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HIV infection and HERV expression: a review
1Laboratory of Experimental Virology, Department of Medical Microbiology, Center for Infection and Immunity Amsterdam, Academic Medical Center of the University of Amsterdam, Meibergdreef 15, 1105 AZ Amsterdam, The Netherlands. a.c.vanderkuyl@amc.uva.nl
Retrovirology
|January 18, 2012
Summary
Human endogenous retroviruses (HERVs) can be expressed during HIV infection. Some HERVs may help control HIV by triggering immune responses against infected cells, potentially aiding vaccine development.
Area of Science:
- Virology
- Immunology
- Genetics
Background:
- The human genome harbors endogenous retroviruses (ERVs), remnants of ancient germline infections.
- Some human endogenous retroviruses (HERVs) retain coding capacity, leading to protein and particle expression.
- Exogenous retroviruses like HIV, absent as endogenous forms in humans, pose significant health risks.
Purpose of the Study:
- To review potential interactions between HIV and HERVs.
- To explore the influence of HERV expression on HIV-AIDS disease progression.
- To discuss the implications of HERV-HIV interactions for therapeutic strategies.
Main Methods:
- Literature review of studies on HIV-HERV interactions.
- Analysis of HERV expression patterns in HIV-infected individuals.
- Investigation of immune responses to HERV-derived peptides.
Main Results:
- HERV proteins are unlikely to complement or be packaged by HIV due to sequence dissimilarities.
- HERV expression in HIV-infected patients can lead to HERV peptide presentation to CD8+ T-cells.
- These T-cells can lyse HIV-infected cells presenting HERV peptides, potentially reducing viral load.
Conclusions:
- HIV infection can induce HERV expression, creating a novel host defense mechanism.
- HERV-specific cytotoxic T-cell responses may play a role in controlling HIV replication.
- HERV-derived peptides represent a potential avenue for developing HIV vaccination strategies.
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