Local and systemic responses to SARS-CoV-2 infection in children and adults

Masahiro Yoshida, Kaylee B. Worlock, Ni Huang, Rik G. H. Lindeboom, Colin R. Butler, Natsuhiko Kumasaka, Cecilia Dominguez Conde, Lira Mamanova, Liam Bolt, Laura Richardson, Krzysztof Polanski, Elo Madissoon, Josephine L. Barnes, Jessica Allen-Hyttinen, Eliz Kilich, Brendan C. Jones, Angus de Wilton, Anna Wilbrey-Clark, Waradon Sungnak, J. Patrick Pett, Juliane Weller, Elena Prigmore, Henry Yung, Puja Mehta, Aarash Saleh, Anita Saigal, Vivian Chu, Jonathan M. Cohen, Clare Cane, Aikaterini Iordanidou, Soichi Shibuya, Ann-Kathrin Reuschl, Iván T. Herczeg, A. Christine Argento, Richard G. Wunderink, Sean B. Smith, Taylor A. Poor, Catherine A. Gao, Jane E. Dematte, NU SCRIPT Study Investigators, Gary Reynolds, Muzlifah Haniffa, Georgina S. Bowyer, Matthew Coates, Menna R. Clatworthy, Fernando J. Calero-Nieto, Berthold Göttgens, Christopher O’Callaghan, Neil J. Sebire, Clare Jolly, Paolo De Coppi, Claire M. Smith, Alexander V. Misharin, Sam M. Janes, Sarah A. Teichmann, Marko Z. Nikolić, Kerstin B. Meyer

Abstract

It is not fully understood why COVID-19 is typically milder in children1,2,3. Here, to examine the differences between children and adults in their response to SARS-CoV-2 infection, we analysed paediatric and adult patients with COVID-19 as well as healthy control individuals (total n = 93) using single-cell multi-omic profiling of matched nasal, tracheal, bronchial and blood samples. In the airways of healthy paediatric individuals, we observed cells that were already in an interferon-activated state, which after SARS-CoV-2 infection was further induced especially in airway immune cells. We postulate that higher paediatric innate interferon responses restrict viral replication and disease progression. The systemic response in children was characterized by increases in naive lymphocytes and a depletion of natural killer cells, whereas, in adults, cytotoxic T cells and interferon-stimulated subpopulations were significantly increased. We provide evidence that dendritic cells initiate interferon signalling in early infection, and identify epithelial cell states associated with COVID-19 and age. Our matching nasal and blood data show a strong interferon response in the airways with the induction of systemic interferon-stimulated populations, which were substantially reduced in paediatric patients. Together, we provide several mechanisms that explain the milder clinical syndrome observed in children.

Datasets

1. PBMC
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Local and systemic responses to SARS-CoV-2 infection in children and adults
2. Airway
Metadata
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Local and systemic responses to SARS-CoV-2 infection in children and adults

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Source data

https://cellxgene.cziscience.com/collections/03f821b4-87be-4ff4-b65a-b5fc00061da7

Alias names

GSE168215, EGAD00001007718, PMID34937051 PMC8828466

Cite this study

Yoshida, M., Worlock, K.B., Huang, N., Lindeboom, R.G., Butler, C.R., Kumasaka, N., Dominguez Conde, C., Mamanova, L., Bolt, L., Richardson, L. and Polanski, K., 2022. Local and systemic responses to SARS-CoV-2 infection in children and adults. Nature, 602(7896), pp.321-327. https://doi.org/10.1038/s41586-021-04345-x