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Poxviruses and apoptosis: a time to die
Helen Everett1, Grant McFadden
1Department of Biochemistry, University of Alberta, 4-63 Medical Sciences Building, Edmonton, T6G 2H7, Alberta, Canada. heverett@biochem.ualberta.ca
Current Opinion in Microbiology
|August 6, 2002
Summary
Poxviruses encode diverse apoptosis inhibitors that target host cell death pathways. These viral proteins function as inhibitors, highlighting complex host-pathogen interactions during infection.
Area of Science:
- Virology
- Molecular Biology
- Cell Biology
Background:
- Apoptosis, or programmed cell death, is a critical cellular process.
- Poxviruses are large DNA viruses known to manipulate host cell functions.
- Viral interference with apoptosis is a common strategy for pathogen survival and replication.
Purpose of the Study:
- To review and categorize known apoptosis modulators encoded by poxviruses.
- To understand the diversity of mechanisms employed by these viral inhibitors.
- To identify the specific host proteins targeted by poxvirus-encoded apoptosis modulators.
Main Methods:
- Literature review of published studies on poxvirus apoptosis modulators.
- Analysis of reported mechanisms of action for viral proteins.
- Comparison of targeted host proteins across different poxvirus species.
Main Results:
- All identified poxvirus-encoded apoptosis modulators function as inhibitors.
- These inhibitors exhibit diverse mechanistic classes.
- Individual poxviruses target a wide array of host proteins within cellular apoptotic pathways.
Conclusions:
- Poxviruses possess a sophisticated arsenal of apoptosis inhibitors.
- The diversity of inhibitors suggests convergent or divergent evolutionary strategies for subverting host cell death.
- Understanding these interactions is crucial for comprehending poxvirus pathogenesis.