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- W2885502802 abstract "Respiratory syncytial virus (RSV) is a leading cause of mortality in infants and young children. Despite the RSV disease burden, no vaccine is available, and treatment remains nonspecific. New drug candidates are needed to combat RSV. Toward this goal, we screened over 2,000 compounds to identify approved drugs with novel anti-RSV activity. Cardiac glycosides, inhibitors of the membrane-bound Na+/K+-ATPase, were identified to have anti-RSV activity. Cardiac glycosides diminished RSV infection in human epithelial type 2 cells and in primary human airway epithelial cells grown at an air–liquid interface. Digoxin, a U.S. Food and Drug Administration–approved cardiac glycoside, was also able to inhibit infection of primary nasal epithelial cells with community isolates of RSV. Our results suggest that the antiviral effects of cardiac glycosides may be dependent on changes in the intracellular Na+ and K+ composition. Consistent with this mechanism, we demonstrated that the ionophoric antibiotics salinomycin, valinomycin, and monensin inhibited RSV in human epithelial type 2 cells and primary nasal epithelial cells. Our data indicate that the K+/Na+-sensitive steps in the RSV life cycle occur within the initial 4 hours of viral infection but do not include virus binding/entry. Rather, our findings demonstrated a negative effect on the RSV transcription and/or replication process. Overall, this work suggests that targeting intracellular ion concentrations offers a novel antiviral strategy." @default.
- W2885502802 created "2018-08-22" @default.
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- W2885502802 date "2018-12-01" @default.
- W2885502802 modified "2023-09-26" @default.
- W2885502802 title "Targeting Intracellular Ion Homeostasis for the Control of Respiratory Syncytial Virus" @default.
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- W2885502802 doi "https://doi.org/10.1165/rcmb.2017-0345oc" @default.
- W2885502802 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30095982" @default.
- W2885502802 hasPublicationYear "2018" @default.
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