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10.1016/j.jphotobiol.2021.112319

http://scihub22266oqcxt.onion/10.1016/j.jphotobiol.2021.112319
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suck abstract from ncbi


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pmid34598020      J+Photochem+Photobiol+B 2021 ; 224 (ä): 112319
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  • Solar simulated ultraviolet radiation inactivates HCoV-NL63 and SARS-CoV-2 coronaviruses at environmentally relevant doses #MMPMID34598020
  • Wondrak GT; Jandova J; Williams SJ; Schenten D
  • J Photochem Photobiol B 2021[Nov]; 224 (ä): 112319 PMID34598020show ga
  • The germicidal properties of short wavelength ultraviolet C (UVC) light are well established and used to inactivate many viruses and other microbes. However, much less is known about germicidal effects of terrestrial solar UV light, confined exclusively to wavelengths in the UVA and UVB regions. Here, we have explored the sensitivity of the human coronaviruses HCoV-NL63 and SARS-CoV-2 to solar-simulated full spectrum ultraviolet light (sUV) delivered at environmentally relevant doses. First, HCoV-NL63 coronavirus inactivation by sUV-exposure was confirmed employing (i) viral plaque assays, (ii) RT-qPCR detection of viral genome replication, and (iii) infection-induced stress response gene expression array analysis. Next, a detailed dose-response relationship of SARS-CoV-2 coronavirus inactivation by sUV was elucidated, suggesting a half maximal suppression of viral infectivity at low sUV doses. Likewise, extended sUV exposure of SARS-CoV-2 blocked cellular infection as revealed by plaque assay and stress response gene expression array analysis. Moreover, comparative (HCoV-NL63 versus SARS-CoV-2) single gene expression analysis by RT-qPCR confirmed that sUV exposure blocks coronavirus-induced redox, inflammatory, and proteotoxic stress responses. Based on our findings, we estimate that solar ground level full spectrum UV light impairs coronavirus infectivity at environmentally relevant doses. Given the urgency and global scale of the unfolding SARS-CoV-2 pandemic, these prototype data suggest feasibility of solar UV-induced viral inactivation, an observation deserving further molecular exploration in more relevant exposure models.
  • |*Sunlight[MESH]
  • |*Ultraviolet Rays[MESH]
  • |Animals[MESH]
  • |Cell Line[MESH]
  • |Chlorocebus aethiops[MESH]
  • |Coronavirus Infections/*prevention & control[MESH]
  • |Coronavirus NL63, Human/physiology/*radiation effects[MESH]
  • |Epithelial Cells/virology[MESH]
  • |Genome, Viral/radiation effects[MESH]
  • |Humans[MESH]
  • |Respiratory Tract Infections/*prevention & control[MESH]
  • |SARS-CoV-2/physiology/*radiation effects[MESH]
  • |Transcriptome/radiation effects[MESH]
  • |Viral Plaque Assay[MESH]
  • |Virus Inactivation/radiation effects[MESH]


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