51
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Arabidopsis ABCG28 is required for the apical accumulation of reactive oxygen species in growing pollen tubes. Proc Natl Acad Sci U S A 2019; 116:12540-12549. [PMID: 31152136 DOI: 10.1073/pnas.1902010116] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Tip-focused accumulation of reactive oxygen species (ROS) is tightly associated with pollen tube growth and is thus critical for fertilization. However, it is unclear how tip-growing cells establish such specific ROS localization. Polyamines have been proposed to function in tip growth as precursors of the ROS, hydrogen peroxide. The ABC transporter AtABCG28 may regulate ROS status, as it contains multiple cysteine residues, a characteristic of proteins involved in ROS homeostasis. In this study, we found that AtABCG28 was specifically expressed in the mature pollen grains and pollen tubes. AtABCG28 was localized to secretory vesicles inside the pollen tube that moved toward and fused with the plasma membrane of the pollen tube tip. Knocking out AtABCG28 resulted in defective pollen tube growth, failure to localize polyamine and ROS to the growing pollen tube tip, and complete male sterility, whereas ectopic expression of this gene in root hair could recover ROS accumulation at the tip and improved the growth under high-pH conditions, which normally prevent ROS accumulation and tip growth. Together, these data suggest that AtABCG28 is critical for localizing polyamine and ROS at the growing tip. In addition, this function of AtABCG28 is likely to protect the pollen tube from the cytotoxicity of polyamine and contribute to the delivery of polyamine to the growing tip for incorporation into the expanding cell wall.
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52
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Ramos-Molina B, Queipo-Ortuño MI, Lambertos A, Tinahones FJ, Peñafiel R. Dietary and Gut Microbiota Polyamines in Obesity- and Age-Related Diseases. Front Nutr 2019; 6:24. [PMID: 30923709 PMCID: PMC6426781 DOI: 10.3389/fnut.2019.00024] [Citation(s) in RCA: 109] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 02/20/2019] [Indexed: 12/14/2022] Open
Abstract
The polyamines putrescine, spermidine, and spermine are widely distributed polycationic compounds essential for cellular functions. Intracellular polyamine pools are tightly regulated by a complex regulatory mechanism involving de novo biosynthesis, catabolism, and transport across the plasma membrane. In mammals, both the production of polyamines and their uptake from the extracellular space are controlled by a set of proteins named antizymes and antizyme inhibitors. Dysregulation of polyamine levels has been implicated in a variety of human pathologies, especially cancer. Additionally, decreases in the intracellular and circulating polyamine levels during aging have been reported. The differences in the polyamine content existing among tissues are mainly due to the endogenous polyamine metabolism. In addition, a part of the tissue polyamines has its origin in the diet or their production by the intestinal microbiome. Emerging evidence has suggested that exogenous polyamines (either orally administrated or synthetized by the gut microbiota) are able to induce longevity in mice, and that spermidine supplementation exerts cardioprotective effects in animal models. Furthermore, the administration of either spermidine or spermine has been shown to be effective for improving glucose homeostasis and insulin sensitivity and reducing adiposity and hepatic fat accumulation in diet-induced obesity mouse models. The exogenous addition of agmatine, a cationic molecule produced through arginine decarboxylation by bacteria and plants, also exerts significant effects on glucose metabolism in obese models, as well as cardioprotective effects. In this review, we will discuss some aspects of polyamine metabolism and transport, how diet can affect circulating and local polyamine levels, and how the modulation of either polyamine intake or polyamine production by gut microbiota can be used for potential therapeutic purposes.
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Affiliation(s)
- Bruno Ramos-Molina
- Department of Endocrinology and Nutrition, Virgen de la Victoria University Hospital, Institute of Biomedical Research of Malaga, University and Malaga, Malaga, Spain.,CIBER Physiopathology of Obesity and Nutrition (CIBERobn), Institute of Health Carlos III (ISCIII), Madrid, Spain
| | - Maria Isabel Queipo-Ortuño
- CIBER Physiopathology of Obesity and Nutrition (CIBERobn), Institute of Health Carlos III (ISCIII), Madrid, Spain.,Department of Medical Oncology, Virgen de la Victoria University Hospital, Institute of Biomedical Research of Malaga, University and Malaga, Malaga, Spain
| | - Ana Lambertos
- Department of Biochemistry and Molecular Biology B and Immunology, Faculty of Medicine, University of Murcia, Murcia, Spain.,Biomedical Research Institute of Murcia (IMIB), Murcia, Spain
| | - Francisco J Tinahones
- Department of Endocrinology and Nutrition, Virgen de la Victoria University Hospital, Institute of Biomedical Research of Malaga, University and Malaga, Malaga, Spain.,CIBER Physiopathology of Obesity and Nutrition (CIBERobn), Institute of Health Carlos III (ISCIII), Madrid, Spain
| | - Rafael Peñafiel
- Department of Biochemistry and Molecular Biology B and Immunology, Faculty of Medicine, University of Murcia, Murcia, Spain.,Biomedical Research Institute of Murcia (IMIB), Murcia, Spain
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53
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Forte A, Balistreri CR, De Feo M, Della Corte A, Hellstrand P, Persson L, Nilsson BO. Polyamines and microbiota in bicuspid and tricuspid aortic valve aortopathy. J Mol Cell Cardiol 2019; 129:179-187. [PMID: 30825483 DOI: 10.1016/j.yjmcc.2019.02.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 02/25/2019] [Indexed: 02/07/2023]
Abstract
Polyamines are small aliphatic cationic molecules synthesized via a highly regulated pathway and involved in general molecular and cellular phenomena. Both mammalian cells and microorganisms synthesize polyamines, and both sources may contribute to the presence of polyamines in the circulation. The dominant location for microorganisms within the body is the gut. Accordingly, the gut microbiota probably synthesizes most of the polyamines in the circulation in addition to those produced by the mammalian host cells. Polyamines are mandatory for cellular growth and proliferation. Established evidence suggests that the polyamine spermidine prolongs lifespan and improves cardiovascular health in animal models and humans through both local mechanisms, involving improved cardiomyocyte function, and systemic mechanisms, including increased NO bioavailability and reduced systemic inflammation. Higher levels of polyamines have been detected in non-dilated aorta of patients affected by bicuspid aortic valve congenital malformation, an aortopathy associated with an increased risk for thoracic ascending aorta aneurysm. In this review, we discuss metabolism of polyamines and their potential effects on vascular smooth muscle and endothelial cell function in vascular pathology of the thoracic ascending aorta associated with bicuspid or tricuspid aortic valve.
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Affiliation(s)
- Amalia Forte
- Department of Translational Medical Sciences, Università degli Studi della Campania "L. Vanvitelli", Naples, Italy
| | - Carmela Rita Balistreri
- Department of Biomedicine, Neuroscience and Advanced Diagnostics (Bi.N.D.), University of Palermo, Palermo, Italy
| | - Marisa De Feo
- Department of Translational Medical Sciences, Università degli Studi della Campania "L. Vanvitelli", Naples, Italy
| | - Alessandro Della Corte
- Department of Translational Medical Sciences, Università degli Studi della Campania "L. Vanvitelli", Naples, Italy
| | - Per Hellstrand
- Department of Experimental Medical Science, Lund University, Lund, Sweden
| | - Lo Persson
- Department of Experimental Medical Science, Lund University, Lund, Sweden
| | - Bengt-Olof Nilsson
- Department of Experimental Medical Science, Lund University, Lund, Sweden.
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54
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Chen Y, Yang C, Mao J, Li H, Ding J, Zhou W. Spermine modified polymeric micelles with pH-sensitive drug release for targeted and enhanced antitumor therapy. RSC Adv 2019; 9:11026-11037. [PMID: 35520220 PMCID: PMC9063029 DOI: 10.1039/c9ra00834a] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 03/22/2019] [Indexed: 11/24/2022] Open
Abstract
Tumor targeting delivery of chemotherapeutic drugs by nanocarriers has been demonstrated to be a promising strategy for cancer therapy with improved therapeutic efficacy. In this work, we reported a novel type of active targeting micelle with pH-responsive drug release by using biodegradable poly(lactide)-poly(2-ethyl-2-oxazoline) di-block copolymers functionalized with spermine (SPM). SPM has been considered as a tumor binding ligand through its specific interaction with the polyamine transport system (PTS), a transmembrane protein overexpressed on various types of cancer cell, while its application in nano-drug delivery systems has rarely been explored. The micelles with spherical shape (∼110 nm) could load hydrophobic paclitaxel (PTX) with high capacity, and release the payload much faster at acidic pH (4.5–6.5) than at pH 7.4. This pH-responsive property assisted the rapid escape of drug from the endo/lysosome after internalization as demonstrated by confocal laser scanning microscopy images using coumarin-6 (Cou-6) as a fluorescent probe. With surface SPM modification, the micelles displayed much higher cellular uptake than SPM lacking micelles in various types of cancer cells, demonstrating tumor targeting ability. The uptake mechanism of SPM modified micelles was explored by flow cytometry, which suggested an energy-consuming sag vesicle-mediated endocytosis pathway. As expected, the micelles displayed significantly enhanced anti-cancer activity. This work demonstrates that SPM modified pH-sensitive micelles may be potential drug delivery vehicles for targeting and effective cancer therapy. Tumor targeting delivery of SPM functionalized micelles via PTS binding and their endocytosis and pH-triggered endo/lysosome drug release for anti-cancer therapy.![]()
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Affiliation(s)
- Yang Chen
- Xiangya School of Pharmaceutical Sciences
- Central South University
- Changsha
- China
| | - Cejun Yang
- Department of Radiology
- The Third Xiangya Hospital
- Central South University
- Changsha
- P. R. China
| | - Juan Mao
- Xiangya School of Pharmaceutical Sciences
- Central South University
- Changsha
- China
| | - Haigang Li
- School of Pharmaceutical Sciences
- Changsha Medical University
- Changsha
- China
| | - Jinsong Ding
- Xiangya School of Pharmaceutical Sciences
- Central South University
- Changsha
- China
| | - Wenhu Zhou
- Xiangya School of Pharmaceutical Sciences
- Central South University
- Changsha
- China
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55
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Beneficial effects of spermidine on cardiovascular health and longevity suggest a cell type-specific import of polyamines by cardiomyocytes. Biochem Soc Trans 2018; 47:265-272. [PMID: 30578348 DOI: 10.1042/bst20180622] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 11/16/2018] [Accepted: 11/21/2018] [Indexed: 01/04/2023]
Abstract
Recent and exciting in vivo studies show that supplementation with the polyamine spermidine (Spd) is cardioprotective and prolongs lifespan in both mice and humans. The mechanisms behind Spd-induced cardioprotection are supposed to involve Spd-evoked stimulation of autophagy, mitophagy and mitochondrial respiration and improved the mechano-elastical function of cardiomyocytes. Although cellular uptake of Spd was not characterized, these results suggest that Spd is imported by the cardiomyocytes and acts intracellularly. In the light of these new and thrilling data, we discuss in the present review cellular polyamine import with a special focus on mechanisms that may be relevant for Spd uptake by electrically excitable cells such as cardiomyocytes.
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56
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Horn N, Møller LB, Nurchi VM, Aaseth J. Chelating principles in Menkes and Wilson diseases: Choosing the right compounds in the right combinations at the right time. J Inorg Biochem 2018; 190:98-112. [PMID: 30384011 DOI: 10.1016/j.jinorgbio.2018.10.009] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 10/06/2018] [Accepted: 10/19/2018] [Indexed: 01/08/2023]
Abstract
Dysregulation of copper homeostasis in humans is primarily found in two genetic diseases of copper transport, Menkes and Wilson diseases, which show symptoms of copper deficiency or overload, respectively. However, both diseases are copper storage disorders despite completely opposite clinical pictures. Clinically, Menkes disease is characterized by copper deficiency secondary to poor loading of copper-requiring enzymes although sufficient body copper. Copper accumulates in non-hepatic tissues, but is deficient in blood, liver, and brain. In contrast, Wilson disease is characterized by symptoms of copper toxicity secondary to accumulation of copper in several organs most notably brain and liver, and a saturated blood copper pool. It is a challenge to correct copper dyshomeostasis in either disease though copper depletion in Menkes disease is most challenging. Both diseases are caused by defective copper export from distinct cells, and we seek to give new angles and guidelines to improve treatment of these two complementary diseases. Therapy of Menkes disease with copper-histidine, thiocarbamate, nitrilotriacetate or lipoic acid is discussed. In Wilson disease combination of a hydrophilic chelator e.g. trientine or dimercaptosuccinate with a brain shuttle e.g. thiomolybdate or lipoate, is discussed. New chelating principles for copper removal or delivery are outlined.
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Affiliation(s)
| | - Lisbeth Birk Møller
- Kennedy Center, Department of Clinical Genetics, Copenhagen University Hospital, Rigshospitalet, Gl. Landevej 7, 2600 Glostrup, Denmark
| | | | - Jan Aaseth
- Innlandet Hospital, Norway; Inland Norway University of Applied Sciences, Elverum, Norway.
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57
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Fernández-Reina A, Urdiales JL, Sánchez-Jiménez F. What We Know and What We Need to Know about Aromatic and Cationic Biogenic Amines in the Gastrointestinal Tract. Foods 2018; 7:E145. [PMID: 30181486 PMCID: PMC6164962 DOI: 10.3390/foods7090145] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 08/22/2018] [Accepted: 08/29/2018] [Indexed: 12/15/2022] Open
Abstract
Biogenic amines derived from basic and aromatic amino acids (B/A-BAs), polyamines, histamine, serotonin, and catecholamines are a group of molecules playing essential roles in many relevant physiological processes, including cell proliferation, immune response, nutrition and reproduction. All these physiological effects involve a variety of tissue-specific cellular receptors and signalling pathways, which conforms to a very complex network that is not yet well-characterized. Strong evidence has proved the importance of this group of molecules in the gastrointestinal context, also playing roles in several pathologies. This work is based on the hypothesis that integration of biomedical information helps to reach new translational actions. Thus, the major aim of this work is to combine scientific knowledge on biomolecules, metabolism and physiology of the main B/A-BAs involved in the pathophysiology of the gastrointestinal tract, in order to point out important gaps in information and other facts deserving further research efforts in order to connect molecular information with pathophysiological observations.
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Affiliation(s)
- Alberto Fernández-Reina
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, 29071 Málaga, Spain.
| | - José Luis Urdiales
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, 29071 Málaga, Spain.
- CIBER de Enfermedades Raras & IBIMA, Instituto de Salud Carlos III, 29010 Málaga, Spain.
| | - Francisca Sánchez-Jiménez
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, 29071 Málaga, Spain.
- CIBER de Enfermedades Raras & IBIMA, Instituto de Salud Carlos III, 29010 Málaga, Spain.
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58
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Lightfoot HL, Hagen T, Cléry A, Allain FHT, Hall J. Control of the polyamine biosynthesis pathway by G 2-quadruplexes. eLife 2018; 7:e36362. [PMID: 30063205 PMCID: PMC6067879 DOI: 10.7554/elife.36362] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 06/13/2018] [Indexed: 12/16/2022] Open
Abstract
G-quadruplexes are naturally-occurring structures found in RNAs and DNAs. Regular RNA G-quadruplexes are highly stable due to stacked planar arrangements connected by short loops. However, reports of irregular quadruplex structures are increasing and recent genome-wide studies suggest that they influence gene expression. We have investigated a grouping of G2-motifs in the UTRs of eight genes involved in polyamine biosynthesis, and concluded that several likely form novel metastable RNA G-quadruplexes. We performed a comprehensive biophysical characterization of their properties, comparing them to a reference G-quadruplex. Using cellular assays, together with polyamine-depleting and quadruplex-stabilizing ligands, we discovered how some of these motifs regulate and sense polyamine levels, creating feedback loops during polyamine biosynthesis. Using high-resolution 1H-NMR spectroscopy, we demonstrated that a long-looped quadruplex in the AZIN1 mRNA co-exists in salt-dependent equilibria with a hairpin structure. This study expands the repertoire of regulatory G-quadruplexes and demonstrates how they act in unison to control metabolite homeostasis.
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Affiliation(s)
- Helen Louise Lightfoot
- Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical SciencesETH ZurichZurichSwitzerland
| | - Timo Hagen
- Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical SciencesETH ZurichZurichSwitzerland
| | - Antoine Cléry
- Department of Biology, Institute of Molecular Biology and BiophysicsETH ZurichZurichSwitzerland
- Biomolecular NMR spectroscopy platformETH ZurichZurichSwitzerland
| | | | - Jonathan Hall
- Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical SciencesETH ZurichZurichSwitzerland
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59
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Smirnova OA, Bartosch B, Zakirova NF, Kochetkov SN, Ivanov AV. Polyamine Metabolism and Oxidative Protein Folding in the ER as ROS-Producing Systems Neglected in Virology. Int J Mol Sci 2018; 19:ijms19041219. [PMID: 29673197 PMCID: PMC5979612 DOI: 10.3390/ijms19041219] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 04/03/2018] [Accepted: 04/11/2018] [Indexed: 12/23/2022] Open
Abstract
Reactive oxygen species (ROS) are produced in various cell compartments by an array of enzymes and processes. An excess of ROS production can be hazardous for normal cell functioning, whereas at normal levels, ROS act as vital regulators of many signal transduction pathways and transcription factors. ROS production is affected by a wide range of viruses. However, to date, the impact of viral infections has been studied only in respect to selected ROS-generating enzymes. The role of several ROS-generating and -scavenging enzymes or cellular systems in viral infections has never been addressed. In this review, we focus on the roles of biogenic polyamines and oxidative protein folding in the endoplasmic reticulum (ER) and their interplay with viruses. Polyamines act as ROS scavengers, however, their catabolism is accompanied by H2O2 production. Hydrogen peroxide is also produced during oxidative protein folding, with ER oxidoreductin 1 (Ero1) being a major source of oxidative equivalents. In addition, Ero1 controls Ca2+ efflux from the ER in response to e.g., ER stress. Here, we briefly summarize the current knowledge on the physiological roles of biogenic polyamines and the role of Ero1 at the ER, and present available data on their interplay with viral infections.
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Affiliation(s)
- Olga A Smirnova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilov str. 32, Moscow 119991, Russia.
| | - Birke Bartosch
- Cancer Research Center Lyon, INSERM U1052 and CNRS 5286, Lyon University, 69003 Lyon, France.
- DevWeCan Laboratories of Excellence Network (Labex), Lyon 69003, France.
| | - Natalia F Zakirova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilov str. 32, Moscow 119991, Russia.
| | - Sergey N Kochetkov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilov str. 32, Moscow 119991, Russia.
| | - Alexander V Ivanov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilov str. 32, Moscow 119991, Russia.
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60
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Cheng F, Fransson LÅ, Mani K. Common traffic routes for imported spermine and endosomal glypican-1-derived heparan sulfate in fibroblasts. Exp Cell Res 2018; 364:133-142. [PMID: 29408503 DOI: 10.1016/j.yexcr.2018.01.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 01/19/2018] [Accepted: 01/20/2018] [Indexed: 11/26/2022]
Abstract
Import of the polyamine spermine from the extracellular environment depends on the presence of cell surface heparan sulfate proteoglycans, such as glypican-1. This proteoglycan is internalized by endocytosis, releases its heparan sulfate chains in endosomes by a nitric oxide-, copper- and amyloid precursor protein-dependent mechanism, then penetrates the membrane and is transported to the nucleus and then to autophagosomes. This process is spontaneous or induced by ascorbate depending on the growth-state of the cell. Here, we have explored possible connections between the heparan sulfate traffic route and spermine uptake and delivery in wild-type and Tg2576 mouse fibroblasts. Cells were examined by deconvolution immunofluorescence microscopy. The antibodies used were specific for spermine, glypican-1-derived heparan sulfate, Rab7, nucleolin and a marker for autophagosomes. Endogenous immunostainable spermine was primarily associated with autophagosomes. When spermine synthesis was inhibited, imported spermine appeared in Rab7-positive endosomes. When ascorbate was added, heparan sulfate and spermine were transported to the nucleus where they colocalized with nucleolin. Spermine also appeared in autophagosomes. In a pulse-chase experiment, heparan sulfate and spermine were first arrested in late endosomes by actinomycin D treatment. During the chase, when arrest was abolished, heparan sulfate and spermine were both transported to the nucleus and targeted nucleolin. In amyloid precursor protein-/--fibroblasts, ascorbate failed to induce release of heparan sulfate and spermine remained in the endosomes. We propose that cell surface glypican-1 carries spermine to the endosomes and that the released heparan sulfate carries spermine across the membrane into the cytosol and then to the nucleus.
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Affiliation(s)
- Fang Cheng
- Department of Experimental Medical Science, Division of Neuroscience, Glycobiology Group, Lund University, Biomedical CenterA13, SE-221 84 Lund, Sweden
| | - Lars-Åke Fransson
- Department of Experimental Medical Science, Division of Neuroscience, Glycobiology Group, Lund University, Biomedical CenterA13, SE-221 84 Lund, Sweden
| | - Katrin Mani
- Department of Experimental Medical Science, Division of Neuroscience, Glycobiology Group, Lund University, Biomedical CenterA13, SE-221 84 Lund, Sweden.
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61
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Mirończuk-Chodakowska I, Witkowska AM, Zujko ME. Endogenous non-enzymatic antioxidants in the human body. Adv Med Sci 2018; 63:68-78. [PMID: 28822266 DOI: 10.1016/j.advms.2017.05.005] [Citation(s) in RCA: 264] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 05/12/2017] [Accepted: 05/25/2017] [Indexed: 02/08/2023]
Abstract
The exposure of cells, tissues and extracellular matrix to harmful reactive species causes a cascade of reactions and induces activation of multiple internal defence mechanisms (enzymatic or non-enzymatic) that provide removal of reactive species and their derivatives. The non-enzymatic antioxidants are represented by molecules characterized by the ability to rapidly inactivate radicals and oxidants. This paper focuses on the major intrinsic non-enzymatic antioxidants, including metal binding proteins (MBPs), glutathione (GSH), uric acid (UA), melatonin (MEL), bilirubin (BIL) and polyamines (PAs).
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62
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Ucal S, Häkkinen MR, Alanne AL, Alhonen L, Vepsäläinen J, Keinänen TA, Hyvönen MT. Controlling of N-alkylpolyamine analogue metabolism by selective deuteration. Biochem J 2018; 475:663-676. [PMID: 29301981 DOI: 10.1042/bcj20170887] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 12/27/2017] [Accepted: 01/03/2018] [Indexed: 01/26/2023]
Abstract
Replacing protium with deuterium is an efficient method to modulate drug metabolism. N-alkylated polyamine analogues are polyamine antimetabolites with proven anticancer efficacy. We have characterized earlier the preferred metabolic routes of N1,N12-diethylspermine (DESpm), N1-benzyl-N12-ethylspermine (BnEtSpm) and N1,N12-dibenzylspermine (DBSpm) by human recombinant spermine oxidase (SMOX) and acetylpolyamine oxidase (APAO). Here, we studied the above analogues, their variably deuterated counterparts and their metabolites as substrates and inhibitors of APAO, SMOX, semicarbazide-sensitive amine oxidase (SSAO), diamine oxidase (DAO) and monoamine oxidases. We found that targeted deuteration efficiently redirected the preferable cleavage site and suppressed reaction rate by APAO and SMOX in vitro We found a three- to six-fold decline in Vmax with moderate variable effect on Km when deuterium was located at the preferred hydrogen abstraction site of the analogue. We also found some of the metabolites to be potent inhibitors of DAO and SSAO. Surprisingly, analogue deuteration did not markedly alter the anti-proliferative efficacy of the drugs in DU145 prostate cancer cells, while in mouse embryonic fibroblasts, which had higher basal APAO and SMOX activities, moderate effect was observed. Interestingly, the anti-proliferative efficacy of the analogues did not correlate with their ability to suppress polyamine biosynthetic enzymes, induce spermidine/spermine-N1-acetyltransferase or deplete intracellular polyamine levels, but correlated with their ability to induce SMOX. Our data show that selective deuteration of N-alkyl polyamine analogues enables metabolic switching, offering the means for selective generation of bioactive metabolites inhibiting, e.g. SSAO and DAO, thus setting a novel basis for in vivo studies of this class of analogues.
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Affiliation(s)
- Sebahat Ucal
- School of Pharmacy, University of Eastern Finland, Biocenter Kuopio, Yliopistonranta 1B, FI-70210 Kuopio, Finland
| | - Merja R Häkkinen
- School of Pharmacy, University of Eastern Finland, Biocenter Kuopio, Yliopistonranta 1B, FI-70210 Kuopio, Finland
| | - Aino-Liisa Alanne
- School of Pharmacy, University of Eastern Finland, Biocenter Kuopio, Yliopistonranta 1B, FI-70210 Kuopio, Finland
| | - Leena Alhonen
- School of Pharmacy, University of Eastern Finland, Biocenter Kuopio, Yliopistonranta 1B, FI-70210 Kuopio, Finland
| | - Jouko Vepsäläinen
- School of Pharmacy, University of Eastern Finland, Biocenter Kuopio, Yliopistonranta 1B, FI-70210 Kuopio, Finland
| | - Tuomo A Keinänen
- School of Pharmacy, University of Eastern Finland, Biocenter Kuopio, Yliopistonranta 1B, FI-70210 Kuopio, Finland
| | - Mervi T Hyvönen
- School of Pharmacy, University of Eastern Finland, Biocenter Kuopio, Yliopistonranta 1B, FI-70210 Kuopio, Finland
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63
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Moré MI, Vandenplas Y. Saccharomyces boulardii CNCM I-745 Improves Intestinal Enzyme Function: A Trophic Effects Review. CLINICAL MEDICINE INSIGHTS. GASTROENTEROLOGY 2018; 11:1179552217752679. [PMID: 29449779 PMCID: PMC5808955 DOI: 10.1177/1179552217752679] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Accepted: 12/17/2017] [Indexed: 12/15/2022]
Abstract
Several properties of the probiotic medicinal yeast Saccharomyces boulardii CNCM I-745 contribute to its efficacy to prevent or treat diarrhoea. Besides immunologic effects, pathogen-binding and anti-toxin effects, as well as positive effects on the microbiota, S boulardii CNCM I-745 also has pronounced effects on digestive enzymes of the brush border membrane, known as trophic effects. The latter are the focus of this review. Literature has been reviewed after searching Medline and PMC databases. All relevant non-clinical and clinical studies are summarized. S. boulardii CNCM I-745 synthesizes and secretes polyamines, which have a role in cell proliferation and differentiation. The administration of polyamines or S. boulardii CNCM I-745 enhances the expression of intestinal digestive enzymes as well as nutrient uptake transporters. The signalling mechanisms leading to enzyme activation are not fully understood. However, polyamines have direct nucleic acid–binding capacity with regulatory impact. S. boulardii CNCM I-745 induces signalling via the mitogen-activated protein kinase pathway. In addition, effects on the phosphatidylinositol-3 kinase (PI3K) pathway have been reported. As an additional direct effect, S. boulardii CNCM I-745 secretes certain enzymes, which enhance nutrient acquisition for the yeast and the host. The increased availability of digestive enzymes seems to be one of the mechanisms by which S. boulardii CNCM I-745 counteracts diarrhoea; however, also people with certain enzyme deficiencies may profit from its administration. More studies are needed to fully understand the mechanisms of trophic activation by the probiotic yeast.
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Affiliation(s)
- Margret I Moré
- analyze & realize GmbH, Department of Consulting and Strategic Innovation, Berlin, Germany
| | - Yvan Vandenplas
- Department of Pediatrics, Vrije Universiteit Brussel, Brussels, Belgium
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Lenis YY, Elmetwally MA, Tang W, Satterfield C, Dunlap K, Wu G, Bazer FW. Functional roles of agmatinase during the peri-implantation period of pregnancy in sheep. Amino Acids 2017; 50:293-308. [PMID: 29196820 DOI: 10.1007/s00726-017-2515-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Accepted: 11/21/2017] [Indexed: 01/15/2023]
Abstract
This study investigated the effect of agmatine (Agm) in proliferation of ovine trophecdoderm cells (oTr1) as well as the importance of the arginine decarboxylase (ADC) and agmatinase (AGMAT) alternative pathway for synthesis of polyamines in ovine conceptuses during the peri-implantation period of pregnancy. Morpholino antisense oligonucleotides (MAOs) were used to inhibit translation of mRNAs for ODC1 alone, AGMAT alone, and their combination. Rambouillet ewes (N = 50) were assigned randomly to the following treatments on Day 8 of pregnancy: MAO control (n = 10); MAO-ODC1 (n = 8); MAO-ADC (n = 6); MAO-ODC1:MAO-ADC (n = 9); or MAO-ODC1:MAO-AGMAT (n = 9). Ewes were ovario-hysterectomized on Day 16 of pregnancy to obtain uterine flushings, uterine endometrium, and conceptus tissues. Inhibition of translation of both ODC1 and AGMAT resulted in 22% of ewes having morphologically and functionally normal (elongated and healthy) conceptuses designated MAO-ODC1:MAO-AGMAT (A). But, 78% of the MAO-ODC1:MAO-AGMAT ewes had morphologically and functionally abnormal (not elongated and fragmented) conceptuses designated MAO-ODC1:MAO-AGMAT (B). The pregnancy rate was less (22%; P < 0.05) for MAO-ODC1:MAO-AGMAT ewes than for MAO-control (80%), MAO-ODC1 (75%), MAO-ADC (84%), and MAO-ODC1:MAO-ADC (44%) ewes. Moreover, inhibition of translational of both ODC1 and AGMAT mRNAs increased expression of ADC, SLC22A1, SLC22A2, and SLC22A3 mRNAs, as well as abundances of agmatine, putrescine, spermindine, and spermine in conceptus tissue. However, MAO-ODC1:AGMAT(B) ewes had greater abundances of agmatine, putrescine, and spermidine and reduced amounts of spermine in uterine flushes. Thus, in vivo knockdown of translation of ODC1 and AGMAT mRNAs increased expression of genes for the synthesis and transport of polyamines in ovine conceptuses during the peri-implantation period of pregnancy.
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Affiliation(s)
- Yasser Y Lenis
- Department of Animal Science, Texas A&M University, College Station, TX, 77843-2471, USA.,Center for Animal Biotechnology and Genomics, Texas A&M University, College Station, TX, 77843, USA.,Centauro Research Group, School of Veterinary Medicine, Faculty of Agrarian Science, Universidad de Antioquia, Calle 70 No. 52-21, Medellín, Colombia.,Faculty of Agricultural Sciences, UDCA, Calle 222 No. 55-37, Bogota, Colombia
| | - Mohammed A Elmetwally
- Department of Animal Science, Texas A&M University, College Station, TX, 77843-2471, USA.,Center for Animal Biotechnology and Genomics, Texas A&M University, College Station, TX, 77843, USA.,Faculty of Veterinary Medicine, Department of Theriogenology, Mansoura University, Mansoura, 35516, Egypt
| | - Wanjin Tang
- Department of Animal Science, Texas A&M University, College Station, TX, 77843-2471, USA.,Center for Animal Biotechnology and Genomics, Texas A&M University, College Station, TX, 77843, USA
| | - Carey Satterfield
- Department of Animal Science, Texas A&M University, College Station, TX, 77843-2471, USA
| | - Kathrin Dunlap
- Department of Animal Science, Texas A&M University, College Station, TX, 77843-2471, USA
| | - Guoyao Wu
- Department of Animal Science, Texas A&M University, College Station, TX, 77843-2471, USA.,Center for Animal Biotechnology and Genomics, Texas A&M University, College Station, TX, 77843, USA
| | - Fuller W Bazer
- Department of Animal Science, Texas A&M University, College Station, TX, 77843-2471, USA. .,Center for Animal Biotechnology and Genomics, Texas A&M University, College Station, TX, 77843, USA.
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65
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Polyamine concentration is increased in thoracic ascending aorta of patients with bicuspid aortic valve. Heart Vessels 2017; 33:327-339. [DOI: 10.1007/s00380-017-1087-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 11/13/2017] [Indexed: 12/26/2022]
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66
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Li C, Brazill JM, Liu S, Bello C, Zhu Y, Morimoto M, Cascio L, Pauly R, Diaz-Perez Z, Malicdan MCV, Wang H, Boccuto L, Schwartz CE, Gahl WA, Boerkoel CF, Zhai RG. Spermine synthase deficiency causes lysosomal dysfunction and oxidative stress in models of Snyder-Robinson syndrome. Nat Commun 2017; 8:1257. [PMID: 29097652 PMCID: PMC5668419 DOI: 10.1038/s41467-017-01289-7] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 09/06/2017] [Indexed: 02/07/2023] Open
Abstract
Polyamines are tightly regulated polycations that are essential for life. Loss-of-function mutations in spermine synthase (SMS), a polyamine biosynthesis enzyme, cause Snyder-Robinson syndrome (SRS), an X-linked intellectual disability syndrome; however, little is known about the neuropathogenesis of the disease. Here we show that loss of dSms in Drosophila recapitulates the pathological polyamine imbalance of SRS and causes survival defects and synaptic degeneration. SMS deficiency leads to excessive spermidine catabolism, which generates toxic metabolites that cause lysosomal defects and oxidative stress. Consequently, autophagy-lysosome flux and mitochondrial function are compromised in the Drosophila nervous system and SRS patient cells. Importantly, oxidative stress caused by loss of SMS is suppressed by genetically or pharmacologically enhanced antioxidant activity. Our findings uncover some of the mechanisms underlying the pathological consequences of abnormal polyamine metabolism in the nervous system and may provide potential therapeutic targets for treating SRS and other polyamine-associated neurological disorders.
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Affiliation(s)
- Chong Li
- Department of Molecular and Cellular Pharmacology, University of Miami Miller School of Medicine, Miami, FL, 33136, USA
| | - Jennifer M Brazill
- Department of Molecular and Cellular Pharmacology, University of Miami Miller School of Medicine, Miami, FL, 33136, USA
| | - Sha Liu
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong, 264005, China
| | - Christofer Bello
- Department of Molecular and Cellular Pharmacology, University of Miami Miller School of Medicine, Miami, FL, 33136, USA
| | - Yi Zhu
- Department of Molecular and Cellular Pharmacology, University of Miami Miller School of Medicine, Miami, FL, 33136, USA
| | - Marie Morimoto
- NIH Undiagnosed Diseases Program, National Human Genome Research Institute, NIH, Bethesda, MD, 20892, USA
- Section of Human Biochemical Genetics, Medical Genetics Branch, National Human Genome Research Institute, NIH, Bethesda, MD, 20892, USA
| | - Lauren Cascio
- JC Self Research Institute, Greenwood Genetic Center, Greenwood, SC, 29646, USA
| | - Rini Pauly
- JC Self Research Institute, Greenwood Genetic Center, Greenwood, SC, 29646, USA
| | - Zoraida Diaz-Perez
- Department of Molecular and Cellular Pharmacology, University of Miami Miller School of Medicine, Miami, FL, 33136, USA
| | - May Christine V Malicdan
- NIH Undiagnosed Diseases Program, National Human Genome Research Institute, NIH, Bethesda, MD, 20892, USA
- Section of Human Biochemical Genetics, Medical Genetics Branch, National Human Genome Research Institute, NIH, Bethesda, MD, 20892, USA
- Office of the Clinical Director, National Human Genome Research Institute, NIH, Bethesda, MD, 20892, USA
| | - Hongbo Wang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong, 264005, China
| | - Luigi Boccuto
- JC Self Research Institute, Greenwood Genetic Center, Greenwood, SC, 29646, USA
| | - Charles E Schwartz
- JC Self Research Institute, Greenwood Genetic Center, Greenwood, SC, 29646, USA
| | - William A Gahl
- NIH Undiagnosed Diseases Program, National Human Genome Research Institute, NIH, Bethesda, MD, 20892, USA
- Section of Human Biochemical Genetics, Medical Genetics Branch, National Human Genome Research Institute, NIH, Bethesda, MD, 20892, USA
- Office of the Clinical Director, National Human Genome Research Institute, NIH, Bethesda, MD, 20892, USA
| | - Cornelius F Boerkoel
- NIH Undiagnosed Diseases Program, National Human Genome Research Institute, NIH, Bethesda, MD, 20892, USA
- Section of Human Biochemical Genetics, Medical Genetics Branch, National Human Genome Research Institute, NIH, Bethesda, MD, 20892, USA
- Department of Medical Genetics, University of British Columbia, Vancouver, BC, V6H 3N1, Canada
| | - R Grace Zhai
- Department of Molecular and Cellular Pharmacology, University of Miami Miller School of Medicine, Miami, FL, 33136, USA.
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong, 264005, China.
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Tang J, Li J, Li G, Zhang H, Wang L, Li D, Ding J. Spermidine-mediated poly(lactic- co-glycolic acid) nanoparticles containing fluorofenidone for the treatment of idiopathic pulmonary fibrosis. Int J Nanomedicine 2017; 12:6687-6704. [PMID: 28932114 PMCID: PMC5598552 DOI: 10.2147/ijn.s140569] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Idiopathic pulmonary fibrosis is a progressive, fatal lung disease with poor survival. The advances made in deciphering this disease have led to the approval of different antifibrotic molecules, such as pirfenidone and nintedanib. An increasing number of studies with particles (liposomes, nanoparticles [NPs], microspheres, nanopolymersomes, and nanoliposomes) modified with different functional groups have demonstrated improvement in lung-targeted drug delivery. In the present study, we prepared, characterized, and evaluated spermidine (Spd)-modified poly(lactic-co-glycolic acid) (PLGA) NPs as carriers for fluorofenidone (AKF) to improve the antifibrotic efficacy of this drug in the lung. Spd-AKF-PLGA NPs were prepared and functionalized by modified solvent evaporation with Spd and polyethylene glycol (PEG)-PLGA groups. The size of Spd-AKF-PLGA NPs was 172.5±4.3 nm. AKF release from NPs was shown to fit the Higuchi model. A549 cellular uptake of an Spd-coumarin (Cou)-6-PLGA NP group was found to be almost twice as high as that of the Cou-6-PLGA NP group. Free Spd and difluoromethylornithine (DFMO) were preincubated in A549 cells to prove uptake of Spd-Cou-6-PLGA NPs via a polyamine-transport system. As a result, the uptake of Spd-Cou-6-PLGA NPs significantly decreased with increased Spd concentrations in incubation. At higher Spd concentrations of 50 and 500 µM, uptake of Spd-Cou-6-PLGA NPs reduced 0.34- and 0.49-fold from that without Spd pretreatment. After pretreatment with DFMO for 36 hours, cellular uptake of Spd-Cou-6-PLGA NPs reached 1.26-fold compared to the untreated DFMO group. In a biodistribution study, the drug-targeting index of Spd-AKF-PLGA NPs in the lung was 3.62- and 4.66-fold that of AKF-PLGA NPs and AKF solution, respectively. This suggested that Spd-AKF-PLGA NPs accumulated effectively in the lung. Lung-histopathology changes and collagen deposition were observed by H&E staining and Masson staining in an efficacy study. In the Spd-AKF-PLGA NP group, damage was further improved compared to the AKF-PLGA NP group and AKF-solution group. The results indicated that Spd-AKF-PLGA NPs are able to be effective nanocarriers for anti-pulmonary fibrosis therapy.
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Affiliation(s)
- Jing Tang
- School of Pharmaceutical Sciences, Changsha Medical University
| | - Jianming Li
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha
| | - Guo Li
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha
| | - Haitao Zhang
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha
| | - Ling Wang
- Key Laboratory of Drug Targeting and Drug Delivery Systems, West China School of Pharmacy, Sichuan University, Chengdu
| | - Dai Li
- Xiangya Hospital, Central South University, Changsha, China
| | - Jinsong Ding
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha
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68
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Cassella L, Salvetti A, Iacopetti P, Ippolito C, Ghezzani C, Gimenez G, Ghigo E, Rossi L. Putrescine independent wound response phenotype is produced by ODC-like RNAi in planarians. Sci Rep 2017; 7:9736. [PMID: 28851936 PMCID: PMC5574924 DOI: 10.1038/s41598-017-09567-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 07/26/2017] [Indexed: 01/18/2023] Open
Abstract
Despite increasing evidence indicates polyamines as a convergence point for signaling pathways, including cell growth and differentiation, a unifying concept to interpret their role is still missing. The activity of ornithine decarboxylase (ODC), the rate-limiting enzyme in polyamine biosynthesis, is tightly regulated by a complex molecular machinery, and the demonstration of the existence of multiple ODC paralogs, lacking decarboxylation activity, suggests additional layers of complexity to the intricate ODC regulatory pathway. Because of their extraordinary regenerative abilities and abundance of stem cells, planarians have potential to contribute to our understanding of polyamine function in an in vivo context. We undertook a study on ODC function in planarians and we found six planarian ODCs (ODC1-6). Five out of six ODC homologs carry substitutions of key aminoacids for enzymatic activity, which makes them theoretically unable to decarboxylate ornithine. Silencing of ODC5 and 6 produced a complex phenotype, by prompting animals to an aberrant response, following chronic injury without tissue removal. Phenotype is neither rescued by putrescine, nor mimicked by difluoromethylornithine treatment. Moreover, the co-silencing of other genes of the ODC regulatory pathway did not modulate phenotype outcome or severity, thus suggesting that the function/s of these ODC-like proteins might be unrelated to decarboxylase activity and putrescine production.
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Affiliation(s)
- Lucia Cassella
- Department of Clinical and Experimental Medicine, University of Pisa, via Volta 4, 56126, Pisa, Italy
| | - Alessandra Salvetti
- Department of Clinical and Experimental Medicine, University of Pisa, via Volta 4, 56126, Pisa, Italy
| | - Paola Iacopetti
- Department of Clinical and Experimental Medicine, University of Pisa, via Volta 4, 56126, Pisa, Italy
| | - Chiara Ippolito
- Department of Clinical and Experimental Medicine, University of Pisa, via Volta 4, 56126, Pisa, Italy
| | - Claudio Ghezzani
- Department of Clinical and Experimental Medicine, University of Pisa, via Volta 4, 56126, Pisa, Italy
| | - Gregory Gimenez
- Otago Genomics & Bioinformatics Facility, Department of Biochemistry, University of Otago, PO Box 56, 710 Cumberland Street, Dunedin, 9054, New Zealand
| | - Eric Ghigo
- CNRS UMR 7278, IRD198, INSERM U1095, APHM, Institut Hospitalier Universitaire Méditerranée-Infection, Aix-Marseille Université, 19-21 Bd Jean Moulin, 13385, Marseille Cedex 05, France
| | - Leonardo Rossi
- Department of Clinical and Experimental Medicine, University of Pisa, via Volta 4, 56126, Pisa, Italy.
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69
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Abstract
Immune cell function and fate are intimately linked to engagement of metabolic pathways. The contribution of core metabolic pathways to immune cell bioenergetics has been vigorously investigated in recent years. However, precisely how other peripheral metabolic pathways support immune cells beyond energy generation is less well understood. Here we survey the literature and highlight recent advances in our understanding of several ancillary metabolic pathways and how they support processes beyond ATP production and ultimately contribute to protective immunity.
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Affiliation(s)
- Daniel J Puleston
- Department of Immunometabolism, Max Planck Institute of Immunobiology and Epigenetics, Stübeweg 51, Freiburg 79108, Germany; Nuffield Department of Orthopedics, Rheumatology, and Musculoskeletal Diseases, The Kennedy Institute of Rheumatology, University of Oxford, Roosevelt Drive, Oxford OX3 7FY, UK
| | - Matteo Villa
- Department of Immunometabolism, Max Planck Institute of Immunobiology and Epigenetics, Stübeweg 51, Freiburg 79108, Germany
| | - Erika L Pearce
- Department of Immunometabolism, Max Planck Institute of Immunobiology and Epigenetics, Stübeweg 51, Freiburg 79108, Germany.
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70
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SLC3A2 is upregulated in human osteosarcoma and promotes tumor growth through the PI3K/Akt signaling pathway. Oncol Rep 2017; 37:2575-2582. [PMID: 28350098 PMCID: PMC5428444 DOI: 10.3892/or.2017.5530] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2016] [Accepted: 11/10/2016] [Indexed: 01/06/2023] Open
Abstract
Growing evidence indicates that SLC3A2 (solute carrier family 3 member 2) is upregulated and correlates with tumor growth in multiple types of cancers, while the role of SLC3A2 in human osteosarcoma (OS) is rarely discussed. Thus, the aim of the present study was to demonstrate the expression of SLC3A2 in human osteosarcoma and reveal its biological function and the underlying mechanisms. RT-PCR, western blot analysis and immunohistochemistry (IHC) were used to assess the expression of SLC3A2 in OS samples and cell lines. Cell cycle, Cell Counting Kit-8 (CCK-8) and colony formation assays were used to test the cell survival capacity. To investigate the potential mechanism by which SLC3A2 regulates OS growth, we used a slide-based antibody array. We demonstrated that SLC3A2 was upregulated in OS cell lines as well as OS tissues. High expression of SLC3A2 was correlated with clinical stage and tumor size in OS. Reduced expression of SLC3A2 inhibited OS cell proliferation through G2/M phase arrest. Most importantly, we found that SLC3A2 may regulate OS growth through the PI3K/Akt signaling pathway. In conclusion, SLC3A2 is upregulated in OS and plays a crucial role in tumor growth. Targeting SLC3A2 may provide a new therapeutic strategy for OS.
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71
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Skatchkov SN, Antonov SM, Eaton MJ. Glia and glial polyamines. Role in brain function in health and disease. BIOCHEMISTRY MOSCOW SUPPLEMENT SERIES A-MEMBRANE AND CELL BIOLOGY 2016. [DOI: 10.1134/s1990747816010116] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Hamon L, Savarin P, Pastré D. Polyamine signal through gap junctions: A key regulator of proliferation and gap-junction organization in mammalian tissues? Bioessays 2016; 38:498-507. [DOI: 10.1002/bies.201500195] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Loic Hamon
- Laboratoire Structure-Activité des Biomolécules Normales et Pathologiques; INSERM U1204 and Université Evry-Val d'Essonne; Evry France
| | - Philippe Savarin
- Centre National de Recherche Scientifique (CNRS), Equipe Spectroscopie des Biomolécules et des Milieux Biologiques (SBMB); Université Paris 13, Sorbonne Paris Cité, Laboratoire Chimie, Structures, Propriétés de Biomatériaux et d'Agents Thérapeutiques (CSPBAT), Unité Mixte de Recherche (UMR) 7244; Bobigny France
| | - David Pastré
- Laboratoire Structure-Activité des Biomolécules Normales et Pathologiques; INSERM U1204 and Université Evry-Val d'Essonne; Evry France
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73
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Guerra GP, Rubin MA, Mello CF. Modulation of learning and memory by natural polyamines. Pharmacol Res 2016; 112:99-118. [PMID: 27015893 DOI: 10.1016/j.phrs.2016.03.023] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2016] [Revised: 03/09/2016] [Accepted: 03/11/2016] [Indexed: 01/08/2023]
Abstract
Spermine and spermidine are natural polyamines that are produced mainly via decarboxylation of l-ornithine and the sequential transfer of aminopropyl groups from S-adenosylmethionine to putrescine by spermidine synthase and spermine synthase. Spermine and spermidine interact with intracellular and extracellular acidic residues of different nature, including nucleic acids, phospholipids, acidic proteins, carboxyl- and sulfate-containing polysaccharides. Therefore, multiple actions have been suggested for these polycations, including modulation of the activity of ionic channels, protein synthesis, protein kinases, and cell proliferation/death, within others. In this review we summarize these neurochemical/neurophysiological/morphological findings, particularly those that have been implicated in the improving and deleterious effects of spermine and spermidine on learning and memory of naïve animals in shock-motivated and nonshock-motivated tasks, from a historical perspective. The interaction with the opioid system, the facilitation and disruption of morphine-induced reward and the effect of polyamines and putative polyamine antagonists on animal models of cognitive diseases, such as Alzheimer's, Huntington, acute neuroinflammation and brain trauma are also reviewed and discussed. The increased production of polyamines in Alzheimer's disease and the biphasic nature of the effects of polyamines on memory and on the NMDA receptor are also considered. In light of the current literature on polyamines, which include the description of an inborn error of the metabolism characterized by mild-to moderate mental retardation and polyamine metabolism alterations in suicide completers, we can anticipate that polyamine targets may be important for the development of novel strategies and approaches for understanding the etiopathogenesis of important central disorders and their pharmacological treatment.
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Affiliation(s)
- Gustavo Petri Guerra
- Department of Food Technology, Federal Technological University of Paraná, Campus Medianeira, Medianeira, PR 85884-000, Brazil
| | - Maribel Antonello Rubin
- Department of Biochemistry, Center of Exact and Natural Sciences, Federal University of Santa Maria (UFSM), Santa Maria, RS 97105-900, Brazil.
| | - Carlos Fernando Mello
- Department of Physiology and Pharmacology, Center of Health Sciences, Federal University of Santa Maria (UFSM), Santa Maria, RS 97105-900, Brazil.
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Wu L, He LQ, Cui ZJ, Liu G, Yao K, Wu F, Li J, Li TJ. Effects of reducing dietary protein on the expression of nutrition sensing genes (amino acid transporters) in weaned piglets. J Zhejiang Univ Sci B 2016; 16:496-502. [PMID: 26055911 DOI: 10.1631/jzus.b1400259] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The effects of crude protein (CP) levels in the diet on the mRNA expression of amino acid (AA) transporters were studied in a 45-d trial. Eighteen piglets with an initial body weight (BW) of 9.57 kg were assigned to three groups (14%, 17%, and 20% CP in the diet) in a completely randomized design (six replicates per treatment). Diets were supplemented with crystalline AA to achieve equal standardized ileal digestible contents of Lys, Met plus Cys, Thr, and Trp, and were provided ad libitum. After 45 d, all piglets were slaughtered to collect small intestine samples. Compared with the values in the 14% CP group, the expressions of ASCT2, 4F2hc, and ATB(0) mRNA in the jejunum were increased by 23.00%, 12.00%, 6.00% and 48.00%, 47.00%, 56.00% in the 17% and 20% CP groups, respectively. These results indicate that a 14% CP diet supplemented with crystalline AA may not transport enough AA into the body and maintain growth performance of piglets. However, a reduction of dietary 17% CP may reduce the excretion of nitrogen into the environment while supporting the development of piglets. Therefore, the 17% CP level is more suitable than 14% CP level.
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Affiliation(s)
- Li Wu
- Research Center of Healthy Breeding of Livestock and Poultry, Hunan Engineering and Research Center of Animal and Poultry Science, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
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75
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Zhang Q, Gou W, Wang X, Zhang Y, Ma J, Zhang H, Zhang Y, Zhang H. Genome Resequencing Identifies Unique Adaptations of Tibetan Chickens to Hypoxia and High-Dose Ultraviolet Radiation in High-Altitude Environments. Genome Biol Evol 2016; 8:765-76. [PMID: 26907498 PMCID: PMC4824011 DOI: 10.1093/gbe/evw032] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Tibetan chicken, unlike their lowland counterparts, exhibit specific adaptations to high-altitude conditions. The genetic mechanisms of such adaptations in highland chickens were determined by resequencing the genomes of four highland (Tibetan and Lhasa White) and four lowland (White Leghorn, Lindian, and Chahua) chicken populations. Our results showed an evident genetic admixture in Tibetan chickens, suggesting a history of introgression from lowland gene pools. Genes showing positive selection in highland populations were related to cardiovascular and respiratory system development, DNA repair, response to radiation, inflammation, and immune responses, indicating a strong adaptation to oxygen scarcity and high-intensity solar radiation. The distribution of allele frequencies of nonsynonymous single nucleotide polymorphisms between highland and lowland populations was analyzed using chi-square test, which showed that several differentially distributed genes with missense mutations were enriched in several functional categories, especially in blood vessel development and adaptations to hypoxia and intense radiation. RNA sequencing revealed that several differentially expressed genes were enriched in gene ontology terms related to blood vessel and respiratory system development. Several candidate genes involved in the development of cardiorespiratory system (FGFR1, CTGF, ADAM9, JPH2, SATB1, BMP4, LOX, LPR, ANGPTL4, and HYAL1), inflammation and immune responses (AIRE, MYO1F, ZAP70, DDX60, CCL19, CD47, JSC, and FAS), DNA repair, and responses to radiation (VCP, ASH2L, and FANCG) were identified to play key roles in the adaptation to high-altitude conditions. Our data provide new insights into the unique adaptations of highland animals to extreme environments.
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Affiliation(s)
- Qian Zhang
- National Engineering Laboratory for Animal Breeding, China Agricultural University, Beijing, People's Republic of China
| | - Wenyu Gou
- National Engineering Laboratory for Animal Breeding, China Agricultural University, Beijing, People's Republic of China
| | - Xiaotong Wang
- School of Agriculture, Ludong University, Yantai, China
| | - Yawen Zhang
- National Engineering Laboratory for Animal Breeding, China Agricultural University, Beijing, People's Republic of China
| | - Jun Ma
- National Engineering Laboratory for Animal Breeding, China Agricultural University, Beijing, People's Republic of China
| | - Hongliang Zhang
- National Engineering Laboratory for Animal Breeding, China Agricultural University, Beijing, People's Republic of China
| | - Ying Zhang
- National Engineering Laboratory for Animal Breeding, China Agricultural University, Beijing, People's Republic of China
| | - Hao Zhang
- National Engineering Laboratory for Animal Breeding, China Agricultural University, Beijing, People's Republic of China
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76
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Grossi M, Phanstiel O, Rippe C, Swärd K, Alajbegovic A, Albinsson S, Forte A, Persson L, Hellstrand P, Nilsson BO. Inhibition of Polyamine Uptake Potentiates the Anti-Proliferative Effect of Polyamine Synthesis Inhibition and Preserves the Contractile Phenotype of Vascular Smooth Muscle Cells. J Cell Physiol 2015; 231:1334-42. [PMID: 26529275 DOI: 10.1002/jcp.25236] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 11/02/2015] [Indexed: 12/29/2022]
Abstract
Increased vascular smooth muscle cell (VSMC) proliferation is a factor in atherosclerosis and injury-induced arterial (re) stenosis. Inhibition of polyamine synthesis by α-difluoro-methylornithine (DFMO), an irreversible inhibitor of ornithine decarboxylase, attenuates VSMC proliferation with high sensitivity and specificity. However, cells can escape polyamine synthesis blockade by importing polyamines from the environment. To address this issue, polyamine transport inhibitors (PTIs) have been developed. We investigated the effects of the novel trimer44NMe (PTI-1) alone and in combination with DFMO on VSMC polyamine uptake, proliferation and phenotype regulation. PTI-1 efficiently inhibited polyamine uptake in primary mouse aortic and human coronary VSMCs in the absence as well as in the presence of DFMO. Interestingly, culture with DFMO for 2 days substantially (>95%) reduced putrescine (Put) and spermidine (Spd) contents without any effect on proliferation. Culture with PTI-1 alone had no effect on either polyamine levels or proliferation rate, but the combination of both treatments reduced Put and Spd levels below the detection limit and inhibited proliferation. Treatment with DFMO for a longer time period (4 days) reduced Put and Spd below their detection limits and reduced proliferation, showing that only a small pool of polyamines is needed to sustain VSMC proliferation. Inhibited proliferation by polyamine depletion was associated with maintained expression of contractile smooth marker genes. In cultured intact mouse aorta, PTI-1 potentiated the DFMO-induced inhibition of cell proliferation. The combination of endogenous polyamine synthesis inhibition with uptake blockade is thus a viable approach for targeting unwanted vascular cell proliferation in vivo, including vascular restenosis.
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Affiliation(s)
- Mario Grossi
- Department of Experimental Medical Science, Lund University, Sweden
| | - Otto Phanstiel
- Department of Medical Education, University of Central Florida, Orlando, Florida
| | - Catarina Rippe
- Department of Experimental Medical Science, Lund University, Sweden
| | - Karl Swärd
- Department of Experimental Medical Science, Lund University, Sweden
| | - Azra Alajbegovic
- Department of Experimental Medical Science, Lund University, Sweden
| | | | - Amalia Forte
- Department of Experimental Medicine, Second University of Naples, Italy
| | - Lo Persson
- Department of Experimental Medical Science, Lund University, Sweden
| | - Per Hellstrand
- Department of Experimental Medical Science, Lund University, Sweden
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77
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Barilli A, Rotoli BM, Visigalli R, Ingoglia F, Cirlini M, Prandi B, Dall'Asta V. Gliadin-mediated production of polyamines by RAW264.7 macrophages modulates intestinal epithelial permeability in vitro. Biochim Biophys Acta Mol Basis Dis 2015; 1852:1779-86. [PMID: 26047680 DOI: 10.1016/j.bbadis.2015.06.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 04/28/2015] [Accepted: 06/01/2015] [Indexed: 01/22/2023]
Abstract
Celiac disease (CD) is an immune-mediated enteropathy sustained by dietary gluten in susceptible individuals, and characterized by a complex interplay between adaptive and innate responses against gluten peptides (PTG). In a recent contribution we have demonstrated that the treatment with PTG induces the expression and activity of arginase in both murine macrophages and human monocytes from healthy subjects, thus suggesting a role for arginine and its metabolites in gluten-triggered response of these cells. Here we further explore this field, by addressing the effects of PTG on polyamine synthesis and release in murine RAW264.7 macrophages, and how they affect epithelial permeability of Caco-2 monolayers. Results obtained show a massive production and release of putrescine by macrophages upon incubation with gluten peptides; this, in turn, causes a decrease in TEER in epithelial cells, indicating that PTG-driven secretion of polyamines by macrophages has a role in the modulation of intestinal permeability in vitro. At a molecular level, putrescine production appears referable to the activation of C/EBPβ transcription factor, which is known to be responsible for arginase induction in activated macrophages and is a crucial mediator of inflammation. Whether these pathways are stimulated also in vivo deserves to be further investigated, as well as their role in gluten-driven cellular and intestinal defects typical of CD patients.
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Affiliation(s)
- Amelia Barilli
- Dipartimento di Scienze Biomediche, Biotecnologiche e Traslazionali, SBiBiT, Università degli Studi di Parma, Via Volturno 39, 43125 Parma, Italy
| | - Bianca Maria Rotoli
- Dipartimento di Scienze Biomediche, Biotecnologiche e Traslazionali, SBiBiT, Università degli Studi di Parma, Via Volturno 39, 43125 Parma, Italy
| | - Rossana Visigalli
- Dipartimento di Scienze Biomediche, Biotecnologiche e Traslazionali, SBiBiT, Università degli Studi di Parma, Via Volturno 39, 43125 Parma, Italy
| | - Filippo Ingoglia
- Dipartimento di Scienze Biomediche, Biotecnologiche e Traslazionali, SBiBiT, Università degli Studi di Parma, Via Volturno 39, 43125 Parma, Italy
| | - Martina Cirlini
- Dipartimento di Scienze degli Alimenti, Università degli Studi di Parma, Parco Area delle Scienze 49/A, 43124 Parma, Italy
| | - Barbara Prandi
- Dipartimento di Scienze degli Alimenti, Università degli Studi di Parma, Parco Area delle Scienze 49/A, 43124 Parma, Italy
| | - Valeria Dall'Asta
- Dipartimento di Scienze Biomediche, Biotecnologiche e Traslazionali, SBiBiT, Università degli Studi di Parma, Via Volturno 39, 43125 Parma, Italy.
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78
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Abstract
This review focuses on the roles of glia and polyamines (PAs) in brain function and dysfunction, highlighting how PAs are one of the principal differences between glia and neurons. The novel role of PAs, such as putrescine, spermidine, and spermine and their precursors and derivatives, is discussed. However, PAs have not yet been a focus of much glial research. They affect many neuronal and glial receptors, channels, and transporters. They are therefore key elements in the development of many diseases and syndromes, thus forming the rationale for PA-focused and glia-focused therapy for these conditions.
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Affiliation(s)
- Serguei N Skatchkov
- Department of Biochemistry, School of Medicine, Universidad, Central del Caribe, PO Box 60-327, Bayamón, PR 00960-6032, USA; Department of Physiology, School of Medicine, Universidad, Central del Caribe, PO Box 60-327, Bayamón, PR 00960-6032, USA.
| | - Michel A Woodbury-Fariña
- Department of Psychiatry, University of Puerto Rico School of Medicine, 307 Calle Eleonor Roosevelt, San Juan, PR 00918-2720, USA
| | - Misty Eaton
- Department of Biochemistry, School of Medicine, Universidad, Central del Caribe, PO Box 60-327, Bayamón, PR 00960-6032, USA
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79
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Grossi M, Rippe C, Sathanoori R, Swärd K, Forte A, Erlinge D, Persson L, Hellstrand P, Nilsson BO. Vascular smooth muscle cell proliferation depends on caveolin-1-regulated polyamine uptake. Biosci Rep 2014; 34:e00153. [PMID: 25301005 PMCID: PMC4240025 DOI: 10.1042/bsr20140140] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Accepted: 10/09/2014] [Indexed: 12/11/2022] Open
Abstract
Much evidence highlights the importance of polyamines for VSMC (vascular smooth muscle cell) proliferation and migration. Cav-1 (caveolin-1) was recently reported to regulate polyamine uptake in intestinal epithelial cells. The aim of the present study was to assess the importance of Cav-1 for VSMC polyamine uptake and its impact on cell proliferation and migration. Cav-1 KO (knockout) mouse aortic cells showed increased polyamine uptake and elevated proliferation and migration compared with WT (wild-type) cells. Both Cav-1 KO and WT cells expressed the smooth muscle differentiation markers SM22 and calponin. Cell-cycle phase distribution analysis revealed a higher proportion of Cav-1 KO than WT cells in the S phase. Cav-1 KO cells were hyper-proliferative in the presence but not in the absence of extracellular polyamines, and, moreover, supplementation with exogenous polyamines promoted proliferation in Cav-1 KO but not in WT cells. Expression of the solute carrier transporters Slc7a1 and Slc43a1 was higher in Cav-1 KO than in WT cells. ODC (ornithine decarboxylase) protein and mRNA expression as well as ODC activity were similar in Cav-1 KO and WT cells showing unaltered synthesis of polyamines in Cav-1 KO cells. Cav-1 was reduced in migrating cells in vitro and in carotid lesions in vivo. Our data show that Cav-1 negatively regulates VSMC polyamine uptake and that the proliferative advantage of Cav-1 KO cells is critically dependent on polyamine uptake. We provide proof-of-principle for targeting Cav-1-regulated polyamine uptake as a strategy to fight unwanted VSMC proliferation as observed in restenosis.
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Key Words
- caveolin-1
- cell cycle
- ornithine decarboxylase
- polyamine transporter
- polyamine
- vascular smooth muscle cell
- asmc, aortic smooth muscle cell
- cav-1, caveolin-1
- cea, carotid endarterectomy
- dfmo, difluoromethylornithine
- dmem, dulbecco’s modified eagle’s medium
- hbss, hanks balanced salt solution
- [3h]put, [3h]putrescine
- hrp, horseradish peroxidise
- [3h]spd, [3h]spermidine
- hsp90, heat-shock protein 90
- ko, knockout
- odc, ornithine decarboxylase
- pi, propidium iodide
- qrt-pcr, quantitative real-time pcr
- vsmc, vascular smooth muscle cell
- wt, wild-type
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MESH Headings
- Amino Acid Transport Systems, Basic/genetics
- Amino Acid Transport Systems, Basic/metabolism
- Animals
- Blotting, Western
- Calcium-Binding Proteins/metabolism
- Carotid Arteries/metabolism
- Carotid Arteries/surgery
- Caveolin 1/genetics
- Caveolin 1/metabolism
- Cell Movement
- Cell Proliferation
- Cells, Cultured
- DNA/biosynthesis
- Gene Expression
- Immunohistochemistry
- Mice, Inbred C57BL
- Mice, Knockout
- Microfilament Proteins/metabolism
- Muscle Proteins/metabolism
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/metabolism
- Myocytes, Smooth Muscle/drug effects
- Myocytes, Smooth Muscle/metabolism
- Ornithine Decarboxylase/genetics
- Ornithine Decarboxylase/metabolism
- Polyamines/metabolism
- Polyamines/pharmacokinetics
- Polyamines/pharmacology
- Rats, Wistar
- Reverse Transcriptase Polymerase Chain Reaction
- Calponins
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Affiliation(s)
- Mario Grossi
- *Department of Experimental Medical Science, Lund University, Lund, Sweden
| | - Catarina Rippe
- *Department of Experimental Medical Science, Lund University, Lund, Sweden
| | - Ramasri Sathanoori
- †Department of Cardiology, Clinical Sciences, Lund University, Lund, Sweden
| | - Karl Swärd
- *Department of Experimental Medical Science, Lund University, Lund, Sweden
| | - Amalia Forte
- ‡Department of Experimental Medicine, Second University of Naples, Naples, Italy
| | - David Erlinge
- †Department of Cardiology, Clinical Sciences, Lund University, Lund, Sweden
| | - Lo Persson
- *Department of Experimental Medical Science, Lund University, Lund, Sweden
| | - Per Hellstrand
- *Department of Experimental Medical Science, Lund University, Lund, Sweden
| | - Bengt-Olof Nilsson
- *Department of Experimental Medical Science, Lund University, Lund, Sweden
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80
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Kirschner KM, Braun JFW, Jacobi CL, Rudigier LJ, Persson AB, Scholz H. Amine oxidase copper-containing 1 (AOC1) is a downstream target gene of the Wilms tumor protein, WT1, during kidney development. J Biol Chem 2014; 289:24452-62. [PMID: 25037221 DOI: 10.1074/jbc.m114.564336] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Amine oxidase copper-containing 1 (AOC1; formerly known as amiloride-binding protein 1) is a secreted glycoprotein that catalyzes the degradation of putrescine and histamine. Polyamines and their diamine precursor putrescine are ubiquitous to all organisms and fulfill pivotal functions in cell growth and proliferation. Despite the importance of AOC1 in regulating polyamine breakdown, very little is known about the molecular mechanisms that control its expression. We report here that the Wilms tumor protein, WT1, which is necessary for normal kidney development, activates transcription of the AOC1 gene. Expression of a firefly luciferase reporter under control of the proximal AOC1 promoter was significantly enhanced by co-transfection of a WT1 expression construct. Binding of WT1 protein to a cis-regulatory element in the AOC1 promoter was confirmed by electrophoretic mobility shift assay and chromatin immunoprecipitation. Antisense inhibition of WT1 protein translation strongly reduced Aoc1 transcripts in cultured murine embryonic kidneys and gonads. Aoc1 mRNA levels correlated with WT1 protein in several cell lines. Double immunofluorescent staining revealed a co-expression of WT1 and AOC1 proteins in the developing genitourinary system of mice and rats. Strikingly, induced changes in polyamine homeostasis affected branching morphogenesis of cultured murine embryonic kidneys in a developmental stage-specific manner. These findings suggest that WT1-dependent control of polyamine breakdown, which is mediated by changes in AOC1 expression, has a role in kidney organogenesis.
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Affiliation(s)
- Karin M Kirschner
- From the Institut für Vegetative Physiologie, Charité-Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Julian F W Braun
- From the Institut für Vegetative Physiologie, Charité-Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Charlotte L Jacobi
- From the Institut für Vegetative Physiologie, Charité-Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Lucas J Rudigier
- From the Institut für Vegetative Physiologie, Charité-Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Anja Bondke Persson
- From the Institut für Vegetative Physiologie, Charité-Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Holger Scholz
- From the Institut für Vegetative Physiologie, Charité-Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany
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81
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Niero EL, Rocha-Sales B, Lauand C, Cortez BA, de Souza MM, Rezende-Teixeira P, Urabayashi MS, Martens AA, Neves JH, Machado-Santelli GM. The multiple facets of drug resistance: one history, different approaches. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2014; 33:37. [PMID: 24775603 PMCID: PMC4041145 DOI: 10.1186/1756-9966-33-37] [Citation(s) in RCA: 93] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Accepted: 03/20/2014] [Indexed: 12/18/2022]
Abstract
Some cancers like melanoma and pancreatic and ovarian cancers, for example, commonly display resistance to chemotherapy, and this is the major obstacle to a better prognosis of patients. Frequently, literature presents studies in monolayer cell cultures, 3D cell cultures or in vivo studies, but rarely the same work compares results of drug resistance in different models. Several of these works are presented in this review and show that usually cells in 3D culture are more resistant to drugs than monolayer cultured cells due to different mechanisms. Searching for new strategies to sensitize different tumors to chemotherapy, many methods have been studied to understand the mechanisms whereby cancer cells acquire drug resistance. These methods have been strongly advanced along the years and therapies using different drugs have been increasingly proposed to induce cell death in resistant cells of different cancers. Recently, cancer stem cells (CSCs) have been extensively studied because they would be the only cells capable of sustaining tumorigenesis. It is believed that the resistance of CSCs to currently used chemotherapeutics is a major contributing factor in cancer recurrence and later metastasis development. This review aims to appraise the experimental progress in the study of acquired drug resistance of cancer cells in different models as well as to understand the role of CSCs as the major contributing factor in cancer recurrence and metastasis development, describing how CSCs can be identified and isolated.
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Affiliation(s)
- Evandro Luís Niero
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, Av, Prof, Lineu Prestes, 1524, Cidade Universitária, 05508-000 São Paulo, SP, Brazil.
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82
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Tang F, Saier MH. Transport proteins promoting Escherichia coli pathogenesis. Microb Pathog 2014; 71-72:41-55. [PMID: 24747185 DOI: 10.1016/j.micpath.2014.03.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Revised: 03/19/2014] [Accepted: 03/20/2014] [Indexed: 12/26/2022]
Abstract
Escherichia coli is a genetically diverse species infecting hundreds of millions of people worldwide annually. We examined seven well-characterized E. coli pathogens causing urinary tract infections, gastroenteritis, pyelonephritis and haemorrhagic colitis. Their transport proteins were identified and compared with each other and a non-pathogenic E. coli K12 strain to identify transport proteins related to pathogenesis. Each pathogen possesses a unique set of protein secretion systems for export to the cell surface or for injecting effector proteins into host cells. Pathogens have increased numbers of iron siderophore receptors and ABC iron uptake transporters, but the numbers and types of low-affinity secondary iron carriers were uniform in all strains. The presence of outer membrane iron complex receptors and high-affinity ABC iron uptake systems correlated, suggesting co-evolution. Each pathovar encodes a different set of pore-forming toxins and virulence-related outer membrane proteins lacking in K12. Intracellular pathogens proved to have a characteristically distinctive set of nutrient uptake porters, different from those of extracellular pathogens. The results presented in this report provide information about transport systems relevant to various types of E. coli pathogenesis that can be exploited in future basic and applied studies.
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Affiliation(s)
- Fengyi Tang
- Department of Molecular Biology, Division of Biological Sciences, University of California at San Diego, La Jolla, CA 92093-0116, USA.
| | - Milton H Saier
- Department of Molecular Biology, Division of Biological Sciences, University of California at San Diego, La Jolla, CA 92093-0116, USA.
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