DNA damage response at telomeres boosts the transcription of SARS-CoV-2 receptor ACE2 during aging

Sara Sepe, Francesca Rossiello, Valeria Cancila, Fabio Iannelli, Valentina Matti, Giada Cicio, Matteo Cabrini, Eugenia Marinelli, Busola R. Alabi, Alessia di Lillo, Arianna Di Napoli, Jerry W. Shay, Claudio Tripodo, Fabrizio d’Adda di Fagagna

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causes the coronavirus disease 2019 (COVID-19), known to be more common in the elderly, who also show more severe symptoms and are at higher risk of hospitalization and death. Here, we show that the expression of the angiotensin converting enzyme 2 (ACE2), the SARS-CoV-2 cell receptor, increases during aging in mouse and human lungs. ACE2 expression increases upon telomere shortening or dysfunction in both cultured mammalian cells and in vivo in mice. This increase is controlled at the transcriptional level, and Ace2 promoter activity is DNA damage response (DDR)-dependent. Both pharmacological global DDR inhibition of ATM kinase activity and selective telomeric DDR inhibition by the use of antisense oligonucleotides prevent Ace2 upregulation following telomere damage in cultured cells and in mice. We propose that during aging telomere dysfunction due to telomeric shortening or damage triggers DDR activation and this causes the upregulation of ACE2, the SARS-CoV-2 cell receptor, thus contributing to make the elderly more susceptible to the infection.

Original languageEnglish (US)
Article numbere53658
JournalEMBO Reports
Volume23
Issue number2
DOIs
StatePublished - Feb 3 2022

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Genetics

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