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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

Inhibition of poliovirus uncoating by disoxaril (WIN 51711).

Disoxaril [WIN 51711, 5-[7-[4(4,5-dihydro-2-oxazolyl)phenoxy]heptyl]-3- methylisoxazole] inhibits the replication of polioviruses types 1 and 2 in HeLa cells by stabilizing the virus capsid, which results in the inhibition of the pH-dependent viral uncoating in endosomes and/or lysosomes. As shown by electron microscopy the virus entered into the cell by receptor-mediated endocytosis via coated pits and coated vesicles into endosomes irrespective of the presence or absence of the compound. Measurements of viral RNA synthesis showed that disoxaril completely inhibited the arrival of viral RNA in the cytoplasm for new RNA synthesis only when the inocula were preincubated with disoxaril for 15 min at 37 degrees at 0.3 microgram disoxaril/ml for poliovirus type 1 and 0.03 microgram disoxaril/ml for poliovirus type 2. Simultaneous addition of the compound and virus resulted in reduced inhibition of viral RNA synthesis. The inhibitory effect of the compound could be partially reversed up to 25 min p.i. if the compound was eluted from the cells.[1]

References

  1. Inhibition of poliovirus uncoating by disoxaril (WIN 51711). Zeichhardt, H., Otto, M.J., McKinlay, M.A., Willingmann, P., Habermehl, K.O. Virology (1987) [Pubmed]
 
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