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Updated: Jan 17, 2026

A Murine Model of Dengue Virus-induced Acute Viral Encephalitis-like Disease
Published on: April 28, 2019
Fosaprepitant Dimeglumine Alleviates Dengue Virus Infection and Virus-Induced Inflammatory Responses
Xueyi Deng1, Ningze Zheng1, Shurui Liu1
1Institute of Human Virology, Department of Pathogen Biology and Biosecurity, and Key Laboratory of Tropical Disease Control of Ministry of Education, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China.
Fosaprepitant dimeglumine, an anti-nausea drug, effectively inhibits dengue virus (DENV) replication and reduces severe dengue-associated inflammation. This finding suggests its potential for repurposing as a dengue antiviral therapy.
Area of Science:
- Virology
- Immunology
- Pharmacology
Background:
- Dengue virus (DENV) infection is a significant global health concern.
- Current dengue treatment is primarily supportive, lacking targeted antiviral therapies.
- Severe dengue is linked to an immune-mediated cytokine storm.
Purpose of the Study:
- To investigate the antiviral potential of fosaprepitant dimeglumine against DENV.
- To evaluate the effect of fosaprepitant dimeglumine on DENV-induced inflammatory responses.
Main Methods:
- In vitro studies using various cell lines (A549, THP-1 macrophages) and a DENV replicon system.
- Dose-response and time-of-drug-addition/elimination assays were performed.
- Quantification of proinflammatory cytokines (IL-6, IP-10) in infected macrophages.
Main Results:
- Fosaprepitant dimeglumine demonstrated dose-dependent inhibition of DENV replication (IC50 values 3.26–4.20 μM).
- The drug acts at late stages of the viral replication cycle, post-entry.
- Significantly suppressed DENV-induced IL-6 and IP-10 levels in macrophages.
Conclusions:
- Fosaprepitant dimeglumine effectively inhibits DENV replication and attenuates key inflammatory markers.
- This FDA-approved drug shows promise for repurposing in severe dengue treatment.
- Further research into fosaprepitant dimeglumine as a dengue therapeutic is warranted.
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