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Glorieux S, Vandekerckhove AP, Goris N, Yang XY, Steukers L, Van de Walle GR, Croubels S, Neyts J, Nauwynck HJ. Evaluation of the antiviral activity of (1'S,2'R)-9-[[1',2'-bis(hydroxymethyl)cycloprop-1'-yl]methyl]guanine (A-5021) against equine herpesvirus type 1 in cell monolayers and equine nasal mucosal explants. Antiviral Res 2011; 93:234-238. [PMID: 22178244 DOI: 10.1016/j.antiviral.2011.11.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Revised: 11/23/2011] [Accepted: 11/30/2011] [Indexed: 11/28/2022]
Abstract
Equine herpesvirus 1 (EHV1) is a ubiquitous equine alphaherpesvirus that causes respiratory disease, neurological symptoms and abortions. Current vaccines are not fully protective and effective therapeutics are lacking. A-5021 [(1'S,2'R)-9-[[1',2'-bis(hydroxymethyl)cycloprop-1'-yl]methyl]guanine], previously shown to possess potent anti-herpetic activity against most human herpesviruses, was evaluated for its potential to inhibit EHV1 replication. In equine embryonic lung (EEL) cells, infected with either a non-neurovirulent (97P70) or a neurovirulent (03P37) EHV1 isolate, A-5021 proved to be about 15-fold more potent than acyclovir in inhibiting viral replication. Moreover, in equine nasal mucosal explants, A-5021 (at 8 and 32μM) was able to completely inhibit viral plaque formation whereas acyclovir did not exert an antiviral effect at these concentrations. Our data demonstrate that A-5021 is a potent inhibitor of EHV1 replication and may have potential for the treatment and/or prophylaxis of infections with this virus.
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Affiliation(s)
- Sarah Glorieux
- Laboratory of Virology, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium.
| | | | - Nesya Goris
- Okapi Sciences NV, Ambachtenlaan 1, 3001 Heverlee, Belgium.
| | - Xiao-Yun Yang
- Laboratory of Virology, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium.
| | - Lennert Steukers
- Laboratory of Virology, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium.
| | - Gerlinde R Van de Walle
- Department of Physiology and Biometrics, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium.
| | - Siska Croubels
- Department of Pharmacology, Toxicology and Biochemistry, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium.
| | - Johan Neyts
- Rega Institute for Medical Research, Department of Microbiology and Immunology, Katholieke Universiteit Leuven, Minderbroederstraat 10, 3000 Leuven, Belgium.
| | - Hans J Nauwynck
- Laboratory of Virology, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium.
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