Article ; Online: SARS-CoV-2 promotes microglial synapse elimination in human brain organoids.
2022 Volume 27, Issue 10, Page(s) 3939–3950
Abstract: Neuropsychiatric manifestations are common in both the acute and post-acute phase of SARS-CoV-2 infection, but the mechanisms of these effects are unknown. In a newly established brain organoid model with innately developing microglia, we demonstrate ... ...
Abstract | Neuropsychiatric manifestations are common in both the acute and post-acute phase of SARS-CoV-2 infection, but the mechanisms of these effects are unknown. In a newly established brain organoid model with innately developing microglia, we demonstrate that SARS-CoV-2 infection initiate neuronal cell death and cause a loss of post-synaptic termini. Despite limited neurotropism and a decelerating viral replication, we observe a threefold increase in microglial engulfment of postsynaptic termini after SARS-CoV-2 exposure. We define the microglial responses to SARS-CoV-2 infection by single cell transcriptomic profiling and observe an upregulation of interferon-responsive genes as well as genes promoting migration and synapse engulfment. To a large extent, SARS-CoV-2 exposed microglia adopt a transcriptomic profile overlapping with neurodegenerative disorders that display an early synapse loss as well as an increased incident risk after a SARS-CoV-2 infection. Our results reveal that brain organoids infected with SARS-CoV-2 display disruption in circuit integrity via microglia-mediated synapse elimination and identifies a potential novel mechanism contributing to cognitive impairments in patients recovering from COVID-19. |
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MeSH term(s) | Humans ; SARS-CoV-2 ; Organoids ; Microglia ; COVID-19 ; Brain ; Presynaptic Terminals |
Language | English |
Publishing date | 2022-10-05 |
Publishing country | England |
Document type | Journal Article ; Research Support, Non-U.S. Gov't |
ZDB-ID | 1330655-8 |
ISSN | 1476-5578 ; 1359-4184 |
ISSN (online) | 1476-5578 |
ISSN | 1359-4184 |
DOI | 10.1038/s41380-022-01786-2 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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