Publication: Recombinant baculovirus mediates dsRNA specific to rr2 delivery and its protective efficacy against WSSV infection
4
Issued Date
2016-07-10
Resource Type
ISSN
18734863
01681656
01681656
Other identifier(s)
2-s2.0-84969674152
Rights
Mahidol University
Rights Holder(s)
SCOPUS
Bibliographic Citation
Journal of Biotechnology. Vol.229, (2016), 44-52
Suggested Citation
Triwit Rattanarojpong, Suthiwat Khankaew, Pongsak Khunrae, Rapeepun Vanichviriyakit, Kanokwan Poomputsa Recombinant baculovirus mediates dsRNA specific to rr2 delivery and its protective efficacy against WSSV infection. Journal of Biotechnology. Vol.229, (2016), 44-52. doi:10.1016/j.jbiotec.2016.05.007 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/42890
Research Projects
Organizational Units
Authors
Journal Issue
Thesis
Title
Recombinant baculovirus mediates dsRNA specific to rr2 delivery and its protective efficacy against WSSV infection
Other Contributor(s)
Abstract
© 2016 Elsevier B.V. White spot syndrome virus (WSSV) is a major causative agent in shrimp farming. Consequently, RNAi technology is an effective strategy to prevent WSSV infection in shrimp especially dsRNA targeting to rr2 of WSSV. In an effort to develop dsRNA expression in shrimp for control of WSSV infection, we developed a recombinant baculovirus expressing recombinant VP28 as the gene delivery system to carry a gene encoding dsRNA specific to rr2 for triggering the RNAi process in shrimp. The results showed that the recombinant baculovirus harboring VP28 was able to express VP28 indicated by Western blot with polyclonal antibody specific to VP28. VP28 transcript was detected in shrimp hemocytes after co-culture hemocytes with the recombinant baculovirus displaying VP28. In addition, we found that shrimp injected with the recombinant baculovirus displaying VP28 and encoding dsRNA synthetic gene specific to rr2 (Bac-VP28-dsrr2) showed the lowest cumulative mortality (33%) at 14 days post infection (dpi) when compared to shrimp injected with baculovirus displaying VP28 (Bac-VP28) (64% cumulative mortality) (p < 0.05). According to the results, shrimp injected with Bac-VP28-dsrr2 also showed significantly lower WSSV copies than shrimp injected with Bac-VP28 (p < 0.05) along with the down-regulation of rr2 expression at 1, 3 and 7 dpi. In conclusion, the Bac-VP28-dsrr2 was effective in prevention of WSSV infection. Therefore, the results obtained here can be applied to the prevention of WSSV infection by mixing the recombinant baculovirus with shrimp feed in the future.