ArticleCell & bioscience2022
Wasteosomes (corpora amylacea) of human brain can be phagocytosed and digested by macrophages.
Article in Cell & bioscience, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 18 citations in OpenAlex.
- Wasteosomes accumulate in periventricular white matter hyperintensities and exhibit complex relationships with mixed pathology, sclerotic index, and perivascular space.Brain pathology (Zurich, Switzerland) · 2026Article
- Regional wasteosome accumulation across neurodegenerative diseases points to a shared underlying mechanism potentially related to glymphatic insufficiency.Acta neuropathologica communications · 2026Article
- Wasteosomes (corpora amylacea) of the human brain accumulate in CD44-positive astrocytes.iScience · 2026Article
- Cerebrospinal Fluid Sediments as a Novel Tool for Potential Biomarkers of Neurodegenerative Diseases.International journal of molecular sciences · 2026Article
- Mouse brain contains age-dependent extraparenchymal granular structures and astrocytes, both reactive to natural IgM antibodies, linked to the fissura magna.Immunity & ageing : I & A · 2024Article
- Increase in wasteosomes (corpora amylacea) in frontotemporal lobar degeneration with specific detection of tau, TDP-43 and FUS pathology.Acta neuropathologica communications · 2024Article
- Amyloid-Forming Corpora Amylacea and Spheroid-Type Amyloid Deposition: Comprehensive Analysis Using Immunohistochemistry, Proteomics, and a Literature Review.International journal of molecular sciences · 2024Review
- Endothelial cells and macrophages as allies in the healthy and diseased brain.Acta neuropathologica · 2024Review
- Corpora amylacea negatively correlate with hippocampal tau pathology in Alzheimer's disease.Frontiers in neuroscience · 2024Article
- Uncovering tau in wasteosomes (Frontiers in aging neuroscience · 2023Article
- Wasteosomes (Proceedings of the National Academy of Sciences of the United States of America · 2022Article
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Authors and funding
11 authors at 3 institutions in 1 country.
Funding
Abstract
backgroundCorpora amylacea of human brain, recently renamed as wasteosomes, are granular structures that appear during aging and also accumulate in specific areas of the brain in neurodegenerative conditions. Acting as waste containers, wasteosomes are formed by polyglucosan aggregates that entrap and isolate toxic and waste substances of different origins. They are expelled from the brain to the cerebrospinal fluid (CSF), and can be phagocytosed by macrophages. In the present study, we analyze the phagocytosis of wasteosomes and the mechanisms involved in this process. Accordingly, we purified wasteosomes from post-mortem extracted human CSF and incubated them with THP-1 macrophages. Immunofluorescence staining and time-lapse recording techniques were performed to evaluate the phagocytosis. We also immunostained human hippocampal sections to study possible interactions between wasteosomes and macrophages at central nervous system interfaces.
resultsWe observed that the wasteosomes obtained from post-mortem extracted CSF are opsonized by MBL and the C3b complement protein. Moreover, we observed that CD206 and CD35 receptors may be involved in the phagocytosis of these wasteosomes by THP-1 macrophages. Once phagocytosed, wasteosomes become degraded and some of the resulting fractions can be exposed on the surface of macrophages and interchanged between different macrophages. However, brain tissue studies show that, in physiological conditions, CD206 but not CD35 receptors may be involved in the phagocytosis of wasteosomes.
conclusionsThe present study indicates that macrophages have the machinery required to process and degrade wasteosomes, and that macrophages can interact in different ways with wasteosomes. In physiological conditions, the main mechanism involve CD206 receptors and M2 macrophages, which trigger the phagocytosis of wasteosomes without inducing inflammatory responses, thus avoiding tissue damage. However, altered wasteosomes like those obtained from post-mortem extracted CSF, which may exhibit waste elements, become opsonized by MBL and C3b, and so CD35 receptors constitute another possible mechanism of phagocytosis, leading in this case to inflammatory responses.
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