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Atkinson E, Dickman R. Growth factors and their peptide mimetics for treatment of traumatic brain injury. Bioorg Med Chem 2023; 90:117368. [PMID: 37331175 DOI: 10.1016/j.bmc.2023.117368] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 05/16/2023] [Accepted: 06/05/2023] [Indexed: 06/20/2023]
Abstract
Traumatic brain injury (TBI) is a leading cause of disability in adults, caused by a physical insult damaging the brain. Growth factor-based therapies have the potential to reduce the effects of secondary injury and improve outcomes by providing neuroprotection against glutamate excitotoxicity, oxidative damage, hypoxia, and ischemia, as well as promoting neurite outgrowth and the formation of new blood vessels. Despite promising evidence in preclinical studies, few neurotrophic factors have been tested in clinical trials for TBI. Translation to the clinic is not trivial and is limited by the short in vivo half-life of the protein, the inability to cross the blood-brain barrier and human delivery systems. Synthetic peptide mimetics have the potential to be used in place of recombinant growth factors, activating the same downstream signalling pathways, with a decrease in size and more favourable pharmacokinetic properties. In this review, we will discuss growth factors with the potential to modulate damage caused by secondary injury mechanisms following a traumatic brain injury that have been trialled in other indications including spinal cord injury, stroke and neurodegenerative diseases. Peptide mimetics of nerve growth factor (NGF), hepatocyte growth factor (HGF), glial cell line-derived growth factor (GDNF), brain-derived neurotrophic factor (BDNF), platelet-derived growth factor (PDGF) and fibroblast growth factor (FGF) will be highlighted, most of which have not yet been tested in preclinical or clinical models of TBI.
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Affiliation(s)
- Emily Atkinson
- School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, UK; UCL Centre for Nerve Engineering, University College London, 29-39 Brunswick Square, London WC1N 1AX, UK.
| | - Rachael Dickman
- School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, UK.
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2
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Kaikai NE, Ba-M'hamed S, Ghanima A, Bennis M. Metam sodium exposure during pregnancy and lactation in mice caused behavioral abnormalities and oxidative stress in offspring. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2021; 85:103630. [PMID: 33711515 DOI: 10.1016/j.etap.2021.103630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 03/03/2021] [Accepted: 03/05/2021] [Indexed: 06/12/2023]
Abstract
Metam sodium (MS) is a widespread biocide with a broad-spectrum activity. Here, we addressed the behavioral impact of MS by exposing female mice to 50, 100 and 150 mg/kg of MS during both pregnancy and lactation, and evaluated the oxidative stress as a potential mechanism of MS-induced neurotoxicity. The results showed that MS affected fertility and reproduction parameters as well as some aspects of maternal behavior, especially at high doses. In offspring, MS caused a significant delay in the ontogeny of sensorimotor functions. In addition, treated mice exhibited during adulthood an increase of anxiety-like, depression-like behaviors as well as learning and memory impairment. These alterations were accompanied by an increase of the superoxide dismutase activity, and a significant decreased catalase and malondialdehyde activities in specific brain areas. The present work revealed that early exposure to MS induced sensorimotor and behavioral impairments in offspring likely associated with onset of oxidative stress.
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Affiliation(s)
- Nour-Eddine Kaikai
- Laboratory of Pharmacology, Neurobiology, Anthropology and Environment, Cadi Ayyad University, Faculty of Sciences, Marrakech, Morocco; Research Laboratory for Sustainable Development and Health, Cadi Ayyad University, Faculty of Sciences and Techniques, Marrakech, Morocco
| | - Saadia Ba-M'hamed
- Laboratory of Pharmacology, Neurobiology, Anthropology and Environment, Cadi Ayyad University, Faculty of Sciences, Marrakech, Morocco
| | - Abderrazzak Ghanima
- Research Laboratory for Sustainable Development and Health, Cadi Ayyad University, Faculty of Sciences and Techniques, Marrakech, Morocco.
| | - Mohamed Bennis
- Laboratory of Pharmacology, Neurobiology, Anthropology and Environment, Cadi Ayyad University, Faculty of Sciences, Marrakech, Morocco
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Rhea EM, Logsdon AF, Banks WA, Erickson ME. Intranasal Delivery: Effects on the Neuroimmune Axes and Treatment of Neuroinflammation. Pharmaceutics 2020; 12:pharmaceutics12111120. [PMID: 33233734 PMCID: PMC7699866 DOI: 10.3390/pharmaceutics12111120] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 11/09/2020] [Accepted: 11/10/2020] [Indexed: 02/02/2023] Open
Abstract
This review highlights the pre-clinical and clinical work performed to use intranasal delivery of various compounds from growth factors to stem cells to reduce neuroimmune interactions. We introduce the concept of intranasal (IN) delivery and the variations of this delivery method based on the model used (i.e., rodents, non-human primates, and humans). We summarize the literature available on IN delivery of growth factors, vitamins and metabolites, cytokines, immunosuppressants, exosomes, and lastly stem cells. We focus on the improvement of neuroimmune interactions, such as the activation of resident central nervous system (CNS) immune cells, expression or release of cytokines, and detrimental effects of signaling processes. We highlight common diseases that are linked to dysregulations in neuroimmune interactions, such as Alzheimer's disease, Parkinson's disease, stroke, multiple sclerosis, and traumatic brain injury.
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Affiliation(s)
- Elizabeth M. Rhea
- Geriatrics Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA 98108, USA; (A.F.L.); (W.A.B.); (M.E.E.)
- Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, WA 98195, USA
- Correspondence: ; Tel.: +1-206-764-2938
| | - Aric F. Logsdon
- Geriatrics Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA 98108, USA; (A.F.L.); (W.A.B.); (M.E.E.)
- Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, WA 98195, USA
| | - William A. Banks
- Geriatrics Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA 98108, USA; (A.F.L.); (W.A.B.); (M.E.E.)
- Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, WA 98195, USA
| | - Michelle E. Erickson
- Geriatrics Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA 98108, USA; (A.F.L.); (W.A.B.); (M.E.E.)
- Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, WA 98195, USA
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4
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Ait-Bali Y, Ba-M'hamed S, Gambarotta G, Sassoè-Pognetto M, Giustetto M, Bennis M. Pre- and postnatal exposure to glyphosate-based herbicide causes behavioral and cognitive impairments in adult mice: evidence of cortical ad hippocampal dysfunction. Arch Toxicol 2020; 94:1703-1723. [PMID: 32067069 DOI: 10.1007/s00204-020-02677-7] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 02/11/2020] [Indexed: 12/30/2022]
Abstract
Glyphosate-based herbicides (GBH) are the most widely used pesticides worldwide. Despite considerable progress in describing the neurotoxic potential of GBH, the harmful effects on brain cytoarchitecture and behavior are still unclear. Here, we addressed the developmental impact of GBH by exposing female mice to 250 or 500 mg/kg doses of GBH during both pregnancy and lactation and then examined the downstream effects at the behavioral, neurochemical and molecular levels. We show that pre- and neonatal exposure to GBH impairs fertility and reproduction parameters as well as maternal behavior of exposed mothers. In offspring, GBH was responsible for a global delay in innate reflexes and a deficit in motor development. At the adult age, exposed animals showed a decrease of locomotor activity, sociability, learning and short- and long-term memory associated with alterations of cholinergic and dopaminergic systems. Furthermore, GBH-activated microglia and astrocytes, sign of neuroinflammation event in the medial prefrontal cortex and hippocampus. At the molecular level, a down-regulation of brain-derived neurotrophic factor (BDNF) expression and an up-regulation of tyrosine-related kinase receptor (TrkB), NR1 subunit of NMDA receptor as well as tumor necrosis factor α (TNFα) were found in the brain of GBH-exposed mice. The present work demonstrates that GBH induces numerous behavioral and cognitive abnormalities closely associated with significant histological, neurochemical and molecular impairments. It also raises fundamental concerns about the ability of current safety testing to assess risks of pesticide exposure during developmental periods of central nervous system.
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Affiliation(s)
- Yassine Ait-Bali
- Laboratory of Pharmacology, Neurobiology and Behavior, Faculty of Sciences Semlalia, Cadi Ayyad University, Bd. Prince My Abdallah, BP. 2390, 40000, Marrakech, Morocco
- Department of Neuroscience, University of Turin, Turin, Italy
| | - Saadia Ba-M'hamed
- Laboratory of Pharmacology, Neurobiology and Behavior, Faculty of Sciences Semlalia, Cadi Ayyad University, Bd. Prince My Abdallah, BP. 2390, 40000, Marrakech, Morocco
| | - Giovanna Gambarotta
- Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
| | - Marco Sassoè-Pognetto
- Department of Neuroscience, University of Turin, Turin, Italy
- National Institute of Neuroscience-Italy, Turin, Italy
| | - Maurizio Giustetto
- Department of Neuroscience, University of Turin, Turin, Italy
- National Institute of Neuroscience-Italy, Turin, Italy
| | - Mohamed Bennis
- Laboratory of Pharmacology, Neurobiology and Behavior, Faculty of Sciences Semlalia, Cadi Ayyad University, Bd. Prince My Abdallah, BP. 2390, 40000, Marrakech, Morocco.
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5
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Kaikai NE, Ba-M'hamed S, Bennis M, Ghanima A. Prenatal exposure to the pesticide metam sodium induces sensorimotor and neurobehavioral abnormalities in mice offspring. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2020; 74:103309. [PMID: 31835201 DOI: 10.1016/j.etap.2019.103309] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 11/22/2019] [Accepted: 11/26/2019] [Indexed: 06/10/2023]
Abstract
The present study has investigated developmental neurotoxicity of Metam sodium (MS), from gestational day 6 and throughout the gestation period until delivery. Therefore, mated female mice were orally exposed on a daily basis to 0 (control), 50, 100 or 150 mg of MS/kg of body weight and their standard fertility and reproductive parameters were assessed. The offspring were examined for their sensorimotor development, depression and cognitive performance. Our results showed that MS exposure during pregnancy led to one case of mortality, two cases of abortion and disturbed fertility and reproductive parameters in pregnant dams. In offspring, MS induced an overall delay in innate reflexes and sensorimotor performances. Furthermore, all prenatally treated animals showed an increased level of depression-like behavior as well as a pronounced cognitive impairment in adulthood. These results demonstrated that prenatal exposure to MS causes a long-lasting developmental neurotoxicity and alters a wide range of behavioral functions in mice.
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Affiliation(s)
- Nour-Eddine Kaikai
- Laboratory of Pharmacology, Neurobiology and Behavior (URAC-37), Cadi Ayyad University, Marrakech, Morocco; Laboratory of Bioorganic and Macromolecular Chemistry. Cadi Ayyad University, Faculty of Sciences and Techniques, Marrakech, Morocco
| | - Saadia Ba-M'hamed
- Laboratory of Pharmacology, Neurobiology and Behavior (URAC-37), Cadi Ayyad University, Marrakech, Morocco
| | - Mohamed Bennis
- Laboratory of Pharmacology, Neurobiology and Behavior (URAC-37), Cadi Ayyad University, Marrakech, Morocco
| | - Abderrazzak Ghanima
- Laboratory of Bioorganic and Macromolecular Chemistry. Cadi Ayyad University, Faculty of Sciences and Techniques, Marrakech, Morocco.
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Dmytriyeva O, Belmeguenai A, Bezin L, Soud K, Drucker Woldbye DP, Gøtzsche CR, Pankratova S. Short erythropoietin-derived peptide enhances memory, improves long-term potentiation, and counteracts amyloid beta–induced pathology. Neurobiol Aging 2019; 81:88-101. [DOI: 10.1016/j.neurobiolaging.2019.05.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 03/27/2019] [Accepted: 05/06/2019] [Indexed: 12/23/2022]
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Kim YS, Sung DK, Kim H, Kong WH, Kim YE, Hahn SK. Nose-to-brain delivery of hyaluronate - FG loop peptide conjugate for non-invasive hypoxic-ischemic encephalopathy therapy. J Control Release 2019; 307:76-89. [PMID: 31229472 DOI: 10.1016/j.jconrel.2019.06.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 05/29/2019] [Accepted: 06/19/2019] [Indexed: 01/13/2023]
Abstract
The intranasal drug administration has attracted great interest as a non-invasive route allowing targeted delivery of drugs directly to the brain. However, one of the main issues in nasal drug administration is mucociliary clearance. Hyaluronate (HA) has been widely used as a mucoadhesive excipient for ocular, rectal, and vaginal delivery. Here, FG loop peptide (FGL) was conjugated to HA for improving enzymatic stability and delivery efficiency from the nose to the brain. The successful conjugation of FGL to aldehyde modified HA was confirmed by gel permeation chromatography (GPC) and 1H nuclear magnetic resonance (NMR). The outstanding enzymatic stability of HA-FGL conjugate was also corroborated by the GPC. The HA-FGL conjugate showed enhanced binding affinity onto nasal epithelial cells. In addition, in vivo nose-to-brain delivery of HA-FGL conjugate could be visualized by using an IVIS imaging system and fluorescence microscopy. Finally, in vivo therapeutic effect of HA-FGL conjugate was successfully confirmed by histological analysis, transferase-mediated uridine 5-triphosphate-biotin nick end-labeling (TUNEL) assay, immunofluorescent staining, transmission electron microscopy (TEM), and rotarod tests in hypoxic-ischemic encephalopathy model animals.
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Affiliation(s)
- Yun Seop Kim
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk 37673, Republic of Korea
| | - Dong Kyung Sung
- Department of Pediatrics, Samsung Medical Center, School of Medicine, Sungkyunkwan University, 81 Irwon-ro, Gangnam-gu, Seoul 06351, Republic of Korea
| | - Hyemin Kim
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk 37673, Republic of Korea; PHI Biomed Co., 175 Yeoksam-ro, Gangnam-gu, Seoul 06247, Republic of Korea
| | - Won Ho Kong
- Advanced Bio Convergence Center, Pohang Techno Park 394 Jigok-ro, Nam-gu, Pohang 37668, Gyeoungbuk, Republic of Korea
| | - Young Eun Kim
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology (SAIHST), Sungkyunkwan University, Seoul, Republic of Korea
| | - Sei Kwang Hahn
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk 37673, Republic of Korea; PHI Biomed Co., 175 Yeoksam-ro, Gangnam-gu, Seoul 06247, Republic of Korea.
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8
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Pereda-Pérez I, Valencia A, Baliyan S, Núñez Á, Sanz-García A, Zamora B, Rodríguez-Fernández R, Esteban JA, Venero C. Systemic administration of a fibroblast growth factor receptor 1 agonist rescues the cognitive deficit in aged socially isolated rats. Neurobiol Aging 2019; 78:155-165. [PMID: 30928883 DOI: 10.1016/j.neurobiolaging.2019.02.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Revised: 01/22/2019] [Accepted: 02/09/2019] [Indexed: 11/20/2022]
Abstract
Social isolation predominantly occurs in elderly people and it is strongly associated with cognitive decline. However, the mechanisms that produce isolation-related cognitive dysfunction during aging remain unclear. Here, we evaluated the cognitive, electrophysiological, and morphological effects of short- (4 weeks) and long-term (12 weeks) social isolation in aged male Wistar rats. Long-term but not short-term social isolation increased the plasma corticosterone levels and impaired spatial memory in the Morris water maze. Moreover, isolated animals displayed dampened hippocampal long-term potentiation in vivo, both in the dentate gyrus (DG) and CA1, as well as a specific reduction in the volume of the stratum oriens and spine density in CA1. Interestingly, social isolation induced a transient increase in hippocampal basic fibroblast growth factor (FGF2), whereas fibroblast growth factor receptor 1 (FGFR1) levels only increased after long-term isolation. Importantly, subchronic systemic administration of FGL, a synthetic peptide that activates FGFR1, rescued spatial memory in long-term isolated rats. These findings provide new insights into the neurobiological mechanisms underlying the detrimental effects on memory of chronic social isolation in the aged.
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Affiliation(s)
- Inmaculada Pereda-Pérez
- Department of Psychobiology, Universidad Nacional de Educación a Distancia (UNED), Madrid, Spain; Faculty of Experimental Sciences, Universidad Francisco de Vitoria, UFV, Madrid, Spain
| | - Azucena Valencia
- Department of Psychobiology, Universidad Nacional de Educación a Distancia (UNED), Madrid, Spain
| | - Shishir Baliyan
- Department of Psychobiology, Universidad Nacional de Educación a Distancia (UNED), Madrid, Spain
| | - Ángel Núñez
- School of Medicine, Autonoma University of Madrid, Madrid, Spain
| | - Ancor Sanz-García
- Unidad de Análisis de datos, Instituto de Investigación Sanitaria Hospital de la Princesa, Madrid, Spain
| | - Berta Zamora
- Department of Psychobiology, Universidad Nacional de Educación a Distancia (UNED), Madrid, Spain; Fetal Medicine Unit-SAMID, Department of Obstetrics and Gynecology, Hospital Universitario, Madrid, Spain
| | - Raquel Rodríguez-Fernández
- Department of Behavioural Sciences Methodology, Universidad Nacional de Educación a Distancia, Madrid, Spain
| | - José Antonio Esteban
- Department of Molecular Neurobiology, Centro de Biología Molecular "Severo Ochoa", Consejo Superior de Investigaciones Científicas (CSIC) / Universidad Autónoma de Madrid, Madrid, Spain
| | - César Venero
- Department of Psychobiology, Universidad Nacional de Educación a Distancia (UNED), Madrid, Spain.
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Turner CA, Lyons DM, Buckmaster CL, Aurbach EL, Watson SJ, Schatzberg AF, Akil H. Neural cell adhesion molecule peptide mimetics modulate emotionality: pharmacokinetic and behavioral studies in rats and non-human primates. Neuropsychopharmacology 2019; 44:356-363. [PMID: 29703997 PMCID: PMC6300554 DOI: 10.1038/s41386-018-0052-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 03/19/2018] [Accepted: 03/20/2018] [Indexed: 12/17/2022]
Abstract
Recent evidence highlights the fibroblast growth factor (FGF) family in emotion modulation. Although ligands that activate FGF receptors have antidepressant and anxiolytic effects in animal models, FGF ligands have a broad range of actions both in the brain and the periphery. Therefore, identifying molecular partners that may function as allosteric modulators could offer new avenues for drug development. Since neural cell adhesion molecule (NCAM) activates FGF receptors, we asked whether peripherally administered NCAM peptide mimetics penetrate the brain and alter the behavior of standardized tests that have predictive validity for drug treatments of anxiety or depression. The NCAM peptide mimetic, plannexin, acutely increased and chronically decreased anxiety, but did not have antidepressant effects in rats. Another NCAM peptide mimetic, FGLL, had acute anxiogenic effects and chronic antidepressant effects in rats. A related NCAM peptide mimetic, FGLS, had antidepressant effects without modulating anxiety-like behavior, and these antidepressant effects were blocked by an AMPA receptor antagonist. Cisternal cerebrospinal fluid (CSF) levels of FGLs correlated with blood plasma levels in rats and non-human primates, and CSF-to-blood ratios of FGLS were comparable in both species. Results indicate that NCAM peptide mimetics penetrate the brain and support the suggestion that FGLS may be a candidate for further development as a novel treatment for major depressive disorder in humans.
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Affiliation(s)
- Cortney A. Turner
- 0000000086837370grid.214458.eMolecular and Behavioral Neuroscience Institute, University of Michigan, Ann Arbor, MI 48109 USA
| | - David M. Lyons
- 0000000419368956grid.168010.eDepartment of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, CA 94305 USA
| | - Christine L. Buckmaster
- 0000000419368956grid.168010.eDepartment of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, CA 94305 USA
| | - Elyse L. Aurbach
- 0000000086837370grid.214458.eMolecular and Behavioral Neuroscience Institute, University of Michigan, Ann Arbor, MI 48109 USA
| | - Stanley J. Watson
- 0000000086837370grid.214458.eMolecular and Behavioral Neuroscience Institute, University of Michigan, Ann Arbor, MI 48109 USA ,0000000086837370grid.214458.eDepartment of Psychiatry, University of Michigan, Ann Arbor, MI 48109 USA
| | - Alan F. Schatzberg
- 0000000419368956grid.168010.eDepartment of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, CA 94305 USA
| | - Huda Akil
- 0000000086837370grid.214458.eMolecular and Behavioral Neuroscience Institute, University of Michigan, Ann Arbor, MI 48109 USA ,0000000086837370grid.214458.eDepartment of Psychiatry, University of Michigan, Ann Arbor, MI 48109 USA
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Peptides as Therapeutic Agents for Inflammatory-Related Diseases. Int J Mol Sci 2018; 19:ijms19092714. [PMID: 30208640 PMCID: PMC6163503 DOI: 10.3390/ijms19092714] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Revised: 09/07/2018] [Accepted: 09/09/2018] [Indexed: 01/08/2023] Open
Abstract
Inflammation is a physiological mechanism used by organisms to defend themselves against infection, restoring homeostasis in damaged tissues. It represents the starting point of several chronic diseases such as asthma, skin disorders, cancer, cardiovascular syndrome, arthritis, and neurological diseases. An increasing number of studies highlight the over-expression of inflammatory molecules such as oxidants, cytokines, chemokines, matrix metalloproteinases, and transcription factors into damaged tissues. The treatment of inflammatory disorders is usually linked to the use of unspecific small molecule drugs that can cause undesired side effects. Recently, many efforts are directed to develop alternative and more selective anti-inflammatory therapies, several of them imply the use of peptides. Indeed, peptides demonstrated as elected lead compounds toward several targets for their high specificity as well as recent and innovative synthetic strategies. Several endogenous peptides identified during inflammatory responses showed anti-inflammatory activities by inhibiting, reducing, and/or modulating the expression and activity of mediators. This review aims to discuss the potentialities and therapeutic use of peptides as anti-inflammatory agents in the treatment of different inflammation-related diseases and to explore the importance of peptide-based therapies.
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Motta-Teixeira LC, Machado-Nils AV, Battagello DS, Diniz GB, Andrade-Silva J, Silva S, Matos RA, do Amaral FG, Xavier GF, Bittencourt JC, Reiter RJ, Lucassen PJ, Korosi A, Cipolla-Neto J. The absence of maternal pineal melatonin rhythm during pregnancy and lactation impairs offspring physical growth, neurodevelopment, and behavior. Horm Behav 2018; 105:146-156. [PMID: 30114430 DOI: 10.1016/j.yhbeh.2018.08.006] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 08/02/2018] [Accepted: 08/12/2018] [Indexed: 02/04/2023]
Abstract
Maternal melatonin provides photoperiodic information to the fetus and thus influences the regulation and timing of the offspring's internal rhythms and preparation for extra-uterine development. There is clinical evidence that melatonin deprivation of both mother and fetus during pregnancy, and of the neonate during lactation, results in negative long-term health outcomes. As a consequence, we hypothesized that the absence of maternal pineal melatonin might determine abnormal brain programming in the offspring, which would lead to long-lasting implications for behavior and brain function. To test our hypothesis, we investigated in rats the effects of maternal melatonin deprivation during gestation and lactation (MMD) to the offspring and the effects of its therapeutic replacement. The parameters evaluated were: (1) somatic, physical growth and neurobehavioral development of pups of both sexes; (2) hippocampal-dependent spatial learning and memory of the male offspring; (3) adult hippocampal neurogenesis of the male offspring. Our findings show that MMD significantly delayed male offspring's onset of fur development, pinna detachment, eyes opening, eruption of superior incisor teeth, testis descent and the time of maturation of palmar grasp, righting reflex, free-fall righting and walking. Conversely, female offspring neurodevelopment was not affected. Later on, male offspring show that MMD was able to disrupt both spatial reference and working memory in the Morris Water Maze paradigm and these deficits correlate with changes in the number of proliferative cells in the hippocampus. Importantly, all the observed impairments were reversed by maternal melatonin replacement therapy. In summary, we demonstrate that MMD delays the appearance of physical features, neurodevelopment and cognition in the male offspring, and points to putative public health implications for night shift working mothers.
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Affiliation(s)
- Lívia Clemente Motta-Teixeira
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | | | | | - Giovanne Baroni Diniz
- Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - Jéssica Andrade-Silva
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - Sinésio Silva
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - Raphael Afonso Matos
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - Fernanda Gaspar do Amaral
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil; Department of Physiology, Federal University of São Paulo, São Paulo, SP, Brazil
| | | | - Jackson Cioni Bittencourt
- Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - Russel J Reiter
- Department of Cellular & Structural Biology, University of Texas, Health Science Center, San Antonio, USA
| | - Paul John Lucassen
- Brain Plasticity Group, Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, the Netherlands
| | - Aniko Korosi
- Brain Plasticity Group, Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, the Netherlands
| | - José Cipolla-Neto
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil.
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NCAM Mimetic Peptides: Potential Therapeutic Target for Neurological Disorders. Neurochem Res 2018; 43:1714-1722. [DOI: 10.1007/s11064-018-2594-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 06/27/2018] [Accepted: 07/06/2018] [Indexed: 10/28/2022]
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13
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Safety evaluation of supratherapeutic dose of Maytenus ilicifolia Mart. ex Reissek e xtracts on fertility and neurobehavioral status of male and pregnant rats. Regul Toxicol Pharmacol 2017; 90:160-169. [DOI: 10.1016/j.yrtph.2017.09.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 09/04/2017] [Accepted: 09/05/2017] [Indexed: 12/15/2022]
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Asua D, Bougamra G, Calleja-Felipe M, Morales M, Knafo S. Peptides Acting as Cognitive Enhancers. Neuroscience 2017; 370:81-87. [PMID: 29030286 DOI: 10.1016/j.neuroscience.2017.10.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 09/25/2017] [Accepted: 10/02/2017] [Indexed: 10/18/2022]
Abstract
The aim of this paper is to present an overview of three peptides that, by improving synaptic function, enhance learning and memory in laboratory rodents. We summarize their structure, their mechanisms of action, and their effects on synaptic and cognitive function. First we describe FGL, a peptide derived from the neural cell adhesion molecule which improves cognition by the activation of the PKC pathway that triggers an activity-dependent delivery of AMPA receptors to the synapses. Then we describe PTD4-PI3KAc peptide that by activating PI3K signaling pathway it promotes synapse and spine formation and enhances hippocampal dependent memory. Lastly, we describe a new peptide derived from the well-known tumor suppressor PTEN that prevents pathological interactions between PTEN and PDZ proteins at synapses during exposure to Amyloid beta. This action prevents memory deterioration in mouse model of Alzheimer's disease. Together, this review indicates how learning and memory can be improved by manipulating synaptic function and number through pharmacological treatment with peptides, and it establishes synaptic function as a valid target for cognitive enhancement.
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Affiliation(s)
- Diego Asua
- Molecular Cognition Laboratory, Biophysics Institute, CSIC-UPV/EHU, Campus Universidad del País Vasco, Barrio Sarriena s/n, 48940 Leioa, Spain
| | - Ghassen Bougamra
- Molecular Cognition Laboratory, Biophysics Institute, CSIC-UPV/EHU, Campus Universidad del País Vasco, Barrio Sarriena s/n, 48940 Leioa, Spain
| | - María Calleja-Felipe
- Molecular Cognition Laboratory, Biophysics Institute, CSIC-UPV/EHU, Campus Universidad del País Vasco, Barrio Sarriena s/n, 48940 Leioa, Spain
| | - Miguel Morales
- Molecular Cognition Laboratory, Biophysics Institute, CSIC-UPV/EHU, Campus Universidad del País Vasco, Barrio Sarriena s/n, 48940 Leioa, Spain; Institut de Neurociències, Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Shira Knafo
- Molecular Cognition Laboratory, Biophysics Institute, CSIC-UPV/EHU, Campus Universidad del País Vasco, Barrio Sarriena s/n, 48940 Leioa, Spain; Ikerbasque, Basque Foundation for Science, Bilbao, Basque Country, Spain; Sagol Department of Neurobiology, Faculty of Natural Sciences, University of Haifa, Haifa, Israel.
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Malloul H, Mahdani FM, Bennis M, Ba-M'hamed S. Prenatal Exposure to Paint Thinner Alters Postnatal Development and Behavior in Mice. Front Behav Neurosci 2017; 11:171. [PMID: 28959195 PMCID: PMC5604056 DOI: 10.3389/fnbeh.2017.00171] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Accepted: 08/29/2017] [Indexed: 01/17/2023] Open
Abstract
Occupational exposure and sniffing of volatile organic solvents continue to be a worldwide health problem, raising the risk for teratogenic sequelae of maternal inhalant abuse. Real life exposures usually involve simultaneous exposures to multiple solvents, and almost all the abused solvents contain a mixture of two or more different volatile compounds. However, several studies examined the teratogenicity due to industrial exposure to a single volatile solvent but investigating the teratogenic potential of complex chemical mixture such as thinner remains unexplored. This study was undertaken to evaluate developmental neurotoxicity of paint thinner using a mouse model. Mated female mice (N = 21) were, therefore, exposed to repeated and brief inhalation episodes of 0, 300 or 600 ppm of thinner during the entire period of pregnancy. Females weigh was recorded and their standard fertility and reproductive parameters were assessed. After birth postnatal day 1 (PND1), offspring (N = 88) length and body weight were measured in a daily basis. At PND5, the pups were assessed for their postnatal growth, physical maturation, reflex development, neuromotor abilities, sensory function, activity level, anxiety, depression, learning and memory functions. At adulthood, structural changes of the hippocampus were examined by estimating the total volume of the dentate gyrus. Except one case of thinner induced abortion at the higher dose, our results showed that the prenatal exposure to the solvent did not cause any maternal toxicity or decrease in the viability of the offspring. Therefore, a lower birth weight, decrease in the litter size and delayed reflexes ontogeny were registered in prenatally exposed offspring to both 300 ppm and 600 ppm of thinner. In addition, prenatally exposure to thinner resulted in increased anxiolytic- and depression-like behaviors. In contrast, impaired learning and memory functions and decreased hippocampal dentate gyrus volume were revealed only in the prenatally treated offspring by 600 ppm of thinner. Based on these results, we can conclude that prenatally exposure to paint thinner causes a long-lasting developmental neurotoxicity and alters a wide range of behavioral functions in mice. This shows the risk that mothers who abuse thinner paint expose their offspring.
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Affiliation(s)
- Hanaa Malloul
- Laboratory of Pharmacology, Neurobiology and Behavior (URAC-37), Faculty of Sciences Semlalia, University Cadi AyyadMarrakech, Morocco
| | - Ferdaousse M Mahdani
- Laboratory of Pharmacology, Neurobiology and Behavior (URAC-37), Faculty of Sciences Semlalia, University Cadi AyyadMarrakech, Morocco
| | - Mohammed Bennis
- Laboratory of Pharmacology, Neurobiology and Behavior (URAC-37), Faculty of Sciences Semlalia, University Cadi AyyadMarrakech, Morocco
| | - Saadia Ba-M'hamed
- Laboratory of Pharmacology, Neurobiology and Behavior (URAC-37), Faculty of Sciences Semlalia, University Cadi AyyadMarrakech, Morocco
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Berardino BG, Fesser EA, Cánepa ET. Perinatal protein malnutrition alters expression of miRNA biogenesis genes Xpo5 and Ago2 in mice brain. Neurosci Lett 2017; 647:38-44. [PMID: 28300636 DOI: 10.1016/j.neulet.2017.03.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 03/08/2017] [Accepted: 03/09/2017] [Indexed: 11/15/2022]
Abstract
Due to its widespread incidence, maternal malnutrition remains one of the major non-genetic factors affecting the development of newborn's brain. While all nutrients have certain influence on brain maturation, proteins appear to be the most critical for the development of neurological functions. An increasing number of studies point out that the effects of early-life nutritional inadequacy has long lasting effects on the brain and lead to permanent deficits in learning and behavior. Epigenetic mechanisms provide a potential link between the nutrition status during critical periods and changes in gene expression that may lead to disease phenotypes. Among those epigenetic mechanisms microRNAs (miRNAs) emerge as promising molecules for the link between nutrition and gene expression due to their relevance in many central nervous system functions. The objective of the current study was to evaluate the impact of perinatal protein malnutrition on the development of male and female mice offspring and to analyze the expression of the genes involved in the miRNA biogenesis pathway in different mouse brain structures. We demonstrated that early nutritional stress such as exposition to a protein-deficient diet during gestation and lactation reduced the hippocampal weight, delayed offspring's development and deregulated the expression of Xpo5 and Ago2 genes in hippocampus and hypothalamus of weanling mice. Moreover, an overall increase in mature miRNAs was consistent with the induction of Xpo5 mRNA. Altered miRNA biogenesis could modify the availability and functionality of miRNA becoming a causal factor of the adverse effects of protein malnutrition.
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Affiliation(s)
- Bruno G Berardino
- Laboratorio de Neuroepigenética, Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, and Consejo Nacional de Investigaciones Científicas y Técnicas, Ciudad de Buenos Aires, Argentina
| | - Estefanía A Fesser
- Laboratorio de Neuroepigenética, Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, and Consejo Nacional de Investigaciones Científicas y Técnicas, Ciudad de Buenos Aires, Argentina
| | - Eduardo T Cánepa
- Laboratorio de Neuroepigenética, Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, and Consejo Nacional de Investigaciones Científicas y Técnicas, Ciudad de Buenos Aires, Argentina.
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17
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Gulisano W, Bizzoca A, Gennarini G, Palmeri A, Puzzo D. Role of the adhesion molecule F3/Contactin in synaptic plasticity and memory. Mol Cell Neurosci 2016; 81:64-71. [PMID: 28038945 DOI: 10.1016/j.mcn.2016.12.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2016] [Revised: 12/07/2016] [Accepted: 12/22/2016] [Indexed: 12/14/2022] Open
Abstract
Cell adhesion molecules (CAMs) have a pivotal role in building and maintaining synaptic structures during brain development participating in axonal elongation and pathfinding, glial guidance of neuronal migration, as well as myelination. CAMs expression persists in the adult brain particularly in structures undergoing postnatal neurogenesis and involved in synaptic plasticity and memory as the hippocampus. Among the neural CAMs, we have recently focused on F3/Contactin, a glycosylphosphatidyl inositol-anchored glycoprotein belonging to the immunoglobulin superfamily, involved in neuronal development, synaptic maintenance and organization of neuronal networks. Here, we discuss our recent data suggesting that F3/Contactin exerts a role in hippocampal synaptic plasticity and memory in adult and aged mice. In particular, we have studied long-term potentiation (LTP), spatial and object recognition memory, and phosphorylation of the transcription factor cAMP-Responsive-Element Binding protein (CREB) in a transgenic mouse model of F3/Contactin overexpression. We also investigated whether F3/Contactin might influence neuronal apoptosis and the production of amyloid-beta peptide (Aβ), known to be one of the main pathogenetic hallmarks of Alzheimer's disease (AD). In conclusion, a further understanding of F3/Contactin role in synaptic plasticity and memory might have interesting clinical outcomes in cognitive disorders, such as aging and AD, offering innovative therapeutic opportunities.
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Affiliation(s)
- Walter Gulisano
- Section of Physiology, Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Antonella Bizzoca
- Section of Physiology, Department of Basic Medical Sciences, Neuroscience and Sensory Organs, University of Bari, Bari, Italy
| | - Gianfranco Gennarini
- Section of Physiology, Department of Basic Medical Sciences, Neuroscience and Sensory Organs, University of Bari, Bari, Italy
| | - Agostino Palmeri
- Section of Physiology, Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy.
| | - Daniela Puzzo
- Section of Physiology, Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy.
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Ait-Bali Y, Ba-M'hamed S, Bennis M. Prenatal Paraquat exposure induces neurobehavioral and cognitive changes in mice offspring. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2016; 48:53-62. [PMID: 27764701 DOI: 10.1016/j.etap.2016.10.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 10/09/2016] [Accepted: 10/12/2016] [Indexed: 06/06/2023]
Abstract
In the present work, we investigated developmental toxicity of Paraquat (PQ), from the 1st or 6th day of mating and throughout the gestation period. We have examined several parameters, including toxicity indices, reproductive performance, sensorimotor development, as well as anxiety and cognitive performance of the offspring. Our results showed that exposure to 20mg/kg of Paraquat during the first days of pregnancy completely prevents pregnancy in treated mice, but from the 6th day of pregnancy, an alteration in fertility and reproductive parameters was observed. In offspring, the PQ was responsible for an overall delay of innate reflexes and a deficit in motor development. All exposed animals showed a decrease in the level of locomotor activity, increased levels of anxiety-like behavior and pronounced cognitive impairment in adulthood. These results demonstrated that Paraquat led to the onset of many behavioral changes that stem from the impairment of neuronal developmental processes in prenatally exposed mice.
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Affiliation(s)
- Yassine Ait-Bali
- Laboratoire de Pharmacologie, Neurobiologie et Comportement (URAC 37) Cadi Ayyad University, Marrakech, Morocco
| | - Saadia Ba-M'hamed
- Laboratoire de Pharmacologie, Neurobiologie et Comportement (URAC 37) Cadi Ayyad University, Marrakech, Morocco
| | - Mohammed Bennis
- Laboratoire de Pharmacologie, Neurobiologie et Comportement (URAC 37) Cadi Ayyad University, Marrakech, Morocco.
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Epobis is a Nonerythropoietic and Neuroprotective Agonist of the Erythropoietin Receptor with Anti-Inflammatory and Memory Enhancing Effects. Mediators Inflamm 2016; 2016:1346390. [PMID: 27990061 PMCID: PMC5136666 DOI: 10.1155/2016/1346390] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Revised: 08/26/2016] [Accepted: 09/15/2016] [Indexed: 12/12/2022] Open
Abstract
The cytokine erythropoietin (EPO) stimulates proliferation and differentiation of erythroid progenitor cells. Moreover, EPO has neuroprotective, anti-inflammatory, and antioxidative effects, but the use of EPO as a neuroprotective agent is hampered by its erythropoietic activity. We have recently designed the synthetic, dendrimeric peptide, Epobis, derived from the sequence of human EPO. This peptide binds the EPO receptor and promotes neuritogenesis and neuronal cell survival. Here we demonstrate that Epobis in vitro promotes neuritogenesis in primary motoneurons and has anti-inflammatory effects as demonstrated by its ability to decrease TNF release from activated AMJ2-C8 macrophages and rat primary microglia. When administered systemically Epobis is detectable in both plasma and cerebrospinal fluid, demonstrating that the peptide crosses the blood-brain barrier. Importantly, Epobis is not erythropoietic, but systemic administration of Epobis in rats delays the clinical signs of experimental autoimmune encephalomyelitis, an animal model of multiple sclerosis, and the peptide has long-term, but not short-term, effects on working memory, detected as an improved social memory 3 days after administration. These data reveal Epobis to be a nonerythropoietic and neuroprotective EPO receptor agonist with anti-inflammatory and memory enhancing properties.
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Aonurm-Helm A, Jaako K, Jürgenson M, Zharkovsky A. Pharmacological approach for targeting dysfunctional brain plasticity: Focus on neural cell adhesion molecule (NCAM). Pharmacol Res 2016; 113:731-738. [DOI: 10.1016/j.phrs.2016.04.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 03/29/2016] [Accepted: 04/08/2016] [Indexed: 11/26/2022]
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Koss K, Unsworth L. Neural tissue engineering: Bioresponsive nanoscaffolds using engineered self-assembling peptides. Acta Biomater 2016; 44:2-15. [PMID: 27544809 DOI: 10.1016/j.actbio.2016.08.026] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 07/26/2016] [Accepted: 08/16/2016] [Indexed: 12/25/2022]
Abstract
UNLABELLED Rescuing or repairing neural tissues is of utmost importance to the patient's quality of life after an injury. To remedy this, many novel biomaterials are being developed that are, ideally, non-invasive and directly facilitate neural wound healing. As such, this review surveys the recent approaches and applications of self-assembling peptides and peptide amphiphiles, for building multi-faceted nanoscaffolds for direct application to neural injury. Specifically, methods enabling cellular interactions with the nanoscaffold and controlling the release of bioactive molecules from the nanoscaffold for the express purpose of directing endogenous cells in damaged or diseased neural tissues is presented. An extensive overview of recently derived self-assembling peptide-based materials and their use as neural nanoscaffolds is presented. In addition, an overview of potential bioactive peptides and ligands that could be used to direct behaviour of endogenous cells are categorized with their biological effects. Finally, a number of neurotrophic and anti-inflammatory drugs are described and discussed. Smaller therapeutic molecules are emphasized, as they are thought to be able to have less potential effect on the overall peptide self-assembly mechanism. Options for potential nanoscaffolds and drug delivery systems are suggested. STATEMENT OF SIGNIFICANCE Self-assembling nanoscaffolds have many inherent properties making them amenable to tissue engineering applications: ease of synthesis, ease of customization with bioactive moieties, and amenable for in situ nanoscaffold formation. The combination of the existing knowledge on bioactive motifs for neural engineering and the self-assembling propensity of peptides is discussed in specific reference to neural tissue engineering.
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22
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Klein R, Mahlberg N, Ohren M, Ladwig A, Neumaier B, Graf R, Hoehn M, Albrechtsen M, Rees S, Fink GR, Rueger MA, Schroeter M. The Neural Cell Adhesion Molecule-Derived (NCAM)-Peptide FG Loop (FGL) Mobilizes Endogenous Neural Stem Cells and Promotes Endogenous Regenerative Capacity after Stroke. J Neuroimmune Pharmacol 2016; 11:708-720. [DOI: 10.1007/s11481-016-9694-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 06/20/2016] [Indexed: 12/20/2022]
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23
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Makani V, Jang YG, Christopher K, Judy W, Eckstein J, Hensley K, Chiaia N, Kim DS, Park J. BBB-Permeable, Neuroprotective, and Neurotrophic Polysaccharide, Midi-GAGR. PLoS One 2016; 11:e0149715. [PMID: 26939023 PMCID: PMC4777489 DOI: 10.1371/journal.pone.0149715] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Accepted: 02/04/2016] [Indexed: 12/19/2022] Open
Abstract
An enormous amount of efforts have been poured to find an effective therapeutic agent for the treatment of neurodegenerative diseases including Alzheimer’s disease (AD). Among those, neurotrophic peptides that regenerate neuronal structures and increase neuron survival show a promise in slowing neurodegeneration. However, the short plasma half-life and poor blood-brain-barrier (BBB)-permeability of neurotrophic peptides limit their in vivo efficacy. Thus, an alternative neurotrophic agent that has longer plasma half-life and better BBB-permeability has been sought for. Based on the recent findings of neuroprotective polysaccharides, we searched for a BBB-permeable neuroprotective polysaccharide among natural polysaccharides that are approved for human use. Then, we discovered midi-GAGR, a BBB-permeable, long plasma half-life, strong neuroprotective and neurotrophic polysaccharide. Midi-GAGR is a 4.7kD cleavage product of low acyl gellan gum that is approved by FDA for human use. Midi-GAGR protected rodent cortical neurons not only from the pathological concentrations of co-/post-treated free reactive radicals and Aβ42 peptide but also from activated microglial cells. Moreover, midi-GAGR showed a good neurotrophic effect; it enhanced neurite outgrowth and increased phosphorylated cAMP-responsive element binding protein (pCREB) in the nuclei of primary cortical neurons. Furthermore, intra-nasally administered midi-GAGR penetrated the BBB and exerted its neurotrophic effect inside the brain for 24 h after one-time administration. Midi-GAGR appears to activate fibroblast growth factor receptor 1 (FGFR1) and its downstream neurotrophic signaling pathway for neuroprotection and CREB activation. Additionally, 14-day intranasal administration of midi-GAGR not only increased neuronal activity markers but also decreased hyperphosphorylated tau, a precursor of neurofibrillary tangle, in the brains of the AD mouse model, 3xTg-AD. Taken together, midi-GAGR with good BBB-permeability, long plasma half-life, and strong neuroprotective and neurotrophic effects has a great therapeutic potential for the treatment of neurodegenerative diseases, especially AD.
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Affiliation(s)
- Vishruti Makani
- Department of Neurosciences, College of Medicine and Life Sciences, University of Toledo, Toledo, Ohio, United States of America
| | - Yong-gil Jang
- Department of Neurosciences, College of Medicine and Life Sciences, University of Toledo, Toledo, Ohio, United States of America
| | - Kevin Christopher
- Department of Neurosciences, College of Medicine and Life Sciences, University of Toledo, Toledo, Ohio, United States of America
| | - Wesley Judy
- Department of Neurosciences, College of Medicine and Life Sciences, University of Toledo, Toledo, Ohio, United States of America
| | - Jacob Eckstein
- Department of Neurosciences, College of Medicine and Life Sciences, University of Toledo, Toledo, Ohio, United States of America
| | - Kenneth Hensley
- Department of Pathology, College of Medicine and Life Sciences, University of Toledo, Toledo, Ohio, United States of America
| | - Nicolas Chiaia
- Department of Neurosciences, College of Medicine and Life Sciences, University of Toledo, Toledo, Ohio, United States of America
| | - Dong-Shik Kim
- Department of Chemical Engineering, College of Engineering, University of Toledo, Toledo, Ohio, United States of America
| | - Joshua Park
- Department of Neurosciences, College of Medicine and Life Sciences, University of Toledo, Toledo, Ohio, United States of America
- * E-mail:
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Rao Barkur R, Bairy LK. Comparison of the developmental milestones and preweaning neurobehavioral parameters in rat pups exposed to lead (Pb) during gestation, lactation and pregestation period. Drug Chem Toxicol 2015; 39:248-55. [DOI: 10.3109/01480545.2015.1082136] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Rajashekar Rao Barkur
- Department of Biochemistry, Melaka Manipal Medical College, Manipal University, Manipal, India and
| | - Laxminarayana K. Bairy
- Department of Pharmacology, Kasturba Medical College, Manipal University, Manipal, India
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25
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Klein R, Blaschke S, Neumaier B, Endepols H, Graf R, Keuters M, Hucklenbroich J, Albrechtsen M, Rees S, Fink GR, Schroeter M, Rueger MA. The synthetic NCAM mimetic peptide FGL mobilizes neural stem cells in vitro and in vivo. Stem Cell Rev Rep 2015; 10:539-47. [PMID: 24817672 DOI: 10.1007/s12015-014-9512-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The neural cell adhesion molecule (NCAM) plays a role in neurite outgrowth, synaptogenesis, and neuronal differentiation. The NCAM mimetic peptide FG Loop (FGL) promotes neuronal survival in vitro and enhances spatial learning and memory in rats. We here investigated the effects of FGL on neural stem cells (NSC) in vitro and in vivo. In vitro, cell proliferation of primary NSC was assessed after exposure to various concentrations of NCAM or FGL. The differentiation potential of NCAM- or FGL-treated cells was assessed immunocytochemically. To investigate its influence on endogenous NSC in vivo, FGL was injected subcutaneously into adult rats. The effects on NSC mobilization were studied both via non-invasive positron emission tomography (PET) imaging using the tracer [(18)F]-fluoro-L-thymidine ([(18)F]FLT), as well as with immunohistochemistry. Only FGL significantly enhanced NSC proliferation in vitro, with a maximal effect at 10 μg/ml. During differentiation, NCAM promoted neurogenesis, while FGL induced an oligodendroglial phenotype; astrocytic differentiation was neither affected by NCAM or FGL. Those differential effects of NCAM and FGL on differentiation were mediated through different receptors. After FGL-injection in vivo, proliferative activity of NSC in the subventricular zone (SVZ) was increased (compared to placebo-treated animals). Moreover, non-invasive imaging of cell proliferation using [(18)F]FLT-PET supported an FGL-induced mobilization of NSC from both the SVZ and the hippocampus. We conclude that FGL robustly induces NSC mobilization in vitro and in vivo, and supports oligodendroglial differentiation. This capacity renders FGL a promising agent to facilitate remyelinization, which may eventually make FGL a drug candidate for demyelinating neurological disorders.
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Affiliation(s)
- Rebecca Klein
- Department of Neurology, University Hospital of Cologne, Kerpener Strasse 62, 50924, Cologne, Germany
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Korshunova I, Gjørlund MD, Owczarek S, Petersen AV, Perrier JF, Gøtzsche CR, Berezin V. A neuroligin-1-derived peptide stimulates phosphorylation of the NMDA receptor NR1 subunit and rescues MK-801-induced decrease in long-term potentiation and memory impairment. Pharmacol Res Perspect 2015; 3:e00126. [PMID: 26038702 PMCID: PMC4448987 DOI: 10.1002/prp2.126] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Accepted: 01/19/2015] [Indexed: 12/02/2022] Open
Abstract
Neuroligins (NLs) are postsynaptic adhesion molecules, interacting with presynaptic neurexins (NXs), which determine the differential formation of excitatory (glutamatergic, NL1) and inhibitory (GABAergic, NL2) synapses. We have previously demonstrated that treatment with a NL2-derived peptide, neurolide-2, reduces sociability and increase animal aggression. We hypothesized that interfering with NL1 function at the excitatory synapses might regulate synaptic plasticity and learning, and counteract memory deficits induced by N-methyl-d-aspartate (NMDA) receptor inhibition. First, neuronal NMDA receptor phosphorylation after treatment with NL1 or a mimetic peptide, neurolide-1, was quantified by immunoblotting. Subsequently, we investigated effects of neurolide-1 on long-term potentiation (LTP) induction in hippocampal slices compromised by NMDA receptor inhibitor MK-801. Finally, we investigated neurolide-1 effects on short- and long-term social and spatial memory in social recognition, Morris water-maze, and Y-maze tests. We found that subcutaneous neurolide-1 administration, restored hippocampal LTP compromised by NMDA receptor inhibitor MK-801. It counteracted MK-801-induced memory deficit in the water-maze and Y-maze tests after long-term treatment (24 h and 1–2 h before the test), but not after short-term exposure (1–2 h). Long-term exposure to neurolide-1 also facilitated social recognition memory. In addition, neurolide-1-induced phosphorylation of the NMDA receptor NR1 subunit on a site important for synaptic trafficking, potentially favoring synaptic receptor retention. Our findings emphasize the role of NL1–NMDA receptor interaction in cognition, and identify neurolide-1, as a valuable pharmacological tool to examine the in vivo role of postsynaptic NL1 in cognitive behavior in physiological and pathological conditions.
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Affiliation(s)
- Irina Korshunova
- Laboratory of Neural Plasticity, University of Copenhagen Copenhagen, Denmark
| | - Michelle D Gjørlund
- Laboratory of Neural Plasticity, University of Copenhagen Copenhagen, Denmark ; Neuronal Signaling Laboratory, Department of Neuroscience and Pharmacology, University of Copenhagen Copenhagen, Denmark
| | - Sylwia Owczarek
- Laboratory of Neural Plasticity, University of Copenhagen Copenhagen, Denmark
| | - Anders V Petersen
- Neuronal Signaling Laboratory, Department of Neuroscience and Pharmacology, University of Copenhagen Copenhagen, Denmark
| | - Jean-François Perrier
- Neuronal Signaling Laboratory, Department of Neuroscience and Pharmacology, University of Copenhagen Copenhagen, Denmark
| | | | - Vladimir Berezin
- Laboratory of Neural Plasticity, University of Copenhagen Copenhagen, Denmark
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27
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Zellinger C, Salvamoser JD, Seeger N, Russmann V, Potschka H. Impact of the neural cell adhesion molecule-derived peptide FGL on seizure progression and cellular alterations in the mouse kindling model. ACS Chem Neurosci 2014; 5:185-93. [PMID: 24456603 DOI: 10.1021/cn400153g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
The neural cell adhesion molecule peptide mimetic fibroblast growth loop (FGL) proved to exert neuroprotective, neurotrophic, and anti-inflammatory effects in different in vitro and in vivo experiments. Based on this beneficial efficacy profile, it is currently in clinical development for neurodegenerative diseases and brain insults. Here, we addressed the hypothesis that the peptide might affect development of seizures in a kindling paradigm, as well as associated behavioral and cellular alterations. Both doses tested, 2 and 10 mg/kg FGL, significantly reduced the number of stimulations necessary to induce a generalized seizure. FGL did not exert relevant effects on the behavioral patterns of kindled animals. As expected, kindling increased the hippocampal cell proliferation rate. Whereas the low dose of FGL did not affect this kindling-associated alteration, 10 mg/kg FGL proved to attenuate the expansion of the doublecortin-positive cell population. These data suggest that FGL administration might have an impact on disease-associated alterations in the hippocampal neuronal progenitor cell population. In conclusion, the effects of the peptide mimetic FGL in the kindling model do not confirm a disease-modifying effect with a beneficial impact on the development or course of epilepsy. The results obtained with FGL rather raise some concern regarding a putative effect, which might promote the formation of a hyperexcitable network. Future studies are required to further assess the risks in models with development of spontaneous seizures.
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Affiliation(s)
- Christina Zellinger
- Institute
of Pharmacology, Toxicology, and Pharmacy, Ludwig-Maximilians-University, Koeniginstrasse 16, D-80539 Munich, Germany
| | - Josephine D. Salvamoser
- Institute
of Pharmacology, Toxicology, and Pharmacy, Ludwig-Maximilians-University, Koeniginstrasse 16, D-80539 Munich, Germany
| | - Natalie Seeger
- Institute
of Pharmacology, Toxicology, and Pharmacy, Ludwig-Maximilians-University, Koeniginstrasse 16, D-80539 Munich, Germany
| | - Vera Russmann
- Institute
of Pharmacology, Toxicology, and Pharmacy, Ludwig-Maximilians-University, Koeniginstrasse 16, D-80539 Munich, Germany
| | - Heidrun Potschka
- Institute
of Pharmacology, Toxicology, and Pharmacy, Ludwig-Maximilians-University, Koeniginstrasse 16, D-80539 Munich, Germany
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28
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Belluscio LM, Berardino BG, Ferroni NM, Ceruti JM, Cánepa ET. Early protein malnutrition negatively impacts physical growth and neurological reflexes and evokes anxiety and depressive-like behaviors. Physiol Behav 2014; 129:237-54. [PMID: 24607933 DOI: 10.1016/j.physbeh.2014.02.051] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Accepted: 02/27/2014] [Indexed: 11/30/2022]
Abstract
Malnutrition is a worldwide problem affecting millions of unborn and young children during the most vulnerable stages of their development. In humans, poor maternal nutrition is a major cause of intrauterine growth restriction which is associated with an increased risk of perinatal mortality and long-term morbidity. In addition, intrauterine growth restriction correlates with neurodevelopmental delays and alterations of brain structure and neurochemistry. While there is no doubt that maternal malnutrition is a principal cause of perturbed development of the fetal brain and that all nutrients have certain influence on brain maturation, proteins appear to be the most critical for the development of neurological functions. In the present study we assessed male and female mouse offspring, born to dams protein restricted during pregnancy and lactation, in physical growth and neurobehavioral development and also in social interaction, motivation, anxiety and depressive behaviors. Moreover, we evaluate the impact of the low protein diet on dams in relation to their maternal care and anxiety-related behavior given that these clearly affect pups development. We observed that maternal protein restriction during pregnancy and lactation delayed the physical growth and neurodevelopment of the offspring in a sex-independent manner. In addition, maternal undernutrition negatively affected offspring's juvenile social play, motivation, exploratory activity and risk assessment behaviors. These findings show that protein restriction during critical periods of development detrimentally program progeny behavior.
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Affiliation(s)
- Laura M Belluscio
- Laboratorio de Biología Molecular, Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria Pabellón II, 1428 Ciudad de Buenos Aires, Argentina
| | - Bruno G Berardino
- Laboratorio de Biología Molecular, Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria Pabellón II, 1428 Ciudad de Buenos Aires, Argentina
| | - Nadina M Ferroni
- Laboratorio de Biología Molecular, Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria Pabellón II, 1428 Ciudad de Buenos Aires, Argentina
| | - Julieta M Ceruti
- Laboratorio de Biología Molecular, Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria Pabellón II, 1428 Ciudad de Buenos Aires, Argentina
| | - Eduardo T Cánepa
- Laboratorio de Biología Molecular, Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria Pabellón II, 1428 Ciudad de Buenos Aires, Argentina.
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29
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Prenatal exposure to fenugreek impairs sensorimotor development and the operation of spinal cord networks in mice. PLoS One 2013; 8:e80013. [PMID: 24224030 PMCID: PMC3818278 DOI: 10.1371/journal.pone.0080013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Accepted: 09/27/2013] [Indexed: 11/19/2022] Open
Abstract
Fenugreek is a medicinal plant whose seeds are widely used in traditional medicine, mainly for its laxative, galactagogue and antidiabetic effects. However, consumption of fenugreek seeds during pregnancy has been associated with a range of congenital malformations, including hydrocephalus, anencephaly and spina bifida in humans. The present study was conducted to evaluate the effects of prenatal treatment of fenugreek seeds on the development of sensorimotor functions from birth to young adults. Pregnant mice were treated by gavage with 1g/kg/day of lyophilized fenugreek seeds aqueous extract (FSAE) or distilled water during the gestational period. Behavioral tests revealed in prenatally treated mice a significant delay in righting, cliff avoidance, negative geotaxis responses and the swimming development. In addition, extracellular recording of motor output in spinal cord isolated from neonatal mice showed that the frequency of spontaneous activity and fictive locomotion was reduced in FSAE-exposed mice. On the other hand, the cross-correlation coefficient in control mice was significantly more negative than in treated animals indicating that alternating patterns are deteriorated in FSAE-treated animals. At advanced age, prenatally treated mice displayed altered locomotor coordination in the rotarod test and also changes in static and dynamic parameters assessed by the CatWalk automated gait analysis system. We conclude that FSAE impairs sensorimotor and coordination functions not only in neonates but also in adult mice. Moreover, spinal neuronal networks are less excitable in prenatally FSAE-exposed mice suggesting that modifications within the central nervous system are responsible, at least in part, for the motor impairments.
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30
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Russmann V, Seeger N, Zellinger C, Hadamitzky M, Pankratova S, Wendt H, Bock E, Berezin V, Potschka H. The CNTF-derived peptide mimetic Cintrofin attenuates spatial-learning deficits in a rat post-status epilepticus model. Neurosci Lett 2013; 556:170-5. [DOI: 10.1016/j.neulet.2013.10.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Revised: 09/10/2013] [Accepted: 10/01/2013] [Indexed: 12/24/2022]
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31
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Corbett NJ, Gabbott PL, Klementiev B, Davies HA, Colyer FM, Novikova T, Stewart MG. Amyloid-beta induced CA1 pyramidal cell loss in young adult rats is alleviated by systemic treatment with FGL, a neural cell adhesion molecule-derived mimetic peptide. PLoS One 2013; 8:e71479. [PMID: 23951173 PMCID: PMC3739720 DOI: 10.1371/journal.pone.0071479] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Accepted: 06/29/2013] [Indexed: 12/24/2022] Open
Abstract
Increased levels of neurotoxic amyloid-beta in the brain are a prominent feature of Alzheimer's disease. FG-Loop (FGL), a neural cell adhesion molecule-derived peptide that corresponds to its second fibronectin type III module, has been shown to provide neuroprotection against a range of cellular insults. In the present study impairments in social recognition memory were seen 24 days after a 5 mg/15 µl amyloid-beta(25-35) injection into the right lateral ventricle of the young adult rat brain. This impairment was prevented if the animal was given a systemic treatment of FGL. Unbiased stereology was used to investigate the ability of FGL to alleviate the deleterious effects on CA1 pyramidal cells of the amyloid-beta(25-35) injection. NeuN, a neuronal marker (for nuclear staining) was used to identify pyramidal cells, and immunocytochemistry was also used to identify inactive glycogen synthase kinase 3beta (GSK3β) and to determine the effects of amyloid-beta(25-35) and FGL on the activation state of GSK3β, since active GSK3β has been shown to cause a range of AD pathologies. The cognitive deficits were not due to hippocampal atrophy as volume estimations of the entire hippocampus and its regions showed no significant loss, but amyloid-beta caused a 40% loss of pyramidal cells in the dorsal CA1 which was alleviated partially by FGL. However, FGL treatment without amyloid-beta was also found to cause a 40% decrease in CA1 pyramidal cells. The action of FGL may be due to inactivation of GSK3β, as an increased proportion of CA1 pyramidal neurons contained inactive GSK3β after FGL treatment. These data suggest that FGL, although potentially disruptive in non-pathological conditions, can be neuroprotective in disease-like conditions.
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Affiliation(s)
- Nicola J Corbett
- Open University, Department of Life, Health and Chemical Sciences, Milton Keynes, United Kingdom.
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32
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NCAM function in the adult brain: lessons from mimetic peptides and therapeutic potential. Neurochem Res 2013; 38:1163-73. [PMID: 23494903 DOI: 10.1007/s11064-013-1007-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2012] [Revised: 02/01/2013] [Accepted: 02/18/2013] [Indexed: 01/22/2023]
Abstract
Neural cell adhesion molecules (NCAMs) are complexes of transmembranal proteins critical for cell-cell interactions. Initially recognized as key players in the orchestration of developmental processes involving cell migration, cell survival, axon guidance, and synaptic targeting, they have been shown to retain these functions in the mature adult brain, in relation to plastic processes and cognitive abilities. NCAMs are able to interact among themselves (homophilic binding) as well as with other molecules (heterophilic binding). Furthermore, they are the sole molecule of the central nervous system undergoing polysialylation. Most interestingly polysialylated and non-polysialylated NCAMs display opposite properties. The precise contributions each of these characteristics brings in the regulations of synaptic and cellular plasticity in relation to cognitive processes in the adult brain are not yet fully understood. With the aim of deciphering the specific involvement of each interaction, recent developments led to the generation of NCAM mimetic peptides that recapitulate identified binding properties of NCAM. The present review focuses on the information such advances have provided in the understanding of NCAM contribution to cognitive function.
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33
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Ojo B, Gabbott PL, Rezaie P, Corbett N, Medvedev NI, Cowley TR, Lynch MA, Stewart MG. An NCAM mimetic, FGL, alters hippocampal cellular morphometry in young adult (4 month-old) rats. Neurochem Res 2012; 38:1208-18. [PMID: 23076631 DOI: 10.1007/s11064-012-0908-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2012] [Revised: 09/16/2012] [Accepted: 10/08/2012] [Indexed: 10/27/2022]
Abstract
The neural cell adhesion molecule, NCAM, is ubiquitously expressed within the CNS and has roles in development, cognition, neural plasticity and regulation of the immune system. NCAM is thus potentially an important pharmacological target for treatment of brain diseases. A cell adhesion mimetic FGL, a 15 amino-acid peptide derived from the second fibronectin type-III module of NCAM, has been shown to act as a neuroprotective agent in experimental disease and ageing models, restoring hippocampal/cognitive function and markedly alleviating deleterious changes in the CNS. However, the effects of FGL on the hippocampus of young healthy rats are unknown. The present study has examined the cellular neurobiological consequences of subcutaneous injections of FGL, on hippocampal cell morphometry in young (4 month-old) rats. We determined the effects of FGL on hippocampal volume, pyramidal neuron number/density (using unbiased quantitative stereology), and examined aspects of neurogenesis (using 2D morphometric analyses). FGL treatment reduced total volume of the dorsal hippocampus (associated with a decrease in total pyramidal neuron numbers in CA1 and CA3), and elevated the number of doublecortin immunolabeled neurons in the dentate gyrus, indicating a likely influence on neurogenesis in young healthy rats. These data indicate that FGL has a specific age dependent effect on the hippocampus, differing according to the development and maturity of the CNS.
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Affiliation(s)
- Bunmi Ojo
- Department of Life, Health and Chemical Sciences, The Open University, Walton Hall, Milton Keynes MK7 6AA, UK
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34
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Neuroprotective and memory enhancing properties of a dual agonist of the FGF receptor and NCAM. Neurobiol Dis 2012; 48:533-45. [PMID: 22842016 DOI: 10.1016/j.nbd.2012.07.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2011] [Revised: 05/31/2012] [Accepted: 07/17/2012] [Indexed: 12/20/2022] Open
Abstract
The fibroblast growth factor receptor (FGFR) plays a vital role in the development of the nervous system regulating a multitude of cellular processes. One of the interaction partners of the FGFR is the neural cell adhesion molecule (NCAM), which is known to play an important role in neuronal development, regeneration and synaptic plasticity. Thus, simultaneous activation of FGFR- and NCAM-mediated signaling pathways may be expected to affect processes underlying neurodegenerative diseases. We here report the identification of a peptide compound, Enreptin, capable of interacting with both FGFR and NCAM. We demonstrate that this dual specificity agonist induces phosphorylation of FGFR and differentiation and survival of primary neurons in vitro, and that these effects are inhibited by abrogation of both NCAM and FGFR signaling pathways. Furthermore, Enreptin crosses the blood-brain barrier after subcutaneous administration, enhances long-term memory in normal mice and ameliorates memory deficit in mice with induced brain inflammation. Moreover, Enreptin reduces cognitive impairment and neuronal death induced by Aβ25-35 in a rat model of Alzheimer's disease, and reduces the mortality rate and clinical signs of experimental autoimmune encephalomyelitis in rats. Thus, Enreptin is an attractive candidate for the treatment of neurological diseases.
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35
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Age-related changes in the hippocampus (loss of synaptophysin and glial-synaptic interaction) are modified by systemic treatment with an NCAM-derived peptide, FGL. Brain Behav Immun 2012; 26:778-88. [PMID: 21986303 DOI: 10.1016/j.bbi.2011.09.013] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2011] [Revised: 09/24/2011] [Accepted: 09/27/2011] [Indexed: 12/21/2022] Open
Abstract
Altered synaptic morphology, progressive loss of synapses and glial (astrocyte and microglial) cell activation are considered as characteristic hallmarks of aging. Recent evidence suggests that there is a concomitant age-related decrease in expression of the presynaptic protein, synaptophysin, and the neuronal glycoprotein CD200, which, by interacting with its receptor, plays a role in maintaining microglia in a quiescent state. These age-related changes may be indicative of reduced neuroglial support of synapses. FG Loop (FGL) peptide synthesized from the second fibronectin type III module of neural cell adhesion molecule (NCAM), has previously been shown to attenuate age-related glial cell activation, and to 'restore' cognitive function in aged rats. The mechanisms by which FGL exerts these neuroprotective effects remain unclear, but could involve regulation of CD200, modifying glial-synaptic interactions (affecting neuroglial 'support' at synapses), or impacting directly on synaptic function. Light and electron microscopic (EM) analyses were undertaken to investigate whether systemic treatment with FGL (i) alters CD200, synaptophysin (presynaptic) and PSD-95 (postsynaptic) immunohistochemical expression levels, (ii) affects synaptic number, or (iii) exerts any effects on glial-synaptic interactions within young (4 month-old) and aged (22 month-old) rat hippocampus. Treatment with FGL attenuated the age-related loss of synaptophysin immunoreactivity (-ir) within CA3 and hilus (with no major effect on PSD-95-ir), and of CD200-ir specifically in the CA3 region. Ultrastructural morphometric analyses showed that FGL treatment (i) prevented age-related loss in astrocyte-synaptic contacts, (ii) reduced microglia-synaptic contacts in the CA3 stratum radiatum, but (iii) had no effect on the mean number of synapses in this region. These data suggest that FGL mediates its neuroprotective effects by regulating glial-synaptic interaction.
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36
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Dmytriyeva O, Klementiev B, Berezin V, Bock E. Prenatal prochloraz treatment significantly increases pregnancy length and reduces offspring weight but does not affect social-olfactory memory in rats. ACTA ACUST UNITED AC 2012; 65:591-3. [PMID: 22727564 DOI: 10.1016/j.etp.2012.06.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2012] [Accepted: 06/04/2012] [Indexed: 11/19/2022]
Abstract
Metabolites of the commonly used imidazole fungicide prochloraz are androgen receptor antagonists. They have been shown to block androgen-driven development and compromise reproductive function. We tested the effect of prochloraz on cognitive behavior following exposure to this fungicide during the perinatal period. Pregnant Wistar rats were administered a 200 mg/kg dose of prochloraz on gestational day (GD) 7, GD11, and GD15. The social recognition test (SRT) was performed on 7-week-old male rat offspring. We found an increase in pregnancy length and a significantly reduced pup weight on PND15 and PND40 but no effect of prenatal prochloraz exposure on social investigation or acquisition of social-olfactory memory.
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Affiliation(s)
- Oksana Dmytriyeva
- Protein Laboratory, Institute of Neuroscience and Pharmacology, Panum Institute, Blegdamsvej 3C, Building 24.2, Copenhagen DK-2200, Denmark.
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37
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Knafo S, Esteban JA. Common pathways for growth and for plasticity. Curr Opin Neurobiol 2012; 22:405-11. [DOI: 10.1016/j.conb.2012.02.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2012] [Revised: 02/13/2012] [Accepted: 02/15/2012] [Indexed: 11/24/2022]
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38
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Knafo S, Venero C, Sánchez-Puelles C, Pereda-Peréz I, Franco A, Sandi C, Suárez LM, Solís JM, Alonso-Nanclares L, Martín ED, Merino-Serrais P, Borcel E, Li S, Chen Y, Gonzalez-Soriano J, Berezin V, Bock E, DeFelipe J, Esteban JA. Facilitation of AMPA receptor synaptic delivery as a molecular mechanism for cognitive enhancement. PLoS Biol 2012; 10:e1001262. [PMID: 22363206 PMCID: PMC3283560 DOI: 10.1371/journal.pbio.1001262] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2011] [Accepted: 01/05/2012] [Indexed: 11/19/2022] Open
Abstract
Cell adhesion molecules and downstream growth factor-dependent signaling are critical for brain development and synaptic plasticity, and they have been linked to cognitive function in adult animals. We have previously developed a mimetic peptide (FGL) from the neural cell adhesion molecule (NCAM) that enhances spatial learning and memory in rats. We have now investigated the cellular and molecular basis of this cognitive enhancement, using biochemical, morphological, electrophysiological, and behavioral analyses. We have found that FGL triggers a long-lasting enhancement of synaptic transmission in hippocampal CA1 neurons. This effect is mediated by a facilitated synaptic delivery of AMPA receptors, which is accompanied by enhanced NMDA receptor-dependent long-term potentiation (LTP). Both LTP and cognitive enhancement are mediated by an initial PKC activation, which is followed by persistent CaMKII activation. These results provide a mechanistic link between facilitation of AMPA receptor synaptic delivery and improved hippocampal-dependent learning, induced by a pharmacological cognitive enhancer.
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Affiliation(s)
- Shira Knafo
- Centro de Biología Molecular “Severo Ochoa,” Consejo Superior de Investigaciones Científicas (CSIC)/Universidad Autónoma de Madrid, Madrid, Spain
- Instituto Cajal (CSIC), Centro de Tecnología Biomédica, Universidad Politécnica de Madrid, and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - César Venero
- Department of Psychobiology, Universidad Nacional de Educación a Distancia, Madrid, Spain
| | - Cristina Sánchez-Puelles
- Centro de Biología Molecular “Severo Ochoa,” Consejo Superior de Investigaciones Científicas (CSIC)/Universidad Autónoma de Madrid, Madrid, Spain
| | | | - Ana Franco
- Centro Nacional Biotecnología (CSIC), Universidad Autónoma de Madrid, Madrid, Spain
| | - Carmen Sandi
- Brain Mind Institute, Ecole Polytechnique Federale de Lausanne (EPFL), Switzerland
| | - Luz M. Suárez
- Instituto Cajal (CSIC), Centro de Tecnología Biomédica, Universidad Politécnica de Madrid, and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
- Servicio de Neurobiología-Investigación, Hospital Ramón y Cajal, IRYCIS, Madrid, Spain
| | - José M. Solís
- Servicio de Neurobiología-Investigación, Hospital Ramón y Cajal, IRYCIS, Madrid, Spain
| | - Lidia Alonso-Nanclares
- Instituto Cajal (CSIC), Centro de Tecnología Biomédica, Universidad Politécnica de Madrid, and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Eduardo D. Martín
- Departamento de Ciencias Médicas, Universidad de Castilla-la Mancha, Albacete, Spain
| | - Paula Merino-Serrais
- Instituto Cajal (CSIC), Centro de Tecnología Biomédica, Universidad Politécnica de Madrid, and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Erika Borcel
- Department of Psychobiology, Universidad Nacional de Educación a Distancia, Madrid, Spain
| | - Shizhong Li
- Protein Laboratory, Department of Neuroscience and Pharmacology, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Yongshuo Chen
- Protein Laboratory, Department of Neuroscience and Pharmacology, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Juncal Gonzalez-Soriano
- Department of Anatomy, Faculty of Veterinary Medicine, Complutense University, Madrid, Spain
| | - Vladimir Berezin
- Protein Laboratory, Department of Neuroscience and Pharmacology, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Elisabeth Bock
- Protein Laboratory, Department of Neuroscience and Pharmacology, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Javier DeFelipe
- Instituto Cajal (CSIC), Centro de Tecnología Biomédica, Universidad Politécnica de Madrid, and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - José A. Esteban
- Centro de Biología Molecular “Severo Ochoa,” Consejo Superior de Investigaciones Científicas (CSIC)/Universidad Autónoma de Madrid, Madrid, Spain
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39
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A neural cell adhesion molecule-derived peptide, FGL, attenuates glial cell activation in the aged hippocampus. Exp Neurol 2011; 232:318-28. [DOI: 10.1016/j.expneurol.2011.09.025] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2011] [Revised: 08/10/2011] [Accepted: 09/15/2011] [Indexed: 01/09/2023]
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40
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Dallerac G, Zerwas M, Novikova T, Callu D, Leblanc-Veyrac P, Bock E, Berezin V, Rampon C, Doyere V. The neural cell adhesion molecule-derived peptide FGL facilitates long-term plasticity in the dentate gyrus in vivo. Learn Mem 2011; 18:306-13. [DOI: 10.1101/lm.2154311] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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41
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Køhler LB, Christensen C, Rossetti C, Fantin M, Sandi C, Bock E, Berezin V. Dennexin peptides modeled after the homophilic binding sites of the neural cell adhesion molecule (NCAM) promote neuronal survival, modify cell adhesion and impair spatial learning. Eur J Cell Biol 2010; 89:817-27. [DOI: 10.1016/j.ejcb.2010.07.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2010] [Revised: 06/22/2010] [Accepted: 07/12/2010] [Indexed: 02/03/2023] Open
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42
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Zou Z, Zheng Q, Wu Y, Guo X, Yang S, Li J, Pan H. Biocompatibility and bioactivity of designer self-assembling nanofiber scaffold containing FGL motif for rat dorsal root ganglion neurons. J Biomed Mater Res A 2010; 95:1125-31. [PMID: 20878982 DOI: 10.1002/jbm.a.32910] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2009] [Revised: 05/25/2010] [Accepted: 06/07/2010] [Indexed: 11/07/2022]
Abstract
We report here a designer self-assembling peptide nanofiber scaffold developed specifically for nerve tissue engineering. We synthesized a peptide FGL-RADA containing FGL (EVYVVAENQQGKSKA), the motif of neural cell adhesion molecule (NCAM), and then attended to make a FGL nanofiber scaffold (FGL-NS) by assembling FGL-RADA with the peptide RADA-16 (AcN-RADARADARADARADA-CONH2). The microstructures of the scaffolds were tested using atomic force microscopy (AFM), and rheological properties of materials were accessed. Then we demonstrated the biocompatibility and bioactivity of FGL-NS for rat dorsal root ganglion neurons (DRGn). We found that the designer self-assembling peptide scaffold was noncytotoxic to neurons and able to promote adhesion and neurite sprouting of neurons. Our results indicate that the designer peptide scaffold containing FGL had excellent biocompatibility and bioactivity with adult sensory neurons and could be used for neuronal regeneration.
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Affiliation(s)
- Zhenwei Zou
- Department of Orthopaedics, Union Hospital, Tongji Medical College of Huazhong, University of Science and Technology, Wuhan, China
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43
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Zhang Y, Li N, Yang J, Zhang T, Yang Z. Effects of maternal food restriction on physical growth and neurobehavior in newborn Wistar rats. Brain Res Bull 2010; 83:1-8. [DOI: 10.1016/j.brainresbull.2010.06.005] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2009] [Revised: 06/07/2010] [Accepted: 06/10/2010] [Indexed: 11/25/2022]
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44
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Sonn K, Pankratova S, Korshunova I, Zharkovsky A, Bock E, Berezin V, Kiryushko D. A metallothionein mimetic peptide protects neurons against kainic acid-induced excitotoxicity. J Neurosci Res 2010; 88:1074-82. [PMID: 19937811 DOI: 10.1002/jnr.22281] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Metallothioneins I and II (MTI/II) are metal-binding proteins overexpressed in response to brain injury. Recently, we have designed a peptide, termed EmtinB, which is modeled after the beta-domain of MT-II and mimics the biological effects of MTI/II in vitro. Here, we demonstrate the neuroprotective effect of EmtinB in the in vitro and in vivo models of kainic acid (KA)-induced neurotoxicity. We show that EmtinB passes the blood-brain barrier and is detectable in plasma for up to 24 hr. Treatment with EmtinB significantly attenuates seizures in C57BL/6J mice exposed to moderate (20 mg/kg) and high (30 mg/kg) KA doses and tends to decrease mortality induced by the high KA dose. Histopathological evaluation of hippocampal (CA3 and CA1) and cortical areas of mice treated with 20 mg/kg KA shows that EmtinB treatment reduces KA-induced neurodegeneration in the CA1 region. These findings establish EmtinB as a promising target for therapeutic development.
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Affiliation(s)
- Katrin Sonn
- Protein Laboratory, Department of Neuroscience and Pharmacology, Panum Institute, Copenhagen, Denmark
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45
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Neuritogenic and neuroprotective properties of peptide agonists of the fibroblast growth factor receptor. Int J Mol Sci 2010; 11:2291-305. [PMID: 20640153 PMCID: PMC2904917 DOI: 10.3390/ijms11062291] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2010] [Accepted: 05/21/2010] [Indexed: 11/17/2022] Open
Abstract
Fibroblast growth factor receptors (FGFRs) interact with their cognate ligands, FGFs, and with a number of cell adhesion molecules (CAMs), such as the neural cell adhesion molecule (NCAM), mediating a wide range of events during the development and maintenance of the nervous system. Determination of protein structure, in silico modeling and biological studies have recently resulted in the identification of FGFR binding peptides derived from various FGFs and NCAM mimicking the effects of these molecules with regard to their neuritogenic and neuroprotective properties. This review focuses on recently developed functional peptide agonists of FGFR with possible therapeutic potential.
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Rudenko O, Tkach V, Berezin V, Bock E. Effects of FGF receptor peptide agonists on animal behavior under normal and pathological conditions. Neurosci Res 2010; 68:35-43. [PMID: 20562017 DOI: 10.1016/j.neures.2010.05.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2009] [Revised: 04/25/2010] [Accepted: 05/10/2010] [Indexed: 01/19/2023]
Abstract
Hexafins are recently identified low-molecular-weight peptide agonists of the fibroblast growth factor receptor (FGFR), derived from the beta6-beta7 loop region of various FGFs. Synthetic hexafin peptides have been shown to bind to and induce tyrosine phosphorylation of FGFR1, stimulate neurite outgrowth, and promote neuronal survival in vitro. Thus, the pronounced biological activities of hexafins in vitro make them attractive compounds for pharmacological studies in vivo. The present study investigated the effects of subcutaneous administration of hexafin1 and hexafin2 (peptides derived from FGF1 and FGF2, respectively) on social memory, exploratory activity, and anxiety-like behavior in adult rats. Treatment with hexafin1 and hexafin2 resulted in prolonged retention of social memory. Furthermore, rats treated with hexafin2 exhibited decreased anxiety-like behavior in the elevated plus maze. Employing an R6/2 mouse model of Huntington's disease (HD), we found that although hexafin2 did not affect the progression of motor symptoms, it alleviated deficits in activity related to social behavior, including sociability and social novelty. Thus, hexafin2 may have therapeutic potential for the treatment of HD.
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Affiliation(s)
- Olga Rudenko
- Protein Laboratory, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark.
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Pankratova S, Kiryushko D, Sonn K, Soroka V, Køhler LB, Rathje M, Gu B, Gotfryd K, Clausen O, Zharkovsky A, Bock E, Berezin V. Neuroprotective properties of a novel, non-haematopoietic agonist of the erythropoietin receptor. Brain 2010; 133:2281-94. [DOI: 10.1093/brain/awq101] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Stewart M, Popov V, Medvedev N, Gabbott P, Corbett N, Kraev I, Davies H. Dendritic spine and synapse morphological alterations induced by a neural cell adhesion molecule mimetic. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2010; 663:373-83. [PMID: 20017034 DOI: 10.1007/978-1-4419-1170-4_23] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Michael Stewart
- Department of Life Sciences, Faculty of Sciences, The Open University, Walton Hall, Milton Keynes, MK76AA, UK.
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NCAM in long-term potentiation and learning. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2010; 663:257-70. [PMID: 20017028 DOI: 10.1007/978-1-4419-1170-4_17] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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A novel anti-inflammatory role of NCAM-derived mimetic peptide, FGL. Neurobiol Aging 2010; 31:118-28. [DOI: 10.1016/j.neurobiolaging.2008.03.017] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2007] [Revised: 03/03/2008] [Accepted: 03/20/2008] [Indexed: 11/22/2022]
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