Smallpox was declared eradicated in 1980. However recently, the need of agents effective against poxvirus infection has emerged again. In this paper, we report an original finding that two redox-modulating agents, the ethacrynic and alpha-lipoic acids (EA, LA), inhibit growth of vaccinia virus (VACV) in vitro. The effect of EA and LA was compared with those of beta-mercaptoethanol, DTT and ascorbic acid, but these agents increased VACV growth in HeLa G cells. The inhibitory effects of EA and LA on the growth of VACV were further confirmed in several cell lines of different embryonic origin, in epithelial cells, fibroblasts, macrophages and T-lymphocytes. Finally, we have analyzed the mechanism of action of the two agents. They both decreased expression of VACV late genes, as demonstrated by western blot analysis and activity of luciferase expressed under control of different VACV promoters. In contrast, they did not inhibit virus entry into the cell, expression of VACV early genes or VACV DNA synthesis. The results suggest new directions in development of drugs effective against poxvirus infection.

• MeSH
• antivirové látky farmakologie   MeSH
• exprese genu účinky léků   MeSH
• HeLa buňky MeSH
• kultivované buňky MeSH
• kyselina ethakrynová farmakologie   MeSH
• kyselina lipoová farmakologie   MeSH
• lidé MeSH
• luciferasy metabolismus   MeSH
• plakové testy MeSH
• replikace viru účinky léků   MeSH
• reportérové geny MeSH
• virus vakcinie účinky léků   růst a vývoj   MeSH
• western blotting MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• srovnávací studie MeSH
• Názvy látek
• antivirové látky MeSH
• kyselina ethakrynová MeSH
• kyselina lipoová MeSH
• luciferasy MeSH