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- Title
Carnosic Acid Inhibits Herpes Simplex Virus Replication by Suppressing Cellular ATP Synthesis.
- Authors
Horváth, Georgina; Molnár, Edit; Szabó, Zoltán; Kecskeméti, Gábor; Juhász, László; Tallósy, Szabolcs Péter; Nyári, József; Bogdanov, Anita; Somogyvári, Ferenc; Endrész, Valéria; Burián, Katalin; Virok, Dezső P.
- Abstract
Acquiring resistance against antiviral drugs is a significant problem in antimicrobial therapy. In order to identify novel antiviral compounds, the antiviral activity of eight plants indigenous to the southern region of Hungary against herpes simplex virus-2 (HSV-2) was investigated. The plant extracts and the plant compound carnosic acid were tested for their effectiveness on both the extracellular and intracellular forms of HSV-2 on Vero and HeLa cells. HSV-2 replication was measured by a direct quantitative PCR (qPCR). Among the tested plant extracts, Salvia rosmarinus (S. rosmarinus) exhibited a 90.46% reduction in HSV-2 replication at the 0.47 μg/mL concentration. Carnosic acid, a major antimicrobial compound found in rosemary, also demonstrated a significant dose-dependent inhibition of both extracellular and intracellular forms of HSV-2. The 90% inhibitory concentration (IC90) of carnosic acid was between 25 and 6.25 μg/mL. Proteomics and high-resolution respirometry showed that carnosic acid suppressed key ATP synthesis pathways such as glycolysis, citrate cycle, and oxidative phosphorylation. Inhibition of oxidative phosphorylation also suppressed HSV-2 replication up to 39.94-fold. These results indicate that the antiviral action of carnosic acid includes the inhibition of ATP generation by suppressing key energy production pathways. Carnosic acid holds promise as a potential novel antiviral agent against HSV-2.
- Subjects
HUNGARY; CARNOSIC acid; HERPES simplex virus; VIRAL replication; HERPES simplex; HUMAN herpesvirus 2; ADENOSINE triphosphate; CUCUMBER mosaic virus
- Publication
International Journal of Molecular Sciences, 2024, Vol 25, Issue 9, p4983
- ISSN
1661-6596
- Publication type
Article
- DOI
10.3390/ijms25094983