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Bacterial Artificial Chromosomes: A Functional Genomics Tool for the Study of Positive-strand RNA Viruses
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Foamy Viruses, Bet, and APOBEC3 Restriction
Ananda Ayyappan Jaguva Vasudevan1, Daniel Becker2, Tom Luedde1
1Clinic for Gastroenterology, Hepatology and Infectiology, Medical Faculty, Heinrich Heine University Düsseldorf, 40225 Düsseldorf, Germany.
Viruses
|April 3, 2021
Summary
Non-human primate foamy viruses (FV) can infect humans but are apathogenic. This review explores how FVs evade host restriction factors, particularly APOBEC3, unlike other retroviruses.
Area of Science:
- Virology
- Immunology
- Zoonotic Diseases
Background:
- Non-human primates (NHP) harbor viruses with zoonotic potential, including foamy viruses (FV).
- Unlike pathogenic retroviruses like HIV-1, FVs are generally apathogenic in humans but can infect NHP and other mammals.
- FV replication differs from other retroviruses, particularly in their ability to overcome host restriction factors.
Purpose of the Study:
- To review current knowledge on foamy virus (FV) biology and host interactions.
- To emphasize FV evasion mechanisms against host restriction factors, especially APOBEC3 (A3).
- To highlight open questions regarding FV-host interactions and the role of the FV Bet protein.
Main Methods:
- Literature review of FV biology, host restriction factors, and FV-host interactions.
- Analysis of known FV replication strategies and evasion mechanisms.
- Focus on the interaction between FV Bet protein and APOBEC3 (A3) restriction factors.
Main Results:
- FVs replicate despite the presence of key retroviral restriction factors like TRIM5α, BST2, MX2, and APOBEC3 (A3).
- FV evasion strategies from A3 restriction are less understood compared to HIV-1.
- The FV Bet protein's interaction with A3s is a key area for understanding FV-host interactions.
Conclusions:
- FV-host interactions, particularly FV evasion of APOBEC3, require further investigation.
- Understanding these mechanisms is crucial for assessing the zoonotic potential of FVs.
- Future research should focus on the molecular details of FV Bet-A3 interactions and their implications.
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