Small Animal Models for Evaluating Filovirus Countermeasures

Area of Science:

• Virology
• Infectious Diseases
• Animal Models

Background:

• Developing effective therapeutics and vaccines against filoviruses, like Ebola and Marburg viruses, requires accurate animal models that mirror human disease progression.
• Small animal models, including mice and guinea pigs, are traditionally used for initial antiviral testing before progressing to nonhuman primates, the gold standard.
• Recent years have seen significant improvements in existing small animal models and the introduction of new ones, such as hamsters and ferrets.

Purpose of the Study:

• To review the current landscape of small animal models for filovirus disease.
• To assess the utility of these models in preclinical development of antiviral countermeasures.
• To highlight the collective value of various small animal models in studying filovirus infections.

Main Methods:

• Review of existing literature on filovirus animal models.
• Analysis of disease characteristics recapitulated in small animal models.
• Evaluation of the suitability of these models for preclinical antiviral testing.

Main Results:

• Small animal models (mice, guinea pigs, hamsters, ferrets) are now available for most human-pathogenic filoviruses.
• These models exhibit key disease features, including viral replication, coagulopathy, and immune dysfunction.
• While no single model is perfect, collectively they offer a comprehensive preclinical development toolkit.

Conclusions:

• Small animal models have advanced significantly, providing valuable tools for filovirus research.
• These refined models facilitate the preclinical evaluation of novel antiviral drugs and vaccines.
• The collective use of diverse small animal models offers a robust platform for combating filovirus diseases.