Journal article

Influenza, but not SARS-CoV-2, infection induces a rapid interferon response that wanes with age and diminished tissue-resident memory CD8( ) T cells

Thi HO Nguyen, Julie L McAuley, Youry Kim, Ming ZM Zheng, Nicholas A Gherardin, Dale Godfrey, Damian FJ Purcell, Lucy C Sullivan, Glen P Westall, Patrick C Reading, Katherine Kedzierska, Linda M Wakim

CLINICAL & TRANSLATIONAL IMMUNOLOGY | WILEY | Published : 2021

Abstract

Older individuals exhibit a diminished ability to respond to and clear respiratory pathogens and, as such, experience a higher rate of lung infections with a higher mortality rate. It is unclear why respiratory pathogens impact older people disproportionately. Using human lung tissue from donors aged 22-68 years, we assessed how the immune cell landscape in lungs changes throughout life and investigated how these immune cells respond following in vitro exposure to influenza virus and SARS-CoV-2, two clinically relevant respiratory viruses. While the frequency of most immune cell subsets profiled in the human lung remained stable with age, memory CD8+ T cells declined, with the tissue-residen..

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Grants

Awarded by Australian NHMRC Investigator Fellowship


Awarded by NHMRC EL1 Fellowship


Awarded by Medical Research Future Fund


Funding Acknowledgements

The University of Melbourne acknowledges the support of Melbourne Health, through its Victorian Infectious Diseases Reference Laboratory at the Doherty Institute, in providing our laboratory with isolated SARS-CoV-2 material. This work was supported by National Health and Medical Research Council of Australia (LMW). KK is supported by Australian NHMRC Investigator Fellowship (#1173871) and the University of Melbourne Dame Kate Campbell Fellowship. THON is supported by NHMRC EL1 Fellowship (#1194036). This study was also supported by the Medical Research Future Fund (#2005544). The Melbourne WHO Collaborating Centre for Reference and Research on Influenza is supported by the Australian Government Department of Health.