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The DNA glycosylase NEIL2 is protective during SARS-CoV-2 infection

Journal Article · · Nature Communications
 [1];  [1];  [2];  [1];  [1];  [3];  [4];  [5];  [6];  [6];  [6];  [7];  [1];  [1];  [1];  [8];  [3];  [6];  [9];  [4] more »;  [10];  [1];  [1] « less
  1. University of Texas Medical Branch, Galveston, TX (United States)
  2. SRM University-AP, Andhra Pradesh (India); University of California, San Diego, La Jolla, CA (United States)
  3. Baylor College of Medicine, Houston, TX (United States)
  4. University of Massachusetts-Lowell, MA (United States); University of California, San Diego, CA (United States)
  5. UC San Diego Medical Center, La Jolla, CA (United States)
  6. University of California San Diego, La Jolla, CA (United States)
  7. Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
  8. University of California, San Diego, CA (United States)
  9. University of California, San Diego, La Jolla, CA (United States)
  10. University of California San Diego, La Jolla, CA (United States); University of California, San Diego, CA (United States)

SARS-CoV-2 infection-induced aggravation of host innate immune response not only causes tissue damage and multiorgan failure in COVID-19 patients but also induces host genome damage and activates DNA damage response pathways. To test whether the compromised DNA repair capacity of individuals modulates the severity of COVID-19 infection, we analyze DNA repair gene expression in publicly available patient datasets and observe a lower level of the DNA glycosylase NEIL2 in the lungs of severely infected COVID-19 patients. This observation of lower NEIL2 levels is further validated in infected patients, hamsters and ACE2 receptor-expressing human A549 (A549-ACE2) cells. Furthermore, delivery of recombinant NEIL2 in A549-ACE2 cells shows decreased expression of proinflammatory genes and viral E-gene, as well as lowers the yield of viral progeny compared to mock-treated cells. Mechanistically, NEIL2 cooperatively binds to the 5’-UTR of SARS-CoV-2 genomic RNA to block viral protein synthesis. Collectively, these data strongly suggest that the maintenance of basal NEIL2 levels is critical for the protective response of hosts to viral infection and disease.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE; National Institutes for Health; US National Institute of Allergic and Infectious Diseases; US Department of Defense
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
2470867
Journal Information:
Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 14; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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