英国MRC分子生物学实验室Madeline A. Lancaster团队发现，SARS-CoV-2感染脑脉络丛并破坏人脑类器官中的血液-脑脊液屏障。该项研究成果于2020年10月13日在线发表在《细胞—干细胞》杂志上。

Title: SARS-CoV-2 infects the brain choroid plexus and disrupts the blood-CSF-barrier in human brain organoids

Author: Laura Pellegrini, Anna Albecka, Donna L. Mallery, Max J. Kellner, David Paul, Andrew P. Carter, Leo C. James, Madeline A. Lancaster

Issue&Volume: 2020-10-13

Abstract: Coronavirus disease-19 (COVID-19), caused by the SARS-CoV-2 virus, leads to respiratory symptoms that can be fatal. However, neurological symptoms have also been observed in some patients. The cause of these complications is currently unknown. Here, we use human pluripotent stem cell-derived brain organoids to examine SARS-CoV-2 neurotropism. We find expression of viral receptor ACE2 in mature choroid plexus cells expressing abundant lipoproteins, but not in neurons or other cell types. We challenge organoids with SARS-CoV-2 spike pseudovirus and live virus to demonstrate viral tropism for choroid plexus epithelial cells, but little to no infection of neurons or glia. We find that infected cells are apolipoprotein and ACE2 expressing cells of the choroid plexus epithelial barrier. Finally, we show that infection with SARS-CoV-2 damages the choroid plexus epithelium, leading to leakage across this important barrier that normally prevents entry of pathogens, immune cells and cytokines into cerebrospinal fluid and the brain.

DOI: 10.1016/j.stem.2020.10.001

Source: https://www.cell.com/cell-stem-cell/fulltext/S1934-5909(20)30495-1