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[Apoptosis and human viral infections]
Annales De Biologie Clinique
|January 1, 1996
Summary
Viruses manipulate programmed cell death (apoptosis) to ensure their survival and replication. Understanding these viral strategies is key to developing effective antiviral therapies and combating viral diseases.
Area of Science:
- Molecular Biology
- Virology
- Immunology
Context:
- Cellular homeostasis relies on a balance between proliferation and apoptosis.
- Viruses have evolved mechanisms to interfere with apoptosis in host cells and immune cells.
- Apoptosis detection methods include DNA fragmentation analysis, flow cytometry, and specific labeling techniques.
Purpose:
- To review viral strategies for modulating apoptosis.
- To explore the role of apoptosis in viral infections and pathogenesis.
- To highlight the implications of apoptosis manipulation for viral persistence and host immunity.
Summary:
- Viruses employ diverse tactics to evade or induce apoptosis, involving viral proteins that target key apoptotic regulators like p53 and Bcl-2.
- Specific viruses like Adenovirus, EBV, HPV, and HIV utilize distinct proteins (e.g., E1A, EBNA-5, E6, gp120) to disrupt apoptotic pathways.
- Viral modulation of apoptosis impacts T-cell activation, immune responses, and can lead to viral persistence, transformation, or immunodeficiency.
Impact:
- Insights into viral apoptosis manipulation can inform the development of novel antiviral therapies.
- Understanding these mechanisms is crucial for managing viral infections and their associated pathologies.
- This knowledge contributes to a deeper understanding of host-pathogen interactions and immune evasion strategies.