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Licking latency with licorice
1Medical Virology Section, Laboratory of Clinical Infectious Diseases, NIH, Bethesda, Maryland 20892, USA. jcohen@niaid.nih.gov
Abstract:
Numerous viruses cause latent infections in humans, and reactivation often results in pain and suffering. While vaccines for several of these viruses are available or currently being studied in clinical trials, and antiviral therapies have been successful in preventing or treating active infection, therapy to eradicate latent infection has lagged behind. A new study reported in this issue of the JCI shows that treatment of cells latently infected with Kaposi sarcoma-associated herpesvirus (KSHV) with glycyrrhizic acid, a component of licorice, reduces synthesis of a viral latency protein and induces apoptosis of infected cells. This finding suggests a novel way to interrupt latency.
Insights
Glycyrrhizic acid, from licorice, shows promise in treating latent Kaposi sarcoma-associated herpesvirus (KSHV) infections. This compound reduced viral protein synthesis and induced cell death in infected cells, offering a new approach to interrupt viral latency.
Area of Science:
- Virology
- Molecular Biology
- Immunology
Background:
- Many viruses establish latent infections in humans, leading to chronic illness and suffering.
- Current treatments focus on managing active infections or preventing reactivation, but eradicating latent viruses remains a challenge.
- Kaposi sarcoma-associated herpesvirus (KSHV) is a significant cause of latent infection with limited therapeutic options for eradication.
Discussion:
- This study investigates the potential of glycyrrhizic acid, a natural compound from licorice, as a therapeutic agent against latent KSHV infection.
- Glycyrrhizic acid demonstrated the ability to decrease the synthesis of a key viral latency protein.
- The treatment also effectively induced apoptosis (programmed cell death) in KSHV-infected cells.
Key Insights:
- Glycyrrhizic acid disrupts the maintenance of KSHV latency by inhibiting viral protein production.
- The compound triggers the elimination of latently infected cells, suggesting a direct antiviral effect.
- This research identifies a novel therapeutic strategy targeting latent viral reservoirs.
Outlook:
- Further research is needed to explore the efficacy and safety of glycyrrhizic acid in preclinical and clinical settings.
- This approach could potentially be extended to other human herpesviruses that establish latent infections.
- Developing therapies to eradicate latent viral infections is crucial for improving patient outcomes and reducing disease burden.
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