An HIV Feedback Resistor: Auto-Regulatory Circuit Deactivator and Noise Buffer
2007
How HIV Stays Dormant
publication
Evidence: moderate
Author Information
Author(s): Leor Weinberger, Thomas Shenk
Hypothesis
Can HIV regulate its latency through a feedback resistor mechanism?
Conclusion
The study suggests that HIV uses a feedback resistor mechanism to maintain its dormant state and prevent premature activation.
Supporting Evidence
- The model predicted that Tat activation could occur briefly after transcription but would not disrupt latency.
- Cell culture experiments confirmed the role of Tat acetylation in controlling viral dormancy.
- The feedback resistor model was shown to be more effective at resisting environmental fluctuations than other models.
Takeaway
HIV has a special switch that helps it stay quiet and not wake up too soon, even when there are signals around it.
Methodology
The authors used mathematical modeling and cell culture experiments to study the behavior of the Tat protein in HIV.
Digital Object Identifier (DOI)
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