WANG Hong, et al. Expression of Echinococcus multilocularis 14-3-3 antigen encoding gene in BCG[J]. Journal of Chongqing Medical University, 2006,(3):299-301.
WANG Hong, et al. Expression of Echinococcus multilocularis 14-3-3 antigen encoding gene in BCG[J]. Journal of Chongqing Medical University, 2006,(3):299-301.DOI:
Objective: To study the expression of Echinococcus multilocularis 14-3-3 antigen encoding gene in Bacillus Calmette-Guerin(BCG).Methods: The recombinant plasmid pBCG-Em14-3-3 was introduced into BCG by electroporation and the bacteria with pBCG-Em14-3-3 were cultured to logarithm growth period
then induced daily by heating at 45℃ for 30min in the last three days.The expression products were analyzed by SDS-PAGE and Western blot.Results: The Em14-3-3 recombinant protein was successfully expressed by pBCG-Em14-3-3 in BCG as an obvious band of 27kDa by SDS-PAGE
which accounted for 11% of total bacterial protein in BCG.Conclusion: The pBCG-Em14-3-3 could be expressed efficiently in BCG and be combined with specific antibody in mice sera
which suggested that the Em14-3-3 recombinant protein expressed by rBCG-Em14-3-3 vaccine was of specific antigenicity.