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Updated: Jun 7, 2026
Expression of Exogenous Antigens in the Mycobacterium bovis BCG Vaccine via Non-genetic Surface Decoration with the Avidin-biotin System
Published on: January 31, 2018
Identification of immunodominant antigens of Mycobacterium bovis by expression library immunization
Paulina K Beltrán1, Abel Gutiérrez-Ortega, Ana M Puebla-Pérez
1Centro de Investigación y Asistencia en Tecnología y diseño del Estado de Jalisco, Guadalajara, Jalisco, Mexico.
This study combines two methodologies - vector expression of a genomic library and proteomics - to identify immunogenic proteins of Mycobacterium bovis. Immunization of BALB/c mice with a plasmid DNA pool from the library, containing approximately 8000 clones, induced a humoral response that facilitated the detection of 12 antigenic proteins by Western blotting. Two-dimensional sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) and mass spectrometry identified four proteins (Cpn60-1, HSP70, EF-Tu, and AdoHcyase). Such genomic immunization offers the possibility of in vivo screening of potential candidate M. bovis antigens.
This study combines two methodologies - vector expression of a genomic library and proteomics - to identify immunogenic proteins of Mycobacterium bovis. Immunization of BALB/c mice with a plasmid DNA pool from the library, containing approximately 8000 clones, induced a humoral response that facilitated the detection of 12 antigenic proteins by Western blotting. Two-dimensional sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) and mass spectrometry identified four proteins (Cpn60-1, HSP70, EF-Tu, and AdoHcyase). Such genomic immunization offers the possibility of in vivo screening of potential candidate M. bovis antigens.
