Researchers Develop Universal Flu Vaccine With Nanoparticles That Protect Against Six Different Viruses
clm1970 shares a report from Georgia State University: A novel nanoparticle vaccine that combines two major influenza proteins is effective in providing broad, long-lasting protection against influenza virus in mice, showing promise as a universal flu vaccine, according to a study by the Institute for Biomedical Sciences at Georgia State University. The double-layered nanoparticle vaccine contains the influenza virus proteins matrix protein 2 ectodomain (M2e) and neuraminidase (NA). Mice were immunized with the nanoparticle vaccine before being exposed to influenza virus, and they were protected against six different strains of the virus. The findings, which suggest this unique vaccine combination has potential as a universal influenza vaccine or component of such vaccines, are published in the journal Advanced Healthcare Materials. The influenza virus protein M2e is found in all influenza virus strains, with each strain having a very similar version, and the protein has mutated very slowly over time. The protein NA is found on the surface of influenza virus and has also mutated much slower than other influenza proteins. This double-layered nanoparticle vaccine uses M2e as its core, and NA is coated on the surface. In the study, mice were exposed to one of six influenza virus strains after receiving the nanoparticle vaccine by intramuscular injection. The vaccine proved to have long-lasting immune protection, which was unchanged against viral challenges up to four months after immunizations.
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