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Dias-Carvalho A, Ferreira M, Reis-Mendes A, Ferreira R, de Lourdes Bastos M, Fernandes E, Sá SI, Capela JP, Carvalho F, Costa VM. Doxorubicin-induced neurotoxicity differently affects the hippocampal formation subregions in adult mice. Heliyon 2024; 10:e31608. [PMID: 38868005 PMCID: PMC11168325 DOI: 10.1016/j.heliyon.2024.e31608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 05/19/2024] [Accepted: 05/20/2024] [Indexed: 06/14/2024] Open
Abstract
Doxorubicin (DOX) is an anthracycline used to treat a wide range of tumours. Despite its effectiveness, it is associated with a long range of adverse effects, of which cognitive deficits stand out. The present study aimed to assess the neurologic adverse outcome pathways of two clinically relevant cumulative doses of DOX. Adult male CD-1 mice received biweekly intraperitoneal administrations for 3 weeks until reaching cumulative doses of 9 mg/kg (DOX9) or 18 mg/kg (DOX18). Animals were euthanized one week after the last administration, and biomarkers of oxidative stress and brain metabolism were evaluated in the whole brain. Coronal sections of fixed brains were used for specific determinations of the prefrontal cortex (PFC) and hippocampal formation (HF). In the whole brain, DOX18 tended to disrupt the antioxidant defences, affecting glutathione levels and manganese superoxide dismutase expression. Considering the regional analysis, DOX18 increased the volume of all brain areas evaluated, while GFAP-immunoreactive astrocytes decreased in the dentate gyrus (DG) and increased in the CA3 region of HF, both in a dose-dependent manner. Concerning the apoptosis pathway, whereas Bax increased in the DOX9 group, it decreased in the DOX18 group. Only in the latter group did Bcl-2 levels also decrease. While p53 only increased in the CA3 region of the DOX9 group, AIF increased in the PFC and DG of DOX18. Finally, phosphorylation of Tau decreased with the highest DOX dose in DG and CA3, while TNF-α levels increased in CA1 of DOX18. Our results indicate new pathways not yet described that could be responsible for the cognitive impairments observed in treated patients.
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Affiliation(s)
- Ana Dias-Carvalho
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4050-313, Porto, Portugal
- UCIBIO–Applied Molecular Biosciences Unit, Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, 4050‐313, Porto, Portugal
| | - Mariana Ferreira
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4050-313, Porto, Portugal
- UCIBIO–Applied Molecular Biosciences Unit, Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, 4050‐313, Porto, Portugal
- LAQV/REQUIMTE, Chemistry Department, University of Aveiro, Aveiro, Portugal
| | - Ana Reis-Mendes
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4050-313, Porto, Portugal
- UCIBIO–Applied Molecular Biosciences Unit, Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, 4050‐313, Porto, Portugal
| | - Rita Ferreira
- LAQV/REQUIMTE, Chemistry Department, University of Aveiro, Aveiro, Portugal
| | - Maria de Lourdes Bastos
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4050-313, Porto, Portugal
- UCIBIO–Applied Molecular Biosciences Unit, Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, 4050‐313, Porto, Portugal
| | - Eduarda Fernandes
- LAQV/REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - Susana Isabel Sá
- Unit of Anatomy, Department of Biomedicine, Faculty of Medicine, University of Porto, Porto, Portugal
- Center for Health Technology and Services Research (CINTESIS), Faculty of Medicine, University of Porto, Porto, Portugal
| | - João Paulo Capela
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4050-313, Porto, Portugal
- UCIBIO–Applied Molecular Biosciences Unit, Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, 4050‐313, Porto, Portugal
- FP-I3ID, Faculdade de Ciências da Saúde, Universidade Fernando Pessoa, Porto, Portugal
| | - Félix Carvalho
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4050-313, Porto, Portugal
- UCIBIO–Applied Molecular Biosciences Unit, Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, 4050‐313, Porto, Portugal
| | - Vera Marisa Costa
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4050-313, Porto, Portugal
- UCIBIO–Applied Molecular Biosciences Unit, Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, 4050‐313, Porto, Portugal
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Domán A, Dóka É, Garai D, Bogdándi V, Balla G, Balla J, Nagy P. Interactions of reactive sulfur species with metalloproteins. Redox Biol 2023; 60:102617. [PMID: 36738685 PMCID: PMC9926313 DOI: 10.1016/j.redox.2023.102617] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/23/2023] [Accepted: 01/24/2023] [Indexed: 01/28/2023] Open
Abstract
Reactive sulfur species (RSS) entail a diverse family of sulfur derivatives that have emerged as important effector molecules in H2S-mediated biological events. RSS (including H2S) can exert their biological roles via widespread interactions with metalloproteins. Metalloproteins are essential components along the metabolic route of oxygen in the body, from the transport and storage of O2, through cellular respiration, to the maintenance of redox homeostasis by elimination of reactive oxygen species (ROS). Moreover, heme peroxidases contribute to immune defense by killing pathogens using oxygen-derived H2O2 as a precursor for stronger oxidants. Coordination and redox reactions with metal centers are primary means of RSS to alter fundamental cellular functions. In addition to RSS-mediated metalloprotein functions, the reduction of high-valent metal centers by RSS results in radical formation and opens the way for subsequent per- and polysulfide formation, which may have implications in cellular protection against oxidative stress and in redox signaling. Furthermore, recent findings pointed out the potential role of RSS as substrates for mitochondrial energy production and their cytoprotective capacity, with the involvement of metalloproteins. The current review summarizes the interactions of RSS with protein metal centers and their biological implications with special emphasis on mechanistic aspects, sulfide-mediated signaling, and pathophysiological consequences. A deeper understanding of the biological actions of reactive sulfur species on a molecular level is primordial in H2S-related drug development and the advancement of redox medicine.
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Affiliation(s)
- Andrea Domán
- Department of Molecular Immunology and Toxicology and the National Tumor Biology Laboratory, National Institute of Oncology, 1122, Budapest, Hungary
| | - Éva Dóka
- Department of Molecular Immunology and Toxicology and the National Tumor Biology Laboratory, National Institute of Oncology, 1122, Budapest, Hungary
| | - Dorottya Garai
- Department of Molecular Immunology and Toxicology and the National Tumor Biology Laboratory, National Institute of Oncology, 1122, Budapest, Hungary,Kálmán Laki Doctoral School, University of Debrecen, 4012, Debrecen, Hungary
| | - Virág Bogdándi
- Department of Molecular Immunology and Toxicology and the National Tumor Biology Laboratory, National Institute of Oncology, 1122, Budapest, Hungary
| | - György Balla
- Kálmán Laki Doctoral School, University of Debrecen, 4012, Debrecen, Hungary,Department of Pediatrics, Faculty of Medicine, University of Debrecen, 4032, Debrecen, Hungary,ELKH-UD Vascular Pathophysiology Research Group, 11003, University of Debrecen, 4012, Debrecen, Hungary
| | - József Balla
- Kálmán Laki Doctoral School, University of Debrecen, 4012, Debrecen, Hungary,ELKH-UD Vascular Pathophysiology Research Group, 11003, University of Debrecen, 4012, Debrecen, Hungary,Department of Nephrology, Institute of Internal Medicine, Faculty of Medicine, University of Debrecen, 4012, Debrecen, Hungary
| | - Péter Nagy
- Department of Molecular Immunology and Toxicology and the National Tumor Biology Laboratory, National Institute of Oncology, 1122, Budapest, Hungary; Department of Anatomy and Histology, ELKH Laboratory of Redox Biology, University of Veterinary Medicine, 1078, Budapest, Hungary; Chemistry Institute, University of Debrecen, 4012, Debrecen, Hungary.
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3
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Liu M, Sun X, Chen B, Dai R, Xi Z, Xu H. Insights into Manganese Superoxide Dismutase and Human Diseases. Int J Mol Sci 2022; 23:ijms232415893. [PMID: 36555531 PMCID: PMC9786916 DOI: 10.3390/ijms232415893] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/09/2022] [Accepted: 12/12/2022] [Indexed: 12/15/2022] Open
Abstract
Redox equilibria and the modulation of redox signalling play crucial roles in physiological processes. Overproduction of reactive oxygen species (ROS) disrupts the body's antioxidant defence, compromising redox homeostasis and increasing oxidative stress, leading to the development of several diseases. Manganese superoxide dismutase (MnSOD) is a principal antioxidant enzyme that protects cells from oxidative damage by converting superoxide anion radicals to hydrogen peroxide and oxygen in mitochondria. Systematic studies have demonstrated that MnSOD plays an indispensable role in multiple diseases. This review focuses on preclinical evidence that describes the mechanisms of MnSOD in diseases accompanied with an imbalanced redox status, including fibrotic diseases, inflammation, diabetes, vascular diseases, neurodegenerative diseases, and cancer. The potential therapeutic effects of MnSOD activators and MnSOD mimetics are also discussed. Targeting this specific superoxide anion radical scavenger may be a clinically beneficial strategy, and understanding the therapeutic role of MnSOD may provide a positive insight into preventing and treating related diseases.
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Affiliation(s)
- Mengfan Liu
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
- Engineering Research Center, Shanghai Colleges for TCM New Drug Discovery, Shanghai 201203, China
| | - Xueyang Sun
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
- Engineering Research Center, Shanghai Colleges for TCM New Drug Discovery, Shanghai 201203, China
| | - Boya Chen
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Rongchen Dai
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
- Engineering Research Center, Shanghai Colleges for TCM New Drug Discovery, Shanghai 201203, China
| | - Zhichao Xi
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
- Engineering Research Center, Shanghai Colleges for TCM New Drug Discovery, Shanghai 201203, China
- Correspondence: (Z.X.); (H.X.)
| | - Hongxi Xu
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
- Engineering Research Center, Shanghai Colleges for TCM New Drug Discovery, Shanghai 201203, China
- Correspondence: (Z.X.); (H.X.)
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The structure-function relationships and physiological roles of MnSOD mutants. Biosci Rep 2022; 42:231385. [PMID: 35662317 PMCID: PMC9208312 DOI: 10.1042/bsr20220202] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 05/10/2022] [Accepted: 06/01/2022] [Indexed: 11/17/2022] Open
Abstract
In this review, we focus on understanding the structure–function relationships of numerous manganese superoxide dismutase (MnSOD) mutants to investigate the role that various amino acids play to maintain enzyme quaternary structure or the active site structure, catalytic potential and metal homeostasis in MnSOD, which is essential to maintain enzyme activity. We also observe how polymorphisms of MnSOD are linked to pathologies and how post-translational modifications affect the antioxidant properties of MnSOD. Understanding how modified forms of MnSOD may act as tumor promoters or suppressors by altering the redox status in the body, ultimately aid in generating novel therapies that exploit the therapeutic potential of mutant MnSODs or pave the way for the development of synthetic SOD mimics.
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5
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Safar W, Tatar AS, Leray A, Potara M, Liu Q, Edely M, Djaker N, Spadavecchia J, Fu W, Derouich SG, Felidj N, Astilean S, Finot E, Lamy de la Chapelle M. New insight into the aptamer conformation and aptamer/protein interaction by surface-enhanced Raman scattering and multivariate statistical analysis. NANOSCALE 2021; 13:12443-12453. [PMID: 34251385 DOI: 10.1039/d1nr02180j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We study the interaction between one aptamer and its analyte (the MnSOD protein) by the combination of surface-enhanced Raman scattering and multivariate statistical analysis. We observe the aptamer structure and its evolution during the interaction under different experimental conditions (in air or in buffer). Through the spectral treatment by principal component analysis of a large set of SERS data, we were able to probe the aptamer conformations and orientations relative to the surface assuming that the in-plane nucleoside modes are selectively enhanced. We demonstrate that the aptamer orientation and thus its flexibility rely strongly on the presence of a spacer of 15 thymines and on the experimental conditions with the aptamer lying on the surface in air and standing in the buffer. We reveal for the first time that the interaction with MnSOD induces a large loss of flexibility and freezes the aptamer structure in a single conformation.
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Affiliation(s)
- Wafa Safar
- IMMM - UMR 6283 CNRS, Le Mans Université, Avenue Olivier Messiaen, 72085 Le Mans, Cedex 9, France.
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Pap R, Pandur E, Jánosa G, Sipos K, Agócs A, Deli J. Lutein Exerts Antioxidant and Anti-Inflammatory Effects and Influences Iron Utilization of BV-2 Microglia. Antioxidants (Basel) 2021; 10:antiox10030363. [PMID: 33673707 PMCID: PMC7997267 DOI: 10.3390/antiox10030363] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/19/2021] [Accepted: 02/23/2021] [Indexed: 12/12/2022] Open
Abstract
Lutein is a tetraterpene carotenoid, which has been reported as an important antioxidant and it is widely used as a supplement. Oxidative stress participates in many human diseases, including different types of neurodegenerative disorders. Microglia, the primary immune effector cells in the central nervous system, are implicated in these disorders by producing harmful substances such as reactive oxygen species (ROS). The protective mechanisms which scavenge ROS include enzymes and antioxidant substances. The protective effects of different carotenoids against oxidative stress have been described previously. Our study focuses on the effects of lutein on antioxidant enzymes, cytokines and iron metabolism under stress conditions in BV-2 microglia. We performed cell culture experiments: BV-2 cells were treated with lutein and/or with H2O2; the latter was used for inducing oxidative stress in microglial cells. Real-time PCR was performed for gene expression analyses of antioxidant enzymes, and ELISA was used for the detection of pro- and anti-inflammatory cytokines. Our results show that the application of lutein suppressed the H2O2-induced ROS (10′: 7.5 ng + 10 µM H2O2, p = 0.0002; 10 ng/µL + 10 µM H2O2, p = 0.0007), influenced iron utilization and changed the anti-inflammatory and pro-inflammatory cytokine secretions in BV-2 cells. Lutein increased the IL-10 secretions compared to control (24 h: 7.5 ng/µL p = 0.0274; 10 ng/µL p = 0.0008) and to 10 µM H2O2-treated cells (24 h: 7.5 ng/µL + H2O2, p = 0.0003; 10 ng/µL + H2O2, p = 0.0003), while it decreased the TNFα secretions compared to H2O2 treated cells (24 h: 7.5 ng/µL + H2O2, p < 0.0001; 10 ng/µL + H2O2, p < 0.0001). These results contribute to understanding the effects of lutein, which may help in preventing or suppressing ROS-mediated microglia activation, which is related to neuronal degeneration in oxidative stress scenario.
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Affiliation(s)
- Ramóna Pap
- Department of Pharmaceutical Biology, Faculty of Pharmacy, University of Pécs, Rókus u. 2., H-7624 Pécs, Hungary; (R.P.); (E.P.); (G.J.); (K.S.)
| | - Edina Pandur
- Department of Pharmaceutical Biology, Faculty of Pharmacy, University of Pécs, Rókus u. 2., H-7624 Pécs, Hungary; (R.P.); (E.P.); (G.J.); (K.S.)
| | - Gergely Jánosa
- Department of Pharmaceutical Biology, Faculty of Pharmacy, University of Pécs, Rókus u. 2., H-7624 Pécs, Hungary; (R.P.); (E.P.); (G.J.); (K.S.)
| | - Katalin Sipos
- Department of Pharmaceutical Biology, Faculty of Pharmacy, University of Pécs, Rókus u. 2., H-7624 Pécs, Hungary; (R.P.); (E.P.); (G.J.); (K.S.)
| | - Attila Agócs
- Department of Biochemistry and Medical Chemistry, Medical School, University of Pécs, Szigeti út 12., H-7624 Pécs, Hungary;
| | - József Deli
- Department of Biochemistry and Medical Chemistry, Medical School, University of Pécs, Szigeti út 12., H-7624 Pécs, Hungary;
- Department of Pharmacognosy, Faculty of Pharmacy, University of Pécs, Rókus u. 2., H-7624 Pécs, Hungary
- Correspondence:
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Sweeney JD, Debeljak M, Riel S, Millena AC, Eshleman JR, Paller CJ, Odero-Marah V. Val16A SOD2 Polymorphism Promotes Epithelial-Mesenchymal Transition Antagonized by Muscadine Grape Skin Extract in Prostate Cancer Cells. Antioxidants (Basel) 2021; 10:antiox10020213. [PMID: 33535682 PMCID: PMC7912849 DOI: 10.3390/antiox10020213] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 01/13/2021] [Accepted: 01/25/2021] [Indexed: 01/04/2023] Open
Abstract
Epithelial–mesenchymal transition (EMT), a key event in cancer metastasis, allows polarized epithelial cells to assume mesenchymal morphologies, enhancing invasiveness and migration, and can be induced by reactive oxygen species (ROS). Val16A (Ala) SOD2 polymorphism has been associated with increased prostate cancer (PCa) risk. We hypothesized that SOD2 Ala single nucleotide polymorphism (SNP) may promote EMT. We analyzed SOD2 expression and genotype in various prostate cell lines. Stable overexpression of Ala-SOD2 or Val-SOD2 allele was performed in Lymph Node Carcinoma of the Prostate (LNCaP) cells followed by analysis of intracellular ROS and EMT marker protein expression. Treatments were performed with muscadine grape skin extract (MSKE) antioxidant, with or without addition of H2O2 to provide further oxidative stress. Furthermore, MTS cell proliferation, cell migration, and apoptosis assays were completed. The results showed that SOD2 expression did not correlate with tumor aggressiveness nor SOD2 genotype. We demonstrated that the Ala-SOD2 allele was associated with marked induction of EMT indicated by higher Snail and vimentin, lower E-cadherin, and increased cell migration, when compared to Val-SOD2 allele or Neo control cells. Ala-SOD2 SNP cells exhibited increased levels of total ROS and superoxide and were more sensitive to co-treatment with H2O2 and MSKE, which led to reduced cell growth and increased apoptosis. Additionally, MSKE inhibited Ala-SOD2 SNP-mediated EMT. Our data indicates that treatment with a combination of H2O2-generative drugs, such as certain chemotherapeutics and antioxidants such as MSKE that targets superoxide, hold promising therapeutic potential to halt PCa progression in the future.
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Affiliation(s)
- Janae D. Sweeney
- Center for Cancer Research and Therapeutic Development and Department of Biological Sciences, Clark Atlanta University, Atlanta, GA 30314, USA; (J.D.S.); (A.C.M.)
| | - Marija Debeljak
- Department of Pathology, The Sol Goldman Pancreatic Cancer Research Center, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (M.D.); (S.R.); (J.R.E.)
- Department of Oncology, The Sol Goldman Pancreatic Cancer Research Center, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Stacy Riel
- Department of Pathology, The Sol Goldman Pancreatic Cancer Research Center, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (M.D.); (S.R.); (J.R.E.)
- Department of Oncology, The Sol Goldman Pancreatic Cancer Research Center, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Ana Cecilia Millena
- Center for Cancer Research and Therapeutic Development and Department of Biological Sciences, Clark Atlanta University, Atlanta, GA 30314, USA; (J.D.S.); (A.C.M.)
| | - James R. Eshleman
- Department of Pathology, The Sol Goldman Pancreatic Cancer Research Center, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (M.D.); (S.R.); (J.R.E.)
- Department of Oncology, The Sol Goldman Pancreatic Cancer Research Center, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Channing J. Paller
- The Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA;
| | - Valerie Odero-Marah
- Center for Cancer Research and Therapeutic Development and Department of Biological Sciences, Clark Atlanta University, Atlanta, GA 30314, USA; (J.D.S.); (A.C.M.)
- Correspondence:
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8
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Dekhili R, Cherni K, Liu H, Li X, Djaker N, Spadavecchia J. Aptamer-Gold(III) Complex Nanoparticles: A New Way to Detect Cu, Zn SOD Glycoprotein. ACS OMEGA 2020; 5:13851-13859. [PMID: 32566851 PMCID: PMC7301578 DOI: 10.1021/acsomega.0c01192] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 05/21/2020] [Indexed: 05/25/2023]
Abstract
Aptamers are small biomolecules composed of 20-100 nucleotides that recognize target molecules in three-dimensional structures. These natural targeting molecules have attracted interest in the biomedical field as biomarkers for cancer diagnostics. In this study, we investigated the interaction of a characteristic aptamer with its target protein, Cu, Zn superoxide dismutase (SOD 4), on a gold nanoparticle (AuNP) surface under experimental conditions. For this purpose, we applied two protocols to coat SOD 4 aptamer (APT) on the nanoparticle surface: carbodiimide chemistry (EDC/NHS) (Method ON) and a complexation methodology (Method IN). The nano-aptamer's interactions with SOD 4 were detected by UV-vis absorption and Raman spectroscopy in a range of protein concentrations (from 1 μM to 50 nM). We believe that the interaction is heavily dependent on the nature of the biomarker (SOD 4) and also on the steric arrangement of the aptamer on the gold nanoparticle surface. The lowest detectable concentration (limit of detection, LOD) was about 2 nM for APT IN PEG-AuNPs and 8 nM for APT ON PEG-AuNPs. For the first time, we demonstrated a very sensitive detection of SOD 4 in the nanomolar concentration range with new ways of biosensor synthesis (APT IN and ON), providing a very strong tool to understand the effect of aptamer conformation to detect SOD 4.
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Affiliation(s)
- Rawdha Dekhili
- CNRS,
UMR 7244, NBD-CSPBAT, Laboratory of Chemistry, Structures and Properties
of Biomaterials and Therapeutic Agents University Paris13, Sorbonne Paris Nord, Bobigny 93000, France
| | - Khaoula Cherni
- CNRS,
UMR 7244, NBD-CSPBAT, Laboratory of Chemistry, Structures and Properties
of Biomaterials and Therapeutic Agents University Paris13, Sorbonne Paris Nord, Bobigny 93000, France
| | - Hui Liu
- Department
of Hepatobiliary Surgery, Shenzhen University General Hospital &
Guangdong Provincial Key Laboratory of Regional Immunity and Diseases
& Carson International Cancer Shenzhen University General Hospital
& Shenzhen University Clinical Medical Academy Center, Shenzhen University, Shenzhen 518000, China
| | - Xiaowu Li
- Department
of Hepatobiliary Surgery, Shenzhen University General Hospital &
Guangdong Provincial Key Laboratory of Regional Immunity and Diseases
& Carson International Cancer Shenzhen University General Hospital
& Shenzhen University Clinical Medical Academy Center, Shenzhen University, Shenzhen 518000, China
| | - Nadia Djaker
- CNRS,
UMR 7244, NBD-CSPBAT, Laboratory of Chemistry, Structures and Properties
of Biomaterials and Therapeutic Agents University Paris13, Sorbonne Paris Nord, Bobigny 93000, France
| | - Jolanda Spadavecchia
- CNRS,
UMR 7244, NBD-CSPBAT, Laboratory of Chemistry, Structures and Properties
of Biomaterials and Therapeutic Agents University Paris13, Sorbonne Paris Nord, Bobigny 93000, France
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Characterisation of recombinant thermostable manganese-superoxide dismutase (NeMnSOD) from Nerium oleander. Mol Biol Rep 2020; 47:3251-3270. [DOI: 10.1007/s11033-020-05374-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 03/07/2020] [Indexed: 12/17/2022]
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10
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Zhou C, Lyu LH, Miao HK, Bahr T, Zhang QY, Liang T, Zhou HB, Chen GR, Bai Y. Redox regulation by SOD2 modulates colorectal cancer tumorigenesis through AMPK-mediated energy metabolism. Mol Carcinog 2020; 59:545-556. [PMID: 32149414 DOI: 10.1002/mc.23178] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 02/25/2020] [Accepted: 02/25/2020] [Indexed: 12/28/2022]
Abstract
Colorectal cancer (CRC) is a common malignancy. Many reports have implicated aberrant mitochondrial activity in the progression of CRC, with particular emphasis on the dysregulation of redox signaling and oxidative stress. In this study, we focused on manganese superoxide dismutase (MnSOD/SOD2), a key antioxidant enzyme, which maintains intracellular redox homeostasis. Current literature presents conflicting mechanisms for how SOD2 influences tumorigenesis and tumor progression. Here, we explored the role of SOD2 in CRC specifically. We found high levels of SOD2 expression in CRC tissues. We carried out a series of experiments to determine whether knockdown of SOD2 expression in CRC cell lines would reverse features of tumorigenesis. We found that reduced SOD2 expression decreased cell proliferation, migration, and invasion activity in CRC cells. Results from an additional series of experiments on mitochondrial function implicated a dual role for SOD2 in promoting CRC progression. First, proper level of SOD2 helped CRC cells maintain mitochondrial function by disposal of superoxide (O2 .- ). Second, over-expression of SOD2 induced H2 O2 -mediated tumorigenesis by upregulating AMPK and glycolysis. Our results indicate that SOD2 may promote the occurrence and development of CRC by regulating the energy metabolism mediated by AMPK signaling pathways.
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Affiliation(s)
- Chen Zhou
- Key Laboratory of Laboratory Medicine, Ministry of Education, Zhejiang Provincial Key Laboratory of Medical Genetics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Li-Hua Lyu
- Key Laboratory of Laboratory Medicine, Ministry of Education, Zhejiang Provincial Key Laboratory of Medical Genetics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Hui-Kai Miao
- Department of Laboratory Medicine, The Second Affiliated Hospital of Nanjing Medical University, Wuxi, China
| | - Tyler Bahr
- Department of Cell Systems and Anatomy, University of Texas Health San Antonio, San Antonio, Texas
| | - Qiong-Ying Zhang
- Department of Pathology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Ting Liang
- Key Laboratory of Laboratory Medicine, Ministry of Education, Zhejiang Provincial Key Laboratory of Medical Genetics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China.,Department of Cell Systems and Anatomy, University of Texas Health San Antonio, San Antonio, Texas
| | - Huai-Bin Zhou
- Key Laboratory of Laboratory Medicine, Ministry of Education, Zhejiang Provincial Key Laboratory of Medical Genetics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Guo-Rong Chen
- Department of Pathology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yidong Bai
- Department of Cell Systems and Anatomy, University of Texas Health San Antonio, San Antonio, Texas
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Kaur V, Goyal AK, Ghosh G, Chandra Si S, Rath G. Development and characterization of pellets for targeted delivery of 5-fluorouracil and phytic acid for treatment of colon cancer in Wistar rat. Heliyon 2020; 6:e03125. [PMID: 32042938 PMCID: PMC7000805 DOI: 10.1016/j.heliyon.2019.e03125] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 06/29/2019] [Accepted: 12/23/2019] [Indexed: 01/04/2023] Open
Abstract
The present study was designed to investigate the therapeutic efficacy of metal chelator and anticancer drug in the treatment of colorectal cancer (CRC). Pellets containing Phytic acid, 5- Fluorouracil (5-FU), Microcrystalline cellulose (MCC) PH 101, Hydroxypropyl Methylcellulose (HPMC) and Barium sulfate were prepared by using extrusion spheronization technique. Prepared pellets were coated with Eudragit S100 to achieve colon-specific drug delivery. Pellets were characterized for various pharmaceutical and micromeritic attributes. The in vivo therapeutic efficacy comprising of both pharmacokinetic and pharmacodynamic parameters was determined in Ehrlich ascites carcinoma (EAC) induced cancer animal model. Phytic acid and 5-FU combinations seem to exert higher cytotoxic activity via increased reactive oxygen species (ROS) level by chelating manganese. Further pharmacokinetic studies reveled approximately 50% lower Cmax in the finished formulation, indicates lower systemic exposure to the drug. X-ray radiography ensures the localized delivery of the encapsulated drug. Histopathological studies indicated no significant local toxicity compared to the uncoated formulation. Results inferred that the proposed combination has superior anticancer activity with minimum systemic and local toxicity and it opens a new avenue in the treatment of colorectal cancer.
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Affiliation(s)
- Veerpal Kaur
- Department of Pharmaceutics, I.S.F.College of Pharmacy, Moga, Punjab, India
| | - Amit K. Goyal
- National Institute of Animal Biotechnology, Hyderabad, India
| | - Goutam Ghosh
- Siksha ‘O’ Anusandhan (Deemed to be University), Kalinga Nagar, Bhubaneswar, Odisha, India
| | - Sudam Chandra Si
- Siksha ‘O’ Anusandhan (Deemed to be University), Kalinga Nagar, Bhubaneswar, Odisha, India
| | - Goutam Rath
- Siksha ‘O’ Anusandhan (Deemed to be University), Kalinga Nagar, Bhubaneswar, Odisha, India
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12
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Cataldi S, Borrelli A, Ceccarini MR, Nakashidze I, Codini M, Belov O, Ivanov A, Krasavin E, Ferri I, Conte C, Patria FF, Traina G, Beccari T, Mancini A, Curcio F, Ambesi-Impiombato FS, Albi E. Neutral Sphingomyelinase Modulation in the Protective/Preventive Role of rMnSOD from Radiation-Induced Damage in the Brain. Int J Mol Sci 2019; 20:ijms20215431. [PMID: 31683613 PMCID: PMC6862120 DOI: 10.3390/ijms20215431] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 10/29/2019] [Accepted: 10/29/2019] [Indexed: 01/06/2023] Open
Abstract
Studies on the relationship between reactive oxygen species (ROS)/manganese superoxide dismutase (MnSOD) and sphingomyelinase (SMase) are controversial. It has been demonstrated that SMase increases the intracellular ROS level and induces gene expression for MnSOD protein. On the other hand, some authors showed that ROS modulate the activation of SMase. The human recombinant manganese superoxide dismutase (rMnSOD) exerting a radioprotective effect on normal cells, qualifies as a possible pharmaceutical tool to prevent and/or cure damages derived from accidental exposure to ionizing radiation. This study aimed to identify neutral SMase (nSMase) as novel molecule connecting rMnSOD to its radiation protective effects. We used a new, and to this date, unique, experimental model to assess the effect of both radiation and rMnSOD in the brain of mice, within a collaborative project among Italian research groups and the Joint Institute for Nuclear Research, Dubna (Russia). Mice were exposed to a set of minor γ radiation and neutrons and a spectrum of neutrons, simulating the radiation levels to which cosmonauts will be exposed during deep-space, long-term missions. Groups of mice were treated or not-treated (controls) with daily subcutaneous injections of rMnSOD during a period of 10 days. An additional group of mice was also pretreated with rMnSOD for three days before irradiation, as a model for preventive measures. We demonstrate that rMnSOD significantly protects the midbrain cells from radiation-induced damage, inducing a strong upregulation of nSMase gene and protein expression. Pretreatment with rMnSOD before irradiation protects the brain with a value of very high nSMase activity, indicating that high levels of activity might be sufficient to exert the rMnSOD preventive role. In conclusion, the protective effect of rMnSOD from radiation-induced brain damage may require nSMase enzyme.
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Affiliation(s)
- Samuela Cataldi
- Department of Pharmaceutical Sciences, University of Perugia, 06126 Perugia, Italy.
| | - Antonella Borrelli
- Molecular Biology and Viral Oncology Unit, Istituto Nazionale Tumori IRCCS "Fondazione G. Pascale", 80131 Napoli, Italy.
| | | | - Irina Nakashidze
- Department of Pharmaceutical Sciences, University of Perugia, 06126 Perugia, Italy.
| | - Michela Codini
- Department of Pharmaceutical Sciences, University of Perugia, 06126 Perugia, Italy.
| | - Oleg Belov
- Laboratory of Radiation Biology, Joint Institute for Nuclear Research, 141980 Dubna, Russia.
| | - Alexander Ivanov
- Laboratory of Radiation Biology, Joint Institute for Nuclear Research, 141980 Dubna, Russia.
| | - Eugene Krasavin
- Laboratory of Radiation Biology, Joint Institute for Nuclear Research, 141980 Dubna, Russia.
| | - Ivana Ferri
- Division of Pathological Anatomy and Histology, Department of Experimental Medicine, School of Medicine and Surgery, University of Perugia, 06126 Perugia, Italy.
| | - Carmela Conte
- Department of Pharmaceutical Sciences, University of Perugia, 06126 Perugia, Italy.
| | | | - Giovanna Traina
- Department of Pharmaceutical Sciences, University of Perugia, 06126 Perugia, Italy.
| | - Tommaso Beccari
- Department of Pharmaceutical Sciences, University of Perugia, 06126 Perugia, Italy.
| | - Aldo Mancini
- Laedhexa Biotechnologies Inc., San Francisco, CA QB3@953, USA.
| | - Francesco Curcio
- Dipartimento di Area Medica, University of Udine, 33100 Udine, Italy.
| | | | - Elisabetta Albi
- Department of Pharmaceutical Sciences, University of Perugia, 06126 Perugia, Italy.
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13
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Abstract
Apart from reliable management of the "powerhouse" of the cell, mitochondria faithfully orchestrate a diverse array of important and critical functions in governing cellular signaling, apoptosis, autophagy, mitophagy and innate and adaptive immune system. Introduction of instability and imbalance in the mitochondrial own genome or the nuclear encoded mitochondrial proteome would result in the manifestation of various diseases through alterations in the oxidative phosphorylation system (OXPHOS) and nuclear-mitochondria retrograde signaling. Understanding mitochondrial biology and dynamism are thus of paramount importance to develop strategies to prevent or treat various diseases caused due to mitochondrial alterations.
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Affiliation(s)
- Santanu Dasgupta
- Department of Medicine, The University of Texas Health Science Center at Tyler, Tyler, Texas, USA
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14
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Malikova E, Carlström M, Kmecova Z, Marusakova M, Zsigmondova B, Krenek P, Klimas J, Henrohn D. Effects of inorganic nitrate in a rat model of monocrotaline-induced pulmonary arterial hypertension. Basic Clin Pharmacol Toxicol 2019; 126:99-109. [PMID: 31429204 DOI: 10.1111/bcpt.13309] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 08/11/2019] [Indexed: 12/27/2022]
Abstract
The nitrate-nitrite-nitric oxide (NO) pathway represents an alternative source of NO generation, which is independent of NO synthase and potentiated by hypoxia. Augmentation of this pathway by dietary nitrate has proven favourable effects in several cardiovascular disease models. However, less is known regarding its potential value in pulmonary arterial hypertension (PAH). The aim of this study was to assess the effects of oral inorganic nitrate administration in monocrotaline (MCT)-induced PAH. Male 12-week-old Wistar rats were injected subcutaneously with monocrotaline (MCT, 60 mg/kg). Nitrate treatment (0.3 or 1 mmol/kg/d; drinking water) commenced on day 12 following the MCT injection and continued for 16 days. Nitrate administration did not attenuate right ventricular (RV) hypertrophy, increased lung weight and up-regulated mRNA expression of brain natriuretic peptide. Plasma nitrate and nitrite levels were significantly increased as well as lung nitrate level, whereas nitrite lung level was decreased following nitrate treatment (1 mmol/kg/d). MCT-induced PAH resulted in an increased MnSOD protein level, which was not observed following nitrate treatment. MCT-associated up-regulation of nNOS in the lung appeared to be dose-dependently prevented by nitrate treatment. Western blot analysis did not reveal any differences in eNOS, iNOS, XO or gp91phox expression in the lungs among the groups. In conclusion, nitrate treatment did not significantly attenuate pathological RV and lung remodelling in the rat MCT model of PAH. The suppression of MnSOD and nNOS expression by nitrate could be interpreted as reduced demand of endogenous antioxidant defence in this model.
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Affiliation(s)
- Eva Malikova
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University in Bratislava, Bratislava, Slovak Republic
| | - Mattias Carlström
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Zuzana Kmecova
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University in Bratislava, Bratislava, Slovak Republic
| | - Margareta Marusakova
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University in Bratislava, Bratislava, Slovak Republic
| | - Bianka Zsigmondova
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University in Bratislava, Bratislava, Slovak Republic
| | - Peter Krenek
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University in Bratislava, Bratislava, Slovak Republic
| | - Jan Klimas
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University in Bratislava, Bratislava, Slovak Republic
| | - Dan Henrohn
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
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15
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Wilson CS, Spaeth JM, Karp J, Stocks BT, Hoopes EM, Stein RW, Moore DJ. B lymphocytes protect islet β cells in diabetes prone NOD mice treated with imatinib. JCI Insight 2019; 5:125317. [PMID: 30964447 PMCID: PMC6538336 DOI: 10.1172/jci.insight.125317] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Accepted: 04/02/2019] [Indexed: 01/10/2023] Open
Abstract
Imatinib (Gleevec) reverses type 1 diabetes (T1D) in NOD mice and is currently in clinical trials in individuals with recent-onset disease. While research has demonstrated that imatinib protects islet β cells from the harmful effects of ER stress, the role the immune system plays in its reversal of T1D has been less well understood, and specific cellular immune targets have not been identified. In this study, we demonstrate that B lymphocytes, an immune subset that normally drives diabetes pathology, are unexpectedly required for reversal of hyperglycemia in NOD mice treated with imatinib. In the presence of B lymphocytes, reversal was linked to an increase in serum insulin concentration, but not an increase in islet β cell mass or proliferation. However, improved β cell function was reflected by a partial recovery of MafA transcription factor expression, a sensitive marker of islet β cell stress that is important to adult β cell function. Imatinib treatment was found to increase the antioxidant capacity of B lymphocytes, improving reactive oxygen species (ROS) handling in NOD islets. This study reveals a novel mechanism through which imatinib enables B lymphocytes to orchestrate functional recovery of T1D β cells.
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Affiliation(s)
- Christopher S. Wilson
- Department of Pediatrics, Ian Burr Division of Endocrinology and Diabetes, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Jason M. Spaeth
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA
| | - Jay Karp
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA
| | - Blair T. Stocks
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Emilee M. Hoopes
- Department of Pediatrics, Ian Burr Division of Endocrinology and Diabetes, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Roland W. Stein
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA
| | - Daniel J. Moore
- Department of Pediatrics, Ian Burr Division of Endocrinology and Diabetes, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
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16
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Azadmanesh J, Lutz WE, Weiss KL, Coates L, Borgstahl GEO. Redox manipulation of the manganese metal in human manganese superoxide dismutase for neutron diffraction. Acta Crystallogr F Struct Biol Commun 2018; 74:677-687. [PMID: 30279321 PMCID: PMC6168772 DOI: 10.1107/s2053230x18011299] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 08/07/2018] [Indexed: 11/17/2022] Open
Abstract
Human manganese superoxide dismutase (MnSOD) is one of the most significant enzymes in preventing mitochondrial dysfunction and related diseases by combating reactive oxygen species (ROS) in the mitochondrial matrix. Mitochondria are the source of up to 90% of cellular ROS generation, and MnSOD performs its necessary bioprotective role by converting superoxide into oxygen and hydrogen peroxide. This vital catalytic function is conducted via cyclic redox reactions between the substrate and the active-site manganese using proton-coupled electron transfers. Owing to protons being difficult to detect experimentally, the series of proton transfers that compose the catalytic mechanism of MnSOD are unknown. Here, methods are described to discern the proton-based mechanism using chemical treatments to control the redox state of large perdeuterated MnSOD crystals and subsequent neutron diffraction. These methods could be applicable to other crystal systems in which proton information on the molecule in question in specific chemical states is desired.
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Affiliation(s)
- Jahaun Azadmanesh
- Eppley Institute for Research in Cancer and Allied Diseases, 986805 Nebraska Medical Center, Omaha, NE 68198-6805, USA
- Department of Biochemistry and Molecular Biology, 985870 Nebraska Medical Center, Omaha, NE 68198-5870, USA
| | - William E. Lutz
- Eppley Institute for Research in Cancer and Allied Diseases, 986805 Nebraska Medical Center, Omaha, NE 68198-6805, USA
| | - Kevin L. Weiss
- Biology and Soft Matter Division, Oak Ridge National Laboratory, 1 Bethel Valley Road, Oak Ridge, TN 37831, USA
| | - Leighton Coates
- Biology and Soft Matter Division, Oak Ridge National Laboratory, 1 Bethel Valley Road, Oak Ridge, TN 37831, USA
| | - Gloria E. O. Borgstahl
- Eppley Institute for Research in Cancer and Allied Diseases, 986805 Nebraska Medical Center, Omaha, NE 68198-6805, USA
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17
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Borrelli A, Bonelli P, Tuccillo FM, Goldfine ID, Evans JL, Buonaguro FM, Mancini A. Role of gut microbiota and oxidative stress in the progression of non-alcoholic fatty liver disease to hepatocarcinoma: Current and innovative therapeutic approaches. Redox Biol 2018; 15:467-479. [PMID: 29413959 PMCID: PMC5975181 DOI: 10.1016/j.redox.2018.01.009] [Citation(s) in RCA: 175] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 01/10/2018] [Accepted: 01/17/2018] [Indexed: 02/07/2023] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) represents the most common chronic liver disease in industrialized countries. NAFLD progresses through the inflammatory phase of non-alcoholic steatohepatitis (NASH) to fibrosis and cirrhosis, with some cases developing liver failure or hepatocellular carcinoma (HCC). Liver biopsy remains the gold standard approach to a definitive diagnosis of NAFLD and the distinction between simple steatosis and NASH. The pathogenesis of NASH is still not clear. Several theories have been proposed ranging from the "Two Hit Theory" to the "Multiple Hit Theory". However, the general consensus is that the gut microbiota, oxidative stress, and mitochondrial damage play key roles in the pathogenesis of NASH. The interaction between the gut epithelia and some commensal bacteria induces the rapid generation of reactive oxygen species (ROS). The main goal of any therapy addressing NASH is to reverse or prevent progression to liver fibrosis/cirrhosis. This problem represents the first "Achilles' heel" of the new molecules being evaluated in most ongoing clinical trials. The second is the inability of these molecules to reach the mitochondria, the primary sites of energy production and ROS generation. Recently, a variety of non-pharmacological and pharmacological treatment approaches for NASH have been evaluated including vitamin E, the thiazolidinediones, and novel molecules related to NASH pathogenesis (including obeticholic acid and elafibranor). Recently, a new isoform of human manganese superoxide dismutase (MnSOD) was isolated and obtained in a synthetic recombinant form designated rMnSOD. This protein has been shown to be a powerful antioxidant capable of mediating ROS dismutation, penetrating biological barriers via its uncleaved leader peptide, and reducing portal hypertension and fibrosis in rats affected by liver cirrhosis. Based on these distinctive characteristics, it can be hypothesized that this novel recombinant protein (rMnSOD) potentially represents a new and highly efficient adjuvant therapy to counteract the progression from NASH to HCC.
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Affiliation(s)
- Antonella Borrelli
- Molecular Biology and Viral Oncology Unit, Istituto Nazionale Tumori IRCCS "Fondazione G Pascale", 80131 Napoli, Italy.
| | - Patrizia Bonelli
- Molecular Biology and Viral Oncology Unit, Istituto Nazionale Tumori IRCCS "Fondazione G Pascale", 80131 Napoli, Italy
| | - Franca Maria Tuccillo
- Molecular Biology and Viral Oncology Unit, Istituto Nazionale Tumori IRCCS "Fondazione G Pascale", 80131 Napoli, Italy
| | | | | | - Franco Maria Buonaguro
- Molecular Biology and Viral Oncology Unit, Istituto Nazionale Tumori IRCCS "Fondazione G Pascale", 80131 Napoli, Italy
| | - Aldo Mancini
- Leadhexa Biotechnologies Inc., Belvedere, CA, USA
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18
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Borrelli A, Tornesello AL, Tornesello ML, Buonaguro FM. Cell Penetrating Peptides as Molecular Carriers for Anti-Cancer Agents. Molecules 2018; 23:molecules23020295. [PMID: 29385037 PMCID: PMC6017757 DOI: 10.3390/molecules23020295] [Citation(s) in RCA: 183] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 01/23/2018] [Accepted: 01/27/2018] [Indexed: 12/21/2022] Open
Abstract
Cell membranes with their selective permeability play important functions in the tight control of molecular exchanges between the cytosol and the extracellular environment as the intracellular membranes do within the internal compartments. For this reason the plasma membranes often represent a challenging obstacle to the intracellular delivery of many anti-cancer molecules. The active transport of drugs through such barrier often requires specific carriers able to cross the lipid bilayer. Cell penetrating peptides (CPPs) are generally 5–30 amino acids long which, for their ability to cross cell membranes, are widely used to deliver proteins, plasmid DNA, RNA, oligonucleotides, liposomes and anti-cancer drugs inside the cells. In this review, we describe the several types of CPPs, the chemical modifications to improve their cellular uptake, the different mechanisms to cross cell membranes and their biological properties upon conjugation with specific molecules. Special emphasis has been given to those with promising application in cancer therapy.
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Affiliation(s)
- Antonella Borrelli
- Molecular Biology and Viral Oncology Unit, Istituto Nazionale Tumori IRCCS Fondazione Pascale, 80131 Naples, Italy.
| | - Anna Lucia Tornesello
- Molecular Biology and Viral Oncology Unit, Istituto Nazionale Tumori IRCCS Fondazione Pascale, 80131 Naples, Italy.
| | - Maria Lina Tornesello
- Molecular Biology and Viral Oncology Unit, Istituto Nazionale Tumori IRCCS Fondazione Pascale, 80131 Naples, Italy.
| | - Franco M Buonaguro
- Molecular Biology and Viral Oncology Unit, Istituto Nazionale Tumori IRCCS Fondazione Pascale, 80131 Naples, Italy.
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19
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Azadmanesh J, Borgstahl GEO. A Review of the Catalytic Mechanism of Human Manganese Superoxide Dismutase. Antioxidants (Basel) 2018; 7:antiox7020025. [PMID: 29385710 PMCID: PMC5836015 DOI: 10.3390/antiox7020025] [Citation(s) in RCA: 108] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Revised: 01/13/2018] [Accepted: 01/26/2018] [Indexed: 12/15/2022] Open
Abstract
Superoxide dismutases (SODs) are necessary antioxidant enzymes that protect cells from reactive oxygen species (ROS). Decreased levels of SODs or mutations that affect their catalytic activity have serious phenotypic consequences. SODs perform their bio-protective role by converting superoxide into oxygen and hydrogen peroxide by cyclic oxidation and reduction reactions with the active site metal. Mutations of SODs can cause cancer of the lung, colon, and lymphatic system, as well as neurodegenerative diseases such as Parkinson's disease and amyotrophic lateral sclerosis. While SODs have proven to be of significant biological importance since their discovery in 1968, the mechanistic nature of their catalytic function remains elusive. Extensive investigations with a multitude of approaches have tried to unveil the catalytic workings of SODs, but experimental limitations have impeded direct observations of the mechanism. Here, we focus on human MnSOD, the most significant enzyme in protecting against ROS in the human body. Human MnSOD resides in the mitochondrial matrix, the location of up to 90% of cellular ROS generation. We review the current knowledge of the MnSOD enzymatic mechanism and ongoing studies into solving the remaining mysteries.
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Affiliation(s)
- Jahaun Azadmanesh
- Department of Biochemistry and Molecular Biology, 985870 Nebraska Medical Center, Omaha, NE 68198-5870, USA.
| | - Gloria E O Borgstahl
- Department of Biochemistry and Molecular Biology, 985870 Nebraska Medical Center, Omaha, NE 68198-5870, USA.
- Eppley Institute for Cancer and Allied Diseases, 986805 Nebraska Medical Center, Omaha, NE 68198-6805, USA.
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20
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Tompa DR, Kadhirvel S. Molecular dynamics of a far positioned SOD1 mutant V14M reveals pathogenic misfolding behavior. J Biomol Struct Dyn 2017; 36:4085-4098. [PMID: 29157189 DOI: 10.1080/07391102.2017.1407675] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Human superoxide dismutase (Cu/Zn SOD1) is a homodimeric enzyme. Mutations in Cu/Zn SOD1 causes a familial form of amyotrophic lateral sclerosis (fALS), and aggregation of mutant SOD1 has been proposed to play a role in neurodegeneration. Though a majority of the mutations are point substitutions, there are a few changes that result in amino acid deletions or truncations of the polypeptide. These pathogenic mutations are scattered throughout the three-dimensional structure of the dimeric enzyme, which creates a puzzling pattern to investigate the molecular determinants of fALS. The most common hypothesis proposed that the misfolding of SOD1 mutants are primarily triggered by decreased affinity for metal ions. However, this hypothesis is challenging, as a significant number of disease-causing mutations are located far away from the metal-binding site and dimer interface. So in the present study, we have investigated the influence of such a far positioned pathogenic mutation, V14M, in altering the stability and folding of the Cu/Zn SOD1. Though the location of Val14 is far positioned, it has a vital role in the stability of SOD1 by preserving its hydrophobic cluster at one end of the β barrel domain. We have performed MD simulations of the V14M mutant for 80 ns timescale. The results reveal the fact that irrespective of its location, V14M mutation triggers a conformational change that is more similar to that of the metal-deficient holo form and could resemble an intermediate state in the folding reaction which results in protein misfolding and aggregation.
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Affiliation(s)
- Dharma Rao Tompa
- a Biomolecular Crystallography Laboratory, Department of Bioinformatics, School of Chemical and Biotechnology , SASTRA University , Thanjavur 613 401 , India
| | - Saraboji Kadhirvel
- a Biomolecular Crystallography Laboratory, Department of Bioinformatics, School of Chemical and Biotechnology , SASTRA University , Thanjavur 613 401 , India
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21
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Abstract
Objective: The polymorphisms/mutations of genes encoding proteins and enzymes involved in lipoprotein metabolism play important roles in the development of diabetic dyslipidemia. The aim of our study was to investigate the effects of LPL (rs320), LIPC (rs2070895), SCARB1 (rs5888), LCAT (rs2292318), CETP (rs708272), ADIPOQ (rs1501299), RETN (rs3745367), PON1 (rs662), and MNSOD (rs4880) gene polymorphisms on lipid metabolism and diabetic dyslipidemia. Methods: This case-control study included 217 patients with diabetic dyslipidemia and 212 healthy age- and gender-matched individuals. Genomic DNA isolation was performed from blood samples, and genotype analysis was performed using melting curve analysis on a LightCycler® 480 Instrument. The chi-square test was used to compare genotype distribution and allele frequencies between the groups. Results: Significant associations were observed between LPL (rs320) (p<0.001), LIPC (rs2070895) (p<0.001), SCARB1 (rs5888) (p<0.001), LCAT (rs2292318) (p<0.001), CETP (rs708272) (p<0.001), ADIPOQ (rs1501299) (p=0.01), RETN (rs3745367) (p<0.001), and MNSOD (rs4880) (p<0.001) polymorphisms and diabetic dyslipidemia. However, no association was observed between PON1 (rs662) polymorphisms and diabetic dyslipidemia (p=0.611). Conclusion: LPL (rs320), LIPC (rs2070895), SCARB1 (rs5888), LCAT (rs2292318), CETP (rs708272), ADIPOQ (rs1501299), RETN (rs3745367), and MNSOD (rs4880) polymorphisms play an important role in basic molecular metabolism in diabetic dyslipidemia. Therefore, these polymorphisms may be used as a predictive marker for diabetic dyslipidemia in high-risk patients. (Anatol J Cardiol 2017; 17: 313-21)
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22
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Zhu X, Wang CQ. pH and redox-operated nanovalve for size-selective cargo delivery on hollow mesoporous silica spheres. J Colloid Interface Sci 2016; 480:39-48. [DOI: 10.1016/j.jcis.2016.06.043] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 06/16/2016] [Accepted: 06/17/2016] [Indexed: 11/25/2022]
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23
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Study on the Protective Effect of a New Manganese Superoxide Dismutase on the Microvilli of Rabbit Eyes Exposed to UV Radiation. BIOMED RESEARCH INTERNATIONAL 2015; 2015:973197. [PMID: 26064973 PMCID: PMC4429218 DOI: 10.1155/2015/973197] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Accepted: 04/20/2015] [Indexed: 12/31/2022]
Abstract
We present a study on the protective effects against UV radiation of a gel formulation containing a new recombinant form of manganese superoxide dismutase on the conjunctiva and corneal epithelia of rabbit eyes. The integrity of the microvilli of both ocular tissues has been considered as an indicator of the health of the tissues. Samples, collected by impression cytology technique, were added of 80 µL of a gel formulation containing superoxide dismutase (2.0 µg/mL) and irradiated with UV rays for 30 minutes and were evaluated with scanning electron microscopy. Wilcoxon test was used to verify the possible occurrence of statistically significant differences between damage for treated and nontreated tissues. Application of gel produces a significant reduction of damage by UV irradiation of ocular epithelia; both epithelia present a significant reduction of damaged microvilli number if treated with the superoxide dismutase gel formulation: the p values (differences between damage found for treated and nontreated both ocular tissues) for conjunctiva and cornea samples were p ≪ 0.01 and p ≪ 0.0001, respectively, at confidence level of 95%. The administration of this gel formulation before UV exposure plays a considerable protective role in ocular tissues of rabbit eye with a significant reduction of the damage.
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Abstract
Oxidative stress is characterized by imbalanced reactive oxygen species (ROS) production and antioxidant defenses. Two main antioxidant systems exist. The nonenzymatic system relies on molecules to directly quench ROS and the enzymatic system is composed of specific enzymes that detoxify ROS. Among the latter, the superoxide dismutase (SOD) family is important in oxidative stress modulation. Of these, manganese-dependent SOD (MnSOD) plays a major role due to its mitochondrial location, i.e., the main site of superoxide (O(2)(·-)) production. As such, extensive research has focused on its capacity to modulate oxidative stress. Early data demonstrated the relevance of MnSOD as an O(2)(·-) scavenger. More recent research has, however, identified a prominent role for MnSOD in carcinogenesis. In addition, SOD downregulation appears associated with health risk in heart and brain. A single nucleotide polymorphism which alters the mitochondria signaling sequence for the cytosolic MnSOD form has been identified. Transport into the mitochondria was differentially affected by allelic presence and a new chapter in MnSOD research thus begun. As a result, an ever-increasing number of diseases appear associated with this allelic variation including metabolic and cardiovascular disease. Although diet and exercise upregulate MnSOD, the relationship between environmental and genetic factors remains unclear.
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Xu Y, Wang L, Li YK, Wang CQ. Oxidation and pH responsive nanoparticles based on ferrocene-modified chitosan oligosaccharide for 5-fluorouracil delivery. Carbohydr Polym 2014; 114:27-35. [DOI: 10.1016/j.carbpol.2014.08.003] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Revised: 07/31/2014] [Accepted: 08/01/2014] [Indexed: 01/01/2023]
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A novel form of the human manganese superoxide dismutase protects rat and human livers undergoing ischaemia and reperfusion injury. Clin Sci (Lond) 2014; 127:527-37. [PMID: 24754522 DOI: 10.1042/cs20140125] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Hepatic microcirculatory dysfunction due to cold storage and warm reperfusion (CS+WR) injury during liver transplantation is partly mediated by oxidative stress and may lead to graft dysfunction. This is especially relevant when steatotic donors are considered. Using primary cultured liver sinusoidal endothelial cells (LSECs), liver grafts from healthy and steatotic rats, and human liver samples, we aimed to characterize the effects of a new recombinant form of human manganese superoxide dismutase (rMnSOD) on hepatic CS+WR injury. After CS+WR, the liver endothelium exhibited accumulation of superoxide anion (O2-) and diminished levels of nitric oxide (NO); these detrimental effects were prevented by rMnSOD. CS+WR control and steatotic rat livers exhibited markedly deteriorated microcirculation and acute endothelial dysfunction, together with liver damage, inflammation, oxidative stress, and low NO. rMnSOD markedly blunted oxidative stress, which was associated with a global improvement in liver damage and microcirculatory derangements. The addition of rMnSOD to CS solution maintained its antioxidant capability, protecting rat and human liver tissues. In conclusion, rMnSOD represents a new and highly effective therapy to significantly upgrade liver procurement for transplantation.
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Nuong NM, Vy NT, Duong HHT. Combinative effects of thanh hao miet giap thang (sweet wormwood and tortoise shell decoction) ingredients on antioxidative activity in vitro. AFRICAN JOURNAL OF TRADITIONAL, COMPLEMENTARY, AND ALTERNATIVE MEDICINES 2014; 11:136-41. [PMID: 25392593 DOI: 10.4314/ajtcam.v11i4.21] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
BACKGROUND Traditional formulae usually exhibit therapeutic effects through the combinations of different ingredients. The purpose of this study was to investigate in vitro anti-oxidative activity of Thanh Hao Miet Giap Thang (THMGT) (Sweet Wormwood and Tortoise Shell Decoction) formula and the interactions of its ingredients leading to the overall anti-oxidative effect. MATERIALS AND METHODS We prepared 31 combinations containing two to four of the five ingredients including Herba Artemisia apiacea L (HbA), Carapax Trionycis (Tryonix sinensis) (CT), Rhizoma Anemarrhenae (Anemarrhena asphodeloides) (RzA), Radix Rehmanniae (Rehmannia glutinosa Libosch) (RdR), Moutan Cortex (Paeonia suffruticosa) (MC). These combinations were tested for anti-oxidative activity using DCFH-DA and DPPH assays on Hep G2 cells. We also analyzed changes in expression of genes involved in antioxidant defense system including Nuclear Factor Erythroid-Derived 2-Like 2 (NFE2L2), catalase (CAT), heme oxygenase-1 (HO-1), glutathione peroxidase (GPx), cytoplasmic superoxide dismutase (SOD1), mitochondrial superoxide dismutase (SOD2). RESULTS The complete formula and all combinations containing Moutan Cortex showed high antioxidant activity in both radical solution-based chemical assay and cellular-based assay. On the contrary, Carapax Trionycis displayed inhibitory effect on the overall antioxidant activity when present in a combination, an effect clearly emphasized in cellular-based assay. Hep G2 cells treated with the formula showed increased gene expression of HO-1 and SOD2 while expression of CAT, SOD1, GPx was unchanged. CONCLUSION Our results suggested that THMGT had anti-oxidative activity essentially through intrinsic reducing capacities and the overall activity of the formula resulted from enhancing and inhibiting interactions of ingredients.
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Affiliation(s)
- Nguyen My Nuong
- Department of Genetics, Faculty of Biology, University of Science, Ho Chi Minh city, Vietnam
| | - Nguyen Thuy Vy
- Department of Genetics, Faculty of Biology, University of Science, Ho Chi Minh city, Vietnam
| | - Ho-Huynh Thuy Duong
- Department of Genetics, Faculty of Biology, University of Science, Ho Chi Minh city, Vietnam
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