1
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Gomez-Gutierrez R, Ghosh U, Yau WM, Gamez N, Do K, Kramm C, Shirani H, Vegas-Gomez L, Schulz J, Moreno-Gonzalez I, Gutierrez A, Nilsson KPR, Tycko R, Soto C, Morales R. Two structurally defined Aβ polymorphs promote different pathological changes in susceptible mice. EMBO Rep 2023:e57003. [PMID: 37424505 PMCID: PMC10398671 DOI: 10.15252/embr.202357003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 05/10/2023] [Accepted: 05/16/2023] [Indexed: 07/11/2023] Open
Abstract
Misfolded Aβ is involved in the progression of Alzheimer's disease (AD). However, the role of its polymorphic variants or conformational strains in AD pathogenesis is not fully understood. Here, we study the seeding properties of two structurally defined synthetic misfolded Aβ strains (termed 2F and 3F) using in vitro and in vivo assays. We show that 2F and 3F strains differ in their biochemical properties, including resistance to proteolysis, binding to strain-specific dyes, and in vitro seeding. Injection of these strains into a transgenic mouse model produces different pathological features, namely different rates of aggregation, formation of different plaque types, tropism to specific brain regions, differential recruitment of Aβ40 /Aβ42 peptides, and induction of microglial and astroglial responses. Importantly, the aggregates induced by 2F and 3F are structurally different as determined by ssNMR. Our study analyzes the biological properties of purified Aβ polymorphs that have been characterized at the atomic resolution level and provides relevant information on the pathological significance of misfolded Aβ strains.
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Grants
- AARGD-18-566576 Alzheimer's Association (AA)
- PI21/00915 European Union
- P18-RT-2233 Consejería de Economía, Conocimiento, Empresas y Universidad, Junta de Andalucía (Ministry of Economy, Knowledge, Business and University, Andalusia)
- UMA18-FEDERJA-211 Consejería de Economía, Innovación, Ciencia y Empleo, Junta de Andalucía (Ministry of Economy, Innovation, Science and Employment, Government of Andalucia)
- PI21/00915 MEC | Instituto de Salud Carlos III (ISCIII)
- R56AG061878 National Institutes of Health (USA)
- RF1AG059321 National Institutes of Health (USA)
- Z01-DK029061-14 National Institutes of Health (USA)
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Affiliation(s)
- Ruben Gomez-Gutierrez
- Department of Neurology, The University of Texas Health Science Center at Houston, Houston, TX, USA
- Dpto. Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain
| | - Ujjayini Ghosh
- Laboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Wai-Ming Yau
- Laboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Nazaret Gamez
- Department of Neurology, The University of Texas Health Science Center at Houston, Houston, TX, USA
- Dpto. Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain
| | - Katherine Do
- Department of Neurology, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Carlos Kramm
- Department of Neurology, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Hamid Shirani
- Department of Physics, Chemistry and Biology, Linköping University, Linköping, Sweden
| | - Laura Vegas-Gomez
- Dpto. Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain
| | - Jonathan Schulz
- Department of Neurology, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Ines Moreno-Gonzalez
- Department of Neurology, The University of Texas Health Science Center at Houston, Houston, TX, USA
- Dpto. Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
- Centro Integrativo de Biologia y Quimica Aplicada (CIBQA), Universidad Bernardo O'Higgins, Santiago, Chile
| | - Antonia Gutierrez
- Dpto. Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - K Peter R Nilsson
- Department of Physics, Chemistry and Biology, Linköping University, Linköping, Sweden
| | - Robert Tycko
- Laboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Claudio Soto
- Department of Neurology, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Rodrigo Morales
- Department of Neurology, The University of Texas Health Science Center at Houston, Houston, TX, USA
- Centro Integrativo de Biologia y Quimica Aplicada (CIBQA), Universidad Bernardo O'Higgins, Santiago, Chile
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2
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Muñoz-Castro C, Mejias-Ortega M, Sanchez-Mejias E, Navarro V, Trujillo-Estrada L, Jimenez S, Garcia-Leon JA, Fernandez-Valenzuela JJ, Sanchez-Mico MV, Romero-Molina C, Moreno-Gonzalez I, Baglietto-Vargas D, Vizuete M, Gutierrez A, Vitorica J. Monocyte-derived cells invade brain parenchyma and amyloid plaques in human Alzheimer's disease hippocampus. Acta Neuropathol Commun 2023; 11:31. [PMID: 36855152 PMCID: PMC9976401 DOI: 10.1186/s40478-023-01530-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 02/14/2023] [Indexed: 03/02/2023] Open
Abstract
Microglia are brain-resident myeloid cells and play a major role in the innate immune responses of the CNS and the pathogenesis of Alzheimer's disease (AD). However, the contribution of nonparenchymal or brain-infiltrated myeloid cells to disease progression remains to be demonstrated. Here, we show that monocyte-derived cells (MDC) invade brain parenchyma in advanced stages of AD continuum using transcriptional analysis and immunohistochemical characterization in post-mortem human hippocampus. Our findings demonstrated that a high proportion (60%) of demented Braak V-VI individuals was associated with up-regulation of genes rarely expressed by microglial cells and abundant in monocytes, among which stands the membrane-bound scavenger receptor for haptoglobin/hemoglobin complexes or Cd163. These Cd163-positive MDC invaded the hippocampal parenchyma, acquired a microglial-like morphology, and were located in close proximity to blood vessels. Moreover, and most interesting, these invading monocytes infiltrated the nearby amyloid plaques contributing to plaque-associated myeloid cell heterogeneity. However, in aged-matched control individuals with hippocampal amyloid pathology, no signs of MDC brain infiltration or plaque invasion were found. The previously reported microglial degeneration/dysfunction in AD hippocampus could be a key pathological factor inducing MDC recruitment. Our data suggest a clear association between MDC infiltration and endothelial activation which in turn may contribute to damage of the blood brain barrier integrity. The recruitment of monocytes could be a consequence rather than the cause of the severity of the disease. Whether monocyte infiltration is beneficial or detrimental to AD pathology remains to be fully elucidated. These findings open the opportunity to design targeted therapies, not only for microglia but also for the peripheral immune cell population to modulate amyloid pathology and provide a better understanding of the immunological mechanisms underlying the progression of AD.
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Affiliation(s)
- Clara Muñoz-Castro
- Dpto. Bioquimica Y Biologia Molecular, Facultad de Farmacia, Universidad de Sevilla, C/ Prof. Garcia Gonzalez 2, 41012, Seville, Spain.,Instituto de Biomedicina de Sevilla (IBiS)-Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, 41013, Seville, Spain.,Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031, Madrid, Spain
| | - Marina Mejias-Ortega
- Dpto. Biologia Celular, Genetica y Fisiologia, Instituto de Investigación Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, Campus de Teatinos S/N, 29071, Malaga, Spain.,Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031, Madrid, Spain
| | - Elisabeth Sanchez-Mejias
- Dpto. Biologia Celular, Genetica y Fisiologia, Instituto de Investigación Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, Campus de Teatinos S/N, 29071, Malaga, Spain.,Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031, Madrid, Spain
| | - Victoria Navarro
- Dpto. Bioquimica Y Biologia Molecular, Facultad de Farmacia, Universidad de Sevilla, C/ Prof. Garcia Gonzalez 2, 41012, Seville, Spain.,Instituto de Biomedicina de Sevilla (IBiS)-Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, 41013, Seville, Spain.,Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031, Madrid, Spain
| | - Laura Trujillo-Estrada
- Dpto. Biologia Celular, Genetica y Fisiologia, Instituto de Investigación Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, Campus de Teatinos S/N, 29071, Malaga, Spain.,Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031, Madrid, Spain
| | - Sebastian Jimenez
- Dpto. Bioquimica Y Biologia Molecular, Facultad de Farmacia, Universidad de Sevilla, C/ Prof. Garcia Gonzalez 2, 41012, Seville, Spain.,Instituto de Biomedicina de Sevilla (IBiS)-Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, 41013, Seville, Spain.,Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031, Madrid, Spain
| | - Juan Antonio Garcia-Leon
- Dpto. Biologia Celular, Genetica y Fisiologia, Instituto de Investigación Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, Campus de Teatinos S/N, 29071, Malaga, Spain.,Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031, Madrid, Spain
| | - Juan Jose Fernandez-Valenzuela
- Dpto. Biologia Celular, Genetica y Fisiologia, Instituto de Investigación Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, Campus de Teatinos S/N, 29071, Malaga, Spain.,Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031, Madrid, Spain
| | - Maria Virtudes Sanchez-Mico
- Dpto. Bioquimica Y Biologia Molecular, Facultad de Farmacia, Universidad de Sevilla, C/ Prof. Garcia Gonzalez 2, 41012, Seville, Spain.,Instituto de Biomedicina de Sevilla (IBiS)-Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, 41013, Seville, Spain.,Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031, Madrid, Spain
| | - Carmen Romero-Molina
- Dpto. Bioquimica Y Biologia Molecular, Facultad de Farmacia, Universidad de Sevilla, C/ Prof. Garcia Gonzalez 2, 41012, Seville, Spain.,Instituto de Biomedicina de Sevilla (IBiS)-Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, 41013, Seville, Spain.,Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031, Madrid, Spain
| | - Ines Moreno-Gonzalez
- Dpto. Biologia Celular, Genetica y Fisiologia, Instituto de Investigación Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, Campus de Teatinos S/N, 29071, Malaga, Spain.,Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031, Madrid, Spain
| | - David Baglietto-Vargas
- Dpto. Biologia Celular, Genetica y Fisiologia, Instituto de Investigación Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, Campus de Teatinos S/N, 29071, Malaga, Spain.,Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031, Madrid, Spain
| | - Marisa Vizuete
- Dpto. Bioquimica Y Biologia Molecular, Facultad de Farmacia, Universidad de Sevilla, C/ Prof. Garcia Gonzalez 2, 41012, Seville, Spain.,Instituto de Biomedicina de Sevilla (IBiS)-Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, 41013, Seville, Spain.,Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031, Madrid, Spain
| | - Antonia Gutierrez
- Dpto. Biologia Celular, Genetica y Fisiologia, Instituto de Investigación Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, Campus de Teatinos S/N, 29071, Malaga, Spain. .,Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031, Madrid, Spain.
| | - Javier Vitorica
- Dpto. Bioquimica Y Biologia Molecular, Facultad de Farmacia, Universidad de Sevilla, C/ Prof. Garcia Gonzalez 2, 41012, Seville, Spain. .,Instituto de Biomedicina de Sevilla (IBiS)-Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, 41013, Seville, Spain. .,Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031, Madrid, Spain.
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3
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Quan L, Moreno-Gonzalez I, Xie Z, Gamez N, Vegas-Gomez L, Song Q, Gu J, Lin W, Gomez-Gutierrez R, Wu T. A near-infrared probe for detecting and interposing amyloid beta oligomerization in early Alzheimer's disease. Alzheimers Dement 2023; 19:456-466. [PMID: 35436382 DOI: 10.1002/alz.12673] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 02/20/2022] [Accepted: 02/23/2022] [Indexed: 11/07/2022]
Abstract
BACKGROUND The misfolding and deposition of amyloid beta (Aβ) in human brain is the main hallmark of Alzheimer's disease (AD) pathology. One of the drivers of Alzheimer´s pathogenesis is the production of soluble oligomeric Aβ, which could potentially serve as a biomarker of AD. METHODS Given that the diphenylalanine (FF) at the C-terminus of Aβ fragments plays a key role in inducing the AD pathology, based on the hydrophobic structure of FF, we synthesized a near-infrared BF2-dipyrrolmethane fluorescent imaging probe (NB) to detect both soluble and insoluble Aβ. RESULTS We found that NB not only binds Aβ, particularly oligomeric Aβ, but also interposes self-assembly of Aβ through π-π interaction between NB and FF. CONCLUSION This work holds great promise in the early detection of AD and may also provide an innovative approach to decelerate and even halt AD onset and progression.
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Affiliation(s)
- Li Quan
- Jiangsu Provincial Engineering Research Center for Biomedical Materials and Advanced Medical Devices, Faculty of Mechanical and Material Engineering, Huaiyin Institute of Technology, Huai'an, Jiangsu Province, China.,Department of Biomedical Engineering, University of Houston, Houston, Texas, USA
| | - Ines Moreno-Gonzalez
- The University of Texas Health Science Center at Houston, Houston, Texas, USA.,Department of Cell Biology, Genetic and Physiology, Faculty of Sciences, Instituto de Investigacion Biomedica de Malaga-IBIMA, Spain.,Networking Research Center on Neurodegenerative Diseases (CIBERNED), University of Malaga, Malaga, Spain
| | - Zhigang Xie
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China
| | - Nazaret Gamez
- The University of Texas Health Science Center at Houston, Houston, Texas, USA.,Department of Cell Biology, Genetic and Physiology, Faculty of Sciences, Instituto de Investigacion Biomedica de Malaga-IBIMA, Spain
| | - Laura Vegas-Gomez
- Department of Cell Biology, Genetic and Physiology, Faculty of Sciences, Instituto de Investigacion Biomedica de Malaga-IBIMA, Spain
| | - Qinyong Song
- Jiangsu Provincial Engineering Research Center for Biomedical Materials and Advanced Medical Devices, Faculty of Mechanical and Material Engineering, Huaiyin Institute of Technology, Huai'an, Jiangsu Province, China
| | - Jianhua Gu
- Electron Microscopy Core, Houston Methodist Research Institute, Houston, Texas, USA
| | - Wenhai Lin
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China
| | - Ruben Gomez-Gutierrez
- The University of Texas Health Science Center at Houston, Houston, Texas, USA.,Department of Cell Biology, Genetic and Physiology, Faculty of Sciences, Instituto de Investigacion Biomedica de Malaga-IBIMA, Spain
| | - Tianfu Wu
- Department of Biomedical Engineering, University of Houston, Houston, Texas, USA
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4
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Urayama A, Moreno-Gonzalez I, Morales-Scheihing D, Kharat V, Pritzkow S, Soto C. Preventive and therapeutic reduction of amyloid deposition and behavioral impairments in a model of Alzheimer's disease by whole blood exchange. Mol Psychiatry 2022; 27:4285-4296. [PMID: 35835859 PMCID: PMC10601825 DOI: 10.1038/s41380-022-01679-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 06/07/2022] [Accepted: 06/27/2022] [Indexed: 02/07/2023]
Abstract
Alzheimer's disease (AD) is the major form of dementia in the elderly population. The main neuropathological changes in AD patients are neuronal death, synaptic alterations, brain inflammation, and the presence of cerebral protein aggregates in the form of amyloid plaques and neurofibrillary tangles. Compelling evidence suggests that the misfolding, aggregation, and cerebral deposition of amyloid-beta (Aβ) plays a central role in the disease. Thus, prevention and removal of misfolded protein aggregates is considered a promising strategy to treat AD. In the present study, we describe that the development of cerebral amyloid plaques in a transgenic mice model of AD (Tg2576) was significantly reduced by 40-80% through exchanging whole blood with normal blood from wild type mice having the same genetic background. Importantly, such reduction resulted in improvement in spatial memory performance in aged Tg2576 mice. The exact mechanism by which blood exchange reduces amyloid pathology and improves memory is presently unknown, but measurements of Aβ in plasma soon after blood exchange suggest that mobilization of Aβ from the brain to blood may be implicated. Our results suggest that a target for AD therapy may exist in the peripheral circulation, which could open a novel disease-modifying intervention for AD.
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Affiliation(s)
- Akihiko Urayama
- Mitchell Center for Alzheimer's disease and related Brain disorders, Department of Neurology, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, USA.
| | - Ines Moreno-Gonzalez
- Mitchell Center for Alzheimer's disease and related Brain disorders, Department of Neurology, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, USA
- Department of Cell Biology, Genetic and Physiology, Faculty of Sciences, Instituto de Investigacion Biomedica de Malaga-IBIMA, Networking Research Center on Neurodegenerative Diseases (CIBERNED), University of Malaga, Málaga, Spain
| | - Diego Morales-Scheihing
- Mitchell Center for Alzheimer's disease and related Brain disorders, Department of Neurology, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Vineetkumar Kharat
- Mitchell Center for Alzheimer's disease and related Brain disorders, Department of Neurology, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Sandra Pritzkow
- Mitchell Center for Alzheimer's disease and related Brain disorders, Department of Neurology, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Claudio Soto
- Mitchell Center for Alzheimer's disease and related Brain disorders, Department of Neurology, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, USA.
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5
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Sanchez-Varo R, Mejias-Ortega M, Fernandez-Valenzuela JJ, Nuñez-Diaz C, Caceres-Palomo L, Vegas-Gomez L, Sanchez-Mejias E, Trujillo-Estrada L, Garcia-Leon JA, Moreno-Gonzalez I, Vizuete M, Vitorica J, Baglietto-Vargas D, Gutierrez A. Transgenic Mouse Models of Alzheimer's Disease: An Integrative Analysis. Int J Mol Sci 2022; 23:5404. [PMID: 35628216 PMCID: PMC9142061 DOI: 10.3390/ijms23105404] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Accepted: 05/10/2022] [Indexed: 12/16/2022] Open
Abstract
Alzheimer's disease (AD) constitutes the most prominent form of dementia among elderly individuals worldwide. Disease modeling using murine transgenic mice was first initiated thanks to the discovery of heritable mutations in amyloid precursor protein (APP) and presenilins (PS) genes. However, due to the repeated failure of translational applications from animal models to human patients, along with the recent advances in genetic susceptibility and our current understanding on disease biology, these models have evolved over time in an attempt to better reproduce the complexity of this devastating disease and improve their applicability. In this review, we provide a comprehensive overview about the major pathological elements of human AD (plaques, tauopathy, synaptic damage, neuronal death, neuroinflammation and glial dysfunction), discussing the knowledge that available mouse models have provided about the mechanisms underlying human disease. Moreover, we highlight the pros and cons of current models, and the revolution offered by the concomitant use of transgenic mice and omics technologies that may lead to a more rapid improvement of the present modeling battery.
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Affiliation(s)
- Raquel Sanchez-Varo
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, 29071 Malaga, Spain; (R.S.-V.); (M.M.-O.); (J.J.F.-V.); (C.N.-D.); (L.C.-P.); (L.V.-G.); (E.S.-M.); (L.T.-E.); (J.A.G.-L.); (I.M.-G.)
- Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain; (M.V.); (J.V.)
- Departamento Fisiologia Humana, Histologia Humana, Anatomia Patologica y Educacion Fisica y Deportiva, Facultad de Medicina, Universidad de Malaga, 29071 Malaga, Spain
| | - Marina Mejias-Ortega
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, 29071 Malaga, Spain; (R.S.-V.); (M.M.-O.); (J.J.F.-V.); (C.N.-D.); (L.C.-P.); (L.V.-G.); (E.S.-M.); (L.T.-E.); (J.A.G.-L.); (I.M.-G.)
- Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain; (M.V.); (J.V.)
| | - Juan Jose Fernandez-Valenzuela
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, 29071 Malaga, Spain; (R.S.-V.); (M.M.-O.); (J.J.F.-V.); (C.N.-D.); (L.C.-P.); (L.V.-G.); (E.S.-M.); (L.T.-E.); (J.A.G.-L.); (I.M.-G.)
- Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain; (M.V.); (J.V.)
| | - Cristina Nuñez-Diaz
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, 29071 Malaga, Spain; (R.S.-V.); (M.M.-O.); (J.J.F.-V.); (C.N.-D.); (L.C.-P.); (L.V.-G.); (E.S.-M.); (L.T.-E.); (J.A.G.-L.); (I.M.-G.)
- Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain; (M.V.); (J.V.)
| | - Laura Caceres-Palomo
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, 29071 Malaga, Spain; (R.S.-V.); (M.M.-O.); (J.J.F.-V.); (C.N.-D.); (L.C.-P.); (L.V.-G.); (E.S.-M.); (L.T.-E.); (J.A.G.-L.); (I.M.-G.)
- Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain; (M.V.); (J.V.)
| | - Laura Vegas-Gomez
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, 29071 Malaga, Spain; (R.S.-V.); (M.M.-O.); (J.J.F.-V.); (C.N.-D.); (L.C.-P.); (L.V.-G.); (E.S.-M.); (L.T.-E.); (J.A.G.-L.); (I.M.-G.)
- Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain; (M.V.); (J.V.)
| | - Elisabeth Sanchez-Mejias
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, 29071 Malaga, Spain; (R.S.-V.); (M.M.-O.); (J.J.F.-V.); (C.N.-D.); (L.C.-P.); (L.V.-G.); (E.S.-M.); (L.T.-E.); (J.A.G.-L.); (I.M.-G.)
- Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain; (M.V.); (J.V.)
| | - Laura Trujillo-Estrada
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, 29071 Malaga, Spain; (R.S.-V.); (M.M.-O.); (J.J.F.-V.); (C.N.-D.); (L.C.-P.); (L.V.-G.); (E.S.-M.); (L.T.-E.); (J.A.G.-L.); (I.M.-G.)
- Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain; (M.V.); (J.V.)
| | - Juan Antonio Garcia-Leon
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, 29071 Malaga, Spain; (R.S.-V.); (M.M.-O.); (J.J.F.-V.); (C.N.-D.); (L.C.-P.); (L.V.-G.); (E.S.-M.); (L.T.-E.); (J.A.G.-L.); (I.M.-G.)
- Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain; (M.V.); (J.V.)
| | - Ines Moreno-Gonzalez
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, 29071 Malaga, Spain; (R.S.-V.); (M.M.-O.); (J.J.F.-V.); (C.N.-D.); (L.C.-P.); (L.V.-G.); (E.S.-M.); (L.T.-E.); (J.A.G.-L.); (I.M.-G.)
- Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain; (M.V.); (J.V.)
- Department of Neurology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Marisa Vizuete
- Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain; (M.V.); (J.V.)
- Departamento Bioquimica y Biologia Molecular, Facultad de Farmacia, Universidad de Sevilla, Instituto de Biomedicina de Sevilla (IBIS)-Hospital Universitario Virgen del Rocio/CSIC, 41012 Seville, Spain
| | - Javier Vitorica
- Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain; (M.V.); (J.V.)
- Departamento Bioquimica y Biologia Molecular, Facultad de Farmacia, Universidad de Sevilla, Instituto de Biomedicina de Sevilla (IBIS)-Hospital Universitario Virgen del Rocio/CSIC, 41012 Seville, Spain
| | - David Baglietto-Vargas
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, 29071 Malaga, Spain; (R.S.-V.); (M.M.-O.); (J.J.F.-V.); (C.N.-D.); (L.C.-P.); (L.V.-G.); (E.S.-M.); (L.T.-E.); (J.A.G.-L.); (I.M.-G.)
- Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain; (M.V.); (J.V.)
| | - Antonia Gutierrez
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, 29071 Malaga, Spain; (R.S.-V.); (M.M.-O.); (J.J.F.-V.); (C.N.-D.); (L.C.-P.); (L.V.-G.); (E.S.-M.); (L.T.-E.); (J.A.G.-L.); (I.M.-G.)
- Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain; (M.V.); (J.V.)
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Salvadores N, Moreno-Gonzalez I, Gamez N, Quiroz G, Vegas-Gomez L, Escandón M, Jimenez S, Vitorica J, Gutierrez A, Soto C, Court FA. Aβ oligomers trigger necroptosis-mediated neurodegeneration via microglia activation in Alzheimer's disease. Acta Neuropathol Commun 2022; 10:31. [PMID: 35264247 PMCID: PMC8908658 DOI: 10.1186/s40478-022-01332-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 02/18/2022] [Indexed: 11/12/2022] Open
Abstract
Alzheimer’s disease (AD) is a major adult-onset neurodegenerative condition with no available treatment. Compelling reports point amyloid-β (Aβ) as the main etiologic agent that triggers AD. Although there is extensive evidence of detrimental crosstalk between Aβ and microglia that contributes to neuroinflammation in AD, the exact mechanism leading to neuron death remains unknown. Using postmortem human AD brain tissue, we show that Aβ pathology is associated with the necroptosis effector pMLKL. Moreover, we found that the burden of Aβ oligomers (Aβo) correlates with the expression of key markers of necroptosis activation. Additionally, inhibition of necroptosis by pharmacological or genetic means, reduce neurodegeneration and memory impairment triggered by Aβo in mice. Since microglial activation is emerging as a central driver for AD pathogenesis, we then tested the contribution of microglia to the mechanism of Aβo-mediated necroptosis activation in neurons. Using an in vitro model, we show that conditioned medium from Aβo-stimulated microglia elicited necroptosis in neurons through activation of TNF-α signaling, triggering extensive neurodegeneration. Notably, necroptosis inhibition provided significant neuronal protection. Together, these findings suggest that Aβo-mediated microglia stimulation in AD contributes to necroptosis activation in neurons and neurodegeneration. As necroptosis is a druggable degenerative mechanism, our findings might have important therapeutic implications to prevent the progression of AD.
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Freude KK, Moreno-Gonzalez I, Rodriguez-Ortiz CJ, Baglietto-Vargas D. Editorial: Metabolic Alterations in Neurodegenerative Disorders. Front Aging Neurosci 2022; 14:833109. [PMID: 35250547 PMCID: PMC8894844 DOI: 10.3389/fnagi.2022.833109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 01/25/2022] [Indexed: 11/13/2022] Open
Affiliation(s)
- Kristine K. Freude
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Ines Moreno-Gonzalez
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga, Facultad de Ciencias, Universidad de Malaga, Malaga, Spain
- Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas, Madrid, Spain
| | - Carlos J. Rodriguez-Ortiz
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, Irvine, CA, United States
| | - David Baglietto-Vargas
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga, Facultad de Ciencias, Universidad de Malaga, Malaga, Spain
- Centro de Investigacion Biomedica en Red Sobre Enfermedades Neurodegenerativas, Madrid, Spain
- *Correspondence: David Baglietto-Vargas
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8
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Duran-Aniotz C, Moreno-Gonzalez I, Medinas DB, Morales R. Editorial: Protein Misfolding and Proteostasis Impairment in Aging and Neurodegeneration: From Spreading Studies to Therapeutic Approaches. Front Aging Neurosci 2022; 13:830779. [PMID: 35221985 PMCID: PMC8864239 DOI: 10.3389/fnagi.2021.830779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 12/22/2021] [Indexed: 11/13/2022] Open
Affiliation(s)
- Claudia Duran-Aniotz
- Latin American Institute for Brain Health (BrainLat), Universidad Adolfo Ibanez, Santiago, Chile
- Center for Social and Cognitive Neuroscience, School of Psychology, Universidad Adolfo Ibanez, Santiago, Chile
- *Correspondence: Claudia Duran-Aniotz
| | - Ines Moreno-Gonzalez
- Departamento Biologia Celular, Genetica y Fisiologia, Facultad de Ciencias, Instituto de Investigacion Biomedica de Malaga-IBIMA, Universidad de Malaga, Málaga, Spain
- Networking Research Center on Neurodegenerative Diseases (CIBERNED), Madrid, Spain
- Centro Integrativo de Biología y Química Aplicada, Universidad Bernardo O'Higgins, Santiago, Chile
- Department of Neurology, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Danilo B. Medinas
- Biomedical Neuroscience Institute, Faculty of Medicine, University of Chile, Santiago, Chile
- Center for Geroscience, Brain Health and Metabolism, Santiago, Chile
- Program of Cellular and Molecular Biology, Center for Molecular Studies of the Cell, Institute of Biomedical Sciences, University of Chile, Santiago, Chile
| | - Rodrigo Morales
- Centro Integrativo de Biología y Química Aplicada, Universidad Bernardo O'Higgins, Santiago, Chile
- Department of Neurology, The University of Texas Health Science Center at Houston, Houston, TX, United States
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9
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Moreno-Gonzalez I, Edwards G, Morales R, Duran-Aniotz C, Escobedo G, Marquez M, Pumarola M, Soto C. Aged Cattle Brain Displays Alzheimer's Disease-Like Pathology and Promotes Brain Amyloidosis in a Transgenic Animal Model. Front Aging Neurosci 2022; 13:815361. [PMID: 35173603 PMCID: PMC8841674 DOI: 10.3389/fnagi.2021.815361] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 12/17/2021] [Indexed: 11/17/2022] Open
Abstract
Alzheimer's disease (AD) is one of the leading causes of dementia in late life. Although the cause of AD neurodegenerative changes is not fully understood, extensive evidence suggests that the misfolding, aggregation and cerebral accumulation of amyloid beta (Aβ) and tau proteins are hallmark events. Recent reports have shown that protein misfolding and aggregation can be induced by administration of small quantities of preformed aggregates, following a similar principle by which prion diseases can be transmitted by infection. In the past few years, many of the typical properties that characterize prions as infectious agents were also shown in Aβ aggregates. Interestingly, prion diseases affect not only humans, but also various species of mammals, and it has been demonstrated that infectious prions present in animal tissues, particularly cattle affected by bovine spongiform encephalopathy (BSE), can infect humans. It has been reported that protein deposits resembling Aβ amyloid plaques are present in the brain of several aged non-human mammals, including monkeys, bears, dogs, and cheetahs. In this study, we investigated the presence of Aβ aggregates in the brain of aged cattle, their similarities with the protein deposits observed in AD patients, and their capability to promote AD pathological features when intracerebrally inoculated into transgenic animal models of AD. Our data show that aged cattle can develop AD-like neuropathological abnormalities, including amyloid plaques, as studied histologically. Importantly, cow-derived aggregates accelerate Aβ amyloid deposition in the brain of AD transgenic animals. Surprisingly, the rate of induction produced by administration of the cattle material was substantially higher than induction produced by injection of similar amounts of human AD material. Our findings demonstrate that cows develop seeding-competent Aβ aggregates, similarly as observed in AD patients.
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Affiliation(s)
- Ines Moreno-Gonzalez
- Department of Neurology, Mitchell Center for Alzheimer's Disease and Related Brain Disorders, University of Texas Health Science Center at Houston, Houston, TX, United States
- Departamento Biología Celular, Genética y Fisiología, Instituto de Investigacion Biomedica de Malaga-IBIMA, Universidad de Malaga, Malaga, Spain
- Center for Biomedical Research on Neurodegenerative Diseases (CIBERNED), Madrid, Spain
- Centro Integrativo de Biologia y Quimica Aplicada (CIBQA), Universidad Bernardo O'Higgins, Santiago, Chile
- *Correspondence: Ines Moreno-Gonzalez
| | - George Edwards
- Department of Neurology, Mitchell Center for Alzheimer's Disease and Related Brain Disorders, University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Rodrigo Morales
- Department of Neurology, Mitchell Center for Alzheimer's Disease and Related Brain Disorders, University of Texas Health Science Center at Houston, Houston, TX, United States
- Centro Integrativo de Biologia y Quimica Aplicada (CIBQA), Universidad Bernardo O'Higgins, Santiago, Chile
| | - Claudia Duran-Aniotz
- Department of Neurology, Mitchell Center for Alzheimer's Disease and Related Brain Disorders, University of Texas Health Science Center at Houston, Houston, TX, United States
- Center for Social and Cognitive Neuroscience (CSCN), School of Psychology, Universidad Adolfo Ibáñez, Santiago, Chile
- Latin American Institute for Brain Health (BrainLat), Universidad Adolfo Ibanez, Santiago, Chile
| | - Gabriel Escobedo
- Department of Neurology, Mitchell Center for Alzheimer's Disease and Related Brain Disorders, University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Mercedes Marquez
- Department of Animal Medicine and Surgery, Veterinary Faculty, Animal Tissue Bank of Catalunya (BTAC), Universitat Autònoma de Barcelona, Bellaterra (Cerdanyola del Valles), Barcelona, Spain
| | - Marti Pumarola
- Department of Animal Medicine and Surgery, Veterinary Faculty, Animal Tissue Bank of Catalunya (BTAC), Universitat Autònoma de Barcelona, Bellaterra (Cerdanyola del Valles), Barcelona, Spain
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Universitat Autonoma de Barcelona, Bellaterra (Cerdanyola del Valles), Barcelona, Spain
| | - Claudio Soto
- Department of Neurology, Mitchell Center for Alzheimer's Disease and Related Brain Disorders, University of Texas Health Science Center at Houston, Houston, TX, United States
- Claudio Soto
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10
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Noh B, Blasco-Conesa MP, Lai YJ, Ganesh BP, Urayama A, Moreno-Gonzalez I, Marrelli SP, McCullough LD, Moruno-Manchon JF. G-quadruplexes Stabilization Upregulates CCN1 and Accelerates Aging in Cultured Cerebral Endothelial Cells. Front Aging 2022; 2:797562. [PMID: 35822045 PMCID: PMC9261356 DOI: 10.3389/fragi.2021.797562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 12/07/2021] [Indexed: 11/27/2022]
Abstract
Senescence in the cerebral endothelium has been proposed as a mechanism that can drive dysfunction of the cerebral vasculature, which precedes vascular dementia. Cysteine-rich angiogenic inducer 61 (Cyr61/CCN1) is a matricellular protein secreted by cerebral endothelial cells (CEC). CCN1 induces senescence in fibroblasts. However, whether CCN1 contributes to senescence in CEC and how this is regulated requires further study. Aging has been associated with the formation of four-stranded Guanine-quadruplexes (G4s) in G-rich motifs of DNA and RNA. Stabilization of the G4 structures regulates transcription and translation either by upregulation or downregulation depending on the gene target. Previously, we showed that aged mice treated with a G4-stabilizing compound had enhanced senescence-associated (SA) phenotypes in their brains, and these mice exhibited enhanced cognitive deficits. A sequence in the 3'-UTR of the human CCN1 mRNA has the ability to fold into G4s in vitro. We hypothesize that G4 stabilization regulates CCN1 in cultured primary CEC and induces endothelial senescence. We used cerebral microvessel fractions and cultured primary CEC from young (4-months old, m/o) and aged (18-m/o) mice to determine CCN1 levels. SA phenotypes were determined by high-resolution fluorescence microscopy in cultured primary CEC, and we used Thioflavin T to recognize RNA-G4s for fluorescence spectra. We found that cultured CEC from aged mice exhibited enhanced levels of SA phenotypes, and higher levels of CCN1 and G4 stabilization. In cultured CEC, CCN1 induced SA phenotypes, such as SA β-galactosidase activity, and double-strand DNA damage. Furthermore, CCN1 levels were upregulated by a G4 ligand, and a G-rich motif in the 3'-UTR of the Ccn1 mRNA was folded into a G4. In conclusion, we demonstrate that CCN1 can induce senescence in cultured primary CEC, and we provide evidence that G4 stabilization is a novel mechanism regulating the SASP component CCN1.
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Affiliation(s)
- Brian Noh
- Department of Neurology, McGovern Medical School at the University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Maria P. Blasco-Conesa
- Department of Neurology, McGovern Medical School at the University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Yun-Ju Lai
- Department of Neurology, McGovern Medical School at the University of Texas Health Science Center at Houston, Houston, TX, United States
- Solomont School of Nursing, Zuckerberg College of Health Sciences, University of Massachusetts Lowell, Lowell, MA, United States
| | - Bhanu Priya Ganesh
- Department of Neurology, McGovern Medical School at the University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Akihiko Urayama
- Department of Neurology, McGovern Medical School at the University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Ines Moreno-Gonzalez
- Department of Neurology, McGovern Medical School at the University of Texas Health Science Center at Houston, Houston, TX, United States
- Department of Cell Biology, Faculty of Sciences, Instituto de Investigacion Biomedica de Malaga-IBIMA, Malaga University, Malaga, Spain
- Networking Biomedical Research Networking Center on Neurodegenerative Diseases (CIBERNED), Madrid, Spain
| | - Sean P. Marrelli
- Department of Neurology, McGovern Medical School at the University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Louise D. McCullough
- Department of Neurology, McGovern Medical School at the University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Jose Felix Moruno-Manchon
- Department of Neurology, McGovern Medical School at the University of Texas Health Science Center at Houston, Houston, TX, United States
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11
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Finger CE, Moreno-Gonzalez I, Gutierrez A, Moruno-Manchon JF, McCullough LD. Age-related immune alterations and cerebrovascular inflammation. Mol Psychiatry 2022; 27:803-818. [PMID: 34711943 PMCID: PMC9046462 DOI: 10.1038/s41380-021-01361-1] [Citation(s) in RCA: 46] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Revised: 09/20/2021] [Accepted: 10/12/2021] [Indexed: 12/11/2022]
Abstract
Aging is associated with chronic systemic inflammation, which contributes to the development of many age-related diseases, including vascular disease. The world's population is aging, leading to an increasing prevalence of both stroke and vascular dementia. The inflammatory response to ischemic stroke is critical to both stroke pathophysiology and recovery. Age is a predictor of poor outcomes after stroke. The immune response to stroke is altered in aged individuals, which contributes to the disparate outcomes between young and aged patients. In this review, we describe the current knowledge of the effects of aging on the immune system and the cerebral vasculature and how these changes alter the immune response to stroke and vascular dementia in animal and human studies. Potential implications of these age-related immune alterations on chronic inflammation in vascular disease outcome are highlighted.
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Affiliation(s)
- Carson E. Finger
- Department of Neurology, McGovern Medical School, UTHealth Science Center at Houston, Houston, TX USA
| | - Ines Moreno-Gonzalez
- Department of Neurology, McGovern Medical School, UTHealth Science Center at Houston, Houston, TX USA ,grid.10215.370000 0001 2298 7828Department of Cell Biology, Genetics and Physiology, Instituto de Investigacion Biomedica de Malaga-IBIMA, Faculty of Sciences, Malaga University, Malaga, Spain ,grid.418264.d0000 0004 1762 4012Biomedical Research Networking Center on Neurodegenerative Diseases (CIBERNED), Malaga, Spain
| | - Antonia Gutierrez
- grid.10215.370000 0001 2298 7828Department of Cell Biology, Genetics and Physiology, Instituto de Investigacion Biomedica de Malaga-IBIMA, Faculty of Sciences, Malaga University, Malaga, Spain ,grid.418264.d0000 0004 1762 4012Biomedical Research Networking Center on Neurodegenerative Diseases (CIBERNED), Malaga, Spain
| | - Jose Felix Moruno-Manchon
- Department of Neurology, McGovern Medical School, UTHealth Science Center at Houston, Houston, TX USA
| | - Louise D. McCullough
- Department of Neurology, McGovern Medical School, UTHealth Science Center at Houston, Houston, TX USA
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12
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Sanchez-Varo R, Sanchez-Mejias E, Fernandez-Valenzuela JJ, De Castro V, Mejias-Ortega M, Gomez-Arboledas A, Jimenez S, Sanchez-Mico MV, Trujillo-Estrada L, Moreno-Gonzalez I, Baglietto-Vargas D, Vizuete M, Davila JC, Vitorica J, Gutierrez A. Plaque-Associated Oligomeric Amyloid-Beta Drives Early Synaptotoxicity in APP/PS1 Mice Hippocampus: Ultrastructural Pathology Analysis. Front Neurosci 2021; 15:752594. [PMID: 34803589 PMCID: PMC8600261 DOI: 10.3389/fnins.2021.752594] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 10/04/2021] [Indexed: 01/14/2023] Open
Abstract
Alzheimer’s disease (AD) is a devastating neurodegenerative disorder characterized by initial memory impairments that progress to dementia. In this sense, synaptic dysfunction and loss have been established as the pathological features that best correlate with the typical early cognitive decline in this disease. At the histopathological level, post mortem AD brains typically exhibit intraneuronal neurofibrillary tangles (NFTs) along with the accumulation of amyloid-beta (Abeta) peptides in the form of extracellular deposits. Specifically, the oligomeric soluble forms of Abeta are considered the most synaptotoxic species. In addition, neuritic plaques are Abeta deposits surrounded by activated microglia and astroglia cells together with abnormal swellings of neuronal processes named dystrophic neurites. These periplaque aberrant neurites are mostly presynaptic elements and represent the first pathological indicator of synaptic dysfunction. In terms of losing synaptic proteins, the hippocampus is one of the brain regions most affected in AD patients. In this work, we report an early decline in spatial memory, along with hippocampal synaptic changes, in an amyloidogenic APP/PS1 transgenic model. Quantitative electron microscopy revealed a spatial synaptotoxic pattern around neuritic plaques with significant loss of periplaque synaptic terminals, showing rising synapse loss close to the border, especially in larger plaques. Moreover, dystrophic presynapses were filled with autophagic vesicles in detriment of the presynaptic vesicular density, probably interfering with synaptic function at very early synaptopathological disease stages. Electron immunogold labeling showed that the periphery of amyloid plaques, and the associated dystrophic neurites, was enriched in Abeta oligomers supporting an extracellular location of the synaptotoxins. Finally, the incubation of primary neurons with soluble fractions derived from 6-month-old APP/PS1 hippocampus induced significant loss of synaptic proteins, but not neuronal death. Indeed, this preclinical transgenic model could serve to investigate therapies targeted at initial stages of synaptic dysfunction relevant to the prodromal and early AD.
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Affiliation(s)
- Raquel Sanchez-Varo
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain.,Centro de Investigación Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain.,Departamento Fisiologia Humana, Histologia Humana, Anatomia Patologica y Educacion Fisica y Deportiva, Facultad de Medicina, Universidad de Málaga, Málaga, Spain
| | - Elisabeth Sanchez-Mejias
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain.,Centro de Investigación Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Juan Jose Fernandez-Valenzuela
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain.,Centro de Investigación Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Vanessa De Castro
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain
| | - Marina Mejias-Ortega
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain.,Centro de Investigación Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Angela Gomez-Arboledas
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain.,Centro de Investigación Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Sebastian Jimenez
- Centro de Investigación Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain.,Departamento Bioquimica y Biologia Molecular, Facultad de Farmacia, Universidad de Sevilla, Seville, Spain.,Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocio CSIC/Universidad de Sevilla, Seville, Spain
| | - Maria Virtudes Sanchez-Mico
- Centro de Investigación Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain.,Departamento Bioquimica y Biologia Molecular, Facultad de Farmacia, Universidad de Sevilla, Seville, Spain.,Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocio CSIC/Universidad de Sevilla, Seville, Spain
| | - Laura Trujillo-Estrada
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain.,Centro de Investigación Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Ines Moreno-Gonzalez
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain.,Centro de Investigación Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain.,Department of Neurology, McGovern Medical School, UTHealth Science Center at Houston, Houston, TX, United States
| | - David Baglietto-Vargas
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain.,Centro de Investigación Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Marisa Vizuete
- Centro de Investigación Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain.,Departamento Bioquimica y Biologia Molecular, Facultad de Farmacia, Universidad de Sevilla, Seville, Spain.,Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocio CSIC/Universidad de Sevilla, Seville, Spain
| | - Jose Carlos Davila
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain.,Centro de Investigación Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Javier Vitorica
- Centro de Investigación Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain.,Departamento Bioquimica y Biologia Molecular, Facultad de Farmacia, Universidad de Sevilla, Seville, Spain.,Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocio CSIC/Universidad de Sevilla, Seville, Spain
| | - Antonia Gutierrez
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain.,Centro de Investigación Biomedica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
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13
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de Oliveira J, Kucharska E, Garcez ML, Rodrigues MS, Quevedo J, Moreno-Gonzalez I, Budni J. Inflammatory Cascade in Alzheimer's Disease Pathogenesis: A Review of Experimental Findings. Cells 2021; 10:cells10102581. [PMID: 34685563 PMCID: PMC8533897 DOI: 10.3390/cells10102581] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 09/13/2021] [Accepted: 09/16/2021] [Indexed: 12/14/2022] Open
Abstract
Alzheimer’s disease (AD) is the leading cause of dementia worldwide. Most AD patients develop the disease in late life, named late onset AD (LOAD). Currently, the most recognized explanation for AD pathology is the amyloid cascade hypothesis. It is assumed that amyloid beta (Aβ) aggregation and deposition are critical pathogenic processes in AD, leading to the formation of amyloid plaques, as well as neurofibrillary tangles, neuronal cell death, synaptic degeneration, and dementia. In LOAD, the causes of Aβ accumulation and neuronal loss are not completely clear. Importantly, the blood–brain barrier (BBB) disruption seems to present an essential role in the induction of neuroinflammation and consequent AD development. In addition, we propose that the systemic inflammation triggered by conditions like metabolic diseases or infections are causative factors of BBB disruption, coexistent inflammatory cascade and, ultimately, the neurodegeneration observed in AD. In this regard, the use of anti-inflammatory molecules could be an interesting strategy to treat, delay or even halt AD onset and progression. Herein, we review the inflammatory cascade and underlying mechanisms involved in AD pathogenesis and revise the anti-inflammatory effects of compounds as emerging therapeutic drugs against AD.
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Affiliation(s)
- Jade de Oliveira
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre 90050-000, Brazil; (J.d.O.); (M.S.R.)
| | - Ewa Kucharska
- Faculty of Education, Institute of Educational Sciences, Jesuit University Ignatianum in Krakow, 31-501 Krakow, Poland;
| | - Michelle Lima Garcez
- Department of Biochemistry, Federal University of Santa Catarina, Florianópolis 88040-900, Santa Catarina, Brazil;
| | - Matheus Scarpatto Rodrigues
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre 90050-000, Brazil; (J.d.O.); (M.S.R.)
| | - João Quevedo
- Translational Psychiatry Program, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX 77030, USA;
- Center of Excellence on Mood Disorders, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX 77030, USA
- Neuroscience Graduate Program, Graduate School of Biomedical Sciences, MD Anderson Cancer Center, UTHealth, The University of Texas Houston, Houston, TX 77030, USA
- Graduate Program in Health Sciences, Translational Psychiatry Laboratory, University of Southern Santa Catarina (UNESC), Criciuma 88806-000, Brazil
| | - Ines Moreno-Gonzalez
- Department of Cell Biology, Faculty of Sciences, University of Malaga, IBIMA, 29010 Malaga, Spain;
- Networking Research Center on Neurodegenerative Diseases (CIBERNED), 29010 Malaga, Spain
- Department of Neurology, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX 77030, USA
| | - Josiane Budni
- Programa de Pós-Graduação em Ciências da Saúde, Laboratório de Neurologia Experimental, Universidade do Extremo Sul Catarinense, Criciuma 88806-000, Brazil
- Correspondence: ; Tel.: +55-48431-2539
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14
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Baglietto-Vargas D, Forner S, Cai L, Martini AC, Trujillo-Estrada L, Swarup V, Nguyen MMT, Do Huynh K, Javonillo DI, Tran KM, Phan J, Jiang S, Kramár EA, Nuñez-Diaz C, Balderrama-Gutierrez G, Garcia F, Childs J, Rodriguez-Ortiz CJ, Garcia-Leon JA, Kitazawa M, Shahnawaz M, Matheos DP, Ma X, Da Cunha C, Walls KC, Ager RR, Soto C, Gutierrez A, Moreno-Gonzalez I, Mortazavi A, Tenner AJ, MacGregor GR, Wood M, Green KN, LaFerla FM. Generation of a humanized Aβ expressing mouse demonstrating aspects of Alzheimer's disease-like pathology. Nat Commun 2021; 12:2421. [PMID: 33893290 PMCID: PMC8065162 DOI: 10.1038/s41467-021-22624-z] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Accepted: 03/15/2021] [Indexed: 11/26/2022] Open
Abstract
The majority of Alzheimer's disease (AD) cases are late-onset and occur sporadically, however most mouse models of the disease harbor pathogenic mutations, rendering them better representations of familial autosomal-dominant forms of the disease. Here, we generated knock-in mice that express wildtype human Aβ under control of the mouse App locus. Remarkably, changing 3 amino acids in the mouse Aβ sequence to its wild-type human counterpart leads to age-dependent impairments in cognition and synaptic plasticity, brain volumetric changes, inflammatory alterations, the appearance of Periodic Acid-Schiff (PAS) granules and changes in gene expression. In addition, when exon 14 encoding the Aβ sequence was flanked by loxP sites we show that Cre-mediated excision of exon 14 ablates hAβ expression, rescues cognition and reduces the formation of PAS granules.
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Affiliation(s)
- David Baglietto-Vargas
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA, USA
- Department of Neurobiology and Behavior, University of California, Irvine, CA, USA
- Department of Cell Biology, Genetic and Physiology, Faculty of Sciences, Instituto de Investigacion Biomedica de Malaga-IBIMA, Networking Research Center on Neurodegenerative Diseases (CIBERNED), University of Malaga, Malaga, Spain
| | - Stefania Forner
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA, USA
| | - Lena Cai
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA, USA
| | - Alessandra C Martini
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA, USA
| | - Laura Trujillo-Estrada
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA, USA
- Department of Cell Biology, Genetic and Physiology, Faculty of Sciences, Instituto de Investigacion Biomedica de Malaga-IBIMA, Networking Research Center on Neurodegenerative Diseases (CIBERNED), University of Malaga, Malaga, Spain
| | - Vivek Swarup
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA, USA
- Department of Neurobiology and Behavior, University of California, Irvine, CA, USA
| | - Marie Minh Thu Nguyen
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA, USA
| | - Kelly Do Huynh
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA, USA
| | - Dominic I Javonillo
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA, USA
| | - Kristine Minh Tran
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA, USA
| | - Jimmy Phan
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA, USA
| | - Shan Jiang
- Department of Developmental and Cell Biology, University of California, Irvine, CA, USA
| | - Enikö A Kramár
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA, USA
- Department of Neurobiology and Behavior, University of California, Irvine, CA, USA
| | - Cristina Nuñez-Diaz
- Department of Cell Biology, Genetic and Physiology, Faculty of Sciences, Instituto de Investigacion Biomedica de Malaga-IBIMA, Networking Research Center on Neurodegenerative Diseases (CIBERNED), University of Malaga, Malaga, Spain
| | | | - Franklin Garcia
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA, USA
- Department of Neurobiology and Behavior, University of California, Irvine, CA, USA
| | - Jessica Childs
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA, USA
- Department of Neurobiology and Behavior, University of California, Irvine, CA, USA
| | - Carlos J Rodriguez-Ortiz
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA, USA
- Division of Occupational and Environmental Medicine, Department of Medicine. Center for Occupational and Environmental Health (COEH), University of California, Irvine, CA, USA
| | - Juan Antonio Garcia-Leon
- Department of Cell Biology, Genetic and Physiology, Faculty of Sciences, Instituto de Investigacion Biomedica de Malaga-IBIMA, Networking Research Center on Neurodegenerative Diseases (CIBERNED), University of Malaga, Malaga, Spain
| | - Masashi Kitazawa
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA, USA
- Division of Occupational and Environmental Medicine, Department of Medicine. Center for Occupational and Environmental Health (COEH), University of California, Irvine, CA, USA
| | - Mohammad Shahnawaz
- The Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Dina P Matheos
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA, USA
- Department of Neurobiology and Behavior, University of California, Irvine, CA, USA
| | - Xinyi Ma
- Department of Developmental and Cell Biology, University of California, Irvine, CA, USA
| | - Celia Da Cunha
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA, USA
| | - Ken C Walls
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA, USA
| | - Rahasson R Ager
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA, USA
| | - Claudio Soto
- The Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Antonia Gutierrez
- Department of Cell Biology, Genetic and Physiology, Faculty of Sciences, Instituto de Investigacion Biomedica de Malaga-IBIMA, Networking Research Center on Neurodegenerative Diseases (CIBERNED), University of Malaga, Malaga, Spain
| | - Ines Moreno-Gonzalez
- Department of Cell Biology, Genetic and Physiology, Faculty of Sciences, Instituto de Investigacion Biomedica de Malaga-IBIMA, Networking Research Center on Neurodegenerative Diseases (CIBERNED), University of Malaga, Malaga, Spain
- The Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Ali Mortazavi
- Department of Developmental and Cell Biology, University of California, Irvine, CA, USA
| | - Andrea J Tenner
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA, USA
- Department of Neurobiology and Behavior, University of California, Irvine, CA, USA
- Department of Molecular Biology and Biochemistry, University of California, Irvine, CA, USA
| | - Grant R MacGregor
- Department of Developmental and Cell Biology, University of California, Irvine, CA, USA
| | - Marcelo Wood
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA, USA
- Department of Neurobiology and Behavior, University of California, Irvine, CA, USA
| | - Kim N Green
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA, USA.
- Department of Neurobiology and Behavior, University of California, Irvine, CA, USA.
| | - Frank M LaFerla
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA, USA.
- Department of Neurobiology and Behavior, University of California, Irvine, CA, USA.
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15
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Duran-Aniotz C, Moreno-Gonzalez I, Gamez N, Perez-Urrutia N, Vegas-Gomez L, Soto C, Morales R. Amyloid pathology arrangements in Alzheimer's disease brains modulate in vivo seeding capability. Acta Neuropathol Commun 2021; 9:56. [PMID: 33785065 PMCID: PMC8008576 DOI: 10.1186/s40478-021-01155-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Accepted: 03/14/2021] [Indexed: 12/23/2022] Open
Abstract
Amyloid-β (Aβ) misfolding is one of the hallmark pathological features of Alzheimer's disease (AD). AD can manifest with diverse symptomatology including variable rates of cognitive decline, duration of clinical disease, and other detrimental changes. Several reports suggest that conformational diversity in misfolded Aβ is a leading factor for clinical variability in AD, analogous to what it has been described for prion strains in prion diseases. Notably, prion strains generate diverse patterns of misfolded protein deposition in the brains of affected individuals. Here, we tested the in vivo prion-like transmission features of four AD brains displaying particular patterns of amyloidosis. AD brains induced different phenotypes in recipient mice, as evaluated by their specific seeding activity, as well as the total amount of Aβ deposited surrounding vascular structures and the reactivity of amyloid pathology to thioflavin S. Our results support the notion that AD-subtypes are encoded in disease-associated Aβ. Further research exploring whether AD include a spectrum of different clinical conditions or syndromes may pave the way to personalized diagnosis and treatments.
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Affiliation(s)
- Claudia Duran-Aniotz
- Department of Neurology, The University of Texas Health Science Center at Houston, 6431 Fannin, St. Houston, TX, 77030, USA
- Center for Social and Cognitive Neuroscience (CSCN), School of Psychology, Universidad Adolfo Ibanez, Santiago, Chile
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibanez, Santiago, Chile
- Universidad de los Andes, Facultad de Medicina, Av. San Carlos de Apoquindo, 2200, Las Condes, Santiago, Chile
| | - Ines Moreno-Gonzalez
- Department of Neurology, The University of Texas Health Science Center at Houston, 6431 Fannin, St. Houston, TX, 77030, USA
- Department of Cell Biology, Faculty of Sciences, University of Malaga-IBIMA, 29010, Malaga, Spain
- Networking Research Center On Neurodegenerative Diseases (CIBERNED), Madrid, Spain
- Centro Integrativo de Biologia Y Quimica Aplicada (CIBQA), Universidad Bernardo O'Higgins, Santiago, Chile
| | - Nazaret Gamez
- Department of Neurology, The University of Texas Health Science Center at Houston, 6431 Fannin, St. Houston, TX, 77030, USA
- Department of Cell Biology, Faculty of Sciences, University of Malaga-IBIMA, 29010, Malaga, Spain
| | - Nelson Perez-Urrutia
- Department of Neurology, The University of Texas Health Science Center at Houston, 6431 Fannin, St. Houston, TX, 77030, USA
| | - Laura Vegas-Gomez
- Department of Cell Biology, Faculty of Sciences, University of Malaga-IBIMA, 29010, Malaga, Spain
| | - Claudio Soto
- Department of Neurology, The University of Texas Health Science Center at Houston, 6431 Fannin, St. Houston, TX, 77030, USA
- Universidad de los Andes, Facultad de Medicina, Av. San Carlos de Apoquindo, 2200, Las Condes, Santiago, Chile
| | - Rodrigo Morales
- Department of Neurology, The University of Texas Health Science Center at Houston, 6431 Fannin, St. Houston, TX, 77030, USA.
- Centro Integrativo de Biologia Y Quimica Aplicada (CIBQA), Universidad Bernardo O'Higgins, Santiago, Chile.
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16
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Trujillo-Estrada L, Sanchez-Mejias E, Sanchez-Varo R, Garcia-Leon JA, Nuñez-Diaz C, Davila JC, Vitorica J, LaFerla FM, Moreno-Gonzalez I, Gutierrez A, Baglietto-Vargas D. Animal and Cellular Models of Alzheimer's Disease: Progress, Promise, and Future Approaches. Neuroscientist 2021; 28:572-593. [PMID: 33769131 DOI: 10.1177/10738584211001753] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Alzheimer's disease (AD) is an incurable neurodegenerative disease affecting over 45 million people worldwide. Transgenic mouse models have made remarkable contributions toward clarifying the pathophysiological mechanisms behind the clinical manifestations of AD. However, the limited ability of these in vivo models to accurately replicate the biology of the human disease have precluded the translation of promising preclinical therapies to the clinic. In this review, we highlight several major pathogenic mechanisms of AD that were discovered using transgenic mouse models. Moreover, we discuss the shortcomings of current animal models and the need to develop reliable models for the sporadic form of the disease, which accounts for the majority of AD cases, as well as human cellular models to improve success in translating results into human treatments.
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Affiliation(s)
- Laura Trujillo-Estrada
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, Malaga, Spain.,Centro de Investigacion Biomedica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Elisabeth Sanchez-Mejias
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, Malaga, Spain.,Centro de Investigacion Biomedica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Raquel Sanchez-Varo
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, Malaga, Spain.,Centro de Investigacion Biomedica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Juan Antonio Garcia-Leon
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, Malaga, Spain.,Centro de Investigacion Biomedica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Cristina Nuñez-Diaz
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, Malaga, Spain.,Centro de Investigacion Biomedica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Jose Carlos Davila
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, Malaga, Spain.,Centro de Investigacion Biomedica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Javier Vitorica
- Centro de Investigacion Biomedica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain.,Departamento Bioquimica y Biologia Molecular, Facultad de Farmacia, Universidad de Sevilla, Instituto de Biomedicina de Sevilla (IBiS)-Hospital Universitario Virgen del Rocio/CSIC/Universidad de Sevilla, Sevilla, Spain
| | - Frank M LaFerla
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine, CA, USA.,Department of Neurobiology and Behavior, University of California, Irvine, CA, USA
| | - Ines Moreno-Gonzalez
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, Malaga, Spain.,Centro de Investigacion Biomedica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Antonia Gutierrez
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, Malaga, Spain.,Centro de Investigacion Biomedica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - David Baglietto-Vargas
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, Malaga, Spain.,Centro de Investigacion Biomedica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
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17
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Kwon S, Moreno-Gonzalez I, Taylor-Presse K, Edwards Iii G, Gamez N, Calderon O, Zhu B, Velasquez FC, Soto C, Sevick-Muraca EM. Impaired Peripheral Lymphatic Function and Cerebrospinal Fluid Outflow in a Mouse Model of Alzheimer's Disease. J Alzheimers Dis 2020; 69:585-593. [PMID: 31104026 DOI: 10.3233/jad-190013] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Cerebrospinal fluid (CSF) outflow from the brain occurs through absorption into the arachnoid villi and, more predominantly, through meningeal and olfactory lymphatics that ultimately drain into the peripheral lymphatics. Impaired CSF outflow has been postulated as a contributing mechanism in Alzheimer's disease (AD). Herein we conducted near-infrared fluorescence imaging of CSF outflow into the peripheral lymph nodes (LNs) and of peripheral lymphatic function in a transgenic mouse model of AD (5XFAD) and wild-type (WT) littermates. CSF outflow was assessed from change in fluorescence intensity in the submandibular LNs as a function of time following bolus, an intrathecal injection of indocyanine green (ICG). Peripheral lymphatic function was measured by assessing lymphangion contractile function in lymphatics draining into the popliteal LN following intradermal ICG injection in the dorsal aspect of the hind paw. The results show 1) significantly impaired CSF outflow into the submandibular LNs of 5XFAD mice and 2) reduced contractile frequency in the peripheral lymphatics as compared to WT mice. Impaired CSF clearance was also evidenced by reduction of fluorescence on ventral surfaces of extracted brains of 5XFAD mice at euthanasia. These results support the hypothesis that lymphatic congestion caused by reduced peripheral lymphatic function could limit CSF outflow and may contribute to the cause and/or progression of AD.
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Affiliation(s)
- Sunkuk Kwon
- Center for Molecular Imaging, The Brown Foundation Institute of Molecular Medicine, Houston, TX, USA
| | - Ines Moreno-Gonzalez
- Mitchell Center for Alzheimer's disease and Related Brain Disorders, Department of Neurology, The University of Texas Health Science Center, Houston, TX, USA
| | - Kathleen Taylor-Presse
- Mitchell Center for Alzheimer's disease and Related Brain Disorders, Department of Neurology, The University of Texas Health Science Center, Houston, TX, USA
| | - George Edwards Iii
- Mitchell Center for Alzheimer's disease and Related Brain Disorders, Department of Neurology, The University of Texas Health Science Center, Houston, TX, USA
| | - Nazaret Gamez
- Mitchell Center for Alzheimer's disease and Related Brain Disorders, Department of Neurology, The University of Texas Health Science Center, Houston, TX, USA
| | - Olivia Calderon
- Mitchell Center for Alzheimer's disease and Related Brain Disorders, Department of Neurology, The University of Texas Health Science Center, Houston, TX, USA
| | - Banghe Zhu
- Center for Molecular Imaging, The Brown Foundation Institute of Molecular Medicine, Houston, TX, USA
| | - Fred Christian Velasquez
- Center for Molecular Imaging, The Brown Foundation Institute of Molecular Medicine, Houston, TX, USA
| | - Claudio Soto
- Mitchell Center for Alzheimer's disease and Related Brain Disorders, Department of Neurology, The University of Texas Health Science Center, Houston, TX, USA
| | - Eva M Sevick-Muraca
- Center for Molecular Imaging, The Brown Foundation Institute of Molecular Medicine, Houston, TX, USA
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18
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Fernandez-Valenzuela JJ, Sanchez-Varo R, Muñoz-Castro C, De Castro V, Sanchez-Mejias E, Navarro V, Jimenez S, Nuñez-Diaz C, Gomez-Arboledas A, Moreno-Gonzalez I, Vizuete M, Davila JC, Vitorica J, Gutierrez A. Enhancing microtubule stabilization rescues cognitive deficits and ameliorates pathological phenotype in an amyloidogenic Alzheimer's disease model. Sci Rep 2020; 10:14776. [PMID: 32901091 PMCID: PMC7479116 DOI: 10.1038/s41598-020-71767-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 08/18/2020] [Indexed: 01/10/2023] Open
Abstract
In Alzheimer's disease (AD), and other tauopathies, microtubule destabilization compromises axonal and synaptic integrity contributing to neurodegeneration. These diseases are characterized by the intracellular accumulation of hyperphosphorylated tau leading to neurofibrillary pathology. AD brains also accumulate amyloid-beta (Aβ) deposits. However, the effect of microtubule stabilizing agents on Aβ pathology has not been assessed so far. Here we have evaluated the impact of the brain-penetrant microtubule-stabilizing agent Epothilone D (EpoD) in an amyloidogenic model of AD. Three-month-old APP/PS1 mice, before the pathology onset, were weekly injected with EpoD for 3 months. Treated mice showed significant decrease in the phospho-tau levels and, more interesting, in the intracellular and extracellular hippocampal Aβ accumulation, including the soluble oligomeric forms. Moreover, a significant cognitive improvement and amelioration of the synaptic and neuritic pathology was found. Remarkably, EpoD exerted a neuroprotective effect on SOM-interneurons, a highly AD-vulnerable GABAergic subpopulation. Therefore, our results suggested that EpoD improved microtubule dynamics and axonal transport in an AD-like context, reducing tau and Aβ levels and promoting neuronal and cognitive protection. These results underline the existence of a crosstalk between cytoskeleton pathology and the two major AD protein lesions. Therefore, microtubule stabilizers could be considered therapeutic agents to slow the progression of both tau and Aβ pathology.
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Affiliation(s)
- Juan Jose Fernandez-Valenzuela
- Dpto. Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29071, Málaga, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Raquel Sanchez-Varo
- Dpto. Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29071, Málaga, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Clara Muñoz-Castro
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain.,Dpto. Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad de Sevilla, C/Prof. Garcia Gonzalez 2, 41012, Sevilla, Spain.,Instituto de Biomedicina de Sevilla (IBIS), Hospital Universitario Virgen del Rocio/CSIC, Universidad de Sevilla, Sevilla, Spain
| | - Vanessa De Castro
- Dpto. Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29071, Málaga, Spain
| | - Elisabeth Sanchez-Mejias
- Dpto. Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29071, Málaga, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Victoria Navarro
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain.,Dpto. Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad de Sevilla, C/Prof. Garcia Gonzalez 2, 41012, Sevilla, Spain.,Instituto de Biomedicina de Sevilla (IBIS), Hospital Universitario Virgen del Rocio/CSIC, Universidad de Sevilla, Sevilla, Spain
| | - Sebastian Jimenez
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain.,Dpto. Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad de Sevilla, C/Prof. Garcia Gonzalez 2, 41012, Sevilla, Spain.,Instituto de Biomedicina de Sevilla (IBIS), Hospital Universitario Virgen del Rocio/CSIC, Universidad de Sevilla, Sevilla, Spain
| | - Cristina Nuñez-Diaz
- Dpto. Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29071, Málaga, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Angela Gomez-Arboledas
- Dpto. Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29071, Málaga, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Ines Moreno-Gonzalez
- Dpto. Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29071, Málaga, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Marisa Vizuete
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain.,Dpto. Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad de Sevilla, C/Prof. Garcia Gonzalez 2, 41012, Sevilla, Spain.,Instituto de Biomedicina de Sevilla (IBIS), Hospital Universitario Virgen del Rocio/CSIC, Universidad de Sevilla, Sevilla, Spain
| | - Jose Carlos Davila
- Dpto. Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29071, Málaga, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Javier Vitorica
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain. .,Dpto. Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad de Sevilla, C/Prof. Garcia Gonzalez 2, 41012, Sevilla, Spain. .,Instituto de Biomedicina de Sevilla (IBIS), Hospital Universitario Virgen del Rocio/CSIC, Universidad de Sevilla, Sevilla, Spain.
| | - Antonia Gutierrez
- Dpto. Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29071, Málaga, Spain. .,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain.
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19
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Moreno-Gonzalez I, Morales R, Baglietto-Vargas D, Sanchez-Varo R. Editorial: Risk Factors for Alzheimer's Disease. Front Aging Neurosci 2020; 12:124. [PMID: 32457597 PMCID: PMC7221022 DOI: 10.3389/fnagi.2020.00124] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 04/14/2020] [Indexed: 12/02/2022] Open
Affiliation(s)
- Ines Moreno-Gonzalez
- Departamento Biologia Celular, Genetica y Fisiologia, Facultad de Ciencias, Instituto de Investigacion Biomedica de Malaga-IBIMA, Universidad de Malaga, Málaga, Spain.,Networking Research Center on Neurodegenerative Diseases (CIBERNED), Madrid, Spain.,Department of Neurology, The University of Texas Health Science Center at Houston, Houston, TX, United States.,Centro Integrativo de Biología y Química Aplicada (CIBQA), Universidad Bernardo O'Higgins, Santiago, Chile
| | - Rodrigo Morales
- Department of Neurology, The University of Texas Health Science Center at Houston, Houston, TX, United States.,Centro Integrativo de Biología y Química Aplicada (CIBQA), Universidad Bernardo O'Higgins, Santiago, Chile
| | - David Baglietto-Vargas
- Departamento Biologia Celular, Genetica y Fisiologia, Facultad de Ciencias, Instituto de Investigacion Biomedica de Malaga-IBIMA, Universidad de Malaga, Málaga, Spain.,Networking Research Center on Neurodegenerative Diseases (CIBERNED), Madrid, Spain
| | - Raquel Sanchez-Varo
- Departamento Biologia Celular, Genetica y Fisiologia, Facultad de Ciencias, Instituto de Investigacion Biomedica de Malaga-IBIMA, Universidad de Malaga, Málaga, Spain.,Networking Research Center on Neurodegenerative Diseases (CIBERNED), Madrid, Spain
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20
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Edwards Iii G, Gamez N, Armijo E, Kramm C, Morales R, Taylor-Presse K, Schulz PE, Soto C, Moreno-Gonzalez I. Peripheral Delivery of Neural Precursor Cells Ameliorates Parkinson's Disease-Associated Pathology. Cells 2019; 8:cells8111359. [PMID: 31671704 PMCID: PMC6912680 DOI: 10.3390/cells8111359] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Revised: 10/18/2019] [Accepted: 10/28/2019] [Indexed: 12/31/2022] Open
Abstract
: Parkinson's disease (PD) is a progressive neurodegenerative disorder characterized by loss of motor control due to a wide loss of dopaminergic neurons along the nigro-striatal pathway. Some of the mechanisms that contribute to this cell death are inflammation, oxidative stress, and misfolded alpha-synuclein-induced toxicity. Current treatments are effective at managing the early motor symptoms of the disease, but they become ineffective over time and lead to adverse effects. Previous research using intracerebral stem cell therapy for treatment of PD has provided promising results; however, this method is very invasive and is often associated with unacceptable side effects. In this study, we used an MPTP-injected mouse model of PD and intravenously administered neural precursors (NPs) obtained from mouse embryonic and mesenchymal stem cells. Clinical signs and neuropathology were assessed. Female mice treated with NPs had improved motor function and reduction in the neuroinflammatory response. In terms of safety, there were no tumorigenic formations or any detectable adverse effect after treatment. Our results suggest that peripheral administration of stem cell-derived NPs may be a promising and safe therapy for the recovery of impaired motor function and amelioration of brain pathology in PD.
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Affiliation(s)
- George Edwards Iii
- The Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, The University of Texas Houston Health Science Center at Houston, Houston, TX 77030, USA.
| | - Nazaret Gamez
- The Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, The University of Texas Houston Health Science Center at Houston, Houston, TX 77030, USA.
- Dpto. Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, 29010 Malaga, Spain.
| | - Enrique Armijo
- The Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, The University of Texas Houston Health Science Center at Houston, Houston, TX 77030, USA.
| | - Carlos Kramm
- The Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, The University of Texas Houston Health Science Center at Houston, Houston, TX 77030, USA.
| | - Rodrigo Morales
- The Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, The University of Texas Houston Health Science Center at Houston, Houston, TX 77030, USA.
- Centro Integrativo de Biología y Química Aplicada (CIBQA), Universidad Bernardo O'Higgins, Santiago 8370993, Chile.
| | - Kathleen Taylor-Presse
- The Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, The University of Texas Houston Health Science Center at Houston, Houston, TX 77030, USA.
| | - Paul E Schulz
- The Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, The University of Texas Houston Health Science Center at Houston, Houston, TX 77030, USA.
| | - Claudio Soto
- The Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, The University of Texas Houston Health Science Center at Houston, Houston, TX 77030, USA.
| | - Ines Moreno-Gonzalez
- The Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, The University of Texas Houston Health Science Center at Houston, Houston, TX 77030, USA.
- Dpto. Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, 29010 Malaga, Spain.
- Centro Integrativo de Biología y Química Aplicada (CIBQA), Universidad Bernardo O'Higgins, Santiago 8370993, Chile.
- Networking Research Center on Neurodegenerative Diseases (CIBERNED), 29010 Malaga, Spain.
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21
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Sanchez-Mejias E, Nuñez-Diaz C, Sanchez-Varo R, Gomez-Arboledas A, Garcia-Leon JA, Fernandez-Valenzuela JJ, Mejias-Ortega M, Trujillo-Estrada L, Baglietto-Vargas D, Moreno-Gonzalez I, Davila JC, Vitorica J, Gutierrez A. Distinct disease-sensitive GABAergic neurons in the perirhinal cortex of Alzheimer's mice and patients. Brain Pathol 2019; 30:345-363. [PMID: 31491047 PMCID: PMC7064898 DOI: 10.1111/bpa.12785] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Accepted: 09/02/2019] [Indexed: 12/29/2022] Open
Abstract
Neuronal loss is the best neuropathological substrate that correlates with cortical atrophy and dementia in Alzheimer's disease (AD). Defective GABAergic neuronal functions may lead to cortical network hyperactivity and aberrant neuronal oscillations and in consequence, generate a detrimental alteration in memory processes. In this study, using immunohistochemical and stereological approaches, we report that the two major and non-overlapping groups of inhibitory interneurons (SOM-cells and PV-cells) displayed distinct vulnerability in the perirhinal cortex of APP/PS1 mice and AD patients. SOM-positive neurons were notably sensitive and exhibited a dramatic decrease in the perirhinal cortex of 6-month-old transgenic mice (57% and 61% in areas 36 and 35, respectively) and, most importantly, in AD patients (91% in Braak V-VI cases). In addition, this interneuron degenerative process seems to occur in parallel, and closely related, with the progression of the amyloid pathology. However, the population expressing PV was unaffected in APP/PS1 mice while in AD brains suffered a pronounced and significant loss (69%). As a key component of cortico-hippocampal networks, the perirhinal cortex plays an important role in memory processes, especially in familiarity-based memory recognition. Therefore, disrupted functional connectivity of this cortical region, as a result of the early SOM and PV neurodegeneration, might contribute to the altered brain rhythms and cognitive failures observed in the initial clinical phase of AD patients. Finally, these findings highlight the failure of amyloidogenic AD models to fully recapitulate the selective neuronal degeneration occurring in humans.
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Affiliation(s)
- Elisabeth Sanchez-Mejias
- Dpto. Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Cristina Nuñez-Diaz
- Dpto. Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Raquel Sanchez-Varo
- Dpto. Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Angela Gomez-Arboledas
- Dpto. Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Juan Antonio Garcia-Leon
- Dpto. Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Juan Jose Fernandez-Valenzuela
- Dpto. Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Marina Mejias-Ortega
- Dpto. Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Laura Trujillo-Estrada
- Dpto. Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - David Baglietto-Vargas
- Dpto. Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Ines Moreno-Gonzalez
- Dpto. Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Jose Carlos Davila
- Dpto. Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Javier Vitorica
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain.,Dpto. Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad de Sevilla, Sevilla, Spain.,Instituto de Biomedicina de Sevilla (IBIS)-Hospital Universitario Virgen del Rocio/CSIC/Universidad de Sevilla, Sevilla, Spain
| | - Antonia Gutierrez
- Dpto. Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga-IBIMA, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain.,Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
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22
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Cuanalo-Contreras K, Moreno-Gonzalez I. Natural Products as Modulators of the Proteostasis Machinery: Implications in Neurodegenerative Diseases. Int J Mol Sci 2019; 20:ijms20194666. [PMID: 31547084 PMCID: PMC6801507 DOI: 10.3390/ijms20194666] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 09/13/2019] [Accepted: 09/15/2019] [Indexed: 02/07/2023] Open
Abstract
Proteins play crucial and diverse roles within the cell. To exert their biological function they must fold to acquire an appropriate three-dimensional conformation. Once their function is fulfilled, they need to be properly degraded to hamper any possible damage. Protein homeostasis or proteostasis comprises a complex interconnected network that regulates different steps of the protein quality control, from synthesis and folding, to degradation. Due to the primary role of proteins in cellular function, the integrity of this network is critical to assure functionality and health across lifespan. Proteostasis failure has been reported in the context of aging and neurodegeneration, such as Alzheimer’s and Parkinson’s disease. Therefore, targeting the proteostasis elements emerges as a promising neuroprotective therapeutic approach to prevent or ameliorate the progression of these disorders. A variety of natural products are known to be neuroprotective by protein homeostasis interaction. In this review, we will focus on the current knowledge regarding the use of natural products as modulators of different components of the proteostasis machinery within the framework of age-associated neurodegenerative diseases.
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Affiliation(s)
- Karina Cuanalo-Contreras
- The Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, The University of Texas Houston Health Science Center at Houston, Houston, TX 77030, USA.
| | - Ines Moreno-Gonzalez
- The Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, The University of Texas Houston Health Science Center at Houston, Houston, TX 77030, USA.
- Departamento Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias, Universidad de Malaga, 28031 Madrid, Spain.
- Networking Research Center on Neurodegenerative Diseases (CIBERNED), 28031 Madrid, Spain.
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23
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Jiang B, Aliyan A, Cook NP, Augustine A, Bhak G, Maldonado R, Smith McWilliams AD, Flores EM, Mendez N, Shahnawaz M, Godoy FJ, Montenegro J, Moreno-Gonzalez I, Martí AA. Monitoring the Formation of Amyloid Oligomers Using Photoluminescence Anisotropy. J Am Chem Soc 2019; 141:15605-15610. [PMID: 31536338 DOI: 10.1021/jacs.9b06966] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The formation of oligomeric soluble aggregates is related to the toxicity of amyloid peptides and proteins. In this manuscript, we report the use of a ruthenium polypyridyl complex ([Ru(bpy)2(dpqp)]2+) to track the formation of amyloid oligomers at different times using photoluminescence anisotropy. This technique is sensitive to the rotational correlation time of the molecule under study, which is consequently related to the size of the molecule. [Ru(bpy)2(dpqp)]2+ presents anisotropy values of zero when free in solution (due to its rapid rotation and long lifetime) but larger values as the size and concentration of amyloid-β (Aβ) oligomers increase. Our assays show that Aβ forms oligomers immediately after the assay is started, reaching a steady state at ∼48 h. SDS-PAGE, DLS, and TEM were used to confirm and characterize the formation of oligomers. Our experiments show that the rate of formation for Aβ oligomers is temperature dependent, with faster rates as the temperature of the assay is increased. The probe was also effective in monitoring the formation of α-synuclein oligomers at different times.
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Affiliation(s)
| | - Amir Aliyan
- Pasargad Institute for Advanced Innovative Solutions, & Khatam University , Tehran , 1991633361 , Iran
| | - Nathan P Cook
- Department of Chemistry , Williams College , Williamstown , Massachusetts 01267 , United States
| | | | - Ghibom Bhak
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Departamento de Química Orgánica , Universidade de Santiago de Compostela , 15782 Santiago de Compostela , Spain
| | | | | | - Erick M Flores
- Departamento de Química de los Materiales, Facultad de Química y Biología , Universidad de Santiago de Chile , Av. Libertador B. O'Higgins , 3363 Santiago , Chile
| | - Nicolas Mendez
- Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology , The University of Texas Health and Science Center at Houston , Houston , Texas 77030 , United States
| | - Mohammad Shahnawaz
- Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology , The University of Texas Health and Science Center at Houston , Houston , Texas 77030 , United States
| | - Fernando J Godoy
- Departamento de Química de los Materiales, Facultad de Química y Biología , Universidad de Santiago de Chile , Av. Libertador B. O'Higgins , 3363 Santiago , Chile
| | - Javier Montenegro
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Departamento de Química Orgánica , Universidade de Santiago de Compostela , 15782 Santiago de Compostela , Spain
| | - Ines Moreno-Gonzalez
- Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology , The University of Texas Health and Science Center at Houston , Houston , Texas 77030 , United States.,Dpto. Biologia Celular, Genetica y Fisiologia, Instituto de Investigacion Biomedica de Malaga-IBIMA, Facultad de Ciencias , Universidad de Malaga, Spain and Centro de Investigacion Biomedica en Red sobre Enfermedades Neurodegenerativas (CIBERNED) , Madrid , Spain
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24
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Abstract
The misfolding and aggregation of tau protein into neurofibrillary tangles is the main underlying hallmark of tauopathies. Most tauopathies have a sporadic origin and can be associated with multiple risk factors. Traumatic brain injury (TBI) has been suggested as a risk factor for tauopathies by triggering disease onset and facilitating its progression. Several studies indicate that TBI seems to be a risk factor to development of Alzheimer disease and chronic traumatic encephalopathy, because there is a relationship of TBI severity and propensity to development of these illnesses. In this study, we evaluated whether moderate to severe TBI can trigger the initial formation of pathological tau that would induce the development of the pathology throughout the brain. To this end, we subjected tau transgenic mice to TBI and assessed tau phosphorylation and aggregation pattern to create a spatial heat map of tau deposition and spreading in the brain. Our results suggest that brain injured tau transgenic mice have an accelerated tau pathology in different brain regions that increases over time compared with sham mice. The appearance of pathological tau occurs in regions distant to the injury area that are connected synaptically, suggesting dissemination of tau aggregates. Overall, this work posits TBI as a risk factor for tauopathies through the induction of tau hyperphosphorylation and aggregation.
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Affiliation(s)
- George Edwards
- Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, The University of Texas Health Science Center at Houston, Houston, Texas
| | - Jing Zhao
- Department of Neurobiology and Anatomy, The University of Texas Health Science Center at Houston, Houston, Texas
| | - Pramod K Dash
- Department of Neurobiology and Anatomy, The University of Texas Health Science Center at Houston, Houston, Texas
| | - Claudio Soto
- Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, The University of Texas Health Science Center at Houston, Houston, Texas
| | - Ines Moreno-Gonzalez
- Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, The University of Texas Health Science Center at Houston, Houston, Texas.,Department of Cell Biology, Networking Research Center on Neurodegenerative Diseases (CIBERNED), Facultad Ciencias, Universidad de Malaga, Malaga, Spain
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25
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Edwards GA, Dinamarca NM, Soto C, Moreno-Gonzalez I. P4-161: REPETITIVE MILD TRAUMATIC BRAIN INJURY TRIGGERS AND EXACERBATES TAU PATHOLOGY AND BEHAVIOR. Alzheimers Dement 2019. [DOI: 10.1016/j.jalz.2019.06.3823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- George A. Edwards
- The University of Texas Health Science Center at Houston; Houston TX USA
| | | | - Claudio Soto
- The University of Texas Health Science Center at Houston; Houston TX USA
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26
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Baglietto-Vargas D, Forner S, Cai L, Martini AC, Trujillo-Estrada L, Jiang S, Kramár E, Nuñez-Diaz C, Shahnawaz M, Matheos DP, Ma X, Da Cunha C, Soto C, Gutierrez A, Moreno-Gonzalez I, MacGregor GR, Green KN, Wood MA, Mortazavi A, Tenner A, LaFerla F. P3-069: HUMAN WILD TYPE Aβ KNOCK-IN MICE AS A BASIS TO STUDY SPORADIC ALZHEIMER'S DISEASE. Alzheimers Dement 2019. [DOI: 10.1016/j.jalz.2019.06.3096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
| | | | - Lena Cai
- University of California, Irvine; Irvine CA USA
| | | | | | - Shan Jiang
- Department of Developmental and Cell Biology; University of California; Irvine CA USA
| | - Enikö Kramár
- Institute for Memory Impairments and Neurological Disorders; University of California; Irvine CA USA
| | - Cristina Nuñez-Diaz
- Department of Cell Biology, Genetic and Physiology, Faculty of Sciences, Biomedical Research Institute of Malaga (IBIMA), Networking Research Center on Neurodegenerative Diseases (CIBERNED); University of Malaga; Malaga Spain
| | - Mohammad Shahnawaz
- The Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, McGovern Medical School; University of Texas Health Science Center at Houston; Houston TX USA
| | - Dina P. Matheos
- Institute for Memory Impairments and Neurological Disorders; University of California, Irvine; Irvine CA USA
| | - Xinyi Ma
- Department of Developmental and Cell Biology; University of California; Irvine CA USA
| | | | - Claudio Soto
- The University of Texas Health Science Center at Houston; Houston TX USA
| | - Antonia Gutierrez
- Department of Cell Biology, Faculty of Sciences; University of Malaga. CIBERNED, IBIMA; Malaga Spain
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27
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Moreno-Gonzalez I, Zhao J, Dash P, Soto C, Edwards GA. O5‐04‐02: TRAUMATIC BRAIN INJURY INDUCES TAU AGGREGATION AND SPREADING. Alzheimers Dement 2019. [DOI: 10.1016/j.jalz.2019.06.4853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
| | - Jing Zhao
- The University of Texas Health Science Center at Houston Houston TX USA
| | - Pramod Dash
- The University of Texas Health Science Center at Houston Houston TX USA
| | - Claudio Soto
- The University of Texas Health Science Center at Houston Houston TX USA
| | - George A. Edwards
- The University of Texas Health Science Center at Houston Houston TX USA
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Edwards III GA, Gamez N, Escobedo Jr. G, Calderon O, Moreno-Gonzalez I. Modifiable Risk Factors for Alzheimer's Disease. Front Aging Neurosci 2019; 11:146. [PMID: 31293412 PMCID: PMC6601685 DOI: 10.3389/fnagi.2019.00146] [Citation(s) in RCA: 122] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Accepted: 05/31/2019] [Indexed: 01/03/2023] Open
Abstract
Since first described in the early 1900s, Alzheimer's disease (AD) has risen exponentially in prevalence and concern. Research still drives to understand the etiology and pathogenesis of this disease and what risk factors can attribute to AD. With a majority of AD cases being of sporadic origin, the increasing exponential growth of an aged population and a lack of treatment, it is imperative to discover an easy accessible preventative method for AD. Some risk factors can increase the propensity of AD such as aging, sex, and genetics. Moreover, there are also modifiable risk factors-in terms of treatable medical conditions and lifestyle choices-that play a role in developing AD. These risk factors have their own biological mechanisms that may contribute to AD etiology and pathological consequences. In this review article, we will discuss modifiable risk factors and discuss the current literature of how each of these factors interplay into AD development and progression and if strategically analyzed and treated, could aid in protection against this neurodegenerative disease.
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Affiliation(s)
- George A. Edwards III
- The Mitchell Center for Alzheimer’s Disease and Related Brain Disorders, Department of Neurology, The University of Texas Houston Health Science Center at Houston, Houston, TX, United States
| | - Nazaret Gamez
- The Mitchell Center for Alzheimer’s Disease and Related Brain Disorders, Department of Neurology, The University of Texas Houston Health Science Center at Houston, Houston, TX, United States
- Networking Research Center on Neurodegenerative Diseases (CIBERNED), Department of Cell Biology, Facultad Ciencias, Universidad de Malaga, Malaga, Spain
| | - Gabriel Escobedo Jr.
- The Mitchell Center for Alzheimer’s Disease and Related Brain Disorders, Department of Neurology, The University of Texas Houston Health Science Center at Houston, Houston, TX, United States
| | - Olivia Calderon
- The Mitchell Center for Alzheimer’s Disease and Related Brain Disorders, Department of Neurology, The University of Texas Houston Health Science Center at Houston, Houston, TX, United States
| | - Ines Moreno-Gonzalez
- The Mitchell Center for Alzheimer’s Disease and Related Brain Disorders, Department of Neurology, The University of Texas Houston Health Science Center at Houston, Houston, TX, United States
- Networking Research Center on Neurodegenerative Diseases (CIBERNED), Department of Cell Biology, Facultad Ciencias, Universidad de Malaga, Malaga, Spain
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Meiyazhagan A, Aliyan A, Ayyappan A, Moreno-Gonzalez I, Susarla S, Yazdi S, Cuanalo-Contreras K, Khabashesku VN, Vajtai R, Martí AA, Ajayan PM. Soft-Lithographic Patterning of Luminescent Carbon Nanodots Derived from Collagen Waste. ACS Appl Mater Interfaces 2018; 10:36275-36283. [PMID: 30270613 DOI: 10.1021/acsami.8b13114] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Luminescent carbon dots (Cdots) synthesized using inexpensive precursors have inspired tremendous research interest because of their superior properties and applicability in various fields. In this work, we report a simple, economical, green route for the synthesis of multifunctional fluorescent Cdots prepared from a natural, low-cost source: collagen extracted from animal skin wastes. The as-synthesized metal-free Cdots were found to be in the size range of ∼1.2-9 nm, emitting bright blue photoluminescence with a calculated Cdot yield of ∼63%. Importantly, the soft-lithographic method used was inexpensive and yielded a variety of Cdot patterns with different geometrical structures and significant cellular biocompatibility. This novel approach to Cdot production highlights innovative ways of transforming industrial biowastes into advanced multifunctional materials which offer exciting potential for applications in nanophotonics and nanobiotechnology using a simple and scalable technique.
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Affiliation(s)
| | | | | | - Ines Moreno-Gonzalez
- Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, McGovern Medical School , University of Texas Health Science Center at Houston , Houston , Texas 77030 , United States
| | | | | | - Karina Cuanalo-Contreras
- Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, McGovern Medical School , University of Texas Health Science Center at Houston , Houston , Texas 77030 , United States
| | - Valery N Khabashesku
- Center for Technology Innovation , Baker Hughes Inc. , Houston , Texas 77040 , United States
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Moreno-Gonzalez I, Edwards GA, Ruiz NG, Peter P, Morales R, Marquez M, Pumarola M, Soto C. P1‐187: AGED CATTLE BRAIN DISPLAYS ALZHEIMER'S‐LIKE PATHOLOGY THAT CAN BE PROPAGATED IN A PRION‐LIKE MANNER. Alzheimers Dement 2018. [DOI: 10.1016/j.jalz.2018.06.191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
| | - George A. Edwards
- The University of Texas Health Science Center at HoustonHoustonTXUSA
| | | | | | - Rodrigo Morales
- The University of Texas Health Science Center at HoustonHoustonTXUSA
| | - Mercedes Marquez
- Animal Tissue Bank of Catalunya (BTAC)Universidad Autonoma de BarcelonaBarcelonaSpain
| | - Marti Pumarola
- Animal Tissue Bank of Catalunya (BTAC)Universidad Autonoma de BarcelonaBarcelonaSpain
| | - Claudio Soto
- The University of Texas Health Science Center at HoustonHoustonTXUSA
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Moreno-Gonzalez I, Edwards G, Salvadores N, Shahnawaz M, Diaz-Espinoza R, Soto C. Molecular interaction between type 2 diabetes and Alzheimer's disease through cross-seeding of protein misfolding. Mol Psychiatry 2017; 22:1327-1334. [PMID: 28044060 PMCID: PMC5495631 DOI: 10.1038/mp.2016.230] [Citation(s) in RCA: 134] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 09/29/2016] [Accepted: 10/14/2016] [Indexed: 02/07/2023]
Abstract
Numerous epidemiological studies have shown a significantly higher risk for development of Alzheimer's disease (AD) in patients affected by type 2 diabetes (T2D), but the molecular mechanism responsible for this association is presently unknown. Both diseases are considered protein misfolding disorders associated with the accumulation of protein aggregates; amyloid-beta (Aβ) and tau in the brain during AD, and islet amyloid polypeptide (IAPP) in pancreatic islets in T2D. Formation and accumulation of these proteins follows a seeding-nucleation model, where a misfolded aggregate or 'seed' promotes the rapid misfolding and aggregation of the native protein. Our underlying hypothesis is that misfolded IAPP produced in T2D potentiates AD pathology by cross-seeding Aβ, providing a molecular explanation for the link between these diseases. Here, we examined how misfolded IAPP affects Aβ aggregation and AD pathology in vitro and in vivo. We observed that addition of IAPP seeds accelerates Aβ aggregation in vitro in a seeding-like manner and the resulting fibrils are composed of both peptides. Transgenic animals expressing both human proteins exhibited exacerbated AD-like pathology compared with AD transgenic mice or AD transgenic animals with type 1 diabetes (T1D). Remarkably, IAPP colocalized with amyloid plaques in brain parenchymal deposits, suggesting that these peptides may directly interact and aggravate the disease. Furthermore, inoculation of pancreatic IAPP aggregates into the brains of AD transgenic mice resulted in more severe AD pathology and significantly greater memory impairments than untreated animals. These data provide a proof-of-concept for a new disease mechanism involving the interaction of misfolded proteins through cross-seeding events which may contribute to accelerate or exacerbate disease pathogenesis. Our findings could shed light on understanding the linkage between T2D and AD, two of the most prevalent protein misfolding disorders.
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Affiliation(s)
| | | | | | | | | | - Claudio Soto
- Corresponding author: Please send correspondence at University of Texas Medical School at Houston, 6431 Fannin St, Houston, Texas, 77030, USA.
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Carlock C, Wu J, Shim J, Moreno-Gonzalez I, Pitcher MR, Hicks J, Suzuki A, Iwata J, Quevado J, Lou Y. Interleukin33 deficiency causes tau abnormality and neurodegeneration with Alzheimer-like symptoms in aged mice. Transl Psychiatry 2017; 7:e1191. [PMID: 28763061 PMCID: PMC5611742 DOI: 10.1038/tp.2017.176] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
This corrects the article DOI: 10.1038/tp.2017.142.
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Mukherjee A, Morales-Scheihing D, Salvadores N, Moreno-Gonzalez I, Gonzalez C, Taylor-Presse K, Mendez N, Shahnawaz M, Gaber AO, Sabek OM, Fraga DW, Soto C. Induction of IAPP amyloid deposition and associated diabetic abnormalities by a prion-like mechanism. J Exp Med 2017; 214:2591-2610. [PMID: 28765400 PMCID: PMC5584114 DOI: 10.1084/jem.20161134] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 03/24/2017] [Accepted: 06/19/2017] [Indexed: 12/12/2022] Open
Abstract
In this article, Mukherjee et al. show that the pathologic and clinical alterations of type 2 diabetes can be induced in vitro and in vivo by prion-like transmission of IAPP misfolded aggregates, supporting an important role for IAPP aggregation in the disease. Although a large proportion of patients with type 2 diabetes (T2D) accumulate misfolded aggregates composed of the islet amyloid polypeptide (IAPP), its role in the disease is unknown. Here, we show that pancreatic IAPP aggregates can promote the misfolding and aggregation of endogenous IAPP in islet cultures obtained from transgenic mouse or healthy human pancreas. Islet homogenates immunodepleted with anti-IAPP–specific antibodies were not able to induce IAPP aggregation. Importantly, intraperitoneal inoculation of pancreatic homogenates containing IAPP aggregates into transgenic mice expressing human IAPP dramatically accelerates IAPP amyloid deposition, which was accompanied by clinical abnormalities typical of T2D, including hyperglycemia, impaired glucose tolerance, and a substantial reduction on β cell number and mass. Finally, induction of IAPP deposition and diabetic abnormalities were also induced in vivo by administration of IAPP aggregates prepared in vitro using pure, synthetic IAPP. Our findings suggest that some of the pathologic and clinical alterations of T2D might be transmissible through a similar mechanism by which prions propagate in prion diseases.
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Affiliation(s)
- Abhisek Mukherjee
- Mitchell Center for Alzheimer's Disease, Department of Neurology, John P. and Kathrine G. McGovern Medical School, University of Texas Medical School at Houston, Houston, TX
| | - Diego Morales-Scheihing
- Mitchell Center for Alzheimer's Disease, Department of Neurology, John P. and Kathrine G. McGovern Medical School, University of Texas Medical School at Houston, Houston, TX.,Facultad de Medicina, Universidad de los Andes, Las Condes, Santiago, Chile
| | - Natalia Salvadores
- Mitchell Center for Alzheimer's Disease, Department of Neurology, John P. and Kathrine G. McGovern Medical School, University of Texas Medical School at Houston, Houston, TX.,Center for Integrative Biology, Universidad Mayor, Santiago, Chile
| | - Ines Moreno-Gonzalez
- Mitchell Center for Alzheimer's Disease, Department of Neurology, John P. and Kathrine G. McGovern Medical School, University of Texas Medical School at Houston, Houston, TX
| | - Cesar Gonzalez
- Mitchell Center for Alzheimer's Disease, Department of Neurology, John P. and Kathrine G. McGovern Medical School, University of Texas Medical School at Houston, Houston, TX
| | - Kathleen Taylor-Presse
- Mitchell Center for Alzheimer's Disease, Department of Neurology, John P. and Kathrine G. McGovern Medical School, University of Texas Medical School at Houston, Houston, TX
| | - Nicolas Mendez
- Mitchell Center for Alzheimer's Disease, Department of Neurology, John P. and Kathrine G. McGovern Medical School, University of Texas Medical School at Houston, Houston, TX
| | - Mohammad Shahnawaz
- Mitchell Center for Alzheimer's Disease, Department of Neurology, John P. and Kathrine G. McGovern Medical School, University of Texas Medical School at Houston, Houston, TX
| | - A Osama Gaber
- Department of Surgery, Houston Methodist Hospital, Houston, TX
| | - Omaima M Sabek
- Department of Surgery, Houston Methodist Hospital, Houston, TX
| | - Daniel W Fraga
- Department of Surgery, Houston Methodist Hospital, Houston, TX
| | - Claudio Soto
- Mitchell Center for Alzheimer's Disease, Department of Neurology, John P. and Kathrine G. McGovern Medical School, University of Texas Medical School at Houston, Houston, TX .,Facultad de Medicina, Universidad de los Andes, Las Condes, Santiago, Chile
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Park KW, Eun Kim G, Morales R, Moda F, Moreno-Gonzalez I, Concha-Marambio L, Lee AS, Hetz C, Soto C. The Endoplasmic Reticulum Chaperone GRP78/BiP Modulates Prion Propagation in vitro and in vivo. Sci Rep 2017; 7:44723. [PMID: 28333162 PMCID: PMC5363067 DOI: 10.1038/srep44723] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Accepted: 02/14/2017] [Indexed: 01/20/2023] Open
Abstract
Prion diseases are fatal neurodegenerative disorders affecting several mammalian species, characterized by the accumulation of the misfolded form of the prion protein, which is followed by the induction of endoplasmic reticulum (ER) stress and the activation of the unfolded protein response (UPR). GRP78, also called BiP, is a master regulator of the UPR, reducing ER stress levels and apoptosis due to an enhancement of the cellular folding capacity. Here, we studied the role of GRP78 in prion diseases using several in vivo and in vitro approaches. Our results show that a reduction in the expression of this molecular chaperone accelerates prion pathogenesis in vivo. In addition, we observed that prion replication in cell culture was inversely related to the levels of expression of GRP78 and that both proteins interact in the cellular context. Finally, incubation of PrPSc with recombinant GRP78 led to the dose-dependent reduction of protease-resistant PrPScin vitro. Our results uncover a novel role of GRP78 in reducing prion pathogenesis, suggesting that modulating its levels/activity may offer a novel opportunity for designing therapeutic approaches for these diseases. These findings may also have implications for other diseases involving the accumulation of misfolded proteins.
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Affiliation(s)
- Kyung-Won Park
- Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, University of Texas Houston Medical School, 6431 Fannin St, Houston, TX 77030, USA
| | - Gyoung Eun Kim
- Department of Obstetrics and Gynecology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Rodrigo Morales
- Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, University of Texas Houston Medical School, 6431 Fannin St, Houston, TX 77030, USA
| | - Fabio Moda
- Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, University of Texas Houston Medical School, 6431 Fannin St, Houston, TX 77030, USA
| | - Ines Moreno-Gonzalez
- Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, University of Texas Houston Medical School, 6431 Fannin St, Houston, TX 77030, USA
| | - Luis Concha-Marambio
- Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, University of Texas Houston Medical School, 6431 Fannin St, Houston, TX 77030, USA.,Universidad de los Andes, Facultad de Medicina. Av San Carlos de Apoquindo 2200, Las Condes, Santiago, Chile
| | - Amy S Lee
- Department of Biochemistry and Molecular Biology, USC/Norris Comprehensive Cancer Center, Keck School of Medicine of the University of Southern California, USA
| | - Claudio Hetz
- Biomedical Neuroscience Institute, Faculty of Medicine, University of Chile, Santiago, Chile.,Center for Geroscience, Brain Health and Metabolism, Institute of Biomedical Sciences, University of Chile, Santiago, Chile.,Department of Immunology and Infectious diseases, Harvard School of Public Health, Boston MA, USA.,Buck Institute for Research on Aging, Novato, CA, 94945, USA
| | - Claudio Soto
- Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, University of Texas Houston Medical School, 6431 Fannin St, Houston, TX 77030, USA.,Universidad de los Andes, Facultad de Medicina. Av San Carlos de Apoquindo 2200, Las Condes, Santiago, Chile
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Edwards G, Moreno-Gonzalez I, Soto C. Amyloid-beta and tau pathology following repetitive mild traumatic brain injury. Biochem Biophys Res Commun 2016; 483:1137-1142. [PMID: 27492070 DOI: 10.1016/j.bbrc.2016.07.123] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Revised: 07/25/2016] [Accepted: 07/29/2016] [Indexed: 12/27/2022]
Abstract
Neurodegenerative diseases are characterized by distinctive neuropathological alterations, including the cerebral accumulation of misfolded protein aggregates, neuroinflammation, synaptic dysfunction, and neuronal loss, along with behavioral impairments. Traumatic brain injury (TBI) is believed to be an important risk factor for certain neurodegenerative diseases, such as Alzheimer's disease (AD) and chronic traumatic encephalopathy (CTE). TBI represents a ubiquitous problem in the world and could play a major role in the pathogenesis and etiology of AD or CTE later in life. TBI events appear to trigger and exacerbate some of the pathological processes in these diseases, in particular, the formation and accumulation of misfolded protein aggregates composed of amyloid-beta (Aβ) and tau. Here, we describe the relationship between repetitive mild TBI and the development of Aβ and tau pathology in patients affected by AD or CTE on the basis of epidemiological and pathological studies in human cases, and a thorough overview of data obtained in experimental animal models. We also discuss the possibility that TBI may contribute to initiate the formation of misfolded oligomeric species that may subsequently spread the pathology through a prion-like process of seeding of protein misfolding.
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Affiliation(s)
- George Edwards
- Mitchell Center for Alzheimer's disease and Related Brain Disorders, Department of Neurology, The University of Texas Medical School, Houston, Texas
| | - Ines Moreno-Gonzalez
- Mitchell Center for Alzheimer's disease and Related Brain Disorders, Department of Neurology, The University of Texas Medical School, Houston, Texas
| | - Claudio Soto
- Mitchell Center for Alzheimer's disease and Related Brain Disorders, Department of Neurology, The University of Texas Medical School, Houston, Texas.
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Hu PP, Morales R, Duran-Aniotz C, Moreno-Gonzalez I, Khan U, Soto C. Role of Prion Replication in the Strain-dependent Brain Regional Distribution of Prions. J Biol Chem 2016; 291:12880-12887. [PMID: 27056328 DOI: 10.1074/jbc.m115.681791] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Indexed: 01/30/2023] Open
Abstract
One intriguing feature of prion diseases is their strain variation. Prion strains are differentiated by the clinical consequences they generate in the host, their biochemical properties, and their potential to infect other animal species. The selective targeting of these agents to specific brain structures have been extensively used to characterize prion strains. However, the molecular basis dictating strain-specific neurotropism are still elusive. In this study, isolated brain structures from animals infected with four hamster prion strains (HY, DY, 139H, and SSLOW) were analyzed for their content of protease-resistant PrP(Sc) Our data show that these strains have different profiles of PrP deposition along the brain. These patterns of accumulation, which were independent of regional PrP(C) production, were not reproduced by in vitro replication when different brain regions were used as substrate for the misfolding-amplification reaction. On the contrary, our results show that in vitro replication efficiency depended exclusively on the amount of PrP(C) present in each part of the brain. Our results suggest that the variable regional distribution of PrP(Sc) in distinct strains is not determined by differences on prion formation, but on other factors or cellular pathways. Our findings may contribute to understand the molecular mechanisms of prion pathogenesis and strain diversity.
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Affiliation(s)
- Ping Ping Hu
- From the Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, University of Texas Houston Medical School, Houston, Texas 77030,; Innovative Drug Research Centre, Chongqing University, Chongqing 401331, China, and
| | - Rodrigo Morales
- From the Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, University of Texas Houston Medical School, Houston, Texas 77030
| | - Claudia Duran-Aniotz
- From the Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, University of Texas Houston Medical School, Houston, Texas 77030,; Universidad de los Andes, Facultad de Medicina, Av. San Carlos de Apoquindo 2200, Las Condes, Santiago, Chile
| | - Ines Moreno-Gonzalez
- From the Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, University of Texas Houston Medical School, Houston, Texas 77030
| | - Uffaf Khan
- From the Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, University of Texas Houston Medical School, Houston, Texas 77030
| | - Claudio Soto
- From the Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, University of Texas Houston Medical School, Houston, Texas 77030,; Universidad de los Andes, Facultad de Medicina, Av. San Carlos de Apoquindo 2200, Las Condes, Santiago, Chile.
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Carriba P, Jimenez S, Navarro V, Moreno-Gonzalez I, Barneda-Zahonero B, Moubarak RS, Lopez-Soriano J, Gutierrez A, Vitorica J, Comella JX. Amyloid-β reduces the expression of neuronal FAIM-L, thereby shifting the inflammatory response mediated by TNFα from neuronal protection to death. Cell Death Dis 2015; 6:e1639. [PMID: 25675299 PMCID: PMC4669818 DOI: 10.1038/cddis.2015.6] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2014] [Revised: 12/12/2014] [Accepted: 12/22/2014] [Indexed: 12/13/2022]
Abstract
The brains of patients with Alzheimer's disease (AD) present elevated levels of tumor necrosis factor-α (TNFα), a cytokine that has a dual function in neuronal cells. On one hand, TNFα can activate neuronal apoptosis, and on the other hand, it can protect these cells against amyloid-β (Aβ) toxicity. Given the dual behavior of this molecule, there is some controversy regarding its contribution to the pathogenesis of AD. Here we examined the relevance of the long form of Fas apoptotic inhibitory molecule (FAIM) protein, FAIM-L, in regulating the dual function of TNFα. We detected that FAIM-L was reduced in the hippocampi of patients with AD. We also observed that the entorhinal and hippocampal cortex of a mouse model of AD (PS1M146LxAPP751sl) showed a reduction in this protein before the onset of neurodegeneration. Notably, cultured neurons treated with the cortical soluble fractions of these animals showed a decrease in endogenous FAIM-L, an effect that is mimicked by the treatment with Aβ-derived diffusible ligands (ADDLs). The reduction in the expression of FAIM-L is associated with the progression of the neurodegeneration by changing the inflammatory response mediated by TNFα in neurons. In this sense, we also demonstrate that the protection afforded by TNFα against Aβ toxicity ceases when endogenous FAIM-L is reduced by short hairpin RNA (shRNA) or by treatment with ADDLs. All together, these results support the notion that levels of FAIM-L contribute to determine the protective or deleterious effect of TNFα in neuronal cells.
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Affiliation(s)
- P Carriba
- 1] Institut de Recerca de l'Hospital Universitari de la Vall d'Hebron (VHIR), Passeig Vall d'Hebron 119-129, Barcelona 08035, Spain [2] Institut de Neurociències, Departament de Bioquímica i Biologia Molecular, Facultat de Medicina, Universitat Autònoma de Barcelona, Campus de Bellaterra (Edifici M), Bellaterra 08193, Spain [3] Centro de Investigación Biomèdica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Spain
| | - S Jimenez
- 1] Centro de Investigación Biomèdica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Spain [2] Instituto de Biomedicina de Sevilla (IBIS), Hospital Universitario Virgen del Rocio, Consejo Superior de Investigaciones Cientificas Universidad de Sevilla, c/ Manuel Siurot s/n, Sevilla 41013, Spain [3] Departamento Bioquimica y Biologia Molecular, Facultad de Farmacia, Universidad de Sevilla, Sevilla 41012, Spain
| | - V Navarro
- 1] Centro de Investigación Biomèdica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Spain [2] Instituto de Biomedicina de Sevilla (IBIS), Hospital Universitario Virgen del Rocio, Consejo Superior de Investigaciones Cientificas Universidad de Sevilla, c/ Manuel Siurot s/n, Sevilla 41013, Spain [3] Departamento Bioquimica y Biologia Molecular, Facultad de Farmacia, Universidad de Sevilla, Sevilla 41012, Spain
| | - I Moreno-Gonzalez
- 1] Centro de Investigación Biomèdica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Spain [2] Departamento de Biologia Celular, Genetica y Fisiologia. Facultad de Ciencias. IBIMA Universidad de Malaga, Malaga 29071, Spain
| | - B Barneda-Zahonero
- 1] Institut de Recerca de l'Hospital Universitari de la Vall d'Hebron (VHIR), Passeig Vall d'Hebron 119-129, Barcelona 08035, Spain [2] Institut de Neurociències, Departament de Bioquímica i Biologia Molecular, Facultat de Medicina, Universitat Autònoma de Barcelona, Campus de Bellaterra (Edifici M), Bellaterra 08193, Spain [3] Centro de Investigación Biomèdica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Spain
| | - R S Moubarak
- 1] Institut de Recerca de l'Hospital Universitari de la Vall d'Hebron (VHIR), Passeig Vall d'Hebron 119-129, Barcelona 08035, Spain [2] Institut de Neurociències, Departament de Bioquímica i Biologia Molecular, Facultat de Medicina, Universitat Autònoma de Barcelona, Campus de Bellaterra (Edifici M), Bellaterra 08193, Spain [3] Centro de Investigación Biomèdica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Spain
| | - J Lopez-Soriano
- 1] Institut de Recerca de l'Hospital Universitari de la Vall d'Hebron (VHIR), Passeig Vall d'Hebron 119-129, Barcelona 08035, Spain [2] Institut de Neurociències, Departament de Bioquímica i Biologia Molecular, Facultat de Medicina, Universitat Autònoma de Barcelona, Campus de Bellaterra (Edifici M), Bellaterra 08193, Spain [3] Centro de Investigación Biomèdica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Spain
| | - A Gutierrez
- 1] Centro de Investigación Biomèdica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Spain [2] Departamento de Biologia Celular, Genetica y Fisiologia. Facultad de Ciencias. IBIMA Universidad de Malaga, Malaga 29071, Spain
| | - J Vitorica
- 1] Centro de Investigación Biomèdica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Spain [2] Instituto de Biomedicina de Sevilla (IBIS), Hospital Universitario Virgen del Rocio, Consejo Superior de Investigaciones Cientificas Universidad de Sevilla, c/ Manuel Siurot s/n, Sevilla 41013, Spain [3] Departamento Bioquimica y Biologia Molecular, Facultad de Farmacia, Universidad de Sevilla, Sevilla 41012, Spain
| | - J X Comella
- 1] Institut de Recerca de l'Hospital Universitari de la Vall d'Hebron (VHIR), Passeig Vall d'Hebron 119-129, Barcelona 08035, Spain [2] Institut de Neurociències, Departament de Bioquímica i Biologia Molecular, Facultat de Medicina, Universitat Autònoma de Barcelona, Campus de Bellaterra (Edifici M), Bellaterra 08193, Spain [3] Centro de Investigación Biomèdica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Spain
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Duran-Aniotz C, Morales R, Moreno-Gonzalez I, Hu PP, Fedynyshyn J, Soto C. Aggregate-depleted brain fails to induce Aβ deposition in a mouse model of Alzheimer's disease. PLoS One 2014; 9:e89014. [PMID: 24533166 PMCID: PMC3923072 DOI: 10.1371/journal.pone.0089014] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2013] [Accepted: 01/13/2014] [Indexed: 11/19/2022] Open
Abstract
Recent studies in animal models of Alzheimer's disease (AD) show that amyloid-beta (Aβ) misfolding can be transmissible; however, the mechanisms by which this process occurs have not been fully explored. The goal of this study was to analyze whether depletion of aggregates from an AD brain suppresses its in vivo "seeding" capability. Removal of aggregates was performed by using the Aggregate Specific Reagent 1 (ASR1) compound which has been previously described to specifically bind misfolded species. Our results show that pre-treatment with ASR1-coupled magnetic beads reduces the in vivo misfolding inducing capability of an AD brain extract. These findings shed light respect to the active principle responsible for the prion-like spreading of Alzheimer's amyloid pathology and open the possibility of using seeds-capturing reagents as a promising target for AD treatment.
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Affiliation(s)
- Claudia Duran-Aniotz
- Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, University of Texas Houston Medical School, Houston, Texas, United States of America
- Universidad de los Andes, Facultad de Medicina, Santiago, Chile
| | - Rodrigo Morales
- Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, University of Texas Houston Medical School, Houston, Texas, United States of America
| | - Ines Moreno-Gonzalez
- Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, University of Texas Houston Medical School, Houston, Texas, United States of America
| | - Ping Ping Hu
- Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, University of Texas Houston Medical School, Houston, Texas, United States of America
- Education Ministry Key Laboratory on Luminescence and Real-Time Analysis, College of Life Sciences, Southwest University, Chongqing, China
| | - Joseph Fedynyshyn
- Novartis Vaccines and Diagnostics, Emeryville, California, United States of America
| | - Claudio Soto
- Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, University of Texas Houston Medical School, Houston, Texas, United States of America
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Duran-Aniotz C, Morales R, Moreno-Gonzalez I, Hu PP, Soto C. Brains from non-Alzheimer's individuals containing amyloid deposits accelerate Aβ deposition in vivo. Acta Neuropathol Commun 2013; 1:76. [PMID: 24252208 PMCID: PMC4046659 DOI: 10.1186/2051-5960-1-76] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Accepted: 11/01/2013] [Indexed: 12/14/2022] Open
Abstract
Background One of the main features of Alzheimer’s disease (AD) is the presence of Aβ deposits, which accumulate in the brain years before the onset of symptoms. We and others have demonstrated that cerebral Aβ-amyloidosis can be induced in vivo by administration of AD-brain extracts into transgenic mice. However, it is currently unknown whether amyloid formation can be induced using extracts from individuals harboring Aβ deposits, but not clinical disease. Results In this study we analyzed the amyloid-inducing capability of samples from individuals affected by mild cognitive impairment (MCI) and Non-Demented persons with Alzheimer’s disease Neuropathology (NDAN). Our results show that inoculation of transgenic mice with MCI and NDAN brain samples accelerated Aβ pathology in a similar way as extracts from confirmed AD. Conclusions This data demonstrate that the sole presence of Aβ aggregates in a given sample, regardless of the clinical condition, is capable to accelerate Aβ deposition in vivo. These findings indicate that the amyloid-inducing activity may be present in the brain of people during pre-symptomatic or a-symptomatic stages of AD.
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Trujillo-Estrada L, Jimenez S, De Castro V, Torres M, Baglietto-Vargas D, Moreno-Gonzalez I, Navarro V, Sanchez-Varo R, Sanchez-Mejias E, Davila JC, Vizuete M, Gutierrez A, Vitorica J. In vivo modification of Abeta plaque toxicity as a novel neuroprotective lithium-mediated therapy for Alzheimer's disease pathology. Acta Neuropathol Commun 2013; 1:73. [PMID: 24252759 PMCID: PMC3833287 DOI: 10.1186/2051-5960-1-73] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Accepted: 11/08/2013] [Indexed: 01/01/2023] Open
Abstract
Background Alzheimer’s disease (AD) is characterized by the abnormal accumulation of extracellular beta-amyloid (Abeta) plaques, intracellular hyperphosphorylated tau, progressive synaptic alterations, axonal dystrophies, neuronal loss and the deterioration of cognitive capabilities of patients. However, no effective disease-modifying treatment has been yet developed. In this work we have evaluated whether chronic lithium treatment could ameliorate the neuropathology evolution of our well characterized PS1M146LxAPPSwe-London mice model. Results Though beneficial effects of lithium have been previously described in different AD models, here we report a novel in vivo action of this compound that efficiently ameliorated AD-like pathology progression and rescued memory impairments by reducing the toxicity of Abeta plaques. Transgenic PS1M146LxAPPSwe-London mice, treated before the pathology onset, developed smaller plaques characterized by higher Abeta compaction, reduced oligomeric-positive halo and therefore with attenuated capacity to induce neuronal damage. Importantly, neuronal loss in hippocampus and entorhinal cortex was fully prevented. Our data also demonstrated that the axonal dystrophic area associated with lithium-modified plaques was highly reduced. Moreover, a significant lower accumulation of phospho-tau, LC3-II and ubiquitinated proteins was detected in treated mice. Our study highlights that this switch of plaque quality by lithium could be mediated by astrocyte activation and the release of heat shock proteins, which concentrate in the core of the plaques. Conclusions Our data demonstrate that the pharmacological in vivo modulation of the extracellular Abeta plaque compaction/toxicity is indeed possible and, in addition, might constitute a novel promising and innovative approach to develop a disease-modifying therapeutic intervention against AD.
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Affiliation(s)
- Rodrigo Morales
- Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, University of Texas Houston Medical School, Houston, Texas, United States of America
| | - Ines Moreno-Gonzalez
- Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, University of Texas Houston Medical School, Houston, Texas, United States of America
| | - Claudio Soto
- Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, University of Texas Houston Medical School, Houston, Texas, United States of America
- * E-mail:
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Moreno-Gonzalez I, Estrada LD, Sanchez-Mejias E, Soto C. Smoking exacerbates amyloid pathology in a mouse model of Alzheimer's disease. Nat Commun 2013; 4:1495. [PMID: 23422663 DOI: 10.1038/ncomms2494] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Accepted: 01/15/2013] [Indexed: 12/18/2022] Open
Abstract
Several epidemiological studies have shown that cigarette smoking might alter the incidence of Alzheimer's disease. However, inconsistent results have been reported regarding the risk of Alzheimer's disease among smokers. Previous studies in experimental animal models have reported that administration of some cigarette components (for example, nicotine) alters amyloid-β aggregation, providing a possible link. However, extrapolation of these findings towards the in vivo scenario is not straightforward as smoke inhalation involves a number of other components. Here, we analysed the effect of smoking under more relevant conditions. We exposed transgenic mouse models of Alzheimer's disease to cigarette smoke and analysed the neuropathological alterations in comparison with animals not subjected to smoke inhalation. Our results showed that smoking increases the severity of some abnormalities typical of Alzheimer's disease, including amyloidogenesis, neuroinflammation and tau phosphorylation. Our findings suggest that cigarette smoking may increase Alzheimer's disease onset and exacerbate its features and thus, may constitute an important environmental risk factor for Alzheimer's disease.
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Affiliation(s)
- Ines Moreno-Gonzalez
- Mitchell Center for Alzheimer's Disease and Related Brain Disorders, Department of Neurology, University of Texas Medical School at Houston, Houston, Texas, USA
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Moreno-Gonzalez I, Soto C. Natural animal models of neurodegenerative protein misfolding diseases. Curr Pharm Des 2012; 18:1148-58. [PMID: 22288404 DOI: 10.2174/138161212799315768] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2011] [Accepted: 12/19/2011] [Indexed: 11/22/2022]
Abstract
Neurodegenerative diseases (NDs) are some of the most debilitating human illnesses. Research over the past 10 years has provided evidence for a common mechanism of neurodegeneration in which the critical event is the brain accumulation of misfolded protein aggregates. Although it is well established that misfolded proteins play an important role in these diseases, the mechanisms by which they cause cellular and tissue dysfunction are still unknown. To understand the molecular basis of NDs and to develop therapeutic strategies against them, numerous transgenic rodent models have been produced, which reproduce some (but not all) of the features of these diseases. Importantly, some NDs are not exclusive to human beings, such as transmissible spongiform encephalopathies. Moreover, other diseases which are associated to aging (e.g. Alzheimer's disease) could be studied in aged mammals, which could reproduce the human disease in a more natural way. Although the usefulness of transgenic mice is unquestionable, the information obtained from natural non-transgenic models could be very valuable to fully understand the pathogenesis of these devastating diseases.
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Sanchez-Varo R, Trujillo-Estrada L, Sanchez-Mejias E, Torres M, Baglietto-Vargas D, Moreno-Gonzalez I, De Castro V, Jimenez S, Ruano D, Vizuete M, Davila JC, Garcia-Verdugo JM, Jimenez AJ, Vitorica J, Gutierrez A. Abnormal accumulation of autophagic vesicles correlates with axonal and synaptic pathology in young Alzheimer's mice hippocampus. Acta Neuropathol 2012; 123:53-70. [PMID: 22020633 PMCID: PMC3249205 DOI: 10.1007/s00401-011-0896-x] [Citation(s) in RCA: 152] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2011] [Revised: 09/27/2011] [Accepted: 10/13/2011] [Indexed: 12/25/2022]
Abstract
Dystrophic neurites associated with amyloid plaques precede neuronal death and manifest early in Alzheimer's disease (AD). In this work we have characterized the plaque-associated neuritic pathology in the hippocampus of young (4- to 6-month-old) PS1(M146L)/APP(751SL) mice model, as the initial degenerative process underlying functional disturbance prior to neuronal loss. Neuritic plaques accounted for almost all fibrillar deposits and an axonal origin of the dystrophies was demonstrated. The early induction of autophagy pathology was evidenced by increased protein levels of the autophagosome marker LC3 that was localized in the axonal dystrophies, and by electron microscopic identification of numerous autophagic vesicles filling and causing the axonal swellings. Early neuritic cytoskeletal defects determined by the presence of phosphorylated tau (AT8-positive) and actin-cofilin rods along with decreased levels of kinesin-1 and dynein motor proteins could be responsible for this extensive vesicle accumulation within dystrophic neurites. Although microsomal Aβ oligomers were identified, the presence of A11-immunopositive Aβ plaques also suggested a direct role of plaque-associated Aβ oligomers in defective axonal transport and disease progression. Most importantly, presynaptic terminals morphologically disrupted by abnormal autophagic vesicle buildup were identified ultrastructurally and further supported by synaptosome isolation. Finally, these early abnormalities in axonal and presynaptic structures might represent the morphological substrate of hippocampal dysfunction preceding synaptic and neuronal loss and could significantly contribute to AD pathology in the preclinical stages.
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Moreno-Gonzalez I, Soto C. Misfolded protein aggregates: mechanisms, structures and potential for disease transmission. Semin Cell Dev Biol 2011; 22:482-7. [PMID: 21571086 DOI: 10.1016/j.semcdb.2011.04.002] [Citation(s) in RCA: 149] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2011] [Revised: 04/15/2011] [Accepted: 04/25/2011] [Indexed: 10/18/2022]
Abstract
Some of the most prevalent human degenerative diseases appear as a result of the misfolding and aggregation of proteins. Compelling evidence suggest that misfolded protein aggregates play an important role in cell dysfunction and tissue damage, leading to the disease. Prion protein (Prion diseases), amyloid-beta (Alzheimer's disease), alpha-synuclein (Parkinson's disease), Huntingtin (Huntington's disease), serum amyloid A (AA amyloidosis) and islet amyloid polypeptide (type 2 diabetes) are some of the proteins that trigger disease when they get misfolded. The recent understanding of the crucial role of misfolded proteins as well as the structural requirements and mechanism of protein misfolding have raised the possibility that these diseases may be transmissible by self-propagation of the protein misfolding process in a similar way as the infamous prions transmit prion diseases. Future research in this field should aim to clarify this possibility and translate the knowledge of the basic disease mechanisms into development of novel strategies for early diagnosis and efficient treatment.
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Affiliation(s)
- Ines Moreno-Gonzalez
- Mitchell Center Alzheimer's Disease and Related Brain Disorders, Department of Neurology, University of Texas Houston Medical School, 6431 Fannin St, Houston, TX 77030, USA
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Baglietto-Vargas D, Moreno-Gonzalez I, Sanchez-Varo R, Jimenez S, Trujillo-Estrada L, Sanchez-Mejias E, Torres M, Romero-Acebal M, Ruano D, Vizuete M, Vitorica J, Gutierrez A. Calretinin interneurons are early targets of extracellular amyloid-beta pathology in PS1/AbetaPP Alzheimer mice hippocampus. J Alzheimers Dis 2010; 21:119-32. [PMID: 20413859 DOI: 10.3233/jad-2010-100066] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Specific neuronal networks are preferentially affected in the early stages of Alzheimer's disease (AD). The distinct subpopulations of hippocampal inhibitory GABAergic system have been shown to display differential vulnerability to neurodegeneration in AD. We have previously reported a substantial loss of SOM/NPY interneurons, whereas those expressing parvalbumin were unaltered, in the hippocampus of 6 month-old PS1/AbetaPP transgenic mice. In the present study, we now investigated the pathological changes of hippocampal calretinin (CR) interneurons in this PS1/AbetaPP model from 2 to 12 months of age. The total number of CR-immunoreactive inhibitory cells was determined by stereology in CA1 and CA2/3 subfields. Our findings show a substantial decrease (35%-45%) of CR-positive interneurons in both hippocampal subfields of PS1/AbetaPP mice at very early age (4 months) compared to age-matched control mice. This decrease was accompanied by a reduced CR mRNA content as determined by quantitative RT-PCR. However, the number of another hippocampal CR-positive population (belonging to Cajal-Retzius cells) was not affected. The selective early loss of CR-interneurons was parallel to the appearance of extracellular Abeta deposits, preferentially in CR-axonal fields, and the formation of dystrophic neurites. This specific GABAergic subpopulation plays a crucial role in the generation of synchronous rhythmic activity in hippocampus by controlling other interneurons. Therefore, early alterations of hippocampal inhibitory functionality in AD, caused by select CR-cells neurodegeneration, could result in cognitive impairments seen in initial stages of the disease.
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Moreno-Gonzalez I, Baglietto-Vargas D, Sanchez-Varo R, Jimenez S, Trujillo-Estrada L, Sanchez-Mejias E, Del Rio JC, Torres M, Romero-Acebal M, Ruano D, Vizuete M, Vitorica J, Gutierrez A. Extracellular amyloid-beta and cytotoxic glial activation induce significant entorhinal neuron loss in young PS1(M146L)/APP(751SL) mice. J Alzheimers Dis 2010; 18:755-76. [PMID: 19661615 DOI: 10.3233/jad-2009-1192] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Here we demonstrated that extracellular, not intracellular, amyloid-beta (Abeta) and the associated cytotoxic glial neuroinflammatory response are major contributors to early neuronal loss in a PS1xAPP model. A significant loss of principal (27%) and SOM/NPY (56-46%) neurons was found in the entorhinal cortex at 6 months of age. Loss of principal cells occurred selectively in deep layers (primarily layer V) whereas SOM/NPY cell loss was evenly distributed along the cortical column. Neither layer V pyramidal neurons nor SOM/NPY interneurons displayed intracellular Abeta immunoreactivity, even after formic acid retrieval; thus, extracellular factors should be preferentially implicated in this selective neurodegeneration. Amyloid deposits were mainly concentrated in deep layers at 4-6 months, and of relevance was the existence of a potentially cytotoxic inflammatory response (TNFalpha, TRAIL, and iNOS mRNAs were upregulated). Moreover, non-plaque associated activated microglial cells and reactive astrocytes expressed TNFalpha and iNOS, respectively. At this age, in the hippocampus of same animals, extracellular Abeta induced a non-cytotoxic glial activation. The opposite glial activation, at the same chronological age, in entorhinal cortex and hippocampus strongly support different mechanisms of disease progression in these two regions highly affected by Abeta pathology.
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Affiliation(s)
- Ines Moreno-Gonzalez
- Department of Biología Celular, Genética y Fisiología, Facultad de Ciencias, Universidad de Málaga, 29071, Málaga, Spain
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Vitorica J, Baglietto-Vargas D, Jimenez S, Moreno-Gonzalez I, Caballero C, Sanchez-Varo R, Torres M, Trujillo-Estrada L, Romero-Acebal M, Khan Z, Ruano D, Vizuete M, Gutierrez A. P3‐375: Phenotypic and functional switch in microglial cells correlates with neurodegeneration in the hippocampus of aged PS1xAPP transgenic model of Alzheimer's disease. Alzheimers Dement 2008. [DOI: 10.1016/j.jalz.2008.05.1945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Caballero C, Jimenez S, Moreno-Gonzalez I, Baglietto-Vargas D, Sanchez-Varo R, Gavilan MP, Ramos B, Del Rio JC, Vizuete M, Gutierrez A, Ruano D, Vitorica J. Inter-individual variability in the expression of the mutated form of hPS1M146L determined the production of Abeta peptides in the PS1xAPP transgenic mice. J Neurosci Res 2007; 85:787-97. [PMID: 17243176 DOI: 10.1002/jnr.21172] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The detection of the early phenotypic modifications of Alzheimer's disease (AD) models is fundamental to understand the progression and identify pharmacologic targets of this pathology. However, a large variability within different models and between age-matched mice from the same model has been observed. This variability could be due to heterogeneity in the Abeta production. Present results showed the existence of a large variability in the Abeta deposition in both hippocampus and cortex in 6-month-old PS1xAPP mice. This variability was not due to the expression of hAPP751SL, however, linear relationship between hPS1M146L mRNA and Abeta production was identified. The Abeta content was related to the incorporation of the hPS1M146L into functional gamma-secretase complexes, detected by the presence of the corresponding human or endogenous PS1-CTFs. Animals expressing low amount of hPS1M146L mRNA, displayed low hPS1-CTF incorporation and produced a low amount of Abeta peptides. Conversely, mice with relatively high hPS1 mRNA expression displayed high hPS1-CTF and high Abeta deposition. Furthermore, the Abeta total and Abeta1-42 content was increased dramatically by the expression of hPS1M146L (as compared with transgenic APPsl littermates). Therefore, variations in the expression of transgenic form of hPS1M146L in this model, or even between different models, influenced strongly the incorporation of the mutated PS1 into functional gamma-secretase complexes, the production of Abeta peptides and, in consequence, the detrimental effects of Abeta peptides. These data might implicate an "apparent gain-of-function" of the gamma-secretase complex by the expression of the mutated PS1M146L.
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Affiliation(s)
- Cristina Caballero
- Departmento de Bioquimica, Bromatologia, Toxicología y Medicina Legal, Facultad de Farmacia, Universidad de Sevilla, Sevilla, Spain
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Ramos B, Baglietto-Vargas D, del Rio JC, Moreno-Gonzalez I, Santa-Maria C, Jimenez S, Caballero C, Lopez-Tellez JF, Khan ZU, Ruano D, Gutierrez A, Vitorica J. Early neuropathology of somatostatin/NPY GABAergic cells in the hippocampus of a PS1×APP transgenic model of Alzheimer's disease. Neurobiol Aging 2006; 27:1658-72. [PMID: 16271420 DOI: 10.1016/j.neurobiolaging.2005.09.022] [Citation(s) in RCA: 137] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2005] [Revised: 07/26/2005] [Accepted: 09/19/2005] [Indexed: 01/29/2023]
Abstract
At advanced stages, Alzheimer's disease (AD) is characterized by an extensive neuronal loss. However, the early neurodegenerative deficiencies have not been yet identified. Here we report an extensive, selective and early neurodegeneration of the dendritic inhibitory interneurons (oriens-lacunosum moleculare, O-LM, and hilar perforant path-associated, HIPP, cells) in the hippocampus of a transgenic PS1xAPP AD model. At 6 months of age, from 22 different pre- and postsynaptic mRNA markers tested (including GABAergic, glutamatergic and cholinergic markers), only the expression of somatostatin (SOM) and NPY neuropeptides (O-LM and HIPP markers) displayed a significant decrease. Stereological cell counting demonstrated a profound diminution (50-60%) of SOM-immunopositive neurons, preceding the pyramidal cell loss in this AD model. SOM population co-expressing NPY was the most damaged cell subset. Furthermore, a linear correlation between SOM and/or NPY deficiency and Abeta content was also observed. Though the molecular mechanism of SOM neuronal loss remains to be determined, these findings might represent an early hippocampal neuropathology. Therefore, SOM and NPY neuropeptides could constitute important biomarkers to assess the efficacy of potential early AD treatments.
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Affiliation(s)
- Blanca Ramos
- Department Bioquimica, Bromatologia, Toxicologia y Medicina Legal, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, Spain
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