1
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Salim EI, Elsebakhy S, Hessien M. Repurposing of atorvastatin and metformin denotes their individual and combined antiproliferative effects in non-small cell lung cancer. Fundam Clin Pharmacol 2024; 38:550-560. [PMID: 38258539 DOI: 10.1111/fcp.12981] [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: 05/21/2023] [Revised: 12/11/2023] [Accepted: 12/20/2023] [Indexed: 01/24/2024]
Abstract
BACKGROUND Due to the limited success in the treatment of lung adenocarcinomas, new treatment protocols are urgently needed to increase the curability rate and the survival of lung cancer patients. OBJECTIVES Although statins, like atorvastatin (Ator), and metformin (Met) are widely accepted as hypolipidemic and hypoglycemic drugs, respectively, there are many predictions about their enhancing antitumor effect when they are combined with traditional chemotherapeutics. METHODS The individual and combined antiproliferative potential of Ator and Met was tested by MTT-assay in non-small cell lung cancer (NSCLC) A549 cell line, compared to the corresponding effect of Gemcitabine (Gem) with implication on the mechanisms of action. RESULTS Initially, both drugs demonstrated concentration-dependent cytotoxicity in A549 cells. Also, their combination index (CI) indicated their synergistic effect at equi-IC50 concentration (CI = 0.00984). Moreover, Ator and/or Met-treated cells revealed disrupted patterns of SOD, CAT, GSH, MDA, and TAC, developed apoptosis, and larger fractions of the cell population were arrested in G0/G1 phase, particularly in cells dually-treated both Ator and Met. These observations were accompanied by downregulation in the expression of iNOS, HO-1, and the angiogenic marker VEGF, meanwhile, an altered expression of MAPK and AMPK was observed. CONCLUSION Conclusively, these data suggest that repurposing of Ator and Met demonstrates their individual and combined antiproliferative effect in non-small cell lung cancer and they may adopt a similar mechanism of action.
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Affiliation(s)
- Elsayed I Salim
- Zoology Department, Research Lab. of Molecular Carcinogenesis, Faculty of Science, Tanta University, Tanta, Egypt
| | - Safaa Elsebakhy
- Molecular Cell Biology Unit, Division of Biochemistry, Faculty of Science, Tanta University, Tanta, Egypt
| | - Mohamed Hessien
- Molecular Cell Biology Unit, Division of Biochemistry, Faculty of Science, Tanta University, Tanta, Egypt
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2
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Coavoy-Sanchez SA, da Costa Marques LA, Costa SKP, Muscara MN. Role of Gasotransmitters in Inflammatory Edema. Antioxid Redox Signal 2024; 40:272-291. [PMID: 36974358 DOI: 10.1089/ars.2022.0089] [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: 03/29/2023]
Abstract
Significance: Nitric oxide (NO), carbon monoxide (CO), and hydrogen sulfide (H2S) are, to date, the identified members of the gasotransmitter family, which consists of gaseous signaling molecules that play central roles in the regulation of a wide variety of physiological and pathophysiological processes, including inflammatory edema. Recent Advances: Recent studies show the potential anti-inflammatory and antiedematogenic effects of NO-, CO-, and H2S-donors in vivo. In general, it has been observed that the therapeutical effects of NO-donors are more relevant when administered at low doses at the onset of the inflammatory process. Regarding CO-donors, their antiedematogenic effects are mainly associated with inhibition of proinflammatory mediators (such as inducible NO synthase [iNOS]-derived NO), and the observed protective effects of H2S-donors seem to be mediated by reducing some proinflammatory enzyme activities. Critical Issues: The most recent investigations focus on the interactions among the gasotransmitters under different pathophysiological conditions. However, the biochemical/pharmacological nature of these interactions is neither general nor fully understood, although specifically dependent on the site where the inflammatory edema occurs. Future Directions: Considering the nature of the involved mechanisms, a deeper knowledge of the interactions among the gasotransmitters is mandatory. In addition, the development of new pharmacological tools, either donors or synthesis inhibitors of the three gasotransmitters, will certainly aid the basic investigations and open new strategies for the therapeutic treatment of inflammatory edema. Antioxid. Redox Signal. 40, 272-291.
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Affiliation(s)
| | | | - Soraia Katia Pereira Costa
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, Sao Paulo, Brazil
| | - Marcelo Nicolas Muscara
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, Sao Paulo, Brazil
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3
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Ranjana M, Sunil D. Naphthalimide derivatives as fluorescent probes for imaging endogenous gasotransmitters. Chem Biol Interact 2022; 363:110022. [PMID: 35753358 DOI: 10.1016/j.cbi.2022.110022] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 05/07/2022] [Accepted: 06/17/2022] [Indexed: 11/03/2022]
Abstract
Gasotransmitters have gained significant recognition attributed to their evident biological impacts, and is accepted as a promising and less-explored area with immense research scope. The three-member family comprising of nitric oxide, carbon monoxide and hydrogen sulphide as endogenous gaseous signaling molecules have been found to elicit a plethora of crucial biological functions, spawning a new research area. The sensing of these small molecules is vital to gain deeper insights into their functions, as they can act both as a friend or a foe in mammalian systems. The initial sections of the review present the physiological and pathophysiological roles of these endogenous gas transmitters and their synergistic interactions. Further, various detection approaches, especially the usage of fascinating features of 1,8-naphthalimide as fluorescent probe in the detection and monitoring of these small signaling molecules are highlighted. The current limitations and the future scope of improving the sensing of the three gasotransmitters are also discussed.
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Affiliation(s)
- M Ranjana
- Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, 576 104, Karnataka, India
| | - Dhanya Sunil
- Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, 576 104, Karnataka, India.
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4
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Li Y, Hemmersbach L, Krause B, Sitnikov N, Schlundt Née Göderz A, Pastene Maldonado DO, Schmalz HG, Yard B. Head-to-Head Comparison of Selected Extra- and Intracellular CO-Releasing Molecules on Their CO-Releasing and Anti-Inflammatory Properties. Chembiochem 2021; 23:e202100452. [PMID: 34643986 PMCID: PMC9298253 DOI: 10.1002/cbic.202100452] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 10/12/2021] [Indexed: 01/31/2023]
Abstract
Over the past decade, a variety of carbon monoxide releasing molecules (CORMs) have been developed and tested. Some CORMs spontaneously release CO once in solution, while others require a trigger mechanism to release the bound CO from its molecular complex. The modulation of biological systems by CORMs depends largely on the spatiotemporal release of CO, which likely differs among the different types of CORMs. In spontaneously releasing CORMs, CO is released extracellularly and crosses the cell membrane to interact with intracellular targets. Other CORMs can directly release CO intracellularly, which may be a more efficient method to modulate biological systems. In the present study, we compared the efficacy of extracellular and intracellular CO-releasing CORMs that either release CO spontaneously or require an enzymatic trigger. The efficacy of such CORMs to modulate HO-1 and VCAM-1 expression in TNF-α-stimulated human umbilical vein endothelial cells (HUVEC) was evaluated.
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Affiliation(s)
- Yingchun Li
- Vth medical Department, Medical Faculty Mannheim, University of Heidelberg, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany
| | | | | | | | | | - Diego O Pastene Maldonado
- Vth medical Department, Medical Faculty Mannheim, University of Heidelberg, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany
| | | | - Benito Yard
- Vth medical Department, Medical Faculty Mannheim, University of Heidelberg, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany
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5
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Luu Hoang KN, Anstee JE, Arnold JN. The Diverse Roles of Heme Oxygenase-1 in Tumor Progression. Front Immunol 2021; 12:658315. [PMID: 33868304 PMCID: PMC8044534 DOI: 10.3389/fimmu.2021.658315] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 03/15/2021] [Indexed: 12/16/2022] Open
Abstract
Heme oxygenase-1 (HO-1) is an inducible intracellular enzyme that is expressed in response to a variety of stimuli to degrade heme, which generates the biologically active catabolites carbon monoxide (CO), biliverdin and ferrous iron (Fe2+). HO-1 is expressed across a range of cancers and has been demonstrated to promote tumor progression through a variety of mechanisms. HO-1 can be expressed in a variety of cells within the tumor microenvironment (TME), including both the malignant tumor cells as well as stromal cell populations such as macrophages, dendritic cells and regulatory T-cells. Intrinsically to the cell, HO-1 activity provides antioxidant, anti-apoptotic and cytoprotective effects via its catabolites as well as clearing toxic intracellular heme. However, the catabolites of heme degradation can also diffuse outside of the cell to extrinsically modulate the wider TME, influencing cellular functionality and biological processes which promote tumor progression, such as facilitating angiogenesis and metastasis, as well as promoting anti-inflammation and immune suppression. Pharmacological inhibition of HO-1 has been demonstrated to be a promising therapeutic approach to promote anti-tumor immune responses and inhibit metastasis. However, these biological functions might be context, TME and cell type-dependent as there is also conflicting reports for HO-1 activity facilitating anti-tumoral processes. This review will consider our current understanding of the role of HO-1 in cancer progression and as a therapeutic target in cancer.
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Affiliation(s)
- Kim Ngan Luu Hoang
- Faculty of Life Sciences and Medicine, School of Cancer and Pharmaceutical Sciences, King's College London, London, United Kingdom
| | - Joanne E Anstee
- Faculty of Life Sciences and Medicine, School of Cancer and Pharmaceutical Sciences, King's College London, London, United Kingdom
| | - James N Arnold
- Faculty of Life Sciences and Medicine, School of Cancer and Pharmaceutical Sciences, King's College London, London, United Kingdom
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6
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Billah M, Ridiandries A, Allahwala UK, Mudaliar H, Dona A, Hunyor S, Khachigian LM, Bhindi R. Remote Ischemic Preconditioning induces Cardioprotective Autophagy and Signals through the IL-6-Dependent JAK-STAT Pathway. Int J Mol Sci 2020; 21:ijms21051692. [PMID: 32121587 PMCID: PMC7084188 DOI: 10.3390/ijms21051692] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 02/19/2020] [Accepted: 02/27/2020] [Indexed: 02/08/2023] Open
Abstract
Autophagy is a cellular process by which mammalian cells degrade and assist in recycling damaged organelles and proteins. This study aimed to ascertain the role of autophagy in remote ischemic preconditioning (RIPC)-induced cardioprotection. Sprague Dawley rats were subjected to RIPC at the hindlimb followed by a 30-min transient blockade of the left coronary artery to simulate ischemia reperfusion (I/R) injury. Hindlimb muscle and the heart were excised 24 h post reperfusion. RIPC prior to I/R upregulated autophagy in the rat heart at 24 h post reperfusion. In vitro, autophagy inhibition or stimulation prior to RIPC, respectively, either ameliorated or stimulated the cardioprotective effect, measured as improved cell viability to mimic the preconditioning effect. Recombinant interleukin-6 (IL-6) treatment prior to I/R increased in vitro autophagy in a dose-dependent manner, activating the Janus kinase/signal transducers and activators of transcription (JAK-STAT) pathway without affecting the other kinase pathways, such as p38 mitogen-activated protein kinases (MAPK), and glycogen synthase kinase 3 Beta (GSK-3β) pathways. Prior to I/R, in vitro inhibition of the JAK-STAT pathway reduced autophagy upregulation despite recombinant IL-6 pre-treatment. Autophagy is an essential component of RIPC-induced cardioprotection that may upregulate autophagy through an IL-6/JAK-STAT-dependent mechanism, thus identifying a potentially new therapeutic option for the treatment of ischemic heart disease.
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Affiliation(s)
- Muntasir Billah
- Department of Cardiology, Kolling Institute of Medical Research, Northern Sydney Local Health District, St Leonards, NSW 2065, Australia; (A.R.); (U.K.A.); (H.M.); (A.D.); (S.H.); (R.B.)
- Sydney Medical School Northern, University of Sydney, Sydney, NSW 2006, Australia
- School of Life Sciences, Independent University Bangladesh, Dhaka 1229, Bangladesh
- Correspondence:
| | - Anisyah Ridiandries
- Department of Cardiology, Kolling Institute of Medical Research, Northern Sydney Local Health District, St Leonards, NSW 2065, Australia; (A.R.); (U.K.A.); (H.M.); (A.D.); (S.H.); (R.B.)
- Sydney Medical School Northern, University of Sydney, Sydney, NSW 2006, Australia
| | - Usaid K Allahwala
- Department of Cardiology, Kolling Institute of Medical Research, Northern Sydney Local Health District, St Leonards, NSW 2065, Australia; (A.R.); (U.K.A.); (H.M.); (A.D.); (S.H.); (R.B.)
- Sydney Medical School Northern, University of Sydney, Sydney, NSW 2006, Australia
| | - Harshini Mudaliar
- Department of Cardiology, Kolling Institute of Medical Research, Northern Sydney Local Health District, St Leonards, NSW 2065, Australia; (A.R.); (U.K.A.); (H.M.); (A.D.); (S.H.); (R.B.)
| | - Anthony Dona
- Department of Cardiology, Kolling Institute of Medical Research, Northern Sydney Local Health District, St Leonards, NSW 2065, Australia; (A.R.); (U.K.A.); (H.M.); (A.D.); (S.H.); (R.B.)
| | - Stephen Hunyor
- Department of Cardiology, Kolling Institute of Medical Research, Northern Sydney Local Health District, St Leonards, NSW 2065, Australia; (A.R.); (U.K.A.); (H.M.); (A.D.); (S.H.); (R.B.)
| | - Levon M. Khachigian
- Vascular Biology and Translational Research, School of Medical Sciences, University of New South Wales, Sydney, NSW 2052, Australia;
| | - Ravinay Bhindi
- Department of Cardiology, Kolling Institute of Medical Research, Northern Sydney Local Health District, St Leonards, NSW 2065, Australia; (A.R.); (U.K.A.); (H.M.); (A.D.); (S.H.); (R.B.)
- Sydney Medical School Northern, University of Sydney, Sydney, NSW 2006, Australia
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7
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P2X7 Receptors Mediate CO-Induced Alterations in Gene Expression in Cultured Cortical Astrocytes—Transcriptomic Study. Mol Neurobiol 2018; 56:3159-3174. [DOI: 10.1007/s12035-018-1302-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 08/06/2018] [Indexed: 01/31/2023]
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8
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Ha Y, Lee Y, Suh M. Insertable NO/CO Microsensors Recording Gaseous Vasomodulators Reflecting Differential Neuronal Activation Level with Respect to Seizure Focus. ACS Chem Neurosci 2017; 8:1853-1858. [PMID: 28661136 DOI: 10.1021/acschemneuro.7b00141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Nitric oxide (NO) and carbon monoxide (CO) are important signaling molecules shaping vasomodulation. This paper reports simultaneous in vivo monitoring of NO, CO and dendritic summation of action potential at three different cortical regions: seizure focus and two additional places, vertically and horizontally separated by 1.2 mm from the seizure focus, during epileptic seizure induced by 4-aminopyrindine injection. An amperometric dual microsensor having a high spatiotemporal resolution monitored fast and dynamic changes of NO and CO, and neural changes were recorded with a glass pipet electrode for local field potential (LFP). At all three locations, onsets and offsets of NO and CO changes well synchronized with fast LFP changes, while the patterns and concentrations of NO and CO changes were varied depending on the sensing locations. The insertable NO/CO dual microsensor was successful to measure intimately linked NO and CO in acute seizure events with high sensitivity, selectivity, and spatiotemporal resolution.
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Affiliation(s)
- Yejin Ha
- Department
of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Youngmi Lee
- Department
of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Minah Suh
- Center
for Neuroscience Imaging Research, Institute for Basic Science (IBS), Suwon 16419, Republic of Korea
- Department
of Biomedical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
- Samsung
Advanced Institute of Health Science and Technology (SAIHST), Sungkyunkwan University, Suwon 16419, Republic of Korea
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9
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Kemelo MK, Pierzynová A, Kutinová Canová N, Kučera T, Farghali H. The involvement of sirtuin 1 and heme oxygenase 1 in the hepatoprotective effects of quercetin against carbon tetrachloride-induced sub-chronic liver toxicity in rats. Chem Biol Interact 2017; 269:1-8. [DOI: 10.1016/j.cbi.2017.03.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 03/09/2017] [Accepted: 03/23/2017] [Indexed: 12/27/2022]
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10
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Role of Gasotransmitters in Oxidative Stresses, Neuroinflammation, and Neuronal Repair. BIOMED RESEARCH INTERNATIONAL 2017; 2017:1689341. [PMID: 28386548 PMCID: PMC5366188 DOI: 10.1155/2017/1689341] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 01/12/2017] [Accepted: 02/07/2017] [Indexed: 12/21/2022]
Abstract
To date, three main gasotransmitters, that is, hydrogen sulfide (H2S), carbon monoxide (CO), and nitric oxide (NO), have been discovered to play major bodily physiological roles. These gasotransmitters have multiple functional roles in the body including physiologic and pathologic functions with respect to the cellular or tissue quantities of these gases. Gasotransmitters were originally known to have only detrimental and noxious effects in the body but that notion has much changed with years; vast studies demonstrated that these gasotransmitters are precisely involved in the normal physiological functioning of the body. From neuromodulation, oxidative stress subjugation, and cardiovascular tone regulation to immunomodulation, these gases perform critical roles, which, should they deviate from the norm, can trigger the genesis of a number of neurodegenerative diseases such as Alzheimer's disease (AD) and Parkinson's disease (PD). The purpose of this review is to discuss at great length physical and chemical properties and physiological actions of H2S, NO, and CO as well as shedding light on recently researched molecular targets. We particularly put emphasis on the roles in neuronal inflammation and neurodegeneration and neuronal repair.
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11
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Němeček D, Dvořáková M, Sedmíková M. Heme oxygenase/carbon monoxide in the female reproductive system: an overlooked signalling pathway. INTERNATIONAL JOURNAL OF BIOCHEMISTRY AND MOLECULAR BIOLOGY 2017; 8:1-12. [PMID: 28123837 PMCID: PMC5259583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 11/23/2016] [Indexed: 06/06/2023]
Abstract
For a long time, carbon monoxide (CO) was known for its toxic effect on organisms. But there are still many things left to discover on that molecule. CO is formed directly in the body by the enzymatic activity of heme oxygenase (HO). CO plays an important role in many physiological processes, such as cell protections (against various stress factors), and the regulation of metabolic processes. Recent research proves that CO also operates in the female reproductive system. At the centre of interest is the importance of CO for gestation. During the gestation period, CO is an important element affecting the proper function of the feto-placental unit and generally affects fetal survivability rates. Gestation is one of the most important processes of successful reproduction, although there are more relevant processes that need to be researched. While already proven that CO influences steroidogenesis and the corpus luteum survivability rate, our knowledge concerning the function and importance of CO in the reproductive system is still relatively limited. As an example, our knowledge of CO function in an oocyte, the most important cell for reproduction, is almost non-existent. The aim of this review is to summarize our current knowledge concerning the function of CO in the female reproductive system.
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Affiliation(s)
- David Němeček
- Department of Veterinary Sciences, Czech University of Life Sciences Prague, Czech Republic
| | - Markéta Dvořáková
- Department of Veterinary Sciences, Czech University of Life Sciences Prague, Czech Republic
| | - Markéta Sedmíková
- Department of Veterinary Sciences, Czech University of Life Sciences Prague, Czech Republic
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12
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Lewis AJ, Billiar TR, Rosengart MR. Biology and Metabolism of Sepsis: Innate Immunity, Bioenergetics, and Autophagy. Surg Infect (Larchmt) 2016; 17:286-93. [PMID: 27093228 DOI: 10.1089/sur.2015.262] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Sepsis is a complex, heterogeneous physiologic condition that represents a significant public health concern. While many insights into the pathophysiology of sepsis have been elucidated over the past decades of research, important questions remain. This article serves as a review of several important areas in sepsis research. Understanding the innate immune response has been at the forefront as of late, especially in the context of cytokine-directed therapeutic trials. Cellular bioenergetic changes provide insight into the development of organ dysfunction in sepsis. Autophagy and mitophagy perform crucial cell housekeeping and stress response functions. Finally, age-related changes and their potential impact on the septic response are reviewed.
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Affiliation(s)
- Anthony J Lewis
- Department of Surgery, University of Pittsburgh , Pittsburgh, Pennsylvania
| | - Timothy R Billiar
- Department of Surgery, University of Pittsburgh , Pittsburgh, Pennsylvania
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13
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Moustafa A, Habara Y. Reciprocal interaction among gasotransmitters in isolated pancreatic β-cells. Free Radic Biol Med 2016; 90:47-58. [PMID: 26577175 DOI: 10.1016/j.freeradbiomed.2015.11.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 11/04/2015] [Accepted: 11/09/2015] [Indexed: 11/28/2022]
Abstract
We aimed to elucidate the interplay among the three well-known gas molecules, nitric oxide (NO), carbon monoxide (CO) and hydrogen sulfide (H2S), and their effects on intracellular Ca(2+) concentration ([Ca(2+)]i) and insulin secretion in rat pancreatic β-cells. Immunofluorescence studies demonstrated the expression of constitutive enzymes that are responsible for the production of NO, CO and H2S. CO and H2S increased NO production as indicated by the increase in diaminofluorescein-2 triazole fluorescence. NO and CO induced an elevation in the sulfane sulfur pool and concomitantly H2S production. The NO- and CO-induced H2S production was partially inhibited by hypotaurine, an H2S scavenger. NO and H2S produced CO production as revealed by a myoglobin assay. A calmodulin antagonist in the absence of extracellular Ca(2+) significantly attenuated NO and H2S production. NO and CO induced a [Ca(2+)]i increase mainly via Ca(2+) release from internal stores; however, H2S induced a [Ca(2+)]i increase via the influx of extracellular Ca(2+). NO dose-dependently stimulated basal insulin release but CO dose-dependently inhibited it. H2S showed an insignificant effect on basal insulin secretion from freshly isolated pancreatic islets. Herein, we address for the first time the reciprocal and synergistic relation among gasotransmitters with diverse effects on basal insulin secretion that regulate β-cells functions and homeostasis.
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Affiliation(s)
- Amira Moustafa
- Laboratory of Physiology, Department of Biomedical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Japan; Department of Physiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44519, Egypt
| | - Yoshiaki Habara
- Laboratory of Physiology, Department of Biomedical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Japan.
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14
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Basudhar D, Ridnour LA, Cheng R, Kesarwala AH, Heinecke J, Wink DA. Biological signaling by small inorganic molecules. Coord Chem Rev 2016; 306:708-723. [PMID: 26688591 PMCID: PMC4680994 DOI: 10.1016/j.ccr.2015.06.001] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Small redox active molecules such as reactive nitrogen and oxygen species and hydrogen sulfide have emerged as important biological mediators that are involved in various physiological and pathophysiological processes. Advancement in understanding of cellular mechanisms that tightly regulate both generation and reactivity of these molecules is central to improved management of various disease states including cancer and cardiovascular dysfunction. Imbalance in the production of redox active molecules can lead to damage of critical cellular components such as cell membranes, proteins and DNA and thus may trigger the onset of disease. These small inorganic molecules react independently as well as in a concerted manner to mediate physiological responses. This review provides a general overview of the redox biology of these key molecules, their diverse chemistry relevant to physiological processes and their interrelated nature in cellular signaling.
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Affiliation(s)
- Debashree Basudhar
- Radiation Biology Branch, National Cancer Institute, NIH, Bethesda, MD 20892
| | - Lisa A. Ridnour
- Radiation Biology Branch, National Cancer Institute, NIH, Bethesda, MD 20892
| | - Robert Cheng
- Radiation Biology Branch, National Cancer Institute, NIH, Bethesda, MD 20892
| | - Aparna H. Kesarwala
- Radiation Oncology Branch, National Cancer Institute, NIH, Bethesda, MD 20892
| | - Julie Heinecke
- Radiation Biology Branch, National Cancer Institute, NIH, Bethesda, MD 20892
| | - David A. Wink
- Radiation Biology Branch, National Cancer Institute, NIH, Bethesda, MD 20892
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15
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Yang J, Wang Y, Sui M, Liu F, Fu Z, Wang QX. Tri-iodothyronine preconditioning protects against liver ischemia reperfusion injury through the regulation of autophagy by the MEK/ERK/mTORC1 axis. Biochem Biophys Res Commun 2015; 467:704-10. [PMID: 26498520 DOI: 10.1016/j.bbrc.2015.10.080] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Accepted: 10/16/2015] [Indexed: 12/22/2022]
Abstract
BACKGROUND AND OBJECTIVES The autophagy pathway has previously been suggested as an important protective factor in liver injury. The purpose of this study is to demonstrate the protective, autophagy-modulating effect of tri-iodothyronine (T3) on liver ischemia reperfusion injury. METHODS Liver ischemia reperfusion was induced in male C57BL/6 mice after T3 administration. Liver function, histological damage, inflammatory infiltration, cytokine production, oxidative stress, antioxidant capacity, autophagy changing, and autophagy-associated intracellular signaling pathway were assessed to evaluate the impact of antecedent T3 treatment on ischemia reperfusion induced liver injury. RESULTS After 70% liver ischemia reperfusion injury, mice that were preconditioned with appropriate T3 displayed significantly preserved liver function, less histological damage, less apoptosis, and enhanced antioxidant capacity. Further studies revealed that mice which were preconditioned with T3 before IR induction exhibited an increased level of autophagy mediated by MEK/ERK/mTORC1. CONCLUSIONS Our results provide the first line of evidence indicating that antecedent T3 injection can provide protection for the liver against ischemia reperfusion induced injury by enhancing autophagy. Therefore, T3 preconditioning could be a potential therapeutic approach to prevent liver IR injury related to various clinical conditions.
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Affiliation(s)
- Jinghui Yang
- Department of Organ Transplantation, Shanghai ChangZheng Hospital, Second Military Medical University, Shanghai, China
| | - Yang Wang
- Department of Organ Transplantation, Shanghai ChangZheng Hospital, Second Military Medical University, Shanghai, China
| | - Mingxing Sui
- Department of Organ Transplantation, Shanghai ChangZheng Hospital, Second Military Medical University, Shanghai, China
| | - Fang Liu
- Department of Organ Transplantation, Shanghai ChangZheng Hospital, Second Military Medical University, Shanghai, China
| | - Zhiren Fu
- Department of Organ Transplantation, Shanghai ChangZheng Hospital, Second Military Medical University, Shanghai, China.
| | - Quan-Xing Wang
- National Key Laboratory of Medical Immunology, Second Military Medical University, Shanghai, China.
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Jahn N, Lamberts RR, Busch CJ, Voelker MT, Busch T, Koel-Simmelink MJA, Teunissen CE, Oswald DD, Loer SA, Kaisers UX, Weimann J. Inhaled carbon monoxide protects time-dependently from loss of hypoxic pulmonary vasoconstriction in endotoxemic mice. Respir Res 2015; 16:119. [PMID: 26415503 PMCID: PMC4587582 DOI: 10.1186/s12931-015-0274-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Accepted: 09/07/2015] [Indexed: 11/30/2022] Open
Abstract
Background Inhaled carbon monoxide (CO) appears to have beneficial effects on endotoxemia-induced impairment of hypoxic pulmonary vasoconstriction (HPV). This study aims to specify correct timing of CO application, it’s biochemical mechanisms and effects on inflammatory reactions. Methods Mice (C57BL/6; n = 86) received lipopolysaccharide (LPS, 30 mg/kg) intraperitoneally and subsequently breathed 50 ppm CO continuously during defined intervals of 3, 6, 12 or 18 h. Two control groups received saline intraperitoneally and additionally either air or CO, and one control group received LPS but breathed air only. In an isolated lung perfusion model vasoconstrictor response to hypoxia (FiO2 = 0.01) was quantified by measurements of pulmonary artery pressure. Pulmonary capillary pressure was estimated by double occlusion technique. Further, inflammatory plasma cytokines and lung tissue mRNA of nitric-oxide-synthase-2 (NOS-2) and heme oxygenase-1 (HO-1) were measured. Results HPV was impaired after LPS-challenge (p < 0.01). CO exposure restored HPV-responsiveness if administered continuously for full 18 h, for the first 6 h and if given in the interval between the 3rd and 6th hour after LPS-challenge (p < 0.05). Preserved HPV was attributable to recovered arterial resistance and associated with significant reduction in NOS-2 mRNA when compared to controls (p < 0.05). We found no effects on inflammatory plasma cytokines. Conclusion Low-dose CO prevented LPS-induced impairment of HPV in a time-dependent manner, associated with a decreased NOS-2 expression.
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Affiliation(s)
- Nora Jahn
- Department of Anaesthesiology and Intensive Care Medicine, University of Leipzig, Leipzig, Germany.
| | - Regis R Lamberts
- Department of Anaesthesiology, Institute for Cardiovascular Research (ICaR-VU), VU University Medical Centre, Amsterdam, The Netherlands.
| | - Cornelius J Busch
- Department of Anaesthesiology, Ruprecht-Karls-University, Heidelberg, Germany.
| | - Maria T Voelker
- Department of Anaesthesiology and Intensive Care Medicine, University of Leipzig, Leipzig, Germany.
| | - Thilo Busch
- Department of Anaesthesiology and Intensive Care Medicine, University of Leipzig, Leipzig, Germany.
| | - Marleen J A Koel-Simmelink
- Department of Clinical Chemistry, Neurological Laboratory and Biobank, VU University Medical Centre, Amsterdam, The Netherlands.
| | - Charlotte E Teunissen
- Department of Clinical Chemistry, Neurological Laboratory and Biobank, VU University Medical Centre, Amsterdam, The Netherlands.
| | - Daniel D Oswald
- Department of Anaesthesiology, Universitätsklinikum, Münster, Germany.
| | - Stephan A Loer
- Department of Anaesthesiology, Institute for Cardiovascular Research (ICaR-VU), VU University Medical Centre, Amsterdam, The Netherlands.
| | - Udo X Kaisers
- Department of Anaesthesiology and Intensive Care Medicine, University of Leipzig, Leipzig, Germany.
| | - Jörg Weimann
- Department of Anaesthesia and Intensive Care Medicine, Sankt Gertrauden-Krankenhaus, Berlin, Germany.
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Almeida AS, Vieira HLA. Assessment of mitochondrial protein glutathionylation as signaling for CO pathway. Methods Mol Biol 2015; 1264:343-350. [PMID: 25631027 DOI: 10.1007/978-1-4939-2257-4_30] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Protein glutathionylation is a posttranslational process that regulates protein function in response to redox cellular changes. Furthermore, carbon monoxide-induced cellular pathways involve reactive oxygen species (ROS) signaling and mitochondrial protein glutathionylation. Herein, it is described a technique to assess mitochondrial glutathionylation due to low concentrations of CO exposure. Mitochondria are isolated from cell culture or tissue, followed by an immunoprecipitation assay, which allows the capture of any glutathionylated mitochondrial protein using a specific antibody coupled to a solid matrix that binds to glutathione antigen. The precipitated protein is further identified and quantified by immunoblotting analysis.
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Affiliation(s)
- Ana S Almeida
- Chronic Diseases Research Center (CEDOC), Faculdade de Ciências Médicas, Universidade Nova de Lisboa, Campo Mártires da Pátria 130, 1169-056, Lisboa, Portugal
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Carbon monoxide is not always a poison gas for human organism: Physiological and pharmacological features of CO. Chem Biol Interact 2014; 222:37-43. [DOI: 10.1016/j.cbi.2014.08.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Revised: 08/02/2014] [Accepted: 08/18/2014] [Indexed: 01/21/2023]
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Wang Y, Shen J, Xiong X, Xu Y, Zhang H, Huang C, Tian Y, Jiao C, Wang X, Li X. Remote ischemic preconditioning protects against liver ischemia-reperfusion injury via heme oxygenase-1-induced autophagy. PLoS One 2014; 9:e98834. [PMID: 24914543 PMCID: PMC4051645 DOI: 10.1371/journal.pone.0098834] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Accepted: 05/07/2014] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Growing evidence has linked autophagy to a protective role of preconditioning in liver ischemia/reperfusion (IR). Heme oxygenase-1 (HO-1) is essential in limiting inflammation and preventing the apoptotic response to IR. We previously demonstrated that HO-1 is up-regulated in liver graft after remote ischemic preconditioning (RIPC). The aim of this study was to confirm that RIPC protects against IR via HO-1-mediated autophagy. METHODS RIPC was performed with regional ischemia of limbs before liver ischemia, and HO-1 activity was inhibited pre-operation. Autophagy was assessed by the expression of light chain 3-II (LC3-II). The HO-1/extracellular signal-related kinase (ERK)/p38/mitogen-activated protein kinase (MAPK) pathway was detected in an autophagy model and mineral oil-induced IR in vitro. RESULTS In liver IR, the expression of LC3-II peaked 12-24 h after IR, and the ultrastructure revealed abundant autophagosomes in hepatocytes after IR. Autophagy was inhibited when HO-1 was inactivated, which we believe resulted in the aggravation of liver IR injury (IRI) in vivo. Hemin-induced autophagy also protected rat hepatocytes from IRI in vitro, which was abrogated by HO-1 siRNA. Phosphorylation of p38-MAPK and ERK1/2 was up-regulated in hemin-pretreated liver cells and down-regulated after treatment with HO-1 siRNA. CONCLUSIONS RIPC may protect the liver from IRI by induction of HO-1/p38-MAPK-dependent autophagy.
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Affiliation(s)
- Yun Wang
- Department of Oncological Surgery 2, Xuzhou City Central Hospital, The Affiliated Hospital of the Southeast University Medical School (Xuzhou), The Tumor Research Institute of the Southeast University (Xuzhou), Xuzhou, Jiangsu Province, China
| | - Jian Shen
- Department of General Surgery, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Xuanxuan Xiong
- Department of Gastroenterology II, Xuzhou City Central Hospital, The Affiliated Hospital of the Southeast University Medical School (Xuzhou), Xuzhou, Jiangsu Province, China
| | - Yonghua Xu
- Department of General Surgery, Yancheng First People's Hospital, Yancheng, Jiangsu Province, China
| | - Hai Zhang
- Department of General Surgery, The First Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu Province, China
| | - Changjun Huang
- Key Laboratory of Living Donor Liver Transplantation, Ministry of Public Health, Department of Liver Transplantation Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Yuan Tian
- Key Laboratory of Living Donor Liver Transplantation, Ministry of Public Health, Department of Liver Transplantation Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Chengyu Jiao
- Key Laboratory of Living Donor Liver Transplantation, Ministry of Public Health, Department of Liver Transplantation Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Xuehao Wang
- Key Laboratory of Living Donor Liver Transplantation, Ministry of Public Health, Department of Liver Transplantation Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Xiangcheng Li
- Key Laboratory of Living Donor Liver Transplantation, Ministry of Public Health, Department of Liver Transplantation Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
- * E-mail:
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Snijder PM, van den Berg E, Whiteman M, Bakker SJL, Leuvenink HGD, van Goor H. Emerging role of gasotransmitters in renal transplantation. Am J Transplant 2013; 13:3067-75. [PMID: 24266966 DOI: 10.1111/ajt.12483] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Revised: 08/21/2013] [Accepted: 08/21/2013] [Indexed: 01/25/2023]
Abstract
Once patients with kidney disease progress to end-stage renal failure, transplantation is the preferred option of treatment resulting in improved quality of life and reduced mortality compared to dialysis. Although 1-year survival has improved considerably, graft and patient survival in the long term have not been concurrent, and therefore new tools to improve long-term graft and patient survival are warranted. Over the past decades, the gasotransmitters nitric oxide (NO), carbon monoxide (CO) and hydrogen sulfide (H2S) have emerged as potent cytoprotective mediators in various diseases. All three gasotransmitters are endogenously produced messenger molecules that possess vasodilatory, anti-apoptotic, anti-inflammatory and anti-oxidant properties by influencing an array of intracellular signaling processes. Although many regulatory functions of gasotransmitters have overlapping actions, differences have also been reported. In addition, crosstalk between NO, CO and H2S results in synergistic regulatory effects. Endogenous and exogenous manipulation of gasotransmitter levels modulates several processes involved in renal transplantation. This review focuses on mechanisms of gas-mediated cytoprotection and complex interactions between gasotransmitters in renal transplantation.
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Affiliation(s)
- P M Snijder
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands; Department of Surgery, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
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The induction of heme oxygenase-1 suppresses heat shock protein 90 and the proliferation of human breast cancer cells through its byproduct carbon monoxide. Toxicol Appl Pharmacol 2013; 274:55-62. [PMID: 24211270 DOI: 10.1016/j.taap.2013.10.027] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Revised: 10/09/2013] [Accepted: 10/28/2013] [Indexed: 11/24/2022]
Abstract
Heme oxygenase (HO)-1 is an oxidative stress-response enzyme which catalyzes the degradation of heme into bilirubin, ferric ion, and carbon monoxide (CO). Induction of HO-1 was reported to have antitumor activity; the inhibitory mechanism, however, is still unclear. In the present study, we found that treatment with [Ru(CO)3Cl2]2 (RuCO), a CO-releasing compound, reduced the growth of human MCF7 and MDA-MB-231 breast cancer cells. Analysis of growth-related proteins showed that treatment with RuCO down-regulated cyclinD1, CDK4, and hTERT protein expressions. Interestingly, RuCO treatment resulted in opposite effects on wild-type and mutant p53 proteins. These results were similar to those of cells treated with geldanamycin (a heat shock protein (HSP)90 inhibitor), suggesting that RuCO might affect HSP90 activity. Moreover, RuCO induced mutant p53 protein destabilization accompanied by promotion of ubiquitination and proteasome degradation. The induction of HO-1 by cobalt protoporphyrin IX (CoPP) showed consistent results, while the addition of tin protoporphyrin IX (SnPP), an HO-1 enzymatic inhibitor, diminished the RuCO-mediated effect. RuCO induction of HO-1 expression was reduced by a p38 mitogen-activated protein kinase inhibitor (SB203580). Additionally, treatment with a chemopreventive compound, curcumin, induced HO-1 expression accompanied with reduction of HSP90 client protein expression. The induction of HO-1 by curcumin inhibited 12-O-tetradecanoyl-13-acetate (TPA)-elicited matrix metalloproteinase-9 expression and tumor invasion. In conclusion, we provide novel evidence underlying HO-1's antitumor mechanism. CO, a byproduct of HO-1, suppresses HSP90 protein activity, and the induction of HO-1 may possess potential as a cancer therapeutic.
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Seto H, Kondo T, Yuasa M. Sensitive and selective electrochemical detection of carbon monoxide in saline at a Pt-Ru/Nafion/MnO2-modified electrode. ANAL SCI 2012; 28:115-20. [PMID: 22322802 DOI: 10.2116/analsci.28.115] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
We fabricated a sensitive and selective electrochemical carbon monoxide (CO) sensor for physiological conditions based on the Pt-Ru system. At a bare Pt-Ru electrode, a linear amperometric response to CO concentration was obtained in the range of 0.9-9 µM. However, significant current response to model electroactive interferents for physiological conditions, uric acid (UA), ascorbic acid (AA) and hydrogen peroxide (HP), was also recorded at the Pt-Ru electrode. The response to UA and AA was highly suppressed by coating the Pt-Ru electrode surface with a Nafion layer, and the response to HP was almost completely eliminated by the additional coating with a MnO(2)/chitosan layer. Finally, at the Pt-Ru/Nafion/MnO(2) electrode, amperometric CO detection with a sensitivity of 173 nA cm(-2) µM(-1) was obtained in the concentration range of 0.9-9 µM with the UA, AA and HP signal being below 1.7% at the same concentration of CO.
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Affiliation(s)
- Hirosato Seto
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278–8510, Japan
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23
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Romanski S, Kraus B, Guttentag M, Schlundt W, Rücker H, Adler A, Neudörfl JM, Alberto R, Amslinger S, Schmalz HG. Acyloxybutadiene tricarbonyl iron complexes as enzyme-triggered CO-releasing molecules (ET-CORMs): a structure–activity relationship study. Dalton Trans 2012; 41:13862-75. [DOI: 10.1039/c2dt30662j] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Heme oxygenase-1 inhibits progression and destabilization of vulnerable plaques in a rabbit model of atherosclerosis. Eur J Pharmacol 2011; 672:143-52. [DOI: 10.1016/j.ejphar.2011.09.188] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2011] [Revised: 09/23/2011] [Accepted: 09/30/2011] [Indexed: 12/29/2022]
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Srisook K, Palachot M, Mongkol N, Srisook E, Sarapusit S. Anti-inflammatory effect of ethyl acetate extract from Cissus quadrangularis Linn may be involved with induction of heme oxygenase-1 and suppression of NF-κB activation. JOURNAL OF ETHNOPHARMACOLOGY 2011; 133:1008-1014. [PMID: 21094244 DOI: 10.1016/j.jep.2010.11.029] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2010] [Revised: 11/11/2010] [Accepted: 11/11/2010] [Indexed: 05/30/2023]
Abstract
AIM OF THE STUDY Cissus quadrangularis (family: Vitaceae) has been widely used in traditional herbal medicine for the treatment of hemorrhoids, gastric ulcers and bone healing. In the present study, we determined the anti-inflammatory activity and the molecular mechanism of the ethyl acetate extract of Cissus quadrangularis stem (CQE) in LPS-stimulated RAW 264.7 macrophage cells. MATERIALS AND METHODS The inhibitory effect of CQE on LPS-induced nitric oxide (NO) production was evaluated in conditioned media. Cell viability was monitored by MTT assay. Protein and mRNA expressions were determined by RT-PCR and Western blotting analysis, respectively. RESULTS CQE potently inhibited lipopolysaccharide (LPS)-induced nitric oxide (NO) production in RAW 264.7 macrophage cells in a dose-dependent manner. The mRNA and protein expressions of inducible nitric oxide synthase (iNOS) were suppressed also by CQE as was p65 NF-κB nuclear translocation. Further study demonstrated that CQE by itself induced heme oxygenase-1 (HO-1) gene expression at the protein and mRNA levels in dose- and time-dependent manner. In addition, the inhibitory effects of CQE on NO production were abrogated by a HO-1 inhibitor, zinc protoporphyrin IX (ZnPP). CONCLUSIONS Collectively, these results suggest that CQE exerts an anti-inflammatory effect in macrophages, at least in part, through the induction of HO-1 expression. These findings provide the scientific rationale for anti-inflammatory therapeutic use of Cissus quadrangularis stem.
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Affiliation(s)
- Klaokwan Srisook
- Department of Biochemistry Faculty of Science, Burapha University, Saensook, Muang, Chonburi 20131, Thailand.
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Klug K, Ehlers S, Uhlig S, Reiling N. Mitogen-activated protein kinases p38 and ERK1/2 regulated control of Mycobacterium avium replication in primary murine macrophages is independent of tumor necrosis factor-α and interleukin-10. Innate Immun 2010; 17:470-85. [PMID: 20682586 DOI: 10.1177/1753425910377799] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
In macrophages, mitogen-activated protein kinases (MAPK) are critical regulators of both, mycobacterial replication and mycobacteria-induced cytokine formation. To segregate direct effects of MAPK function on mycobacterial replication from indirect, cytokine-mediated effects, we studied the growth of Mycobacterium avium strains in wild-type and tumor necrosis factor (TNF)-α- or interleukin (IL)-10-deficient bone marrow-derived murine macrophages. Using specific inhibitors of the p38- and the ERK1/2-MAPK pathways, we found that the use of SB203580 always reduced, whereas the presence of PD98059 always promoted, bacterial replication of highly virulent and intermediately virulent M. avium strains, independent of endogenous TNF-α or IL-10. The exogenous addition of TNF-α to TNF-α-deficient and wild-type M. avium-infected macrophages overrode the replication-reducing effect of SB203580, but not the replication-promoting effect of PD98059. In summary, our data demonstrate that a proper balance of MAPK activity is essential for macrophage control of M. avium growth, and that the ratio of the cytokines TNF-α and IL-10 can additionally modulate replication. Our findings indicate a novel therapeutic avenue for treating mycobacterial infections in particular by stimulating ERK1/2 or activating ERK1/2-dependent mechanisms in infected macrophages.
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Affiliation(s)
- Kirsten Klug
- Division of Microbial Interface Biology, Research Center Borstel, Leibniz-Center for Medicine and Biosciences, Borstel, Germany
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Sabat J, Stuehr DJ, Yeh SR, Rousseau DL. Characterization of the proximal ligand in the P420 form of inducible nitric oxide synthase. J Am Chem Soc 2009; 131:12186-92. [PMID: 19658411 DOI: 10.1021/ja901016a] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The nitric oxide (NO) produced by inducible nitric oxide synthase (iNOS) up-regulates the expression of heme oxygenase (HO), which in turn produces carbon monoxide (CO) that down-regulates iNOS activity by reducing its expression level or by inhibiting its activity by converting it to an inactive P420 form (iNOS(P420)). Accordingly, CO has been considered as a potentially important attenuator of inflammation. Despite its importance, the nature of the proximal heme ligand of the iNOS(P420) species remains elusive. Here we show that the 221 cm(-1) mode of the photoproduct of iNOS(P420) does not exhibit any H(2)O-D(2)O solvent isotope shift such as that found in the iron-histidine stretching mode of myoglobin, indicating that the proximal ligand of iNOS(P420) is not a histidine. The nu(Fe-CO) and nu(C-O) data reveal that the proximal heme ligand of iNOS(P420) is consistent with a protonated thiol instead of a thiolate anion. Furthermore, the optical absorption properties of iNOS(P420) are similar to those of a neutral thiol-heme model complex but not myoglobin. Together the data support the scenario that iNOS(P420) is inactivated by protonation of the native proximal thiolate ligand to a neutral thiol, instead of by ligand switching to a histidine, as prior studies have suggested.
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Affiliation(s)
- Joseph Sabat
- Department of Physiology and Biophysics, Albert Einstein College of Medicine, Bronx, New York 10461, USA
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Pan X, Wang X, Lei W, Min L, Yang Y, Wang X, Song J. Nitric oxide suppresses transforming growth factor-beta1-induced epithelial-to-mesenchymal transition and apoptosis in mouse hepatocytes. Hepatology 2009; 50:1577-87. [PMID: 19821529 DOI: 10.1002/hep.23156] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
UNLABELLED Nitric oxide (NO) is a multifunctional regulator that is implicated in various physiological and pathological processes. Here we report that administration of NO donor S-nitroso-N-acetylpenicillamine (SNAP) inhibited transforming growth factor-beta1 (TGF-beta1)-induced epithelial-to-mesenchymal transition (EMT) and apoptosis in mouse hepatocytes. Overexpression of inducible NO synthase (iNOS) by transfection of the iNOS-expressing vector, which increased NO production, also inhibited the TGF-beta1-induced EMT and apoptosis in these cells. Treatment of cells with proinflammatory mediators, including tumor necrosis factor (TNF)-alpha, interleukin (IL)-1beta, and interferon (IFN)-gamma, which increased the endogenous NO production, produced the same inhibitory effect. Furthermore, exogenous NO donor SNAP treatment caused a decrease in the intracellular adenosine triphosphate (ATP) levels. Consistently, depletion of intracellular ATP by mitochondrial uncoupler carbonyl cyanide p-trifluoromethoxyphenylhydrazone (FCCP) inhibited the TGF-beta1-induced EMT and apoptosis, suggesting that an NO-induced decrease of ATP involved in the NO-mediated inhibition of TGF-beta1-induced EMT and apoptosis. NO and FCCP also inhibited TGF-beta1-induced STAT3 activation, suggesting that signal transducer and activator of transcription 3 inactivation is involved in the NO-induced effects on TGF-beta1-induced EMT and apoptosis. CONCLUSION Our study indicates that NO plays an important role in the inhibition of TGF-beta1-induced EMT and apoptosis in mouse hepatocytes through the downregulation of intracellular ATP levels. The data provide an insight into the in vivo mechanisms on the function of NO during the processes of both EMT and apoptosis.
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Affiliation(s)
- Xinchao Pan
- Laboratory of Molecular Cell Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, P.R. China
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Suliburk JW, Ward JL, Helmer KS, Adams SD, Zuckerbraun BS, Mercer DW. Ketamine-induced hepatoprotection: the role of heme oxygenase-1. Am J Physiol Gastrointest Liver Physiol 2009; 296:G1360-9. [PMID: 19372106 PMCID: PMC2697945 DOI: 10.1152/ajpgi.00038.2009] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Lipopolysaccharide (LPS) causes hepatic injury that is mediated, in part, by upregulation of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2). Ketamine has been shown to prevent these effects. Because upregulation of heme oxygenase-1 (HO-1) has hepatoprotective effects, as does carbon monoxide (CO), an end product of the HO-1 catalytic reaction, we examined the effects of HO-1 inhibition on ketamine-induced hepatoprotection and assessed whether CO could attenuate LPS-induced hepatic injury. One group of rats received ketamine (70 mg/kg ip) or saline concurrently with either the HO-1 inhibitor tin protoporphyrin IX (50 micromol/kg ip) or saline. Another group of rats received inhalational CO (250 ppm over 1 h) or room air. All rats were given LPS (20 mg/kg ip) or saline 1 h later and euthanized 5 h after LPS or saline. Liver was collected for iNOS, COX-2, and HO-1 (Western blot), NF-kappaB and PPAR-gamma analysis (EMSA), and iNOS and COX-2 mRNA analysis (RT-PCR). Serum was collected to measure alanine aminotransferase as an index of hepatocellular injury. HO-1 inhibition attenuated ketamine-induced hepatoprotection and downregulation of iNOS and COX-2 protein. CO prevented LPS-induced hepatic injury and upregulation of iNOS and COX-2 proteins. Although CO abolished the ability of LPS to diminish PPAR-gamma activity, it enhanced NF-kappaB activity. These data suggest that the hepatoprotective effects of ketamine are mediated primarily by HO-1 and its end product CO.
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Affiliation(s)
- James W. Suliburk
- Department of Surgery, The University of Texas Medical School at Houston, Houston, Texas; and Department of Surgery, The University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Jeremy L. Ward
- Department of Surgery, The University of Texas Medical School at Houston, Houston, Texas; and Department of Surgery, The University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Kenneth S. Helmer
- Department of Surgery, The University of Texas Medical School at Houston, Houston, Texas; and Department of Surgery, The University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Sasha D. Adams
- Department of Surgery, The University of Texas Medical School at Houston, Houston, Texas; and Department of Surgery, The University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Brian S. Zuckerbraun
- Department of Surgery, The University of Texas Medical School at Houston, Houston, Texas; and Department of Surgery, The University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - David W. Mercer
- Department of Surgery, The University of Texas Medical School at Houston, Houston, Texas; and Department of Surgery, The University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
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Zinc protoporphyrin inhibition of lipopolysaccharide-, lipoteichoic acid-, and peptidoglycan-induced nitric oxide production through stimulating iNOS protein ubiquitination. Toxicol Appl Pharmacol 2009; 237:357-65. [DOI: 10.1016/j.taap.2009.04.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2008] [Revised: 03/24/2009] [Accepted: 04/10/2009] [Indexed: 11/22/2022]
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Li X, Bazer FW, Gao H, Jobgen W, Johnson GA, Li P, McKnight JR, Satterfield MC, Spencer TE, Wu G. Amino acids and gaseous signaling. Amino Acids 2009; 37:65-78. [DOI: 10.1007/s00726-009-0264-5] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2009] [Accepted: 02/12/2009] [Indexed: 01/08/2023]
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