, Volume 232, Issue 2, pp 409–416 | Cite as

Expression of an immunogenic F1-V fusion protein in lettuce as a plant-based vaccine against plague

  • Sergio Rosales-Mendoza
  • Ruth E. Soria-Guerra
  • Leticia Moreno-Fierros
  • Ángel G. Alpuche-Solís
  • Luzmila Martínez-González
  • Schuyler S. Korban
Original Article


Yersinia pestis is a pathogenic agent that causes the bubonic and pneumonic plague. The development of an efficient and low-cost oral vaccine against these diseases is highly desirable. In this study, the immunogenic fusion protein F1-V from Y. pestis was introduced into lettuce via Agrobacterium-mediated transformation, and putative transgenic lines were developed. The presence of the transgene in these putative transgenic lines was determined using polymerase chain reaction (PCR), and transgene integration and transgene copy number were confirmed following Southern blot analysis. The presence of specific F1-V transcripts was confirmed by reverse-transcriptase (RT)-PCR. Using monoclonal antibodies, ELISA and western blot analysis revealed that the expected antigenic F1-V protein was successfully expressed in transgenic lines. Mice immunized subcutaneously with lettuce expressing the F1-V antigen developed systemic humoral responses as ‘proof of concept’ of using lettuce as a production platform for the F1-V immunogen that could be used as a candidate plant-based vaccine against plague.


Yersinia pestis Transgenic plants Plague Antigenic fusion protein Plant-based vaccine 


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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Sergio Rosales-Mendoza
    • 1
  • Ruth E. Soria-Guerra
    • 2
  • Leticia Moreno-Fierros
    • 3
  • Ángel G. Alpuche-Solís
    • 4
  • Luzmila Martínez-González
    • 4
  • Schuyler S. Korban
    • 2
  1. 1.Facultad de Ciencias QuímicasUniversidad Autónoma de San Luis PotosíSan Luis PotosiMexico
  2. 2.Department of Natural Resources and Environmental SciencesUniversity of IllinoisUrbanaUSA
  3. 3.Inmunidad en Mucosas, UBIMED, FES-IztacalaUniversidad Nacional Autónoma de MéxicoTlalnepantlaMexico
  4. 4.División de Biología Molecular, IPICYTSan Luis PotosiMexico

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