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A Human 3D neural assembloid model for SARS-CoV-2 infection

By Joseph G Gleeson, Lu Wang, David Sievert, Alex E. Clark, Hannah Federman, Benjamin D Gastfriend, Eric Shusta, Sean Palecek, Aaron Carlin

Posted 09 Feb 2021
bioRxiv DOI: 10.1101/2021.02.09.430349

Clinical evidence suggests the central nervous system (CNS) is frequently impacted by SARS-CoV-2 infection, either directly or indirectly, although mechanisms remain unclear. Pericytes are perivascular cells within the brain that are proposed as SARS-CoV-2 infection points1. Here we show that pericyte-like cells (PLCs), when integrated into a cortical organoid, are capable of infection with authentic SARS-CoV-2. Prior to infection, PLCs elicited astrocytic maturation and production of basement membrane components, features attributed to pericyte functions in vivo. While traditional cortical organoids showed little evidence of infection, PLCs within cortical organoids served as viral replication hubs, with virus spreading to astrocytes and mediating inflammatory type I interferon transcriptional responses. Therefore, PLC-containing cortical organoids (PCCOs) represent a new assembloid model2 that supports SARS-CoV-2 entry and replication in neural tissue, and PCCOs serve as an experimental model for neural infection.

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