Journal
ANTIVIRAL RESEARCH
Volume 72, Issue 1, Pages 68-74Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.antiviral.2006.03.017
Keywords
cytomegalovirus; Allium sativum; diallyl trisulfide; cytomegalovirus; immediate-early gene
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Garlic (Allium sativum) extraction has been reported having anti-HCMV efficacy. This study was aimed to investigate the effect of allitridin (diallyl trisulfide, a compound from A. sativum extraction) on the replication of HCMV and the expression of viral immediate-early genes. In HCMV plaque-reduction assay, allitridin appeared a dose-dependent inhibitory ability with EC50 value of 4.2 mu g/ml (selective index, SI = 16.7). Time-of-addition and time-of-removal studies showed that allitridin inhibited HCMV replication in earlier period of viral cycle before viral DNA synthesis. Both immediate early gene (ie1) transcription and IEA (IE(1)72 and IE(2)86) expression was suppressed by allitridin, but not by GCV in a single HCMV cycle format. In addition, allitridin appeared stronger inhibition on IE(2)86 than on IE(1)72. Decrease of viral DNA load in infected cells was also detected under allitridin treatment, probably due to an indirect consequence of the reduction in ie gene transcription. In summary, this study indicated that allitridin has anti-HCMV activity and the mechanism is associated with suppression of ie gene transcription. (c) 2006 Elsevier B.V. All rights reserved.
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