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Liao S, Chen Y. The Role of Bioactive Small Molecules in COPD Pathogenesis. COPD 2024; 21:2307618. [PMID: 38329475 DOI: 10.1080/15412555.2024.2307618] [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: 10/31/2023] [Accepted: 01/15/2024] [Indexed: 02/09/2024]
Abstract
Chronic obstructive pulmonary disease (COPD) is recognized as a predominant contributor to mortality worldwide, which causes significant burdens to both society and individuals. Given the limited treatment options for COPD, there lies a critical realization: the imperative for expeditious development of novel therapeutic modalities that can effectively alleviate disease progression and enhance the quality of life experienced by COPD patients. Within the intricate field of COPD pathogenesis, an assortment of biologically active small molecules, encompassing small protein molecules and their derivatives, assumes crucial roles through diverse mechanisms. These mechanisms relate to the regulation of redox balance, the inhibition of the release of inflammatory mediators, and the modulation of cellular functions. Therefore, the present article aims to explore and elucidate the distinct roles played by different categories of biologically active small molecules in contributing to the pathogenesis of COPD.
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Affiliation(s)
- Sha Liao
- Department of Pulmonary and Critical Care Medicine, Peking University Third Hospital, Beijing, China
| | - Yahong Chen
- Department of Pulmonary and Critical Care Medicine, Peking University Third Hospital, Beijing, China
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2
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Miao Y, Zhong C, Bao S, Wei K, Wang W, Li N, Bai C, Chen W, Tang H. Impaired tryptophan metabolism by type 2 inflammation in epithelium worsening asthma. iScience 2024; 27:109923. [PMID: 38799558 PMCID: PMC11126962 DOI: 10.1016/j.isci.2024.109923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 03/16/2024] [Accepted: 05/03/2024] [Indexed: 05/29/2024] Open
Abstract
Previous researches indicate that tryptophan metabolism is critical to allergic inflammation and that indoleamine 2,3-dioxygenase 1 (IDO1), as a key enzyme, is known for its immunosuppressive properties. Therefore, we are aimed to explore whether tryptophan metabolism, especially IDO1, influences allergic asthma and clarify specific mechanism. With the analysis of clinical data, exploration in cell experiments, and verifying in HDM-induced asthma mice models, we finally found that in allergic asthma, low level of T1 cytokines along with high level of T2 cytokines inhibited the expression of IDO1 in airway epithelium, hampering the kynurenine pathway in tryptophan metabolism and decreasing the level of intracellular kynurenine (Kyn). As an endogenous ligand of aryl hydrocarbon receptor, Kyn regulated the expression of cystathionine-γ-lyase (CTH). Notably, in asthma models, enhancing either IDO1 or H2S relieved asthma, while inhibiting the activity of CTH exacerbated it. IDO1-Kyn-CTH pathway could be a potential target for treatment for allergic asthma.
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Affiliation(s)
- Yushan Miao
- Department of Respiratory and Critical Care Medicine, Shanghai Changzheng Hospital, Naval Medical University, Shanghai 200003, China
- Department of Respiratory and Critical Care Medicine, Shanghai Changhai Hospital, Naval Medical University, Shanghai 200433, China
| | - Caiming Zhong
- Department of Respiratory and Critical Care Medicine, Shanghai Changzheng Hospital, Naval Medical University, Shanghai 200003, China
- Department of Respiratory and Critical Care Medicine, Shanghai Changhai Hospital, Naval Medical University, Shanghai 200433, China
| | - Shujun Bao
- Department of Respiratory and Critical Care Medicine, Shanghai Changzheng Hospital, Naval Medical University, Shanghai 200003, China
| | - Kunchen Wei
- Department of Respiratory and Critical Care Medicine, Shanghai Changzheng Hospital, Naval Medical University, Shanghai 200003, China
| | - Wei Wang
- Department of Respiratory and Critical Care Medicine, Shanghai Changzheng Hospital, Naval Medical University, Shanghai 200003, China
| | - Na Li
- School of Medicine, Shanghai University, Shanghai 200444, China
| | - Chong Bai
- Department of Respiratory and Critical Care Medicine, Shanghai Changhai Hospital, Naval Medical University, Shanghai 200433, China
| | - Wei Chen
- Department of Nephrology, Shanghai Changhai Hospital, Naval Medical University, Shanghai 200433, China
| | - Hao Tang
- Department of Respiratory and Critical Care Medicine, Shanghai Changzheng Hospital, Naval Medical University, Shanghai 200003, China
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3
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Wang XL, Xu YT, Zhang SL, Zhu XY, Zhang HX, Liu YJ. Hydrogen sulfide inhibits alveolar type II cell senescence and limits pulmonary fibrosis via promoting MDM2-mediated p53 degradation. Acta Physiol (Oxf) 2024; 240:e14059. [PMID: 37987182 DOI: 10.1111/apha.14059] [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: 01/04/2023] [Revised: 09/25/2023] [Accepted: 10/16/2023] [Indexed: 11/22/2023]
Abstract
AIM Senescence of alveolar type II (AT2) cells is an important driver of pulmonary fibrosis. This study aimed to investigate whether and how dysregulation of hydrogen sulfide (H2 S) production affected AT2 cell senescence, and then explored the effect of H2 S on the communication between AT2 and fibroblasts. METHODS ICR mice were intratracheally administered with bleomycin (3 mg/kg). Sodium hydrosulfide (NaHS, 28 μmol/kg/d) was intraperitoneally injected for 2 weeks. The H2 S-generating enzyme cystathionine-β-synthase (CBS) knockout heterozygous (CBS+/- ) mice were used as a low H2 S production model. RESULTS Analysis of microarray datasets revealed downregulation of H2 S-generating enzymes in lung tissues of patients with pulmonary fibrosis. Decreased H2 S production was correlated with higher levels of cell senescence markers p53 and p21 in bleomycin-induced lung fibrosis. CBS+/- mice exhibited increased levels of p53 and p21. The numbers of AT2 cells positive for p53 and p21 were increased in CBS+/- mice as compared to control mice. H2 S donor NaHS attenuated bleomycin-induced AT2 cell senescence both in vivo and in vitro. H2 S donor suppressed bleomycin-induced senescence-associated secretory phenotype (SASP) of AT2 cells via inhibiting p53/p21 pathway, consequently suppressing proliferation and myofibroblast transdifferentiation of fibroblasts. Mechanically, H2 S suppressed p53 expression by enhancing the mouse double-minute 2 homologue (MDM2)-mediated ubiquitination and degradation of p53. CONCLUSION H2 S inactivated p53-p21 pathway, consequently suppressing AT2 cell senescence as well as cell communication between senescent AT2 cells and fibroblasts. Aberrant H2 S synthesis may contribute to the development of pulmonary fibrosis through promoting the activation loop involving senescent AT2 cells and activated fibroblasts.
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Affiliation(s)
- Xiu-Li Wang
- School of Kinesiology, The Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport, Shanghai, China
- Department of Rehabilitation Medicine, Second Hospital of Lanzhou University, Lanzhou, Gansu Province, China
| | - Yi-Tong Xu
- School of Kinesiology, The Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport, Shanghai, China
| | - Shu-Li Zhang
- School of Kinesiology, The Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport, Shanghai, China
| | - Xiao-Yan Zhu
- Department of Physiology, Navy Medical University, Shanghai, China
| | - Hong-Xia Zhang
- Department of Geriatrics, Kongjiang Hospital, Shanghai, China
| | - Yu-Jian Liu
- School of Kinesiology, The Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport, Shanghai, China
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Jiang S, Chen H, Shen P, Zhou Y, Li Q, Zhang J, Chen Y. Gasotransmitter Research Advances in Respiratory Diseases. Antioxid Redox Signal 2024; 40:168-185. [PMID: 37917094 DOI: 10.1089/ars.2023.0410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
Significance: Gasotransmitters are small gas molecules that are endogenously generated and have well-defined physiological functions. The most well-defined gasotransmitters currently are nitric oxide (NO), carbon monoxide (CO), and hydrogen sulfide (H2S), while other potent gasotransmitters include ammonia, methane, cyanide, hydrogen gas, and sulfur dioxide. Gasotransmitters play a role in various respiratory diseases such as asthma, chronic obstructive pulmonary disease, obstructive sleep apnea, lung infection, bronchiectasis, cystic fibrosis, primary ciliary dyskinesia, and COVID-19. Recent Advances: Gasotransmitters can act as biomarkers that facilitate disease diagnosis, indicate disease severity, predict disease exacerbation, and evaluate disease outcomes. They also have cell-protective properties, and many studies have been conducted to explore their pharmacological applications. Innovative drug donors and drug delivery methods have been invented to amplify their therapeutic effects. Critical Issues: In this article, we briefly reviewed the physiological and pathophysiological functions of some gasotransmitters in the respiratory system, the progress in detecting exhaled gasotransmitters, as well as innovative drugs derived from these molecules. Future Directions: The current challenge for gasotransmitter research includes further exploring their physiological and pathological functions, clarifying their complicated interactions, exploring suitable drug donors and delivery devices, and characterizing new members of gasotransmitters. Antioxid. Redox Signal. 40, 168-185.
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Affiliation(s)
- Simin Jiang
- Department of Pulmonary and Critical Care Medicine, Peking University Third Hospital, Beijing, China
| | - Haijie Chen
- Department of Pulmonary and Critical Care Medicine, Peking University Third Hospital, Beijing, China
| | - Pu Shen
- Department of Pulmonary and Critical Care Medicine, Peking University Third Hospital, Beijing, China
| | - Yumou Zhou
- Department of Pulmonary and Critical Care Medicine, Peking University Third Hospital, Beijing, China
| | - Qiaoyu Li
- Department of Pulmonary and Critical Care Medicine, Peking University Third Hospital, Beijing, China
| | - Jing Zhang
- Department of Pulmonary and Critical Care Medicine, Peking University Third Hospital, Beijing, China
| | - Yahong Chen
- Department of Pulmonary and Critical Care Medicine, Peking University Third Hospital, Beijing, China
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Li L, Chen X, Liu C, He Z, Shen Q, Zhu Y, Wang X, Cao S, Yang S. Endogenous hydrogen sulphide deficiency and exogenous hydrogen sulphide supplement regulate skin fibroblasts proliferation via necroptosis. Exp Dermatol 2024; 33:e14972. [PMID: 37975594 DOI: 10.1111/exd.14972] [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: 05/08/2023] [Revised: 08/24/2023] [Accepted: 10/19/2023] [Indexed: 11/19/2023]
Abstract
An excessive proliferation of skin fibroblasts usually results in different skin fibrotic diseases. Hydrogen sulphide (H2 S) is regarded as an important endogenous gasotransmitter with various functions. The study aimed to investigate the roles and mechanisms of H2 S on primary mice skin fibroblasts proliferation. Cell proliferation and collagen synthesis were assessed with the expression of α-smooth muscle actin (α-SMA), proliferating cell nuclear antigen (PCNA), Collagen I and Collagen III. The degree of oxidative stress was evaluated by dihydroethidium (DHE) and MitoSOX staining. Mitochondrial membrane potential (ΔΨm) was detected by JC-1 staining. Necroptosis was evaluated with TDT-mediated dUTP nick end labelling (TUNEL) and expression of receptor-interacting protein kinase 1 (RIPK1), RIPK3 and mixed lineage kinase domain-like protein (MLKL). The present study found that α-SMA, PCNA, Collagen I and Collagen III expression were increased, oxidative stress was promoted, ΔΨm was impaired and positive rate of TUNEL staining, RIPK1 and RIPK3 expression as well as MLKL phosphorylation were all enhanced in skin fibroblasts from cystathionine γ-lyase (CSE) knockout (KO) mice or transforming growth factor-β1 (TGF-β1, 10 ng/mL)-stimulated mice skin fibroblasts, which was restored by exogenous sodium hydrosulphide (NaHS, 50 μmol/L). In conclusion, endogenous H2 S production impairment in CSE-deficient mice accelerated skin fibroblasts proliferation via promoted necroptosis, which was attenuated by exogenous H2 S. Exogenous H2 S supplement alleviated proliferation of skin fibroblasts with TGF-β1 stimulation via necroptosis inhibition. This study provides evidence for H2 S as a candidate agent to prevent and treat skin fibrotic diseases.
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Affiliation(s)
- Ling Li
- Department of Dermatology, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, China
- Yancheng First Hospital, Affiliated Hospital of Nanjing University Medical School, The First people's Hospital of Yancheng, Yancheng, China
| | - Xudong Chen
- Department of Dermatology, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, China
| | - Chang Liu
- Department of Dermatology, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, China
| | - Ziying He
- Department of Dermatology, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, China
| | - Qiyan Shen
- Department of Dermatology, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, China
| | - Yue Zhu
- Department of Dermatology, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, China
| | - Xin Wang
- Department of Dermatology, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, China
| | - Shuanglin Cao
- Department of Dermatology, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, China
| | - Shengju Yang
- Department of Dermatology, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, China
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Zhao H, Zhang Y, Fu X, Chen C, Khattak S, Wang H. The double-edged sword role of hydrogen sulfide in hepatocellular carcinoma. Front Pharmacol 2023; 14:1280308. [PMID: 37886126 PMCID: PMC10598729 DOI: 10.3389/fphar.2023.1280308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 10/02/2023] [Indexed: 10/28/2023] Open
Abstract
With an increasing worldwide prevalence, hepatocellular carcinoma (HCC) is the most common primary malignant tumor of the liver in the world. It is also the primary reason for cancer-related death in the world. The pathogenesis of HCC is complex, such as DNA methylation changes, immune regulatory disorders, cell cycle disorders, chromosomal instability, and so on. Although many studies have been conducted on HCC, the molecular mechanisms of HCC are not completely understood. At present, there is no effective treatment for HCC. Hydrogen sulfide (H2S) has long been regarded as a toxic gas with the smell of rotten eggs, but recent studies have shown that it is an important gasotransmitter along with carbon monoxide (CO) and nitric oxide (NO). Increasing evidence indicates that H2S has multiple biological functions, such as anti-inflammation, anti-apoptosis, anti-oxidative stress, and so on. Recently, a lot of evidence has shown that H2S has a "double-edged sword" effect in HCC, but the mechanism is not fully understood. Here, we reviewed the progress on the role and mechanism of H2S in HCC in recent years, hoping to provide a theoretical reference for future related research.
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Affiliation(s)
- Huijie Zhao
- Institute of Chronic Disease Risks Assessment, Henan University, Kaifeng, China
| | - Yanting Zhang
- School of Basic Medical Sciences, Henan University, Kaifeng, Henan, China
- School of Clinical Medicine, Henan University, Kaifeng, Henan, China
| | - Xiaodi Fu
- School of Basic Medical Sciences, Henan University, Kaifeng, Henan, China
| | - Chaoren Chen
- School of Nursing and Health, Institute of Nursing and Health, Henan University, Kaifeng, Henan, China
| | - Saadullah Khattak
- Henan International Joint Laboratory for Nuclear Protein Regulation, School of Basic Medical Sciences, Henan University, Kaifeng, Henan, China
- School of Life Sciences, Henan University, Kaifeng, China
| | - Honggang Wang
- School of Basic Medical Sciences, Henan University, Kaifeng, Henan, China
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7
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Gea J, Enríquez-Rodríguez CJ, Agranovich B, Pascual-Guardia S. Update on metabolomic findings in COPD patients. ERJ Open Res 2023; 9:00180-2023. [PMID: 37908399 PMCID: PMC10613990 DOI: 10.1183/23120541.00180-2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 08/15/2023] [Indexed: 11/02/2023] Open
Abstract
COPD is a heterogeneous disorder that shows diverse clinical presentations (phenotypes and "treatable traits") and biological mechanisms (endotypes). This heterogeneity implies that to carry out a more personalised clinical management, it is necessary to classify each patient accurately. With this objective, and in addition to clinical features, it would be very useful to have well-defined biological markers. The search for these markers may either be done through more conventional laboratory and hypothesis-driven techniques or relatively blind high-throughput methods, with the omics approaches being suitable for the latter. Metabolomics is the science that studies biological processes through their metabolites, using various techniques such as gas and liquid chromatography, mass spectrometry and nuclear magnetic resonance. The most relevant metabolomics studies carried out in COPD highlight the importance of metabolites involved in pathways directly related to proteins (peptides and amino acids), nucleic acids (nitrogenous bases and nucleosides), and lipids and their derivatives (especially fatty acids, phospholipids, ceramides and eicosanoids). These findings indicate the relevance of inflammatory-immune processes, oxidative stress, increased catabolism and alterations in the energy production. However, some specific findings have also been reported for different COPD phenotypes, demographic characteristics of the patients, disease progression profiles, exacerbations, systemic manifestations and even diverse treatments. Unfortunately, the studies carried out to date have some limitations and shortcomings and there is still a need to define clear metabolomic profiles with clinical utility for the management of COPD and its implicit heterogeneity.
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Affiliation(s)
- Joaquim Gea
- Respiratory Medicine Department, Hospital del Mar – IMIM, Barcelona, Spain
- MELIS Department, Universitat Pompeu Fabra, Barcelona, Spain
- CIBERES, ISCIII, Barcelona, Spain
| | - César J. Enríquez-Rodríguez
- Respiratory Medicine Department, Hospital del Mar – IMIM, Barcelona, Spain
- MELIS Department, Universitat Pompeu Fabra, Barcelona, Spain
| | - Bella Agranovich
- Rappaport Institute for Research in the Medical Sciences, Technion University, Haifa, Israel
| | - Sergi Pascual-Guardia
- Respiratory Medicine Department, Hospital del Mar – IMIM, Barcelona, Spain
- MELIS Department, Universitat Pompeu Fabra, Barcelona, Spain
- CIBERES, ISCIII, Barcelona, Spain
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Teigen L, Biruete A, Khoruts A. Impact of diet on hydrogen sulfide production: implications for gut health. Curr Opin Clin Nutr Metab Care 2023; 26:55-58. [PMID: 36542535 PMCID: PMC10413438 DOI: 10.1097/mco.0000000000000881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
PURPOSE OF REVIEW Excessive hydrogen sulfide (H 2 S) production by the gut microbiota may contribute to the pathogenesis of multiple intestinal diseases, including colon cancer and ulcerative colitis. Therefore, understanding of dietary drivers of H 2 S production has potential implications for nutritional strategies to optimize gut health and treat intestinal diseases. RECENT FINDINGS Recent studies support a positive relationship between dietary protein intake and H 2 S production. However, protein rarely exists in isolation in the diet, and dietary fiber intake could reduce H 2 S production in humans and animals, even with ∼30% of calories derived from protein. SUMMARY These findings suggest that increased fiber intake may reduce H 2 S production irrespective of protein intake, enabling the ability to meet the metabolic demands of the illness while supporting gut health. Here we discuss two recent ulcerative colitis diet studies that illustrate this point.
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Affiliation(s)
- Levi Teigen
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, University of Minnesota, Minneapolis, Minnesota
| | - Annabel Biruete
- Department of Nutrition Science, Purdue University, West Lafayette, Indiana
- Division of Nephrology, Indiana University School of Medicine, Indianapolis, Indiana
| | - Alexander Khoruts
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, University of Minnesota, Minneapolis, Minnesota
- BioTechnology Institute, University of Minnesota, St. Paul, Minnesota, USA
- Center for Immunology, University of Minnesota, Minneapolis, Minnesota, USA
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Hydrogen Sulfide: A Gaseous Mediator and Its Key Role in Programmed Cell Death, Oxidative Stress, Inflammation and Pulmonary Disease. Antioxidants (Basel) 2022; 11:antiox11112162. [PMID: 36358533 PMCID: PMC9687070 DOI: 10.3390/antiox11112162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 10/21/2022] [Accepted: 10/30/2022] [Indexed: 11/06/2022] Open
Abstract
Hydrogen sulfide (H2S) has been acknowledged as a novel gaseous mediator. The metabolism of H2S in mammals is tightly controlled and is mainly achieved by many physiological reactions catalyzed by a suite of enzymes. Although the precise actions of H2S in regulating programmed cell death, oxidative stress and inflammation are yet to be fully understood, it is becoming increasingly clear that H2S is extensively involved in these crucial processes. Since programmed cell death, oxidative stress and inflammation have been demonstrated as three important mechanisms participating in the pathogenesis of various pulmonary diseases, it can be inferred that aberrant H2S metabolism also functions as a critical contributor to pulmonary diseases, which has also been extensively investigated. In the meantime, substantial attention has been paid to developing therapeutic approaches targeting H2S for pulmonary diseases. In this review, we summarize the cutting-edge knowledge on the metabolism of H2S and the relevance of H2S to programmed cell death, oxidative stress and inflammation. We also provide an update on the crucial roles played by H2S in the pathogenesis of several pulmonary diseases. Finally, we discuss the perspective on targeting H2S metabolism in the treatment of pulmonary diseases.
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10
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Jiang S, Chen Y. The role of sulfur compounds in chronic obstructive pulmonary disease. Front Mol Biosci 2022; 9:928287. [PMID: 36339716 PMCID: PMC9626809 DOI: 10.3389/fmolb.2022.928287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 10/03/2022] [Indexed: 11/19/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a common respiratory disease that brings about great social and economic burden, with oxidative stress and inflammation affecting the whole disease progress. Sulfur compounds such as hydrogen sulfide (H2S), thiols, and persulfides/polysulfides have intrinsic antioxidant and anti-inflammatory ability, which is engaged in the pathophysiological process of COPD. Hydrogen sulfide mainly exhibits its function by S-sulfidation of the cysteine residue of the targeted proteins. It also interacts with nitric oxide and acts as a potential biomarker for the COPD phenotype. Thiols’ redox buffer such as the glutathione redox couple is a major non-enzymatic redox buffer reflecting the oxidative stress in the organism. The disturbance of redox buffers was often detected in patients with COPD, and redressing the balance could delay COPD exacerbation. Sulfane sulfur refers to a divalent sulfur atom bonded with another sulfur atom. Among them, persulfides and polysulfides have an evolutionarily conserved modification with antiaging effects. Sulfur compounds and their relative signaling pathways are also associated with the development of comorbidities in COPD. Synthetic compounds which can release H2S and persulfides in the organism have gradually been developed. Naturally extracted sulfur compounds with pharmacological effects also aroused great interest. This study discussed the biological functions and mechanisms of sulfur compounds in regulating COPD and its comorbidities.
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Szabo C. Novel Regulatory Roles of Hydrogen Sulfide in Health and Disease. Biomolecules 2022; 12:biom12101372. [PMID: 36291581 PMCID: PMC9599174 DOI: 10.3390/biom12101372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 09/23/2022] [Indexed: 11/16/2022] Open
Affiliation(s)
- Csaba Szabo
- Chair of Pharmacology, Section of Medicine, University of Fribourg, CH-1700 Fribourg, Switzerland
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12
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Nucera F, Mumby S, Paudel KR, Dharwal V, DI Stefano A, Casolaro V, Hansbro PM, Adcock IM, Caramori G. Role of oxidative stress in the pathogenesis of COPD. Minerva Med 2022; 113:370-404. [PMID: 35142479 DOI: 10.23736/s0026-4806.22.07972-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Chronic inhalation of cigarette smoke is a prominent cause of chronic obstructive pulmonary disease (COPD) and provides an important source of exogenous oxidants. In addition, several inflammatory and structural cells are a source of endogenous oxidants in the lower airways of COPD patients, even in former smokers. This suggests that oxidants play a key role in the pathogenesis of COPD. This oxidative stress is counterbalanced by the protective effects of the various endogenous antioxidant defenses of the lower airways. A large amount of data from animal models and patients with COPD have shown that both the stable phase of the disease, and during exacerbations, have increased oxidative stress in the lower airways compared with age-matched smokers with normal lung function. Thus, counteracting the increased oxidative stress may produce clinical benefits in COPD patients. Smoking cessation is currently the most effective treatment of COPD patients and reduces oxidative stress in the lower airways. In addition, many drugs used to treat COPD have some antioxidant effects, however, it is still unclear if their clinical efficacy is related to pharmacological modulation of the oxidant/antioxidant balance. Several new antioxidant compounds are in development for the treatment of COPD.
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Affiliation(s)
- Francesco Nucera
- Pneumologia, Dipartimento di Scienze Biomediche, Odontoiatriche e delle Immagini Morfologiche e Funzionali (BIOMORF), Università degli Studi di Messina, Messina, Italy -
| | - Sharon Mumby
- Airways Diseases Section, Faculty of Medicine, Imperial College London, National Heart and Lung Institute, London, UK
| | - Keshav R Paudel
- Centre for Inflammation, Centenary Institute and University of Technology Sydney, School of Life Sciences, Faculty of Science, Sydney, Australia
| | - Vivek Dharwal
- Centre for Inflammation, Centenary Institute and University of Technology Sydney, School of Life Sciences, Faculty of Science, Sydney, Australia
| | - Antonino DI Stefano
- Divisione di Pneumologia e Laboratorio di Citoimmunopatologia dell'Apparato Cardio Respiratorio, Istituti Clinici Scientifici Maugeri, IRCCS, Veruno, Novara, Italy
| | - Vincenzo Casolaro
- Department of Medicine, Surgery and Dentistry Scuola Medica Salernitana, University of Salerno, Salerno, Italy
| | - Philip M Hansbro
- Centre for Inflammation, Centenary Institute and University of Technology Sydney, School of Life Sciences, Faculty of Science, Sydney, Australia
| | - Ian M Adcock
- Airways Diseases Section, Faculty of Medicine, Imperial College London, National Heart and Lung Institute, London, UK
| | - Gaetano Caramori
- Pneumologia, Dipartimento di Scienze Biomediche, Odontoiatriche e delle Immagini Morfologiche e Funzionali (BIOMORF), Università degli Studi di Messina, Messina, Italy
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