1
|
Vardhan S, Jordan T, Sakiyama-Elbert S. Stem cell engineering approaches for investigating glial cues in central nervous system disorders. Curr Opin Biotechnol 2024; 87:103131. [PMID: 38599012 DOI: 10.1016/j.copbio.2024.103131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 03/04/2024] [Accepted: 03/26/2024] [Indexed: 04/12/2024]
Abstract
Glial cells are important in maintaining homeostasis for neurons in the central nervous system (CNS). During CNS disease or after injury, glia react to altered microenvironments and often acquire altered functions that contribute to disease pathology. A major focus for research is utilizing stem cell (SC)-derived glia as a potential renewable source for cell replacement to restore function, including neuronal support, and as a model for disease states to identify therapeutic targets. In this review, we focus on SC differentiation protocols for deriving three types of glial cells, astrocytes, oligodendrocytes, and microglia. These SC-derived glia can be used to identify critical cues that contribute to CNS disease progression and aid in investigation of therapeutic targets.
Collapse
Affiliation(s)
- Sangamithra Vardhan
- Department of Bioengineering, University of Washington, 850 Republican Street, Seattle, WA 98109, USA
| | - Tyler Jordan
- Department of Bioengineering, University of Washington, 850 Republican Street, Seattle, WA 98109, USA
| | - Shelly Sakiyama-Elbert
- Department of Bioengineering, University of Washington, 850 Republican Street, Seattle, WA 98109, USA.
| |
Collapse
|
2
|
Pidany F, Kroustkova J, Jenco J, Breiterova KH, Muckova L, Novakova L, Kunes J, Fibigar J, Kucera T, Novak M, Sorf A, Hrabinova M, Pulkrabkova L, Janousek J, Soukup O, Jun D, Korabecny J, Cahlikova L. Carltonine-derived compounds for targeted butyrylcholinesterase inhibition. RSC Med Chem 2024; 15:1601-1625. [PMID: 38784455 PMCID: PMC11110763 DOI: 10.1039/d4md00060a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 03/16/2024] [Indexed: 05/25/2024] Open
Abstract
The investigation into human butyrylcholinesterase (hBChE) inhibitors as therapeutic agents for Alzheimer's disease (AD) holds significant promise, addressing both symptomatic relief and disease progression. In the pursuit of novel drug candidates with a selective BChE inhibition pattern, we focused on naturally occurring template structures, specifically Amaryllidaceae alkaloids of the carltonine-type. Herein, we explored a series of compounds implementing an innovative chemical scaffold built on the 3- and 4-benzyloxy-benzylamino chemotype. Notably, compounds 28 (hBChE IC50 = 0.171 ± 0.063 μM) and 33 (hBChE IC50 = 0.167 ± 0.018 μM) emerged as top-ranked hBChE inhibitors. In silico simulations elucidated the binding modes of these compounds within hBChE. CNS availability was predicted using the BBB score algorithm, corroborated by in vitro permeability assessments with the most potent derivatives. Compound 33 was also inspected for aqueous solubility, microsomal and plasma stability. Chemoinformatics analysis validated these hBChE inhibitors for oral administration, indicating favorable gastrointestinal absorption in compliance with Lipinski's and Veber's rules. Safety assessments, crucial for the chronic administration typical in AD treatment, were conducted through cytotoxicity testing on human neuroblastoma (SH-SY5Y) and hepatocellular carcinoma (HepG2) cell lines.
Collapse
Affiliation(s)
- Filip Pidany
- Faculty of Pharmacy in Hradec Kralove, Department of Pharmacognosy and Pharmaceutical Botany, Charles University Akademika Heyrovskeho 1203 500 05 Hradec Kralove Czech Republic
| | - Jana Kroustkova
- Faculty of Pharmacy in Hradec Kralove, Department of Pharmacognosy and Pharmaceutical Botany, Charles University Akademika Heyrovskeho 1203 500 05 Hradec Kralove Czech Republic
| | - Jaroslav Jenco
- Faculty of Pharmacy in Hradec Kralove, Department of Pharmacognosy and Pharmaceutical Botany, Charles University Akademika Heyrovskeho 1203 500 05 Hradec Kralove Czech Republic
| | - Katerina Hradiska Breiterova
- Faculty of Pharmacy in Hradec Kralove, Department of Pharmacognosy and Pharmaceutical Botany, Charles University Akademika Heyrovskeho 1203 500 05 Hradec Kralove Czech Republic
| | - Lubica Muckova
- Biomedical Research Center, University Hospital Hradec Kralove Sokolska 581 500 05 Hradec Kralove Czech Republic
- Military Faculty of Medicine, Department of Toxicology and Military Pharmacy, University of Defence Trebesska 1575 500 01 Hradec Kralove Czech Republic
| | - Lucie Novakova
- Faculty of Pharmacy in Hradec Kralove, Department of Analytical Chemistry, Charles University Akademika Heyrovskeho 1203 500 05 Hradec Kralove Czech Republic
| | - Jiri Kunes
- Faculty of Pharmacy in Hradec Kralove, Department of Bioorganic and Organic Chemistry, Charles University Akademika Heyrovskeho 1203 500 05 Hradec Kralove Czech Republic
| | - Jakub Fibigar
- Military Faculty of Medicine, Department of Toxicology and Military Pharmacy, University of Defence Trebesska 1575 500 01 Hradec Kralove Czech Republic
| | - Tomas Kucera
- Military Faculty of Medicine, Department of Toxicology and Military Pharmacy, University of Defence Trebesska 1575 500 01 Hradec Kralove Czech Republic
| | - Martin Novak
- Biomedical Research Center, University Hospital Hradec Kralove Sokolska 581 500 05 Hradec Kralove Czech Republic
| | - Ales Sorf
- Military Faculty of Medicine, Department of Toxicology and Military Pharmacy, University of Defence Trebesska 1575 500 01 Hradec Kralove Czech Republic
| | - Martina Hrabinova
- Biomedical Research Center, University Hospital Hradec Kralove Sokolska 581 500 05 Hradec Kralove Czech Republic
- Military Faculty of Medicine, Department of Toxicology and Military Pharmacy, University of Defence Trebesska 1575 500 01 Hradec Kralove Czech Republic
| | - Lenka Pulkrabkova
- Biomedical Research Center, University Hospital Hradec Kralove Sokolska 581 500 05 Hradec Kralove Czech Republic
- Military Faculty of Medicine, Department of Toxicology and Military Pharmacy, University of Defence Trebesska 1575 500 01 Hradec Kralove Czech Republic
| | - Jiri Janousek
- Biomedical Research Center, University Hospital Hradec Kralove Sokolska 581 500 05 Hradec Kralove Czech Republic
| | - Ondrej Soukup
- Biomedical Research Center, University Hospital Hradec Kralove Sokolska 581 500 05 Hradec Kralove Czech Republic
- Military Faculty of Medicine, Department of Toxicology and Military Pharmacy, University of Defence Trebesska 1575 500 01 Hradec Kralove Czech Republic
| | - Daniel Jun
- Military Faculty of Medicine, Department of Toxicology and Military Pharmacy, University of Defence Trebesska 1575 500 01 Hradec Kralove Czech Republic
| | - Jan Korabecny
- Biomedical Research Center, University Hospital Hradec Kralove Sokolska 581 500 05 Hradec Kralove Czech Republic
- Military Faculty of Medicine, Department of Toxicology and Military Pharmacy, University of Defence Trebesska 1575 500 01 Hradec Kralove Czech Republic
| | - Lucie Cahlikova
- Faculty of Pharmacy in Hradec Kralove, Department of Pharmacognosy and Pharmaceutical Botany, Charles University Akademika Heyrovskeho 1203 500 05 Hradec Kralove Czech Republic
| |
Collapse
|
3
|
Lorenzini L, Zanella L, Sannia M, Baldassarro VA, Moretti M, Cescatti M, Quadalti C, Baldi S, Bartolucci G, Di Gloria L, Ramazzotti M, Clavenzani P, Costanzini A, De Giorgio R, Amedei A, Calzà L, Giardino L. Experimental colitis in young Tg2576 mice accelerates the onset of an Alzheimer's-like clinical phenotype. Alzheimers Res Ther 2024; 16:116. [PMID: 38773640 PMCID: PMC11110243 DOI: 10.1186/s13195-024-01471-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Accepted: 05/01/2024] [Indexed: 05/24/2024]
Abstract
Systemic inflammation and neuroinflammation affect the natural course of the sporadic form of Alzheimer's disease (AD), as supported by epidemiological and preclinical data, and several epidemiological studies indicate a higher prevalence of AD in patients with inflammatory bowel disease. In this study, we explored whether colitis induced by dextran sulfate sodium (DSS) in young, presymptomatic/preplaque mice worsens and/or anticipates age-dependent cognitive impairment in Tg2576, a widely used mouse model of AD. We demonstrated that DSS colitis induced in young Tg2576 mice anticipates the onset age of learning and memory deficit in the Morris water maze test. To explore potential mechanisms behind the acceleration of cognitive decline in Tg2576 mice by DSS colitis, we focused on gut microbiota, systemic inflammation and neuroinflammation markers. We observed a Firmicutes/Bacteroidetes ratio change in Tg2576 DSS animals comparable to that of elderly Tg2576 mice, suggesting accelerated microbiota aging in Tg2576 DSS mice, a change not observed in C57BL6 DSS mice. We also observed substantial differences between Tg2576 and WT mice in several inflammation and neuroinflammation-related parameters as early as 3 months of age, well before plaque deposition, a picture which evolved rapidly (between 3 and 5.5 months of age) in contrast to Tg2576 and WT littermates not treated with DSS. In detail, following induction of DSS colitis, WT and Tg2576 mice exhibited contrasting features in the expression level of inflammation-evoked astrocyte-associated genes in the hippocampus. No changes in microglial features occurred in the hippocampus between the experimental groups, whereas a reduced glial fibrillary acidic protein immunoreactivity was observed in Tg2576 vs. WT mice. This finding may reflect an atrophic, "loss-of-function" profile, further exacerbated by DSS where a decreased of GFAP mRNA expression level was detected. In conclusion, we suggest that as-yet unidentified peripheral mediators evoked by DSS colitis and involving the gut-brain axis emphasize an astrocyte "loss-of-function" profile present in young Tg2576 mice, leading to impaired synaptic morphological and functional integrity as a very early sign of AD.
Collapse
Affiliation(s)
- Luca Lorenzini
- Department of Veterinary Medical Sciences (DIMEVET), University of Bologna, Bologna, Italy
| | - Lorenzo Zanella
- Department of Veterinary Medical Sciences (DIMEVET), University of Bologna, Bologna, Italy
| | | | | | - Marzia Moretti
- Department of Veterinary Medical Sciences (DIMEVET), University of Bologna, Bologna, Italy
| | | | - Corinne Quadalti
- Department of Pharmacy and Biotechnology (FaBiT), University of Bologna, Via Tolara di Sopra 41/E, Bologna, 40064, Ozzano Emilia, Italy
| | - Simone Baldi
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Gianluca Bartolucci
- Department of Neuroscience, Psychology, Drug Research and Child Health NEUROFARBA, University of Florence, Florence, Italy
| | - Leandro Di Gloria
- Department of Biomedical, Experimental and Clinical Sciences "Mario Serio", University of Florence, Florence, Italy
| | - Matteo Ramazzotti
- Department of Biomedical, Experimental and Clinical Sciences "Mario Serio", University of Florence, Florence, Italy
| | - Paolo Clavenzani
- Department of Veterinary Medical Sciences (DIMEVET), University of Bologna, Bologna, Italy
| | - Anna Costanzini
- Department of Translational Medicine, University of Ferrara, Ferrara, Italy
| | - Roberto De Giorgio
- Department of Translational Medicine, University of Ferrara, Ferrara, Italy
| | - Amedeo Amedei
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Laura Calzà
- Department of Pharmacy and Biotechnology (FaBiT), University of Bologna, Via Tolara di Sopra 41/E, Bologna, 40064, Ozzano Emilia, Italy.
| | - Luciana Giardino
- Department of Veterinary Medical Sciences (DIMEVET), University of Bologna, Bologna, Italy
| |
Collapse
|
4
|
Magni G, Riboldi B, Ceruti S. Human Glial Cells as Innovative Targets for the Therapy of Central Nervous System Pathologies. Cells 2024; 13:606. [PMID: 38607045 PMCID: PMC11011741 DOI: 10.3390/cells13070606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 03/27/2024] [Accepted: 03/28/2024] [Indexed: 04/13/2024] Open
Abstract
In vitro and preclinical in vivo research in the last 35 years has clearly highlighted the crucial physiopathological role of glial cells, namely astrocytes/microglia/oligodendrocytes and satellite glial cells/Schwann cells in the central and peripheral nervous system, respectively. Several possible pharmacological targets to various neurodegenerative disorders and painful conditions have therefore been successfully identified, including receptors and enzymes, and mediators of neuroinflammation. However, the translation of these promising data to a clinical setting is often hampered by both technical and biological difficulties, making it necessary to perform experiments on human cells and models of the various diseases. In this review we will, therefore, summarize the most relevant data on the contribution of glial cells to human pathologies and on their possible pharmacological modulation based on data obtained in post-mortem tissues and in iPSC-derived human brain cells and organoids. The possibility of an in vivo visualization of glia reaction to neuroinflammation in patients will be also discussed.
Collapse
Affiliation(s)
| | | | - Stefania Ceruti
- Laboratory of Pain Therapy and Neuroimmunology, Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, via Balzaretti, 9, 20133 Milan, Italy; (G.M.); (B.R.)
| |
Collapse
|
5
|
Kim H, Le B, Goshi N, Zhu K, Grodzki AC, Lein PJ, Zhao M, Seker E. Rat primary cortical cell tri-culture to study effects of amyloid-beta on microglia function. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.03.15.584736. [PMID: 38558989 PMCID: PMC10979983 DOI: 10.1101/2024.03.15.584736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Introduction The etiology and progression of sporadic Alzheimer's Disease (AD) have been studied for decades. One proposed mechanism is that amyloid-beta (Aβ) proteins induce neuroinflammation, synapse loss, and neuronal cell death. Microglia play an especially important role in Aβ clearance, and alterations in microglial function due to aging or disease may result in Aβ accumulation and deleterious effects on neuronal function. However, studying these complex factors in vivo , where numerous confounding processes exist, is challenging, and until recently, in vitro models have not allowed sustained culture of microglia, astrocytes and neurons in the same culture. Here, we employ a tri-culture model of rat primary neurons, astrocytes, and microglia and compare it to co-culture (neurons and astrocytes) and mono-culture enriched for microglia to study microglial function (i.e., motility and Aβ clearance) and proteomic response to exogenous Aβ. Methods We established cortical co-culture (neurons and astrocytes), tri-culture (neurons, astrocytes, and microglia), and mono-culture (microglia) from perinatal rat pups. On days in vitro (DIV) 7 - 14, the cultures were exposed to fluorescently-labeled Aβ (FITC-Aβ) particles for varying durations. Images were analyzed to determine the number of FITC-Aβ particles after specific lengths of exposure. A group of cells were stained for βIII-tubulin, GFAP, and Iba1 for morphological analysis via quantitative fluorescence microscopy. Cytokine profiles from conditioned media were obtained. Live-cell imaging with images acquired every 5 minutes for 4 hours was employed to extract microglia motility parameters (e.g., Euclidean distance, migration speed, directionality ratio). Results and discussion FITC-Aβ particles were more effectively cleared in the tri-culture compared to the co-culture. This was attributed to microglia engulfing FITC-Aβ particles, as confirmed via epifluorescence and confocal microscopy. Adding FITC-Aβ significantly increased the size of microglia, but had no significant effect on neuronal surface coverage or astrocyte size. Analysis of the cytokine profile upon FITC-Aβ addition revealed a significant increase in proinflammatory cytokines (TNF-α, IL-1α, IL-1β, IL-6) in tri-culture, but not co-culture. In addition, Aβ addition altered microglia motility marked by swarming-like motion with decreased Euclidean distance yet unaltered speed. These results highlight the importance of cell-cell communication in microglia function (e.g., motility and Aβ clearance) and the utility of the tri-culture model to further investigate microglia dysfunction in AD.
Collapse
|
6
|
Beretta C, Svensson E, Dakhel A, Zyśk M, Hanrieder J, Sehlin D, Michno W, Erlandsson A. Amyloid-β deposits in human astrocytes contain truncated and highly resistant proteoforms. Mol Cell Neurosci 2024; 128:103916. [PMID: 38244652 DOI: 10.1016/j.mcn.2024.103916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 01/08/2024] [Accepted: 01/15/2024] [Indexed: 01/22/2024] Open
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder that develops over decades. Glial cells, including astrocytes are tightly connected to the AD pathogenesis, but their impact on disease progression is still unclear. Our previous data show that astrocytes take up large amounts of aggregated amyloid-beta (Aβ) but are unable to successfully degrade the material, which is instead stored intracellularly. The aim of the present study was to analyze the astrocytic Aβ deposits composition in detail in order to understand their role in AD propagation. For this purpose, human induced pluripotent cell (hiPSC)-derived astrocytes were exposed to sonicated Aβ42 fibrils and magnetic beads. Live cell imaging and immunocytochemistry confirmed that the ingested Aβ aggregates and beads were transported to the same lysosomal compartments in the perinuclear region, which allowed us to successfully isolate the Aβ deposits from the astrocytes. Using a battery of experimental techniques, including mass spectrometry, western blot, ELISA and electron microscopy we demonstrate that human astrocytes truncate and pack the Aβ aggregates in a way that makes them highly resistant. Moreover, the astrocytes release specifically truncated forms of Aβ via different routes and thereby expose neighboring cells to pathogenic proteins. Taken together, our study establishes a role for astrocytes in mediating Aβ pathology, which could be of relevance for identifying novel treatment targets for AD.
Collapse
Affiliation(s)
- C Beretta
- Department of Public Health and Caring Sciences, Molecular Geriatrics, Rudbeck Laboratory, Uppsala University, SE-752 37 Uppsala, Sweden.
| | - E Svensson
- Department of Public Health and Caring Sciences, Molecular Geriatrics, Rudbeck Laboratory, Uppsala University, SE-752 37 Uppsala, Sweden; Department of Neuroinflammation, UCL Queen Square Institute of Neurology, 1 Wakefield Street, WC1N 1PJ London, United Kingdom of Great Britain and Northern Ireland.
| | - A Dakhel
- Department of Public Health and Caring Sciences, Molecular Geriatrics, Rudbeck Laboratory, Uppsala University, SE-752 37 Uppsala, Sweden.
| | - M Zyśk
- Department of Public Health and Caring Sciences, Molecular Geriatrics, Rudbeck Laboratory, Uppsala University, SE-752 37 Uppsala, Sweden.
| | - J Hanrieder
- Department of Psychiatry and Neurochemistry, University of Gothenburg, SE-43180 Gothenburg, Sweden.
| | - D Sehlin
- Department of Public Health and Caring Sciences, Molecular Geriatrics, Rudbeck Laboratory, Uppsala University, SE-752 37 Uppsala, Sweden.
| | - W Michno
- Department of Public Health and Caring Sciences, Molecular Geriatrics, Rudbeck Laboratory, Uppsala University, SE-752 37 Uppsala, Sweden; Science for Life Laboratory, Uppsala University, SE-752 37 Uppsala, Sweden.
| | - A Erlandsson
- Department of Public Health and Caring Sciences, Molecular Geriatrics, Rudbeck Laboratory, Uppsala University, SE-752 37 Uppsala, Sweden.
| |
Collapse
|
7
|
Pagnon de la Vega M, Syvänen S, Giedraitis V, Hooley M, Konstantinidis E, Meier SR, Rokka J, Eriksson J, Aguilar X, Spires-Jones TL, Lannfelt L, Nilsson LNG, Erlandsson A, Hultqvist G, Ingelsson M, Sehlin D. Altered amyloid-β structure markedly reduces gliosis in the brain of mice harboring the Uppsala APP deletion. Acta Neuropathol Commun 2024; 12:22. [PMID: 38317196 PMCID: PMC10845526 DOI: 10.1186/s40478-024-01734-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 01/14/2024] [Indexed: 02/07/2024] Open
Abstract
Deposition of amyloid beta (Aβ) into plaques is a major hallmark of Alzheimer's disease (AD). Different amyloid precursor protein (APP) mutations cause early-onset AD by altering the production or aggregation properties of Aβ. We recently identified the Uppsala APP mutation (APPUpp), which causes Aβ pathology by a triple mechanism: increased β-secretase and altered α-secretase APP cleavage, leading to increased formation of a unique Aβ conformer that rapidly aggregates and deposits in the brain. The aim of this study was to further explore the effects of APPUpp in a transgenic mouse model (tg-UppSwe), expressing human APP with the APPUpp mutation together with the APPSwe mutation. Aβ pathology was studied in tg-UppSwe brains at different ages, using ELISA and immunohistochemistry. In vivo PET imaging with three different PET radioligands was conducted in aged tg-UppSwe mice and two other mouse models; tg-ArcSwe and tg-Swe. Finally, glial responses to Aβ pathology were studied in cell culture models and mouse brain tissue, using ELISA and immunohistochemistry. Tg-UppSwe mice displayed increased β-secretase cleavage and suppressed α-secretase cleavage, resulting in AβUpp42 dominated diffuse plaque pathology appearing from the age of 5-6 months. The γ-secretase cleavage was not affected. Contrary to tg-ArcSwe and tg-Swe mice, tg-UppSwe mice were [11C]PiB-PET negative. Antibody-based PET with the 3D6 ligand visualized Aβ pathology in all models, whereas the Aβ protofibril selective mAb158 ligand did not give any signals in tg-UppSwe mice. Moreover, unlike the other two models, tg-UppSwe mice displayed a very faint glial response to the Aβ pathology. The tg-UppSwe mouse model thus recapitulates several pathological features of the Uppsala APP mutation carriers. The presumed unique structural features of AβUpp42 aggregates were found to affect their interaction with anti-Aβ antibodies and profoundly modify the Aβ-mediated glial response, which may be important aspects to consider for further development of AD therapies.
Collapse
Affiliation(s)
- María Pagnon de la Vega
- Department of Public Health and Caring Sciences, Geriatrics, Uppsala University, Uppsala, Sweden
| | - Stina Syvänen
- Department of Public Health and Caring Sciences, Geriatrics, Uppsala University, Uppsala, Sweden
| | - Vilmantas Giedraitis
- Department of Public Health and Caring Sciences, Geriatrics, Uppsala University, Uppsala, Sweden
| | - Monique Hooley
- UK Dementia Research Institute, Edinburgh Medical School, University of Edinburgh, Edinburgh, UK
- Centre for Discovery Brain Sciences, University of Edinburgh, Edinburgh, UK
| | - Evangelos Konstantinidis
- Department of Public Health and Caring Sciences, Geriatrics, Uppsala University, Uppsala, Sweden
| | - Silvio R Meier
- Department of Public Health and Caring Sciences, Geriatrics, Uppsala University, Uppsala, Sweden
| | - Johanna Rokka
- Department of Public Health and Caring Sciences, Geriatrics, Uppsala University, Uppsala, Sweden
| | - Jonas Eriksson
- Department of Medicinal Chemistry, Division of Organic Pharmaceutical Chemistry, Uppsala University, Uppsala, Sweden
- PET Centre, Uppsala University Hospital, Uppsala, Sweden
| | - Ximena Aguilar
- Department of Public Health and Caring Sciences, Geriatrics, Uppsala University, Uppsala, Sweden
| | - Tara L Spires-Jones
- UK Dementia Research Institute, Edinburgh Medical School, University of Edinburgh, Edinburgh, UK
- Centre for Discovery Brain Sciences, University of Edinburgh, Edinburgh, UK
| | - Lars Lannfelt
- Department of Public Health and Caring Sciences, Geriatrics, Uppsala University, Uppsala, Sweden
- BioArctic AB, Stockholm, Sweden
| | - Lars N G Nilsson
- Department of Pharmacology, University of Oslo and Oslo University Hospital, Oslo, Norway
| | - Anna Erlandsson
- Department of Public Health and Caring Sciences, Geriatrics, Uppsala University, Uppsala, Sweden
| | | | - Martin Ingelsson
- Department of Public Health and Caring Sciences, Geriatrics, Uppsala University, Uppsala, Sweden
- Krembil Brain Institute, University Health Network, Toronto, ON, Canada
- Tanz Centre for Research in Neurodegenerative Diseases, Departments of Medicine and Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Dag Sehlin
- Department of Public Health and Caring Sciences, Geriatrics, Uppsala University, Uppsala, Sweden.
| |
Collapse
|
8
|
Melo de Farias AR, Pelletier A, Iohan LCC, Saha O, Bonnefond A, Amouyel P, Delahaye F, Lambert JC, Costa MR. Amyloid-Beta Peptides Trigger Premature Functional and Gene Expression Alterations in Human-Induced Neurons. Biomedicines 2023; 11:2564. [PMID: 37761004 PMCID: PMC10526858 DOI: 10.3390/biomedicines11092564] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 09/12/2023] [Accepted: 09/13/2023] [Indexed: 09/29/2023] Open
Abstract
Alzheimer's disease (AD) is the most prevalent cause of dementia in the elderly, characterized by the presence of amyloid-beta (Aβ) plaques, neurofibrillary tangles, neuroinflammation, synapse loss and neurodegeneration in the brain. The amyloid cascade hypothesis postulates that deposition of Aβ peptides is the causative agent of AD pathology, but we still lack comprehensive understanding of the molecular mechanisms connecting Aβ peptides to neuronal dysfunctions in AD. In this work, we investigate the early effects of Aβ peptide accumulation on the functional properties and gene expression profiles of human-induced neurons (hiNs). We show that hiNs acutely exposed to low concentrations of both cell-secreted Aβ peptides or synthetic Aβ1-42 exhibit alterations in the frequency of calcium transients suggestive of increased neuronal excitability. Using single-cell RNA sequencing, we also show that cell-secreted Aβ up-regulates the expression of several synapse-related genes and down-regulates the expression of genes associated with metabolic stress mainly in glutamatergic neurons and, to a lesser degree, in GABAergic neurons and astrocytes. These neuronal alterations correlate with activation of the SEMA5, EPHA and NECTIN signaling pathways, which are important regulators of synaptic plasticity. Altogether, our findings indicate that slight elevations in Aβ concentrations are sufficient to elicit transcriptional changes in human neurons, which can contribute to early alterations in neural network activity.
Collapse
Affiliation(s)
- Ana Raquel Melo de Farias
- Université de Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1167-RID-AGE Facteurs de Risque et Déterminants Moléculaires des Maladies Liées au Vieillissement, DISTALZ, 1 rue du Professeur Calmette, 59019 Lille, France; (A.R.M.d.F.); (O.S.); (P.A.); (J.-C.L.)
- Brain Institute, Federal University of Rio Grande do Norte, Campus Universitário Lagoa Nova, Av. Senador Salgado Filho, 3000, Natal 59078-970, Brazil
| | - Alexandre Pelletier
- Université de Lille, Inserm, CNRS, CHU Lille, Institut Pasteur de Lille, U1283-UMR 8199 EGID, Pôle Recherche, 1 Place de Verdun, CEDEX, 59045 Lille, France; (A.P.); (A.B.); (F.D.)
| | - Lukas Cruz Carvalho Iohan
- Bioinformatics Multidisciplinary Environment, Federal University of Rio Grande do Norte, Natal 59078-970, Brazil;
| | - Orthis Saha
- Université de Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1167-RID-AGE Facteurs de Risque et Déterminants Moléculaires des Maladies Liées au Vieillissement, DISTALZ, 1 rue du Professeur Calmette, 59019 Lille, France; (A.R.M.d.F.); (O.S.); (P.A.); (J.-C.L.)
| | - Amélie Bonnefond
- Université de Lille, Inserm, CNRS, CHU Lille, Institut Pasteur de Lille, U1283-UMR 8199 EGID, Pôle Recherche, 1 Place de Verdun, CEDEX, 59045 Lille, France; (A.P.); (A.B.); (F.D.)
| | - Philippe Amouyel
- Université de Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1167-RID-AGE Facteurs de Risque et Déterminants Moléculaires des Maladies Liées au Vieillissement, DISTALZ, 1 rue du Professeur Calmette, 59019 Lille, France; (A.R.M.d.F.); (O.S.); (P.A.); (J.-C.L.)
| | - Fabien Delahaye
- Université de Lille, Inserm, CNRS, CHU Lille, Institut Pasteur de Lille, U1283-UMR 8199 EGID, Pôle Recherche, 1 Place de Verdun, CEDEX, 59045 Lille, France; (A.P.); (A.B.); (F.D.)
| | - Jean-Charles Lambert
- Université de Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1167-RID-AGE Facteurs de Risque et Déterminants Moléculaires des Maladies Liées au Vieillissement, DISTALZ, 1 rue du Professeur Calmette, 59019 Lille, France; (A.R.M.d.F.); (O.S.); (P.A.); (J.-C.L.)
| | - Marcos R. Costa
- Université de Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1167-RID-AGE Facteurs de Risque et Déterminants Moléculaires des Maladies Liées au Vieillissement, DISTALZ, 1 rue du Professeur Calmette, 59019 Lille, France; (A.R.M.d.F.); (O.S.); (P.A.); (J.-C.L.)
- Brain Institute, Federal University of Rio Grande do Norte, Campus Universitário Lagoa Nova, Av. Senador Salgado Filho, 3000, Natal 59078-970, Brazil
| |
Collapse
|
9
|
Mothes T, Portal B, Konstantinidis E, Eltom K, Libard S, Streubel-Gallasch L, Ingelsson M, Rostami J, Lindskog M, Erlandsson A. Astrocytic uptake of neuronal corpses promotes cell-to-cell spreading of tau pathology. Acta Neuropathol Commun 2023; 11:97. [PMID: 37330529 PMCID: PMC10276914 DOI: 10.1186/s40478-023-01589-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 05/25/2023] [Indexed: 06/19/2023] Open
Abstract
Tau deposits in astrocytes are frequently found in Alzheimer's disease (AD) and other tauopathies. Since astrocytes do not express tau, the inclusions have been suggested to be of neuronal origin. However, the mechanisms behind their appearance and their relevance for disease progression remain unknown. Here we demonstrate, using a battery of experimental techniques that human astrocytes serve as an intermediator, promoting cell-to-cell spreading of pathological tau. Human astrocytes engulf and process, but fail to fully degrade dead neurons with tau pathology, as well as synthetic tau fibrils and tau aggregates isolated from AD brain tissue. Instead, the pathogenic tau is spread to nearby cells via secretion and tunneling nanotube mediated transfer. By performing co-culture experiments we could show that tau-containing astrocytes induce tau pathology in healthy human neurons directly. Furthermore, our results from a FRET based seeding assay, demonstrated that the tau proteoforms secreted by astrocytes have an exceptional seeding capacity, compared to the original tau species engulfed by the cells. Taken together, our study establishes a central role for astrocytes in mediating tau pathology, which could be of relevance for identifying novel treatment targets for AD and other tauopathies.
Collapse
Affiliation(s)
- Tobias Mothes
- Department of Public Health and Caring Sciences; Molecular Geriatrics, Rudbeck Laboratory, Uppsala University, 752 37, Uppsala, Sweden
| | - Benjamin Portal
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
| | - Evangelos Konstantinidis
- Department of Public Health and Caring Sciences; Molecular Geriatrics, Rudbeck Laboratory, Uppsala University, 752 37, Uppsala, Sweden
| | - Khalid Eltom
- Department of Public Health and Caring Sciences; Molecular Geriatrics, Rudbeck Laboratory, Uppsala University, 752 37, Uppsala, Sweden
| | - Sylwia Libard
- Department of Immunology, Genetics and Pathology, Neuro-Oncology and Neurodegeneration, Uppsala University, Uppsala, Sweden
| | - Linn Streubel-Gallasch
- Department of Public Health and Caring Sciences; Molecular Geriatrics, Rudbeck Laboratory, Uppsala University, 752 37, Uppsala, Sweden
| | - Martin Ingelsson
- Department of Public Health and Caring Sciences; Molecular Geriatrics, Rudbeck Laboratory, Uppsala University, 752 37, Uppsala, Sweden
- University Health Network, Krembil Brain Institute, Toronto, Canada
- Department of Medicine and Tanz Centre for Research in Neurodegenerative Diseases, University of Toronto, Toronto, Canada
| | - Jinar Rostami
- Department of Public Health and Caring Sciences; Molecular Geriatrics, Rudbeck Laboratory, Uppsala University, 752 37, Uppsala, Sweden
| | - Maria Lindskog
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
| | - Anna Erlandsson
- Department of Public Health and Caring Sciences; Molecular Geriatrics, Rudbeck Laboratory, Uppsala University, 752 37, Uppsala, Sweden.
| |
Collapse
|
10
|
Brolin E, Ingelsson M, Bergström J, Erlandsson A. Altered Distribution of SNARE Proteins in Primary Neurons Exposed to Different Alpha-Synuclein Proteoforms. Cell Mol Neurobiol 2023:10.1007/s10571-023-01355-3. [PMID: 37130995 DOI: 10.1007/s10571-023-01355-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 04/19/2023] [Indexed: 05/04/2023]
Abstract
Growing evidence indicates that the pathological alpha-synuclein (α-syn) aggregation in Parkinson's disease (PD) and dementia with Lewy bodies (DLB) starts at the synapses. Physiologic α-syn is involved in regulating neurotransmitter release by binding to the SNARE complex protein VAMP-2 on synaptic vesicles. However, in which way the SNARE complex formation is affected by α-syn pathology remains unclear. In this study, primary cortical neurons were exposed to either α-syn monomers or preformed fibrils (PFFs) for different time points and the effect on SNARE protein distribution was analyzed with a novel proximity ligation assay (PLA). Short-term exposure to monomers or PFFs for 24 h increased the co-localization of VAMP-2 and syntaxin-1, but reduced the co-localization of SNAP-25 and syntaxin-1, indicating a direct effect of the added α-syn on SNARE protein distribution. Long-term exposure to α-syn PFFs for 7 d reduced VAMP-2 and SNAP-25 co-localization, although there was only a modest induction of ser129 phosphorylated (pS129) α-syn. Similarly, exposure to extracellular vesicles collected from astrocytes treated with α-syn PFFs for 7 d influenced VAMP-2 and SNAP-25 co-localization despite only low levels of pS129 α-syn being formed. Taken together, our results demonstrate that different α-syn proteoforms have the potential to alter the distribution of SNARE proteins at the synapse.
Collapse
Affiliation(s)
- Emma Brolin
- Department of Public Health and Caring Sciences/Molecular Geriatrics, Rudbeck Laboratory, Uppsala University, SE-752 37, Uppsala, Sweden
| | - Martin Ingelsson
- Department of Public Health and Caring Sciences/Molecular Geriatrics, Rudbeck Laboratory, Uppsala University, SE-752 37, Uppsala, Sweden
- Krembil Brain Institute, University Health Network, Toronto, ON, Canada
- Department of Medicine and Tanz Centre for Research in Neurodegenerative Diseases, University of Toronto, Toronto, ON, Canada
| | - Joakim Bergström
- Department of Public Health and Caring Sciences/Molecular Geriatrics, Rudbeck Laboratory, Uppsala University, SE-752 37, Uppsala, Sweden
| | - Anna Erlandsson
- Department of Public Health and Caring Sciences/Molecular Geriatrics, Rudbeck Laboratory, Uppsala University, SE-752 37, Uppsala, Sweden.
| |
Collapse
|