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Published on: April 23, 2012
[The genetic stability of recombinant adenovirus expressing human rotavirus VP6 gene which used Ad41 as vector]
Min Wang1, Duo-Ling Chen, Jing-Dong Song
1Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China. minw_12@163.com
Objective:
To investigate the genetic stability of non-replicating recombinant adenovirus which used Ad41 as vector and could express VP6 gene of group A rotavirus during continous passage, in order to develop the vaccine of rotavirus.
Methods:
The recombinant adenovirus rvAd41-VP6 (o) was prepared by our laboratory early, it then was continuously propagated on 293TE7 cells for 14 passages. After that samples of the infected cells were collected at every 2 passages for the detection of the integration of the VP6 gene by PCR, and the expression of the target protein was detected by Western Blot analysis.
Results:
Analysis by PCR revealed that, there was stable integration of specific VP6 gene in the rvAd41-VP6 (o), Western Blot analysis confirmed that rvAd41-VP6 (o) could stably expressed the group-specific antigen structural protein VP6 (o), and it had preferable genetic stability.
Conclusion:
The recombinant adenovirus rvAd41-VP6 (o) which could stably express the VP6 (o) gene had favorable biological property in vitro, and it has provided a basis for further research of animal immunization.
