Publication: Therapeutic effect of Artemia enriched with Escherichia coli expressing double-stranded RNA in the black tiger shrimp Penaeus monodon
2
Issued Date
2013-09-05
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ISSN
18729096
01663542
01663542
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2-s2.0-84883221797
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Mahidol University
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SCOPUS
Bibliographic Citation
Antiviral Research. Vol.100, No.1 (2013), 202-206
Suggested Citation
Thitiporn Thammasorn, Parinyachat Somchai, Chaowanee Laosutthipong, Sarocha Jitrakorn, Somjai Wongtripop, Siripong Thitamadee, Boonsirm Withyachumnarnkul, Vanvimon Saksmerprome Therapeutic effect of Artemia enriched with Escherichia coli expressing double-stranded RNA in the black tiger shrimp Penaeus monodon. Antiviral Research. Vol.100, No.1 (2013), 202-206. doi:10.1016/j.antiviral.2013.08.005 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/31871
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Title
Therapeutic effect of Artemia enriched with Escherichia coli expressing double-stranded RNA in the black tiger shrimp Penaeus monodon
Abstract
We exploited Artemia as a double-stranded (ds)RNA-delivery system to combat viral diseases in shrimp. First, the transformed Escherichia coli (E. coli) expressing red fluorescent protein (RFP) was tested in the Artemia enrichment process. RFP signals detectable in the gut of Artemia under confocal microscope were evident for the successful encapsulation. Second, the Artemia enrichment process was performed using E. coli producing Laem-Singh virus (LSNV)-specific dsRNA, which has been previously shown to inhibit the viral infection in the black tiger shrimp Penaeus monodon by intramuscular injection and oral administration. The enriched Artemia nauplii were confirmed to contain dsRNA-LSNV by RT-PCR, and were subjected to the feeding test with P. monodon postlarvae. Quantitative RT-PCR indicated that a number of LSNV copies in most of the treated shrimp were, at least, 1000-fold lower than the untreated controls. During 11-17 weeks after feeding, average body weight of the treated group was markedly increased relative to the control group. A smaller differential growth rate of the treated group as compared to the control was also noticed. These results suggested that feeding shrimp with the dsRNA-enriched Artemia can eliminate LSNV infection, which is the cause of retarded growth in P. monodon. The present study reveals for the first time the therapeutic effect of dsRNA-enriched Artemia for shrimp disease control. © 2013 Elsevier B.V. All rights reserved.