期刊
BIOMOLECULES
卷 12, 期 9, 页码 -出版社
MDPI
DOI: 10.3390/biom12091233
关键词
COVID-19; modified nucleosides; LC-MS
资金
- Cooperative Research Project Program of Joint Usage/Research Center at the Institute of Development, Aging and Cancer, Tohoku University
- AMABIE Research Project, Kumamoto University
SARS-CoV-2 infection leads to changes in cellular RNA content, resulting in increased levels of modified nucleosides that serve as biomarkers for COVID-19 infection and severity.
SARS-CoV-2 infection alters cellular RNA content. Cellular RNAs are chemically modified and eventually degraded, depositing modified nucleosides into extracellular fluids such as serum and urine. Here we searched for COVID-19-specific changes in modified nucleoside levels contained in serum and urine of 308 COVID-19 patients using liquid chromatography-mass spectrometry (LC-MS). We found that two modified nucleosides, N-6-threonylcarbamoyladenosine (t(6)A) and 2-methylthio-N-6 -threonylcarbamoyladenosine (ms(2)t(6)A), were elevated in serum and urine of COVID-19 patients. Moreover, these levels were associated with symptom severity and decreased upon recovery from COVID-19. In addition, the elevation of similarly modified nucleosides was observed regardless of COVID-19 variants. These findings illuminate specific modified RNA nucleosides in the extracellular fluids as biomarkers for COVID-19 infection and severity.
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