gain within the physiological range. Umbilical vein ring segments were mounted in a myograph for isometric force measurements. Primary cultures of human umbilical vein endothelial cells were used in passage 3. Vessel rings and cells were exposed to 1 nmol/L insulin (20 min) in the absence or presence of 100 μmol/L NG-nitro-l-arginine methyl ester (inhibitor of nitric oxide synthase, NOS). RESULTS Vessel rings from PGMO showed reduced nitric oxide synthase-activity dependent dilation to insulin or calcitonin-gene related peptide compared with PGMN. PGMO associated with higher inhibitor phosphorylation of the insulin receptor substrate 1 (IRS-1) and lower activator phosphorylation of protein kinase B/Akt (Akt). Cells from PGMO also showed lower nitric oxide level and reduced activator serine1177 but increased inhibitor threonine495 phosphorylation of endothelial nitric oxide synthase (eNOS) and saturable transport of l-arginine. HUVECs from PGMO were not responsive to insulin. CONCLUSION The lack of response to insulin by the foetoplacental endothelium may result from reduced IRS-1/Akt/eNOS signalling in PGMO. These findings may result in higher risk of insulin resistance in neonates to PGMO pregnancies.
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Affiliation(s)
- Roberto Villalobos-Labra
- Cellular and Molecular Physiology Laboratory (CMPL), Department of Obstetrics, Division of Obstetrics and Gynaecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, 8330024, Chile
| | - Francisco Westermeier
- Cellular and Molecular Physiology Laboratory (CMPL), Department of Obstetrics, Division of Obstetrics and Gynaecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, 8330024, Chile; FH JOANNEUM Gesellschaft MbH University of Applied Sciences, Institute of Biomedical Science, Eggenberger Allee 13, 8020, Graz, Austria
| | - Carolina Pizarro
- Cellular and Molecular Physiology Laboratory (CMPL), Department of Obstetrics, Division of Obstetrics and Gynaecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, 8330024, Chile
| | - Pablo J Sáez
- Cellular and Molecular Physiology Laboratory (CMPL), Department of Obstetrics, Division of Obstetrics and Gynaecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, 8330024, Chile; Institut Curie, Paris Sciences & Lettres Research University, CNRS, UMR 144, F-75005, Paris, France
| | - Fernando Toledo
- Cellular and Molecular Physiology Laboratory (CMPL), Department of Obstetrics, Division of Obstetrics and Gynaecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, 8330024, Chile; Department of Basic Sciences, Faculty of Sciences, Universidad del Bío-Bío, Chillán, 3780000, Chile
| | - Fabián Pardo
- Cellular and Molecular Physiology Laboratory (CMPL), Department of Obstetrics, Division of Obstetrics and Gynaecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, 8330024, Chile; Metabolic Diseases Research Laboratory, Interdisciplinary Center of Territorial Health Research (CIISTe), San Felipe Campus, School of Medicine, Faculty of Medicine, Universidad de Valparaíso, 2172972, San Felipe, Chile
| | - Juan P Kusanovic
- Department of Obstetrics, Division of Obstetrics and Gynaecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, 8330024, Chile
| | - Francisco Mardones
- Department of Public Health, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, 8330024, Chile
| | - José A Poblete
- Department of Obstetrics, Division of Obstetrics and Gynaecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, 8330024, Chile
| | - Luis Sobrevia
- Cellular and Molecular Physiology Laboratory (CMPL), Department of Obstetrics, Division of Obstetrics and Gynaecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, 8330024, Chile; Department of Physiology, Faculty of Pharmacy, Universidad de Sevilla, Seville, E-41012, Spain; University of Queensland Centre for Clinical Research (UQCCR), Faculty of Medicine and Biomedical Sciences, University of Queensland, Herston, QLD 4029, Queensland, Australia.
| | - Marcelo Farías
- Cellular and Molecular Physiology Laboratory (CMPL), Department of Obstetrics, Division of Obstetrics and Gynaecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, 8330024, Chile.
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Zhang H, Vreeken D, Bruikman CS, van Zonneveld AJ, van Gils JM. Understanding netrins and semaphorins in mature endothelial cell biology. Pharmacol Res 2018; 137:1-10. [PMID: 30240825 DOI: 10.1016/j.phrs.2018.09.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 09/15/2018] [Accepted: 09/15/2018] [Indexed: 02/07/2023]
Abstract
Netrins and semaphorins are known as neuronal guidance molecules that are important to the facilitate patterning of the nervous system in embryonic development. In recent years, their function has been broadened to guide development in other systems, including the vascular system, where netrins and semaphorins critically contribute to the development of the vascular system. Evidence is accumulating that these guidance cues are also of critical importance in the biology of the mature endothelium by regulating the maintenance of endothelial quiescence. Here we review our current insights into the roles of netrins and semaphorins in endothelial cell survival, self-renewing, barrier function, response to wall shear stress, and control of the vascular tone. We also provide suggestions for future research into the functions of netrins and semaphorins in mature endothelial cell biology.
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Affiliation(s)
- Huayu Zhang
- Department of Internal Medicine, Einthoven Laboratory for Vascular and Regenerative Medicine, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, the Netherlands
| | - Dianne Vreeken
- Department of Internal Medicine, Einthoven Laboratory for Vascular and Regenerative Medicine, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, the Netherlands
| | - Caroline S Bruikman
- Amsterdam UMC, University of Amsterdam, Department of Vascular Medicine, Amsterdam Cardiovascular Sciences, Meibergdreef 9, Amsterdam, the Netherlands
| | - Anton Jan van Zonneveld
- Department of Internal Medicine, Einthoven Laboratory for Vascular and Regenerative Medicine, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, the Netherlands
| | - Janine M van Gils
- Department of Internal Medicine, Einthoven Laboratory for Vascular and Regenerative Medicine, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, the Netherlands.
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Hsieh YH, Huang HC, Chang CC, Chuang CL, Lee FY, Hsu SJ, Huang YH, Hou MC, Lee SD. Nucleos(t)ide Analogs Do Not Independently Influence Hepatic Fibrosis and Portal Hypertension beyond Viral Suppression in CBDL-Induced Cirrhotic Rat. J Pharmacol Exp Ther 2018; 367:260-266. [PMID: 30194095 DOI: 10.1124/jpet.118.250431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2018] [Accepted: 08/07/2018] [Indexed: 11/22/2022] Open
Abstract
Chronic hepatitis is the major cause of liver cirrhosis and portal hypertension. Several factors affect portal pressure, including liver fibrosis, splanchnic vasodilatation, and pathologic angiogenesis. Nucleos(t)ide analogs (NUCs), the oral antiviral agents, effectively attenuate chronic hepatitis B-related liver cirrhosis and portal hypertension via viral suppression and alleviation of hepatitis. On the other hand, NUCs affect tumor necrosis factor (TNF)-α, vascular endothelial growth factor (VEGF), and nitric oxide, which participate in fibrogenesis, vasodilatation, and angiogenesis. However, whether NUCs independently influence liver fibrosis and portal hypertension beyond viral suppression is unknown. This study thus aimed to evaluate the influences of three frequently used NUCs in rats with nonviral cirrhosis. Male Sprague-Dawley rats received common bile duct ligation (CBDL) to induce cholestatic cirrhosis and portal hypertension. The rats were randomly allocated into four groups, treated by mouth with lamivudine (30 mg/kg per day), entecavir (0.09 mg/kg per day), tenofovir (50 mg/kg per day), or distilled water (vehicle control) from the 15th day after CBDL. On the 29th day, liver cirrhosis- and portal hypertension-related parameters were evaluated. The results showed that chronic NUCs treatment did not affect hemodynamic parameters, plasma TNF-α concentration, and hepatic fibrogenesis protein expressions in rats with nonviral cirrhosis. Though the mesenteric VEGF receptor 2 phosphorylation was downregulated in NUCs-treated groups, the splanchnic angiogenesis was not influenced. In conclusion, lamivudine, entecavir, and tenofovir had no additional effects on liver cirrhosis and portal hypertension in rats with nonviral cirrhosis.
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Affiliation(s)
- Yu-Hsin Hsieh
- Division of Gastroenterology and Hepatology, Department of Medicine (Y.-H.Hs, H.-C.H., F.-Y.L., S.-J.H., Y.-H.Hu, M.-C.H.) and Division of General Medicine, Department of Medicine, (Y.-H.Hs, H.-C.H., C.-C.C., C.-L.C.), Taipei Veterans General Hospital, Taipei, Taiwan; Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan (H.-C.H., C.-C.C., C.-L.C., F.-Y.L., S.-J.H., Y.-H.Hu, M.-C.H., S.-D.L.); and Division of Gastroenterology, Department of Medicine, Cheng Hsin General Hospital, Taipei, Taiwan (S.-D.L.)
| | - Hui-Chun Huang
- Division of Gastroenterology and Hepatology, Department of Medicine (Y.-H.Hs, H.-C.H., F.-Y.L., S.-J.H., Y.-H.Hu, M.-C.H.) and Division of General Medicine, Department of Medicine, (Y.-H.Hs, H.-C.H., C.-C.C., C.-L.C.), Taipei Veterans General Hospital, Taipei, Taiwan; Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan (H.-C.H., C.-C.C., C.-L.C., F.-Y.L., S.-J.H., Y.-H.Hu, M.-C.H., S.-D.L.); and Division of Gastroenterology, Department of Medicine, Cheng Hsin General Hospital, Taipei, Taiwan (S.-D.L.)
| | - Ching-Chih Chang
- Division of Gastroenterology and Hepatology, Department of Medicine (Y.-H.Hs, H.-C.H., F.-Y.L., S.-J.H., Y.-H.Hu, M.-C.H.) and Division of General Medicine, Department of Medicine, (Y.-H.Hs, H.-C.H., C.-C.C., C.-L.C.), Taipei Veterans General Hospital, Taipei, Taiwan; Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan (H.-C.H., C.-C.C., C.-L.C., F.-Y.L., S.-J.H., Y.-H.Hu, M.-C.H., S.-D.L.); and Division of Gastroenterology, Department of Medicine, Cheng Hsin General Hospital, Taipei, Taiwan (S.-D.L.)
| | - Chiao-Lin Chuang
- Division of Gastroenterology and Hepatology, Department of Medicine (Y.-H.Hs, H.-C.H., F.-Y.L., S.-J.H., Y.-H.Hu, M.-C.H.) and Division of General Medicine, Department of Medicine, (Y.-H.Hs, H.-C.H., C.-C.C., C.-L.C.), Taipei Veterans General Hospital, Taipei, Taiwan; Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan (H.-C.H., C.-C.C., C.-L.C., F.-Y.L., S.-J.H., Y.-H.Hu, M.-C.H., S.-D.L.); and Division of Gastroenterology, Department of Medicine, Cheng Hsin General Hospital, Taipei, Taiwan (S.-D.L.)
| | - Fa-Yauh Lee
- Division of Gastroenterology and Hepatology, Department of Medicine (Y.-H.Hs, H.-C.H., F.-Y.L., S.-J.H., Y.-H.Hu, M.-C.H.) and Division of General Medicine, Department of Medicine, (Y.-H.Hs, H.-C.H., C.-C.C., C.-L.C.), Taipei Veterans General Hospital, Taipei, Taiwan; Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan (H.-C.H., C.-C.C., C.-L.C., F.-Y.L., S.-J.H., Y.-H.Hu, M.-C.H., S.-D.L.); and Division of Gastroenterology, Department of Medicine, Cheng Hsin General Hospital, Taipei, Taiwan (S.-D.L.)
| | - Shao-Jung Hsu
- Division of Gastroenterology and Hepatology, Department of Medicine (Y.-H.Hs, H.-C.H., F.-Y.L., S.-J.H., Y.-H.Hu, M.-C.H.) and Division of General Medicine, Department of Medicine, (Y.-H.Hs, H.-C.H., C.-C.C., C.-L.C.), Taipei Veterans General Hospital, Taipei, Taiwan; Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan (H.-C.H., C.-C.C., C.-L.C., F.-Y.L., S.-J.H., Y.-H.Hu, M.-C.H., S.-D.L.); and Division of Gastroenterology, Department of Medicine, Cheng Hsin General Hospital, Taipei, Taiwan (S.-D.L.)
| | - Yi-Hsiang Huang
- Division of Gastroenterology and Hepatology, Department of Medicine (Y.-H.Hs, H.-C.H., F.-Y.L., S.-J.H., Y.-H.Hu, M.-C.H.) and Division of General Medicine, Department of Medicine, (Y.-H.Hs, H.-C.H., C.-C.C., C.-L.C.), Taipei Veterans General Hospital, Taipei, Taiwan; Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan (H.-C.H., C.-C.C., C.-L.C., F.-Y.L., S.-J.H., Y.-H.Hu, M.-C.H., S.-D.L.); and Division of Gastroenterology, Department of Medicine, Cheng Hsin General Hospital, Taipei, Taiwan (S.-D.L.)
| | - Ming-Chih Hou
- Division of Gastroenterology and Hepatology, Department of Medicine (Y.-H.Hs, H.-C.H., F.-Y.L., S.-J.H., Y.-H.Hu, M.-C.H.) and Division of General Medicine, Department of Medicine, (Y.-H.Hs, H.-C.H., C.-C.C., C.-L.C.), Taipei Veterans General Hospital, Taipei, Taiwan; Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan (H.-C.H., C.-C.C., C.-L.C., F.-Y.L., S.-J.H., Y.-H.Hu, M.-C.H., S.-D.L.); and Division of Gastroenterology, Department of Medicine, Cheng Hsin General Hospital, Taipei, Taiwan (S.-D.L.)
| | - Shou-Dong Lee
- Division of Gastroenterology and Hepatology, Department of Medicine (Y.-H.Hs, H.-C.H., F.-Y.L., S.-J.H., Y.-H.Hu, M.-C.H.) and Division of General Medicine, Department of Medicine, (Y.-H.Hs, H.-C.H., C.-C.C., C.-L.C.), Taipei Veterans General Hospital, Taipei, Taiwan; Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan (H.-C.H., C.-C.C., C.-L.C., F.-Y.L., S.-J.H., Y.-H.Hu, M.-C.H., S.-D.L.); and Division of Gastroenterology, Department of Medicine, Cheng Hsin General Hospital, Taipei, Taiwan (S.-D.L.)
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Fredette NC, Meyer MR, Prossnitz ER. Role of GPER in estrogen-dependent nitric oxide formation and vasodilation. J Steroid Biochem Mol Biol 2018; 176:65-72. [PMID: 28529128 PMCID: PMC5694388 DOI: 10.1016/j.jsbmb.2017.05.006] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 05/08/2017] [Accepted: 05/16/2017] [Indexed: 12/11/2022]
Abstract
Estrogens are potent regulators of vasomotor tone, yet underlying receptor- and ligand-specific signaling pathways remain poorly characterized. The primary physiological estrogen 17β-estradiol (E2), a non-selective agonist of classical nuclear estrogen receptors (ERα and ERβ) as well as the G protein-coupled estrogen receptor (GPER), stimulates formation of the vasodilator nitric oxide (NO) in endothelial cells. Here, we studied the contribution of GPER signaling in E2-dependent activation of endothelial NO formation and subsequent vasodilation. Employing E2 and the GPER-selective agonist G-1, we investigated eNOS phosphorylation and NO formation in human endothelial cells, and endothelium-dependent vasodilation in the aortae of wild-type and Gper-deficient mice. Both E2 and G-1 induced phosphorylation of eNOS at the activation site Ser1177 to similar extents. Endothelial NO production to E2 was comparable to that of G-1, and was substantially reduced after pharmacological inhibition of GPER. Similarly, the clinically used ER-targeting drugs 4OH-tamoxifen, raloxifene, and ICI182,780 (faslodex, fulvestrant™) induced NO formation in part via GPER. We identified c-Src, EGFR, PI3K and ERK signaling pathways to be involved in GPER-dependent NO formation. In line with activation of NO formation in cells, E2 and G-1 induced equally potent vasodilation in the aorta of wild-type mice. Gper deletion completely abrogated the vasodilator response to G-1, while reducing the response to E2 by ∼50%. These findings indicate that a substantial portion of E2-induced endothelium-dependent vasodilation and NO formation is mediated by GPER. Thus, selective targeting of vascular GPER may be a suitable approach to activate the endothelial NO pathway, possibly leading to reduced vasomotor tone and inhibition of atherosclerotic vascular disease.
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Affiliation(s)
- Natalie C Fredette
- Department of Internal Medicine, University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA; Current address: Department of Pathology, University of Florida, Gainesville, FL, USA
| | - Matthias R Meyer
- Department of Internal Medicine, University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA; Institute of Primary Care, University of Zurich, Zurich, Switzerland
| | - Eric R Prossnitz
- Department of Internal Medicine, University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA.
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Influence of Nitric Oxide generated through microwave plasma on L6 skeletal muscle cell myogenesis via oxidative signaling pathways. Sci Rep 2017; 7:542. [PMID: 28373641 PMCID: PMC5427886 DOI: 10.1038/s41598-017-00154-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Accepted: 02/13/2017] [Indexed: 02/04/2023] Open
Abstract
Myogenic precursors are myoblasts that have a potency to differentiate into muscle fibers on injury and maintain the regenerative power of skeletal muscle. However, the roles of exogenous nitric oxide (NO) in muscle development and myoblast differentiation are largely unknown. Therefore, in this study, we examined the effects of exogenous NO generated by a microwave plasma torch on rat myoblastic L6 cell proliferation and differentiation. We observed that the differentiation of L6 myogenic precursor cells into myotubes was significantly enhanced after NO treatment. The expression of the myogenesis marker proteins and mRNA level, such as myoD, myogenin, and myosin heavy chain (MHC), as well as the cyclic guanosine monophosphate (cGMP) level, were significantly increased after the NO treatment, without creating toxicity. Moreover, we observed that the oxidative stress signaling [extracellular-signal-regulated kinase (Erks), and Adenosine monophosphate-activated protein kinase (AMPK)] phosphorylation was higher in NO treated cells than in the control cells [without NO treatment]. Therefore, these results reveal the exogenous NO role in regulating myoblast differentiation through the oxidative stress signaling pathway. Through this work, we can suggest that exogenous NO can help in cell differentiation and tissue regeneration, which provides new possibilities for plasma medicine.
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Ritter LR, Chrestensen CA, Salerno JC. A mathematical model of endothelial nitric oxide synthase activation with time delay exhibiting Hopf bifurcation and oscillations. Math Biosci 2016; 281:62-73. [PMID: 27614021 DOI: 10.1016/j.mbs.2016.09.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Revised: 09/01/2016] [Accepted: 09/02/2016] [Indexed: 11/25/2022]
Abstract
Nitric oxide (NO) is a gaseous compound that serves as a signaling molecule in cellular interactions. In the vasculature, NO is synthesized from endogenous agents by endothelial nitric oxide synthase (eNOS) where it plays key roles in several functions related to homeostasis, adaptation, and development. Recent experimental studies have revealed cycles of increasing and decreasing NO production when eNOS is stimulated by factors such as glucose or insulin. We offer a mathematical model of a generic amino acid receptor site on eNOS wherein this species is subject to activation/deactivation by a pair of interactive kinase and phosphatase species. The enzyme kinetic model is presented as a system of ordinary differential equations including time delay to allow for various intermediate, unspecified complexes. We show that under conditions on the model parameters, varying the delay time may give rise to a Hopf bifurcation. Properties of the bifurcating solutions are explored via a center manifold reduction, and a numerical illustration is provided.
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Affiliation(s)
- L R Ritter
- Department of Mathematics, Kennesaw State University, 1100 S. Marietta Pkwy, MD #9085, Marietta, GA 30060, USA.
| | - C A Chrestensen
- Department of Chemistry and Biochemistry, Kennesaw State University, Kennesaw, GA 30144, USA.
| | - J C Salerno
- Department of Molecular and Cellular Biology, Kennesaw State University, Kennesaw, GA 30144, USA
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Astashkin AV, Feng C. Solving Kinetic Equations for the Laser Flash Photolysis Experiment on Nitric Oxide Synthases: Effect of Conformational Dynamics on the Interdomain Electron Transfer. J Phys Chem A 2015; 119:11066-75. [PMID: 26477677 DOI: 10.1021/acs.jpca.5b08414] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The production of nitric oxide by the nitric oxide synthase (NOS) enzyme depends on the interdomain electron transfer (IET) between the flavin mononucleotide (FMN) and heme domains. Although the rate of this IET has been measured by laser flash photolysis (LFP) for various NOS proteins, no rigorous analysis of the relevant kinetic equations was performed so far. In this work, we provide an analytical solution of the kinetic equations underlying the LFP approach. The derived expressions reveal that the bulk IET rate is significantly affected by the conformational dynamics that determines the formation and dissociation rates of the docking complex between the FMN and heme domains. We show that in order to informatively study the electron transfer across the NOS enzyme, LFP should be used in combination with other spectroscopic methods that could directly probe the docking equilibrium and the conformational change rate constants. The implications of the obtained analytical expressions for the interpretation of the LFP results from various native and modified NOS proteins are discussed. The mathematical formulas derived in this work should also be applicable for interpreting the IET kinetics in other modular redox enzymes.
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Affiliation(s)
- Andrei V Astashkin
- Department of Chemistry and Biochemistry, University of Arizona , Tucson, Arizona 85721, United States
| | - Changjian Feng
- Department of Pharmaceutical Sciences, College of Pharmacy, University of New Mexico , Albuquerque, New Mexico 87131, United States
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Helicobacter pylori FlhA Binds the Sensor Kinase and Flagellar Gene Regulatory Protein FlgS with High Affinity. J Bacteriol 2015; 197:1886-92. [PMID: 25802298 DOI: 10.1128/jb.02610-14] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 03/13/2015] [Indexed: 01/02/2023] Open
Abstract
UNLABELLED Flagellar biogenesis is a complex process that involves multiple checkpoints to coordinate transcription of flagellar genes with the assembly of the flagellum. In Helicobacter pylori, transcription of the genes needed in the middle stage of flagellar biogenesis is governed by RpoN and the two-component system consisting of the histidine kinase FlgS and response regulator FlgR. In response to an unknown signal, FlgS autophosphorylates and transfers the phosphate to FlgR, initiating transcription from RpoN-dependent promoters. In the present study, export apparatus protein FlhA was examined as a potential signal protein. Deletion of its N-terminal cytoplasmic sequence dramatically decreased expression of two RpoN-dependent genes, flaB and flgE. Optical biosensing demonstrated a high-affinity interaction between FlgS and a peptide consisting of residues 1 to 25 of FlhA (FlhANT). The KD (equilibrium dissociation constant) was 21 nM and was characterized by fast-on (kon = 2.9 × 10(4) M(-1)s(-1)) and slow-off (koff = 6.2 × 10(-4) s(-1)) kinetics. FlgS did not bind peptides consisting of smaller fragments of the FlhANT sequence. Analysis of binding to purified fragments of FlgS demonstrated that the C-terminal portion of the protein containing the kinase domain binds FlhANT. FlhANT binding did not stimulate FlgS autophosphorylation in vitro, suggesting that FlhA facilitates interactions between FlgS and other structures required to stimulate autophosphorylation. IMPORTANCE The high-affinity binding of FlgS to FlhA characterized in this study points to an additional role for FlhA in flagellar assembly. Beyond its necessity for type III secretion, the N-terminal cytoplasmic sequence of FlhA is required for RpoN-dependent gene expression via interaction with the C-terminal kinase domain of FlgS.
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