A Transgenic Mouse Model of Poliomyelitis

Area of Science:

• Virology and Immunology
• Transgenic Animal Models
• Neuroscience

Background:

• Poliovirus infection causes poliomyelitis, a neurological disease.
• Assessing poliovirus neurovirulence is crucial for public health and vaccine development.
• Traditional methods often involve non-human primates, which are costly and ethically complex.

Purpose of the Study:

• To describe the utility of transgenic mice expressing the human poliovirus receptor (PVR) for studying poliovirus.
• To detail methods for analyzing poliovirus pathogenicity and host immune responses in this model.
• To highlight the advantages of the PVR-tg mouse model for research and surveillance.

Main Methods:

• Generation of transgenic (tg) mice expressing the human poliovirus receptor (CD155).
• Infection of PVR-tg mice with various poliovirus strains (wild-type, mutants, vaccine-derived).
• Assessment of neurovirulence, tissue tropism, and host immune responses in infected mice.

Main Results:

• PVR-tg mice are susceptible to poliovirus and develop poliomyelitis-like neurological disease.
• The model allows for the evaluation of neurovirulence for different poliovirus strains and mutants.
• PVR-tg mice are suitable for studying poliovirus tissue tropism and immune system interactions.

Conclusions:

• The PVR-tg mouse model provides a valuable, non-primate alternative for poliovirus research.
• This model is essential for assessing neurovirulence, surveillance of circulating polioviruses, and vaccine quality control.
• PVR-tg mice can be further utilized in combination with other genetically modified mouse lines for complex studies.