Se trata de la segunda vacuna experimental eficaz puesta a punto por el Instituto Nacional de Alergia y Enfermedades Infecciosas (NIAID), según los investigadores que publican el estudio en el último número de "Proceedings of the National Academy of Sciences".
Esta segunda variedad de vacuna utiliza la proteína S, que se encuentra en la membrana que recubre el virus causante del SRAS, y es la que permite a este coronavirus penetrar en las células humanas. La vacuna tiene como objetivo que esta proteína imite la infección del SRAS, explica el autor principal de la investigación, el Dr. Bernard Moss. Los científicos han insertado un gen codificado de la proteína S en un virus de la vacuna Ankara modificada (MVA), utilizada en la vacuna contra la viruela. Ni la MVA ni el gen insertado pueden provocar el SRAS. Pero la MVA transporta el gen de la proteína S en el organismo, preparado para luchar contra un ataque del SRAS.
Webs Relacionadas
Proceedings of the National Academy of Sciences
http://www.pnas.org/
NIAID
http://www.niaid.nih.gov/
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