ArticleAntimicrobial agents and chemotherapy2009
Susceptibilities of human cytomegalovirus clinical isolates and other herpesviruses to new acetylated, tetrahalogenated benzimidazole D-ribonucleosides.
Article in Antimicrobial agents and chemotherapy, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 17 citations in OpenAlex.
- Article
- Hinge Region in DNA Packaging Terminase pUL15 of Herpes Simplex Virus: A Potential Allosteric Target for Antiviral Drugs.Biomolecules · 2019Article
- DSTP-27 prevents entry of human cytomegalovirus.Antimicrobial agents and chemotherapy · 2014Article
- Voluntary ingestion of antiparasitic drugs emulsified in honey represents an alternative to gavage in mice.Journal of the American Association for Laboratory Animal Science : JAALAS · 2012Article
- Isomeric mono-, di-, and tri-bromobenzo-1H-triazoles as inhibitors of human protein kinase CK2α.PloS one · 2012Article
- Cytomegalovirus antivirals and development of improved animal models.Expert opinion on drug metabolism & toxicology · 2011Review
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Authors and funding
5 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Recently we characterized two inhibitors targeting the human cytomegalovirus (HCMV) terminase, 2-bromo-4,5,6-trichloro-1-(2,3,5-tri-O-acetyl-beta-D-ribofuranosyl) benzimidazole (BTCRB) and 2,4,5,6-tetrachloro-1-(2,3,5-tri-O-acetyl-beta-D-ribofuranosyl) benzimidazole (Cl(4)RB). The terminase consists of the ATP-hydrolyzing subunit pUL56 and the subunit pUL89 required for duplex nicking. Because mammalian cell DNA replication does not involve cleavage of concatemeric DNA by a terminase, these compounds represent attractive alternative HCMV antivirals. We now have tested these previously identified benzimidazole ribonucleosides in order to determine if they are active against HCMV clinical isolates as well as those of herpes simplex virus type 1, mouse cytomegalovirus, rat cytomegalovirus (RCMV), and varicella-zoster virus (VZV). Antiviral activity was quantified by measurement of viral plaque formation (plaque reduction) and by viral growth kinetics. Interestingly, both BTCRB and Cl(4)RB had an inhibitory effect in ganciclovir (GCV)-sensitive and GCV-resistant clinical isolates, with the best effect produced by Cl(4)RB. Electron microscopy revealed that in cells infected with GCV-sensitive or GCV-resistant isolates, B capsids and dense bodies were formed mainly. Furthermore, pulsed-field gel electrophoresis showed that cleavage of concatenated DNA was inhibited in clinical isolates. In addition, the antiviral effect on other herpesviruses was determined. Interestingly, in plaque reduction assays, BTCRB was active against all tested herpesviruses. The best effects were observed on VZV- and RCMV-infected cells. These results demonstrate that the new compounds are highly active against GCV-resistant and GCV-sensitive clinical isolates and slightly active against other herpesviruses.
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