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Updated: Jan 4, 2026
High Throughput In Vitro Assessment of Latency Reversing Agents on HIV Transcription and Splicing
Published on: January 22, 2019
Ephedrine enhances HIV-1 reactivation from latency through elevating tumor necrosis factor receptor II (TNFRII)
Jutatip Panaampon1, Eriko Kudo1, Ryusho Kariya1
1Division of Hematopoiesis, Graduate School of Medical Sciences, and Joint Research Center for Human Retrovirus Infection, Kumamoto University, 2-2-1 Honjo, Chuo-ku, Kumamoto, 860-0811, Japan.
Abstract:
HIV-1 persists during antiretroviral therapy (ART) due to long-lived and proliferating latently-infected host cells, with the outcome being an incomplete cure. The latently-infected cells, or reservoir cells, are transcriptionally absent and invisible to the immune response. Elimination of latency is one strategy in activating virus production, making it visible to immune clearance. We previously showed that Ephedrae herba reactivated HIV-1 from latency. In this study, we used ephedrine, a major component of Ephedra herba, to reactivate HIV-1 from latency. The results showed that ephedrine enhances HIV-1 reactivation in the presence of TNFα. Combination treatment demonstrates a synergistic effect of HIV-1 reactivation compared to TNFα alone. Ephedrine treatment shows a higher TNFRII expression level, which is related to increased HIV-1 reactivation. However, the mechanism of ephedrine in HIV-1 reactivation is still unclear, and may be related to TNFRII receptor expression. Our results indicate that ephedrine enhances HIV-1 reactivation from latency in combination with TNFα treatment. This new reagent could be a promising latency reversal agent (LRA).
