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A time to kill: viral manipulation of the cell death program
Stewart Hay1, George Kannourakis1
1The Fiona Elsey Cancer Research Laboratory, Cancer Research Centre, School of Science, University of Ballarat, St John of God Hospital, 1002 Mair Street, Ballarat, Victoria 3350, Australia1.
Abstract:
Many viruses have as part of their arsenal the ability to modulate the apoptotic pathways of the host. It is counter-intuitive that such simple organisms would be efficient at regulating this the most crucial pathway within the host, given the relative complexity of the host cells. Yet, viruses have the potential to initiate or stay the onset of programmed cell death through the manipulation of a variety of key apoptotic proteins. It is the intention of this review to provide an overview of viral gene products that are able to promote or inhibit apoptotic death of the host cell and to discuss their mechanisms of action. It is not until recently that the depth at which viruses exploit the apoptotic pathways of their host has been seen. This understanding may provide a great opportunity for future therapeutic ventures.
Insights
Viruses can control host cell death (apoptosis) by manipulating key proteins. Understanding these viral strategies offers potential for new antiviral therapies.
Area of Science:
- Virology
- Molecular Biology
- Cell Biology
Background:
- Viruses possess mechanisms to interfere with host cell apoptosis.
- Host cell apoptosis is a critical defense pathway.
- Viral manipulation of apoptosis is complex and not fully understood.
Purpose of the Study:
- To review viral gene products that modulate host cell apoptosis.
- To discuss the mechanisms by which viruses control programmed cell death.
- To highlight the therapeutic potential of understanding viral apoptotic interference.
Main Methods:
- Literature review of viral gene products affecting apoptosis.
- Analysis of mechanisms of viral manipulation of apoptotic proteins.
- Synthesis of current understanding of virus-host interactions in apoptosis.
Main Results:
- Viruses utilize diverse strategies to promote or inhibit apoptosis.
- Specific viral proteins target key components of the apoptotic cascade.
- Recent research reveals the intricate depth of viral exploitation of host apoptotic pathways.
Conclusions:
- Viral modulation of apoptosis is a significant aspect of virus-host interactions.
- Understanding these viral mechanisms is crucial for developing novel therapeutics.
- Targeting viral interference with apoptosis may offer new avenues for antiviral drug development.