How NF-κB and IκBα Control HIV Expression in Resting T Cells
Author Information
Author(s): Mayte Coiras, María Rosa López-Huertas, Joaquín Rullas, Maria Mittelbrunn, José Alcamí
Primary Institution: Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
Hypothesis
The existence of a basal NF-κB activity could contribute to the low viral replication detected in HIV-infected CD4+ T lymphocytes in a resting state.
Conclusion
The balance between NF-κB and IκBα in resting CD4+ T lymphocytes plays a crucial role in maintaining HIV latency and regulating low-level HIV replication.
Supporting Evidence
- Inhibition of nuclear export led to accumulation of IκBα and p65/RelA in the nucleus.
- Nuclear IκBα inhibits HIV-LTR dependent transcription.
- Basal NF-κB activity in resting T cells is linked to low-level HIV replication.
Takeaway
This study shows that proteins called NF-κB and IκBα move in and out of the nucleus of T cells, helping to control whether HIV can be active or stay quiet.
Methodology
Resting CD4+ T lymphocytes were treated with leptomycin B to analyze the shuttling of IκBα and p65/RelA between the nucleus and cytosol.
Participant Demographics
Resting CD4+ T lymphocytes were isolated from blood of healthy donors.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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