Abstract
Vaccines produced by transgenic plants would have the potential to change the traditional means of production and inoculation of vaccines, and to reduce the cost of vaccine production. In the present study, an UreB antigen gene from a new Helicobacter pylori strain ZJC02 was cloned into the binary vector pBI121 which contains a CaMV35S promoter and a kanamycin resistance gene, and then transformed UreB into tobacco leaf-disc by Agrobacterium-mediated method. A total of 50 regenerated plants with kanamycin resistance were obtained in the selection media. The 35 putative transgenic individuals were tested and verified the presence and integration of the UreB into the nuclear genome of tobacco plants by PCR, PCR-southern, and Southern analyses. Expression of UreB gene in the tobacco plants was confirmed by RT-PCR and Western Blot analysis using polyclonal human antiserum. To our knowledge, this is the first report of the expression of Helicobacter pylori UreB antigen gene in a plant system, suggesting a major step in the production of plant-based vaccines for Helicobacter pylori.
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Acknowledgements
The authors sincerely thank Dr. Chunyuan Huang (Adelaide University, Australia) for his critical reading of this manuscript. This work was supported by the National Natural Science Foundation of China (No. 30300017; 30370876), the Natural Science Foundation of Zhejiang Province (No. 301018), and the program for science and technology from Zhejiang Province (No. 2004C32015; 2003C34005).
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Gu, Q., Han, N., Liu, J. et al. Cloning of Helicobacter pylori urease subunit B gene and its expression in tobacco (Nicotiana tabacum L.). Plant Cell Rep 24, 532–539 (2005). https://doi.org/10.1007/s00299-005-0962-8
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DOI: https://doi.org/10.1007/s00299-005-0962-8