{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,7]],"date-time":"2026-10-07T06:49:10Z","timestamp":1791355750375,"version":"4.3.1"},"reference-count":50,"publisher":"American Society for Microbiology","issue":"21","license":[{"start":{"date-parts":[[2010,11,1]],"date-time":"2010-11-01T00:00:00Z","timestamp":1288569600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.asm.org\/non-commercial-tdm-license"}],"content-domain":{"domain":["journals.asm.org"],"crossmark-restriction":true},"short-container-title":["J Virol"],"published-print":{"date-parts":[[2010,11]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Respiratory viruses exert a heavy toll of morbidity and mortality worldwide. Despite this burden there are few specific treatments available for respiratory virus infections. Since many viruses utilize host cell enzymatic machinery such as protein kinases for replication, we determined whether pharmacological inhibition of kinases could, in principle, be used as a broad antiviral strategy for common human respiratory virus infections. A panel of green fluorescent protein (GFP)-expressing recombinant respiratory viruses, including an isolate of H1N1 influenza virus (H1N1\/Weiss\/43), was used to represent a broad range of virus families responsible for common respiratory infections (\n                    <jats:italic>Adenoviridae<\/jats:italic>\n                    ,\n                    <jats:italic>Paramyxoviridae<\/jats:italic>\n                    ,\n                    <jats:italic>Picornaviridae<\/jats:italic>\n                    , and\n                    <jats:italic>Orthomyxoviridae<\/jats:italic>\n                    ). Kinase inhibitors were screened in a high-throughput assay that detected virus infection in human airway epithelial cells (1HAEo-) using a fluorescent plate reader. Inhibition of p38 mitogen-activated protein kinase (MAPK) signaling was able to significantly inhibit replication by all viruses tested. Therefore, the pathways involved in virus-mediated p38 and extracellular signal-regulated kinase (ERK) MAPK activation were investigated using bronchial epithelial cells and primary fibroblasts derived from MyD88 knockout mouse lungs. Influenza virus, which activated p38 MAPK to approximately 10-fold-greater levels than did respiratory syncytial virus (RSV) in 1HAEo- cells, was internalized about 8-fold faster and more completely than RSV. We show for the first time that p38 MAPK is a determinant of virus infection that is dependent upon MyD88 expression and Toll-like receptor 4 (TLR4) ligation. Imaging of virus-TLR4 interactions showed significant clustering of TLR4 at the site of virus-cell interaction, triggering phosphorylation of downstream targets of p38 MAPK, suggesting the need for a signaling receptor to activate virus internalization.\n                  <\/jats:p>","DOI":"10.1128\/jvi.00804-10","type":"journal-article","created":{"date-parts":[[2010,8,11]],"date-time":"2010-08-11T22:28:22Z","timestamp":1281565702000},"page":"11359-11373","update-policy":"https:\/\/doi.org\/10.1128\/asmj-crossmark-policy-page","source":"Crossref","is-referenced-by-count":153,"title":["Toll-Like Receptor 4-Mediated Activation of p38 Mitogen-Activated Protein Kinase Is a Determinant of Respiratory Virus Entry and Tropism"],"prefix":"10.1128","volume":"84","author":[{"given":"David","family":"Marchant","sequence":"first","affiliation":[{"name":"UBC James Hogg Research Centre, Providence Heart + Lung Institute, Department of Pathology and Laboratory Medicine, University of British 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