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Glukhova XA, Trizna JA, Melnik BS, Proussakova OV, Beletsky IP. Recruitment of TNF ligands to lipid rafts is mediated by their physical association with caveolin-1. FEBS Lett 2022; 596:211-218. [PMID: 34897688 DOI: 10.1002/1873-3468.14257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 10/29/2021] [Indexed: 11/08/2022]
Abstract
Activities of the tumour necrosis factor (TNF) family members are associated with their targeting to lipid rafts, specialised regions of the plasma membrane. Herein, we investigated the physical association of TNF and its family members cluster of differentiation 40 ligand (CD40L) and tumour necrosis factor-related apoptosis-inducing ligand with caveolin-1, a lipid raft resident protein. We discovered that the intracellular domains of TNF and CD40L interact with caveolin-1, and the membrane proximal region of TNF is required for the binding of caveolin-1 domains. Full-length TNF can form a complex with caveolin-1 in membrane rafts of HeLa cells, and caveolin-1 knockdown leads to impaired TNF transport to rafts. These findings provide the first evidence of a direct interaction between TNF, CD40L and caveolin-1 and suggest that caveolin-1 may be responsible for recruiting TNF to lipid rafts.
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Affiliation(s)
- Xenia A Glukhova
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Puschino, Russia
| | - Julia A Trizna
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Puschino, Russia
| | - Bogdan S Melnik
- Institute of Protein Research, Russian Academy of Sciences, Puschino, Russia
| | - Olga V Proussakova
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Puschino, Russia
| | - Igor P Beletsky
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Puschino, Russia
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2
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Santos JD, Paulo M, Vercesi JA, Bendhack LM. Thromboxane-prostanoid receptor activation blocks ATP-sensitive potassium channels in rat aortas. Clin Exp Pharmacol Physiol 2021; 48:1537-1546. [PMID: 34329487 DOI: 10.1111/1440-1681.13557] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 07/23/2021] [Accepted: 07/27/2021] [Indexed: 11/30/2022]
Abstract
K+ channel activation is one of the major mechanisms involved in vasodilation. Vasoconstrictor agonists such as angiotensin II promote ATP-dependent potassium channels (KATP ) dysfunction. This study evaluates whether thromboxane-prostanoid (TP receptor) activation by the agonist U46619 increases reactive oxygen species (ROS) production in rat aortas, which could contribute to KATP channel dysfunction and impaired NO-dependent vasodilation. TP receptor activation with the selective agonist U46619 increased ROS in endothelial cells (ECs) and vascular smooth muscle cells (VSMCs), but the TP receptor antagonist SQ29548 abolished this effect. ECs and VSMCs incubation with ROS scavengers like Tiron or PEG-Catalase impaired U46619-induced ROS production. U46619 at the concentrations of 0.1 and 1 µmol/L induced contractions with similar amplitude. KATP channel activation with pinacidil-induced relaxation was lower for the contractions induced with 0.1 or 1 µmol/L U46619 than with 10 nmol/L U46619. Acetylcholine-induced relaxation provided similar results. In aortas pre-contracted with 10 nmol/L U46619, neither Tiron (100 µmol/L) nor catalase (300 U/mL) affected pinacidil-induced relaxation. However, in aortas pre-contracted with 0.1 µmol/L U46619, catalase potentiated pinacidil-induced relaxation. Pinacidil potentiated acetylcholine-induced relaxation in aortas pre-contracted with 0.1 and 1 µmol/L U46619. Incubation with 10 nmol/L U46619 increased NO concentration in ECs. Taken together, these results show that high concentrations of the TP receptor agonist U46619 impair KATP channels, which is probably due to ROS production. It is likely that hydrogen peroxide is the ROS.
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MESH Headings
- Animals
- Rats
- KATP Channels/metabolism
- KATP Channels/agonists
- 15-Hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic Acid/pharmacology
- Receptors, Thromboxane/metabolism
- Receptors, Thromboxane/agonists
- Receptors, Thromboxane/antagonists & inhibitors
- Reactive Oxygen Species/metabolism
- Male
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/metabolism
- Vasodilation/drug effects
- Aorta/drug effects
- Aorta/metabolism
- Rats, Wistar
- Myocytes, Smooth Muscle/drug effects
- Myocytes, Smooth Muscle/metabolism
- Vasoconstrictor Agents/pharmacology
- Endothelial Cells/drug effects
- Endothelial Cells/metabolism
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Affiliation(s)
- Jeimison D Santos
- Department of Pharmacology, School of Medicine of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Michele Paulo
- Faculty of Pharmaceutical Sciences of Ribeirão Preto, Department of Physics and Chemistry, University of São Paulo, São Paulo, Brazil
| | - Juliana A Vercesi
- Faculty of Pharmaceutical Sciences of Ribeirão Preto, Department of Physics and Chemistry, University of São Paulo, São Paulo, Brazil
| | - Lusiane M Bendhack
- Faculty of Pharmaceutical Sciences of Ribeirão Preto, Department of Physics and Chemistry, University of São Paulo, São Paulo, Brazil
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3
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da Silva GM, da Silva MC, Nascimento DVG, Lima Silva EM, Gouvêa FFF, de França Lopes LG, Araújo AV, Ferraz Pereira KN, de Queiroz TM. Nitric Oxide as a Central Molecule in Hypertension: Focus on the Vasorelaxant Activity of New Nitric Oxide Donors. BIOLOGY 2021; 10:biology10101041. [PMID: 34681140 PMCID: PMC8533285 DOI: 10.3390/biology10101041] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 10/08/2021] [Accepted: 10/09/2021] [Indexed: 12/15/2022]
Abstract
Cardiovascular diseases include all types of disorders related to the heart or blood vessels. High blood pressure is an important risk factor for cardiac complications and pathological disorders. An increase in circulating angiotensin-II is a potent stimulus for the expression of reactive oxygen species and pro-inflammatory cytokines that activate oxidative stress, perpetuating a deleterious effect in hypertension. Studies demonstrate the capacity of NO to prevent platelet or leukocyte activation and adhesion and inhibition of proliferation, as well as to modulate inflammatory or anti-inflammatory reactions and migration of vascular smooth muscle cells. However, in conditions of low availability of NO, such as during hypertension, these processes are impaired. Currently, there is great interest in the development of compounds capable of releasing NO in a modulated and stable way. Accordingly, compounds containing metal ions coupled to NO are being investigated and are widely recognized as having great relevance in the treatment of different diseases. Therefore, the exogenous administration of NO is an attractive and pharmacological alternative in the study and treatment of hypertension. The present review summarizes the role of nitric oxide in hypertension, focusing on the role of new NO donors, particularly the metal-based drugs and their protagonist activity in vascular function.
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Affiliation(s)
- Gabriela Maria da Silva
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Federal University of Pernambuco, Vitória de Santo Antão 55.608-680, PE, Brazil; (G.M.d.S.); (M.C.d.S.); (D.V.G.N.); (E.M.L.S.); (A.V.A.); (K.N.F.P.)
| | - Mirelly Cunha da Silva
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Federal University of Pernambuco, Vitória de Santo Antão 55.608-680, PE, Brazil; (G.M.d.S.); (M.C.d.S.); (D.V.G.N.); (E.M.L.S.); (A.V.A.); (K.N.F.P.)
| | - Déborah Victória Gomes Nascimento
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Federal University of Pernambuco, Vitória de Santo Antão 55.608-680, PE, Brazil; (G.M.d.S.); (M.C.d.S.); (D.V.G.N.); (E.M.L.S.); (A.V.A.); (K.N.F.P.)
| | - Ellen Mayara Lima Silva
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Federal University of Pernambuco, Vitória de Santo Antão 55.608-680, PE, Brazil; (G.M.d.S.); (M.C.d.S.); (D.V.G.N.); (E.M.L.S.); (A.V.A.); (K.N.F.P.)
| | - Fabíola Furtado Fialho Gouvêa
- School of Technical Health, Health Sciences Center, Federal University of Paraíba, João Pessoa 58.051-900, PB, Brazil;
| | - Luiz Gonzaga de França Lopes
- Laboratory of Bioinorganic Chemistry, Department of Organic and Inorganic Chemistry, Federal University of Ceará, Fortaleza 60.020-181, CE, Brazil;
| | - Alice Valença Araújo
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Federal University of Pernambuco, Vitória de Santo Antão 55.608-680, PE, Brazil; (G.M.d.S.); (M.C.d.S.); (D.V.G.N.); (E.M.L.S.); (A.V.A.); (K.N.F.P.)
| | - Kelli Nogueira Ferraz Pereira
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Federal University of Pernambuco, Vitória de Santo Antão 55.608-680, PE, Brazil; (G.M.d.S.); (M.C.d.S.); (D.V.G.N.); (E.M.L.S.); (A.V.A.); (K.N.F.P.)
| | - Thyago Moreira de Queiroz
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Federal University of Pernambuco, Vitória de Santo Antão 55.608-680, PE, Brazil; (G.M.d.S.); (M.C.d.S.); (D.V.G.N.); (E.M.L.S.); (A.V.A.); (K.N.F.P.)
- Correspondence:
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4
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Ning DS, Ma J, Peng YM, Li Y, Chen YT, Li SX, Liu Z, Li YQ, Zhang YX, Jian YP, Ou ZJ, Ou JS. Apolipoprotein A-I mimetic peptide inhibits atherosclerosis by increasing tetrahydrobiopterin via regulation of GTP-cyclohydrolase 1 and reducing uncoupled endothelial nitric oxide synthase activity. Atherosclerosis 2021; 328:83-91. [PMID: 34118596 DOI: 10.1016/j.atherosclerosis.2021.05.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 05/20/2021] [Accepted: 05/27/2021] [Indexed: 02/03/2023]
Abstract
BACKGROUND AND AIMS The apolipoprotein A-I mimetic peptide D-4F, among its anti-atherosclerotic effects, improves vasodilation through mechanisms not fully elucidated yet. METHODS Low-density lipoprotein (LDL) receptor null (LDLr-/-) mice were fed Western diet with or without D-4F. We then measured atherosclerotic lesion formation, endothelial nitric oxide synthase (eNOS) phosphorylation and its association with heat shock protein 90 (HSP90), nitric oxide (NO) and superoxide anion (O2•-) production, and tetrahydrobiopterin (BH4) and GTP-cyclohydrolase 1 (GCH-1) concentration in the aorta. Human umbilical vein endothelial cells (HUVECs) and aortas were treated with oxidized LDL (oxLDL) with or without D-4F; subsequently, BH4 and GCH-1 concentration, NO and O2•- production, eNOS association with HSP90, and endothelium-dependent vasodilation were measured. RESULTS Unexpectedly, eNOS phosphorylation, eNOS-HSP90 association, and O2•- production were increased, whereas BH4 and GCH-1 concentration and NO production were reduced in atherosclerosis. D-4F significantly inhibited atherosclerosis, eNOS phosphorylation, eNOS-HSP90 association, and O2•- generation but increased NO production and BH4 and GCH-1 concentration. OxLDL reduced NO production and BH4 and GCH-1 concentration but enhanced O2•- generation and eNOS association with HSP90, and impaired endothelium-dependent vasodilation. D-4F inhibited the overall effects of oxLDL. CONCLUSIONS Hypercholesterolemia enhanced uncoupled eNOS activity by decreasing GCH-1 concentration, thereby reducing BH4 levels. D-4F reduced uncoupled eNOS activity by increasing BH4 levels through GCH-1 expression and decreasing eNOS phosphorylation and eNOS-HSP90 association. Our findings elucidate a novel mechanism by which hypercholesterolemia induces atherosclerosis and D-4F inhibits it, providing a potential therapeutic approach.
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Affiliation(s)
- Da-Sheng Ning
- Division of Cardiac Surgery, Heart Center, The First Affiliated Hospital, Sun Yat-sen University, PR China; National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, PR China; NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, PR China; Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, PR China
| | - Jian Ma
- Division of Cardiac Surgery, Heart Center, The First Affiliated Hospital, Sun Yat-sen University, PR China; National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, PR China; NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, PR China; Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, PR China
| | - Yue-Ming Peng
- Division of Cardiac Surgery, Heart Center, The First Affiliated Hospital, Sun Yat-sen University, PR China; National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, PR China; NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, PR China; Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, PR China
| | - Yan Li
- Division of Cardiac Surgery, Heart Center, The First Affiliated Hospital, Sun Yat-sen University, PR China; National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, PR China; NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, PR China; Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, PR China
| | - Ya-Ting Chen
- Division of Cardiac Surgery, Heart Center, The First Affiliated Hospital, Sun Yat-sen University, PR China; National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, PR China; NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, PR China; Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, PR China
| | - Shang-Xuan Li
- Division of Cardiac Surgery, Heart Center, The First Affiliated Hospital, Sun Yat-sen University, PR China; National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, PR China; NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, PR China; Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, PR China
| | - Zui Liu
- Division of Cardiac Surgery, Heart Center, The First Affiliated Hospital, Sun Yat-sen University, PR China; National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, PR China; NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, PR China; Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, PR China
| | - Yu-Quan Li
- Division of Cardiac Surgery, Heart Center, The First Affiliated Hospital, Sun Yat-sen University, PR China; National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, PR China; NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, PR China; Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, PR China
| | - Yi-Xin Zhang
- Division of Hypertension and Vascular Diseases, Heart Center, The First Affiliated Hospital, Sun Yat-sen University, PR China; National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, PR China; NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, PR China; Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, PR China
| | - Yu-Peng Jian
- Division of Cardiac Surgery, Heart Center, The First Affiliated Hospital, Sun Yat-sen University, PR China; National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, PR China; NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, PR China; Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, PR China
| | - Zhi-Jun Ou
- Division of Hypertension and Vascular Diseases, Heart Center, The First Affiliated Hospital, Sun Yat-sen University, PR China; National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, PR China; NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, PR China; Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, PR China
| | - Jing-Song Ou
- Division of Cardiac Surgery, Heart Center, The First Affiliated Hospital, Sun Yat-sen University, PR China; National-Guangdong Joint Engineering Laboratory for Diagnosis and Treatment of Vascular Diseases, PR China; NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, PR China; Guangdong Provincial Engineering and Technology Center for Diagnosis and Treatment of Vascular Diseases, PR China; Guangdong Provincial Key Laboratory of Brain Function and Disease,Guangzhou, 510080, PR China.
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5
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Gorska-Ponikowska M, Ploska A, Jacewicz D, Szkatula M, Barone G, Lo Bosco G, Lo Celso F, Dabrowska AM, Kuban-Jankowska A, Gorzynik-Debicka M, Knap N, Chmurzynski L, Dobrucki LW, Kalinowski L, Wozniak M. Modification of DNA structure by reactive nitrogen species as a result of 2-methoxyestradiol-induced neuronal nitric oxide synthase uncoupling in metastatic osteosarcoma cells. Redox Biol 2020; 32:101522. [PMID: 32305006 PMCID: PMC7162974 DOI: 10.1016/j.redox.2020.101522] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 03/23/2020] [Accepted: 03/24/2020] [Indexed: 12/16/2022] Open
Abstract
2-methoxyestradiol (2-ME) is a physiological anticancer compound, metabolite of 17β-estradiol. Previously, our group evidenced that from mechanistic point of view one of anticancer mechanisms of action of 2-ME is specific induction and nuclear hijacking of neuronal nitric oxide synthase (nNOS), resulting in local generation of nitro-oxidative stress and finally, cancer cell death. The current study aims to establish the substantial mechanism of generation of reactive nitrogen species by 2-ME. We further achieved to identify the specific reactive nitrogen species involved in DNA-damaging mechanism of 2-ME. The study was performed using metastatic osteosarcoma 143B cells. We detected the release of biologically active (free) nitric oxide (•NO) with concurrent measurements of peroxynitrite (ONOO−) in real time in a single cell of 143B cell line by using •NO/ONOO− sensitive microsensors after stimulation with calcium ionophore. Detection of nitrogen dioxide (•NO2) and determination of chemical rate constants were carried out by a stopped-flow technique. The affinity of reactive nitrogen species toward the guanine base of DNA was evaluated by density functional theory calculations. Expression and localization of nuclear factor NF-kB was determined using imaging cytometry, while cell viability assay was evaluated by MTT assay. Herein, we presented that 2-ME triggers pro-apoptotic signalling cascade by increasing cellular reactive nitrogen species overproduction – a result of enzymatic uncoupling of increased nNOS protein levels. In particular, we proved that ONOO− and •NO2 directly formed from peroxynitrous acid (ONOOH) and/or by auto-oxidation of •NO, are inducers of DNA damage in anticancer mechanism of 2-ME. Specifically, the affinity of reactive nitrogen species toward the guanine base of DNA, evaluated by density functional theory calculations, decreased in the order: ONOOH > ONOO− > •NO2 > •NO. Therefore, we propose to consider the specific inducers of nNOS as an effective tool in the field of chemotherapy.
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Affiliation(s)
- Magdalena Gorska-Ponikowska
- Department of Medical Chemistry, Medical University of Gdansk, 1 Debinki St, 80-211, Gdansk, Poland; Euro-Mediterranean Institute of Science and Technology, Palermo, Italy; Department of Biophysics, Institute of Biomaterials and Biomolecular Systems, University of Stuttgart, Stuttgart, Germany.
| | - Agata Ploska
- Department of Medical Laboratory Diagnostics, Medical University of Gdansk, Gdansk, Poland; Biobanking and Biomolecular Resources Research Infrastructure Poland (BBMRI.PL), Gdansk, Poland
| | - Dagmara Jacewicz
- Department of General and Inorganic Chemistry, University of Gdansk, Gdansk, Poland
| | - Michal Szkatula
- Department of Medical Chemistry, Medical University of Gdansk, 1 Debinki St, 80-211, Gdansk, Poland
| | - Giampaolo Barone
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, University of Palermo,Palermo, Italy
| | - Giosuè Lo Bosco
- Euro-Mediterranean Institute of Science and Technology, Palermo, Italy; Department of Mathematics and Computer Science, University of Palermo, Palermo, Italy
| | - Fabrizio Lo Celso
- Department of Physics and Chemistry "Emilio Segrè", University of Palermo, Palermo, Italy
| | | | - Alicja Kuban-Jankowska
- Department of Medical Chemistry, Medical University of Gdansk, 1 Debinki St, 80-211, Gdansk, Poland
| | - Monika Gorzynik-Debicka
- Department of Medical Chemistry, Medical University of Gdansk, 1 Debinki St, 80-211, Gdansk, Poland
| | - Narcyz Knap
- Department of Medical Chemistry, Medical University of Gdansk, 1 Debinki St, 80-211, Gdansk, Poland
| | - Lech Chmurzynski
- Department of General and Inorganic Chemistry, University of Gdansk, Gdansk, Poland
| | - Lawrence Wawrzyniec Dobrucki
- Department of Medical Laboratory Diagnostics, Medical University of Gdansk, Gdansk, Poland; Biobanking and Biomolecular Resources Research Infrastructure Poland (BBMRI.PL), Gdansk, Poland; Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA; Beckman Institute for Advanced Science and Technology, Urbana, IL, USA
| | - Leszek Kalinowski
- Department of Medical Laboratory Diagnostics, Medical University of Gdansk, Gdansk, Poland; Biobanking and Biomolecular Resources Research Infrastructure Poland (BBMRI.PL), Gdansk, Poland
| | - Michal Wozniak
- Department of Medical Chemistry, Medical University of Gdansk, 1 Debinki St, 80-211, Gdansk, Poland
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Jiang GB, Zhang WY, He M, Gu YY, Bai L, Wang YJ, Yi QY, Du F. Design and synthesis of new ruthenium polypyridyl complexes with potent antitumor activity in vitro. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 220:117132. [PMID: 31146211 DOI: 10.1016/j.saa.2019.05.037] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Revised: 05/06/2019] [Accepted: 05/12/2019] [Indexed: 06/09/2023]
Abstract
We herein report the synthesis, characterization and anticancer activity of BTPIP (2-(4-(benzo[b]thiophen-2-yl)phenyl)-1H-imidazo[4,5-f][1,10]phenanthroline) and its four ruthenium(II) polypyridyl complexes [Ru(NN)2(BTPIP)](ClO4)2 (N-N = bpy = 2,2'-bipyridine, Ru(II)-1; phen = 1,10-phenanthroline, Ru(II)-2; dmb = 4,4'-dimethyl-2,2'-bipyridine, Ru(II)-3; dmp = 2,9-dimethyl-1,10-phenanthroline, Ru(II)-4). The DNA binding behaviors reveal that the complexes bind to calf thymus DNA by intercalation. Cytotoxicity of the complexes against A549, HepG-2, SGC-7901 and Hela cells were evaluated in vitro. Complexes Ru(II)-1, Ru(II)-2, Ru(II)-3, Ru(II)-4 show moderate activity on the cell proliferation in A549 cells with IC50 values of 9.3 ± 1.2, 12.1 ± 1.6, 10.3 ± 1.6, 8.9 ± 1.2 μM, respectively. Apoptosis assessment, intracellular mitochondrial membrane potential (MMP), location in mitochondria, reactive oxygen species (ROS), cell invasion assay and cell cycle arrest were also performed to explore the mechanism of this action. When the concentration of the ruthenium(II) complexes is increased, the amount of reactive oxygen species increases obviously and the mitochondrial membrane potential decreases dramatically in A549 cells. Most importantly, the ruthenium(II) polypyridyl complexes could arrive the cytoplasm through the cell membrane and accumulate in the mitochondria. These results showed that the ruthenium(II) complexes could induce apoptosis in A549 cells through an ROS-mediated mitochondrial dysfunction pathway.
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Affiliation(s)
- Guang-Bin Jiang
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Function Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China.
| | - Wen-Yao Zhang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Miao He
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Yi-Ying Gu
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Lan Bai
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Yang-Jie Wang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Qiao-Yan Yi
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Fan Du
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
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7
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Zhou L, Tang S, Yang L, Huang X, Zou L, Huang Y, Dong S, Zhou X, Yang X. Cerium ion promotes the osteoclastogenesis through the induction of reactive oxygen species. J Trace Elem Med Biol 2019; 52:126-135. [PMID: 30732873 DOI: 10.1016/j.jtemb.2018.12.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 11/23/2018] [Accepted: 12/10/2018] [Indexed: 11/21/2022]
Abstract
Cerium and cerium containing materials have been drawing increasing attentions in industrial and biomedical applications in recent decades. The increased applications of cerium have also increased the risk of human body exposed to cerium ions. Due to its similar ionic radius to calcium(II), cerium(III) have found mainly deposited in the skeletal system. However, the effects of cerium(III) on the bone metabolism homeostasis remain poorly understood. In the present study, the effect of cerium(III) on the osteoclastogenesis which plays a pivotal role in bone metabolism homeostasis was investigated. Cerium(III) could enhance the expression and activity of NADPH oxidase1 (Nox1) leading to the elevation of intracellular reactive oxygen species (ROS) level. The augmentation of ROS level activated the RANKL dependent osteoclasts differentiation pathways resulted in the promotion of osteoclastogenesis, while anions associated with cerium(III) cation have no effects on the differentiation of osteoclasts. The cerium(III) activated osteoclasts exhibited enhanced bone resorption capability. These results provided fundamental information for understanding the potential effects of cerium(III) on the metabolism homeostasis of skeletal system which is of great reference value for future biomedical applications of cerium salts.
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Affiliation(s)
- Lan Zhou
- School of Biomedical Engineering and Medical Imaging, Third Military Medical University, China
| | - Shupei Tang
- Institute of Immunology, Third Military Medical University, China
| | - Lu Yang
- School of Biomedical Engineering and Medical Imaging, Third Military Medical University, China
| | - Xiaoyong Huang
- Institute of Immunology, Third Military Medical University, China
| | - Ling Zou
- School of Biomedical Engineering and Medical Imaging, Third Military Medical University, China
| | - Yu Huang
- Department of Gastroenterology, Xinqiao Hospital, Third Military Medical University, China
| | - Shiwu Dong
- School of Biomedical Engineering and Medical Imaging, Third Military Medical University, China
| | - Xinyuan Zhou
- Institute of Immunology, Third Military Medical University, China.
| | - Xiaochao Yang
- School of Biomedical Engineering and Medical Imaging, Third Military Medical University, China.
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8
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Endothelial modulation of a nitric oxide donor complex-induced relaxation in normotensive and spontaneously hypertensive rats. Life Sci 2018; 201:130-140. [DOI: 10.1016/j.lfs.2018.03.055] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Revised: 03/14/2018] [Accepted: 03/27/2018] [Indexed: 12/29/2022]
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9
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Abstract
PURPOSE OF REVIEW Although the roles of oxidant stress and redox perturbations in hypertension have been the subject of several reviews, role of thioredoxin (Trx), a major cellular redox protein in age-related hypertension remains inadequately reviewed. The purpose of this review is to bring readers up-to-date with current understanding of the role of thioredoxin in age-related hypertension. RECENT FINDINGS Age-related hypertension is a major underlying cause of several cardiovascular disorders, and therefore, intensive management of blood pressure is indicated in most patients with cardiovascular complications. Recent studies have shown that age-related hypertension was reversed and remained lowered for a prolonged period in mice with higher levels of human Trx (Trx-Tg). Additionally, injection of human recombinant Trx (rhTrx) decreased hypertension in aged wild-type mice that lasted for several days. Both Trx-Tg and aged wild-type mice injected with rhTrx were normotensive, showed increased NO production, decreased arterial stiffness, and increased vascular relaxation. These studies suggest that rhTrx could potentially be a therapeutic molecule to reverse age-related hypertension in humans. The reversal of age-related hypertension by restoring proteins that have undergone age-related modification is conceptually novel in the treatment of hypertension. Trx reverses age-related hypertension via maintaining vascular redox homeostasis, regenerating critical vasoregulatory proteins oxidized due to advancing age, and restoring native function of proteins that have undergone age-related modifications with loss-of function. Recent studies demonstrate that Trx is a promising molecule that may ameliorate or reverse age-related hypertension in older adults.
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Affiliation(s)
- Kumuda C Das
- Department of Translational and Vascular Biology, University of Texas Health Sciences Center at Tyler, 11937 US Hwy 271, Tyler, TX, 75708, USA.
| | - Venkatesh Kundumani-Sridharan
- Department of Translational and Vascular Biology, University of Texas Health Sciences Center at Tyler, 11937 US Hwy 271, Tyler, TX, 75708, USA
| | - Jaganathan Subramani
- Department of Translational and Vascular Biology, University of Texas Health Sciences Center at Tyler, 11937 US Hwy 271, Tyler, TX, 75708, USA
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