1
|
Romão CC, Mendes SS, Rebelo C, Carvalho SM, Saraiva LM. Antimicrobial and anticancer properties of carbon monoxide releasing molecules of the fac-[Re(CO) 3(N-N)L] + family. Dalton Trans 2024; 53:11009-11020. [PMID: 38874948 DOI: 10.1039/d4dt00978a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
The toxicity profile of fac-[Re(CO)3(N-N)L]+ complexes against microbial and tumoral cells has been extensively studied, primarily focusing on modifications to the bidentate diimine (N-N) ligand. However, less attention has been paid to modifications of the axial ligand L, which is perpendicular to the Re-N-N plane. This study reveals that the high toxicity of the fac-[Re(CO)3(bpy)(Ctz)]+ complex may be attributed to the structural effect of the trityl (CPh3) group present in clotrimazole, as removal of phenyl rings causes a significant decrease in the activity against Staphylococcus aureus (S. aureus). Moreover, substitution of the 1-tritylimidazole ligand by the structurally related ligands PPh3 and PCy3 maintains similarly high activity levels. These findings contribute to understanding the interactions of toxic complexes with bacterial membranes, suggesting that the ligand structures play a crucial role in inhibiting cell wall synthesis processes, potentially including Lipid II synthesis. Compounds with Ph3E (E = C-imidazole; P) groups also showed to be 10 times more toxic than cisplatin against three mammalian cell lines (IC50: 2-4 μM). In contrast, the analogue 1-benzylimidazole and 1-tert-butylimidazole derivatives were as toxic as cisplatin. We observed that the decomposition of the [Re(I)(CO)3] fragment inside mammalian cell lines liberates CO, which is expected to exert biological effects. Therefore, compounds of this family possessing the structural motif Ph3E seem to combine high antimicrobial and antitumoral activities, the latter being much higher than that of cisplatin.
Collapse
Affiliation(s)
- Carlos C Romão
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Avenida da República (EAN), 2780-157 Oeiras, Portugal.
| | - Sofia S Mendes
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Avenida da República (EAN), 2780-157 Oeiras, Portugal.
| | - Cátia Rebelo
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Avenida da República (EAN), 2780-157 Oeiras, Portugal.
| | - Sandra M Carvalho
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Avenida da República (EAN), 2780-157 Oeiras, Portugal.
| | - Lígia M Saraiva
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Avenida da República (EAN), 2780-157 Oeiras, Portugal.
| |
Collapse
|
2
|
Downs DM, Poole RK. Interpreting the role of antioxidants in vivo: A cautionary tale. Mol Microbiol 2024; 122:129-132. [PMID: 38960396 PMCID: PMC11260230 DOI: 10.1111/mmi.15292] [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: 06/13/2024] [Revised: 06/18/2024] [Accepted: 06/21/2024] [Indexed: 07/05/2024]
Abstract
Bacteria have a remarkable ability to sense environmental stresses and to respond to these stressors by adapting their metabolism and physiology. In recent publications, investigators have suggested that multiple stresses that cause cell death share the mechanistic feature of stimulating the formation of reactive oxygen species (ROS). A central piece of evidence cited in these claims is the ability of exogenous antioxidant compounds to mitigate stress-related cell death. The validity of attributing a positive effect of exogenous antioxidants to ROS-mediated stress is challenged by an important study by Korshunov and Imlay in this issue of Molecular Microbiology. This study reports biochemical data that convincingly show that some commonly used antioxidants quench oxidants orders of magnitude too slowly to have a significant effect on the concentration of ROS in the cell. Under conditions where antioxidants minimize cell death, they also slow growth. Significantly, slowing cell growth by other means has the same restorative effect as adding an antioxidant. Based on the solid biochemical and genetic data, Korshunov and Imlay make the case for discarding the use of antioxidants to diagnose conditions that generate increased internal ROS production.
Collapse
Affiliation(s)
- Diana M. Downs
- Department of Microbiology, University of Georgia, Athens, GA
| | - Robert K Poole
- School of Biosciences, University of Sheffield, Sheffield, UK
| |
Collapse
|
3
|
Cao L, Lin X, Liu X, Wu M, Liu S, Wang T, Mao D, Liu B. Type-I Photosensitizer-Triggered Controllable Carbon Monoxide Release for Effective Treatment of Staph Skin Infection. NANO LETTERS 2023; 23:9769-9777. [PMID: 37616496 DOI: 10.1021/acs.nanolett.3c02434] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/26/2023]
Abstract
Staphylococcus aureus (S. aureus) infection is a major infectious skin disease that is highly resistant to conventional antibiotic treatment and host immune defense, leading to recurrence and exacerbation of bacterial infection. Herein, we developed a photoresponsive carbon monoxide (CO)-releasing nanocomposite by integrating anion-π+ type-I photosensitizer (OMeTBP) and organometallic complex (FeCO) for the treatment of planktonic S. aureus and biofilm-associated infections. After optimizing the molar ratio of FeCO and OMeTBP, the prepared nanoparticles, OMeTBP@FeCONPs, not only ensured sufficient loading of CO donors and efficient CO generation but also showed negligible free ROS leakage under light irradiation, which helped to avoid tissue damage caused by excessive ROS. Both in vitro and in vivo results demonstrated that OMeTBP@FeCONPs could effectively inhibit S. aureus methicillin-resistant S. aureus (MRSA), and bacterial biofilm. Our design has the potential to overcome the resistance of conventional antibiotic treatment and provide a more effective option for bacterial infections.
Collapse
Affiliation(s)
- Lei Cao
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Fuzhou 350207, People's Republic of China
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 117585, Singapore
| | - Xuan Lin
- Precision Medicine Institute The First Affiliated Hospital of Sun Yat-Sen University, Sun Yat-Sen University, Guangzhou 510080, People's Republic of China
- Inner Mongolia Clinical Medical College, Inner Mongolia Medical University, Hohhot, Inner Mongolia Autonomous Region 010017, People's Republic of China
| | - Xingang Liu
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 117585, Singapore
| | - Min Wu
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Fuzhou 350207, People's Republic of China
| | - Shitai Liu
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Fuzhou 350207, People's Republic of China
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 117585, Singapore
| | - Tongtong Wang
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Fuzhou 350207, People's Republic of China
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 117585, Singapore
| | - Duo Mao
- Precision Medicine Institute The First Affiliated Hospital of Sun Yat-Sen University, Sun Yat-Sen University, Guangzhou 510080, People's Republic of China
| | - Bin Liu
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Fuzhou 350207, People's Republic of China
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 117585, Singapore
| |
Collapse
|
4
|
S Mendes S, Sorg M, Luís CM, Fontinha D, Francisco D, Moita D, C Romão C, G Pinho M, Pimentel C, Prudêncio M, M Saraiva L. Conjugated carbon monoxide-releasing molecules have broad-spectrum antimicrobial activity. Future Med Chem 2023; 15:1037-1048. [PMID: 37458074 DOI: 10.4155/fmc-2023-0103] [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] [Indexed: 07/18/2023] Open
Abstract
Aim: To test the antimicrobial effect of carbon monoxide-releasing molecules (CORMs) conjugated with azoles on different microorganisms. Methods & results: We used broth microdilution, checkerboard and cytotoxicity assays, as well as imaging, fluorescence and bioluminescence experiments to study [Re(CO)3(2,2'-bipyridyl)(Ctz)]+ (also known as ReBpyCtz). ReBpyCtz exhibits a low minimum inhibitory concentration value, increases the intracellular formation of reactive oxygen species and causes significant alterations on Staphylococcus aureus's membrane. ReBpyCtz is active against fungi, having a more prolonged fungicidal effect on Candida glabrata than clotrimazole and is selectively active on blood-stage malaria parasites, at a concentration that is not toxic to kidney epithelial cells. Conclusion: Conjugated CORMs have the potential to be active against different types of pathogens, thus constituting a promising class of broad-spectrum antimicrobials.
Collapse
Affiliation(s)
- Sofia S Mendes
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Avenida da República (EAN), 2780-157, Oeiras, Portugal
| | - Moritz Sorg
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Avenida da República (EAN), 2780-157, Oeiras, Portugal
| | - Cláudia Malta Luís
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Avenida da República (EAN), 2780-157, Oeiras, Portugal
| | - Diana Fontinha
- Instituto de Medicina Molecular João Lobo Antunes, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028, Lisboa, Portugal
| | - Denise Francisco
- Instituto de Medicina Molecular João Lobo Antunes, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028, Lisboa, Portugal
| | - Diana Moita
- Instituto de Medicina Molecular João Lobo Antunes, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028, Lisboa, Portugal
| | - Carlos C Romão
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Avenida da República (EAN), 2780-157, Oeiras, Portugal
| | - Mariana G Pinho
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Avenida da República (EAN), 2780-157, Oeiras, Portugal
| | - Catarina Pimentel
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Avenida da República (EAN), 2780-157, Oeiras, Portugal
| | - Miguel Prudêncio
- Instituto de Medicina Molecular João Lobo Antunes, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028, Lisboa, Portugal
| | - Lígia M Saraiva
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Avenida da República (EAN), 2780-157, Oeiras, Portugal
| |
Collapse
|
5
|
Gao L, Cheng J, Shen Z, Zhang G, Liu S, Hu J. Orchestrating Nitric Oxide and Carbon Monoxide Signaling Molecules for Synergistic Treatment of MRSA Infections. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202112782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lei Gao
- Department of Polymer Science and Engineering Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 China
| | - Jian Cheng
- Department of Polymer Science and Engineering Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 China
| | - Zhiqiang Shen
- Department of Polymer Science and Engineering Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 China
| | - Guoying Zhang
- Department of Polymer Science and Engineering Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 China
| | - Shiyong Liu
- Department of Polymer Science and Engineering Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 China
| | - Jinming Hu
- Department of Polymer Science and Engineering Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 China
| |
Collapse
|
6
|
Gao L, Cheng J, Shen Z, Zhang G, Liu S, Hu J. Orchestrating Nitric Oxide and Carbon Monoxide Signaling Molecules for Synergistic Treatment of MRSA Infections. Angew Chem Int Ed Engl 2021; 61:e202112782. [PMID: 34694047 DOI: 10.1002/anie.202112782] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Indexed: 12/25/2022]
Abstract
The local delivery of gaseous signaling molecules (GSMs) has shown promising therapeutic potential. However, although GSMs have a subtle interplay in physiological and pathological conditions, the co-delivery of different GSMs for therapeutic purposes remains unexplored. Herein, we covalently graft a nitric oxide (NO)-releasing N-nitrosamine moiety onto the carbon monoxide (CO)-releasing 3-hydroxyflavone (3-HF) antenna, resulting in the first NO/CO-releasing donor. Under visible light irradiation, photo-mediated co-release of NO and CO reveals a superior antimicrobial effect toward Gram-positive bacteria with a combination index of 0.053. The synergy of NO and CO hyperpolarizes and permeabilizes bacterial membranes, which, however, shows negligible hemolysis and no evident toxicity toward normal mammalian cells. Moreover, the co-release of NO and CO can efficiently treat MRSA infection in a murine skin wound model, showing a better therapeutic capacity than vancomycin.
Collapse
Affiliation(s)
- Lei Gao
- Department of Polymer Science and Engineering, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Jian Cheng
- Department of Polymer Science and Engineering, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Zhiqiang Shen
- Department of Polymer Science and Engineering, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Guoying Zhang
- Department of Polymer Science and Engineering, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Shiyong Liu
- Department of Polymer Science and Engineering, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Jinming Hu
- Department of Polymer Science and Engineering, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui, 230026, China
| |
Collapse
|
7
|
Cheng J, Hu J. Recent Advances on Carbon Monoxide Releasing Molecules for Antibacterial Applications. ChemMedChem 2021; 16:3628-3634. [PMID: 34613654 DOI: 10.1002/cmdc.202100555] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 09/21/2021] [Indexed: 12/26/2022]
Abstract
Carbon monoxide (CO) has been known as an endogenous signaling molecule in addition to an air pollutant. It plays a critical role in many physiological and pathological processes. Therefore, CO has been recognized as a potent therapeutic agent for the treatment of numerous diseases such as cancers, rheumatoid arthritis, and so on. Instead of direct CO inhalation, two main categories of CO-releasing molecules (CORMs) (i. e., metal carbonyls and nonmetallic CO donors) have been developed to safely and locally deliver CO to target tissues. In this minireview, we summarize the recent achievements of CORMs on antibacterial applications. It appears that the antibacterial activity of CORMs is different from CO gas, which is tightly correlated to not only the types of CORMs applied but also the tested bacterial strains. In some circumstances, the antibacterial mechanisms are debated and need to be clarified. We hope more attention can be paid to this emerging field and new antibacterial agents with a low risk of drug resistance can be developed.
Collapse
Affiliation(s)
- Jian Cheng
- Department of Polymer Science and Engineering, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, 96 Jinzhai Road, Anhui 230026, Hefei, China
| | - Jinming Hu
- Department of Polymer Science and Engineering, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, 96 Jinzhai Road, Anhui 230026, Hefei, China
| |
Collapse
|
8
|
Southam HM, Williamson MP, Chapman JA, Lyon RL, Trevitt CR, Henderson PJF, Poole RK. 'Carbon-Monoxide-Releasing Molecule-2 (CORM-2)' Is a Misnomer: Ruthenium Toxicity, Not CO Release, Accounts for Its Antimicrobial Effects. Antioxidants (Basel) 2021; 10:antiox10060915. [PMID: 34198746 PMCID: PMC8227206 DOI: 10.3390/antiox10060915] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 05/31/2021] [Accepted: 06/02/2021] [Indexed: 02/06/2023] Open
Abstract
Carbon monoxide (CO)-releasing molecules (CORMs) are used to deliver CO, a biological ‘gasotransmitter’, in biological chemistry and biomedicine. CORMs kill bacteria in culture and in animal models, but are reportedly benign towards mammalian cells. CORM-2 (tricarbonyldichlororuthenium(II) dimer, Ru2Cl4(CO)6), the first widely used and commercially available CORM, displays numerous pharmacological, biochemical and microbiological activities, generally attributed to CO release. Here, we investigate the basis of its potent antibacterial activity against Escherichia coli and demonstrate, using three globin CO sensors, that CORM-2 releases negligible CO (<0.1 mol CO per mol CORM-2). A strong negative correlation between viability and cellular ruthenium accumulation implies that ruthenium toxicity underlies biocidal activity. Exogenous amino acids and thiols (especially cysteine, glutathione and N-acetyl cysteine) protected bacteria against inhibition of growth by CORM-2. Bacteria treated with 30 μM CORM-2, with added cysteine and histidine, exhibited no significant loss of viability, but were killed in the absence of these amino acids. Their prevention of toxicity correlates with their CORM-2-binding affinities (Cys, Kd 3 μM; His, Kd 130 μM) as determined by 1H-NMR. Glutathione is proposed to be an important intracellular target of CORM-2, with CORM-2 having a much higher affinity for reduced glutathione (GSH) than oxidised glutathione (GSSG) (GSH, Kd 2 μM; GSSG, Kd 25,000 μM). The toxicity of low, but potent, levels (15 μM) of CORM-2 was accompanied by cell lysis, as judged by the release of cytoplasmic ATP pools. The biological effects of CORM-2 and related CORMs, and the design of biological experiments, must be re-examined in the light of these data.
Collapse
Affiliation(s)
- Hannah M. Southam
- Department of Molecular Biology and Biotechnology, The University of Sheffield, Western Bank, Sheffield S10 2TN, UK; (H.M.S.); (M.P.W.); (J.A.C.); (R.L.L.); (C.R.T.)
| | - Michael P. Williamson
- Department of Molecular Biology and Biotechnology, The University of Sheffield, Western Bank, Sheffield S10 2TN, UK; (H.M.S.); (M.P.W.); (J.A.C.); (R.L.L.); (C.R.T.)
| | - Jonathan A. Chapman
- Department of Molecular Biology and Biotechnology, The University of Sheffield, Western Bank, Sheffield S10 2TN, UK; (H.M.S.); (M.P.W.); (J.A.C.); (R.L.L.); (C.R.T.)
- Centre for Bacterial Cell Biology, Medical School, Newcastle University, Newcastle upon Tyne NE2 4AX, UK
| | - Rhiannon L. Lyon
- Department of Molecular Biology and Biotechnology, The University of Sheffield, Western Bank, Sheffield S10 2TN, UK; (H.M.S.); (M.P.W.); (J.A.C.); (R.L.L.); (C.R.T.)
| | - Clare R. Trevitt
- Department of Molecular Biology and Biotechnology, The University of Sheffield, Western Bank, Sheffield S10 2TN, UK; (H.M.S.); (M.P.W.); (J.A.C.); (R.L.L.); (C.R.T.)
| | - Peter J. F. Henderson
- School of Biomedical Sciences and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, UK;
| | - Robert K. Poole
- Department of Molecular Biology and Biotechnology, The University of Sheffield, Western Bank, Sheffield S10 2TN, UK; (H.M.S.); (M.P.W.); (J.A.C.); (R.L.L.); (C.R.T.)
- Correspondence:
| |
Collapse
|
9
|
Yang X, Lu W, Hopper CP, Ke B, Wang B. Nature's marvels endowed in gaseous molecules I: Carbon monoxide and its physiological and therapeutic roles. Acta Pharm Sin B 2021; 11:1434-1445. [PMID: 34221861 PMCID: PMC8245769 DOI: 10.1016/j.apsb.2020.10.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 08/03/2020] [Accepted: 09/07/2020] [Indexed: 02/08/2023] Open
Abstract
Nature has endowed gaseous molecules such as O2, CO2, CO, NO, H2S, and N2 with critical and diverse roles in sustaining life, from supplying energy needed to power life and building blocks for life's physical structure to mediating and coordinating cellular functions. In this article, we give a brief introduction of the complex functions of the various gaseous molecules in life and then focus on carbon monoxide as a specific example of an endogenously produced signaling molecule to highlight the importance of this class of molecules. The past twenty years have seen much progress in understanding CO's mechanism(s) of action and pharmacological effects as well as in developing delivery methods for easy administration. One remarkable trait of CO is its pleiotropic effects that have few parallels, except perhaps its sister gaseous signaling molecules such as nitric oxide and hydrogen sulfide. This review will delve into the sophistication of CO-mediated signaling as well as its validated pharmacological functions and possible therapeutic applications.
Collapse
Affiliation(s)
- Xiaoxiao Yang
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, GA 30303, USA
| | - Wen Lu
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, GA 30303, USA
| | - Christopher P. Hopper
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, GA 30303, USA
- Institut für Experimentelle Biomedizin, Universitätsklinikum Würzburg, Würzburg, Bavaria 97080, Germany
| | - Bowen Ke
- Department of Anesthesiology, West China Hospital, Chengdu 610041, China
| | - Binghe Wang
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, GA 30303, USA
| |
Collapse
|
10
|
Mendes SS, Miranda V, Saraiva LM. Hydrogen Sulfide and Carbon Monoxide Tolerance in Bacteria. Antioxidants (Basel) 2021; 10:729. [PMID: 34063102 PMCID: PMC8148161 DOI: 10.3390/antiox10050729] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 04/26/2021] [Accepted: 05/03/2021] [Indexed: 12/27/2022] Open
Abstract
Hydrogen sulfide and carbon monoxide share the ability to be beneficial or harmful molecules depending on the concentrations to which organisms are exposed. Interestingly, humans and some bacteria produce small amounts of these compounds. Since several publications have summarized the recent knowledge of its effects in humans, here we have chosen to focus on the role of H2S and CO on microbial physiology. We briefly review the current knowledge on how bacteria produce and use H2S and CO. We address their potential antimicrobial properties when used at higher concentrations, and describe how microbial systems detect and survive toxic levels of H2S and CO. Finally, we highlight their antimicrobial properties against human pathogens when endogenously produced by the host and when released by external chemical donors.
Collapse
|
11
|
Yuan Z, Lin C, Dai L, He Y, Hu J, Xu K, Tao B, Liu P, Cai K. Near-Infrared Light-Activatable Dual-Action Nanoparticle Combats the Established Biofilms of Methicillin-Resistant Staphylococcus aureus and Its Accompanying Inflammation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2007522. [PMID: 33690998 DOI: 10.1002/smll.202007522] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 01/23/2021] [Indexed: 05/22/2023]
Abstract
Clinically, inhibition of both bacterial infection and excessive inflammation is a crucial step for improved wound treatments. Herein, the fabrication of near-infrared-light (NIR)-activatable deoxyribonuclease (DNase)-carbon monoxide (CO)@mesoporous polydopamine nanoparticles (MPDA NPs) is demonstrated for efficient elimination of methicillin-resistant Staphylococcus aureus (MRSA) biofilms and the following anti-inflammatory activity. Specifically, thermosensitive CO-gas-releasing donors (CO releasing molecules, FeCO) are first encapsulated into MPDA NPs, followed by covalently immobilizing deoxyribonuclease I (DNase I) on the surfaces of MPDA NPs. DNase I can degrade the extracellular DNA in biofilms, which site specifically destroys the compactness of the biofilms. With NIR irradiation, DNase-CO@MPDA NPs display great photothermal ability, and further trigger on-demand delivery of bactericidal CO gas that can adequately permeate the impaired biofilms. Eventually, they achieve effective MRSA biofilm elimination in virtue of the synergistic effects of both DNase I participation and CO-gas-potentiated photothermal therapy. Importantly, the inflammatory responses of DNase-CO@MPDA NPs and NIR-treated wounds are simultaneously alleviated owing to the anti-inflammatory features of released CO. Finally, NIR-activatable DNase-CO@MPDA NPs accelerate the healing process of MRSA-biofilm-infected cutaneous wounds. Taken together, this phototherapeutic strategy displays great therapeutic potential in treating the formidable clinical problems caused by MRSA biofilms and the accompanying inflammation.
Collapse
Affiliation(s)
- Zhang Yuan
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, P. R. China
- Key Laboratory of Biorheological Science and Technology, Ministry of Education College of Bioengineering, Chongqing University, Chongqing, 400044, P. R. China
| | - Chuanchuan Lin
- Key Laboratory of Biorheological Science and Technology, Ministry of Education College of Bioengineering, Chongqing University, Chongqing, 400044, P. R. China
| | - Liangliang Dai
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, P. R. China
| | - Ye He
- Key Laboratory of Biorheological Science and Technology, Ministry of Education College of Bioengineering, Chongqing University, Chongqing, 400044, P. R. China
| | - Jingwei Hu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education College of Bioengineering, Chongqing University, Chongqing, 400044, P. R. China
| | - Kun Xu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education College of Bioengineering, Chongqing University, Chongqing, 400044, P. R. China
| | - Bailong Tao
- Key Laboratory of Biorheological Science and Technology, Ministry of Education College of Bioengineering, Chongqing University, Chongqing, 400044, P. R. China
| | - Peng Liu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education College of Bioengineering, Chongqing University, Chongqing, 400044, P. R. China
| | - Kaiyong Cai
- Key Laboratory of Biorheological Science and Technology, Ministry of Education College of Bioengineering, Chongqing University, Chongqing, 400044, P. R. China
| |
Collapse
|
12
|
Di Pietro C, Öz HH, Murray TS, Bruscia EM. Targeting the Heme Oxygenase 1/Carbon Monoxide Pathway to Resolve Lung Hyper-Inflammation and Restore a Regulated Immune Response in Cystic Fibrosis. Front Pharmacol 2020; 11:1059. [PMID: 32760278 PMCID: PMC7372134 DOI: 10.3389/fphar.2020.01059] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 06/30/2020] [Indexed: 12/11/2022] Open
Abstract
In individuals with cystic fibrosis (CF), lung hyper-inflammation starts early in life and is perpetuated by mucus obstruction and persistent bacterial infections. The continuous tissue damage and scarring caused by non-resolving inflammation leads to bronchiectasis and, ultimately, respiratory failure. Macrophages (MΦs) are key regulators of immune response and host defense. We and others have shown that, in CF, MΦs are hyper-inflammatory and exhibit reduced bactericidal activity. Thus, MΦs contribute to the inability of CF lung tissues to control the inflammatory response or restore tissue homeostasis. The non-resolving hyper-inflammation in CF lungs is attributed to an impairment of several signaling pathways associated with resolution of the inflammatory response, including the heme oxygenase-1/carbon monoxide (HO-1/CO) pathway. HO-1 is an enzyme that degrades heme groups, leading to the production of potent antioxidant, anti-inflammatory, and bactericidal mediators, such as biliverdin, bilirubin, and CO. This pathway is fundamental to re-establishing cellular homeostasis in response to various insults, such as oxidative stress and infection. Monocytes/MΦs rely on abundant induction of the HO-1/CO pathway for a controlled immune response and for potent bactericidal activity. Here, we discuss studies showing that blunted HO-1 activation in CF-affected cells contributes to hyper-inflammation and defective host defense against bacteria. We dissect potential cellular mechanisms that may lead to decreased HO-1 induction in CF cells. We review literature suggesting that induction of HO-1 may be beneficial for the treatment of CF lung disease. Finally, we discuss recent studies highlighting how endogenous HO-1 can be induced by administration of controlled doses of CO to reduce lung hyper-inflammation, oxidative stress, bacterial infection, and dysfunctional ion transport, which are all hallmarks of CF lung disease.
Collapse
Affiliation(s)
| | | | | | - Emanuela M. Bruscia
- Department of Pediatrics, Yale University School of Medicine, New Haven, CT, United States
| |
Collapse
|
13
|
Yan H, Du J, Zhu S, Nie G, Zhang H, Gu Z, Zhao Y. Emerging Delivery Strategies of Carbon Monoxide for Therapeutic Applications: from CO Gas to CO Releasing Nanomaterials. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1904382. [PMID: 31663244 DOI: 10.1002/smll.201904382] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 10/08/2019] [Indexed: 06/10/2023]
Abstract
Carbon monoxide (CO) therapy has emerged as a hot topic under exploration in the field of gas therapy as it shows the promise of treating various diseases. Due to the gaseous property and the high affinity for human hemoglobin, the main challenges of administrating medicinal CO are the lack of target selectivity as well as the toxic profile at relatively high concentrations. Although abundant CO releasing molecules (CORMs) with the capacity to deliver CO in biological systems have been developed, several disadvantages related to CORMs, including random diffusion, poor solubility, potential toxicity, and lack of on-demand CO release in deep tissue, still confine their practical use. Recently, the advent of versatile nanomedicine has provided a promising chance for improving the properties of naked CORMs and simultaneously realizing the therapeutic applications of CO. This review presents a brief summarization of the emerging delivery strategies of CO based on nanomaterials for therapeutic application. First, an introduction covering the therapeutic roles of CO and several frequently used CORMs is provided. Then, recent advancements in the synthesis and application of versatile CO releasing nanomaterials are elaborated. Finally, the current challenges and future directions of these important delivery strategies are proposed.
Collapse
Affiliation(s)
- Haili Yan
- College of Medical Imaging, Shanxi Medical University, Taiyuan, 030001, P. R. China
| | - Jiangfeng Du
- College of Medical Imaging, Shanxi Medical University, Taiyuan, 030001, P. R. China
| | - Shuang Zhu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Guangjun Nie
- College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Hui Zhang
- College of Medical Imaging, Shanxi Medical University, Taiyuan, 030001, P. R. China
| | - Zhanjun Gu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, P. R. China
- College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yuliang Zhao
- College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| |
Collapse
|
14
|
Metabolomics of Escherichia coli Treated with the Antimicrobial Carbon Monoxide-Releasing Molecule CORM-3 Reveals Tricarboxylic Acid Cycle as Major Target. Antimicrob Agents Chemother 2019; 63:AAC.00643-19. [PMID: 31332064 DOI: 10.1128/aac.00643-19] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Accepted: 07/12/2019] [Indexed: 12/23/2022] Open
Abstract
In the last decade, carbon monoxide-releasing molecules (CORMs) have been shown to act against several pathogens and to be promising antimicrobials. However, the understanding of the mode of action and reactivity of these compounds on bacterial cells is still deficient. In this work, we used a metabolomics approach to probe the toxicity of the ruthenium(II) complex Ru(CO)3Cl(glycinate) (CORM-3) on Escherichia coli By resorting to 1H nuclear magnetic resonance, mass spectrometry, and enzymatic activities, we show that CORM-3-treated E. coli accumulates larger amounts of glycolytic intermediates, independently of the oxygen growth conditions. The work provides several evidences that CORM-3 inhibits glutamate synthesis and the iron-sulfur enzymes of the tricarboxylic acid (TCA) cycle and that the glycolysis pathway is triggered in order to establish an energy and redox homeostasis balance. Accordingly, supplementation of the growth medium with fumarate, α-ketoglutarate, glutamate, and amino acids cancels the toxicity of CORM-3. Importantly, inhibition of the iron-sulfur enzymes glutamate synthase, aconitase, and fumarase is only observed for compounds that liberate carbon monoxide. Altogether, this work reveals that the antimicrobial action of CORM-3 results from intracellular glutamate deficiency and inhibition of nitrogen and TCA cycles.
Collapse
|
15
|
Southam HM, Smith TW, Lyon RL, Liao C, Trevitt CR, Middlemiss LA, Cox FL, Chapman JA, El-Khamisy SF, Hippler M, Williamson MP, Henderson PJF, Poole RK. A thiol-reactive Ru(II) ion, not CO release, underlies the potent antimicrobial and cytotoxic properties of CO-releasing molecule-3. Redox Biol 2018; 18:114-123. [PMID: 30007887 PMCID: PMC6067063 DOI: 10.1016/j.redox.2018.06.008] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 06/23/2018] [Indexed: 12/25/2022] Open
Abstract
Carbon monoxide (CO)-releasing molecules (CORMs), mostly metal carbonyl compounds, are extensively used as experimental tools to deliver CO, a biological ‘gasotransmitter’, in mammalian systems. CORMs are also explored as potential novel antimicrobial drugs, effectively and rapidly killing bacteria in vitro and in animal models, but are reportedly benign towards mammalian cells. Ru-carbonyl CORMs, exemplified by CORM-3 (Ru(CO)3Cl(glycinate)), exhibit the most potent antimicrobial effects against Escherichia coli. We demonstrate that CORM-3 releases little CO in buffers and cell culture media and that the active antimicrobial agent is Ru(II), which binds tightly to thiols. Thus, thiols and amino acids in complex growth media – such as histidine, methionine and oxidised glutathione, but most pertinently cysteine and reduced glutathione (GSH) – protect both bacterial and mammalian cells against CORM-3 by binding and sequestering Ru(II). No other amino acids exert significant protective effects. NMR reveals that CORM-3 binds cysteine and GSH in a 1:1 stoichiometry with dissociation constants, Kd, of about 5 μM, while histidine, GSSG and methionine are bound less tightly, with Kd values ranging between 800 and 9000 μM. There is a direct positive correlation between protection and amino acid affinity for CORM-3. Intracellular targets of CORM-3 in both bacterial and mammalian cells are therefore expected to include GSH, free Cys, His and Met residues and any molecules that contain these surface-exposed amino acids. These results necessitate a major reappraisal of the biological effects of CORM-3 and related CORMs. Carbon monoxide-releasing molecules (CORMs) are used for experimental CO delivery. CORM-3 is a potent antimicrobial, but is reportedly beneficial to mammalian cells. We demonstrate CORM-3 releases little CO in buffers and cell culture media. Redox-active Ru2+ is the biological agent, binding tightly to metabolites e.g. thiol. These results necessitate a major reappraisal of the biological effects of CORMs.
Collapse
Affiliation(s)
- Hannah M Southam
- Department of Molecular Biology and Biotechnology, The University of Sheffield, Western Bank, Sheffield S10 2TN, UK
| | - Thomas W Smith
- Department of Chemistry, The University of Sheffield, Western Bank, Sheffield S3 7HF, UK
| | - Rhiannon L Lyon
- Department of Molecular Biology and Biotechnology, The University of Sheffield, Western Bank, Sheffield S10 2TN, UK
| | - Chunyan Liao
- Department of Molecular Biology and Biotechnology, The University of Sheffield, Western Bank, Sheffield S10 2TN, UK
| | - Clare R Trevitt
- Department of Molecular Biology and Biotechnology, The University of Sheffield, Western Bank, Sheffield S10 2TN, UK
| | - Laurence A Middlemiss
- Department of Chemistry, The University of Sheffield, Western Bank, Sheffield S3 7HF, UK
| | - Francesca L Cox
- Department of Chemistry, The University of Sheffield, Western Bank, Sheffield S3 7HF, UK
| | - Jonathan A Chapman
- Department of Chemistry, The University of Sheffield, Western Bank, Sheffield S3 7HF, UK
| | - Sherif F El-Khamisy
- Department of Molecular Biology and Biotechnology, The University of Sheffield, Western Bank, Sheffield S10 2TN, UK
| | - Michael Hippler
- Department of Chemistry, The University of Sheffield, Western Bank, Sheffield S3 7HF, UK
| | - Michael P Williamson
- Department of Molecular Biology and Biotechnology, The University of Sheffield, Western Bank, Sheffield S10 2TN, UK.
| | - Peter J F Henderson
- School of Biomedical Sciences and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, UK.
| | - Robert K Poole
- Department of Molecular Biology and Biotechnology, The University of Sheffield, Western Bank, Sheffield S10 2TN, UK.
| |
Collapse
|
16
|
Singh N, Ahmad Z, Baid N, Kumar A. Host heme oxygenase-1: Friend or foe in tackling pathogens? IUBMB Life 2018; 70:869-880. [PMID: 29761622 DOI: 10.1002/iub.1868] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 04/14/2018] [Indexed: 12/26/2022]
Abstract
Infectious diseases are a major challenge in management of human health worldwide. Recent literature suggests that host immune system could be modulated to ameliorate the pathogenesis of infectious disease. Heme oxygenase (HMOX1) is a key regulator of cellular signaling and it could be modulated using pharmacological reagents. HMOX1 is a cytoprotective enzyme that degrades heme to generate carbon monoxide (CO), biliverdin, and molecular iron. CO and biliverdin (or bilirubin derived from it) can restrict the growth of a few pathogens. Both of these also induce antioxidant pathways and anti-inflammatory pathways. On the other hand, molecular iron can induce proinflammatory pathway besides making the cellular environment oxidative in nature. Since microbial infections often induce oxidative stress in host cells/tissues, role of HMOX1 has been analyzed in the pathogenesis of number of infections. In this review, we have described the role of HMOX1 in pathogenesis of bacterial infections caused by Mycobacterium species, Salmonella and in microbial sepsis. We have also provided a succinct overview of the role of HMOX1 in parasitic infections such as malaria and leishmaniasis. In the end, we have also elaborated the role of HMOX1 in viral infections such as AIDS, hepatitis, dengue, and influenza. © 2018 IUBMB Life, 70(9):869-880, 2018.
Collapse
Affiliation(s)
- Nisha Singh
- Division of Cell Biology and Immunology, Council of Scientific and Industrial Research, Institute of Microbial Technology, Chandigarh, Punjab, India
| | - Zeeshan Ahmad
- Division of Cell Biology and Immunology, Council of Scientific and Industrial Research, Institute of Microbial Technology, Chandigarh, Punjab, India
| | - Navin Baid
- Division of Cell Biology and Immunology, Council of Scientific and Industrial Research, Institute of Microbial Technology, Chandigarh, Punjab, India
| | - Ashwani Kumar
- Division of Cell Biology and Immunology, Council of Scientific and Industrial Research, Institute of Microbial Technology, Chandigarh, Punjab, India
| |
Collapse
|
17
|
Rana N, Jesse HE, Tinajero-Trejo M, Butler JA, Tarlit JD, von Und Zur Muhlen ML, Nagel C, Schatzschneider U, Poole RK. A manganese photosensitive tricarbonyl molecule [Mn(CO)3(tpa-κ 3N)]Br enhances antibiotic efficacy in a multi-drug-resistant Escherichia coli. MICROBIOLOGY-SGM 2017; 163:1477-1489. [PMID: 28954688 PMCID: PMC5845575 DOI: 10.1099/mic.0.000526] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Carbon monoxide-releasing molecules (CORMs) are a promising class of new antimicrobials, with multiple modes of action that are distinct from those of standard antibiotics. The relentless increase in antimicrobial resistance, exacerbated by a lack of new antibiotics, necessitates a better understanding of how such novel agents act and might be used synergistically with established antibiotics. This work aimed to understand the mechanism(s) underlying synergy between a manganese-based photoactivated carbon monoxide-releasing molecule (PhotoCORM), [Mn(CO)3(tpa-κ3N)]Br [tpa=tris(2-pyridylmethyl)amine], and various classes of antibiotics in their activities towards Escherichia coli EC958, a multi-drug-resistant uropathogen. The title compound acts synergistically with polymyxins [polymyxin B and colistin (polymyxin E)] by damaging the bacterial cytoplasmic membrane. [Mn(CO)3(tpa-κ3N)]Br also potentiates the action of doxycycline, resulting in reduced expression of tetA, which encodes a tetracycline efflux pump. We show that, like tetracyclines, the breakdown products of [Mn(CO)3(tpa-κ3N)]Br activation chelate iron and trigger an iron starvation response, which we propose to be a further basis for the synergies observed. Conversely, media supplemented with excess iron abrogated the inhibition of growth by doxycycline and the title compound. In conclusion, multiple factors contribute to the ability of this PhotoCORM to increase the efficacy of antibiotics in the polymyxin and tetracycline families. We propose that light-activated carbon monoxide release is not the sole basis of the antimicrobial activities of [Mn(CO)3(tpa-κ3N)]Br.
Collapse
Affiliation(s)
- Namrata Rana
- Department of Molecular Biology and Biotechnology, The University of Sheffield, Sheffield, UK
| | - Helen E Jesse
- Department of Molecular Biology and Biotechnology, The University of Sheffield, Sheffield, UK
| | - Mariana Tinajero-Trejo
- Department of Molecular Biology and Biotechnology, The University of Sheffield, Sheffield, UK.,Present address: Cell Biology Program, The Hospital for Sick Children, Toronto, Canada
| | - Jonathan A Butler
- Department of Molecular Biology and Biotechnology, The University of Sheffield, Sheffield, UK.,Present address: School of Healthcare Science, Manchester Metropolitan University, UK
| | - John D Tarlit
- Department of Molecular Biology and Biotechnology, The University of Sheffield, Sheffield, UK
| | | | - Christoph Nagel
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Würzburg, Germany
| | - Ulrich Schatzschneider
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Würzburg, Germany
| | - Robert K Poole
- Department of Molecular Biology and Biotechnology, The University of Sheffield, Sheffield, UK
| |
Collapse
|
18
|
Vencloviene J, Babarskiene RM, Dobozinskas P, Dedele A, Lopatiene K, Ragaisyte N. The short-term associations of weather and air pollution with emergency ambulance calls for paroxysmal atrial fibrillation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:15031-15043. [PMID: 28493187 DOI: 10.1007/s11356-017-9138-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Accepted: 04/27/2017] [Indexed: 06/07/2023]
Abstract
A circadian variation in the cardiovascular parameters has been detected. It is plausible that the influence of the environment varies during different periods of the day. We investigated the association between daily emergency ambulance calls (EC) for paroxysmal atrial fibrillation (AF) that occurred during the time intervals of 8:00-13:59, 14:00-21:59, and 22:00-7:59, and weather conditions and exposure to CO and PM10. We used Poisson regression to explore the association between the risk of EC for AF and environmental variables, adjusting for seasonal variation. Before noon, the risk was associated with an IQR (0.333 mg/m3) increase in CO at lag 2-6 days above the median (RR = 1.15, P = 0.002); a protective impact of CO on previous day was observed (RR = 0.91, P = 0.018). During 14:00-21:59, a negative effect of air temperature below 1.9 °C (lag 2-3 days) was detected (per 10 °C decrease: RR = 1.17, P = 0.044). At night, the elevated risk was associated with wind speed above the median (lag 2-4 days) (per 1-kt increase: RR = 1.07, P = 0.001) and with PM10 at lag 2-5 days below the median (per IQR (7.31 μg/m3) increase: RR = 1.21, P = 0.002). Individuals over 65 years of age were more sensitive to air pollution, especially at night (CO lag 2-3 days < median, per IQR (0.12 mg/m3) increase: RR = 1.14, P = 0.045; PM10 lag 2-5 days < median, per IQR increase: RR = 1.32, P = 0.001). The associations of air pollution and other environmental variables with acute events may be analyzed depending on the time of the event.
Collapse
Affiliation(s)
- Jone Vencloviene
- Department of Environmental Sciences, Faculty of Natural Sciences, Vytautas Magnus University, Donelaicio St. 58, 44248, Kaunas, Lithuania.
| | - Ruta Marija Babarskiene
- Department of Cardiology, Lithuanian University of Health Sciences, Eiveniu str. 2, 50028, Kaunas, Lithuania
| | - Paulius Dobozinskas
- Department of Disaster Medicine, Lithuanian University of Health Sciences, Eiveniu str. 4, 50028, Kaunas, Lithuania
| | - Audrius Dedele
- Department of Environmental Sciences, Faculty of Natural Sciences, Vytautas Magnus University, Donelaicio St. 58, 44248, Kaunas, Lithuania
| | - Kristina Lopatiene
- Department of Orthodontics, Lithuanian University of Health Sciences, Luksos-Daumanto str. 6, 50106, Kaunas, Lithuania
| | - Nijole Ragaisyte
- Department of Cardiology, Lithuanian University of Health Sciences, Eiveniu str. 2, 50028, Kaunas, Lithuania
| |
Collapse
|
19
|
Ward JS, Morgan R, Lynam JM, Fairlamb IJS, Moir JWB. Toxicity of tryptophan manganese(i) carbonyl (Trypto-CORM), against Neisseria gonorrhoeae. MEDCHEMCOMM 2017; 8:346-352. [PMID: 30108750 PMCID: PMC6072082 DOI: 10.1039/c6md00603e] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Accepted: 12/02/2016] [Indexed: 12/11/2022]
Abstract
The potential for carbon monoxide-releasing molecules (CO-RMs) as antimicrobials represents an exciting prospective in the fight against antibiotic resistance. Trypto-CORM, a tryptophan-containing manganese(i) carbonyl, is toxic against E. coli following photo-activation. Here, we demonstrate that Trypto-CORM is toxic against Neisseria gonorrhoeae in the absence of photoactivation. Trypto-CORM toxicity was reversed by the high CO affinity globin leg-haemoglobin (Leg-Hb), indicating that the toxicity is due to CO release. Release of CO from Trypto-CORM in the dark was also detected with Leg-Hb (but not myoglobin) in vitro. N. gonorrhoeae is more sensitive to CO-based toxicity than other model bacterial pathogens, and may serve as a viable candidate for antimicrobial therapy using CO-RMs.
Collapse
Affiliation(s)
- Jonathan S Ward
- Department of Chemistry , University of York , Heslington , York , YO10 5DD , UK
- Department of Biology , University of York , Heslington , York , YO10 5DD , UK .
| | - Rebecca Morgan
- Department of Biology , University of York , Heslington , York , YO10 5DD , UK .
| | - Jason M Lynam
- Department of Chemistry , University of York , Heslington , York , YO10 5DD , UK
| | - Ian J S Fairlamb
- Department of Chemistry , University of York , Heslington , York , YO10 5DD , UK
- Biological Physical Sciences Institute (BPSI) , University of York , York YO10 5DD , UK
| | - James W B Moir
- Department of Biology , University of York , Heslington , York , YO10 5DD , UK .
| |
Collapse
|
20
|
Abstract
Ruthenium is seldom mentioned in microbiology texts, due to the fact that this metal has no known, essential roles in biological systems, nor is it generally considered toxic. Since the fortuitous discovery of cisplatin, first as an antimicrobial agent and then later employed widely as an anticancer agent, complexes of other platinum group metals, such as ruthenium, have attracted interest for their medicinal properties. Here, we review at length how ruthenium complexes have been investigated as potential antimicrobial, antiparasitic and chemotherapeutic agents, in addition to their long and well-established roles as biological stains and inhibitors of calcium channels. Ruthenium complexes are also employed in a surprising number of biotechnological roles. It is in the employment of ruthenium complexes as antimicrobial agents and alternatives or adjuvants to more traditional antibiotics, that we expect to see the most striking developments in the future. Such novel contributions from organometallic chemistry are undoubtedly sorely needed to address the antimicrobial resistance crisis and the slow appearance on the market of new antibiotics.
Collapse
|
21
|
Gong Y, Zhang T, Li M, Xi N, Zheng Y, Zhao Q, Chen Y, Liu B. Toxicity, bio-distribution and metabolism of CO-releasing molecules based on cobalt. Free Radic Biol Med 2016; 97:362-374. [PMID: 27375229 DOI: 10.1016/j.freeradbiomed.2016.06.029] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2016] [Revised: 06/23/2016] [Accepted: 06/27/2016] [Indexed: 12/18/2022]
Abstract
CO-releasing molecules (CORMs) containing [Co2(CO)6] moiety show many bioactivities, such as anti-inflammatory and antitumor cell proliferation. However, so far, no one knows their properties in vivo. So, here, we evaluated some these kind CORMs from drug-like properties including cytotoxicity, toxicity in vivo, distribution and metabolism. The results show all the tested complexes displayed antiproliferative activity to HeLa cell and HepG2 cell lines, and their IC50 values were 36-110µM against HeLa cells and 39-140µM against HepG2 cells. Toxicity tests of mice, we used oral acute toxic class method and got their LD50 values; among them, LD50 of complex 1 and complex 4 were in 2500-5000mgkg(-1) and complex 7 over 5000mgkg(-1). The developmental toxicities of the complexes were investigated in embryonic zebrafish. The mortality, hatch rate, malformation, heart rate, spontaneous movement, and larval behavior were examined, and we found both complexes 4 and 7 have not toxicity at low concentration (<1.0μM) but have higher toxicity at high concentration (>5.0μM). After several consecutive i.p administrations, tested complexes severely damaged rat liver and kidney in both functional and morphological aspects. Through metal ion measurement using ICP-AES, we found the tested complexes were unevenly distributed in tissues and organs; complex 4 has a big prone to collect in liver, whereas complex 7 easily enters to kidney. After administration 480min later, most of complex 7 excreted from kidney and entered urine, while complex 4 needed 9h at least. This results show cobalt did not accumulate, and could excrete with the urine. In vivo, Co(0) in complexes was oxidised to Co(II). In addition, the substituents significantly affected the rate of CO-release, cytotoxicity and their bio-distribution. In the view of these aspects, the CORMs based cobalt has a potential property to be a medicine.
Collapse
Affiliation(s)
- Yaguo Gong
- Institute of Medicinal Chemistry, School of Pharmacy of Lanzhou University, China
| | - Taofeng Zhang
- Institute of Medicinal Chemistry, School of Pharmacy of Lanzhou University, China
| | - Meng Li
- Institute of Medicinal Chemistry, School of Pharmacy of Lanzhou University, China
| | - Na Xi
- Institute of Medicinal Chemistry, School of Pharmacy of Lanzhou University, China
| | - Yawen Zheng
- School of Stomatology of Lanzhou University, Lanzhou 730000, China
| | - Quanyi Zhao
- Institute of Medicinal Chemistry, School of Pharmacy of Lanzhou University, China.
| | - Yonglin Chen
- The First Affiliated Hospital of Lanzhou University, China
| | - Bin Liu
- School of Stomatology of Lanzhou University, Lanzhou 730000, China
| |
Collapse
|
22
|
Klinger-Strobel M, Gläser S, Makarewicz O, Wyrwa R, Weisser J, Pletz MW, Schiller A. Bactericidal Effect of a Photoresponsive Carbon Monoxide-Releasing Nonwoven against Staphylococcus aureus Biofilms. Antimicrob Agents Chemother 2016; 60:4037-46. [PMID: 27114272 PMCID: PMC4914626 DOI: 10.1128/aac.00703-16] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Accepted: 04/17/2016] [Indexed: 01/17/2023] Open
Abstract
Staphylococcus aureus is a leading pathogen in skin and skin structure infections, including surgical and traumatic infections that are associated with biofilm formation. Because biofilm formation is accompanied by high phenotypic resistance of the embedded bacteria, they are almost impossible to eradicate by conventional antibiotics. Therefore, alternative therapeutic strategies are of high interest. We generated nanostructured hybrid nonwovens via the electrospinning of a photoresponsive carbon monoxide (CO)-releasing molecule [CORM-1, Mn2(CO)10] and the polymer polylactide. This nonwoven showed a CO-induced antimicrobial activity that was sufficient to reduce the biofilm-embedded bacteria by 70% after photostimulation at 405 nm. The released CO increased the concentration of reactive oxygen species (ROS) in the biofilms, suggesting that in addition to inhibiting the electron transport chain, ROS might play a role in the antimicrobial activity of CORMs on S. aureus The nonwoven showed increased cytotoxicity on eukaryotic cells after longer exposure, most probably due to the released lactic acid, that might be acceptable for local and short-time treatments. Therefore, CO-releasing nonwovens might be a promising local antimicrobial therapy against biofilm-associated skin wound infections.
Collapse
Affiliation(s)
- Mareike Klinger-Strobel
- Center for Infectious Diseases and Infection Control, Jena University Hospital, Jena, Germany Center for Sepsis Control and Care, Jena University Hospital, Jena, Germany
| | - Steve Gläser
- Friedrich Schiller University Jena, Institute for Inorganic and Analytical Chemistry, Jena, Germany
| | - Oliwia Makarewicz
- Center for Infectious Diseases and Infection Control, Jena University Hospital, Jena, Germany Center for Sepsis Control and Care, Jena University Hospital, Jena, Germany
| | - Ralf Wyrwa
- Innovent e.V., Biomaterials Department, Jena, Germany
| | | | - Mathias W Pletz
- Center for Infectious Diseases and Infection Control, Jena University Hospital, Jena, Germany Center for Sepsis Control and Care, Jena University Hospital, Jena, Germany
| | - Alexander Schiller
- Friedrich Schiller University Jena, Institute for Inorganic and Analytical Chemistry, Jena, Germany
| |
Collapse
|
23
|
Parera E, Marín-García M, Pons R, Comelles F, Suades J, Barnadas-Rodríguez R. Supramolecular Arrangement of Molybdenum Carbonyl Metallosurfactants with CO-Releasing Properties. Organometallics 2016. [DOI: 10.1021/acs.organomet.5b00917] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | - Ramon Pons
- Institut de Química Avançada de Catalunya, IQAC-CSIC, Jordi Girona, 18-26, 08034 Barcelona, Catalonia, Spain
| | - Francesc Comelles
- Institut de Química Avançada de Catalunya, IQAC-CSIC, Jordi Girona, 18-26, 08034 Barcelona, Catalonia, Spain
| | | | | |
Collapse
|
24
|
Wilson JL, Wareham LK, McLean S, Begg R, Greaves S, Mann BE, Sanguinetti G, Poole RK. CO-Releasing Molecules Have Nonheme Targets in Bacteria: Transcriptomic, Mathematical Modeling and Biochemical Analyses of CORM-3 [Ru(CO)3Cl(glycinate)] Actions on a Heme-Deficient Mutant of Escherichia coli. Antioxid Redox Signal 2015; 23:148-62. [PMID: 25811604 PMCID: PMC4492677 DOI: 10.1089/ars.2014.6151] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AIMS Carbon monoxide-releasing molecules (CORMs) are being developed with the ultimate goal of safely utilizing the therapeutic potential of CO clinically, including applications in antimicrobial therapy. Hemes are generally considered the prime targets of CO and CORMs, so we tested this hypothesis using heme-deficient bacteria, applying cellular, transcriptomic, and biochemical tools. RESULTS CORM-3 [Ru(CO)3Cl(glycinate)] readily penetrated Escherichia coli hemA bacteria and was inhibitory to these and Lactococcus lactis, even though they lack all detectable hemes. Transcriptomic analyses, coupled with mathematical modeling of transcription factor activities, revealed that the response to CORM-3 in hemA bacteria is multifaceted but characterized by markedly elevated expression of iron acquisition and utilization mechanisms, global stress responses, and zinc management processes. Cell membranes are disturbed by CORM-3. INNOVATION This work has demonstrated for the first time that CORM-3 (and to a lesser extent its inactivated counterpart) has multiple cellular targets other than hemes. A full understanding of the actions of CORMs is vital to understand their toxic effects. CONCLUSION This work has furthered our understanding of the key targets of CORM-3 in bacteria and raises the possibility that the widely reported antimicrobial effects cannot be attributed to classical biochemical targets of CO. This is a vital step in exploiting the potential, already demonstrated, for using optimized CORMs in antimicrobial therapy.
Collapse
Affiliation(s)
- Jayne Louise Wilson
- 1 Department of Molecular Biology and Biotechnology, The University of Sheffield , Sheffield, United Kingdom
| | - Lauren K Wareham
- 1 Department of Molecular Biology and Biotechnology, The University of Sheffield , Sheffield, United Kingdom
| | - Samantha McLean
- 1 Department of Molecular Biology and Biotechnology, The University of Sheffield , Sheffield, United Kingdom
| | - Ronald Begg
- 2 School of Informatics, The University of Edinburgh , Edinburgh, United Kingdom
| | - Sarah Greaves
- 1 Department of Molecular Biology and Biotechnology, The University of Sheffield , Sheffield, United Kingdom
| | - Brian E Mann
- 3 Department of Chemistry, The University of Sheffield , Sheffield, United Kingdom
| | - Guido Sanguinetti
- 2 School of Informatics, The University of Edinburgh , Edinburgh, United Kingdom
| | - Robert K Poole
- 1 Department of Molecular Biology and Biotechnology, The University of Sheffield , Sheffield, United Kingdom
| |
Collapse
|
25
|
Wareham LK, Poole RK, Tinajero-Trejo M. CO-releasing Metal Carbonyl Compounds as Antimicrobial Agents in the Post-antibiotic Era. J Biol Chem 2015; 290:18999-9007. [PMID: 26055702 PMCID: PMC4521022 DOI: 10.1074/jbc.r115.642926] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The possibility of a “post-antibiotic era” in the 21st century, in which common infections may kill, has prompted research into radically new antimicrobials. CO-releasing molecules (CORMs), mostly metal carbonyl compounds, originally developed for therapeutic CO delivery in animals, are potent antimicrobial agents. Certain CORMs inhibit growth and respiration, reduce viability, and release CO to intracellular hemes, as predicted, but their actions are more complex, as revealed by transcriptomic datasets and modeling. Progress is hindered by difficulties in detecting CO release intracellularly, limited understanding of the biological chemistry of CO reactions with non-heme targets, and the cytotoxicity of some CORMs to mammalian cells.
Collapse
Affiliation(s)
- Lauren K Wareham
- From the Department of Molecular Biology and Biotechnology, The University of Sheffield, Sheffield S10 2TN, United Kingdom
| | - Robert K Poole
- From the Department of Molecular Biology and Biotechnology, The University of Sheffield, Sheffield S10 2TN, United Kingdom
| | - Mariana Tinajero-Trejo
- From the Department of Molecular Biology and Biotechnology, The University of Sheffield, Sheffield S10 2TN, United Kingdom
| |
Collapse
|
26
|
Nagel C, McLean S, Poole RK, Braunschweig H, Kramer T, Schatzschneider U. Introducing [Mn(CO)3(tpa-κ(3)N)](+) as a novel photoactivatable CO-releasing molecule with well-defined iCORM intermediates - synthesis, spectroscopy, and antibacterial activity. Dalton Trans 2015; 43:9986-97. [PMID: 24855638 DOI: 10.1039/c3dt51848e] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
[Mn(CO)3(tpa-κ(3)N)]Br was prepared as a novel photoactivatable CO-releasing molecule (PhotoCORM) from [MnBr(CO)5] and tris(2-pyridylmethyl)amine (tpa) for the delivery of carbon monoxide to biological systems, with the κ(3)N binding mode of the tetradentate tpa ligand demonstrated by X-ray crystallography. The title compound is a CORM prodrug stable in solution in the dark for up to 16 h. However, photoactivation at 365 nm leads to CO release from the metal coordination sphere and transfer to haem proteins, as demonstrated by the standard myoglobin assay. Different iCORM intermediates could be detected with solution IR spectroscopy and assigned using DFT vibrational calculations. The antibacterial activity of the complex was studied on Escherichia coli. No effects were observed when the cultures were either kept in the dark in the presence of PhotoCORM or illuminated in the absence of metal complex. However, photoactivation of [Mn(CO)3(tpa-κ(3)N)]Br at 365 nm led to the appearance of the spectral signatures of CO-coordinated haems in the terminal oxidases of the bacterial electron transport chain in whole-cell UV/Vis absorption spectra. Significant internalization of the PhotoCORM was demonstrated by ICP-MS measurement of the intracellular manganese concentration. In particular when using medium with succinate as the sole carbon source, a very pronounced and concentration-dependent decrease in the E. coli growth rate could be observed upon illumination in the presence of metal complex, which is attributed to the constrained energy metabolism under these conditions and a strong indicator of terminal oxidase inhibition by carbon monoxide delivered from the PhotoCORM.
Collapse
Affiliation(s)
- Christoph Nagel
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany.
| | | | | | | | | | | |
Collapse
|
27
|
Sheldon JR, Heinrichs DE. Recent developments in understanding the iron acquisition strategies of gram positive pathogens. FEMS Microbiol Rev 2015; 39:592-630. [DOI: 10.1093/femsre/fuv009] [Citation(s) in RCA: 166] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/04/2015] [Indexed: 12/26/2022] Open
|
28
|
Synthesis, toxicities and cell proliferation inhibition of CO-releasing molecules containing cobalt. TRANSIT METAL CHEM 2015. [DOI: 10.1007/s11243-015-9931-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
29
|
Becker KW, Skaar EP. Metal limitation and toxicity at the interface between host and pathogen. FEMS Microbiol Rev 2014; 38:1235-49. [PMID: 25211180 DOI: 10.1111/1574-6976.12087] [Citation(s) in RCA: 171] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2014] [Revised: 08/09/2014] [Accepted: 08/31/2014] [Indexed: 12/14/2022] Open
Abstract
Metals are required cofactors for numerous fundamental processes that are essential to both pathogen and host. They are coordinated in enzymes responsible for DNA replication and transcription, relief from oxidative stress, and cellular respiration. However, excess transition metals can be toxic due to their ability to cause spontaneous, redox cycling and disrupt normal metabolic processes. Vertebrates have evolved intricate mechanisms to limit the availability of some crucial metals while concurrently flooding sites of infection with antimicrobial concentrations of other metals. To compete for limited metal within the host while simultaneously preventing metal toxicity, pathogens have developed a series of metal regulatory, acquisition, and efflux systems. This review will cover the mechanisms by which pathogenic bacteria recognize and respond to host-induced metal scarcity and toxicity.
Collapse
Affiliation(s)
- Kyle W Becker
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University School of Medicine, Nashville, TN, USA
| | | |
Collapse
|
30
|
Wilks A, Ikeda-Saito M. Heme utilization by pathogenic bacteria: not all pathways lead to biliverdin. Acc Chem Res 2014; 47:2291-8. [PMID: 24873177 PMCID: PMC4139177 DOI: 10.1021/ar500028n] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
The eukaryotic heme oxygenases (HOs) (E.C. 1.14.99.3) convert heme
to biliverdin, iron, and carbon monoxide (CO) in three successive
oxygenation steps. Pathogenic bacteria require iron for survival and
infection. Extracellular heme uptake from the host plays a critical
role in iron acquisition and virulence. In the past decade, several
HOs required for the release of iron from extracellular heme have
been identified in pathogenic bacteria, including Corynebacterium
diphtheriae, Neisseriae meningitides, and Pseudomonas aeruginosa. The
bacterial enzymes were shown to be structurally and mechanistically
similar to those of the canonical eukaryotic HO enzymes. However,
the recent discovery of the structurally and mechanistically distinct
noncanonical heme oxygenases of Staphylococcus aureus and Mycobacterium tuberculosis has
expanded the reaction manifold of heme degradation. The distinct ferredoxin-like
structural fold and extreme heme ruffling are proposed to give rise
to the alternate heme degradation products in the S.
aureus and M. tuberculosis enzymes. In addition, several “heme-degrading factors”
with no structural homology to either class of HOs have recently been
reported. The identification of these “heme-degrading proteins”
has largely been determined on the basis of in vitro heme degradation
assays. Many of these proteins were reported to produce biliverdin,
although no extensive characterization of the products was performed.
Prior to the characterization of the canonical HO enzymes, the nonenzymatic
degradation of heme and heme proteins in the presence of a reductant
such as ascorbate or hydrazine, a reaction termed “coupled
oxidation”, served as a model for biological heme degradation.
However, it was recognized that there were important mechanistic differences
between the so-called coupled oxidation of heme proteins and enzymatic
heme oxygenation. In the coupled oxidation reaction, the final product,
verdoheme, can readily be converted to biliverdin under hydrolytic
conditions. The differences between heme oxygenation by the canonical
and noncanonical HOs and coupled oxidation will be discussed in the
context of the stabilization of the reactive FeIII–OOH
intermediate and regioselective heme hydroxylation. Thus, in the determination
of heme oxygenase activity in vitro, it is important to ensure that
the reaction proceeds through successive oxygenation steps. We further
suggest that when bacterial heme degradation is being characterized,
a systems biology approach combining genetics, mechanistic enzymology,
and metabolite profiling should be undertaken.
Collapse
Affiliation(s)
- Angela Wilks
- Department
of Pharmaceutical Sciences, University of Maryland, Baltimore, Maryland 21201-1140, United States
| | - Masao Ikeda-Saito
- Institute
of Multidisciplinary Research for Advanced Materials, Tohoku University Katahira, Aoba, Sendai 980-8577, Japan
| |
Collapse
|
31
|
Bang CS, Kruse R, Demirel I, Onnberg A, Söderquist B, Persson K. Multiresistant uropathogenic extended-spectrum β-lactamase (ESBL)-producing Escherichia coli are susceptible to the carbon monoxide releasing molecule-2 (CORM-2). Microb Pathog 2013; 66:29-35. [PMID: 24361394 DOI: 10.1016/j.micpath.2013.12.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 11/27/2013] [Accepted: 12/06/2013] [Indexed: 10/25/2022]
Abstract
Carbon monoxide (CO) releasing molecules (CO-RMs) have been shown to inhibit growth of commensal Escherichia coli (E. coli). In the present study we examined the effect of CORM-2 on uropathogenic E. coli (UPEC) that produces extended-spectrum β-lactamase (ESBL). Viability experiments showed that CORM-2 inhibited the growth of several different ESBL-producing UPEC isolates and that 500 μM CORM-2 had a bactericidal effect within 4 h. The bactericidal effect of CORM-2 was significantly more pronounced than the effect of the antibiotic nitrofurantoin. CORM-2 demonstrated a low level of cytotoxicity in eukaryotic cells (human bladder epithelial cell line 5637) at the concentrations and time-points where the antibacterial effect was obtained. Real-time RT-PCR studies of different virulence genes showed that the expression of capsule group II kpsMT II and serum resistance traT was reduced and that some genes encoding iron acquisition systems were altered by CORM-2. Our results demonstrate that CORM-2 has a fast bactericidal effect against multiresistant ESBL-producing UPEC isolates, and also identify some putative UPEC virulence factors as targets for CORM-2. CO-RMs may be candidate drugs for further studies in the field of finding new therapeutic approaches for treatment of uropathogenic ESBLproducing E. coli.
Collapse
Affiliation(s)
- Charlotte Sahlberg Bang
- Department of Clinical Medicine, School of Health and Medical Sciences, Örebro University, Örebro, Sweden
| | - Robert Kruse
- Department of Clinical Medicine, School of Health and Medical Sciences, Örebro University, Örebro, Sweden
| | - Isak Demirel
- Department of Clinical Medicine, School of Health and Medical Sciences, Örebro University, Örebro, Sweden
| | - Anna Onnberg
- Department of Clinical Medicine, School of Health and Medical Sciences, Örebro University, Örebro, Sweden; Department of Laboratory Medicine, Clinical Microbiology, Örebro University Hospital, Örebro, Sweden
| | - Bo Söderquist
- Department of Clinical Medicine, School of Health and Medical Sciences, Örebro University, Örebro, Sweden; Department of Laboratory Medicine, Clinical Microbiology, Örebro University Hospital, Örebro, Sweden
| | - Katarina Persson
- Department of Clinical Medicine, School of Health and Medical Sciences, Örebro University, Örebro, Sweden.
| |
Collapse
|
32
|
McLean S, Begg R, Jesse HE, Mann BE, Sanguinetti G, Poole RK. Analysis of the bacterial response to Ru(CO)3Cl(Glycinate) (CORM-3) and the inactivated compound identifies the role played by the ruthenium compound and reveals sulfur-containing species as a major target of CORM-3 action. Antioxid Redox Signal 2013; 19:1999-2012. [PMID: 23472713 PMCID: PMC3869425 DOI: 10.1089/ars.2012.5103] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
AIMS Carbon monoxide (CO)-releasing molecules (CO-RMs) are being developed with the ultimate goal of safely utilizing the therapeutic potential of CO clinically. One such application is antimicrobial activity; therefore, we aimed to characterize and compare the effects of the CO-RM, CORM-3, and its inactivated counterpart, where all labile CO has been removed, at the transcriptomic and cellular level. RESULTS We found that both compounds are able to penetrate the cell, but the inactive form is not inhibitory to bacterial growth under conditions where CORM-3 is. Transcriptomic analyses revealed that the bacterial response to inactivated CORM-3 (iCORM-3) is much lower than to the active compound and that a wide range of processes appear to be affected by CORM-3 and to a lesser extent iCORM-3, including energy metabolism, membrane transport, motility, and the metabolism of many sulfur-containing species, including cysteine and methionine. INNOVATION This work has demonstrated that both CORM-3 and its inactivated counterpart react with cellular functions to yield a complex response at the transcriptomic level. A full understanding of the actions of both compounds is vital to understand the toxic effects of CO-RMs. CONCLUSION This work has furthered our understanding of how CORM-3 behaves at the cellular level and identifies the responses that occur when the host is exposed to the Ru compound as well as those that result from the released CO. This is a vital step in laying the groundwork for future development of optimized CO-RMs for eventual use in antimicrobial therapy.
Collapse
Affiliation(s)
- Samantha McLean
- 1 Department of Molecular Biology and Biotechnology, The University of Sheffield , Sheffield, United Kingdom
| | | | | | | | | | | |
Collapse
|
33
|
Wilks A, Heinzl G. Heme oxygenation and the widening paradigm of heme degradation. Arch Biochem Biophys 2013; 544:87-95. [PMID: 24161941 DOI: 10.1016/j.abb.2013.10.013] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Revised: 10/09/2013] [Accepted: 10/15/2013] [Indexed: 12/11/2022]
Abstract
Heme degradation through the action of heme oxygenase (HO) is unusual in that it utilizes heme as both a substrate and cofactor for its own degradation. HO catalyzes the oxygen-dependent degradation of heme to biliverdin with the release of CO and "free" iron. The characterization of HO enzymes from humans to bacteria reveals a similar overall structural fold that contributes to the unique reaction manifold. The heme oxygenases share a similar heme-dependent activation of O2 to the ferric hydroperoxide as that of the cytochrome P450s and peroxidases. However, whereas the P450s promote cleavage of the ferric hydroperoxide OO bond to the oxoferryl species the HOs stabilize the ferric hydroperoxide promoting hydroxylation at the heme edge. The alternate reaction pathway in HO is achieved through the conformational flexibility and extensive hydrogen bond network within the heme binding site priming the heme for hydroxylation. Until recently it was believed that all heme degrading enzymes converted heme to biliverdin and iron, with the release of carbon monoxide (CO). However, the recent discovery of the bacterial IsdG-like heme degrading proteins of Staphylococcus aureus, Bacillus anthracis and Mycobacterium tuberculosis has expanded the reaction manifold of heme oxidation. Characterization of the heme degradation products in the IsdG-like reaction suggests a mechanism distinct from the classical HOs. In the following review we will discuss the structure-function of the canonical HOs as it relates to the emerging alternate reaction manifold of the IsdG-like proteins.
Collapse
Affiliation(s)
- Angela Wilks
- Department of Pharmaceutical Sciences, University of Maryland, Baltimore, MD 21201-1180, USA.
| | - Geoffrey Heinzl
- Department of Pharmaceutical Sciences, University of Maryland, Baltimore, MD 21201-1180, USA
| |
Collapse
|
34
|
Motterlini R, Haas B, Foresti R. Emerging concepts on the anti-inflammatory actions of carbon monoxide-releasing molecules (CO-RMs). Med Gas Res 2012; 2:28. [PMID: 23171578 PMCID: PMC3536644 DOI: 10.1186/2045-9912-2-28] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2012] [Accepted: 11/07/2012] [Indexed: 02/08/2023] Open
Abstract
Carbon monoxide-releasing molecules (CO-RMs) are a class of organometallo compounds capable of delivering controlled quantities of CO gas to cells and tissues thus exerting a broad spectrum of pharmacological effects. CO-RMs containing transition metal carbonyls were initially implemented to mimic the function of heme oxygenase-1 (HMOX1), a stress inducible defensive protein that degrades heme to CO and biliverdin leading to anti-oxidant and anti-inflammatory actions. Ten years after their discovery, the research on the chemistry and biological activities of CO-RMs has greatly intensified indicating that their potential use as CO delivering agents for the treatment of several pathological conditions is feasible. Although CO-RMs are a class of compounds that structurally diverge from traditional organic-like pharmaceuticals, their behaviour in the biological environments is progressively being elucidated revealing interesting features of metal-carbonyl chemistry towards cellular targets. Specifically, the presence of carbonyl groups bound to transition metals such as ruthenium, iron or manganese appears to make CO-RMs unique in their ability to transfer CO intracellularly and amplify the mechanisms of signal transduction mediated by CO. In addition to their well-established vasodilatory activities and protective effects against organ ischemic damage, CO-RMs are emerging for their striking anti-inflammatory properties which may be the result of the multiple activities of metal carbonyls in the control of redox signaling, oxidative stress and cellular respiration. Here, we review evidence on the pharmacological effects of CO-RMs in models of acute and chronic inflammation elaborating on some emerging concepts that may help to explain the chemical reactivity and mechanism(s) of action of this distinctive class of compounds in biological systems.
Collapse
Affiliation(s)
- Roberto Motterlini
- INSERM U955, Equipe 3, Faculty of Medicine, University Paris-Est Creteil, Creteil, France.
| | | | | |
Collapse
|