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Dengue fever in humanized NOD/SCID mice
Dennis A Bente1, Michael W Melkus, J Victor Garcia
1Department of Virology and Immunology, Southwest Foundation for Biomedical Research, 7620 NW Loop 410, San Antonio, TX 78227, USA.
Journal of Virology
|October 18, 2005
Summary
A new mouse model using human cells mimics dengue fever (DF) and dengue hemorrhagic fever (DHF) in humans. This breakthrough allows for studying disease progression and testing new dengue treatments.
Area of Science:
- Virology
- Immunology
- Tropical Medicine
Background:
- Dengue fever (DF) and dengue hemorrhagic fever (DHF) are significant global health threats, causing millions of infections annually.
- Current lack of effective vaccines or treatments is due to the absence of suitable animal models for human dengue disease.
- Existing models, including non-human primates, do not accurately replicate human DF/DHF symptoms.
Purpose of the Study:
- To develop a novel animal model for studying human dengue fever (DF) and dengue hemorrhagic fever (DHF).
- To enable research into DF/DHF pathogenesis and the evaluation of potential antidengue therapies.
Main Methods:
- Utilizing nonobese diabetic/severely compromised immunodeficient (NOD/SCID) mice xenografted with human CD34+ cells.
- Infecting these humanized mice in a manner that mimics natural mosquito transmission (specific dose and mode).
Main Results:
- Xenografted NOD/SCID mice developed clinical signs consistent with human DF, including fever, rash, and thrombocytopenia.
- The model successfully replicated key human dengue symptoms following infection.
Conclusions:
- The humanized NOD/SCID mouse model provides a valuable platform for investigating dengue virus pathogenesis.
- This model is suitable for preclinical testing of antidengue drugs and therapeutic products.