1
|
Pliássova A, Canas PM, Xavier AC, da Silva BS, Cunha RA, Agostinho P. Age-Related Changes in the Synaptic Density of Amyloid-β Protein Precursor and Secretases in the Human Cerebral Cortex. J Alzheimers Dis 2017; 52:1209-14. [PMID: 27104908 DOI: 10.3233/jad-160213] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Amyloid-β protein precursor (AβPP) is involved in synaptic formation and function. In the human cingulate cortex, AβPP was preferentially located in the presynaptic active zone as in rodents, indicating a preserved subsynaptic AβPP distribution across species and brain regions. Synaptic AβPP immunoreactivity was decreased with aging in cortical samples collected from autopsies of males (20-80 years), whereas the synaptic levels of α-secretase (ADAM10) and β-secretase (BACE1) did not significantly change. Decreased AβPP levels may be related to lower allostasis of synapses in the aged brain and their greater susceptibility to dysfunction characteristic of the onset of neurodegenerative disorders.
Collapse
Affiliation(s)
- Anna Pliássova
- CNC - Center for Neuroscience and Cell Biology, University of Coimbra, Portugal.,FMUC - Faculty of Medicine, University of Coimbra, Portugal
| | - Paula M Canas
- CNC - Center for Neuroscience and Cell Biology, University of Coimbra, Portugal.,FMUC - Faculty of Medicine, University of Coimbra, Portugal
| | - Ana Carolina Xavier
- CNC - Center for Neuroscience and Cell Biology, University of Coimbra, Portugal
| | - Beatriz S da Silva
- Portuguese National Institute of Legal Medicine and Forensic Sciences (INMLCF IP), Coimbra, Portugal
| | - Rodrigo A Cunha
- CNC - Center for Neuroscience and Cell Biology, University of Coimbra, Portugal.,FMUC - Faculty of Medicine, University of Coimbra, Portugal
| | - Paula Agostinho
- CNC - Center for Neuroscience and Cell Biology, University of Coimbra, Portugal.,FMUC - Faculty of Medicine, University of Coimbra, Portugal
| |
Collapse
|
2
|
Wirths O. Altered neurogenesis in mouse models of Alzheimer disease. NEUROGENESIS 2017; 4:e1327002. [PMID: 29564360 DOI: 10.1080/23262133.2017.1327002] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 04/28/2017] [Accepted: 04/28/2017] [Indexed: 10/19/2022]
Abstract
Amyloid-β (Aβ) peptides, as well as a variety of other protein fragments, are derived from proteolytical cleavage of the amyloid precursor protein (APP) and have been demonstrated to play a key role in the pathological changes underlying Alzheimer disease (AD). In AD mouse models, altered neurogenesis has been repeatedly reported to be associated with further AD-typical pathological hallmarks such as extracellular plaque deposition, behavioral deficits or neuroinflammation. While a toxic role of Aβ in neurodegeneration and impaired neuronal progenitor proliferation is likely and well-accepted, recent findings also suggest an important influence of APP-derived proteolitical fragments like the APP intracellular domain (AICD), as well as of APP itself.
Collapse
Affiliation(s)
- Oliver Wirths
- Division of Molecular Psychiatry, Department of Psychiatry and Psychotherapy, University Medical Center (UMG), Georg-August-University, Göttingen, Germany
| |
Collapse
|
3
|
Exosomes Secreted from HEK293-APP Swe/Ind Cells Impair the Hippocampal Neurogenesis. Neurotox Res 2017; 32:82-93. [DOI: 10.1007/s12640-017-9713-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 02/21/2017] [Accepted: 02/23/2017] [Indexed: 11/25/2022]
|
4
|
Wang S, Bolós M, Clark R, Cullen CL, Southam KA, Foa L, Dickson TC, Young KM. Amyloid β precursor protein regulates neuron survival and maturation in the adult mouse brain. Mol Cell Neurosci 2016; 77:21-33. [DOI: 10.1016/j.mcn.2016.09.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 08/12/2016] [Accepted: 09/19/2016] [Indexed: 01/08/2023] Open
|
5
|
Pan H, Wang D, Zhang X, Zhou D, Zhang H, Qian Q, He X, Liu Z, Liu Y, Zheng T, Zhang L, Wang M, Sun B. Amyloid β Is Not the Major Factor Accounting for Impaired Adult Hippocampal Neurogenesis in Mice Overexpressing Amyloid Precursor Protein. Stem Cell Reports 2016; 7:707-718. [PMID: 27693425 PMCID: PMC5063569 DOI: 10.1016/j.stemcr.2016.08.019] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Revised: 08/30/2016] [Accepted: 08/31/2016] [Indexed: 11/22/2022] Open
Abstract
Adult hippocampal neurogenesis was impaired in several Alzheimer's disease models overexpressing mutant human amyloid precursor protein (hAPP). However, the effects of wild-type hAPP on adult neurogenesis and whether the impaired adult hippocampal neurogenesis was caused by amyloid β (Aβ) or APP remained unclear. Here, we found that neurogenesis was impaired in the dentate gyrus (DG) of adult mice overexpressing wild-type hAPP (hAPP-I5) compared with controls. However, the adult hippocampal neurogenesis was more severely impaired in hAPP-I5 than that in hAPP-J20 mice, which express similar levels of hAPP mRNA but much higher levels of Aβ. Furthermore, reducing Aβ levels did not affect the number of doublecortin-positive cells in the DG of hAPP-J20 mice. Our results suggested that hAPP was more likely an important factor inhibiting adult neurogenesis, and Aβ was not the major factor affecting neurogenesis in the adult hippocampus of hAPP mice. Overexpression of wild-type hAPP impairs adult hippocampal neurogenesis Adult hippocampal neurogenesis was more severely impaired in hAPP-I5 than in hAPP-J20 Reducing Aβ levels did not affect adult neurogenesis in hAPP-J20 mice Aβ is not the major factor accounting for impaired adult neurogenesis in hAPP mice
Collapse
Affiliation(s)
- Hongyu Pan
- Department of Neurobiology, School of Basic Medical Sciences, Key Laboratory of Medical Neurobiology (Ministry of Health of China), Key Laboratory of Neurobiology of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province 310058, China
| | - Dongpi Wang
- Department of Neurobiology, School of Basic Medical Sciences, Key Laboratory of Medical Neurobiology (Ministry of Health of China), Key Laboratory of Neurobiology of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province 310058, China
| | - Xiaoqin Zhang
- Department of Neurobiology, School of Basic Medical Sciences, Key Laboratory of Medical Neurobiology (Ministry of Health of China), Key Laboratory of Neurobiology of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province 310058, China
| | - Dongming Zhou
- Department of Neurobiology, School of Basic Medical Sciences, Key Laboratory of Medical Neurobiology (Ministry of Health of China), Key Laboratory of Neurobiology of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province 310058, China
| | - Heng Zhang
- Department of Neurobiology, School of Basic Medical Sciences, Key Laboratory of Medical Neurobiology (Ministry of Health of China), Key Laboratory of Neurobiology of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province 310058, China
| | - Qi Qian
- Department of Neurology, Brain Medical Center, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province 310058, China
| | - Xiao He
- Department of Neurobiology, School of Basic Medical Sciences, Key Laboratory of Medical Neurobiology (Ministry of Health of China), Key Laboratory of Neurobiology of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province 310058, China
| | - Zhaoling Liu
- Department of Neurobiology, School of Basic Medical Sciences, Key Laboratory of Medical Neurobiology (Ministry of Health of China), Key Laboratory of Neurobiology of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province 310058, China
| | - Yunjin Liu
- Department of Neurobiology, School of Basic Medical Sciences, Key Laboratory of Medical Neurobiology (Ministry of Health of China), Key Laboratory of Neurobiology of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province 310058, China
| | - Tingting Zheng
- Department of Neurology, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province 310058, China
| | - Ling Zhang
- Department of Neurobiology, School of Basic Medical Sciences, Key Laboratory of Medical Neurobiology (Ministry of Health of China), Key Laboratory of Neurobiology of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province 310058, China
| | - Mingkai Wang
- Department of Neurobiology, School of Basic Medical Sciences, Key Laboratory of Medical Neurobiology (Ministry of Health of China), Key Laboratory of Neurobiology of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province 310058, China
| | - Binggui Sun
- Department of Neurobiology, School of Basic Medical Sciences, Key Laboratory of Medical Neurobiology (Ministry of Health of China), Key Laboratory of Neurobiology of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province 310058, China.
| |
Collapse
|
6
|
Fitzsimons CP, van Bodegraven E, Schouten M, Lardenoije R, Kompotis K, Kenis G, van den Hurk M, Boks MP, Biojone C, Joca S, Steinbusch HWM, Lunnon K, Mastroeni DF, Mill J, Lucassen PJ, Coleman PD, van den Hove DLA, Rutten BPF. Epigenetic regulation of adult neural stem cells: implications for Alzheimer's disease. Mol Neurodegener 2014; 9:25. [PMID: 24964731 PMCID: PMC4080757 DOI: 10.1186/1750-1326-9-25] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2014] [Accepted: 06/06/2014] [Indexed: 01/27/2023] Open
Abstract
Experimental evidence has demonstrated that several aspects of adult neural stem cells (NSCs), including their quiescence, proliferation, fate specification and differentiation, are regulated by epigenetic mechanisms. These control the expression of specific sets of genes, often including those encoding for small non-coding RNAs, indicating a complex interplay between various epigenetic factors and cellular functions.Previous studies had indicated that in addition to the neuropathology in Alzheimer's disease (AD), plasticity-related changes are observed in brain areas with ongoing neurogenesis, like the hippocampus and subventricular zone. Given the role of stem cells e.g. in hippocampal functions like cognition, and given their potential for brain repair, we here review the epigenetic mechanisms relevant for NSCs and AD etiology. Understanding the molecular mechanisms involved in the epigenetic regulation of adult NSCs will advance our knowledge on the role of adult neurogenesis in degeneration and possibly regeneration in the AD brain.
Collapse
Affiliation(s)
- Carlos P Fitzsimons
- Center for Neuroscience, Swammerdam Institute for Life Sciences, University of Amsterdam, SciencePark 904, 1098XH Amsterdam, The Netherlands
| | - Emma van Bodegraven
- Center for Neuroscience, Swammerdam Institute for Life Sciences, University of Amsterdam, SciencePark 904, 1098XH Amsterdam, The Netherlands
| | - Marijn Schouten
- Center for Neuroscience, Swammerdam Institute for Life Sciences, University of Amsterdam, SciencePark 904, 1098XH Amsterdam, The Netherlands
| | - Roy Lardenoije
- Department of Translational Neuroscience, School of Mental Health and Neuroscience (MHENS), Maastricht University, Maastricht, the Netherlands
| | - Konstantinos Kompotis
- Department of Translational Neuroscience, School of Mental Health and Neuroscience (MHENS), Maastricht University, Maastricht, the Netherlands
| | - Gunter Kenis
- Department of Translational Neuroscience, School of Mental Health and Neuroscience (MHENS), Maastricht University, Maastricht, the Netherlands
| | - Mark van den Hurk
- Department of Translational Neuroscience, School of Mental Health and Neuroscience (MHENS), Maastricht University, Maastricht, the Netherlands
| | - Marco P Boks
- Department Psychiatry, Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Caroline Biojone
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Samia Joca
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Harry WM Steinbusch
- Department of Translational Neuroscience, School of Mental Health and Neuroscience (MHENS), Maastricht University, Maastricht, the Netherlands
| | - Katie Lunnon
- University of Exeter Medical School, RILD Level 4, Barrack Road, University of Exeter, Devon, UK
| | - Diego F Mastroeni
- University of Exeter Medical School, RILD Level 4, Barrack Road, University of Exeter, Devon, UK
| | - Jonathan Mill
- University of Exeter Medical School, RILD Level 4, Barrack Road, University of Exeter, Devon, UK
| | - Paul J Lucassen
- Center for Neuroscience, Swammerdam Institute for Life Sciences, University of Amsterdam, SciencePark 904, 1098XH Amsterdam, The Netherlands
| | - Paul D Coleman
- Center for Neuroscience, Swammerdam Institute for Life Sciences, University of Amsterdam, SciencePark 904, 1098XH Amsterdam, The Netherlands
| | - Daniel LA van den Hove
- Department of Translational Neuroscience, School of Mental Health and Neuroscience (MHENS), Maastricht University, Maastricht, the Netherlands
| | - Bart PF Rutten
- Department of Translational Neuroscience, School of Mental Health and Neuroscience (MHENS), Maastricht University, Maastricht, the Netherlands
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Maastricht University Medical Centre, P.O. Box 616, 6200 MD Maastricht, The Netherlands
| |
Collapse
|
7
|
Krezymon A, Richetin K, Halley H, Roybon L, Lassalle JM, Francès B, Verret L, Rampon C. Modifications of hippocampal circuits and early disruption of adult neurogenesis in the tg2576 mouse model of Alzheimer's disease. PLoS One 2013; 8:e76497. [PMID: 24086745 PMCID: PMC3785457 DOI: 10.1371/journal.pone.0076497] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Accepted: 08/27/2013] [Indexed: 11/29/2022] Open
Abstract
At advanced stages of Alzheimer's disease, cognitive dysfunction is accompanied by severe alterations of hippocampal circuits that may largely underlie memory impairments. However, it is likely that anatomical remodeling in the hippocampus may start long before any cognitive alteration is detected. Using the well-described Tg2576 mouse model of Alzheimer's disease that develops progressive age-dependent amyloidosis and cognitive deficits, we examined whether specific stages of the disease were associated with the expression of anatomical markers of hippocampal dysfunction. We found that these mice develop a complex pattern of changes in their dentate gyrus with aging. Those include aberrant expression of neuropeptide Y and reduced levels of calbindin, reflecting a profound remodeling of inhibitory and excitatory circuits in the dentate gyrus. Preceding these changes, we identified severe alterations of adult hippocampal neurogenesis in Tg2576 mice. We gathered converging data in Tg2576 mice at young age, indicating impaired maturation of new neurons that may compromise their functional integration into hippocampal circuits. Thus, disruption of adult hippocampal neurogenesis occurred before network remodeling in this mouse model and therefore may account as an early event in the etiology of Alzheimer's pathology. Ultimately, both events may constitute key components of hippocampal dysfunction and associated cognitive deficits occurring in Alzheimer's disease.
Collapse
Affiliation(s)
- Alice Krezymon
- Université de Toulouse (UPS) Centre de Recherches sur la Cognition Animale, Toulouse, France
- Centre National de la Recherche Scientifique (CNRS) Centre de Recherches sur la Cognition Animale, Toulouse, France
| | - Kevin Richetin
- Université de Toulouse (UPS) Centre de Recherches sur la Cognition Animale, Toulouse, France
- Centre National de la Recherche Scientifique (CNRS) Centre de Recherches sur la Cognition Animale, Toulouse, France
| | - Hélène Halley
- Université de Toulouse (UPS) Centre de Recherches sur la Cognition Animale, Toulouse, France
- Centre National de la Recherche Scientifique (CNRS) Centre de Recherches sur la Cognition Animale, Toulouse, France
| | - Laurent Roybon
- Multi Park, Department of Experimental Medical Science, Wallenberg Neuroscience Center, Lund University, Lund, Sweden
| | - Jean-Michel Lassalle
- Université de Toulouse (UPS) Centre de Recherches sur la Cognition Animale, Toulouse, France
- Centre National de la Recherche Scientifique (CNRS) Centre de Recherches sur la Cognition Animale, Toulouse, France
| | - Bernard Francès
- Université de Toulouse (UPS) Centre de Recherches sur la Cognition Animale, Toulouse, France
- Centre National de la Recherche Scientifique (CNRS) Centre de Recherches sur la Cognition Animale, Toulouse, France
| | - Laure Verret
- Université de Toulouse (UPS) Centre de Recherches sur la Cognition Animale, Toulouse, France
- Centre National de la Recherche Scientifique (CNRS) Centre de Recherches sur la Cognition Animale, Toulouse, France
| | - Claire Rampon
- Université de Toulouse (UPS) Centre de Recherches sur la Cognition Animale, Toulouse, France
- Centre National de la Recherche Scientifique (CNRS) Centre de Recherches sur la Cognition Animale, Toulouse, France
| |
Collapse
|