HuR's Role in HIV-1 Reverse Transcription
Author Information
Author(s): Lemay Julie, Maidou-Peindara Priscilla, Bader Thomas, Ennifar Eric, Rain Jean-Christophe, Benarous Richard, Liu Lang Xia
Primary Institution: Institut Cochin, Université Paris Descartes, CNRS (UMR8104), Paris, France
Hypothesis
Does the RNA-binding protein HuR interact with HIV-1 reverse transcriptase and modulate reverse transcription in infected cells?
Conclusion
HuR interacts with HIV-1 reverse transcriptase and is essential for the reverse transcription process, but does not bind directly to HIV-1 RNA.
Supporting Evidence
- HIV-1 reverse transcription is impaired when HuR is silenced.
- HuR interacts directly with the RNase H domain of HIV-1 reverse transcriptase.
- Overexpression of HuR increases the levels of reverse transcription products.
- HuR does not bind to HIV-1 RNA, indicating its role is through protein-protein interaction.
Takeaway
HuR is a helper protein that helps HIV-1 make copies of itself inside infected cells. If HuR is not there, HIV-1 has a hard time making those copies.
Methodology
Yeast two-hybrid screening and HTRF assays were used to identify and confirm the interaction between HuR and HIV-1 reverse transcriptase.
Limitations
The study does not explore the exact mechanism by which HuR influences reverse transcription.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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