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Harvey F, Aromokunola B, Montaut S, Yang G. The Antioxidant Properties of Glucosinolates in Cardiac Cells Are Independent of H 2S Signaling. Int J Mol Sci 2024; 25:696. [PMID: 38255773 PMCID: PMC10815443 DOI: 10.3390/ijms25020696] [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: 11/02/2023] [Revised: 01/02/2024] [Accepted: 01/03/2024] [Indexed: 01/24/2024] Open
Abstract
The organic sulfur-containing compounds glucosinolates (GSLs) and the novel gasotransmitter H2S are known to have cardioprotective effects. This study investigated the antioxidant effects and H2S-releasing potential of three GSLs ((3E)-4-(methylsulfanyl)but-3-enyl GSL or glucoraphasatin, 4-hydroxybenzyl GSL or glucosinalbin, and (RS)-6-(methylsulfinyl)hexyl GSL or glucohesperin) in rat cardiac cells. It was found that all three GSLs had no effect on cardiac cell viability but were able to protect against H2O2-induced oxidative stress and cell death. NaHS, a H2S donor, also protected the cells from H2O2-stimulated oxidative stress and cell death. The GSLs alone or mixed with cysteine, N-acetylcysteine, glutathione, H2O2, iron and pyridoxal-5'-phosphate, or mouse liver lysates did not induce H2S release. The addition of GSLs also did not alter endogenous H2S levels in cardiac cells. H2O2 significantly induced cysteine oxidation in the cystathionine gamma-lyase (CSE) protein and inhibited the H2S production rate. In conclusion, this study found that the three tested GSLs protect cardiomyocytes from oxidative stress and cell death but independently of H2S signaling.
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Affiliation(s)
- Félix Harvey
- School of Natural Sciences, Laurentian University, Sudbury, ON P3E 2C6, Canada; (F.H.); (B.A.)
- Cardiovascular and Metabolic Research Unit, Laurentian University, Sudbury, ON P3E 2C6, Canada
| | - Boluwaji Aromokunola
- School of Natural Sciences, Laurentian University, Sudbury, ON P3E 2C6, Canada; (F.H.); (B.A.)
- Cardiovascular and Metabolic Research Unit, Laurentian University, Sudbury, ON P3E 2C6, Canada
| | - Sabine Montaut
- School of Natural Sciences, Laurentian University, Sudbury, ON P3E 2C6, Canada; (F.H.); (B.A.)
| | - Guangdong Yang
- School of Natural Sciences, Laurentian University, Sudbury, ON P3E 2C6, Canada; (F.H.); (B.A.)
- Cardiovascular and Metabolic Research Unit, Laurentian University, Sudbury, ON P3E 2C6, Canada
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Yoon SA, Gopala L, Lee MH. Biocompatible 7-nitro-2,1,3-benzoxadiazole-embedded naphthalimide for exploring endogenous H 2S in living cells. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 295:122582. [PMID: 36905738 DOI: 10.1016/j.saa.2023.122582] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 02/03/2023] [Accepted: 03/01/2023] [Indexed: 06/18/2023]
Abstract
Hydrogen sulfide (H2S) is a central signaling and antioxidant biomolecule involved in various biological processes. As inappropriate levels of H2S in the human body are closely related to various diseases, including cancer, a tool capable of detecting H2S with high selectivity and sensitivity in living systems is urgently required. In this work, we intended to develop a biocompatible and activatable fluorescent molecular probe for detecting H2S generation in living cells. The 7-nitro-2,1,3-benzoxadiazole-imbedded naphthalimide (1) probe presented here responds specifically to H2S and produces readily detectable fluorescence at 530 nm. Interestingly, probe 1 exhibited significant fluorescence responses to changes in endogenous H2S levels as well as high biocompatibility and permeability in living HeLa cells. This allowed for the real-time monitoring of endogenous H2S generation as an antioxidant defense response in the oxidatively stressed cells.
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Affiliation(s)
- Shin A Yoon
- Department of Chemistry, Sookmyung Women's University, Seoul 04310, South Korea
| | - Lavanya Gopala
- Department of Chemistry, Sookmyung Women's University, Seoul 04310, South Korea
| | - Min Hee Lee
- Department of Chemistry, Sookmyung Women's University, Seoul 04310, South Korea.
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Bechelli C, Macabrey D, Deglise S, Allagnat F. Clinical Potential of Hydrogen Sulfide in Peripheral Arterial Disease. Int J Mol Sci 2023; 24:9955. [PMID: 37373103 DOI: 10.3390/ijms24129955] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 06/01/2023] [Accepted: 06/05/2023] [Indexed: 06/29/2023] Open
Abstract
Peripheral artery disease (PAD) affects more than 230 million people worldwide. PAD patients suffer from reduced quality of life and are at increased risk of vascular complications and all-cause mortality. Despite its prevalence, impact on quality of life and poor long-term clinical outcomes, PAD remains underdiagnosed and undertreated compared to myocardial infarction and stroke. PAD is due to a combination of macrovascular atherosclerosis and calcification, combined with microvascular rarefaction, leading to chronic peripheral ischemia. Novel therapies are needed to address the increasing incidence of PAD and its difficult long-term pharmacological and surgical management. The cysteine-derived gasotransmitter hydrogen sulfide (H2S) has interesting vasorelaxant, cytoprotective, antioxidant and anti-inflammatory properties. In this review, we describe the current understanding of PAD pathophysiology and the remarkable benefits of H2S against atherosclerosis, inflammation, vascular calcification, and other vasculo-protective effects.
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Affiliation(s)
- Clémence Bechelli
- Department of Vascular Surgery, Lausanne University Hospital, 1005 Lausanne, Switzerland
| | - Diane Macabrey
- Department of Vascular Surgery, Lausanne University Hospital, 1005 Lausanne, Switzerland
| | - Sebastien Deglise
- Department of Vascular Surgery, Lausanne University Hospital, 1005 Lausanne, Switzerland
| | - Florent Allagnat
- Department of Vascular Surgery, Lausanne University Hospital, 1005 Lausanne, Switzerland
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Le Corre L, Padovani D. Mechanism-based and computational modeling of hydrogen sulfide biogenesis inhibition: interfacial inhibition. Sci Rep 2023; 13:7287. [PMID: 37142727 PMCID: PMC10160035 DOI: 10.1038/s41598-023-34405-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 04/28/2023] [Indexed: 05/06/2023] Open
Abstract
Hydrogen sulfide (H2S) is a gaseous signaling molecule that participates in various signaling functions in health and diseases. The tetrameric cystathionine γ-lyase (CSE) contributes to H2S biogenesis and several investigations provide evidence on the pharmacological modulation of CSE as a potential target for the treatment of a multitude of conditions. D-penicillamine (D-pen) has recently been reported to selectively impede CSE-catalyzed H2S production but the molecular bases for such inhibitory effect have not been investigated. In this study, we report that D-pen follows a mixed-inhibition mechanism to inhibit both cystathionine (CST) cleavage and H2S biogenesis by human CSE. To decipher the molecular mechanisms underlying such a mixed inhibition, we performed docking and molecular dynamics (MD) simulations. Interestingly, MD analysis of CST binding reveals a likely active site configuration prior to gem-diamine intermediate formation, particularly H-bond formation between the amino group of the substrate and the O3' of PLP. Similar analyses realized with both CST and D-pen identified three potent interfacial ligand-binding sites for D-pen and offered a rational for D-pen effect. Thus, inhibitor binding not only induces the creation of an entirely new interacting network at the vicinity of the interface between enzyme subunits, but it also exerts long range effects by propagating to the active site. Overall, our study paves the way for the design of new allosteric interfacial inhibitory compounds that will specifically modulate H2S biogenesis by cystathionine γ-lyase.
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Affiliation(s)
- Laurent Le Corre
- Université Paris Cité, CNRS, Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, 75006, Paris, France
| | - Dominique Padovani
- Université Paris Cité, CNRS, Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, 75006, Paris, France.
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Jamaluddin M, Haas de Mello A, Tapryal N, Hazra TK, Garofalo RP, Casola A. NRF2 Regulates Cystathionine Gamma-Lyase Expression and Activity in Primary Airway Epithelial Cells Infected with Respiratory Syncytial Virus. Antioxidants (Basel) 2022; 11:1582. [PMID: 36009301 PMCID: PMC9405023 DOI: 10.3390/antiox11081582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 08/08/2022] [Accepted: 08/12/2022] [Indexed: 11/16/2022] Open
Abstract
Cystathionine-y-lyase (CSE) is a critical enzyme for hydrogen sulfide (H2S) biosynthesis and plays a key role in respiratory syncytial virus (RSV) pathogenesis. The transcription factor NRF2 is the master regulator of cytoprotective and antioxidant gene expression, and is degraded during RSV infection. While some evidence supports the role of NRF2 in CSE gene transcription, its role in CSE expression in airway epithelial cells is not known. Here, we show that RSV infection decreased CSE expression and activity in primary small airway epithelial (SAE) cells, while treatment with tert-butylhydroquinone (tBHQ), an NRF2 inducer, led to an increase of both. Using reporter gene assays, we identified an NRF2 response element required for the NRF2 inducible expression of the CSE promoter. Electrophoretic mobility shift assays demonstrated inducible specific NRF2 binding to the DNA probe corresponding to the putative CSE promoter NRF2 binding sequence. Using chromatin immunoprecipitation assays, we found a 50% reduction in NRF2 binding to the endogenous CSE proximal promoter in SAE cells infected with RSV, and increased binding in cells stimulated with tBHQ. Our results support the hypothesis that NRF2 regulates CSE gene transcription in airway epithelial cells, and that RSV-induced NRF2 degradation likely accounts for the observed reduced CSE expression and activity.
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Affiliation(s)
- Mohammad Jamaluddin
- Department of Pediatrics, The University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Aline Haas de Mello
- Department of Pediatrics, The University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Nisha Tapryal
- Department of Internal Medicine, The University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Tapas K. Hazra
- Department of Internal Medicine, The University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Roberto P. Garofalo
- Department of Pediatrics, The University of Texas Medical Branch, Galveston, TX 77555, USA
- Department of Microbiology and Immunology, The University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Antonella Casola
- Department of Pediatrics, The University of Texas Medical Branch, Galveston, TX 77555, USA
- Department of Microbiology and Immunology, The University of Texas Medical Branch, Galveston, TX 77555, USA
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