Related Experiment Videos
Hepatitis C virus-host interactions: the NS5A protein and the interferon/chemokine systems
Khalid S A Khabar1, Stephen J Polyak
1Department of Biological and Medical Research, King Faisal Specialist Hospital and Research Centre, Riyadh, Kingdom of Saudi Arabia.
Insights
Viral proteins interacting with host factors influence virus replication and disease. This review examines hepatitis C virus (HCV) nonstructural 5A (NS5A) protein interactions with host factors and the chemokine system.
Area of Science:
- Virology
- Immunology
- Hepatology
Background:
- Viral proteins interact with host factors, impacting viral replication, persistence, and pathogenesis.
- Hepatitis C virus (HCV) infects 3% of the global population, causing significant liver disease.
- HCV-host interactions influence the efficacy of interferon (IFN) antiviral therapy.
Purpose of the Study:
- To review the interactions between viral proteins and host factors.
- To focus on the hepatitis C virus (HCV) nonstructural 5A (NS5A) protein as a model for virus-host interactions.
- To highlight the interplay between viruses, including HCV, and the chemokine system.
Main Methods:
- Literature review of viral-host interactions.
- Focus on the role of HCV NS5A protein.
- Analysis of virus-chemokine system interactions.
Main Results:
- HCV NS5A protein is a key player in modulating host cellular processes.
- HCV-host interactions, particularly involving NS5A, affect viral pathogenesis and treatment outcomes.
- Viruses utilize and interact with the host chemokine system for their lifecycle.
Conclusions:
- Understanding HCV-NS5A interactions with host factors is crucial for developing effective therapies.
- The chemokine system represents a significant target for antiviral strategies against HCV and other viruses.
- HCV-host interactions provide insights into broader viral pathogenesis and host immune responses.
Abstract:
The interactions that occur between viral proteins and host factors, such as cellular proteins and signal transduction machinery, have a significant influence on the replication, persistence, and pathogenesis of all viruses. This is exemplified by hepatitis C virus (HCV), which infects an estimated 3% of the world's population and is a significant cause of liver disease. HCV-host interactions also affect the outcome of interferon (IFN) antiviral therapy, which is effective only in certain patients. In this review, we focus on the HCV nonstructural 5A (NS5A) protein, a model for diverse virus-host interactions, and highlight the interaction of viruses, including HCV, with the chemokine system.