Protective potency of recombinant meningococcal IgA1 protease and its structural derivatives upon animal invasion with meningococcal and pneumococcal infections

Publication date: Available online 22 February 2019Source: Microbes and InfectionAuthor(s): Olga Kotelnikova, Alexander Alliluev, Alexei Zinchenko, Larisa Zhigis, Yuri Prokopenko, Elena Nokel, Olga Razgulyaeva, Vera Zueva, Marina Tokarskaya, Natalia Yastrebova, Elena Gordeeva, Tatyana Melikhova, Elena Kaliberda, Lev RumshAbstractImmunization of mice with recombinant IgA1 protease of Neisseria meningitidis or several structural derivatives thereof protects the animals infected with a variety of deadly pathogens, including N. meningitidis serogroups A, B, and C and 3 serotypes of Streptococcus pneumonia. In sera of rabbits immunized with inactivated pneumococcal cultures, antibodies binding IgA1-protease from N. meningitidis serogroup B were detected. Thus, the cross-reactive protection against meningococcal and pneumococcal infections has been demonstrated in vivo. Presumably it indicates the presence of common epitopes in the N. meningitidis IgA1 protease and S. pneumoniae surface proteins.
Source: Microbes and Infection - Category: Infectious Diseases Source Type: research