SARS-CoV-2 Infects the Brain Choroid Plexus and Disrupts the Blood-CSF Barrier in Human Brain Organoids.

SARS-CoV-2 Infects the Brain Choroid Plexus and Disrupts the Blood-CSF Barrier in Human Brain Organoids.
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DOI:
10.1016/j.stem.2020.10.001
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发表时间:
2020-12-03
期刊:
影响因子:
23.9
通讯作者:
Lancaster MA
Lancaster MA
中科院分区:
医学1区
文献类型:
--
作者:
Pellegrini L;Albecka A;Mallery DL;Kellner MJ;Paul D;Carter AP;James LC;Lancaster MA

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由严重急性呼吸系统综合征冠状病毒2 (SARS-CoV-2)病毒引起的2019冠状病毒病(COVID-19)可导致致命的呼吸道症状。然而,在一些患者中也观察到神经系统症状。这些并发症的原因目前尚不清楚。在这里,我们使用人类多能干细胞衍生的脑类器官来检查SARS-CoV-2的嗜神经性。我们发现病毒受体ACE2在成熟脉络膜丛细胞中表达丰富的脂蛋白,但在神经元或其他细胞类型中不表达。我们用SARS-CoV-2刺突假病毒和活病毒挑战类器官,以证明病毒对脉络膜丛上皮细胞的趋向性,但很少或没有感染神经元或胶质细胞。我们发现受感染的细胞是脉络膜丛上皮屏障的载脂蛋白和ace2表达细胞。最后,我们发现SARS-CoV-2感染会破坏脉络膜丛上皮,导致这一重要屏障渗漏,而这一屏障通常会阻止病原体、免疫细胞和细胞因子进入脑脊液和大脑。更成熟的产脂ChP细胞可能更容易受到SARS-CoV-2感染SARS-CoV-2可有效感染ChP,但不会感染神经元,在类器官中SARS-CoV-2感染可损伤ChP上皮,导致这一脑屏障渗漏,越来越多的报道显示COVID-19患者出现神经系统症状,但SARS-CoV-2是否可直接损伤神经元尚不清楚。兰卡斯特及其同事利用脑类器官研究病毒嗜神经性,发现SARS-CoV-2不会显著感染神经元,但会有效感染脉络膜丛,导致这一脑屏障受损。
Coronavirus disease 2019 (COVID-19), caused by the severe acute respiratory syndrome coronavirus 2 (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. SARS-CoV-2 entry factors are expressed in choroid plexus (ChP) cells More mature lipid-producing ChP cells could be more susceptible to SARS-CoV-2 infection SARS-CoV-2 productively infects ChP, but not neurons, in organoids SARS-CoV-2 infection damages the ChP epithelium, causing leakage of this brain barrier Increasing reports show neurological symptoms in COVID-19 patients, but it is still unclear whether SARS-CoV-2 can directly damage neurons. Lancaster and colleagues investigate viral neurotropism using brain organoids and discover that SARS-CoV-2 does not significantly infect neurons but productively infects choroid plexus, leading to damage of this brain barrier.
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期刊: Science (New York, N.Y.)
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