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Napoli C, Coscioni E, Trama U, Strozziero MG, Benincasa G. An evidence-based debate on epigenetics and immunosenescence in COVID-19. CURRENT RESEARCH IN IMMUNOLOGY 2023; 4:100069. [PMID: 37781451 PMCID: PMC10539895 DOI: 10.1016/j.crimmu.2023.100069] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 09/01/2023] [Accepted: 09/06/2023] [Indexed: 10/03/2023] Open
Abstract
Immunosenescence contributes to the decline of immune function leading to a reduced ability to respond to severe coronavirus disease 2019 (COVID-19) in elderly patients. Clinical course of COVID-19 is widely heterogeneous and guided by the possible interplay between genetic background and epigenetic-sensitive mechanisms underlying the immunosenescence which could explain, at least in part, the higher percentage of disease severity in elderly individuals. The most convincing evidence regards the hypomethylation of the angiotensin-converting enzyme 2 (ACE2) promoter gene in lungs as well as the citrullination of histone H3 in neutrophils which have been associated with worsening of COVID-19 outcome in elderly patients. In contrast, centenarians who have showed milder symptoms have been associated to a younger "epigenetic age" based on DNA methylation profiles at specific genomic sites (epigenetic clock). Some large prospective studies showed that the acceleration of epigenetic aging as well as the shortening of telomeres were significantly associated with lymphopenia and poor outcome suggesting prognostic biomarkers in elderly COVID-19 patients. Furthermore, randomized clinical trials showed that statins, L-arginine, and resveratrol could mediate anti-inflammatory effects via indirect epigenetic interference and might improve COVID-19 outcome. Here, we discuss the epigenetic-sensitive events which might contribute to increase the risk of severity and mortality in older subjects and possible targeted therapies to counteract immunosenescence.
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Affiliation(s)
- Claudio Napoli
- Department of Advanced Medical and Surgical Sciences (DAMSS), University of Campania “Luigi Vanvitelli”, Naples, Italy
- U.O.C. Division of Clinical Immunology, Immunohematology, Transfusion Medicine and Transplant Immunology, Department of Internal Medicine and Specialistics, University of Campania “Luigi Vanvitelli”, Naples, Italy
| | - Enrico Coscioni
- Division of Cardiac Surgery, AOU San Giovanni di Dio e Ruggid'Aragona, 84131, Salerno, Italy
| | - Ugo Trama
- Regional Pharmaceutical Unit, Campania Region, 80143 Naples, Italy
| | - Maria Grazia Strozziero
- Department of Advanced Medical and Surgical Sciences (DAMSS), University of Campania “Luigi Vanvitelli”, Naples, Italy
- IRCCS Synlab SDN Naples Italy
| | - Giuditta Benincasa
- Department of Advanced Medical and Surgical Sciences (DAMSS), University of Campania “Luigi Vanvitelli”, Naples, Italy
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2
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The Evolution of Nitric Oxide Function: From Reactivity in the Prebiotic Earth to Examples of Biological Roles and Therapeutic Applications. Antioxidants (Basel) 2022; 11:antiox11071222. [PMID: 35883712 PMCID: PMC9311577 DOI: 10.3390/antiox11071222] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 06/14/2022] [Accepted: 06/16/2022] [Indexed: 12/01/2022] Open
Abstract
Nitric oxide was once considered to be of marginal interest to the biological sciences and medicine; however, there is now wide recognition, but not yet a comprehensive understanding, of its functions and effects. NO is a reactive, toxic free radical with numerous biological targets, especially metal ions. However, NO and its reaction products also play key roles as reductant and oxidant in biological redox processes, in signal transduction, immunity and infection, as well as other roles. Consequently, it can be sensed, metabolized and modified in biological systems. Here, we present a brief overview of the chemistry and biology of NO—in particular, its origins in geological time and in contemporary biology, its toxic consequences and its critical biological functions. Given that NO, with its intrinsic reactivity, appeared in the early Earth’s atmosphere before the evolution of complex lifeforms, we speculate that the potential for toxicity preceded biological function. To examine this hypothesis, we consider the nature of non-biological and biological targets of NO, the evolution of biological mechanisms for NO detoxification, and how living organisms generate this multifunctional gas.
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Peter MCS, Gayathry R, Peter VS. Inducible Nitric Oxide Synthase/Nitric Oxide System as a Biomarker for Stress and Ease Response in Fish: Implication on Na+ Homeostasis During Hypoxia. Front Physiol 2022; 13:821300. [PMID: 35655956 PMCID: PMC9152262 DOI: 10.3389/fphys.2022.821300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 04/06/2022] [Indexed: 11/22/2022] Open
Abstract
The cellular and organismal response to stressor-driven stimuli evokes stress response in vertebrates including fishes. Fishes have evolved varied patterns of stress response, including ionosmotic stress response, due to their sensitivity to both intrinsic and extrinsic stimuli. Fishes that experience hypoxia, a detrimental stressor that imposes systemic and cellular stress response, can evoke disturbed ion homeostasis. In addition, like other vertebrates, fishes have also developed mechanisms to recover from the impact of stress by way of shifting stress response into ease response that could reduce the magnitude of stress response with the aid of certain neuroendocrine signals. Nitric oxide (NO) has been identified as a potent molecule that attenuates the impact of ionosmotic stress response in fish, particularly during hypoxia stress. Limited information is, however, available on this important aspect of ion transport physiology that contributes to the mechanistic understanding of survival during environmental challenges. The present review, thus, discusses the role of NO in Na+ homeostasis in fish particularly in stressed conditions. Isoforms of nitric oxide synthase (NOS) are essential for the synthesis and availability of NO at the cellular level. The NOS/NO system, thus, appears as a unique molecular drive that performs both regulatory and integrative mechanisms of control within and across varied fish ionocytes. The activation of the inducible NOS (iNOS)/NO system during hypoxia stress and its action on the dynamics of Na+/K+-ATPase, an active Na+ transporter in fish ionocytes, reveal that the iNOS/NO system controls cellular and systemic Na+ transport in stressed fish. In addition, the higher sensitivity of iNOS to varied physical stressors in fishes and the ability of NO to lower the magnitude of ionosmotic stress in hypoxemic fish clearly put forth NO as an ease-promoting signal molecule in fishes. This further points to the signature role of the iNOS/NO system as a biomarker for stress and ease response in the cycle of adaptive response in fish.
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Affiliation(s)
- M. C. Subhash Peter
- Inter-University Centre for Evolutionary and Integrative Biology iCEIB, School of Life Science, University of Kerala, Kariavattom, Thiruvananthapuram, India
- Department of Zoology, University of Kerala, Kariavattom, Thiruvananthapuram, India
- *Correspondence: M. C. Subhash Peter,
| | - R. Gayathry
- Inter-University Centre for Evolutionary and Integrative Biology iCEIB, School of Life Science, University of Kerala, Kariavattom, Thiruvananthapuram, India
| | - Valsa S. Peter
- Inter-University Centre for Evolutionary and Integrative Biology iCEIB, School of Life Science, University of Kerala, Kariavattom, Thiruvananthapuram, India
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4
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Alhashimi RT, Ghatge MS, Donkor AK, Deshpande TM, Anabaraonye N, Alramadhani D, Danso-Danquah R, Huang B, Zhang Y, Musayev FN, Abdulmalik O, Safo MK. Design, Synthesis, and Antisickling Investigation of a Nitric Oxide-Releasing Prodrug of 5HMF for the Treatment of Sickle Cell Disease. Biomolecules 2022; 12:696. [PMID: 35625623 PMCID: PMC9138457 DOI: 10.3390/biom12050696] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 05/05/2022] [Accepted: 05/10/2022] [Indexed: 02/02/2023] Open
Abstract
5-hydroxyfurfural (5HMF), an allosteric effector of hemoglobin (Hb) with an ability to increase Hb affinity for oxygen has been studied extensively for its antisickling effect in vitro and in vivo, and in humans for the treatment of sickle cell disease (SCD). One of the downstream pathophysiologies of SCD is nitric oxide (NO) deficiency, therefore increasing NO (bio)availability is known to mitigate the severity of SCD symptoms. We report the synthesis of an NO-releasing prodrug of 5HMF (5HMF-NO), which in vivo, is expected to be bio-transformed into 5HMF and NO, with concomitant therapeutic activities. In vitro studies showed that when incubated with whole blood, 5HMF-NO releases NO, as anticipated. When incubated with sickle blood, 5HMF-NO formed Schiff base adduct with Hb, increased Hb affinity for oxygen, and prevented hypoxia-induced erythrocyte sickling, which at 1 mM concentration were 16%, 10% and 27%, respectively, compared to 21%, 18% and 21% for 5HMF. Crystal structures of 5HMF-NO with Hb showed 5HMF-NO bound to unliganded (deoxygenated) Hb, while the hydrolyzed product, 5HMF bound to liganded (carbonmonoxy-ligated) Hb. Our findings from this proof-of-concept study suggest that the incorporation of NO donor group to 5HMF and analogous molecules could be a novel beneficial strategy to treat SCD and warrants further detailed in vivo studies.
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Affiliation(s)
- Rana T. Alhashimi
- Department of Medicinal Chemistry and The Institute for Structural Biology, Drug Discovery and Development, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23298, USA; (R.T.A.); (M.S.G.); (A.K.D.); (D.A.); (R.D.-D.); (B.H.); (Y.Z.); (F.N.M.)
| | - Mohini S. Ghatge
- Department of Medicinal Chemistry and The Institute for Structural Biology, Drug Discovery and Development, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23298, USA; (R.T.A.); (M.S.G.); (A.K.D.); (D.A.); (R.D.-D.); (B.H.); (Y.Z.); (F.N.M.)
| | - Akua K. Donkor
- Department of Medicinal Chemistry and The Institute for Structural Biology, Drug Discovery and Development, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23298, USA; (R.T.A.); (M.S.G.); (A.K.D.); (D.A.); (R.D.-D.); (B.H.); (Y.Z.); (F.N.M.)
| | | | - Nancy Anabaraonye
- Division of Hematology, The Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA; (N.A.); (O.A.)
| | - Dina Alramadhani
- Department of Medicinal Chemistry and The Institute for Structural Biology, Drug Discovery and Development, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23298, USA; (R.T.A.); (M.S.G.); (A.K.D.); (D.A.); (R.D.-D.); (B.H.); (Y.Z.); (F.N.M.)
| | - Richmond Danso-Danquah
- Department of Medicinal Chemistry and The Institute for Structural Biology, Drug Discovery and Development, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23298, USA; (R.T.A.); (M.S.G.); (A.K.D.); (D.A.); (R.D.-D.); (B.H.); (Y.Z.); (F.N.M.)
| | - Boshi Huang
- Department of Medicinal Chemistry and The Institute for Structural Biology, Drug Discovery and Development, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23298, USA; (R.T.A.); (M.S.G.); (A.K.D.); (D.A.); (R.D.-D.); (B.H.); (Y.Z.); (F.N.M.)
| | - Yan Zhang
- Department of Medicinal Chemistry and The Institute for Structural Biology, Drug Discovery and Development, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23298, USA; (R.T.A.); (M.S.G.); (A.K.D.); (D.A.); (R.D.-D.); (B.H.); (Y.Z.); (F.N.M.)
| | - Faik N. Musayev
- Department of Medicinal Chemistry and The Institute for Structural Biology, Drug Discovery and Development, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23298, USA; (R.T.A.); (M.S.G.); (A.K.D.); (D.A.); (R.D.-D.); (B.H.); (Y.Z.); (F.N.M.)
| | - Osheiza Abdulmalik
- Division of Hematology, The Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA; (N.A.); (O.A.)
| | - Martin K. Safo
- Department of Medicinal Chemistry and The Institute for Structural Biology, Drug Discovery and Development, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23298, USA; (R.T.A.); (M.S.G.); (A.K.D.); (D.A.); (R.D.-D.); (B.H.); (Y.Z.); (F.N.M.)
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TREM-2 mediates dendritic cell–induced NO to suppress Th17 activation and ameliorate chronic kidney diseases. J Mol Med (Berl) 2022; 100:917-931. [DOI: 10.1007/s00109-022-02201-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 03/13/2022] [Accepted: 04/25/2022] [Indexed: 10/18/2022]
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Zhang F, Yan Y, Han X, Du JC, Zhu R, Liu XH. Design and synthesis of the 4H-chromenone derivatives against psoriasis. Bioorg Chem 2022; 120:105640. [PMID: 35121555 DOI: 10.1016/j.bioorg.2022.105640] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 01/10/2022] [Accepted: 01/20/2022] [Indexed: 12/11/2022]
Abstract
On basis of Quercetin moiety, two series of 20 new compounds were designed and synthesized accordingly in this study, and their anti-inflammatory activities in vitro and in vivo were evaluated. At last, compound 8A2: 3- (1- (2- (4- (5-bromo-2-chlorobenzoyl) piperazin-1-yl) ethyl)-1H-1,2,3-triazol-4-yl) methoxy)-5,7-dimethoxy-2-(3,4,5-trimethoxyphenyl)-4H-chromen-4-one with low toxicity was found the best one for inhibiting of NO. Meanwhile, this compound could significantly inhibit the expression of IL-6 (Interleukin-6), TNF-α (Tumor necrosis factor-α) and IL-17 (Interleukin-17), and also significantly down-regulate IL-17 mRNA psoriasis model in vitro. Further studies were performed to establish mouse psoriasis model induced by Imiquimod (IMQ), and the preliminary mechanism indicated that compound 8A2 may alleviate mouse psoriasis through obstructed the JAK1/2-STAT1/3 pathway. This study should be provide a basis for further study of effective treatment of psoriasis.
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Affiliation(s)
- Famin Zhang
- School of Pharmacy, Anhui Province Key Laboratory of Major Autoimmune Diseases Anhui Medical University, Hefei 230032, PR China
| | - Yaoyao Yan
- School of Pharmacy, Anhui Province Key Laboratory of Major Autoimmune Diseases Anhui Medical University, Hefei 230032, PR China
| | - Xu Han
- School of Pharmacy, Anhui Province Key Laboratory of Major Autoimmune Diseases Anhui Medical University, Hefei 230032, PR China
| | - Jun Cheng Du
- School of Pharmacy, Anhui Province Key Laboratory of Major Autoimmune Diseases Anhui Medical University, Hefei 230032, PR China
| | - Rende Zhu
- School of Pharmacy, Anhui Province Key Laboratory of Major Autoimmune Diseases Anhui Medical University, Hefei 230032, PR China
| | - Xin Hua Liu
- School of Pharmacy, Anhui Province Key Laboratory of Major Autoimmune Diseases Anhui Medical University, Hefei 230032, PR China.
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7
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Gessner N, Bäck AK, Knorr J, Nagel C, Marquetand P, Schatzschneider U, González L, Nuernberger P. Ultrafast photochemistry of a molybdenum carbonyl-nitrosyl complex with a triazacyclononane coligand. Phys Chem Chem Phys 2021; 23:24187-24199. [PMID: 34679150 DOI: 10.1039/d1cp03514b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Transition metal complexes capable of releasing small molecules such as carbon monoxide and nitric oxide upon photoactivation are versatile tools in various fields of chemistry and biology. In this work, we report on the ultrafast photochemistry of [Mo(CO)2(NO)(iPr3tacn)]PF6 (iPr3tacn = 1,4,7-triisopropyl-1,4,7-triazacyclononane), which was characterized under continuous illumination and with femtosecond UV-pump/UV-probe and UV-pump/MIR-probe spectroscopy, as well as with stationary calculations. The experimental and theoretical results demonstrate that while the photodissociation of one of the two CO ligands upon UV excitation can be inferred both on an ultrafast timescale as well as under exposure times of several minutes, no evidence of NO release is observed under the same conditions. The binding mode of the diatomic ligands is impacted by the electronic excitation, and transient intermediates are observed on a timescale of tens of picoseconds before CO is released from the coordination sphere. Furthermore, based on calculated potential energy scans, we suggest that photolysis of NO could be possible after a subsequent excitation of an electronically excited state with a second laser pulse, or by accessing low-lying excited states that otherwise cannot be directly excited by light.
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Affiliation(s)
- Niklas Gessner
- a Physikalische Chemie II, Ruhr-Universität Bochum, Universitätsstraße 150, D-44801 Bochum, Germany; Institut für Physikalische und Theoretische Chemie, Universität Regensburg, Universitätsstraße 31, D-93053 Regensburg, Germany.
| | - Anna K Bäck
- Institute of Theoretical Chemistry, Faculty of Chemistry, University of Vienna, Währinger Str. 17, A-1090 Wien, Austria
| | - Johannes Knorr
- Physikalische Chemie II, Ruhr-Universität Bochum, Universitätsstraße 150, D-44801 Bochum, Germany; Erlangen Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander University Erlangen-Nürnberg (FAU), Paul-Gordan-Straße 6, 91052 Erlangen, Germany
| | - Christoph Nagel
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Philipp Marquetand
- Institute of Theoretical Chemistry, Faculty of Chemistry, University of Vienna, Währinger Str. 17, A-1090 Wien, Austria
| | - Ulrich Schatzschneider
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Leticia González
- Institute of Theoretical Chemistry, Faculty of Chemistry, University of Vienna, Währinger Str. 17, A-1090 Wien, Austria
| | - Patrick Nuernberger
- a Physikalische Chemie II, Ruhr-Universität Bochum, Universitätsstraße 150, D-44801 Bochum, Germany; Institut für Physikalische und Theoretische Chemie, Universität Regensburg, Universitätsstraße 31, D-93053 Regensburg, Germany.
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8
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Ishihara S, Machino T, Deguchi K, Ohki S, Mogami Y, Tansho M, Shimizu T, Hill JP, Yamauchi Y, Iyi N. Disposable Nitric Oxide Generator Based on a Structurally Deformed Nitrite-Type Layered Double Hydroxide. Inorg Chem 2021; 60:16008-16015. [PMID: 33861575 DOI: 10.1021/acs.inorgchem.1c00456] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The inhalation of nitric oxide (NO), which acts as a selective vasodilator of pulmonary blood vessels, is an established medical treatment. However, its wide adoption has been limited by the lack of a convenient delivery technique of this unstable gas. Here we report that a solid mixture of FeIISO4·7H2O and a layered double hydroxide (LDH) containing nitrite (NO2-) in the interlayer spaces (NLDH) stably generates NO at a therapeutic level (∼40 ppm over 12 h from freshly mixed solids; ∼80 ppm for 5-10 h from premixed solids) under air flow (0.25 L min-1) if the NLDH has been prepared by using a reconstruction method. Mg/Al-type LDH was calcined at 550 °C to remove interlayer CO32- and then treated with NaNO2 in water to reconstruct the NLDH. This one-pot, organic solvent-free process can be performed at large scales and is suitable for mass production. Humid air promotes anion exchange between NO2- and SO42- in the solid mixture, resulting in persistent interactions of NO2- and Fe2+, generating NO. In contrast to the previously reported NLDH prepared using an anion-exchange method, the reconstructed NLDH exhibits stable and persistent generation of NO because of partial deformation of the layered structures (e.g., particle aggregation, reduced crystallinity, and enhanced basicity). Degradation of the solid mixture is suppressed under dry conditions, so that a portable cartridge column that is readily available as an NO source for emergency situations can be prepared. This work demonstrates that the interlayer nanospace of LDH serves as a reaction mediator for excellent controllability of solid-state reactions. This inexpensive and disposable NO generator will facilitate NO inhalation therapy in developing countries and nonhospital locations.
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Affiliation(s)
- Shinsuke Ishihara
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- JST-ERATO Yamauchi Materials Space-Tectonics Project, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Takeshi Machino
- Department of Cardiology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan
| | - Kenzo Deguchi
- NMR Station, Research Network and Facility Service Division, National Institute for Materials Science (NIMS), 3-13 Sakura, Tsukuba, Ibaraki 305-0003, Japan
| | - Shinobu Ohki
- NMR Station, Research Network and Facility Service Division, National Institute for Materials Science (NIMS), 3-13 Sakura, Tsukuba, Ibaraki 305-0003, Japan
| | - Yuuki Mogami
- NMR Station, Research Network and Facility Service Division, National Institute for Materials Science (NIMS), 3-13 Sakura, Tsukuba, Ibaraki 305-0003, Japan
| | - Masataka Tansho
- NMR Station, Research Network and Facility Service Division, National Institute for Materials Science (NIMS), 3-13 Sakura, Tsukuba, Ibaraki 305-0003, Japan
| | - Tadashi Shimizu
- NMR Station, Research Network and Facility Service Division, National Institute for Materials Science (NIMS), 3-13 Sakura, Tsukuba, Ibaraki 305-0003, Japan
| | - Jonathan P Hill
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- JST-ERATO Yamauchi Materials Space-Tectonics Project, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Yusuke Yamauchi
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- JST-ERATO Yamauchi Materials Space-Tectonics Project, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Australian Institute for Bioengineering and Nanotechnology and School of Chemical Engineering, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Nobuo Iyi
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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9
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Reaction mechanisms relevant to the formation and utilization of [Ru(edta)(NO)] complexes in aqueous media. J Inorg Biochem 2021; 225:111595. [PMID: 34555599 DOI: 10.1016/j.jinorgbio.2021.111595] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/13/2021] [Accepted: 08/27/2021] [Indexed: 12/11/2022]
Abstract
The advancement of Ru(edta) complexes (edta4- = ethylenediamineteraacetate) mediated reactions, including NO generation and its utilization, has not been systematically reviewed to date. This review aims to report the research progress that has been made in exploring the application of Ru(edta) complexes in trapping and generation of NO. Furthermore, utilization of the potential of Ru(edta) complexes to mimic NO synthase and nitrite reductase activity, including thermodynamics and kinetics of NO binding to Ru(edta) complexes, their NO scavenging (in vitro), and antitumor activity will be discussed. Also, the role of [Ru(edta)(NO)] in mediating electrochemical reduction of nitrite, S-nitrosylation of biological thiols, and cross-talk between NO and H2S, will be covered. Reports on the NO-related chemistry of Fe(edta) complexes showing similar behavior are contextualized in this review for comparison purposes. The research contributions compiled herein will provide in-depth mechanistic knowledge for understanding the diverse routes pertaining to the formation of the [Ru(edta)(NO)] species, and its role in effecting the aforementioned reactions of biochemical significance.
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10
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Rodríguez-Fdez S, Lorenzo-Martín LF, Fabbiano S, Menacho-Márquez M, Sauzeau V, Dosil M, Bustelo XR. New Functions of Vav Family Proteins in Cardiovascular Biology, Skeletal Muscle, and the Nervous System. BIOLOGY 2021; 10:biology10090857. [PMID: 34571735 PMCID: PMC8472352 DOI: 10.3390/biology10090857] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 08/27/2021] [Accepted: 08/29/2021] [Indexed: 11/16/2022]
Abstract
Simple Summary In this review, we provide information on the role of Vav proteins, a group of signaling molecules that act as both Rho GTPase activators and adaptor molecules, in the cardiovascular system, skeletal muscle, and the nervous system. We also describe how these functions impact in other physiological and pathological processes such as sympathoregulation, blood pressure regulation, systemic metabolism, and metabolic syndrome. Abstract Vav proteins act as tyrosine phosphorylation-regulated guanosine nucleotide exchange factors for Rho GTPases and as molecular scaffolds. In mammals, this family of signaling proteins is composed of three members (Vav1, Vav2, Vav3) that work downstream of protein tyrosine kinases in a wide variety of cellular processes. Recent work with genetically modified mouse models has revealed that these proteins play key signaling roles in vascular smooth and skeletal muscle cells, specific neuronal subtypes, and glia cells. These functions, in turn, ensure the proper regulation of blood pressure levels, skeletal muscle mass, axonal wiring, and fiber myelination events as well as systemic metabolic balance. The study of these mice has also led to the discovery of new physiological interconnection among tissues that contribute to the ontogeny and progression of different pathologies such as, for example, hypertension, cardiovascular disease, and metabolic syndrome. Here, we provide an integrated view of all these new Vav family-dependent signaling and physiological functions.
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Affiliation(s)
- Sonia Rodríguez-Fdez
- Molecular Mechanisms of Cancer Program, Centro de Investigación del Cáncer, CSIC-University of Salamanca, 37007 Salamanca, Spain; (S.R.-F.); (L.F.L.-M.); (S.F.); (M.M.-M.); (V.S.); (M.D.)
- Instituto de Biología Molecular y Celular del Cáncer, CSIC-University of Salamanca, 37007 Salamanca, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), CSIC-University of Salamanca, 37007 Salamanca, Spain
| | - L. Francisco Lorenzo-Martín
- Molecular Mechanisms of Cancer Program, Centro de Investigación del Cáncer, CSIC-University of Salamanca, 37007 Salamanca, Spain; (S.R.-F.); (L.F.L.-M.); (S.F.); (M.M.-M.); (V.S.); (M.D.)
- Instituto de Biología Molecular y Celular del Cáncer, CSIC-University of Salamanca, 37007 Salamanca, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), CSIC-University of Salamanca, 37007 Salamanca, Spain
| | - Salvatore Fabbiano
- Molecular Mechanisms of Cancer Program, Centro de Investigación del Cáncer, CSIC-University of Salamanca, 37007 Salamanca, Spain; (S.R.-F.); (L.F.L.-M.); (S.F.); (M.M.-M.); (V.S.); (M.D.)
- Instituto de Biología Molecular y Celular del Cáncer, CSIC-University of Salamanca, 37007 Salamanca, Spain
| | - Mauricio Menacho-Márquez
- Molecular Mechanisms of Cancer Program, Centro de Investigación del Cáncer, CSIC-University of Salamanca, 37007 Salamanca, Spain; (S.R.-F.); (L.F.L.-M.); (S.F.); (M.M.-M.); (V.S.); (M.D.)
- Instituto de Inmunología Clínica y Experimental, CONICET, Rosario 3100, Argentina
| | - Vincent Sauzeau
- Molecular Mechanisms of Cancer Program, Centro de Investigación del Cáncer, CSIC-University of Salamanca, 37007 Salamanca, Spain; (S.R.-F.); (L.F.L.-M.); (S.F.); (M.M.-M.); (V.S.); (M.D.)
- Institut du Thorax, UMR1087 CNRS 6291, INSERM, Université de Nantes, 44096 Nantes, France
| | - Mercedes Dosil
- Molecular Mechanisms of Cancer Program, Centro de Investigación del Cáncer, CSIC-University of Salamanca, 37007 Salamanca, Spain; (S.R.-F.); (L.F.L.-M.); (S.F.); (M.M.-M.); (V.S.); (M.D.)
- Instituto de Biología Molecular y Celular del Cáncer, CSIC-University of Salamanca, 37007 Salamanca, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), CSIC-University of Salamanca, 37007 Salamanca, Spain
| | - Xosé R. Bustelo
- Molecular Mechanisms of Cancer Program, Centro de Investigación del Cáncer, CSIC-University of Salamanca, 37007 Salamanca, Spain; (S.R.-F.); (L.F.L.-M.); (S.F.); (M.M.-M.); (V.S.); (M.D.)
- Instituto de Biología Molecular y Celular del Cáncer, CSIC-University of Salamanca, 37007 Salamanca, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), CSIC-University of Salamanca, 37007 Salamanca, Spain
- Correspondence: ; Tel.: +34-663-194-634
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11
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Chen Z, Peng S, Liu S, Li C, Cai X, Ma D, Zhang W. Fluorescent carbon dots loading nitric oxide for bacterial labeling and killing. INT J POLYM MATER PO 2021. [DOI: 10.1080/00914037.2021.1960337] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Ziheng Chen
- Guangdong Provincial Engineering and Technological Research Center for Drug Carrier Development, Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering, Jinan University, Guangzhou, China
| | - Song Peng
- School of Stomatology of Jinan University, Jinan University, Guangzhou, China
- The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Shixin Liu
- Guangdong Provincial Engineering and Technological Research Center for Drug Carrier Development, Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering, Jinan University, Guangzhou, China
| | - Chengpeng Li
- School of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang, China
| | - Xiang Cai
- Department of Light Chemical Engineering, Guangdong Polytechnic, Foshan, China
| | - Dong Ma
- Guangdong Provincial Engineering and Technological Research Center for Drug Carrier Development, Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering, Jinan University, Guangzhou, China
- MOE Key Laboratory of Tumor Molecular Biology, Jinan University, Guangzhou, China
| | - Wu Zhang
- School of Stomatology of Jinan University, Jinan University, Guangzhou, China
- The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
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12
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Tai L, Wang HJ, Xu XJ, Sun WH, Ju L, Liu WT, Li WQ, Sun J, Chen KM. Pre-harvest sprouting in cereals: genetic and biochemical mechanisms. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:2857-2876. [PMID: 33471899 DOI: 10.1093/jxb/erab024] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 01/18/2021] [Indexed: 05/22/2023]
Abstract
With the growth of the global population and the increasing frequency of natural disasters, crop yields must be steadily increased to enhance human adaptability to risks. Pre-harvest sprouting (PHS), a term mainly used to describe the phenomenon in which grains germinate on the mother plant directly before harvest, is a serious global problem for agricultural production. After domestication, the dormancy level of cultivated crops was generally lower than that of their wild ancestors. Although the shortened dormancy period likely improved the industrial performance of cereals such as wheat, barley, rice, and maize, the excessive germination rate has caused frequent PHS in areas with higher rainfall, resulting in great economic losses. Here, we systematically review the causes of PHS and its consequences, the major indicators and methods for PHS assessment, and emphasize the biological significance of PHS in crop production. Wheat quantitative trait loci functioning in the control of PHS are also comprehensively summarized in a meta-analysis. Finally, we use Arabidopsis as a model plant to develop more complete PHS regulatory networks for wheat. The integration of this information is conducive to the development of custom-made cultivated lines suitable for different demands and regions, and is of great significance for improving crop yields and economic benefits.
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Affiliation(s)
- Li Tai
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Hong-Jin Wang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Xiao-Jing Xu
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Wei-Hang Sun
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Lan Ju
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Wen-Ting Liu
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Wen-Qiang Li
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Jiaqiang Sun
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Kun-Ming Chen
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China
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13
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Neshev NI, Sokolova EM, Kozub GI, Kondrat’eva TA, Sanina NA. Kinetic regularities of NO donation by binuclear dinitrosyl iron complexes with thiolate ligands based on thiophenol derivatives in the presence of red blood cells. Russ Chem Bull 2020. [DOI: 10.1007/s11172-020-2989-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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14
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Cai YM, Webb JS. Optimization of nitric oxide donors for investigating biofilm dispersal response in Pseudomonas aeruginosa clinical isolates. Appl Microbiol Biotechnol 2020; 104:8859-8869. [PMID: 32865612 PMCID: PMC7502453 DOI: 10.1007/s00253-020-10859-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 08/13/2020] [Accepted: 08/23/2020] [Indexed: 02/07/2023]
Abstract
Pseudomonas aeruginosa biofilms contribute heavily to chronic lung infection in cystic fibrosis patients, leading to morbidity and mortality. Nitric oxide (NO) has been shown to disperse P. aeruginosa biofilms in vitro, ex vivo and in clinical trials as a promising anti-biofilm agent. Traditional NO donors such as sodium nitroprusside (SNP) have been extensively employed in different studies. However, the dosage of SNP in different studies was not consistent, ranging from 500 nM to 500 μM. SNP is light sensitive and produces cyanide, which may lead to data misinterpretation and inaccurate predictions of dispersal responses in clinical settings. New NO donors and NO delivery methods have therefore been explored. Here we assessed 7 NO donors using P. aeruginosa PAO1 and determined that SNP and Spermine NONOate (S150) successfully reduced > 60% biomass within 24 and 2 h, respectively. While neither dosage posed toxicity towards bacterial cells, chemiluminescence assays showed that SNP only released NO upon light exposure in M9 media and S150 delivered much higher performance spontaneously. S150 was then tested on 13 different cystic fibrosis P. aeruginosa (CF-PA) isolates; most CF-PA biofilms were significantly dispersed by 250 μM S150. Our work therefore discovered a commercially available NO donor S150, which disperses CF-PA biofilms efficiently within a short period of time and without releasing cyanide, as an alternative of SNP in clinical trials in the future. KEY POINTS: • S150 performs the best in dispersing P. aeruginosa biofilms among 7 NO donors. • SNP only releases NO in the presence of light, while S150 releases NO spontaneously. • S150 successfully disperses biofilms formed by P. aeruginosa cystic fibrosis clinical isolates.
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Affiliation(s)
- Yu-Ming Cai
- Institute for Life Sciences, University of Southampton, Southampton, SO17 1BJ, UK.
| | - Jeremy S Webb
- Institute for Life Sciences, University of Southampton, Southampton, SO17 1BJ, UK
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15
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Hibbard HAJ, Reynolds MM. Enzyme-Activated Nitric Oxide-Releasing Composite Material for Antibacterial Activity Against Escherichia coli. ACS APPLIED BIO MATERIALS 2020; 3:5367-5374. [PMID: 35021711 DOI: 10.1021/acsabm.0c00670] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Bacterial infections occurring on medical devices are incredibly difficult to treat, highlighting the urgency for progress in developing antibiotics and antibacterial materials. This work describes the preparation of an antibacterial prodrug polymer composite material for use as an antibacterial coating for medical devices to prevent infections. Polyvinyl chloride and polyurethane films are prepared containing a bacterial nitroreductase enzyme-activated diazeniumdiolate that releases nitric oxide (NO), a known potent antimicrobial agent. Characterization of the surface of the composite materials by scanning electron microscopy (SEM) and energy-dispersive X-ray analysis (EDS) reveals that the surface of the materials is composed of high amounts of nitrogen due to incorporation of the NO donor compound, up to 13.2% nitrogen on the surface of the 2.5% w/v diazeniumdiolate composite. NO release from the composite films is observed only after metabolism by a bacterial nitroreductase enzyme isolated from E. coli, demonstrating the prodrug nature of the polymer composite materials. Antibacterial efficacy experiments resulted in up to a 66% reduction in E. coli after exposure to the diazeniumdiolate-composite materials. This work details the first illustration of an antibacterial enzyme-activated NO-releasing polymer, a material with potential application as a medical device coating to prevent device-associated infections and improve patient outcomes.
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Affiliation(s)
- Hailey A J Hibbard
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Melissa M Reynolds
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States.,School of Biomedical Engineering, Colorado State University, Fort Collins, Colorado 80523, United States
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16
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Ploetz E, Zimpel A, Cauda V, Bauer D, Lamb DC, Haisch C, Zahler S, Vollmar AM, Wuttke S, Engelke H. Metal-Organic Framework Nanoparticles Induce Pyroptosis in Cells Controlled by the Extracellular pH. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1907267. [PMID: 32182391 DOI: 10.1002/adfm.201909062] [Citation(s) in RCA: 114] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 03/01/2020] [Accepted: 03/02/2020] [Indexed: 05/23/2023]
Abstract
Ion homeostasis is essential for cellular survival, and elevated concentrations of specific ions are used to start distinct forms of programmed cell death. However, investigating the influence of certain ions on cells in a controlled way has been hampered due to the tight regulation of ion import by cells. Here, it is shown that lipid-coated iron-based metal-organic framework nanoparticles are able to deliver and release high amounts of iron ions into cells. While high concentrations of iron often trigger ferroptosis, here, the released iron induces pyroptosis, a form of cell death involving the immune system. The iron release occurs only in slightly acidic extracellular environments restricting cell death to cells in acidic microenvironments and allowing for external control. The release mechanism is based on endocytosis facilitated by the lipid-coating followed by degradation of the nanoparticle in the lysosome via cysteine-mediated reduction, which is enhanced in slightly acidic extracellular environment. Thus, a new functionality of hybrid nanoparticles is demonstrated, which uses their nanoarchitecture to facilitate controlled ion delivery into cells. Based on the selectivity for acidic microenvironments, the described nanoparticles may also be used for immunotherapy: the nanoparticles may directly affect the primary tumor and the induced pyroptosis activates the immune system.
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Affiliation(s)
- Evelyn Ploetz
- Department of Chemistry and Center for NanoScience (CeNS), LMU Munich, Munich, 81377, Germany
- Nanosystems Initiative Munich (NIM), LMU Munich, Munich, 81377, Germany
- Center for Integrated Protein Science Munich (CiPSM), LMU Munich, Munich, 81377, Germany
| | - Andreas Zimpel
- Department of Chemistry and Center for NanoScience (CeNS), LMU Munich, Munich, 81377, Germany
| | - Valentina Cauda
- Department of Applied Science and Technology, Politecnico di Torino, Torino, 10129, Italy
| | - David Bauer
- Department of Chemistry, TU Munich, Munich, 81377, Germany
| | - Don C Lamb
- Department of Chemistry and Center for NanoScience (CeNS), LMU Munich, Munich, 81377, Germany
- Nanosystems Initiative Munich (NIM), LMU Munich, Munich, 81377, Germany
- Center for Integrated Protein Science Munich (CiPSM), LMU Munich, Munich, 81377, Germany
| | | | - Stefan Zahler
- Department of Pharmacy, LMU Munich, Munich, 81377, Germany
| | | | - Stefan Wuttke
- BCMaterials, Basque Center for Materials, UPV/EHU Science Park, Leioa, 48940, Spain
- Ikerbasque, Basque Foundation for Science, Bilbao, 48013, Spain
| | - Hanna Engelke
- Department of Chemistry and Center for NanoScience (CeNS), LMU Munich, Munich, 81377, Germany
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17
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Ishihara S, Iyi N. Controlled release of H 2S and NO gases through CO 2-stimulated anion exchange. Nat Commun 2020; 11:453. [PMID: 31974353 PMCID: PMC6978355 DOI: 10.1038/s41467-019-14270-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 12/26/2019] [Indexed: 12/11/2022] Open
Abstract
Difficulties related to handling gases are a common bottleneck for applications. Although solid materials that release gas molecules under external stimuli exist, they require an external energy or a device for reliable operation. Herein, we report a CO2 stimulus for controlled release of p.p.m.-level functional gases from solid materials. A CO2-preferential anion-exchange property of layered double hydroxides and redox reactions in gas molecules are combined to release various gases (including H2S and NO) under ambient air from HS− and NO2−-incorporated layered double hydroxides, respectively. The profiles of gas release are mainly governed by the difference of pKa between H2CO3 and resulting acids (formed through protonation of interlayer anions), and are not so susceptible to the variation of relative humidity in air. Moreover, structural modulation of solid materials enables fine control of the gas release profiles. The use of safe, ubiquitous, and nearly constant (~400 p.p.m. in atmosphere) CO2 stimulus offers broad applications for functional gases. Solid materials releasing gas molecules under external stimuli usually require external energy for reliable operation. Here the authors synthesize layered double hydroxides for the autonomous release of H2S and NO gases in response to CO2-stimulus.
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Affiliation(s)
- Shinsuke Ishihara
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.
| | - Nobuo Iyi
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.
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18
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Visible light-controlled NO generation for photoreceptor-mediated plant root growth regulation. Nitric Oxide 2019; 92:34-40. [PMID: 31377229 DOI: 10.1016/j.niox.2019.07.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 07/29/2019] [Accepted: 07/31/2019] [Indexed: 01/05/2023]
Abstract
Nitric oxide (NO) is an essential redox-signaling molecule free radical, contributes a significant role in a diverse range of physiological processes. Photo-triggered NO donors have significant potential compared to other NO donors because it releases NO in the presence of light. Hence, an efficient visible light-triggered NO donor is designed and synthesized by coupling 2,6-dimethyl nitrobenzene moiety at the peri-position of 1, 8-naphthalimide. The NO-releasing ability is validated using various spectroscopic techniques, the photoproduct is characterized, and finally, the NO generation quantum yield is also determined. Furthermore, the photo-generated NO has been employed to Arabidopsis thaliana as a model plant to examine the effect of photoreceptor-mediated NO uptake on plant root growth regulation molecule.
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19
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Hibbard HAJ, Reynolds MM. Fluorescent nitric oxide donor for the detection and killing of Pseudomonas aeruginosa. J Mater Chem B 2019; 7:2009-2018. [PMID: 32254805 DOI: 10.1039/c8tb02552e] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The epidemic of multidrug-resistant bacteria calls for the improvement of both detection methods for bacterial infections and methods of treatment. Nitric oxide is a known potent antibacterial agent, but due to its gaseous and highly reactive nature, it is difficult to incorporate into a stable antibacterial compound. In this paper, we synthesize a nitric oxide donor attached to a fluorescent compound, creating a material that can both detect and kill the deadly multi-drug resistant bacteria strain Pseudomonas aeruginosa. Detection occurs through a bacterial enzyme-activated color change, showing a clear and obvious change from blue to yellow under UV light. The synthesized compound spontaneously releases 853 μmol of nitric oxide/g from a 10 mM initial concentration. Antibacterial efficacy studies after exposing Pseudomonas aeruginosa to a 10 mM dose of the synthesized compound show a 55-75% reduction in bacteria after 24 hours. This work is the first instance of a small molecule dual-function material that can both detect and kill bacteria.
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Affiliation(s)
- Hailey A J Hibbard
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA.
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20
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Alimoradi H, Barzegar-Fallah A, Sammut IA, Greish K, Giles GI. Encapsulation of tDodSNO generates a photoactivated nitric oxide releasing nanoparticle for localized control of vasodilation and vascular hyperpermeability. Free Radic Biol Med 2019; 130:297-305. [PMID: 30367997 DOI: 10.1016/j.freeradbiomed.2018.10.433] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 10/07/2018] [Accepted: 10/18/2018] [Indexed: 11/25/2022]
Abstract
We report the synthesis and characterization of a photoactive nitric oxide (NO) releasing nanoparticle (NP) by encapsulation of the NO donor tert-dodecane S-nitrosothiol (tDodSNO) into a co-polymer of styrene and maleic anhydride (SMA) to afford SMA-tDodSNO. Encapsulation did not affect tDodSNO's stability or NO release profile, but imparted water solubility and protection from degradation reactions with glutathione. Under photoactivation the NP acted as a potent NO donor, with photoactivation acting as a switch to induce localized vasodilation in aortic rings (EC50* 660 nM at 2700 W/m2) and cause vascular hyperpermeability in mesenteric beds (8-fold increase in dye uptake at 1 µM SMA-tDodSNO with 460 W/m2 photoactivation). The NP was markedly superior as a photoactive NO donor in comparison to the S-nitrosothiols GSNO and SNAP, which are commonly used in experimental studies, as well as sodium nitroprusside, a clinically used vasodilator. Future development of this NP may find wide ranging therapeutic applications for treating cardiovascular disease and other disorders related to NO signaling, as well as enhancing macromolecular drug delivery to target organs through selective hyperpermeability. Supporting information describing the biophysical characterization of SMA-tDodSNO is supplied in an accompanying Data in Brief article (Alimoradi et al., doi: 10.1016/j.dib.2018.10.149).
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Affiliation(s)
- Houman Alimoradi
- Department of Pharmacology and Toxicology, University of Otago, Dunedin, New Zealand
| | - Anita Barzegar-Fallah
- Department of Pharmacology and Toxicology, University of Otago, Dunedin, New Zealand
| | - Ivan A Sammut
- Department of Pharmacology and Toxicology, University of Otago, Dunedin, New Zealand
| | - Khaled Greish
- College of Medicine and Medical Sciences, Department of Molecular Medicine, Nanomedicine Unit, Princess Al-Jawhara Center for Molecular Medicine and Inherited Disorders, Arabian Gulf University, Manama, Bahrain
| | - Gregory I Giles
- Department of Pharmacology and Toxicology, University of Otago, Dunedin, New Zealand.
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21
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Ong YC, Roy S, Andrews PC, Gasser G. Metal Compounds against Neglected Tropical Diseases. Chem Rev 2018; 119:730-796. [DOI: 10.1021/acs.chemrev.8b00338] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Yih Ching Ong
- Laboratory for Inorganic Chemical Biology, Chimie ParisTech, PSL University, 11 rue Pierre et Marie Curie, F-75005 Paris, France
| | - Saonli Roy
- Department of Chemistry, University of Zurich, Wintherthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Philip C. Andrews
- School of Chemistry, Monash University, Wellington Road, Clayton, Victoria 3800, Australia
| | - Gilles Gasser
- Laboratory for Inorganic Chemical Biology, Chimie ParisTech, PSL University, 11 rue Pierre et Marie Curie, F-75005 Paris, France
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22
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Georgescu E, Oancea A, Georgescu F, Nicolescu A, Oprita EI, Vladulescu L, Vladulescu MC, Oancea F, Shova S, Deleanu C. Schiff bases containing a furoxan moiety as potential nitric oxide donors in plant tissues. PLoS One 2018; 13:e0198121. [PMID: 29990316 PMCID: PMC6038987 DOI: 10.1371/journal.pone.0198121] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 05/14/2018] [Indexed: 01/18/2023] Open
Abstract
Stable Schiff bases containing a furoxan moiety are synthesized as single regioisomers by the reaction of 3-methyl-2-oxy-furazan-4-carbaldehydewith various amino compounds at room temperature. The structures of synthesized compounds were fully characterized by multinuclear NMR spectroscopy and X-ray crystallography. The effect of synthesized Schiff bases containing a furoxan moiety on biological generation of reactive oxygen species and nitric oxide in plant tissues was investigated for the first time by fluorescence microscopy and the released NO identified as nitrite with Griess reagent. There is a good correlation between the biological generation of NO determined by fluorescence microscopy and with Griess reagent. Some of the synthesized compounds exhibited both nitric oxide and reactive oxygen species generation abilities and represent potential NO donors in plant tissues.
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Affiliation(s)
| | - Anca Oancea
- National Institute of Research and Development for Biological Sciences, Bucharest, Romania
| | | | - Alina Nicolescu
- “PetruPoni” Institute of Macromolecular Chemistry, Romanian Academy, Aleea Grigore Ghica Voda, Iasi, Romania
- “C. D. Nenitescu” Centre of Organic Chemistry, Romanian Academy, Bucharest, Romania
| | - Elena Iulia Oprita
- National Institute of Research and Development for Biological Sciences, Bucharest, Romania
| | | | | | - Florin Oancea
- National Research & Development Institute for Chemistry & Petrochemistry – ICECHIM, Bucharest, Romania
| | - Sergiu Shova
- “PetruPoni” Institute of Macromolecular Chemistry, Romanian Academy, Aleea Grigore Ghica Voda, Iasi, Romania
- Institute of Chemistry, Academy of Sciences, Chisinau, Republic of Moldova
| | - Calin Deleanu
- “PetruPoni” Institute of Macromolecular Chemistry, Romanian Academy, Aleea Grigore Ghica Voda, Iasi, Romania
- “C. D. Nenitescu” Centre of Organic Chemistry, Romanian Academy, Bucharest, Romania
- * E-mail:
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23
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Park KH, Kim U, Choi KU, Nam JH, Lee JH, Lee CH, Son JW, Park JS, Shin DG, Won KC, Moon JS, Kim YK, Suh JS. Hemorheologic Alterations in Patients with Type 2 Diabetes Mellitus Presented with an Acute Myocardial Infarction. Diabetes Metab J 2018; 42:155-163. [PMID: 29676545 PMCID: PMC5911519 DOI: 10.4093/dmj.2018.42.2.155] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Accepted: 01/06/2018] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND Hemorheologic indices are known to be related to vascular complications in variable clinical settings. However, little is known about the associations between hemorheologic parameters and acute myocardial infarction (AMI) in type 2 diabetes mellitus (T2DM). The purpose of this study was to demonstrate the changes of hemorheologic environment inside of blood using hemorheologic parameters, especially the elongation index (EI) and critical shear stress (CSS) in diabetics with versus without AMI. METHODS A total of 195 patients with T2DM were enrolled. Patients were divided into the study group with AMI (AMI+, n=77) and control group (AMI-, n=118) who had no history of coronary artery disease. Hemorheologic parameters such as EI and CSS were measured and compared between the two groups. RESULTS The EI was lower (30.44%±1.77% in AMI+ and 31.47%±1.48% in AMI-, P<0.001) but the level of CSS was higher (316.13±108.20 mPa in AMI+ and 286.80±85.34 mPa in AMI-, P=0.040) in the AMI+. The CSS was significantly related to the erythrocyte sedimentation rate (R²=0.497, P<0.001) and use of dipeptidyl peptidase-4 inhibitors (R²=0.574, P=0.048). CONCLUSION Diabetics with AMI resulted in adverse hemorheologic changes with lower EI and higher CSS compared to diabetic subjects without AMI. Evaluation of the hemorheologic parameters may provide valuable supplementary information for managing patients with AMI and T2DM.
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Affiliation(s)
- Kyu Hwan Park
- Department of Internal Medicine, Daegu Veterans Hospital, Daegu, Korea
- Division of Cardiology, Department of Internal Medicine, Yeungnam University Medical Center, Yeungnam University College of Medicine, Daegu, Korea
| | - Ung Kim
- Division of Cardiology, Department of Internal Medicine, Yeungnam University Medical Center, Yeungnam University College of Medicine, Daegu, Korea.
| | - Kang Un Choi
- Division of Cardiology, Department of Internal Medicine, Yeungnam University Medical Center, Yeungnam University College of Medicine, Daegu, Korea
| | - Jong Ho Nam
- Division of Cardiology, Department of Internal Medicine, Yeungnam University Medical Center, Yeungnam University College of Medicine, Daegu, Korea
| | - Jung Hee Lee
- Division of Cardiology, Department of Internal Medicine, Yeungnam University Medical Center, Yeungnam University College of Medicine, Daegu, Korea
| | - Chan Hee Lee
- Division of Cardiology, Department of Internal Medicine, Yeungnam University Medical Center, Yeungnam University College of Medicine, Daegu, Korea
| | - Jang Won Son
- Division of Cardiology, Department of Internal Medicine, Yeungnam University Medical Center, Yeungnam University College of Medicine, Daegu, Korea
| | - Jong Seon Park
- Division of Cardiology, Department of Internal Medicine, Yeungnam University Medical Center, Yeungnam University College of Medicine, Daegu, Korea
| | - Dong Gu Shin
- Division of Cardiology, Department of Internal Medicine, Yeungnam University Medical Center, Yeungnam University College of Medicine, Daegu, Korea
| | - Kyu Chang Won
- Division of Endocrinology, Department of Internal Medicine, Yeungnam University Medical Center, Yeungnam University College of Medicine, Daegu, Korea
| | - Jun Sung Moon
- Division of Endocrinology, Department of Internal Medicine, Yeungnam University Medical Center, Yeungnam University College of Medicine, Daegu, Korea
| | - Yu Kyung Kim
- Department of Chemical Pathology, Yeungnam University Medical Center, Yeungnam University College of Medicine, Daegu, Korea
| | - Jang Soo Suh
- Department of Chemical Pathology, Kyungpook National University Hospital, Kyungpook National University School of Medicine, Daegu, Korea
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Stroppel AS, Paolillo M, Ziegler T, Feil R, Stafforst T. Npom-Protected NONOate Enables Light-Triggered NO/cGMP Signalling in Primary Vascular Smooth Muscle Cells. Chembiochem 2018; 19:1312-1318. [PMID: 29417721 DOI: 10.1002/cbic.201700683] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Indexed: 01/10/2023]
Abstract
Diazeniumdiolates (NONOates) are a class of nitric-oxide-releasing substances widely used in studies of NO/cGMP signalling. Because spatiotemporal control is highly desirable for such purposes, we have synthesised a new Npom-caged pyrrolidine NONOate. A kinetic analysis together with a Griess assay showed the photodependent release of NO with high quantum yield (UV light). In primary vascular smooth muscle cells (VSMCs), our compound was reliably able to induce fast increases in cGMP, as measured with a genetically encoded FRET-based cGMP sensor and further validated by the phosphorylation of the downstream target vasodilator-stimulated phosphoprotein (VASP). Thanks to their facile synthesis, good decaging kinetics and capability to activate cGMP signalling in a fast and efficient manner, Npom-protected NONOates allow for improved spatiotemporal control of NO/cGMP signalling.
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Affiliation(s)
- Anna S Stroppel
- Interfaculty Institute of Biochemistry, University of Tübingen, Auf der Morgenstelle 15, 72076, Tübingen, Germany
| | - Michael Paolillo
- Interfaculty Institute of Biochemistry, University of Tübingen, Hoppe-Seyler-Strasse 4, 72076, Tübingen, Germany
| | - Thomas Ziegler
- Institute of Organic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076, Tübingen, Germany
| | - Robert Feil
- Interfaculty Institute of Biochemistry, University of Tübingen, Hoppe-Seyler-Strasse 4, 72076, Tübingen, Germany
| | - Thorsten Stafforst
- Interfaculty Institute of Biochemistry, University of Tübingen, Auf der Morgenstelle 15, 72076, Tübingen, Germany
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25
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Schmid J, Müller B, Heppeler D, Gaynullina D, Kassmann M, Gagov H, Mladenov M, Gollasch M, Schubert R. The Unexpected Role of Calcium-Activated Potassium Channels: Limitation of NO-Induced Arterial Relaxation. J Am Heart Assoc 2018; 7:e007808. [PMID: 29574460 PMCID: PMC5907584 DOI: 10.1161/jaha.117.007808] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 02/14/2018] [Indexed: 11/24/2022]
Abstract
BACKGROUND Multiple studies have shown that an NO-induced activation of vascular smooth muscle BK channels contributes to the NO-evoked dilation in many blood vessels. In vivo, NO is released continuously. NO attenuates vessel constrictions and, therefore, exerts an anticontractile effect. It is unknown whether the anticontractile effect of continuously present NO is mediated by BK channels. METHODS AND RESULTS This study tested the hypothesis that BK channels mediate the vasodilatory effect of continuously present NO. Experiments were performed on rat and mouse tail and rat saphenous arteries using isometric myography and FURA-2 fluorimetry. Continuously present NO donors, as well as endogenous NO, attenuated methoxamine-induced vasoconstrictions. This effect was augmented in the presence of the BK channel blocker iberiotoxin. Moreover, the contractile effect of iberiotoxin was reduced in the presence of NO donors. The effect of the NO donor sodium nitroprusside was abolished by an NO scavenger and by a guanylyl cyclase inhibitor. In addition, the effect of sodium nitroprusside was reduced considerably by a protein kinase G inhibitor, but was not altered by inhibition of H2S generation. Sodium nitroprusside attenuated the intracellular calcium concentration response to methoxamine. Furthermore, sodium nitroprusside strongly reduced methoxamine-induced calcium influx, which depends entirely on L-type calcium channels. It did not affect methoxamine-induced calcium release. CONCLUSIONS In summary, this study demonstrates the following: (1) continuously present NO evokes a strong anticontractile effect on rat and mouse arteries; (2) the iberiotoxin-induced augmentation of the effect of NO is associated with an NO-induced reduction of the effect of iberiotoxin; and (3) NO evoked a reduction of calcium influx via L-type calcium channels.
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Affiliation(s)
- Johannes Schmid
- Centre for Biomedicine and Medical Technology Mannheim and European Center of Angioscience, Research Division Cardiovascular Physiology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Bettina Müller
- Centre for Biomedicine and Medical Technology Mannheim and European Center of Angioscience, Research Division Cardiovascular Physiology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - David Heppeler
- Centre for Biomedicine and Medical Technology Mannheim and European Center of Angioscience, Research Division Cardiovascular Physiology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Dina Gaynullina
- Centre for Biomedicine and Medical Technology Mannheim and European Center of Angioscience, Research Division Cardiovascular Physiology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
- Faculty of Biology, M.V. Lomonosov, Moscow State University, Moscow, Russia
- Department of Physiology, Russian National Research Medical University, Moscow, Russia
| | - Mario Kassmann
- Experimental and Clinical Research Center, a joint cooperation between the, Charité Medical Faculty and the Max Delbrück Center for Molecular Medicine, Berlin, Germany
| | - Hristo Gagov
- Centre for Biomedicine and Medical Technology Mannheim and European Center of Angioscience, Research Division Cardiovascular Physiology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Mitko Mladenov
- Centre for Biomedicine and Medical Technology Mannheim and European Center of Angioscience, Research Division Cardiovascular Physiology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Maik Gollasch
- Experimental and Clinical Research Center, a joint cooperation between the, Charité Medical Faculty and the Max Delbrück Center for Molecular Medicine, Berlin, Germany
| | - Rudolf Schubert
- Centre for Biomedicine and Medical Technology Mannheim and European Center of Angioscience, Research Division Cardiovascular Physiology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
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26
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Barbati SA, Colussi C, Bacci L, Aiello A, Re A, Stigliano E, Isidori AM, Grassi C, Pontecorvi A, Farsetti A, Gaetano C, Nanni S. Transcription Factor CREM Mediates High Glucose Response in Cardiomyocytes and in a Male Mouse Model of Prolonged Hyperglycemia. Endocrinology 2017; 158:2391-2405. [PMID: 28368536 DOI: 10.1210/en.2016-1960] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 03/16/2017] [Indexed: 01/31/2023]
Abstract
This study aims at investigating the epigenetic landscape of cardiomyocytes exposed to elevated glucose levels. High glucose (30 mM) for 72 hours determined some epigenetic changes in mouse HL-1 and rat differentiated H9C2 cardiomyocytes including upregulation of class I and III histone deacetylase protein levels and activity, inhibition of histone acetylase p300 activity, increase in histone H3 lysine 27 trimethylation, and reduction in H3 lysine 9 acetylation. Gene expression analysis focused on cardiotoxicity revealed that high glucose induced markers associated with tissue damage, fibrosis, and cardiac remodeling such as Nexilin (NEXN), versican, cyclic adenosine 5'-monophosphate-responsive element modulator (CREM), and adrenoceptor α2A (ADRA2). Notably, the transcription factor CREM was found to be important in the regulation of cardiotoxicity-associated genes as assessed by specific small interfering RNA and chromatin immunoprecipitation experiments. In CD1 mice, made hyperglycemic by streptozotoicin (STZ) injection, cardiac structural alterations were evident at 6 months after STZ treatment and were associated with a significant increase of H3 lysine 27 trimethylation and reduction of H3 lysine 9 acetylation. Consistently, NEXN, CREM, and ADRA2 expression was significantly induced at the RNA and protein levels. Confocal microscopy analysis of NEXN localization showed this protein irregularly distributed along the sarcomeres in the heart of hyperglycemic mice. This evidence suggested a structural alteration of cardiac Z-disk with potential consequences on contractility. In conclusion, high glucose may alter the epigenetic landscape of cardiac cells. Sildenafil, restoring guanosine 3', 5'-cyclic monophosphate levels, counteracted the increase of CREM and NEXN, providing a protective effect in the presence of hyperglycemia.
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Affiliation(s)
- Saviana A Barbati
- Institute of Human Physiology, Università Cattolica di Roma, 00168 Rome, Italy
- Institute of Medical Pathology, Università Cattolica di Roma, 00168 Rome, Italy
| | - Claudia Colussi
- Institute of Medical Pathology, Università Cattolica di Roma, 00168 Rome, Italy
- Institute of Cell Biology and Neurobiology, National Research Council, 00143 Rome, Italy
| | - Lorenza Bacci
- Institute of Medical Pathology, Università Cattolica di Roma, 00168 Rome, Italy
| | - Aurora Aiello
- Institute of Medical Pathology, Università Cattolica di Roma, 00168 Rome, Italy
- Institute of Cell Biology and Neurobiology, National Research Council, 00143 Rome, Italy
| | - Agnese Re
- Institute of Cell Biology and Neurobiology, National Research Council, 00143 Rome, Italy
| | - Egidio Stigliano
- Department of Histopathology, Università Cattolica di Roma, 00168 Rome, Italy
| | - Andrea M Isidori
- Department of Experimental Medicine, "Sapienza" University, 00161 Rome, Italy
| | - Claudio Grassi
- Institute of Human Physiology, Università Cattolica di Roma, 00168 Rome, Italy
| | - Alfredo Pontecorvi
- Institute of Medical Pathology, Università Cattolica di Roma, 00168 Rome, Italy
| | - Antonella Farsetti
- Institute of Cell Biology and Neurobiology, National Research Council, 00143 Rome, Italy
- Medicine Clinic III, Goethe University Frankfurt, 60590 Frankfurt am Main, Germany
| | - Carlo Gaetano
- Medicine Clinic III, Division of Cardiovascular Epigenetics, Goethe University Frankfurt, 60590 Frankfurt am Main, Germany
| | - Simona Nanni
- Institute of Medical Pathology, Università Cattolica di Roma, 00168 Rome, Italy
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Aziz HA, Moustafa GAI, Abbas SH, Derayea SM, Abuo-Rahma GEDAA. New norfloxacin/nitric oxide donor hybrids: Synthesis and nitric oxide release measurement using a modified Griess colorimetric method. ACTA ACUST UNITED AC 2017. [DOI: 10.5155/eurjchem.8.2.119-124.1549] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Pinheiro LC, Tanus-Santos JE, Castro MM. The potential of stimulating nitric oxide formation in the treatment of hypertension. Expert Opin Ther Targets 2017; 21:543-556. [PMID: 28338370 DOI: 10.1080/14728222.2017.1310840] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Hypertension is a leading cause of morbidity and mortality worldwide. A major pathophysiological factor contributing to hypertension is reduced nitric oxide (NO) bioavailability. Strategies to address this pathophysiological mechanism could offer significant advantages. Areas covered: In this review we aimed at examining a variety of drugs (statins, beta-adrenergic receptor blockers, calcium channel blockers, angiotensin converting enzyme inhibitors, angiotensin II type-1 receptor blockers) used to treat hypertension and other cardiovascular diseases, particularly with respect to their potential of increasing NO bioavailability and activity in the cardiovascular system. There is now evidence supporting the notion that many cardiovascular drugs activate NO signaling or enhance NO bioavailability as a contributing mechanism to their beneficial cardiovascular effects. Moreover, other drugs may attenuate NO inactivation by superoxide and other reactive oxygen species by exerting antioxidant effects. More recently, the NO oxidation products nitrite and nitrate have been acknowledged as sources of NO after recycling back to NO. Activation of the nitrate-nitrite-NO pathway is an alternate pathway that may generate NO from both anions and exert antihypertensive effects. Expert opinion: In this review, we provide an overview of the possible mechanisms by which these drugs enhance NO bioavailability and help in the therapy of hypertension.
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Affiliation(s)
- Lucas C Pinheiro
- a Department of Pharmacology, Ribeirao Preto Medical School , University of Sao Paulo , Ribeirao Preto , Brazil
| | - Jose E Tanus-Santos
- a Department of Pharmacology, Ribeirao Preto Medical School , University of Sao Paulo , Ribeirao Preto , Brazil
| | - Michele M Castro
- a Department of Pharmacology, Ribeirao Preto Medical School , University of Sao Paulo , Ribeirao Preto , Brazil
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Amabilino S, Tasse M, Lacroix PG, Mallet-Ladeira S, Pimienta V, Akl J, Sasaki I, Malfant I. Photorelease of nitric oxide (NO) on ruthenium nitrosyl complexes with phenyl substituted terpyridines. NEW J CHEM 2017. [DOI: 10.1039/c7nj00866j] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Transandcisisomers of ruthenium nitrosyl complexes release NO upon irradiation by visible light and give a unique photoproduct.
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Affiliation(s)
- Silvia Amabilino
- CNRS
- LCC (Laboratoire de Chimie de Coordination)
- 31077 Toulouse
- France
- Université de Toulouse
| | - Marine Tasse
- CNRS
- LCC (Laboratoire de Chimie de Coordination)
- 31077 Toulouse
- France
- Université de Toulouse
| | - Pascal G. Lacroix
- CNRS
- LCC (Laboratoire de Chimie de Coordination)
- 31077 Toulouse
- France
- Université de Toulouse
| | - Sonia Mallet-Ladeira
- CNRS
- LCC (Laboratoire de Chimie de Coordination)
- 31077 Toulouse
- France
- Université de Toulouse
| | - Véronique Pimienta
- Laboratoire des Interactions Moléculaires et de la Réactivité Chimique et Photochimique
- Université Paul Sabatier de Toulouse
- 31062 Toulouse Cedex 9
- France
| | - Joëlle Akl
- CNRS
- LCC (Laboratoire de Chimie de Coordination)
- 31077 Toulouse
- France
- Université de Toulouse
| | - Isabelle Sasaki
- CNRS
- LCC (Laboratoire de Chimie de Coordination)
- 31077 Toulouse
- France
- Université de Toulouse
| | - Isabelle Malfant
- CNRS
- LCC (Laboratoire de Chimie de Coordination)
- 31077 Toulouse
- France
- Université de Toulouse
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Abstract
Nitric oxide has been implicated in numerous biological processes, particularly those involved with the cardiovascular system. Nitric oxide production is closely regulated and influenced by a number of factors in both health and disease. Nitric oxide is involved in maintaining the vascular system in its healthy, nondiseased state by producing vasorelaxation which enhances blood flow and prevents both leukocyte and platelet adhesion to the vascular wall. Dysfunctional endothelial cell nitric oxide production has been implicated in a number of disease states, including hypertension and atherosclerosis, and has been associated with adverse cardiac events. Various recent therapies may exert their beneficial effects in part by enhancing endothelial nitric oxide bloavallability. Nitric oxide has been used therapeutically in a number of cardiorespiratory disease states. An improved understanding of the pathologic processes underlying these diseases has resulted in several alternative agents being investigated and used clinically.
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Affiliation(s)
- Stuart M. Lowson
- Department of Anesthesiology and Surgical-Trauma ICU Co-Director, University of Virginia, Charlottesville, Virginia
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31
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Huh DN, Czer ET, Cordova KE, Chow WI, Moore CE, Rheingold AL, Daley CJ. Metal nitrosyl chemistry: Interesting oxidation and nitrosylation of a metal-bound ligand framework in a diamido-bis(phosphine) ruthenium(II) complex. Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2016.06.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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32
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Proatherosclerotic Effect of the α1-Subunit of Soluble Guanylyl Cyclase by Promoting Smooth Muscle Phenotypic Switching. THE AMERICAN JOURNAL OF PATHOLOGY 2016; 186:2220-2231. [DOI: 10.1016/j.ajpath.2016.04.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 03/25/2016] [Accepted: 04/19/2016] [Indexed: 12/21/2022]
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Chatterjee D, Sarkar P, Oszajca M, van Eldik R. Formation of [RuIII(edta)(SNO)]2– in RuIII(edta)-Mediated S-Nitrosylation of Bisulfide Ion. Inorg Chem 2016; 55:5037-40. [DOI: 10.1021/acs.inorgchem.6b00615] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Debabrata Chatterjee
- Chemistry and Biomimetics
Group, CSIR-Central Mechanical Engineering Research Institute, M.G.
Avenue, Durgapur 713209, India
| | - Papiya Sarkar
- Chemistry and Biomimetics
Group, CSIR-Central Mechanical Engineering Research Institute, M.G.
Avenue, Durgapur 713209, India
| | - Maria Oszajca
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Krakow, Poland
| | - Rudi van Eldik
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Krakow, Poland
- Department of Chemistry and
Pharmacy, University of Erlangen-Nuremberg, Egerlandstr. 1, 91058 Erlangen, Germany
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34
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Pharmacological characterization of the vasodilating effect induced by the ruthenium complex cis-[Ru(NO)(NO2)(bpy)2].(PF6)2. J Cardiovasc Pharmacol 2016; 65:168-75. [PMID: 25384194 DOI: 10.1097/fjc.0000000000000175] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Nitric oxide (NO) can be found in different species and is a potent vasodilator. The ruthenium compound cis-[Ru(NO)(NO2)(bpy)2].(PF6)2 (BPY) can generate NO. This study aimed to investigate the BPY stability at physiological pH, the cellular mechanisms involved in BPY effect, NO species originating from BPY, and to verify how BPY affects blood pressure. Our results has shown that at pH 7.4 and 9.4, the NO coordinated to ruthenium (Ru-NO) is converted to nitrite (Ru-NO2) and remains stable. In aortic rings, the stable configuration of BPY (Ru-NO2) induces vascular relaxation in a concentration-dependent manner. Thus, further experiments were made with stable configuration of BPY (Ru-NO2). The relaxation induced by BPY was abolished in the presence of guanylyl cyclase inhibitor and decreased in the presence of potassium channel blocker. By using radicalar (NO) and nitroxyl (NO) scavenger, our results suggest that the BPY mainly release the radicalar species. By using fluorescence probes to detect intracellular NO concentration ([NO]i) and cytosolic Ca concentration ([Ca]c), we verified that in smooth muscle cells, BPY induces an increase in [NO]i and a decrease in [Ca]c. The intravenous bolus injection of 1.25, 2.5, and 5.0 mg/kg from stable configuration of BPY results in a decrease on basal blood pressure values. Taken together, our results indicated that the stable configuration of the compound BPY induces vascular relaxation in aorta because of NO release and decrease of [Ca]c in vascular smooth muscle cells. Also, the stable configuration is able to reduce the blood pressure in a dose-dependent manner.
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35
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Tang R, Jiang F, Wen J, Deng Y, Sun Y. Managing bacterial biofilms with chitosan-based polymeric nitric oxides: Inactivation of biofilm bacteria and synergistic effects with antibiotics. J BIOACT COMPAT POL 2016. [DOI: 10.1177/0883911515623798] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
In this study, we developed a new approach in the preparation of chitosan-based polymeric nitric oxides. Chitosan film (unreacted chitosan) reacted with glutaraldehyde to introduce aldehyde groups onto the material surface (glutaraldehyde-treated chitosan). Glutaraldehyde-treated chitosan reacted with a small-molecule nitric oxide donor, 3,3-bis(aminoethyl)-1-hydroxy-2-oxo-1-triazene, to covalently immobilize nitric oxide–releasing moieties onto the polymer (chitosan-based polymeric nitric oxide). Chitosan-based polymeric nitric oxide showed sustained release of nitric oxide. The activation energies and rate constants of nitric oxide release were determined. The released nitric oxide provided potent antimicrobial effects against Gram-positive and Gram-negative bacteria living in biofilms, and the chitosan-based polymeric nitric oxide film showed added/synergistic effects with common antibiotics. At 4°C, the chitosan-based polymeric nitric oxide could be stored for more than 1 month, without significantly losing nitric oxide–releasing capabilities. Furthermore, chitosan-based polymeric nitric oxide showed excellent biocompatibility with mammalian cells, pointing to great potentials of the new materials for a wide range of biomedical applications.
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Affiliation(s)
- Ruogu Tang
- Department of Chemistry, University of Massachusetts Lowell, Lowell, MA, USA
| | - Fuguang Jiang
- Department of Chemistry, University of Massachusetts Lowell, Lowell, MA, USA
| | - Jianchuan Wen
- Department of Chemistry, University of Massachusetts Lowell, Lowell, MA, USA
| | - Ying Deng
- Biomedical Engineering Program, University of South Dakota, Sioux Falls, SD, USA
| | - Yuyu Sun
- Department of Chemistry, University of Massachusetts Lowell, Lowell, MA, USA
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36
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Fernandes AC, Pinto ML, Antunes F, Pires J. Synthetic cobalt clays for the storage and slow release of therapeutic nitric oxide. RSC Adv 2016. [DOI: 10.1039/c6ra05794b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Nitric oxide (NO) is one of the smallest endogenous molecules with particularly interesting aspect roles in biological systems, despite its toxicological potential.
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Affiliation(s)
- Ana C. Fernandes
- Centro de Química e Bioquímica
- Faculdade de Ciências
- Universidade de Lisboa
- 1749-016 Lisboa
- Portugal
| | - Moisés L. Pinto
- CERENA
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
| | - Fernando Antunes
- Centro de Química e Bioquímica
- Faculdade de Ciências
- Universidade de Lisboa
- 1749-016 Lisboa
- Portugal
| | - João Pires
- Centro de Química e Bioquímica
- Faculdade de Ciências
- Universidade de Lisboa
- 1749-016 Lisboa
- Portugal
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38
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Xu GG, Deshpande TM, Ghatge MS, Mehta AY, Omar ASM, Ahmed MH, Venitz J, Abdulmalik O, Zhang Y, Safo MK. Design, Synthesis, and Investigation of Novel Nitric Oxide (NO)-Releasing Prodrugs as Drug Candidates for the Treatment of Ischemic Disorders: Insights into NO-Releasing Prodrug Biotransformation and Hemoglobin-NO Biochemistry. Biochemistry 2015; 54:7178-92. [PMID: 26582149 DOI: 10.1021/acs.biochem.5b01074] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We have developed novel nitric oxide (NO)-releasing prodrugs of efaproxiral (RSR13) for their potential therapeutic applications in a variety of diseases with underlying ischemia. RSR13 is an allosteric effector of hemoglobin (Hb) that decreases the protein's affinity for oxygen, thereby increasing tissue oxygenation. NO, because of its vasodilatory property, in the form of ester prodrugs has been found to be useful in managing several cardiovascular diseases by increasing blood flow and oxygenation in ischemic tissues. We synthesized three NO-donor ester derivatives of RSR13 (DD-1, DD-2, and DD-3) by attaching the NO-releasing moieties nitrooxyethyl, nitrooxypropyl, and 1-(pyrrolidin-1-yl)diazen-1-ium-1,2-diolate, respectively, to the carboxylate of RSR13. In vitro studies demonstrated that the compounds released NO in a time-dependent manner upon being incubated with l-cysteine (1.8-9.3%) or human serum (2.3-52.5%) and also reduced the affinity of Hb for oxygen in whole blood (ΔP50 of 4.9-21.7 mmHg vs ΔP50 of 25.4-32.1 mmHg for RSR13). Crystallographic studies showed RSR13, the hydrolysis product of the reaction between DD-1 and deoxygenated Hb, bound to the central water cavity of Hb. Also, the hydrolysis product, NO, was observed exclusively bound to the two α hemes, the first such HbNO structure to be reported, capturing the previously proposed physiological bis-ligated nitrosylHb species. Finally, nitrate was observed bound to βHis97. Ultraperformance liquid chromatography-mass spectrometry analysis of the compounds incubated with matrices used for the various studies demonstrated the presence of the predicted reaction products. Our findings, beyond the potential therapeutic application, provide valuable insights into the biotransformation of NO-releasing prodrugs and their mechanism of action and into hemoglobin-NO biochemistry at the molecular level.
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Affiliation(s)
| | | | | | | | - Abdel Sattar M Omar
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, King Abdulaziz University , Alsulaymanyah, Jeddah 21589, Saudi Arabia.,Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Al-Azhar University , Cairo 11884, Egypt
| | | | | | - Osheiza Abdulmalik
- Division of Hematology, The Children's Hospital of Philadelphia , Philadelphia, Pennsylvania 19104, United States
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39
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Shu X, Keller TCS, Begandt D, Butcher JT, Biwer L, Keller AS, Columbus L, Isakson BE. Endothelial nitric oxide synthase in the microcirculation. Cell Mol Life Sci 2015; 72:4561-75. [PMID: 26390975 PMCID: PMC4628887 DOI: 10.1007/s00018-015-2021-0] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Revised: 07/21/2015] [Accepted: 08/11/2015] [Indexed: 02/07/2023]
Abstract
Endothelial nitric oxide synthase (eNOS, NOS3) is responsible for producing nitric oxide (NO)--a key molecule that can directly (or indirectly) act as a vasodilator and anti-inflammatory mediator. In this review, we examine the structural effects of regulation of the eNOS enzyme, including post-translational modifications and subcellular localization. After production, NO diffuses to surrounding cells with a variety of effects. We focus on the physiological role of NO and NO-derived molecules, including microvascular effects on vessel tone and immune response. Regulation of eNOS and NO action is complicated; we address endogenous and exogenous mechanisms of NO regulation with a discussion of pharmacological agents used in clinical and laboratory settings and a proposed role for eNOS in circulating red blood cells.
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Affiliation(s)
- Xiaohong Shu
- College of Pharmacy, Dalian Medical University, Dalian, 116044, China
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, P.O. Box 801394, Charlottesville, VA, 22908, USA
| | - T C Stevenson Keller
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, P.O. Box 801394, Charlottesville, VA, 22908, USA
- Department of Molecular Physiology and Biophysics, University of Virginia School of Medicine, Charlottesville, USA
| | - Daniela Begandt
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, P.O. Box 801394, Charlottesville, VA, 22908, USA
| | - Joshua T Butcher
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, P.O. Box 801394, Charlottesville, VA, 22908, USA
| | - Lauren Biwer
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, P.O. Box 801394, Charlottesville, VA, 22908, USA
- Department of Molecular Physiology and Biophysics, University of Virginia School of Medicine, Charlottesville, USA
| | - Alexander S Keller
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, P.O. Box 801394, Charlottesville, VA, 22908, USA
- Department of Pharmacology, University of Virginia School of Medicine, Charlottesville, USA
| | - Linda Columbus
- Department of Chemistry, University of Virginia, Charlottesville, USA
| | - Brant E Isakson
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, P.O. Box 801394, Charlottesville, VA, 22908, USA.
- Department of Molecular Physiology and Biophysics, University of Virginia School of Medicine, Charlottesville, USA.
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Mendes-Júnior LDG, Guimarães DD, Gadelha DDA, Diniz TF, Brandão MCR, Athayde-Filho PF, Lemos VS, França-Silva MDS, Braga VA. The new nitric oxide donor cyclohexane nitrate induces vasorelaxation, hypotension, and antihypertensive effects via NO/cGMP/PKG pathway. Front Physiol 2015; 6:243. [PMID: 26379557 PMCID: PMC4553900 DOI: 10.3389/fphys.2015.00243] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Accepted: 08/13/2015] [Indexed: 12/19/2022] Open
Abstract
We investigated the cardiovascular effects induced by the nitric oxide donor Cyclohexane Nitrate (HEX). Vasodilatation, NO release and the effects of acute or sub-chronic treatment with HEX on cardiovascular parameters were evaluated. HEX induced endothelium-independent vasodilatation (Maximum effect [efficacy, ME] = 100.4 ± 4.1%; potency [pD2] = 5.1 ± 0.1). Relaxation was attenuated by scavenging nitric oxide (ME = 44.9 ± 9.4% vs. 100.4 ± 4.1%) or by inhibiting the soluble guanylyl cyclase (ME = 38.5 ± 9.7% vs. 100.4 ± 4.1%). In addition, pD2 was decreased after non-selective blockade of K+ channels (pD2 = 3.6 ± 0.1 vs. 5.1 ± 0.1) or by inhibiting KATP channels (pD2 = 4.3 ± 0.1 vs. 5.1 ± 0.1). HEX increased NO levels in mesenteric arteries (33.2 ± 2.3 vs. 10.7 ± 0.2 au, p < 0.0001). Intravenous acute administration of HEX (1–20 mg/kg) induced hypotension and bradycardia in normotensive and hypertensive rats. Furthermore, starting at 6 weeks after the induction of 2K1C hypertension, oral treatment with the HEX (10 mg/Kg/day) for 7 days reduced blood pressure in hypertensive animals (134 ± 6 vs. 170 ± 4 mmHg, respectively). Our data demonstrate that HEX is a NO donor able to produce vasodilatation via NO/cGMP/PKG pathway and activation of the ATP-sensitive K+ channels. Furthermore, HEX acutely reduces blood pressure and heart rate as well as produces antihypertensive effect in renovascular hypertensive rats.
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Affiliation(s)
| | | | | | - Thiago F Diniz
- Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais Belo Horizonte, Brazil
| | - Maria C R Brandão
- Department of Chemistry, Federal University of Paraíba João Pessoa, Brazil
| | | | - Virginia S Lemos
- Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais Belo Horizonte, Brazil
| | | | - Valdir A Braga
- Biotechnology Center, Federal University of Paraíba João Pessoa, Brazil
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41
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Wang X, Wei J, Pan L, Shi Y, Lin H, Gong H. The Role of CD36 in the Effect of Arginine in Atherosclerotic Rats. Med Sci Monit 2015; 21:1494-9. [PMID: 26003171 PMCID: PMC4453757 DOI: 10.12659/msm.893388] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Background The aim of this study was to investigate the effects of arginine in the development of atherosclerosis in rats fed a high-fat diet supplemented with arginine and to evaluate the role of CD36 in this process. Material/Methods A total of 40 Sprague-Dawley rats were randomly assigned to 4 groups: control group, fat diet group, simvastatin group, and arginine group. They were fed for 12 weeks and were then sacrificed. Immunohistochemical CD36 expression and pathology was investigated in the aorta; CD36 expression in mononuclear cells was detected by Western blot and RT-PCR. Results The thickness of the aortal intima, media, and I/M significantly decreased in the arginine group rats compared with those in the fat diet group (P<0.05). CD36 expression was up-regulated in rats in the fat diet group compared with the control group and was down-regulated in rats in the arginine group compared with rats in the fat diet group. Conclusions The addition of arginine has a significant effect on reducing rat atherosclerosis development, which may be attributed to both the down-regulation of CD36 expression in rat aortic endothelial and blood mononuclear cells and the NO pathway.
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Affiliation(s)
- Xin Wang
- Division of Cardiology, Department of Medicine, Jinshan Hospital, Fudan University, Shanghai, China (mainland)
| | - Jianming Wei
- Division of Cardiology, Department of Medicine, Jinshan Hospital, Fudan University, Shanghai, China (mainland)
| | - Lijian Pan
- Division of Cardiology, Department of Medicine, Jinshan Hospital, Fudan University, Shanghai, China (mainland)
| | - Yijun Shi
- Division of Cardiology, Department of Medicine, Jinshan Hospital, Fudan University, Shanghai, China (mainland)
| | - Haihong Lin
- Division of Cardiology, Department of Medicine, Jinshan Hospital, Fudan University, Shanghai, China (mainland)
| | - Hui Gong
- Division of Cardiology, Department of Medicine, Jinshan Hospital, Fudan University, Shanghai, China (mainland)
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42
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Fernandes AC, Pinto ML, Antunes F, Pires J. l-Histidine-based organoclays for the storage and release of therapeutic nitric oxide. J Mater Chem B 2015; 3:3556-3563. [PMID: 32262240 DOI: 10.1039/c4tb01913j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Despite its toxicity, in low concentrations, nitric oxide (NO) is a small endogenous molecule with a particularly important role in the regulation of several biochemical pathways of the human body. The potential of l-histidine-modified clays (organoclays) for storage and therapeutic release of nitric oxide was assessed. Materials were characterized by powder X-ray diffraction, TG-DSC, IR spectroscopy, and nitrogen adsorption at -196 °C. The NO storage and release kinetics was studied both in the gas and liquid phases. For some materials, improvement was observed for both the released amounts and the release profile for the organoclays in relation to the respective raw clays. Assays with HeLa cells indicated that the materials have low cytotoxicity.
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Affiliation(s)
- Ana C Fernandes
- Centro de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal.
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Liu J, Duan Q, Wang J, Song Z, Qiao X, Wang H. Photocontrolled nitric oxide release from two nitrosylruthenium isomer complexes and their potential biomedical applications. JOURNAL OF BIOMEDICAL OPTICS 2015; 20:015004. [PMID: 25621873 DOI: 10.1117/1.jbo.20.1.015004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Accepted: 12/17/2014] [Indexed: 06/04/2023]
Abstract
Nitric oxide (NO) has key regulatory roles in various biological and medical processes. The control of its local concentration, which is crucial for obtaining the desired effect, can be achieved with exogenous NO donors. Release of NO from metal-nitrosyl complexes upon exposure to light is a strategy that could allow for the site-specific delivery of the reactive species NO to physiological targets. The photodissociation of NO from two nitrosylruthenium(II) isomer complexes {cis- and trans-[Ru(OAc)(2mqn)(2)NO]} was demonstrated by matrix-assisted laser desorption ionization time-of-flight mass spectrometry spectra, and electron paramagnetic resonance spectra further prove the photoinduced NO release by spin trapping of NO free radicals upon photoirradiation. Real-time NO release was quantitatively measured by electrochemistry with an NO-specific electrode. The quantitative control of NO release from [Ru(OAc)(2mqn)(2)NO] in aqueous solutions was done by photoirradiation at different wavelengths. Both isomers show photoinduced damage on plasmid DNA, but the trans isomer has higher cytotoxicity and photocytotoxicity activity against the HeLa tumor cell line than that of the cis isomer. Nitrosylruthenium(II) complex, with 8-quinolinol derivatives as ligands, has a great potential as a photoactivated NO donor reagent for biomedical applications.
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Affiliation(s)
- Jiao Liu
- Shanxi University, Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, 92 Wucheng Road, Taiyuan 030006, China
| | - Qingqing Duan
- Shanxi University, Institute of Opto-Electronics, State Key Lab of Quantum Optics and Quantum Optics Devices, 92 Wucheng Road, Taiyuan 030006, China
| | - Jianru Wang
- Shanxi University, Institute of Opto-Electronics, State Key Lab of Quantum Optics and Quantum Optics Devices, 92 Wucheng Road, Taiyuan 030006, ChinacShanxi Medical University, Institute of Basic Medicine, 56 Xinjiannan Road, Taiyuan 030012, China
| | - Zhen Song
- Shanxi University, Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, 92 Wucheng Road, Taiyuan 030006, China
| | - Xiaoyan Qiao
- Shanxi University, College of Physics & Electronics Engineering, 92 Wucheng Road, Taiyuan 030006, China
| | - Hongfei Wang
- Shanxi University, Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, 92 Wucheng Road, Taiyuan 030006, ChinabShanxi University, Institute of Opto-Electronics, State Key Lab of Quantum Op
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Montó F, Arce C, Noguera MA, Ivorra MD, Flanagan J, Roller M, Issaly N, D'Ocon P. Action of an extract from the seeds of Fraxinus excelsior L. on metabolic disorders in hypertensive and obese animal models. Food Funct 2014; 5:786-96. [PMID: 24573510 DOI: 10.1039/c3fo60539f] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nuzhenide and GI3, the principal secoiridoids of an extract obtained from the seeds of Fraxinus excelsior L. (FXE), are believed to be the active compounds responsible for the previously reported hypoglycemic effects of this extract. In this study, the effects of FXE were studied in two animal models which are representative of metabolic disorders: spontaneously hypertensive rats (SHR) and obese Zucker rats. SHR were acutely treated (oral gavage) with different doses of FXE. In addition, SHR and Zucker rats were chronically fed (20 or 5 weeks, respectively) with standard chow supplemented with FXE. Acute treatment with FXE (200 mg per kg body weight) decreased systolic blood pressure as in the case with captopril (50 mg per kg body weight). Chronic treatment with FXE at 100 mg per kg body weight per day, a dose equivalent to that showing hypoglycemic activity in humans, resulted in a significant decrease in glycemia (-16.3%), triglyceridemia (-33.4%) and body weight (-8.1%) in Zucker rats as well as a significant decrease in SBP in SHR (-6.7%), with a concomitant improvement in endothelial function in both strains. The broad-ranging effects of FXE may be due to a unique compositional profile that could be useful to prevent the metabolic syndrome, characterized by obesity, insulin resistance, glucose intolerance, hypertriglyceridemia and elevated blood pressure.
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Affiliation(s)
- Fermí Montó
- Departamento de Farmacología, Facultat de Farmàcia, Universitat de València, Avda. Vicent Andrés Estelles s/n, Burjassot, 46100 Valencia, Spain.
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Genetic dissection of the vav2-rac1 signaling axis in vascular smooth muscle cells. Mol Cell Biol 2014; 34:4404-19. [PMID: 25288640 DOI: 10.1128/mcb.01066-14] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Vascular smooth muscle cells (vSMCs) are key in the regulation of blood pressure and the engagement of vascular pathologies, such as hypertension, arterial remodeling, and neointima formation. The role of the Rac1 GTPase in these cells remains poorly characterized. To clarify this issue, we have utilized genetically engineered mice to manipulate the signaling output of Rac1 in these cells at will using inducible, Cre-loxP-mediated DNA recombination techniques. Here, we show that the expression of an active version of the Rac1 activator Vav2 exclusively in vSMCs leads to hypotension as well as the elimination of the hypertension induced by the systemic loss of wild-type Vav2. Conversely, the specific depletion of Rac1 in vSMCs causes defective nitric oxide vasodilation responses and hypertension. Rac1, but not Vav2, also is important for neointima formation but not for hypertension-driven vascular remodeling. These animals also have allowed us to dismiss etiological connections between hypertension and metabolic disease and, most importantly, identify pathophysiological programs that cooperate in the development and consolidation of hypertensive states caused by local vascular tone dysfunctions. Finally, our results suggest that the therapeutic inhibition of Rac1 will be associated with extensive cardiovascular system-related side effects and identify pharmacological avenues to circumvent them.
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Machado NT, Maciel PM, Alustau MC, Queiroz TM, Furtado FF, Assis VL, Veras RC, Araújo IG, Athayde-Filho PF, Medeiros IA. Nitric oxide as a target for the hypotensive and vasorelaxing effects induced by (Z)-ethyl 12-nitrooxy-octadec-9-enoate in rats. Eur J Pharm Sci 2014; 62:317-25. [DOI: 10.1016/j.ejps.2014.06.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Revised: 04/16/2014] [Accepted: 06/13/2014] [Indexed: 10/25/2022]
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Chatterjee D, Shome S, Jaiswal N, Banerjee P. Nitrite reduction mediated by the complex RuIII(EDTA). Dalton Trans 2014; 43:13596-600. [DOI: 10.1039/c4dt01447b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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48
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Jasińska-Stroschein M, Orszulak-Michalak D. The current approach into signaling pathways in pulmonary arterial hypertension and their implication in novel therapeutic strategies. Pharmacol Rep 2014; 66:552-64. [PMID: 24948054 DOI: 10.1016/j.pharep.2014.04.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Revised: 04/02/2014] [Accepted: 04/07/2014] [Indexed: 02/01/2023]
Abstract
Many mediators and signaling pathways, with their downstream effectors, have been implicated in the pathogenesis of pulmonary hypertension. Currently approved drugs, representing an option of specific therapy, target NO, prostacyclin or ET-1 pathways and provide a significant improvement in the symptomatic status of patients and a slower rate of clinical deterioration. However, despite such improvements in the treatment, PAH remains a chronic disease without a cure, the mortality associated with PAH remains high and effective therapeutic regimens are still required. Knowledge about the role of the pathways involved in PAH and their interactions provides a better understanding of the pathogenesis of the disease and may highlight directions for novel therapeutic strategies for PAH. This paper reviews some novel, promising PAH-associated signaling pathways, such as RAAS, RhoA/ROCK, PDGF, PPAR, and TGF, focusing also on their possible interactions with well-established ones such as NO, ET-1 and prostacyclin pathways.
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Chou HC, Chiu SJ, Liu YL, Hu TM. Direct formation of S-nitroso silica nanoparticles from a single silica source. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:812-822. [PMID: 24410024 DOI: 10.1021/la4048215] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Nitric oxide (NO) is a ubiquitous molecule in the body. Because of its multiple pathophysiologic roles, the potential for treating various diseases by the exogenous administration of NO has been under intensive investigation. However, the unstable, radical nature of NO poses a major challenge to the effective delivery of NO. Previously, silica nanoparticles synthesized by the traditional method have been developed into NO-carrying systems. In the present study, for the first time NO-carrying silica nanoparticles were prepared from a single silica precursor using a simple nanoprecipitation method. (3-Mercaptopropyl)-trimethoxysilane (MPTMS) was used as the sole silane source, which was subjected to acid-catalyzed S-nitrosation and condensation reactions in a one-pot organic phase. S-Nitroso silica nanoparticles (SNO-SiNPs) were then produced by injecting a smaller quantity of the organic phase into a larger amount of water without surfactants. Various preparation parameters were tested to obtain optimized conditions. Moreover, a phase diagram demonstrating the ouzo effect was constructed. The prepared SNO-SiNPs were spherical particles with a tunable size in the range of 100-400 nm. The nanoparticles in aqueous dispersions exhibited high colloid stability, possibly resulting from highly negatively charged surfaces. The result of solid-state (29)Si NMR shows the predominance of T(2) and T(3) silicon structures, suggesting that nanoparticles were formed from polycondensed silica species. In conclusion, NO-loaded silica nanoparticles have been directly prepared from a single silane precursor using a surfactant-free, low-energy, one-step nanoprecipitation approach. The method precludes the need for the initial formation of bare particles and subsequent functionalization steps.
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Affiliation(s)
- Hung-Chang Chou
- School of Pharmacy, National Defense Medical Center , Taipei 11490, Taiwan, ROC
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50
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Priya S, Nithya R, Berchmans S. S-nitrosothiol tethered polymer hexagons: synthesis, characterisation and antibacterial effect. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2014; 25:1-10. [PMID: 23996380 DOI: 10.1007/s10856-013-5032-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Accepted: 08/12/2013] [Indexed: 06/02/2023]
Abstract
In this work, we portray a new controlled nitric oxide (NO) delivery platform by grafting S-nitrosothiol derived from cysteine into the polymeric backbone of poly(vinyl methyl ether-co-maleic anhydride). Nitrosothiols (RSNO's) are linked to the polymeric backbone through solvent displacement method. By adjusting solvent polarity, materials of different shapes and sizes varying between μm and nm are prepared. More often our method of preparation resulted in hexagonally shaped polymeric materials. The structure and RSNO conjugation analysis was investigated using scanning electron microscopy (SEM), FT-IR, UV-Vis spectroscopy and thermogravimetric analysis (TGA). Bactericidal efficacy of nitric oxide releasing polymer hexagons, a novel antibacterial agent is demonstrated against Escherichia coli, Staphylococcus aureus and Pseudomonas aeruginosa. Confocal microscopic studies revealed the enhanced bactericidal effect of polymer hexagons via membrane destruction. Results suggest that this biocompatible NO releasing RSNO conjugated polymer hexagons could be potentially useful for antimicrobial applications.
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Affiliation(s)
- S Priya
- Electrodics and Electrocatalysis Division, Central Electrochemical Research Institute, Karaikudi, 630006, Tamil Nadu, India,
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