Cerebral organoids with chromosome 21 trisomy secrete Alzheimer’s disease-related soluble aggregates detectable by single-molecule-fluorescence and super-resolution microscopy
Open accessAbstract
Understanding the role of small, soluble aggregates of beta-amyloid (Aβ) and tau in Alzheimer’s disease (AD) is of great importance for the rational design of preventative therapies. Here we report a set of methods for the detection, quantification, and characterisation of soluble aggregates in conditioned media of cerebral organoids derived from human iPSCs with trisomy 21, thus containing an extra copy of the amyloid precursor protein (APP) gene. We detected soluble beta-amyloid (Aβ) and tau aggregates secreted by cerebral organoids from both control and the isogenic trisomy 21 (T21) genotype. We developed a novel method to normalise measurements to the number of live neurons within organoid-conditioned media based on glucose consumption. Thus normalised, T21 organoids produced 2.5-fold more Aβ aggregates with a higher proportion of larger (300–2000 nm 2) and more fibrillary-shaped aggregates than controls, along with 1.3-fold more soluble phosphorylated tau (pTau) aggregates, increased inflammasome ASC-specks, and a higher level of oxidative stress inducing thioredoxin-interacting protein (TXNIP). Importantly, all this was detectable prior to the appearance of histological amyloid plaques or intraneuronal tau-pathology in organoid slices, demonstrating the feasibility to model the initial pathogenic mechanisms for AD in-vitro using cells from live genetically pre-disposed donors before the onset of clinical disease. Then, using different iPSC clones generated from the same donor at different times in two independent experiments, we tested the reproducibility of findings in organoids. While there were differences in rates of disease progression between the experiments, the disease mechanisms were conserved. Overall, our results show that it is possible to non-invasively follow the development of pathology in organoid models of AD over time, by monitoring changes in the aggregates and proteins in the conditioned media, and open possibilities to study the time-course of the key pathogenic processes taking place.
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The technique used to quantify soluble Aβ aggregates has previously been validated in multiple studies and specifically detects aggregates, not monomers.
“The technique used to quantify soluble aggregates has previously been validated in multiple studies and has been shown to specifically detect aggregates, and not monomers [29–31].”
From Selective suppression of oligodendrocyte-derived amyloid beta rescues neuronal dysfunction in Alzheimer’s disease (2024) · cites this paper as [30]
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Cited by
Sorted by citations
Rajani, R. M., Ellingford, R., Hellmuth, M., Harris, S. S., Taso, O. S., Graykowski, D., Lam, F. K. W., Arber, C., Fertan, E., Danial, J. S. H., et al. (2024) · PLOS Biology · doi:10.1371/journal.pbio.3002727 · Cited by 57 · see citing works
Self-citation
- Authors
- Fertan, E., Böken, D., Murray, A., Danial, J. S. H., Lam, J. Y. L., Wu, Y., Goh, P. A., Alić, I., Cheetham, M. R., Lobanova, E., Zhang, Y. P., Nižetić, D., & Klenerman, D.
- Affiliations
- University of Cambridge (GB)
- Queen Mary University of London (GB)
- Corresponding author
- Klenerman, David
- ORCID
- Venue
- Molecular Psychiatry
- Published
- 2023-12-15
- Volume
- 29
- Issue
- 2
- Pages
- 369-386
- ISSN
- 1359-4184 (ISSN-L)
- 1476-5578
- PMC
- PMC11116105
- OpenAlex
- W4389816879
- Cited by
- 31
- References
- 16
- Citations by year
- 2026: 9 · 2025: 13 · 2024: 9
- FWCI
- 5.51
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Locations
- Molecular Psychiatry (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- Apollo (University of Cambridge) (submittedVersion, cc-by)
- DR-NTU (Nanyang Technological University) (submittedVersion)
- Queen Mary Research Online (Queen Mary University of London) (submittedVersion, cc-by)
- Apollo (cc-by)
- Funders
- Wellcome Trust (608765, 217199/Z/19/Z)
- European Commission (608765)
- Fondation Jérôme Lejeune
- Croucher Foundation
- UK Dementia Research Institute
- Medical Research Council (608765)
- Topics
- Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
- Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
- Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
- Keywords
- Alzheimer's disease, brain organoids, Down syndrome, amyloid-beta aggregates, tau phosphorylation, amyloid precursor protein, iPSC-derived neurons, conditioned medium, TXNIP, oxidative stress, in vitro disease model, single-molecule fluorescence, super-resolution microscopy
- MeSH terms
- Alzheimer Disease, Brain, Carrier Proteins, Down Syndrome, Humans, Microscopy, Fluorescence, Neurons, Organoids, Trisomy, Amyloid beta-Peptides, Amyloid beta-Protein Precursor, tau Proteins, Culture Media, Conditioned, Oxidative Stress, Induced Pluripotent Stem Cells, Plaque, Amyloid
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Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
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