A human circulating immune cell landscape in aging and COVID-19
Protein & Cell
;
(12): 740-770, 2020.
Article
Dans Anglais
| WPRIM
| ID: wpr-828746
ABSTRACT
Age-associated changes in immune cells have been linked to an increased risk for infection. However, a global and detailed characterization of the changes that human circulating immune cells undergo with age is lacking. Here, we combined scRNA-seq, mass cytometry and scATAC-seq to compare immune cell types in peripheral blood collected from young and old subjects and patients with COVID-19. We found that the immune cell landscape was reprogrammed with age and was characterized by T cell polarization from naive and memory cells to effector, cytotoxic, exhausted and regulatory cells, along with increased late natural killer cells, age-associated B cells, inflammatory monocytes and age-associated dendritic cells. In addition, the expression of genes, which were implicated in coronavirus susceptibility, was upregulated in a cell subtype-specific manner with age. Notably, COVID-19 promoted age-induced immune cell polarization and gene expression related to inflammation and cellular senescence. Therefore, these findings suggest that a dysregulated immune system and increased gene expression associated with SARS-CoV-2 susceptibility may at least partially account for COVID-19 vulnerability in the elderly.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Pneumopathie virale
/
Spectrométrie de masse
/
Vieillissement
/
Réarrangement des gènes
/
Lymphocytes T CD4/
/
Cytokines
/
Analyse de séquence d'ARN
/
Infections à coronavirus
/
Régulation de l'expression des gènes au cours du développement
/
Lignage cellulaire
Type d'étude:
Étude pronostique
Limites du sujet:
Adulte
/
Adulte très âgé
/
Aged80
/
Humains
langue:
Anglais
Texte intégral:
Protein & Cell
Année:
2020
Type:
Article
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