Monoclonal antibodies against the fusion protein are protective in necrotizing mumps meningoencephalitis

Area of Science:

• Virology
• Immunology
• Neurology

Background:

• Mumps virus infection can cause severe neurological complications, including encephalitis and brain necrosis.
• The specific mechanisms by which mumps virus induces brain damage are not fully understood.

Purpose of the Study:

• To investigate the protective effect of a monoclonal antibody against the mumps virus fusion (F) protein in mumps virus-induced encephalitis.
• To determine the role of the mumps virus F protein in the pathogenesis of brain necrosis.

Main Methods:

• Administration of a monoclonal antibody targeting the mumps virus F protein.
• Induction of mumps virus encephalitis in a relevant model.
• Assessment of protection against encephalitis and brain necrosis.

Main Results:

• The monoclonal antibody conferred marked protection against mumps virus-induced encephalitis.
• Almost total prevention of extensive brain necrosis was observed in treated subjects.
• The F protein of the mumps virus was directly implicated in the development of brain necrosis.

Conclusions:

• The mumps virus F protein is a key factor in the pathogenesis of brain necrosis.
• Monoclonal antibodies targeting the F protein represent a potential therapeutic strategy for mumps virus encephalitis.