ArticleActa neuropathologica2025
SARS-CoV-2 infection of human cortical cells is influenced by the interaction between aneuploidy and biological sex: insights from a Down syndrome in vitro model.
Article in Acta neuropathologica, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Cerebrospinal fluid and frontal cortex TMPRSS2 and ACE2 protein levels differ in Down syndrome and Alzheimer's disease.Acta neuropathologica communications · 2026Article
- MX1 is a novel crucial prognostic and therapeutic target inducing chemoresistance in right-sided colon cancer: insights from machine learning-based multi-omics analysis.Human genomics · 2025Article
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Authors and funding
15 authors.
Funding
Abstract
Individuals with Down Syndrome (DS) represent one of the most susceptible populations for developing severe COVID-19, and a unique human genetic condition for investigating molecular mechanisms underlying susceptibility of neurologically vulnerable individuals to SARS-CoV-2 infection. Human Chromosome-21 (HSA21) triplication in DS causes global transcriptional deregulation, affecting multiple genes that may directly (e.g., TMPRSS2) or indirectly influence the SARS-CoV-2 entry into central nervous system (CNS) cells. The anti-viral immune response may also be altered in cells with trisomy-21 (T21) due to triplication of genes encoding for several interferon receptor subunits and interferon-stimulated genes (ISGs). Here, we demonstrate that human cells derived from fetal cortical specimens and maintained in primary cultures are susceptible to infection with a molecular clone of vesicular stomatitis virus engineered to express the Spike protein of SARS-CoV-2 (VSV-eGFP-SARS-CoV-2) and to authentic SARS-CoV-2. The level of SARS-CoV-2 infectivity in cultures originated from different cortical specimens varied, seemingly depending on ploidy and chromosomal sex of the cells. We confirmed the presence of ACE2 and TMPRSS2 in cultures and found that XY T21 group had the highest TMPRSS2 mRNA levels, which was associated with increased infectivity in XY-compared to XX T21 cultures. The XX T21 cultures exhibited elevated expression of several ISGs (MX1, STAT1, and STAT2) which was associated with lower infectivity. The comparisons of postmortem aged brain specimens revealed reduced ACE2, TMPRSS2, but elevated STAT2 protein levels in individuals with DS and Alzheimer's disease (DS-AD) compared to control and Alzheimer's disease (AD) group. Collectively, these results suggest multifactorial regulation of SARS-CoV-2 infectivity in cortical cells that involves ploidy, chromosomal sex, and the expression of genes implicated in regulation of virus entry and anti-viral response as contributing factors.
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