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10.1016/j.jphotobiol.2021.112357

http://scihub22266oqcxt.onion/10.1016/j.jphotobiol.2021.112357
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suck abstract from ncbi


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pmid34798503      J+Photochem+Photobiol+B 2022 ; 226 (ä): 112357
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  • Ultraviolet-A light increases mitochondrial anti-viral signaling protein in confluent human tracheal cells via cell-cell signaling #MMPMID34798503
  • Leite G; Rezaie A; Mathur R; Barlow GM; Melmed GY; Pimentel M
  • J Photochem Photobiol B 2022[Jan]; 226 (ä): 112357 PMID34798503show ga
  • Mitochondrial antiviral signaling (MAVS) protein mediates innate antiviral responses, including responses to certain coronaviruses such as severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). We have previously shown that ultraviolet-A (UVA) therapy can prevent virus-induced cell death in human ciliated tracheal epithelial cells (HTEpC) infected with coronavirus-229E (CoV-229E), and results in increased intracellular levels of MAVS. In this study, we explored the mechanisms by which UVA light can activate MAVS, and whether local UVA light application can activate MAVS at locations distant from the light source (e.g. via cell-to-cell communication). MAVS levels were compared in HTEpC exposed to 2 mW/cm(2) narrow band (NB)-UVA for 20 min and in unexposed controls at 30-40% and at 100% confluency, and in unexposed HTEpC treated with supernatants or lysates from UVA-exposed cells or from unexposed controls. MAVS was also assessed in different sections of confluent monolayer plates where only one section was exposed to NB-UVA. Our results showed that UVA increases the expression of MAVS protein. Further, cells in a confluent monolayer exposed to UVA conferred an elevation in MAVS in cells adjacent to the exposed section, and also in cells in the most distant sections which were not exposed to UVA. In this study, human ciliated tracheal epithelial cells exposed to UVA demonstrate increased MAVS protein, and also appear to transmit this influence to confluent cells not exposed to UVA, likely via cell-cell signaling.
  • |*Ultraviolet Rays[MESH]
  • |Adaptor Proteins, Signal Transducing/immunology/*metabolism/*radiation effects[MESH]
  • |COVID-19/immunology/radiotherapy/virology[MESH]
  • |Cell Communication/immunology/radiation effects[MESH]
  • |Cells, Cultured[MESH]
  • |Epithelial Cells/immunology/radiation effects[MESH]
  • |Host Microbial Interactions/immunology/radiation effects[MESH]
  • |Humans[MESH]
  • |Immunity, Innate/radiation effects[MESH]
  • |Photobiology[MESH]
  • |SARS-CoV-2/immunology/pathogenicity[MESH]
  • |Signal Transduction/immunology/radiation effects[MESH]
  • |Trachea/cytology[MESH]


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