1
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Shanks HRC, Chen K, Reiman EM, Blennow K, Cummings JL, Massa SM, Longo FM, Börjesson-Hanson A, Windisch M, Schmitz TW. p75 neurotrophin receptor modulation in mild to moderate Alzheimer disease: a randomized, placebo-controlled phase 2a trial. Nat Med 2024; 30:1761-1770. [PMID: 38760589 PMCID: PMC11186782 DOI: 10.1038/s41591-024-02977-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 04/04/2024] [Indexed: 05/19/2024]
Abstract
p75 neurotrophin receptor (p75NTR) signaling pathways substantially overlap with degenerative networks active in Alzheimer disease (AD). Modulation of p75NTR with the first-in-class small molecule LM11A-31 mitigates amyloid-induced and pathological tau-induced synaptic loss in preclinical models. Here we conducted a 26-week randomized, placebo-controlled, double-blinded phase 2a safety and exploratory endpoint trial of LM11A-31 in 242 participants with mild to moderate AD with three arms: placebo, 200 mg LM11A-31 and 400 mg LM11A-31, administered twice daily by oral capsules. This trial met its primary endpoint of safety and tolerability. Within the prespecified secondary and exploratory outcome domains (structural magnetic resonance imaging, fluorodeoxyglucose positron-emission tomography and cerebrospinal fluid biomarkers), significant drug-placebo differences were found, consistent with the hypothesis that LM11A-31 slows progression of pathophysiological features of AD; no significant effect of active treatment was observed on cognitive tests. Together, these results suggest that targeting p75NTR with LM11A-31 warrants further investigation in larger-scale clinical trials of longer duration. EU Clinical Trials registration: 2015-005263-16 ; ClinicalTrials.gov registration: NCT03069014 .
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Grants
- R35 AG071476 NIA NIH HHS
- P30 AG072980 NIA NIH HHS
- SG-23-1038904 QC Alzheimer's Association
- 2022-00732 Vetenskapsrådet (Swedish Research Council)
- P20 GM109025 NIGMS NIH HHS
- R01 AG053798 NIA NIH HHS
- R35AG71476 U.S. Department of Health & Human Services | NIH | National Institute on Aging (U.S. National Institute on Aging)
- ZEN-21-848495 Alzheimer's Association
- R01 AG051596 NIA NIH HHS
- P20GM109025 U.S. Department of Health & Human Services | NIH | National Institute of General Medical Sciences (NIGMS)
- 453677 Gouvernement du Canada | Canadian Institutes of Health Research (Instituts de Recherche en Santé du Canada)
- P20 AG068053 NIA NIH HHS
- 2017-00915 Vetenskapsrådet (Swedish Research Council)
- U01 AG024904 NIA NIH HHS
- R01AG053798 U.S. Department of Health & Human Services | NIH | National Institute on Aging (U.S. National Institute on Aging)
- R25 AG083721-01 U.S. Department of Health & Human Services | NIH | National Institute on Aging (U.S. National Institute on Aging)
- R25 AG083721 NIA NIH HHS
- Jonathan and Joshua Memorial Foundation Government of Ontario
- U.S. Department of Health & Human Services | NIH | National Institute on Aging (U.S. National Institute on Aging)
- State of Arizona
- Alzheimer’s Association
- the Swedish state under the agreement between the Swedish government and the County Councils, the ALF-agreement (#ALFGBG-715986 and #ALFGBG-965240), the Swedish Alzheimer Foundation (#AF-930351, #AF-939721 and #AF-968270), Hjärnfonden, Sweden (#FO2017-0243 and #ALZ2022-0006), La Fondation Recherche Alzheimer (FRA), Paris, France, the Kirsten and Freddy Johansen Foundation, Copenhagen, Denmark, and Familjen Rönströms Stiftelse, Stockholm, Sweden.
- U.S. Department of Health & Human Services | NIH | National Institute of General Medical Sciences (NIGMS)
- Alzheimer’s Drug Discovery Foundation (ADDF)
- Ted and Maria Quirk Endowment; Joy Chambers-Grundy Endowment.
- San Francisco VA Health Care System
- National Institutes of Aging (NIA AD Pilot Trial 1R01AG051596) PharmatrophiX (Menlo Park, California)
- Alzheimer’s Society of Canada (176677)
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Affiliation(s)
- Hayley R C Shanks
- Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada.
- Robarts Research Institute, Western University, London, Ontario, Canada.
- Western Institute for Neuroscience, Western University, London, Ontario, Canada.
| | - Kewei Chen
- Banner Alzheimer's Institute, Phoenix, AZ, USA
- College of Medicine-Phoenix, University of Arizona, Phoenix, AZ, USA
- College of Health Solutions, Arizona State University, Downtown, Phoenix, AZ, USA
| | - Eric M Reiman
- Banner Alzheimer's Institute, Phoenix, AZ, USA
- College of Medicine-Phoenix, University of Arizona, Phoenix, AZ, USA
- Translational Genomics Research Institute, Phoenix, AZ, USA
- Arizona Alzheimer's Consortium, Phoenix, AZ, USA
- ASU-Banner Neurodegenerative Disease Research Center, Arizona State University, Tempe, AZ, USA
| | - Kaj Blennow
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Mölndal, Sweden
- Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden
| | - Jeffrey L Cummings
- Chambers-Grundy Center for Transformative Neuroscience, Department of Brain Health, School of Integrated Health Sciences, University of Nevada Las Vegas (UNLV), Las Vegas, NV, USA
| | - Stephen M Massa
- San Francisco Veterans Affairs Health Care System, San Francisco, CA, USA
- Department of Neurology, University of California, San Francisco, San Francisco, CA, USA
| | | | - Anne Börjesson-Hanson
- Clinical Trials, Department of Aging, Karolinska University Hospital, Stockholm, Sweden
| | | | - Taylor W Schmitz
- Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada.
- Robarts Research Institute, Western University, London, Ontario, Canada.
- Western Institute for Neuroscience, Western University, London, Ontario, Canada.
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2
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Santi MD, Carvalho D, Dapueto R, Bentura M, Zeni M, Martínez-González L, Martínez A, Peralta MA, Rey A, Giglio J, Ortega MG, Savio E, Abin-Carriquiry JA, Arredondo F. Prenylated Flavanone Isolated from Dalea Species as a Potential Multitarget-Neuroprotector in an In Vitro Alzheimer's Disease Mice Model. Neurotox Res 2024; 42:23. [PMID: 38578482 DOI: 10.1007/s12640-024-00703-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 12/04/2023] [Accepted: 03/25/2024] [Indexed: 04/06/2024]
Abstract
Alzheimer's disease (AD) involves a neurodegenerative process that has not yet been prevented, reversed, or stopped. Continuing with the search for natural pharmacological treatments, flavonoids are a family of compounds with proven neuroprotective effects and multi-targeting behavior. The American genus Dalea L. (Fabaceae) is an important source of bioactive flavonoids. In this opportunity, we tested the neuroprotective potential of three prenylated flavanones isolated from Dalea species in a new in vitro pre-clinical AD model previously developed by us. Our approach consisted in exposing neural cells to conditioned media (3xTg-AD ACM) from neurotoxic astrocytes derived from hippocampi and cortices of old 3xTg-AD mice, mimicking a local neurodegenerative microenvironment. Flavanone 1 and 3 showed a neuroprotective effect against 3xTg-AD ACM, being 1 more active than 3. The structural requirements to afford neuroprotective activity in this model are a 5'-dimethylallyl and 4'-hydroxy at the B ring. In order to search the mechanistic performance of the most active flavanone, we focus on the flavonoid-mediated regulation of GSK-3β-mediated tau phosphorylation previously reported. Flavanone 1 treatment decreased the rise of hyperphosphorylated tau protein neuronal levels induced after 3xTg-AD ACM exposure and inhibited the activity of GSK-3β. Finally, direct exposure of these neurotoxic 3xTg-AD astrocytes to flavanone 1 resulted in toxicity to these cells and reduced the neurotoxicity of 3xTg-AD ACM as well. Our results allow us to present compound 1 as a natural prenylated flavanone that could be used as a precursor to development and design of future drug therapies for AD.
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Affiliation(s)
- Maria D Santi
- Instituto Multidisciplinario de Biología Vegetal (IMBIV-CONICET), Ciudad Universitaria. X5000HUA, Córdoba, Argentina
- I+D Biomédico y Química Farmacéutica, Centro Uruguayo de Imagenología Molecular (CUDIM), Montevideo, Uruguay
| | - Diego Carvalho
- Departamento de Neuroquímica, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, 11600, Uruguay
- Área de Matemática - DETEMA, Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - Rosina Dapueto
- I+D Biomédico y Química Farmacéutica, Centro Uruguayo de Imagenología Molecular (CUDIM), Montevideo, Uruguay
| | - Manuela Bentura
- I+D Biomédico y Química Farmacéutica, Centro Uruguayo de Imagenología Molecular (CUDIM), Montevideo, Uruguay
| | - Maia Zeni
- I+D Biomédico y Química Farmacéutica, Centro Uruguayo de Imagenología Molecular (CUDIM), Montevideo, Uruguay
- Área de Radioquímica, Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - Loreto Martínez-González
- Centro de Investigaciones Biológicas Margarita Salas, CSIC, Calle Ramiro Maétzu 9, Madrid, 28040, Spain
- Centro de Investigación Biomédica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), Instituto de Salud Carlos III, Avda Monforte de Lemos 3-5, Madrid, 28029, Spain
| | - Ana Martínez
- Centro de Investigaciones Biológicas Margarita Salas, CSIC, Calle Ramiro Maétzu 9, Madrid, 28040, Spain
- Centro de Investigación Biomédica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), Instituto de Salud Carlos III, Avda Monforte de Lemos 3-5, Madrid, 28029, Spain
| | - Mariana A Peralta
- Instituto Multidisciplinario de Biología Vegetal (IMBIV-CONICET), Ciudad Universitaria. X5000HUA, Córdoba, Argentina
- Farmacognosia, Departamento de Ciencias Farmacéuticas, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, Haya de la torre y Medina Allende, Edificio Ciencias II, X5000HUA Córdoba, Córdoba, Argentina
| | - Ana Rey
- Área de Radioquímica, Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - Javier Giglio
- I+D Biomédico y Química Farmacéutica, Centro Uruguayo de Imagenología Molecular (CUDIM), Montevideo, Uruguay
- Área de Radioquímica, Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - Maria G Ortega
- Instituto Multidisciplinario de Biología Vegetal (IMBIV-CONICET), Ciudad Universitaria. X5000HUA, Córdoba, Argentina
- Farmacognosia, Departamento de Ciencias Farmacéuticas, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, Haya de la torre y Medina Allende, Edificio Ciencias II, X5000HUA Córdoba, Córdoba, Argentina
| | - Eduardo Savio
- I+D Biomédico y Química Farmacéutica, Centro Uruguayo de Imagenología Molecular (CUDIM), Montevideo, Uruguay
| | | | - Florencia Arredondo
- I+D Biomédico y Química Farmacéutica, Centro Uruguayo de Imagenología Molecular (CUDIM), Montevideo, Uruguay.
- Departamento de Neuroquímica, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, 11600, Uruguay.
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3
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Carvalho D, Diaz-Amarilla P, Dapueto R, Santi MD, Duarte P, Savio E, Engler H, Abin-Carriquiry JA, Arredondo F. Transcriptomic Analyses of Neurotoxic Astrocytes Derived from Adult Triple Transgenic Alzheimer's Disease Mice. J Mol Neurosci 2023; 73:487-515. [PMID: 37318736 DOI: 10.1007/s12031-023-02105-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 02/03/2023] [Indexed: 06/16/2023]
Abstract
Neurodegenerative diseases such as Alzheimer's disease have been classically studied from a purely neuronocentric point of view. More recent evidences support the notion that other cell populations are involved in disease progression. In this sense, the possible pathogenic role of glial cells like astrocytes is increasingly being recognized. Once faced with tissue damage signals and other stimuli present in disease environments, astrocytes suffer many morphological and functional changes, a process referred as reactive astrogliosis. Studies from murine models and humans suggest that these complex and heterogeneous responses could manifest as disease-specific astrocyte phenotypes. Clear understanding of disease-associated astrocytes is a necessary step to fully disclose neurodegenerative processes, aiding in the design of new therapeutic and diagnostic strategies. In this work, we present the transcriptomics characterization of neurotoxic astrocytic cultures isolated from adult symptomatic animals of the triple transgenic mouse model of Alzheimer's disease (3xTg-AD). According to the observed profile, 3xTg-AD neurotoxic astrocytes show various reactivity features including alteration of the extracellular matrix and release of pro-inflammatory and proliferative factors that could result in harmful effects to neurons. Moreover, these alterations could be a consequence of stress responses at the endoplasmic reticulum and mitochondria as well as of concomitant metabolic adaptations. Present results support the hypothesis that adaptive changes of astrocytic function induced by a stressed microenvironment could later promote harmful astrocyte phenotypes and further accelerate or induce neurodegenerative processes.
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Affiliation(s)
- Diego Carvalho
- Departamento de Neuroquímica, Instituto de Investigaciones Biológicas Clemente Estable, 11600, Montevideo, Uruguay
| | - Pablo Diaz-Amarilla
- Área I+D Biomédica, Centro Uruguayo de Imagenología Molecular, 11600, Montevideo, Uruguay
| | - Rosina Dapueto
- Área I+D Biomédica, Centro Uruguayo de Imagenología Molecular, 11600, Montevideo, Uruguay
| | - María Daniela Santi
- Área I+D Biomédica, Centro Uruguayo de Imagenología Molecular, 11600, Montevideo, Uruguay
- College of Dentistry, Bluestone Center for Clinical Research, New York University, New York, 10010, USA
| | - Pablo Duarte
- Área I+D Biomédica, Centro Uruguayo de Imagenología Molecular, 11600, Montevideo, Uruguay
| | - Eduardo Savio
- Área I+D Biomédica, Centro Uruguayo de Imagenología Molecular, 11600, Montevideo, Uruguay
| | - Henry Engler
- Área I+D Biomédica, Centro Uruguayo de Imagenología Molecular, 11600, Montevideo, Uruguay
- Facultad de Medicina, Universidad de la República, 1800, Montevideo, Uruguay
| | - Juan A Abin-Carriquiry
- Departamento de Neuroquímica, Instituto de Investigaciones Biológicas Clemente Estable, 11600, Montevideo, Uruguay.
- Laboratorio de Biofármacos, Institut Pasteur de Montevideo, 11600, Montevideo, Uruguay.
| | - Florencia Arredondo
- Departamento de Neuroquímica, Instituto de Investigaciones Biológicas Clemente Estable, 11600, Montevideo, Uruguay.
- Área I+D Biomédica, Centro Uruguayo de Imagenología Molecular, 11600, Montevideo, Uruguay.
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4
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The Nerve Growth Factor Receptor (NGFR/p75 NTR): A Major Player in Alzheimer's Disease. Int J Mol Sci 2023; 24:ijms24043200. [PMID: 36834612 PMCID: PMC9965628 DOI: 10.3390/ijms24043200] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 02/01/2023] [Accepted: 02/03/2023] [Indexed: 02/09/2023] Open
Abstract
Alzheimer's disease (AD) represents the most prevalent type of dementia in elderly people, primarily characterized by brain accumulation of beta-amyloid (Aβ) peptides, derived from Amyloid Precursor Protein (APP), in the extracellular space (amyloid plaques) and intracellular deposits of the hyperphosphorylated form of the protein tau (p-tau; tangles or neurofibrillary aggregates). The Nerve growth factor receptor (NGFR/p75NTR) represents a low-affinity receptor for all known mammalians neurotrophins (i.e., proNGF, NGF, BDNF, NT-3 e NT-4/5) and it is involved in pathways that determine both survival and death of neurons. Interestingly, also Aβ peptides can blind to NGFR/p75NTR making it the "ideal" candidate in mediating Aβ-induced neuropathology. In addition to pathogenesis and neuropathology, several data indicated that NGFR/p75NTR could play a key role in AD also from a genetic perspective. Other studies suggested that NGFR/p75NTR could represent a good diagnostic tool, as well as a promising therapeutic target for AD. Here, we comprehensively summarize and review the current experimental evidence on this topic.
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5
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Dolotov OV, Inozemtseva LS, Myasoedov NF, Grivennikov IA. Stress-Induced Depression and Alzheimer's Disease: Focus on Astrocytes. Int J Mol Sci 2022; 23:4999. [PMID: 35563389 PMCID: PMC9104432 DOI: 10.3390/ijms23094999] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 04/25/2022] [Accepted: 04/28/2022] [Indexed: 02/06/2023] Open
Abstract
Neurodegenerative diseases and depression are multifactorial disorders with a complex and poorly understood physiopathology. Astrocytes play a key role in the functioning of neurons in norm and pathology. Stress is an important factor for the development of brain disorders. Here, we review data on the effects of stress on astrocyte function and evidence of the involvement of astrocyte dysfunction in depression and Alzheimer's disease (AD). Stressful life events are an important risk factor for depression; meanwhile, depression is an important risk factor for AD. Clinical data indicate atrophic changes in the same areas of the brain, the hippocampus and prefrontal cortex (PFC), in both pathologies. These brain regions play a key role in regulating the stress response and are most vulnerable to the action of glucocorticoids. PFC astrocytes are critically involved in the development of depression. Stress alters astrocyte function and can result in pyroptotic death of not only neurons, but also astrocytes. BDNF-TrkB system not only plays a key role in depression and in normalizing the stress response, but also appears to be an important factor in the functioning of astrocytes. Astrocytes, being a target for stress and glucocorticoids, are a promising target for the treatment of stress-dependent depression and AD.
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Affiliation(s)
- Oleg V. Dolotov
- Institute of Molecular Genetics of National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia; (O.V.D.); (L.S.I.); (N.F.M.)
- Faculty of Biology, Lomonosov Moscow State University, Leninskie Gory, 119234 Moscow, Russia
| | - Ludmila S. Inozemtseva
- Institute of Molecular Genetics of National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia; (O.V.D.); (L.S.I.); (N.F.M.)
| | - Nikolay F. Myasoedov
- Institute of Molecular Genetics of National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia; (O.V.D.); (L.S.I.); (N.F.M.)
| | - Igor A. Grivennikov
- Institute of Molecular Genetics of National Research Centre “Kurchatov Institute”, 123182 Moscow, Russia; (O.V.D.); (L.S.I.); (N.F.M.)
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6
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Fading memories in aging and neurodegeneration: Is p75 neurotrophin receptor a culprit? Ageing Res Rev 2022; 75:101567. [PMID: 35051645 DOI: 10.1016/j.arr.2022.101567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 12/12/2021] [Accepted: 01/12/2022] [Indexed: 11/22/2022]
Abstract
Aging and age-related neurodegenerative diseases have become one of the major concerns in modern times as cognitive abilities tend to decline when we get older. It is well known that the main cause of this age-related cognitive deficit is due to aberrant changes in cellular, molecular circuitry and signaling pathways underlying synaptic plasticity and neuronal connections. The p75 neurotrophin receptor (p75NTR) is one of the important mediators regulating the fate of the neurons in the nervous system. Its importance in neuronal apoptosis is well documented. However, the mechanisms involving the regulation of p75NTR in synaptic plasticity and cognitive function remain obscure, although cognitive impairment has been associated with a higher expression of p75NTR in neurons. In this review, we discuss the current understanding of how neurons are influenced by p75NTR function to maintain normal neuronal synaptic strength and connectivity, particularly to support learning and memory in the hippocampus. We then discuss the age-associated alterations in neurophysiological mechanisms of synaptic plasticity and cognitive function. Furthermore, we also describe current evidence that has begun to elucidate how p75NTR regulates synaptic changes in aging and age-related neurodegenerative diseases, focusing on the hippocampus. Elucidating the role that p75NTR signaling plays in regulating synaptic plasticity will contribute to a better understanding of cognitive processes and pathological conditions. This will in turn provide novel approaches to improve therapies for the treatment of neurological diseases in which p75NTR dysfunction has been demonstrated.
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7
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Ma W, Yang JW, Wang XB, Luo T, Zhou L, Lagares A, Li H, Liang Z, Liu KP, Zang CH, Li CY, Wu Z, Guo JH, Zhou XF, Li LY. Negative regulation by proBDNF signaling of peripheral neurogenesis in the sensory ganglia of adult rats. Biomed Pharmacother 2021; 144:112273. [PMID: 34700232 DOI: 10.1016/j.biopha.2021.112273] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 09/27/2021] [Accepted: 09/27/2021] [Indexed: 12/31/2022] Open
Abstract
Neurogenesis in the adult brain is well recognized and plays a critical role in the maintenance of brain function and homeostasis. However, whether neurogenesis also occurs in the adult peripheral nervous system remains unknown. Here, using sensory ganglia (dorsal root ganglia, DRGs) as a model, we show that neurogenesis also occurs in the peripheral nervous system, but in a manner different from that in the central nervous system. Satellite glial cells (SGCs) express the neuronal precursor markers Nestin, POU domain, class 4, transcription factor 1, and p75 pan-neurotrophin receptor. Following sciatic nerve injury, the suppression of endogenous proBDNF by proBDNF antibodies resulted in the transformation of proliferating SGCs into doublecortin-positive cells in the DRGs. Using purified SGCs migrating out from the DRGs, the inhibition of endogenous proBDNF promoted the conversion of SGCs into neuronal phenotypes in vitro. Our findings suggest that SGCs are neuronal precursors, and that proBDNF maintains the SGC phenotype. Furthermore, the suppression of proBDNF signaling is necessary for neuronal phenotype acquisition by SGCs. Thus, we propose that peripheral neurogenesis may occur via the direct conversion of SGCs into neurons, and that this process is negatively regulated by proBDNF.
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Affiliation(s)
- Wei Ma
- Institute of Neuroscience, Kunming Medical University, Kunming 650500, Yunnan, China
| | - Jin-Wei Yang
- Second Department of General Surgery, First People's Hospital of Yunnan Province, Kunming 650032, Yunnan, China
| | - Xian-Bin Wang
- Institute of Neuroscience, Kunming Medical University, Kunming 650500, Yunnan, China; Department of Rehabilitation Medicine, Guizhou Medical University, Guiyang 550000, Guizhou, China
| | - Tao Luo
- Institute of Neuroscience, Kunming Medical University, Kunming 650500, Yunnan, China; Medical college of Panzhihua University, Panzhihua 617000, Sichuan, China
| | - Lei Zhou
- The Key Laboratory of Stem Cell and Regenerative Medicine of Yunnan Province, Institute of Molecular and Clinical Medicine, Kunming Medical University, Kunming 650500, Yunnan, China
| | - Alfonso Lagares
- Department of Neurosurgery, Hospital 12 de Octubre, Instituto de Investigación imas12, Universidad Complutense de Madrid, Madrid, Spain
| | - Hongyun Li
- Brain and Mind Centre, Sydney Medical School, The University of Sydney, NSW 2050, Australia
| | - Zhang Liang
- Institute of Neuroscience, Kunming Medical University, Kunming 650500, Yunnan, China
| | - Kuang-Pin Liu
- Institute of Neuroscience, Kunming Medical University, Kunming 650500, Yunnan, China
| | - Cheng-Hao Zang
- Second Department of General Surgery, First People's Hospital of Yunnan Province, Kunming 650032, Yunnan, China
| | - Chun-Yan Li
- Institute of Neuroscience, Kunming Medical University, Kunming 650500, Yunnan, China
| | - Zhen Wu
- Second Department of General Surgery, First People's Hospital of Yunnan Province, Kunming 650032, Yunnan, China
| | - Jian-Hui Guo
- Second Department of General Surgery, First People's Hospital of Yunnan Province, Kunming 650032, Yunnan, China.
| | - Xin-Fu Zhou
- School of Pharmacy and Medical Sciences, Sansom Institute, Faculty of Health Sciences, University of South Australia, Adelaide, SA 5000, Australia.
| | - Li-Yan Li
- Institute of Neuroscience, Kunming Medical University, Kunming 650500, Yunnan, China.
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8
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Jaudon F, Albini M, Ferroni S, Benfenati F, Cesca F. A developmental stage- and Kidins220-dependent switch in astrocyte responsiveness to brain-derived neurotrophic factor. J Cell Sci 2021; 134:jcs258419. [PMID: 34279618 DOI: 10.1242/jcs.258419] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Accepted: 07/12/2021] [Indexed: 10/20/2022] Open
Abstract
Astroglial cells are key to maintain nervous system homeostasis. Neurotrophins are known for their pleiotropic effects on neuronal physiology but also exert complex functions to glial cells. Here, we investigated (i) the signaling competence of mouse embryonic and postnatal primary cortical astrocytes exposed to brain-derived neurotrophic factor (BDNF) and, (ii) the role of kinase D-interacting substrate of 220 kDa (Kidins220), a transmembrane scaffold protein that mediates neurotrophin signaling in neurons. We found a shift from a kinase-based response in embryonic cells to a response predominantly relying on intracellular Ca2+ transients [Ca2+]i within postnatal cultures, associated with a decrease in the synthesis of full-length BDNF receptor TrkB, with Kidins220 contributing to the BDNF-activated kinase and [Ca2+]i pathways. Finally, Kidins220 participates in the homeostatic function of astrocytes by controlling the expression of the ATP-sensitive inward rectifier potassium channel 10 (Kir4.1) and the metabolic balance of embryonic astrocytes. Overall, our data contribute to the understanding of the complex role played by astrocytes within the central nervous system, and identify Kidins220 as a novel actor in the increasing number of pathologies characterized by astrocytic dysfunctions. This article has an associated First Person interview with the first authors of the paper.
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Affiliation(s)
- Fanny Jaudon
- Center for Synaptic Neuroscience and Technology, Istituto Italiano di Tecnologia, 16132 Genova, Italy
| | - Martina Albini
- Center for Synaptic Neuroscience and Technology, Istituto Italiano di Tecnologia, 16132 Genova, Italy
- Department of Experimental Medicine, University of Genova, 16132 Genova, Italy
| | - Stefano Ferroni
- Department of Pharmacy and Biotechnology, University of Bologna, 40126 Bologna, Italy
| | - Fabio Benfenati
- Center for Synaptic Neuroscience and Technology, Istituto Italiano di Tecnologia, 16132 Genova, Italy
- IRCCS Ospedale Policlinico San Martino, 16132 Genova, Italy
| | - Fabrizia Cesca
- Center for Synaptic Neuroscience and Technology, Istituto Italiano di Tecnologia, 16132 Genova, Italy
- Department of Life Sciences, University of Trieste, 34127 Trieste, Italy
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9
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Evidence of p75 Neurotrophin Receptor Involvement in the Central Nervous System Pathogenesis of Classical Scrapie in Sheep and a Transgenic Mouse Model. Int J Mol Sci 2021; 22:ijms22052714. [PMID: 33800240 PMCID: PMC7962525 DOI: 10.3390/ijms22052714] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/27/2021] [Accepted: 02/28/2021] [Indexed: 11/17/2022] Open
Abstract
Neurotrophins constitute a group of growth factor that exerts important functions in the nervous system of vertebrates. They act through two classes of transmembrane receptors: tyrosine-kinase receptors and the p75 neurotrophin receptor (p75NTR). The activation of p75NTR can favor cell survival or apoptosis depending on diverse factors. Several studies evidenced a link between p75NTR and the pathogenesis of prion diseases. In this study, we investigated the distribution of several neurotrophins and their receptors, including p75NTR, in the brain of naturally scrapie-affected sheep and experimentally infected ovinized transgenic mice and its correlation with other markers of prion disease. No evident changes in infected mice or sheep were observed regarding neurotrophins and their receptors except for the immunohistochemistry against p75NTR. Infected mice showed higher abundance of p75NTR immunostained cells than their non-infected counterparts. The astrocytic labeling correlated with other neuropathological alterations of prion disease. Confocal microscopy demonstrated the co-localization of p75NTR and the astrocytic marker GFAP, suggesting an involvement of astrocytes in p75NTR-mediated neurodegeneration. In contrast, p75NTR staining in sheep lacked astrocytic labeling. However, digital image analyses revealed increased labeling intensities in preclinical sheep compared with non-infected and terminal sheep in several brain nuclei. This suggests that this receptor is overexpressed in early stages of prion-related neurodegeneration in sheep. Our results confirm a role of p75NTR in the pathogenesis of classical ovine scrapie in both the natural host and in an experimental transgenic mouse model.
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Chen M, Guo L, Hao J, Ni J, Lv Q, Xin X, Liao H. p75NTR Promotes Astrocyte Proliferation in Response to Cortical Stab Wound. Cell Mol Neurobiol 2020; 42:1153-1166. [DOI: 10.1007/s10571-020-01006-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 11/11/2020] [Indexed: 01/15/2023]
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11
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Gonçalves NP, Yan Y, Ulrichsen M, Venø MT, Poulsen ET, Enghild JJ, Kjems J, Vægter CB. Modulation of Small RNA Signatures in Schwann-Cell-Derived Extracellular Vesicles by the p75 Neurotrophin Receptor and Sortilin. Biomedicines 2020; 8:E450. [PMID: 33114403 PMCID: PMC7694014 DOI: 10.3390/biomedicines8110450] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/20/2020] [Accepted: 10/22/2020] [Indexed: 12/12/2022] Open
Abstract
Schwann cells (SCs) are the main glial cells of the peripheral nervous system (PNS) and are known to be involved in various pathophysiological processes, such as diabetic neuropathy and nerve regeneration, through neurotrophin signaling. Such glial trophic support to axons, as well as neuronal survival/death signaling, has previously been linked to the p75 neurotrophin receptor (p75NTR) and its co-receptor Sortilin. Recently, SC-derived extracellular vesicles (EVs) were shown to be important for axon growth and nerve regeneration, but cargo of these glial cell-derived EVs has not yet been well-characterized. In this study, we aimed to characterize signatures of small RNAs in EVs derived from wild-type (WT) SCs and define differentially expressed small RNAs in EVs derived from SCs with genetic deletions of p75NTR (Ngfr-/-) or Sortilin (Sort1-/-). Using RNA sequencing, we identified a total of 366 miRNAs in EVs derived from WT SCs of which the most highly expressed are linked to the regulation of axonogenesis, axon guidance and axon extension, suggesting an involvement of SC EVs in axonal homeostasis. Signaling of SC EVs to non-neuronal cells was also suggested by the presence of several miRNAs important for regulation of the endothelial cell apoptotic process. Ablated p75NTR or sortilin expression in SCs translated into a set of differentially regulated tRNAs and miRNAs, with impact in autophagy and several cellular signaling pathways such as the phosphatidylinositol signaling system. With this work, we identified the global expression profile of small RNAs present in SC-derived EVs and provided evidence for a regulatory function of these vesicles on the homeostasis of other cell types of the PNS. Differentially identified miRNAs can pave the way to a better understanding of p75NTR and sortilin roles regarding PNS homeostasis and disease.
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Affiliation(s)
- Nádia P. Gonçalves
- Danish Research Institute of Translational Neuroscience (DANDRITE), Nordic-EMBL Partnership for Molecular Medicine, Department of Biomedicine, Aarhus University, 8000 Aarhus, Denmark; (M.U.); (C.B.V.)
| | - Yan Yan
- Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, 8000 Aarhus, Denmark; (Y.Y.); (M.T.V.); (J.K.)
- Omiics ApS, 8000 Aarhus, Denmark
| | - Maj Ulrichsen
- Danish Research Institute of Translational Neuroscience (DANDRITE), Nordic-EMBL Partnership for Molecular Medicine, Department of Biomedicine, Aarhus University, 8000 Aarhus, Denmark; (M.U.); (C.B.V.)
| | - Morten T. Venø
- Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, 8000 Aarhus, Denmark; (Y.Y.); (M.T.V.); (J.K.)
- Omiics ApS, 8000 Aarhus, Denmark
| | - Ebbe T. Poulsen
- Department of Molecular Biology and Genetics, Aarhus University, 8000 Aarhus, Denmark; (E.T.P.); (J.J.E.)
| | - Jan J. Enghild
- Department of Molecular Biology and Genetics, Aarhus University, 8000 Aarhus, Denmark; (E.T.P.); (J.J.E.)
| | - Jørgen Kjems
- Interdisciplinary Nanoscience Centre (iNANO), Aarhus University, 8000 Aarhus, Denmark; (Y.Y.); (M.T.V.); (J.K.)
- Department of Molecular Biology and Genetics, Aarhus University, 8000 Aarhus, Denmark; (E.T.P.); (J.J.E.)
| | - Christian B. Vægter
- Danish Research Institute of Translational Neuroscience (DANDRITE), Nordic-EMBL Partnership for Molecular Medicine, Department of Biomedicine, Aarhus University, 8000 Aarhus, Denmark; (M.U.); (C.B.V.)
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Linnerbauer M, Rothhammer V. Protective Functions of Reactive Astrocytes Following Central Nervous System Insult. Front Immunol 2020; 11:573256. [PMID: 33117368 PMCID: PMC7561408 DOI: 10.3389/fimmu.2020.573256] [Citation(s) in RCA: 117] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 09/14/2020] [Indexed: 12/14/2022] Open
Abstract
Astrocytes play important roles in numerous central nervous system disorders including autoimmune inflammatory, hypoxic, and degenerative diseases such as Multiple Sclerosis, ischemic stroke, and Alzheimer’s disease. Depending on the spatial and temporal context, activated astrocytes may contribute to the pathogenesis, progression, and recovery of disease. Recent progress in the dissection of transcriptional responses to varying forms of central nervous system insult has shed light on the mechanisms that govern the complexity of reactive astrocyte functions. While a large body of research focuses on the pathogenic effects of reactive astrocytes, little is known about how they limit inflammation and contribute to tissue regeneration. However, these protective astrocyte pathways might be of relevance for the understanding of the underlying pathology in disease and may lead to novel targeted approaches to treat autoimmune inflammatory and degenerative disorders of the central nervous system. In this review article, we have revisited the emerging concept of protective astrocyte functions and discuss their role in the recovery from inflammatory and ischemic disease as well as their role in degenerative disorders. Focusing on soluble astrocyte derived mediators, we aggregate the existing knowledge on astrocyte functions in the maintenance of homeostasis as well as their reparative and tissue-protective function after acute lesions and in neurodegenerative disorders. Finally, we give an outlook of how these mediators may guide future therapeutic strategies to tackle yet untreatable disorders of the central nervous system.
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Affiliation(s)
- Mathias Linnerbauer
- Department of Neurology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.,Department of Neurology, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - Veit Rothhammer
- Department of Neurology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.,Department of Neurology, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
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Gonçalves NP, Jager SE, Richner M, Murray SS, Mohseni S, Jensen TS, Vaegter CB. Schwann cell p75 neurotrophin receptor modulates small fiber degeneration in diabetic neuropathy. Glia 2020; 68:2725-2743. [PMID: 32658363 DOI: 10.1002/glia.23881] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 06/10/2020] [Accepted: 06/10/2020] [Indexed: 02/06/2023]
Abstract
Diabetic neuropathy has an incidence as high as 50% of diabetic patients and is characterized by damage to neurons, Schwann cells and blood vessels within the peripheral nervous system. The low-affinity neurotrophin receptor p75 (p75NTR ), particularly expressed by the Schwann cells in the peripheral nerve, has previously been reported to play a role in developmental myelination and cell survival/death. Increased levels of p75NTR , in the endoneurium and plasma from diabetic patients and rodent models of disease, have been observed, proposing that this receptor might be involved in the pathogenesis of diabetic neuropathy. Therefore, in this study, we addressed this hypothesis by utilizing a mouse model of selective nerve growth factor receptor (Ngfr) deletion in Schwann cells (SC-p75NTR -KO). Electron microscopy of sciatic nerves from mice with high fat diet induced obesity demonstrated how loss of Schwann cell-p75NTR aggravated axonal atrophy and loss of C-fibers. RNA sequencing disclosed several pre-clinical signaling alterations in the diabetic peripheral nerves, dependent on Schwann cell p75NTR signaling, specially related with lysosome, phagosome, and immune pathways. Morphological and biochemical analyses identified abundant lysosomes and autophagosomes in the C-fiber axoplasm of the diabetic SC-p75NTR -KO nerves, which together with increased Cathepsin B protein levels corroborates gene upregulation from the phagolysosomal pathways. Altogether, this study demonstrates that Schwann cell p75NTR deficiency amplifies diabetic neuropathy disease by triggering overactivation of immune-related pathways and increased lysosomal stress.
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Affiliation(s)
- Nádia P Gonçalves
- Department of Biomedicine, Danish Research Institute of Translational Neuroscience-DANDRITE, Nordic-EMBL Partnership for Molecular Medicine, Aarhus University, Aarhus C, Denmark.,International Diabetic Neuropathy Consortium (IDNC), Aarhus University Hospital, Aarhus N, Denmark
| | - Sara E Jager
- Department of Biomedicine, Danish Research Institute of Translational Neuroscience-DANDRITE, Nordic-EMBL Partnership for Molecular Medicine, Aarhus University, Aarhus C, Denmark.,Wolfson Centre for Age-Related Diseases, King's College London, London, UK
| | - Mette Richner
- Department of Biomedicine, Danish Research Institute of Translational Neuroscience-DANDRITE, Nordic-EMBL Partnership for Molecular Medicine, Aarhus University, Aarhus C, Denmark
| | - Simon S Murray
- Department of Anatomy and Neuroscience, The University of Melbourne, Melbourne, Victoria, Australia
| | - Simin Mohseni
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
| | - Troels S Jensen
- International Diabetic Neuropathy Consortium (IDNC), Aarhus University Hospital, Aarhus N, Denmark.,Department of Neurology and Danish Pain Research Center, Aarhus University, Aarhus C, Denmark
| | - Christian B Vaegter
- Department of Biomedicine, Danish Research Institute of Translational Neuroscience-DANDRITE, Nordic-EMBL Partnership for Molecular Medicine, Aarhus University, Aarhus C, Denmark.,International Diabetic Neuropathy Consortium (IDNC), Aarhus University Hospital, Aarhus N, Denmark
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Pinet-Charvet C, Fleurot R, Derouin-Tochon F, de Graaf S, Druart X, Tsikis G, Taragnat C, Teixeira-Gomes AP, Labas V, Moreau T, Cayla X, Duittoz AH. Beta-nerve growth factor stimulates spontaneous electrical activity of in vitro embryonic mouse GnRH neurons through a P75 mediated-mechanism. Sci Rep 2020; 10:10654. [PMID: 32606357 PMCID: PMC7326925 DOI: 10.1038/s41598-020-67665-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 06/11/2020] [Indexed: 02/04/2023] Open
Abstract
The control of ovulation helps guarantee the success of reproduction and as such, contributes to the fitness of a species. In mammals, two types of ovulation are observed: induced and spontaneous ovulation. Recent work on camelids, that are induced ovulators, highlighted the role of a factor present in seminal plasma, beta Nerve Growth Factor (β-NGF), as the factor that triggers ovulation in a GnRH dependent manner. In the present work, we characterized alpaca β-NGF (aβ-NGF) and its 3D structure and compared it with human recombinant β-NGF (hβ-NGF). We showed that the β-NGF enriched fraction of alpaca semen and the human recombinant protein, both stimulated spontaneous electrical activity of primary GnRH neurons derived from mouse embryonic olfactory placodes. This effect was dose-dependent and mediated by p75 receptor signaling. P75 receptors were found expressed in vitro by olfactory ensheathing cells (OEC) in close association with GnRH neurons and in vivo by tanycytes in close vicinity to GnRH fibers in adult mouse. Altogether, these results suggested that β-NGF induced ovulation through an increase in GnRH secretion provoked by a glial dependent P75 mediated mechanism.
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Affiliation(s)
- Caroline Pinet-Charvet
- Physiologie de la Reproduction et des Comportements (PRC) UMR7247 INRA, CNRS, Centre INRA Val de Loire, Université de Tours, IFCE, 37380, Nouzilly, France
- Physiologie de la Reproduction et des Comportements (PRC), ComUE Centre-Val de Loire, Centre INRA Val de Loire, Université de Poitiers, 37380, Nouzilly, France
| | - Renaud Fleurot
- Physiologie de la Reproduction et des Comportements (PRC) UMR7247 INRA, CNRS, Centre INRA Val de Loire, Université de Tours, IFCE, 37380, Nouzilly, France
| | - Flavie Derouin-Tochon
- Physiologie de la Reproduction et des Comportements (PRC) UMR7247 INRA, CNRS, Centre INRA Val de Loire, Université de Tours, IFCE, 37380, Nouzilly, France
| | - Simon de Graaf
- Faculty of Science, School of Life and Environmental Sciences, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Xavier Druart
- Physiologie de la Reproduction et des Comportements (PRC) UMR7247 INRA, CNRS, Centre INRA Val de Loire, Université de Tours, IFCE, 37380, Nouzilly, France
| | - Guillaume Tsikis
- Physiologie de la Reproduction et des Comportements (PRC) UMR7247 INRA, CNRS, Centre INRA Val de Loire, Université de Tours, IFCE, 37380, Nouzilly, France
| | - Catherine Taragnat
- Physiologie de la Reproduction et des Comportements (PRC) UMR7247 INRA, CNRS, Centre INRA Val de Loire, Université de Tours, IFCE, 37380, Nouzilly, France
| | - Ana-Paula Teixeira-Gomes
- Infectiologie et Santé Publique (ISP) UMR1282, INRA, Centre INRA Val de Loire, Université de Tours, 37380, Nouzilly, France
| | - Valérie Labas
- Physiologie de la Reproduction et des Comportements (PRC) UMR7247 INRA, CNRS, Centre INRA Val de Loire, Université de Tours, IFCE, 37380, Nouzilly, France
| | - Thierry Moreau
- Biologie des Oiseaux et Aviculture (BOA) UMR Centre INRA Val de Loire, 37380, Nouzilly, France
| | - Xavier Cayla
- Physiologie de la Reproduction et des Comportements (PRC) UMR7247 INRA, CNRS, Centre INRA Val de Loire, Université de Tours, IFCE, 37380, Nouzilly, France
| | - Anne H Duittoz
- Physiologie de la Reproduction et des Comportements (PRC) UMR7247 INRA, CNRS, Centre INRA Val de Loire, Université de Tours, IFCE, 37380, Nouzilly, France.
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15
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The Delayed-Onset Mechanical Pain Behavior Induced by Infant Peripheral Nerve Injury Is Accompanied by Sympathetic Sprouting in the Dorsal Root Ganglion. BIOMED RESEARCH INTERNATIONAL 2020; 2020:9165475. [PMID: 32626770 PMCID: PMC7315272 DOI: 10.1155/2020/9165475] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 05/02/2020] [Accepted: 05/19/2020] [Indexed: 11/19/2022]
Abstract
Background Sympathetic sprouting in the dorsal root ganglion (DRG) following nerve injuries had been proved to induce adult neuropathic pain. However, it is unclear whether the abnormal sprouting occurs in infant nerve injury. Methods L5 spinal nerve ligation (SNL) or sham surgery was performed on adult rats and 10-day-old pups, and mechanical thresholds and heat hyperalgesia were analyzed on 3, 7, 14, 28, and 56 postoperative days. Tyrosine hydroxylase-labeled sympathetic fibers were observed at each time point, and 2 neurotrophin receptors (p75NTR and TrkA) were identified to explore the mechanisms of sympathetic sprouting. Results Adult rats rapidly developed mechanical and heat hyperalgesia from postoperative day 3, with concurrent sympathetic sprouting in DRG. In contrast, the pup rats did not show a significantly lower mechanical threshold until postoperative day 28, at which time the sympathetic sprouting became evident in the DRG. No heat hyperalgesia was presented in pup rats at any time point. There was a late expression of glial p75NTR in DRG of pups from postoperative day 28, which was parallel to the occurrence of sympathetic sprouting. The expression of TrkA did not show such a postoperative syncing change. Conclusion The delayed-onset mechanical allodynia in the infant nerve lesion was accompanied with parallel sympathetic sprouting in DRG. The late parallel expression of glial p75NTR injury may play an essential role in this process, which provides novel insight into the treatment of delayed adolescent neuropathic pain.
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Wang Y, Tang H, Yang C, Zhao H, Jian C. Involvement of p75NTR in the effects of Aβ on L-type Ca2+ channel in cultured neuronal networks. Life Sci 2020; 243:117293. [DOI: 10.1016/j.lfs.2020.117293] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 12/29/2019] [Accepted: 01/07/2020] [Indexed: 12/22/2022]
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Brboric A, Vasylovska S, Saarimäki-Vire J, Espes D, Caballero-Corbalan J, Larfors G, Otonkoski T, Lau J. Characterization of neural crest-derived stem cells isolated from human bone marrow for improvement of transplanted islet function. Ups J Med Sci 2019; 124:228-237. [PMID: 31623497 PMCID: PMC6968573 DOI: 10.1080/03009734.2019.1658661] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Background: Murine boundary cap-derived neural crest stem cells (NCSCs) are capable of enhancing islet function by stimulating beta cell proliferation as well as increasing the neural and vascular density in the islets both in vitro and in vivo. This study aimed to isolate NCSC-like cells from human bone marrow.Methods: CD271 magnetic cell separation and culture techniques were used to purify a NCSC-enriched population of human bone marrow. Analyses of the CD271+ and CD271- fractions in terms of protein expression were performed, and the capacity of the CD271+ bone marrow cells to form 3-dimensional spheres when grown under non-adherent conditions was also investigated. Moreover, the NCSC characteristics of the CD271+ cells were evaluated by their ability to migrate toward human islets as well as human islet-like cell clusters (ICC) derived from pluripotent stem cells.Results: The CD271+ bone marrow population fulfilled the criterion of being multipotent stem cells, having the potential to differentiate into glial cells, neurons as well as myofibroblasts in vitro. They had the capacity to form 3-dimensional spheres as well as an ability to migrate toward human islets, further supporting their NCSC identity. Additionally, we demonstrated similar migration features toward stem cell-derived ICC.Conclusion: The results support the NCSC identity of the CD271-enriched human bone marrow population. It remains to investigate whether the human bone marrow-derived NCSCs have the ability to improve transplantation efficacy of not only human islets but stem cell-derived ICC as well.
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Affiliation(s)
- Anja Brboric
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
| | | | - Jonna Saarimäki-Vire
- Research Programs Unit, Molecular Neurology and Biomedicum Stem Cell Centre, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Daniel Espes
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | | | - Gunnar Larfors
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Timo Otonkoski
- Research Programs Unit, Molecular Neurology and Biomedicum Stem Cell Centre, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Joey Lau
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
- CONTACT Joey Lau Department of Medical Cell Biology, Uppsala University, Husargatan 3, Box 571, SE-751 23 Uppsala, Sweden
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18
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Jha MK, Lee Y, Russell KA, Yang F, Dastgheyb RM, Deme P, Ament XH, Chen W, Liu Y, Guan Y, Polydefkis MJ, Hoke A, Haughey NJ, Rothstein JD, Morrison BM. Monocarboxylate transporter 1 in Schwann cells contributes to maintenance of sensory nerve myelination during aging. Glia 2019; 68:161-177. [PMID: 31453649 DOI: 10.1002/glia.23710] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 07/18/2019] [Accepted: 08/01/2019] [Indexed: 12/15/2022]
Abstract
Schwann cell (SC)-specific monocarboxylate transporter 1 (MCT1) knockout mice were generated by mating MCT1 f/f mice with myelin protein zero (P0)-Cre mice. P0-Cre+/- , MCT1 f/f mice have no detectable early developmental defects, but develop hypomyelination and reduced conduction velocity in sensory, but not motor, peripheral nerves during maturation and aging. Furthermore, reduced mechanical sensitivity is evident in aged P0-Cre+/- , MCT1 f/f mice. MCT1 deletion in SCs impairs both their glycolytic and mitochondrial functions, leading to altered lipid metabolism of triacylglycerides, diacylglycerides, and sphingomyelin, decreased expression of myelin-associated glycoprotein, and increased expression of c-Jun and p75-neurotrophin receptor, suggesting a regression of SCs to a less mature developmental state. Taken together, our results define the contribution of SC MCT1 to both SC metabolism and peripheral nerve maturation and aging.
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Affiliation(s)
- Mithilesh Kumar Jha
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Youngjin Lee
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland.,Department of Biomedical Sciences, City University of Hong Kong, Hong Kong SAR, Hong Kong
| | - Katelyn A Russell
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Fang Yang
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Raha M Dastgheyb
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Pragney Deme
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Xanthe H Ament
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Weiran Chen
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Ying Liu
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Yun Guan
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland.,Department of Neurological Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Michael J Polydefkis
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Ahmet Hoke
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Norman J Haughey
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Jeffrey D Rothstein
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland.,Brain Science Institute, Johns Hopkins University, Baltimore, Maryland
| | - Brett M Morrison
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland
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Hercher D, Kerbl M, Schuh CMAP, Heinzel J, Gal L, Stainer M, Schmidhammer R, Hausner T, Redl H, Nógrádi A, Hacobian A. Spatiotemporal Differences in Gene Expression Between Motor and Sensory Autografts and Their Effect on Femoral Nerve Regeneration in the Rat. Front Cell Neurosci 2019; 13:182. [PMID: 31139050 PMCID: PMC6519304 DOI: 10.3389/fncel.2019.00182] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Accepted: 04/12/2019] [Indexed: 12/31/2022] Open
Abstract
To improve the outcome after autologous nerve grafting in the clinic, it is important to understand the limiting variables such as distinct phenotypes of motor and sensory Schwann cells. This study investigated the properties of phenotypically different autografts in a 6 mm femoral nerve defect model in the rat, where the respective femoral branches distally of the inguinal bifurcation served as homotopic, or heterotopic autografts. Axonal regeneration and target reinnervation was analyzed by gait analysis, electrophysiology, and wet muscle mass analysis. We evaluated regeneration-associated gene expression between 5 days and 10 weeks after repair, in the autografts as well as the proximal, and distal segments of the femoral nerve using qRT-PCR. Furthermore we investigated expression patterns of phenotypically pure ventral and dorsal roots. We identified highly significant differences in gene expression of a variety of regeneration-associated genes along the central – peripheral axis in healthy femoral nerves. Phenotypically mismatched grafting resulted in altered spatiotemporal expression of neurotrophic factor BDNF, GDNF receptor GFRα1, cell adhesion molecules Cadm3, Cadm4, L1CAM, and proliferation associated Ki67. Although significantly higher quadriceps muscle mass following homotopic nerve grafting was measured, we did not observe differences in gait analysis, and electrophysiological parameters between treatment paradigms. Our study provides evidence for phenotypic commitment of autologous nerve grafts after injury and gives a conclusive overview of temporal expression of several important regeneration-associated genes after repair with sensory or motor graft.
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Affiliation(s)
- David Hercher
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Markus Kerbl
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Christina M A P Schuh
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria.,Centro de Medicina Regenerativa, Facultad de Medicina Clínica Alemana-Universidad del Desarrollo, Santiago, Chile
| | - Johannes Heinzel
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - László Gal
- Department of Anatomy, Histology and Embryology, University of Szeged, Szeged, Hungary
| | - Michaela Stainer
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Robert Schmidhammer
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Thomas Hausner
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Heinz Redl
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Antal Nógrádi
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria.,Department of Anatomy, Histology and Embryology, University of Szeged, Szeged, Hungary
| | - Ara Hacobian
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
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Suelves N, Miguez A, López-Benito S, Barriga GGD, Giralt A, Alvarez-Periel E, Arévalo JC, Alberch J, Ginés S, Brito V. Early Downregulation of p75 NTR by Genetic and Pharmacological Approaches Delays the Onset of Motor Deficits and Striatal Dysfunction in Huntington's Disease Mice. Mol Neurobiol 2019; 56:935-953. [PMID: 29804232 DOI: 10.1007/s12035-018-1126-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Accepted: 05/11/2018] [Indexed: 11/26/2022]
Abstract
Deficits in striatal brain-derived neurotrophic factor (BDNF) delivery and/or BDNF/tropomyosin receptor kinase B (TrkB) signaling may contribute to neurotrophic support reduction and selective early degeneration of striatal medium spiny neurons in Huntington's disease (HD). Furthermore, we and others have demonstrated that TrkB/p75NTR imbalance in vitro increases the vulnerability of striatal neurons to excitotoxic insults and induces corticostriatal synaptic alterations. We have now expanded these studies by analyzing the consequences of BDNF/TrkB/p75NTR imbalance in the onset of motor behavior and striatal neuropathology in HD mice. Our findings demonstrate for the first time that the onset of motor coordination abnormalities, in a full-length knock-in HD mouse model (KI), correlates with the reduction of BDNF and TrkB levels, along with an increase in p75NTR expression. Genetic normalization of p75NTR expression in KI mutant mice delayed the onset of motor deficits and striatal neuropathology, as shown by restored levels of striatal-enriched proteins and dendritic spine density and reduced huntingtin aggregation. We found that the BDNF/TrkB/p75NTR imbalance led to abnormal BDNF signaling, manifested as a diminished activation of TrkB-phospholipase C-gamma pathway but upregulation of c-Jun kinase pathway. Moreover, we confirmed the contribution of the proper balance of BDNF/TrkB/p75NTR on HD pathology by a pharmacological approach using fingolimod. We observed that chronic infusion of fingolimod normalizes p75NTR levels, which is likely to improve motor coordination and striatal neuropathology in HD transgenic mice. We conclude that downregulation of p75NTR expression can delay disease progression suggesting that therapeutic approaches aimed to restore the balance between BDNF, TrkB, and p75NTR could be promising to prevent motor deficits in HD.
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Affiliation(s)
- Nuria Suelves
- Departament de Biomedicina, Facultat de Medicina, Institut de Neurosciències, Universitat de Barcelona, Barcelona, Spain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Andrés Miguez
- Departament de Biomedicina, Facultat de Medicina, Institut de Neurosciències, Universitat de Barcelona, Barcelona, Spain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Saray López-Benito
- Department of Cell Biology and Pathology, Instituto de Neurociencias de Castilla y León (INCyL), University of Salamanca, Salamanca, Spain
- Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
| | - Gerardo García-Díaz Barriga
- Departament de Biomedicina, Facultat de Medicina, Institut de Neurosciències, Universitat de Barcelona, Barcelona, Spain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Albert Giralt
- Departament de Biomedicina, Facultat de Medicina, Institut de Neurosciències, Universitat de Barcelona, Barcelona, Spain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Elena Alvarez-Periel
- Departament de Biomedicina, Facultat de Medicina, Institut de Neurosciències, Universitat de Barcelona, Barcelona, Spain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Juan Carlos Arévalo
- Department of Cell Biology and Pathology, Instituto de Neurociencias de Castilla y León (INCyL), University of Salamanca, Salamanca, Spain
- Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
| | - Jordi Alberch
- Departament de Biomedicina, Facultat de Medicina, Institut de Neurosciències, Universitat de Barcelona, Barcelona, Spain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Silvia Ginés
- Departament de Biomedicina, Facultat de Medicina, Institut de Neurosciències, Universitat de Barcelona, Barcelona, Spain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Verónica Brito
- Departament de Biomedicina, Facultat de Medicina, Institut de Neurosciències, Universitat de Barcelona, Barcelona, Spain.
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain.
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Saba J, Turati J, Ramírez D, Carniglia L, Durand D, Lasaga M, Caruso C. Astrocyte truncated tropomyosin receptor kinase B mediates brain-derived neurotrophic factor anti-apoptotic effect leading to neuroprotection. J Neurochem 2018; 146:686-702. [DOI: 10.1111/jnc.14476] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 05/22/2018] [Accepted: 05/25/2018] [Indexed: 12/19/2022]
Affiliation(s)
- Julieta Saba
- Instituto de Investigaciones Biomédicas (INBIOMED) UBA-CONICET; Paraguay 2155; Facultad de Medicina; Universidad de Buenos Aires; Buenos Aires Argentina
| | - Juan Turati
- Instituto de Investigaciones Biomédicas (INBIOMED) UBA-CONICET; Paraguay 2155; Facultad de Medicina; Universidad de Buenos Aires; Buenos Aires Argentina
| | - Delia Ramírez
- Instituto de Investigaciones Biomédicas (INBIOMED) UBA-CONICET; Paraguay 2155; Facultad de Medicina; Universidad de Buenos Aires; Buenos Aires Argentina
| | - Lila Carniglia
- Instituto de Investigaciones Biomédicas (INBIOMED) UBA-CONICET; Paraguay 2155; Facultad de Medicina; Universidad de Buenos Aires; Buenos Aires Argentina
| | - Daniela Durand
- Instituto de Investigaciones Biomédicas (INBIOMED) UBA-CONICET; Paraguay 2155; Facultad de Medicina; Universidad de Buenos Aires; Buenos Aires Argentina
| | - Mercedes Lasaga
- Instituto de Investigaciones Biomédicas (INBIOMED) UBA-CONICET; Paraguay 2155; Facultad de Medicina; Universidad de Buenos Aires; Buenos Aires Argentina
| | - Carla Caruso
- Instituto de Investigaciones Biomédicas (INBIOMED) UBA-CONICET; Paraguay 2155; Facultad de Medicina; Universidad de Buenos Aires; Buenos Aires Argentina
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22
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Simmons DA. Modulating Neurotrophin Receptor Signaling as a Therapeutic Strategy for Huntington's Disease. J Huntingtons Dis 2018; 6:303-325. [PMID: 29254102 PMCID: PMC5757655 DOI: 10.3233/jhd-170275] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Huntington’s disease (HD) is an autosomal dominant neurodegenerative disorder caused by CAG repeat expansions in the IT15 gene which encodes the huntingtin (HTT) protein. Currently, no treatments capable of preventing or slowing disease progression exist. Disease modifying therapeutics for HD would be expected to target a comprehensive set of degenerative processes given the diverse mechanisms contributing to HD pathogenesis including neuroinflammation, excitotoxicity, and transcription dysregulation. A major contributor to HD-related degeneration is mutant HTT-induced loss of neurotrophic support. Thus, neurotrophin (NT) receptors have emerged as therapeutic targets in HD. The considerable overlap between NT signaling networks and those dysregulated by mutant HTT provides strong theoretical support for this approach. This review will focus on the contributions of disrupted NT signaling in HD-related neurodegeneration and how targeting NT receptors to augment pro-survival signaling and/or to inhibit degenerative signaling may combat HD pathologies. Therapeutic strategies involving NT delivery, peptidomimetics, and the targeting of specific NT receptors (e.g., Trks or p75NTR), particularly with small molecule ligands, are discussed.
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Affiliation(s)
- Danielle A Simmons
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA, USA
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23
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Becker K, Cana A, Baumgärtner W, Spitzbarth I. p75 Neurotrophin Receptor: A Double-Edged Sword in Pathology and Regeneration of the Central Nervous System. Vet Pathol 2018; 55:786-801. [PMID: 29940812 DOI: 10.1177/0300985818781930] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The low-affinity nerve growth factor receptor p75NTR is a major neurotrophin receptor involved in manifold and pleiotropic functions in the developing and adult central nervous system (CNS). Although known for decades, its entire functions are far from being fully elucidated. Depending on the complex interactions with other receptors and on the cellular context, p75NTR is capable of performing contradictory tasks such as mediating cell death as well as cell survival. In parallel, as a prototype marker for certain differentiation stages of Schwann cells and related CNS aldynoglial cells, p75NTR has recently gained increasing notice as a marker for cells with proposed regenerative potential in CNS diseases, such as demyelinating disease and traumatic CNS injury. Besides its pivotal role as a marker for transplantation candidate cells, recent studies in canine neuroinflammatory CNS conditions also highlight a spontaneous endogenous occurrence of p75NTR-positive glia, which potentially play a role in Schwann cell-mediated CNS remyelination. The aim of the present communication is to review the pleiotropic functions of p75NTR in the CNS with a special emphasis on its role as an immunohistochemical marker in neuropathology. Following a brief illustration of the expression of p75NTR in neurogenesis and in developed neuronal populations, the implications of p75NTR expression in astrocytes, oligodendrocytes, and microglia are addressed. A special focus is put on the role of p75NTR as a cell marker for specific differentiation stages of Schwann cells and a regeneration-promoting CNS population, collectively referred to as aldynoglia.
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Affiliation(s)
- Kathrin Becker
- 1 Department of Pathology, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Armend Cana
- 1 Department of Pathology, University of Veterinary Medicine Hannover, Hannover, Germany.,2 Center for Systems Neuroscience, Hannover, Germany
| | - Wolfgang Baumgärtner
- 1 Department of Pathology, University of Veterinary Medicine Hannover, Hannover, Germany.,2 Center for Systems Neuroscience, Hannover, Germany
| | - Ingo Spitzbarth
- 1 Department of Pathology, University of Veterinary Medicine Hannover, Hannover, Germany.,2 Center for Systems Neuroscience, Hannover, Germany
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24
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Ding X, Wu HH, Ji SJ, Cai S, Dai PW, Xu ML, Zhang JJ, Zhang QX, Tian Y, Ma QH. The p75 neurotrophin receptor regulates cranial irradiation-induced hippocampus-dependent cognitive dysfunction. Oncotarget 2018; 8:40544-40557. [PMID: 28380447 PMCID: PMC5522261 DOI: 10.18632/oncotarget.16492] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 02/22/2017] [Indexed: 11/28/2022] Open
Abstract
Cognitive deficits, characterized by progressive problems with hippocampus-dependent learning, memory and spatial processing, are the most serious complication of cranial irradiation. However, the underlying mechanisms remain obscure. The p75 neurotrophin receptor (p75NTR) is involved in a diverse arrays of cellular responses, including neurite outgrowth, neurogenesis, and negative regulation of spine density, which are associated with various neurological disorders. In this study, male Sprague-Dawley (SD) rats received 10 Gy cranial irradiation. Then, we evaluated the expression of p75NTR in the hippocampus after cranial irradiation and explored its potential role in radiation-induced synaptic dysfunction and memory deficits. We found that the expression of p75NTR was significantly increased in the irradiated rat hippocampus. Knockdown of p75NTR by intrahippocampal infusion of AAV8-shp75 ameliorated dendritic spine abnormalities, and restored synapse-related protein levels, thus preventing memory deficits, likely through normalization the phosphor-AKT activity. Moreover, viral-mediated overexpression of p75NTR in the normal hippocampus reproduced learning and memory deficits. Overall, this study demonstrates that p75NTR is an important mediator of irradiation-induced cognitive deficits by regulating dendritic development and synapse structure.
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Affiliation(s)
- Xin Ding
- Department of Radiotherapy & Oncology, The Second Affiliated Hospital of Soochow University, Suzhou, China.,Institute of Radiotherapy & Oncology, Soochow University, Suzhou, China.,Suzhou Key Laboratory for Radiation Oncology, Suzhou, China
| | - Hao-Hao Wu
- Department of Radiotherapy & Oncology, The Second Affiliated Hospital of Soochow University, Suzhou, China.,Institute of Radiotherapy & Oncology, Soochow University, Suzhou, China.,Suzhou Key Laboratory for Radiation Oncology, Suzhou, China
| | - Sheng-Jun Ji
- Department of Radiotherapy & Oncology, The Second Affiliated Hospital of Soochow University, Suzhou, China.,Department of Radiotherapy and Oncology, Nanjing Medical University Affiliated Suzhou Hospital, Suzhou, China
| | - Shang Cai
- Department of Radiotherapy & Oncology, The Second Affiliated Hospital of Soochow University, Suzhou, China.,Institute of Radiotherapy & Oncology, Soochow University, Suzhou, China.,Suzhou Key Laboratory for Radiation Oncology, Suzhou, China
| | - Pei-Wen Dai
- Department of Radiotherapy & Oncology, The Second Affiliated Hospital of Soochow University, Suzhou, China.,Institute of Radiotherapy & Oncology, Soochow University, Suzhou, China.,Suzhou Key Laboratory for Radiation Oncology, Suzhou, China
| | - Mei-Ling Xu
- Department of Radiotherapy & Oncology, The Second Affiliated Hospital of Soochow University, Suzhou, China.,Institute of Radiotherapy & Oncology, Soochow University, Suzhou, China.,Suzhou Key Laboratory for Radiation Oncology, Suzhou, China
| | - Jun-Jun Zhang
- Department of Radiotherapy & Oncology, The Second Affiliated Hospital of Soochow University, Suzhou, China.,Institute of Radiotherapy & Oncology, Soochow University, Suzhou, China.,Suzhou Key Laboratory for Radiation Oncology, Suzhou, China
| | - Qi-Xian Zhang
- Department of Radiotherapy & Oncology, The Second Affiliated Hospital of Soochow University, Suzhou, China.,Institute of Radiotherapy & Oncology, Soochow University, Suzhou, China.,Suzhou Key Laboratory for Radiation Oncology, Suzhou, China
| | - Ye Tian
- Department of Radiotherapy & Oncology, The Second Affiliated Hospital of Soochow University, Suzhou, China.,Institute of Radiotherapy & Oncology, Soochow University, Suzhou, China.,Suzhou Key Laboratory for Radiation Oncology, Suzhou, China
| | - Quan-Hong Ma
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and Institute of Neuroscience, Soochow University, Suzhou, China
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25
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Saadipour K, MacLean M, Pirkle S, Ali S, Lopez-Redondo ML, Stokes DL, Chao MV. The transmembrane domain of the p75 neurotrophin receptor stimulates phosphorylation of the TrkB tyrosine kinase receptor. J Biol Chem 2017; 292:16594-16604. [PMID: 28821608 PMCID: PMC5633122 DOI: 10.1074/jbc.m117.788729] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 07/31/2017] [Indexed: 01/19/2023] Open
Abstract
The function of protein products generated from intramembraneous cleavage by the γ-secretase complex is not well defined. The γ-secretase complex is responsible for the cleavage of several transmembrane proteins, most notably the amyloid precursor protein that results in Aβ, a transmembrane (TM) peptide. Another protein that undergoes very similar γ-secretase cleavage is the p75 neurotrophin receptor. However, the fate of the cleaved p75 TM domain is unknown. p75 neurotrophin receptor is highly expressed during early neuronal development and regulates survival and process formation of neurons. Here, we report that the p75 TM can stimulate the phosphorylation of TrkB (tyrosine kinase receptor B). In vitro phosphorylation experiments indicated that a peptide representing p75 TM increases TrkB phosphorylation in a dose- and time-dependent manner. Moreover, mutagenesis analyses revealed that a valine residue at position 264 in the rat p75 neurotrophin receptor is necessary for the ability of p75 TM to induce TrkB phosphorylation. Because this residue is just before the γ-secretase cleavage site, we then investigated whether the p75(αγ) peptide, which is a product of both α- and γ-cleavage events, could also induce TrkB phosphorylation. Experiments using TM domains from other receptors, EGFR and FGFR1, failed to stimulate TrkB phosphorylation. Co-immunoprecipitation and biochemical fractionation data suggested that p75 TM stimulates TrkB phosphorylation at the cell membrane. Altogether, our results suggest that TrkB activation by p75(αγ) peptide may be enhanced in situations where the levels of the p75 receptor are increased, such as during brain injury, Alzheimer's disease, and epilepsy.
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Affiliation(s)
- Khalil Saadipour
- From the Departments of Cell Biology, Physiology & Neuroscience, and Psychiatry, Skirball Institute of Biomolecular Medicine, New York University Langone Medical Center, New York, New York 10016
| | - Michael MacLean
- From the Departments of Cell Biology, Physiology & Neuroscience, and Psychiatry, Skirball Institute of Biomolecular Medicine, New York University Langone Medical Center, New York, New York 10016
| | - Sean Pirkle
- From the Departments of Cell Biology, Physiology & Neuroscience, and Psychiatry, Skirball Institute of Biomolecular Medicine, New York University Langone Medical Center, New York, New York 10016
| | - Solav Ali
- From the Departments of Cell Biology, Physiology & Neuroscience, and Psychiatry, Skirball Institute of Biomolecular Medicine, New York University Langone Medical Center, New York, New York 10016
| | - Maria-Luisa Lopez-Redondo
- From the Departments of Cell Biology, Physiology & Neuroscience, and Psychiatry, Skirball Institute of Biomolecular Medicine, New York University Langone Medical Center, New York, New York 10016
| | - David L Stokes
- From the Departments of Cell Biology, Physiology & Neuroscience, and Psychiatry, Skirball Institute of Biomolecular Medicine, New York University Langone Medical Center, New York, New York 10016
| | - Moses V Chao
- From the Departments of Cell Biology, Physiology & Neuroscience, and Psychiatry, Skirball Institute of Biomolecular Medicine, New York University Langone Medical Center, New York, New York 10016
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26
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Śmieszek A, Stręk Z, Kornicka K, Grzesiak J, Weiss C, Marycz K. Antioxidant and Anti-Senescence Effect of Metformin on Mouse Olfactory Ensheathing Cells (mOECs) May Be Associated with Increased Brain-Derived Neurotrophic Factor Levels-An Ex Vivo Study. Int J Mol Sci 2017; 18:ijms18040872. [PMID: 28425952 PMCID: PMC5412453 DOI: 10.3390/ijms18040872] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 04/11/2017] [Accepted: 04/13/2017] [Indexed: 12/22/2022] Open
Abstract
Metformin, the popular anti-diabetic drug was shown to exert multiple biological effects. The most recent metformin gained attention as an agent that mobilizes endogenous progenitor cells and enhances regenerative potential of organisms, for example by promoting neurogenesis. In the present study, we examined the role of metformin on mouse olfactory ensheathing cells (mOECs) derived from animals receiving metformin for eight weeks at a concentration equal to 2.8 mg/day. The mOECs expanded ex vivo were characterized in terms of their cellular phenotype, morphology, proliferative activity, viability and accumulation of oxidative stress factors. Moreover, we determined the mRNA and protein levels of brain-derived neurotrophic factor (BDNF), distinguishing the secretion of BDNF by mOECs in cultures and circulating serum levels of BDNF. The mOECs used in the experiment were glial fibrillary acidic protein (GFAP) and p75 neurotrophin receptor (p75NTR) positive and exhibited both astrocyte-like and non-myelin Schwann cell-like morphologies. Our results revealed that the proliferation of OECs derived from mice treated with metformin was lowered, when compared to control group. Simultaneously, we noted increased cell viability, reduced expression of markers associated with cellular senescence and a decreased amount of reactive oxygen species. We observed increased mRNA expression of BDNF and its down-stream genes. Obtained results indicate that metformin may exert antioxidant, anti-apoptotic and senolytic action on OECs expanded ex vivo.
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Affiliation(s)
- Agnieszka Śmieszek
- Department of Experimental Biology and Electron Microscope Facility, The Faculty of Biology and Animal Science, Wroclaw University of Environmental and Life Sciences, Norwida 25, 50-375 Wroclaw, Poland.
| | - Zuzanna Stręk
- Department of Experimental Biology and Electron Microscope Facility, The Faculty of Biology and Animal Science, Wroclaw University of Environmental and Life Sciences, Norwida 25, 50-375 Wroclaw, Poland.
| | - Katarzyna Kornicka
- Department of Experimental Biology and Electron Microscope Facility, The Faculty of Biology and Animal Science, Wroclaw University of Environmental and Life Sciences, Norwida 25, 50-375 Wroclaw, Poland.
| | - Jakub Grzesiak
- Wroclaw Research Centre EIT+, Stablowicka 147, 54-066 Wroclaw, Poland.
| | - Christine Weiss
- PferdePraxis Dr. Med. Vet. Daniel Weiss, Postmatte 14, CH-8807 Freienbach, Switzerland.
| | - Krzysztof Marycz
- Wroclaw Research Centre EIT+, Stablowicka 147, 54-066 Wroclaw, Poland.
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27
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Rosso P, De Nicolò S, Carito V, Fiore M, Iannitelli A, Moreno S, Tirassa P. Ocular Nerve Growth Factor Administration Modulates Brain-derived Neurotrophic Factor Signaling in Prefrontal Cortex of Healthy and Diabetic Rats. CNS Neurosci Ther 2017; 23:198-208. [PMID: 28044424 DOI: 10.1111/cns.12661] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 11/03/2016] [Accepted: 11/04/2016] [Indexed: 01/24/2023] Open
Abstract
AIMS Nerve growth factor (NGF) eyedrops (ed-NGF) activate brain neurons, stimulate growth factors, including brain-derived neurotrophic factor (BDNF), and exert neuroprotection in the forebrain of streptozotocin-induced diabetic rats (STZ rats). In this study, the effects of ed-NGF on BDNF signaling in the prefrontal cortex (PFC) were explored in healthy and STZ-diabetic rats, in which cortical neuronal and axonal loss, and altered circulating BDNF associated with depressive phenotype are also described. METHODS STZ and healthy (CTR) adult rats received ed-NGF twice a day for 2 weeks. Depressive phenotype was identified by force swimming test (FST). Proteins extracted from PFC were processed for ELISA and Western blot analyses to measure the expression of BDNF, proBDNF, and their receptors and intracellular signals. RESULTS ed-NGF treatment modulates BDNF pathway in PFC and normalizes the STZ-induced BDNF alterations by stimulating TRK-mediated survival mechanism. A decreased latency in FST was also found in STZ rats, while no change was observed comparing CTR + NGF and STZ + NGF with CTR. CONCLUSION The present data confirm the capacity of ed-NGF treatment to affect brain neurons and lead to brain damage recovery by activating protective and remodeling pathways triggered by BDNF. We suggest that the ed-NGF-induced changes in BDNF signaling might influence the manifestation of depressive phenotype in diabetic rats.
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Affiliation(s)
- Pamela Rosso
- National Research Council (CNR), Institute of Cell Biology & Neurobiology, Rome, Italy.,Department of Science, LIME, University Roma Tre, Rome, Italy
| | - Sara De Nicolò
- National Research Council (CNR), Institute of Cell Biology & Neurobiology, Rome, Italy
| | - Valentina Carito
- National Research Council (CNR), Institute of Cell Biology & Neurobiology, Rome, Italy
| | - Marco Fiore
- National Research Council (CNR), Institute of Cell Biology & Neurobiology, Rome, Italy
| | - Angela Iannitelli
- Department of Medical-Surgical Sciences and Biotechnologies, Faculty of Pharmacy and Medicine, "Sapienza" University of Rome, Rome, Italy
| | - Sandra Moreno
- Department of Science, LIME, University Roma Tre, Rome, Italy
| | - Paola Tirassa
- National Research Council (CNR), Institute of Cell Biology & Neurobiology, Rome, Italy
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28
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Kwakowsky A, Milne MR, Waldvogel HJ, Faull RL. Effect of Estradiol on Neurotrophin Receptors in Basal Forebrain Cholinergic Neurons: Relevance for Alzheimer's Disease. Int J Mol Sci 2016; 17:E2122. [PMID: 27999310 PMCID: PMC5187922 DOI: 10.3390/ijms17122122] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 12/05/2016] [Accepted: 12/12/2016] [Indexed: 02/06/2023] Open
Abstract
The basal forebrain is home to the largest population of cholinergic neurons in the brain. These neurons are involved in a number of cognitive functions including attention, learning and memory. Basal forebrain cholinergic neurons (BFCNs) are particularly vulnerable in a number of neurological diseases with the most notable being Alzheimer's disease, with evidence for a link between decreasing cholinergic markers and the degree of cognitive impairment. The neurotrophin growth factor system is present on these BFCNs and has been shown to promote survival and differentiation on these neurons. Clinical and animal model studies have demonstrated the neuroprotective effects of 17β-estradiol (E2) on neurodegeneration in BFCNs. It is believed that E2 interacts with neurotrophin signaling on cholinergic neurons to mediate these beneficial effects. Evidence presented in our recent study confirms that altering the levels of circulating E2 levels via ovariectomy and E2 replacement significantly affects the expression of the neurotrophin receptors on BFCN. However, we also showed that E2 differentially regulates neurotrophin receptor expression on BFCNs with effects depending on neurotrophin receptor type and neuroanatomical location. In this review, we aim to survey the current literature to understand the influence of E2 on the neurotrophin system, and the receptors and signaling pathways it mediates on BFCN. In addition, we summarize the physiological and pathophysiological significance of E2 actions on the neurotrophin system in BFCN, especially focusing on changes related to Alzheimer's disease.
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Affiliation(s)
- Andrea Kwakowsky
- Centre for Brain Research, Department of Anatomy and Medical Imaging, Faculty of Medical and Health Sciences, University of Auckland, Auckland 1142, New Zealand.
| | - Michael R Milne
- School of Biomedical Sciences, Queensland Brain Institute, Clem Jones Centre for Ageing Dementia Research, The University of Queensland, Brisbane 4072, QLD, Australia.
| | - Henry J Waldvogel
- Centre for Brain Research, Department of Anatomy and Medical Imaging, Faculty of Medical and Health Sciences, University of Auckland, Auckland 1142, New Zealand.
| | - Richard L Faull
- Centre for Brain Research, Department of Anatomy and Medical Imaging, Faculty of Medical and Health Sciences, University of Auckland, Auckland 1142, New Zealand.
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29
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The Neurotrophic Factor Receptor p75 in the Rat Dorsolateral Striatum Drives Excessive Alcohol Drinking. J Neurosci 2016; 36:10116-27. [PMID: 27683907 DOI: 10.1523/jneurosci.4597-14.2016] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Accepted: 08/10/2016] [Indexed: 01/06/2023] Open
Abstract
UNLABELLED Brain-derived neurotrophic factor (BDNF) signaling in the dorsolateral striatum (DLS) keeps alcohol intake in moderation. For example, activation of the BDNF receptor tropomyosin receptor kinase B (TrkB) in the DLS reduces intake in rats that consume moderate amounts of alcohol. Here, we tested whether long-term excessive consumption of alcohol produces neuroadaptations in BDNF signaling in the rat DLS. We found that BDNF was no longer able to gate alcohol self-administration after a history of repeated cycles of binge alcohol drinking and withdrawal. We then elucidated the possible neuroadaptations that could block the ability of BDNF to keep consumption of alcohol in moderation. We report that intermittent access to 20% alcohol in a two-bottle choice paradigm that models excessive alcohol drinking produces a mobilization of DLS p75 neurotrophin receptor (p75NTR), whose activities oppose those of the Trk receptors, including TrkB. These neuroadaptations were not observed in the DLS of rats exposed to continuous access to 10% alcohol or in rats consuming sucrose. Furthermore, short hairpin RNA (shRNA)-mediated knockdown of the p75NTR gene in the DLS, as well as intra-DLS infusion or systemic administration of the p75NTR modulator, LM11A-31, significantly reduced binge drinking of alcohol. Together, our results suggest that excessive alcohol consumption produces a change in BDNF signaling in the DLS, which is mediated by the recruitment of p75NTR. Our data also imply that modulators of p75NTR signaling could be developed as medications for alcohol abuse disorders. SIGNIFICANCE STATEMENT Neuroadaptations gate or drive excessive, compulsive alcohol drinking. We previously showed that brain-derived neurotrophic factor and its receptor, TrkB, in the dorsolateral striatum (DLS), are part of an endogenous system that keeps alcohol drinking in moderation. Here, we show that a history of excessive alcohol intake produces neuroadaptations in the DLS that preclude BDNF's ability to gate alcohol self-administration in rats by the recruitment of the low-affinity neurotrophin receptor, p75NTR, whose activities opposes those of the Trk receptors. Finally, we show that the administration of the p75NTR modulator, LM11A-31, significantly reduces excessive alcohol intake suggesting that the drug may be developed as a new treatment for alcohol abuse disorders.
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Reactive Transformation and Increased BDNF Signaling by Hippocampal Astrocytes in Response to MK-801. PLoS One 2015; 10:e0145651. [PMID: 26700309 PMCID: PMC4689377 DOI: 10.1371/journal.pone.0145651] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 12/07/2015] [Indexed: 11/26/2022] Open
Abstract
MK-801, also known as dizocilpine, is a noncompetitive N-methyl-D-aspartic acid (NMDA) receptor antagonist that induces schizophrenia-like symptoms. While astrocytes have been implicated in the pathophysiology of psychiatric disorders, including schizophrenia, astrocytic responses to MK-801 and their significance to schizotypic symptoms are unclear. Changes in the expression levels of glial fibrillary acid protein (GFAP), a marker of astrocyte activation in response to a variety of pathogenic stimuli, were examined in the hippocampus of rats treated with the repeated MK-801 injection (0.5 mg/10ml/kg body weight for 6 days) and in primary cultured hippocampal astrocytes incubated with MK-801 (5 or 20 μM for 24 h). Moreover, the expression levels of BDNF and its receptors TrkB and p75 were examined in MK-801-treated astrocyte cultures. MK-801 treatment enhanced GFAP expression in the rat hippocampus and also increased the levels of GFAP protein and mRNA in hippocampal astrocytes in vitro. Treatment of cultured hippocampal astrocytes with MK-801 enhanced protein and mRNA levels of BDNF, TrkB, and p75. Collectively, our results suggest that hippocampal astrocytes may contribute to the pathophysiology of schizophrenia symptoms associated with NMDA receptor hypofunction by reactive transformation and altered BDNF signaling.
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31
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Alder J, Fujioka W, Giarratana A, Wissocki J, Thakkar K, Vuong P, Patel B, Chakraborty T, Elsabeh R, Parikh A, Girn HS, Crockett D, Thakker-Varia S. Genetic and pharmacological intervention of the p75NTR pathway alters morphological and behavioural recovery following traumatic brain injury in mice. Brain Inj 2015; 30:48-65. [PMID: 26579945 DOI: 10.3109/02699052.2015.1088963] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
PRIMARY OBJECTIVE Neurotrophin levels are elevated after TBI, yet there is minimal regeneration. It was hypothesized that the pro-neurotrophin/p75NTR pathway is induced more than the mature neurotrophin/Trk pathway and that interfering with p75 signalling improves recovery following TBI. RESEARCH DESIGN Lateral Fluid Percussion (LFP) injury was performed on wildtype and p75 mutant mice. In addition, TrkB agonist 7,8 Dihydroxyflavone or p75 antagonist TAT-Pep5 were tested. Western blot and immunohistochemistry revealed biochemical and cellular changes. Morris Water Maze and Rotarod tests demonstrated cognitive and vestibulomotor function. MAIN OUTCOMES AND RESULTS p75 was up-regulated and TrkB was down-regulated 1 day post-LFP. p75 mutant mice as well as mice treated with the p75 antagonist or the TrkB agonist exhibited reduced neuronal death and degeneration and less astrocytosis. The cells undergoing apoptosis appear to be neurons rather than glia. There was improved motor function and spatial learning in p75 mutant mice and mice treated with the p75 antagonist. CONCLUSIONS Many of the pathological and behavioural consequences of TBI might be due to activation of the pro-neurotrophin/p75 toxic pathway overriding the protective mechanisms of the mature neurotrophin/Trk pathway. Targeting p75 can be a novel strategy to counteract the damaging effects of TBI.
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MESH Headings
- Animals
- Apoptosis/physiology
- Astrocytes/metabolism
- Astrocytes/pathology
- Brain Injuries, Traumatic/drug therapy
- Brain Injuries, Traumatic/genetics
- Brain Injuries, Traumatic/metabolism
- Brain-Derived Neurotrophic Factor/metabolism
- Cognition/physiology
- Flavones/pharmacology
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Mutant Strains
- Nerve Growth Factors/metabolism
- Receptor, trkB/agonists
- Receptor, trkB/genetics
- Receptor, trkB/metabolism
- Receptors, Nerve Growth Factor/antagonists & inhibitors
- Receptors, Nerve Growth Factor/genetics
- Receptors, Nerve Growth Factor/metabolism
- Sensory Receptor Cells/metabolism
- Sensory Receptor Cells/pathology
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Affiliation(s)
- Janet Alder
- a Rutgers Robert Wood Johnson Medical School , Piscataway , NJ , USA
| | - Wendy Fujioka
- a Rutgers Robert Wood Johnson Medical School , Piscataway , NJ , USA
| | - Anna Giarratana
- a Rutgers Robert Wood Johnson Medical School , Piscataway , NJ , USA
| | - Jenna Wissocki
- a Rutgers Robert Wood Johnson Medical School , Piscataway , NJ , USA
| | - Keya Thakkar
- a Rutgers Robert Wood Johnson Medical School , Piscataway , NJ , USA
| | - Phung Vuong
- a Rutgers Robert Wood Johnson Medical School , Piscataway , NJ , USA
| | - Bijal Patel
- a Rutgers Robert Wood Johnson Medical School , Piscataway , NJ , USA
| | | | - Rami Elsabeh
- a Rutgers Robert Wood Johnson Medical School , Piscataway , NJ , USA
| | - Ankit Parikh
- a Rutgers Robert Wood Johnson Medical School , Piscataway , NJ , USA
| | - Hartaj S Girn
- a Rutgers Robert Wood Johnson Medical School , Piscataway , NJ , USA
| | - David Crockett
- a Rutgers Robert Wood Johnson Medical School , Piscataway , NJ , USA
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Calabrese G, Giuffrida R, Lo Furno D, Parrinello NL, Forte S, Gulino R, Colarossi C, Schinocca LR, Giuffrida R, Cardile V, Memeo L. Potential Effect of CD271 on Human Mesenchymal Stromal Cell Proliferation and Differentiation. Int J Mol Sci 2015; 16:15609-24. [PMID: 26184166 PMCID: PMC4519916 DOI: 10.3390/ijms160715609] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Revised: 06/24/2015] [Accepted: 07/04/2015] [Indexed: 01/01/2023] Open
Abstract
The Low-Affinity Nerve Growth Factor Receptor (LNGFR), also known as CD271, is a member of the tumor necrosis factor receptor superfamily. The CD271 cell surface marker defines a subset of multipotential mesenchymal stromal cells and may be used to isolate and enrich cells derived from bone marrow aspirate. In this study, we compare the proliferative and differentiation potentials of CD271+ and CD271- mesenchymal stromal cells. Mesenchymal stromal cells were isolated from bone marrow aspirate and adipose tissue by plastic adherence and positive selection. The proliferation and differentiation potentials of CD271+ and CD271- mesenchymal stromal cells were assessed by inducing osteogenic, adipogenic and chondrogenic in vitro differentiation. Compared to CD271+, CD271- mesenchymal stromal cells showed a lower proliferation rate and a decreased ability to give rise to osteocytes, adipocytes and chondrocytes. Furthermore, we observed that CD271+ mesenchymal stromal cells isolated from adipose tissue displayed a higher efficiency of proliferation and trilineage differentiation compared to CD271+ mesenchymal stromal cells isolated from bone marrow samples, although the CD271 expression levels were comparable. In conclusion, these data show that both the presence of CD271 antigen and the source of mesenchymal stromal cells represent important factors in determining the ability of the cells to proliferate and differentiate.
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Affiliation(s)
| | | | - Debora Lo Furno
- Department of Biomedical and Biotechnological Sciences, Physiology Section, University of Catania, 95125 Catania, Italy.
| | - Nunziatina Laura Parrinello
- Department of Experimental Oncology, Mediterranean Institute of Oncology, 95029 Viagrande, Italy.
- Department of Biomedical Sciences, Hematology Section, University of Catania, 95124 Catania, Italy.
| | | | - Rosario Gulino
- IOM Ricerca, 95029 Viagrande, Italy.
- Department of Biomedical and Biotechnological Sciences, Physiology Section, University of Catania, 95125 Catania, Italy.
| | - Cristina Colarossi
- Department of Experimental Oncology, Mediterranean Institute of Oncology, 95029 Viagrande, Italy.
| | - Luciana Rita Schinocca
- Department of Experimental Oncology, Mediterranean Institute of Oncology, 95029 Viagrande, Italy.
| | - Rosario Giuffrida
- Department of Biomedical and Biotechnological Sciences, Physiology Section, University of Catania, 95125 Catania, Italy.
| | - Venera Cardile
- Department of Biomedical and Biotechnological Sciences, Physiology Section, University of Catania, 95125 Catania, Italy.
| | - Lorenzo Memeo
- IOM Ricerca, 95029 Viagrande, Italy.
- Department of Experimental Oncology, Mediterranean Institute of Oncology, 95029 Viagrande, Italy.
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33
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Ahn BY, Saldanha-Gama RFG, Rahn JJ, Hao X, Zhang J, Dang NH, Alshehri M, Robbins SM, Senger DL. Glioma invasion mediated by the p75 neurotrophin receptor (p75(NTR)/CD271) requires regulated interaction with PDLIM1. Oncogene 2015; 35:1411-22. [PMID: 26119933 PMCID: PMC4800290 DOI: 10.1038/onc.2015.199] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Revised: 04/23/2015] [Accepted: 05/10/2015] [Indexed: 01/05/2023]
Abstract
The invasive nature of glioblastoma renders them incurable by current therapeutic interventions. Using a novel invasive human glioma model, we previously identified the neurotrophin receptor p75NTR (aka CD271) as a mediator of glioma invasion. Herein, we provide evidence that preventing phosphorylation of p75NTR on S303 by pharmacological inhibition of PKA, or by a mutational strategy (S303G), cripples p75NTR-mediated glioma invasion resulting in serine phosphorylation within the C-terminal PDZ-binding motif (SPV) of p75NTR. Consistent with this, deletion (ΔSPV) or mutation (SPM) of the PDZ motif results in abrogation of p75NTR-mediated invasion. Using a peptide-based strategy, we identified PDLIM1 as a novel signaling adaptor for p75NTR and provide the first evidence for a regulated interaction via S425 phosphorylation. Importantly, PDLIM1 was shown to interact with p75NTR in highly invasive patient-derived glioma stem cells/tumor-initiating cells and shRNA knockdown of PDLIM1 in vitro and in vivo results in complete ablation of p75NTR-mediated invasion. Collectively, these data demonstrate a requirement for a regulated interaction of p75NTR with PDLIM1 and suggest that targeting either the PDZ domain interactions and/or the phosphorylation of p75NTR by PKA could provide therapeutic strategies for patients with glioblastoma.
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Affiliation(s)
- B Y Ahn
- Southern Alberta Cancer Research Institute, University of Calgary, Calgary, Alberta, Canada.,Hughes Childhood Cancer Program, University of Calgary, Calgary, Alberta, Canada.,Department of Oncology, University of Calgary, Calgary, Alberta, Canada
| | - R F G Saldanha-Gama
- Southern Alberta Cancer Research Institute, University of Calgary, Calgary, Alberta, Canada.,Department of Oncology, University of Calgary, Calgary, Alberta, Canada.,Clark H. Smith Brain Tumour Centre, University of Calgary, Calgary, Alberta, Canada
| | - J J Rahn
- Southern Alberta Cancer Research Institute, University of Calgary, Calgary, Alberta, Canada.,Hughes Childhood Cancer Program, University of Calgary, Calgary, Alberta, Canada.,Department of Oncology, University of Calgary, Calgary, Alberta, Canada
| | - X Hao
- Southern Alberta Cancer Research Institute, University of Calgary, Calgary, Alberta, Canada.,Hughes Childhood Cancer Program, University of Calgary, Calgary, Alberta, Canada.,Department of Oncology, University of Calgary, Calgary, Alberta, Canada
| | - J Zhang
- Southern Alberta Cancer Research Institute, University of Calgary, Calgary, Alberta, Canada.,Clark H. Smith Brain Tumour Centre, University of Calgary, Calgary, Alberta, Canada
| | - N-H Dang
- Southern Alberta Cancer Research Institute, University of Calgary, Calgary, Alberta, Canada.,Department of Oncology, University of Calgary, Calgary, Alberta, Canada.,Clark H. Smith Brain Tumour Centre, University of Calgary, Calgary, Alberta, Canada
| | - M Alshehri
- Southern Alberta Cancer Research Institute, University of Calgary, Calgary, Alberta, Canada.,Department of Oncology, University of Calgary, Calgary, Alberta, Canada.,Clark H. Smith Brain Tumour Centre, University of Calgary, Calgary, Alberta, Canada
| | - S M Robbins
- Southern Alberta Cancer Research Institute, University of Calgary, Calgary, Alberta, Canada.,Hughes Childhood Cancer Program, University of Calgary, Calgary, Alberta, Canada.,Department of Oncology, University of Calgary, Calgary, Alberta, Canada.,Clark H. Smith Brain Tumour Centre, University of Calgary, Calgary, Alberta, Canada
| | - D L Senger
- Southern Alberta Cancer Research Institute, University of Calgary, Calgary, Alberta, Canada.,Hughes Childhood Cancer Program, University of Calgary, Calgary, Alberta, Canada.,Department of Oncology, University of Calgary, Calgary, Alberta, Canada.,Clark H. Smith Brain Tumour Centre, University of Calgary, Calgary, Alberta, Canada
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34
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Murillo-Sauca O, Chung MK, Shin JH, Karamboulas C, Kwok S, Jung YH, Oakley R, Tysome JR, Farnebo LO, Kaplan MJ, Sirjani D, Divi V, Holsinger FC, Tomeh C, Nichols A, Le QT, Colevas AD, Kong CS, Uppaluri R, Lewis JS, Ailles LE, Sunwoo JB. CD271 is a functional and targetable marker of tumor-initiating cells in head and neck squamous cell carcinoma. Oncotarget 2015; 5:6854-66. [PMID: 25149537 PMCID: PMC4196168 DOI: 10.18632/oncotarget.2269] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Tumor-initiating cells (TICs) in squamous cell carcinoma of the head and neck (SCCHN) are best characterized by their surface expression of CD44. Although there is great interest in identifying strategies to target this population, no marker of these cells has been found to be functionally active. Here, we examined the expression of the purported marker of normal human oral epithelial stem cells, CD271. We show that CD271 expression is restricted to a subset of the CD44+ cells. Using xenograft assays, we show that the CD44+CD271+ subpopulation contains the most tumorigenic cells. Loss of CD271 function results in a block in the G2-M phase of the cell cycle and a profound negative impact on the capacity of these cells to initiate tumor formation in vivo. Incubation with recombinant NGF results in enhanced phosphorylation of Erk, providing additional evidence that CD271 is functionally active. Finally, incubation of SCCHN cells with antibody to CD271 results in decreased Erk phosphorylation and decreased tumor formation in vivo. Thus, our data are the first to demonstrate that CD271 more specifically identifies the TIC subpopulation within the CD44+ compartment in SCCHN and that this receptor is a functionally active and targetable molecule.
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Affiliation(s)
- Oihana Murillo-Sauca
- Division of Head and Neck Surgery, Department of Otolaryngology, Stanford University School of Medicine, Stanford, CA. Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA. Stanford Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA.
| | - Man Ki Chung
- Division of Head and Neck Surgery, Department of Otolaryngology, Stanford University School of Medicine, Stanford, CA. Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA. Stanford Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA
| | - June Ho Shin
- Division of Head and Neck Surgery, Department of Otolaryngology, Stanford University School of Medicine, Stanford, CA. Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA. Stanford Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA.
| | | | - Shirley Kwok
- Department of Pathology, Stanford University School of Medicine, Stanford, CA
| | - Young Ho Jung
- Division of Head and Neck Surgery, Department of Otolaryngology, Stanford University School of Medicine, Stanford, CA. Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA. Stanford Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA
| | - Richard Oakley
- Division of Head and Neck Surgery, Department of Otolaryngology, Stanford University School of Medicine, Stanford, CA. Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA
| | - James R Tysome
- Division of Head and Neck Surgery, Department of Otolaryngology, Stanford University School of Medicine, Stanford, CA. Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA
| | - Lovisa O Farnebo
- Division of Head and Neck Surgery, Department of Otolaryngology, Stanford University School of Medicine, Stanford, CA. Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA. Stanford Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA
| | - Michael J Kaplan
- Division of Head and Neck Surgery, Department of Otolaryngology, Stanford University School of Medicine, Stanford, CA. Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA
| | - Davud Sirjani
- Division of Head and Neck Surgery, Department of Otolaryngology, Stanford University School of Medicine, Stanford, CA. Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA
| | - Vasu Divi
- Division of Head and Neck Surgery, Department of Otolaryngology, Stanford University School of Medicine, Stanford, CA. Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA.
| | - F Christopher Holsinger
- Division of Head and Neck Surgery, Department of Otolaryngology, Stanford University School of Medicine, Stanford, CA. Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA.
| | - Chafeek Tomeh
- Division of Head and Neck Surgery, Department of Otolaryngology, Stanford University School of Medicine, Stanford, CA. Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA
| | - Anthony Nichols
- Department of Otolaryngology - Head and Neck Surgery, Victoria Hospital, Schulich School of Medicine and Dentistry, London, Ontario, Canada
| | - Quynh T Le
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA. Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA.
| | - A Dimitrios Colevas
- Department of Medicine, Stanford University School of Medicine, Stanford, CA. Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA
| | - Christina S Kong
- Department of Pathology, Stanford University School of Medicine, Stanford, CA. Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA
| | - Ravindra Uppaluri
- Department of Otolaryngology - Head and Neck Surgery, Washington University School of Medicine, St. Louis, MO
| | - James S Lewis
- Department of Otolaryngology - Head and Neck Surgery, Washington University School of Medicine, St. Louis, MO. Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO.
| | - Laurie E Ailles
- Ontario Cancer Institute, University Health Network, Toronto, Canada
| | - John B Sunwoo
- Division of Head and Neck Surgery, Department of Otolaryngology, Stanford University School of Medicine, Stanford, CA. Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA. Stanford Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA
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35
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Lazzari M, Bettini S, Franceschini V. Immunocytochemical characterisation of ensheathing glia in the olfactory and vomeronasal systems of Ambystoma mexicanum (Caudata: Ambystomatidae). Brain Struct Funct 2014; 221:955-67. [PMID: 25433448 DOI: 10.1007/s00429-014-0949-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Accepted: 11/22/2014] [Indexed: 01/18/2023]
Abstract
The olfactory and vomeronasal systems of vertebrates are characterised by neurogenesis occurring throughout life. The regenerative ability of olfactory receptor neurons relies on specific glial cells, the olfactory and vomeronasal axon-surrounding cells. Numerous studies have examined mammalian olfactory ensheathing cells which are considered potential candidates for spinal cord injury repair using cell-based therapy. With regard to non-mammalian vertebrates, limited information is available on these glial cells in fish, and there is no information on them in terrestrial anamniotes, the amphibians. In the present research, we studied the immunocytochemical characteristics of axon-surrounding cells in Ambystoma mexicanum. Urodeles have relatively simple olfactory and vomeronasal systems, and represent a good model for studying ensheathing cells in extant representatives of basal tetrapods. Sections from the decalcified heads of A. mexicanum were immunocytochemically processed for the detection of proteins used in research on mammalian olfactory-ensheathing cells. S100, GFAP and NCAM were clearly observed. p75NTR, Gal-1 and PSA-NCAM showed weak staining. No vimentin immunopositivity was observed. The corresponding areas of the olfactory and vomeronasal pathways displayed the same staining characteristics, with the exception of Gal-1, p75NTR and PSA-NCAM in the mucosae. The degree of marker expression was not uniform throughout the sensory pathways. In contrast to fish, both olfactory and vomeronasal nerves displayed uniform staining intensity. This study showed that some markers for mammalian and fish-ensheathing glia are also applicable in urodeles. The olfactory systems of vertebrates show similarities, and also clear dissimilarities. Further investigations are required to ascertain the functional significance of these regional and interspecific differences.
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Affiliation(s)
- Maurizio Lazzari
- Department of Biological Geological and Environmental Sciences, University of Bologna, Via F. Selmi 3, 40126, Bologna, Italy.
| | - Simone Bettini
- Department of Biological Geological and Environmental Sciences, University of Bologna, Via F. Selmi 3, 40126, Bologna, Italy
| | - Valeria Franceschini
- Department of Biological Geological and Environmental Sciences, University of Bologna, Via F. Selmi 3, 40126, Bologna, Italy
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36
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Spitzbarth I, Cana A, Hahn K, Hansmann F, Baumgärtner W. Associated occurrence of p75 neurotrophin receptor expressing aldynoglia and microglia/macrophages in long term organotypic murine brain slice cultures. Brain Res 2014; 1595:29-42. [PMID: 25446435 DOI: 10.1016/j.brainres.2014.11.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Revised: 11/03/2014] [Accepted: 11/07/2014] [Indexed: 11/17/2022]
Abstract
Growth-promoting aldynoglia, characterized by the expression of the prototype immature Schwann cell marker p75 neurotrophin receptor (NTR) have been shown to occur in some demyelinating diseases. However, the mechanisms determining the emergence and fate of such cells are largely unknown. This study aimed at the identification of such cells and potential triggering factors using an in vitro slice culture approach. Organotypic cerebrum and brain stem slices of adult mice were cultivated for up to 18 days in vitro. Immunohistochemistry for the detection of p75(NTR), CD107b, periaxin, growth associated protein (GAP)-43, and glial fibrillary acidic protein (GFAP) was performed. The results for p75(NTR) were substantiated by the use of in situ hybridization. Cultivation was associated with a progressively increasing spontaneous occurrence of bi- to multipolar p75(NTR)-positive, but periaxin-negative glia, indicative of aldynoglial Schwann cell like cells. Similar cells stained intensely positive for GAP-43, a marker for non-myelinating Schwann cells. The number of p75(NTR) positive glia did not correlate with GFAP expression, but showed a strong correlation with a remarkable spontaneous response of CD107b positive phagocytic microglia/macrophages. Moreover, aldynoglial p75(NTR) immunoreactivity negatively correlated to neuronal p75(NTR) expression, which was lost during culturing. The present results demonstrate that the cultivation of organotypic murine brain slices is accompanied by a spontaneous response of both microglia/macrophages and p75(NTR) positive cells, suggestive of Schwann cell like aldynoglia. The findings highlights the role of microglia/macrophages, which seem to be an important triggering factor, facilitating the occurrence of this unique type of macroglia.
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Affiliation(s)
- I Spitzbarth
- Department of Pathology, University of Veterinary Medicine, Buenteweg 17, D-30559 Hannover, Germany; Center for Systems Neuroscience, Hannover, Germany.
| | - A Cana
- Department of Pathology, University of Veterinary Medicine, Buenteweg 17, D-30559 Hannover, Germany; Center for Systems Neuroscience, Hannover, Germany
| | - K Hahn
- Department of Pathology, University of Veterinary Medicine, Buenteweg 17, D-30559 Hannover, Germany; Center for Systems Neuroscience, Hannover, Germany
| | - F Hansmann
- Department of Pathology, University of Veterinary Medicine, Buenteweg 17, D-30559 Hannover, Germany; Center for Systems Neuroscience, Hannover, Germany
| | - W Baumgärtner
- Department of Pathology, University of Veterinary Medicine, Buenteweg 17, D-30559 Hannover, Germany; Center for Systems Neuroscience, Hannover, Germany
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37
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Le Moan N, Baeza-Raja B, Akassoglou K. p75NTRand hypoxia: A breath of fresh air in neurotrophin receptor signaling. Cell Cycle 2014; 11:829-30. [DOI: 10.4161/cc.11.5.19436] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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38
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Brito V, Giralt A, Enriquez-Barreto L, Puigdellívol M, Suelves N, Zamora-Moratalla A, Ballesteros JJ, Martín ED, Dominguez-Iturza N, Morales M, Alberch J, Ginés S. Neurotrophin receptor p75(NTR) mediates Huntington's disease-associated synaptic and memory dysfunction. J Clin Invest 2014; 124:4411-28. [PMID: 25180603 PMCID: PMC4191006 DOI: 10.1172/jci74809] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Accepted: 07/29/2014] [Indexed: 12/13/2022] Open
Abstract
Learning and memory deficits are early clinical manifestations of Huntington's disease (HD). These cognitive impairments have been mainly associated with frontostriatal HD pathology; however, compelling evidence provided by several HD murine models suggests that the hippocampus may contribute to synaptic deficits and memory dysfunction in HD. The neurotrophin receptor p75(NTR) negatively regulates spine density, which is associated with learning and memory; therefore, we explored whether disturbed p75(NTR) function in the hippocampus could contribute to synaptic dysfunction and memory deficits in HD. Here, we determined that levels of p75(NTR) are markedly increased in the hippocampus of 2 distinct mouse models of HD and in HD patients. Normalization of p75(NTR) levels in HD mutant mice heterozygous for p75(NTR) prevented memory and synaptic plasticity deficits and ameliorated dendritic spine abnormalities, likely through normalization of the activity of the GTPase RhoA. Moreover, viral-mediated overexpression of p75(NTR) in the hippocampus of WT mice reproduced HD learning and memory deficits, while knockdown of p75(NTR) in the hippocampus of HD mice prevented cognitive decline. Together, these findings provide evidence of hippocampus-associated memory deficits in HD and demonstrate that p75(NTR) mediates synaptic, learning, and memory dysfunction in HD.
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Affiliation(s)
- Verónica Brito
- Departament de Biologia Celηlular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain. Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain. Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain. Structural Synaptic Plasticity Lab, Department of Neurodegenerative Diseases, Centro de Investigación Biomédica de la Rioja, La Rioja, Spain. Laboratory of Neurophysiology and Synaptic Plasticity, Albacete Science and Technology Park (PCyTA), Institute for Research in Neurological Disabilities (IDINE), University of Castilla-La Mancha, Albacete, Spain
| | - Albert Giralt
- Departament de Biologia Celηlular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain. Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain. Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain. Structural Synaptic Plasticity Lab, Department of Neurodegenerative Diseases, Centro de Investigación Biomédica de la Rioja, La Rioja, Spain. Laboratory of Neurophysiology and Synaptic Plasticity, Albacete Science and Technology Park (PCyTA), Institute for Research in Neurological Disabilities (IDINE), University of Castilla-La Mancha, Albacete, Spain
| | - Lilian Enriquez-Barreto
- Departament de Biologia Celηlular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain. Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain. Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain. Structural Synaptic Plasticity Lab, Department of Neurodegenerative Diseases, Centro de Investigación Biomédica de la Rioja, La Rioja, Spain. Laboratory of Neurophysiology and Synaptic Plasticity, Albacete Science and Technology Park (PCyTA), Institute for Research in Neurological Disabilities (IDINE), University of Castilla-La Mancha, Albacete, Spain
| | - Mar Puigdellívol
- Departament de Biologia Celηlular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain. Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain. Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain. Structural Synaptic Plasticity Lab, Department of Neurodegenerative Diseases, Centro de Investigación Biomédica de la Rioja, La Rioja, Spain. Laboratory of Neurophysiology and Synaptic Plasticity, Albacete Science and Technology Park (PCyTA), Institute for Research in Neurological Disabilities (IDINE), University of Castilla-La Mancha, Albacete, Spain
| | - Nuria Suelves
- Departament de Biologia Celηlular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain. Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain. Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain. Structural Synaptic Plasticity Lab, Department of Neurodegenerative Diseases, Centro de Investigación Biomédica de la Rioja, La Rioja, Spain. Laboratory of Neurophysiology and Synaptic Plasticity, Albacete Science and Technology Park (PCyTA), Institute for Research in Neurological Disabilities (IDINE), University of Castilla-La Mancha, Albacete, Spain
| | - Alfonsa Zamora-Moratalla
- Departament de Biologia Celηlular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain. Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain. Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain. Structural Synaptic Plasticity Lab, Department of Neurodegenerative Diseases, Centro de Investigación Biomédica de la Rioja, La Rioja, Spain. Laboratory of Neurophysiology and Synaptic Plasticity, Albacete Science and Technology Park (PCyTA), Institute for Research in Neurological Disabilities (IDINE), University of Castilla-La Mancha, Albacete, Spain
| | - Jesús J. Ballesteros
- Departament de Biologia Celηlular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain. Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain. Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain. Structural Synaptic Plasticity Lab, Department of Neurodegenerative Diseases, Centro de Investigación Biomédica de la Rioja, La Rioja, Spain. Laboratory of Neurophysiology and Synaptic Plasticity, Albacete Science and Technology Park (PCyTA), Institute for Research in Neurological Disabilities (IDINE), University of Castilla-La Mancha, Albacete, Spain
| | - Eduardo D. Martín
- Departament de Biologia Celηlular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain. Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain. Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain. Structural Synaptic Plasticity Lab, Department of Neurodegenerative Diseases, Centro de Investigación Biomédica de la Rioja, La Rioja, Spain. Laboratory of Neurophysiology and Synaptic Plasticity, Albacete Science and Technology Park (PCyTA), Institute for Research in Neurological Disabilities (IDINE), University of Castilla-La Mancha, Albacete, Spain
| | - Nuria Dominguez-Iturza
- Departament de Biologia Celηlular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain. Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain. Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain. Structural Synaptic Plasticity Lab, Department of Neurodegenerative Diseases, Centro de Investigación Biomédica de la Rioja, La Rioja, Spain. Laboratory of Neurophysiology and Synaptic Plasticity, Albacete Science and Technology Park (PCyTA), Institute for Research in Neurological Disabilities (IDINE), University of Castilla-La Mancha, Albacete, Spain
| | - Miguel Morales
- Departament de Biologia Celηlular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain. Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain. Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain. Structural Synaptic Plasticity Lab, Department of Neurodegenerative Diseases, Centro de Investigación Biomédica de la Rioja, La Rioja, Spain. Laboratory of Neurophysiology and Synaptic Plasticity, Albacete Science and Technology Park (PCyTA), Institute for Research in Neurological Disabilities (IDINE), University of Castilla-La Mancha, Albacete, Spain
| | - Jordi Alberch
- Departament de Biologia Celηlular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain. Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain. Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain. Structural Synaptic Plasticity Lab, Department of Neurodegenerative Diseases, Centro de Investigación Biomédica de la Rioja, La Rioja, Spain. Laboratory of Neurophysiology and Synaptic Plasticity, Albacete Science and Technology Park (PCyTA), Institute for Research in Neurological Disabilities (IDINE), University of Castilla-La Mancha, Albacete, Spain
| | - Sílvia Ginés
- Departament de Biologia Celηlular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain. Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain. Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain. Structural Synaptic Plasticity Lab, Department of Neurodegenerative Diseases, Centro de Investigación Biomédica de la Rioja, La Rioja, Spain. Laboratory of Neurophysiology and Synaptic Plasticity, Albacete Science and Technology Park (PCyTA), Institute for Research in Neurological Disabilities (IDINE), University of Castilla-La Mancha, Albacete, Spain
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Meeker R, Williams K. Dynamic nature of the p75 neurotrophin receptor in response to injury and disease. J Neuroimmune Pharmacol 2014; 9:615-28. [PMID: 25239528 DOI: 10.1007/s11481-014-9566-9] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Accepted: 09/03/2014] [Indexed: 12/23/2022]
Abstract
Neurotrophins and their respective tropomyosin related kinase (Trk) receptors (TrkA, TrkB, and TrkC) and the p75 neurotrophin receptor (p75(NTR)) play a fundamental role in the development and maintenance of the nervous system making them important targets for treatment of neurodegenerative diseases. Whereas Trk receptors are directly activated by specific neurotrophins, the p75(NTR) is a multifunctional receptor that exerts its effects via heterodimeric interactions with TrkA, TrkB, TrkC, sortilin or the Nogo receptor to regulate a wide array of cellular functions. By partnering with different receptors the p75(NTR) regulates binding of mature versus pro-neurotrophins and activation of different signaling pathways with outcomes ranging from growth and survival to cell death. While the developmental downregulation of the p75(NTR) has raised questions regarding its role in the mature nervous system, recent data have revealed widespread expression of low levels, a role in synaptic plasticity and adult neurogenesis and upregulation in response to injury or disease. Studies are needed to better understand these processes, particularly in the damaged nervous system, but will be complicated by expression of p75(NTR) on immune cells including macrophages and microglia that are intimately involved in disease and repair processes. Recent approaches that regulate p75(NTR) function with small non-peptide ligands have demonstrated potent neuroprotection in models of injury and neurodegenerative diseases that highlight the importance of the p75(NTR) as a therapeutic target. Future studies hold the promise of revealing a wealth of information on the multifaceted actions of the p75(NTR) that will inform the design of new neurotrophin-based therapies.
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Affiliation(s)
- Rick Meeker
- Department of Neurology, University of North Carolina, CB #7025 6109F Neuroscience Research Building, 115 Mason Farm Road, Chapel Hill, NC, 27599, USA,
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40
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Zhang J, Zhao J, Bai Y, Huang L, Yu W, Li X. Effects of p75 neurotrophin receptor on regulating hypoxia-induced angiogenic factors in retinal pigment epithelial cells. Mol Cell Biochem 2014; 398:123-34. [DOI: 10.1007/s11010-014-2212-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2014] [Accepted: 08/31/2014] [Indexed: 11/29/2022]
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Shakhbazau A, Archibald SJ, Shcharbin D, Bryszewska M, Midha R. Aligned collagen-GAG matrix as a 3D substrate for Schwann cell migration and dendrimer-based gene delivery. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2014; 25:1979-1989. [PMID: 24801062 DOI: 10.1007/s10856-014-5224-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Accepted: 04/21/2014] [Indexed: 06/03/2023]
Abstract
The development of artificial off-the-shelf conduits that facilitate effective nerve regeneration and recovery after repair of traumatic nerve injury gaps is of fundamental importance. Collagen-glycosaminoglycan (GAG) matrix mimicking Schwann cell (SC) basal lamina has been proposed as a suitable and biologically rational substrate for nerve regeneration. In the present study, we have focused on the permissiveness of this matrix type for SC migration and repopulation, as these events play an essential role in nerve remodeling. We have also demonstrated that SCs cultured within collagen-GAG matrix are compatible with non-viral dendrimer-based gene delivery, that may allow conditioning of matrix-embedded cells for future gene therapy applications.
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Affiliation(s)
- Antos Shakhbazau
- Department of Clinical Neuroscience, Faculty of Medicine, University of Calgary, HMRB 109-3330 Hospital Drive NW, Calgary, AB, T2N4N1, Canada,
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New aspects of the pathogenesis of canine distemper leukoencephalitis. Viruses 2014; 6:2571-601. [PMID: 24992230 PMCID: PMC4113784 DOI: 10.3390/v6072571] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Revised: 06/11/2014] [Accepted: 06/17/2014] [Indexed: 12/13/2022] Open
Abstract
Canine distemper virus (CDV) is a member of the genus morbillivirus, which is known to cause a variety of disorders in dogs including demyelinating leukoencephalitis (CDV-DL). In recent years, substantial progress in understanding the pathogenetic mechanisms of CDV-DL has been made. In vivo and in vitro investigations provided new insights into its pathogenesis with special emphasis on axon-myelin-glia interaction, potential endogenous mechanisms of regeneration, and astroglial plasticity. CDV-DL is characterized by lesions with a variable degree of demyelination and mononuclear inflammation accompanied by a dysregulated orchestration of cytokines as well as matrix metalloproteinases and their inhibitors. Despite decades of research, several new aspects of the neuropathogenesis of CDV-DL have been described only recently. Early axonal damage seems to represent an initial and progressive lesion in CDV-DL, which interestingly precedes demyelination. Axonopathy may, thus, function as a potential trigger for subsequent disturbed axon-myelin-glia interactions. In particular, the detection of early axonal damage suggests that demyelination is at least in part a secondary event in CDV-DL, thus challenging the dogma of CDV as a purely primary demyelinating disease. Another unexpected finding refers to the appearance of p75 neurotrophin (NTR)-positive bipolar cells during CDV-DL. As p75NTR is a prototype marker for immature Schwann cells, this finding suggests that Schwann cell remyelination might represent a so far underestimated endogenous mechanism of regeneration, though this hypothesis still remains to be proven. Although it is well known that astrocytes represent the major target of CDV infection in CDV-DL, the detection of infected vimentin-positive astrocytes in chronic lesions indicates a crucial role of this cell population in nervous distemper. While glial fibrillary acidic protein represents the characteristic intermediate filament of mature astrocytes, expression of vimentin is generally restricted to immature or reactive astrocytes. Thus, vimentin-positive astrocytes might constitute an important cell population for CDV persistence and spread, as well as lesion progression. In vitro models, such as dissociated glial cell cultures, as well as organotypic brain slice cultures have contributed to a better insight into mechanisms of infection and certain morphological and molecular aspects of CDV-DL. Summarized, recent in vivo and in vitro studies revealed remarkable new aspects of nervous distemper. These new perceptions substantially improved our understanding of the pathogenesis of CDV-DL and might represent new starting points to develop novel treatment strategies.
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Thakker-Varia S, Behnke J, Doobin D, Dalal V, Thakkar K, Khadim F, Wilson E, Palmieri A, Antila H, Rantamaki T, Alder J. VGF (TLQP-62)-induced neurogenesis targets early phase neural progenitor cells in the adult hippocampus and requires glutamate and BDNF signaling. Stem Cell Res 2014; 12:762-77. [PMID: 24747217 PMCID: PMC4991619 DOI: 10.1016/j.scr.2014.03.005] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Revised: 02/24/2014] [Accepted: 03/18/2014] [Indexed: 01/19/2023] Open
Abstract
The neuropeptide VGF (non-acronymic), which has antidepressant-like effects, enhances adult hippocampal neurogenesis as well as synaptic activity and plasticity in the hippocampus, however the interaction between these processes and the mechanism underlying this regulation remain unclear. In this study, we demonstrate that VGF-derived peptide TLQP-62 specifically enhances the generation of early progenitor cells in nestin-GFP mice. Specifically, TLQP-62 significantly increases the number of Type 2a neural progenitor cells (NPCs) while reducing the number of more differentiated Type 3 cells. The effect of TLQP-62 on proliferation rather than differentiation was confirmed using NPCs in vitro; TLQP-62 but not scrambled peptide PEHN-62 increases proliferation in a cell line as well as in primary progenitors from adult hippocampus. Moreover, TLQP-62 but not scrambled peptide increases Cyclin D mRNA expression. The proliferation of NPCs induced by TLQP-62 requires synaptic activity, in particular through NMDA and metabotropic glutamate receptors. The activation of glutamate receptors by TLQP-62 activation induces phosphorylation of CaMKII through NMDA receptors and protein kinase D through metabotropic glutamate receptor 5 (mGluR5). Furthermore, pharmacological antagonists to CaMKII and PKD inhibit TLQP-62-induced proliferation of NPCs indicating that these signaling molecules downstream of glutamate receptors are essential for the actions of TLQP-62 on neurogenesis. We also show that TLQP-62 gradually activates Brain-Derived Neurotrophic Factor (BDNF)-receptor TrkB in vitro and that Trk signaling is required for TLQP-62-induced proliferation of NPCs. Understanding the precise molecular mechanism of how TLQP-62 influences neurogenesis may reveal mechanisms by which VGF-derived peptides act as antidepressant-like agents.
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Affiliation(s)
- Smita Thakker-Varia
- Department of Neuroscience and Cell Biology, Rutgers University - Robert Wood Johnson Medical School, Piscataway, NJ 08854, USA.
| | - Joseph Behnke
- Department of Neuroscience and Cell Biology, Rutgers University - Robert Wood Johnson Medical School, Piscataway, NJ 08854, USA.
| | - David Doobin
- Department of Neuroscience and Cell Biology, Rutgers University - Robert Wood Johnson Medical School, Piscataway, NJ 08854, USA.
| | - Vidhi Dalal
- Department of Neuroscience and Cell Biology, Rutgers University - Robert Wood Johnson Medical School, Piscataway, NJ 08854, USA.
| | - Keya Thakkar
- Department of Neuroscience and Cell Biology, Rutgers University - Robert Wood Johnson Medical School, Piscataway, NJ 08854, USA.
| | - Farah Khadim
- Department of Neuroscience and Cell Biology, Rutgers University - Robert Wood Johnson Medical School, Piscataway, NJ 08854, USA.
| | - Elizabeth Wilson
- Department of Neuroscience and Cell Biology, Rutgers University - Robert Wood Johnson Medical School, Piscataway, NJ 08854, USA.
| | - Alicia Palmieri
- Department of Neuroscience and Cell Biology, Rutgers University - Robert Wood Johnson Medical School, Piscataway, NJ 08854, USA.
| | - Hanna Antila
- Neuroscience Center, University of Helsinki, P.O. Box 56, Viikinkaari 4, 00014 Helsinki, Finland.
| | - Tomi Rantamaki
- Neuroscience Center, University of Helsinki, P.O. Box 56, Viikinkaari 4, 00014 Helsinki, Finland.
| | - Janet Alder
- Department of Neuroscience and Cell Biology, Rutgers University - Robert Wood Johnson Medical School, Piscataway, NJ 08854, USA.
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Intracerebroventricular administration of nerve growth factor induces gliogenesis in sensory ganglia, dorsal root, and within the dorsal root entry zone. BIOMED RESEARCH INTERNATIONAL 2014; 2014:704259. [PMID: 24738070 PMCID: PMC3971563 DOI: 10.1155/2014/704259] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2013] [Revised: 02/05/2014] [Accepted: 02/05/2014] [Indexed: 12/20/2022]
Abstract
Previous studies indicated that intracerebroventricular administration of nerve growth factor (NGF) leads to massive Schwann cell hyperplasia surrounding the medulla oblongata and spinal cord. This study was designed to characterize the proliferation of peripheral glial cells, that is, Schwann and satellite cells, in the trigeminal ganglia and dorsal root ganglia (DRG) of adult rats during two weeks of NGF infusion using bromodeoxyuridine (BrdU) to label dividing cells. The trigeminal ganglia as well as the cervical and lumbar DRG were analyzed. Along the entire neuraxis a small number of dividing cells were observed within these regions under physiological condition. NGF infusion has dramatically increased the generation of new cells in the neuronal soma and axonal compartments of sensory ganglia and along the dorsal root and the dorsal root entry zone. Quantification of BrdU positive cells within sensory ganglia revealed a 2.3- to 3-fold increase in glial cells compared to controls with a similar response to NGF for the different peripheral ganglia examined. Immunofluorescent labeling with S100β revealed that Schwann and satellite cells underwent mitosis after NGF administration. These data indicate that intracerebroventricular NGF infusion significantly induces gliogenesis in trigeminal ganglia and the spinal sensory ganglia and along the dorsal root entry zone as well as the dorsal root.
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Papa M, De Luca C, Petta F, Alberghina L, Cirillo G. Astrocyte-neuron interplay in maladaptive plasticity. Neurosci Biobehav Rev 2014; 42:35-54. [PMID: 24509064 DOI: 10.1016/j.neubiorev.2014.01.010] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Revised: 01/03/2014] [Accepted: 01/28/2014] [Indexed: 12/21/2022]
Abstract
The complexity of neuronal networks cannot only be explained by neuronal activity so neurobiological research in the last decade has focused on different components of the central nervous system: the glia. Glial cells are fundamental elements for development and maintenance of physiological brain work. New data confirm that glia significantly influences neuronal communication through specific molecules, named "gliotransmitters", and their related receptors. This new approach to the traditional model of the way synapses work is also supported by changes occurring in pathological conditions, such as neurodegenerative diseases or toxic/traumatic injury to nervous system. Experimental models have revealed that glial cells are the starting point of damage progression that subsequently involves neurons. The "bedside to bench" approach has demonstrated that clinical phenotypes are strictly related to neuronal death, however it is conceivable that the disease begins earlier, years before clinical onset. This temporal gap is necessary to determine complex changes in the neuro-glial network organization and produce a "maladaptive plasticity". We review the function of glial cells in health and disease, pointing the putative mechanisms of maladaptive plasticity, suggesting that glial cells may represent a fascinating therapeutic target to prevent irreversible neuronal cell death.
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Affiliation(s)
- Michele Papa
- Laboratory of Neuronal Networks, Department of Mental and Physical Health and Preventive Medicine, Second University of Naples, 80138 Naples, Italy; SYSBIO, Centre of Systems Biology, University of Milano-Bicocca, Milano, Italy.
| | - Ciro De Luca
- Laboratory of Neuronal Networks, Department of Mental and Physical Health and Preventive Medicine, Second University of Naples, 80138 Naples, Italy
| | - Federica Petta
- Laboratory of Neuronal Networks, Department of Mental and Physical Health and Preventive Medicine, Second University of Naples, 80138 Naples, Italy
| | - Lilia Alberghina
- Laboratory of Neuroscience "R. Levi-Montalcini", Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milano, Italy; SYSBIO, Centre of Systems Biology, University of Milano-Bicocca, Milano, Italy
| | - Giovanni Cirillo
- Laboratory of Neuronal Networks, Department of Mental and Physical Health and Preventive Medicine, Second University of Naples, 80138 Naples, Italy
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Lazzari M, Bettini S, Franceschini V. Immunocytochemical characterisation of olfactory ensheathing cells of zebrafish. J Anat 2014; 224:192-206. [PMID: 24164558 PMCID: PMC3969062 DOI: 10.1111/joa.12129] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/25/2013] [Indexed: 01/01/2023] Open
Abstract
Continuous lifelong neurogenesis is typical of the vertebrate olfactory system. The regenerative ability of olfactory receptor neurons is dependent on the glial cell type specific to the olfactory pathway, designated 'olfactory ensheathing cells'. Several studies to date have focused on mammalian olfactory ensheathing cells, owing to their potential roles in cell-based therapy for spinal cord injury repair. However, limited information is available regarding this glial cell type in non-mammalian vertebrates, particularly anamniotes. In the current immunocytochemical study, we analysed the features of olfactory ensheathing cells in the zebrafish, Danio rerio. Fish provide a good model for studying glial cells associated with the olfactory pathway of non-mammalian vertebrates. In particular, zebrafish has numerous valuable features that enable its use as a prime model organism for genetic, neurobiological and developmental studies, as well as toxicology and genomics research. Paraffin sections from decalcified heads of zebrafish were processed immunocytochemically to detect proteins used in the research on mammalian olfactory ensheathing cells, including glial fibrillary acid protein (GFAP), S100, neural cell adhesion molecule (NCAM), polysialylated NCAM (PSA-NCAM), vimentin (VIM), p75NTR and galactin (Gal)-1. Notably, GFAP, S100, NCAM and Gal-1 were clearly observed, whereas no vimentin staining was detected. Weak immunostaining for PSA-NCAM and p75NTR was evident. Moreover the degree of marker expression was not uniform in various tracts of the zebrafish olfactory pathway. The immunostaining patterns of the zebrafish olfactory system are distinct from those of other fish to some extent, suggesting interspecific differences. We also showed that the olfactory pathway of zebrafish expresses markers of mammalian olfactory ensheathing cells. The olfactory systems of vertebrates have similarities but there are also marked variations between them. The issue of whether regional and interspecific differences in immunostaining patterns of olfactory pathway markers have functional significance requires further investigation.
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Affiliation(s)
- Maurizio Lazzari
- Department of Biological, Geological and Environmental Sciences, University of BolognaBologna, Italy
| | - Simone Bettini
- Department of Biological, Geological and Environmental Sciences, University of BolognaBologna, Italy
| | - Valeria Franceschini
- Department of Biological, Geological and Environmental Sciences, University of BolognaBologna, Italy
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Kraemer BR, Yoon SO, Carter BD. The biological functions and signaling mechanisms of the p75 neurotrophin receptor. Handb Exp Pharmacol 2014; 220:121-164. [PMID: 24668472 DOI: 10.1007/978-3-642-45106-5_6] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The p75 neurotrophin receptor (p75(NTR)) regulates a wide range of cellular functions, including programmed cell death, axonal growth and degeneration, cell proliferation, myelination, and synaptic plasticity. The multiplicity of cellular functions governed by the receptor arises from the variety of ligands and co-receptors which associate with p75(NTR) and regulate its signaling. P75(NTR) promotes survival through interactions with Trk receptors, inhibits axonal regeneration via partnerships with Nogo receptor (Nogo-R) and Lingo-1, and promotes apoptosis through association with Sortilin. Signals downstream of these interactions are further modulated through regulated intramembrane proteolysis (RIP) of p75(NTR) and by interactions with numerous cytosolic partners. In this chapter, we discuss the intricate signaling mechanisms of p75(NTR), emphasizing how these signals are differentially regulated to mediate these diverse cellular functions.
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Affiliation(s)
- B R Kraemer
- Department of Biochemistry, Vanderbilt University School of Medicine, 625 Light Hall, Nashville, TN, 37232, USA
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48
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Wang W, Chen J, Guo X. The role of nerve growth factor and its receptors in tumorigenesis and cancer pain. Biosci Trends 2014; 8:68-74. [DOI: 10.5582/bst.8.68] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Raucci F, Tiong JD, Wray S. P75 nerve growth factor receptors modulate development of GnRH neurons and olfactory ensheating cells. Front Neurosci 2013; 7:262. [PMID: 24409113 PMCID: PMC3873506 DOI: 10.3389/fnins.2013.00262] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Accepted: 12/16/2013] [Indexed: 01/31/2023] Open
Abstract
Temporal and spatial localization of nerve growth factor receptor (p75NGFR) in the developing olfactory system and gonadotropin-releasing hormone-1 (GnRH) system was characterized and its role analyzed using p75NGFR null mice and nasal explants. Prenatally, p75NGFR was expressed by GnRH neurons and olfactory ensheathing cells (OECs). In p75NGFR null mice, no change in the number of GnRH cells was detected as compared to wild-type. However, in null mice, a shift in the distribution of GnRH neurons was found, with a small population of GnRH cells migrating further caudally toward the median eminence. Additionally, a reduction of both GAD67 positive olfactory axons and GFAP positive OEC fibers occurred. Acute administration of a p75NGFR blocker to GnRH cells maintained in vitro increased migration rate, consistent with the change in distribution detected in p75NGFR null mice. Chronic inhibition of p75NGFR caused an attenuation of olfactory axon fasciculation and a decrease in OEC density, again mimicking the changes detected in null mice. However, a reduction in GnRH cell number was found after chronic treatment that not observed in KO animals suggesting indirect changes occur during chronic treatment in vitro and/or a compensatory mechanism occurs in vivo that prevents loss of GnRH neurons in the absence of p75NGFR.
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Affiliation(s)
- Franca Raucci
- Cellular and Developmental Neurobiology Section, National Institute of Neurological Disorders and Strokes, National Institutes of Health Bethesda, MD, USA
| | - Jean D Tiong
- Cellular and Developmental Neurobiology Section, National Institute of Neurological Disorders and Strokes, National Institutes of Health Bethesda, MD, USA
| | - Susan Wray
- Cellular and Developmental Neurobiology Section, National Institute of Neurological Disorders and Strokes, National Institutes of Health Bethesda, MD, USA
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Mukhatyar V, Pai B, Clements I, Srinivasan A, Huber R, Mehta A, Mukhopadaya S, Rudra S, Patel G, Karumbaiah L, Bellamkonda R. Molecular sequelae of topographically guided peripheral nerve repair. Ann Biomed Eng 2013; 42:1436-55. [PMID: 24356852 DOI: 10.1007/s10439-013-0960-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Accepted: 12/07/2013] [Indexed: 12/17/2022]
Abstract
Peripheral nerve injuries cause severe disability with decreased nerve function often followed by neuropathic pain that impacts the quality of life. Even though use of autografts is the current gold standard, nerve conduits fabricated from electrospun nanofibers have shown promise to successfully bridge critical length nerve gaps. However, in depth analysis of the role of topographical cues in the context of spatio-temporal progression of the regenerative sequence has not been elucidated. Here, we explored the influence of topographical cues (aligned, random, and smooth films) on the regenerative sequence and potential to successfully support nerve regeneration in critical size gaps. A number of key findings emerged at the cellular, cytokine and molecular levels from the study. Higher quantities of IL-1α and TNF-α were detected in aligned fiber based scaffolds. Differential gene expression of BDNF, NGFR, ErbB2, and ErbB3 were observed suggesting a role for these genes in influencing Schwann cell migration, myelination, etc. that impact the regeneration in various topographies. Fibrin matrix stabilization and arrest of nerve-innervated muscle atrophy was also evident. Taken together, our data shed light on the cascade of events that favor regeneration in aligned topography and should stimulate research to further refine the strategy of nerve regeneration using topographical cues.
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Affiliation(s)
- Vivek Mukhatyar
- Neurological Biomaterials and Cancer Therapeutics Laboratory, Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology/Emory University School of Medicine, UA Whitaker Building, 313 Ferst Drive, Atlanta, GA, 30332-0535, USA
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