Publication: Delivery of double stranded RNA by Macrobrachium rosenbergii nodavirus-like particles to protect shrimp from white spot syndrome virus
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2015-01-01
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00448486
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2-s2.0-84908431508
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Mahidol University
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Aquaculture. Vol.435, (2015), 86-91
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Pitchanee Jariyapong, Charoonroj Chotwiwatthanakun, Sataporn Direkbusarakom, Ikuo Hirono, Suwit Wuthisuthimethavee, Wattana Weerachatyanukul (2015). Delivery of double stranded RNA by Macrobrachium rosenbergii nodavirus-like particles to protect shrimp from white spot syndrome virus. Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/35240.
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Delivery of double stranded RNA by Macrobrachium rosenbergii nodavirus-like particles to protect shrimp from white spot syndrome virus
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Abstract
© 2014 Elsevier B.V. We tested the use of Macrobrachium rosenbergii nodavirus-like particles (MrNv-VLPs) as a delivery mechanism to carry therapeutic agents against white spot syndrome in shrimp. We used constructed double-stranded RNA called VP28 (VP28 dsRNA) against WSSV envelope genes to confer protection against the pathogen. Results showed that MrNv-VLP was able to encapsulate VP28 dsRNA. Using enhanced green fluorescent protein (EGFP) as a reporter, we found that VLP penetrated various shrimp tissues including the muscle, hepatopancreas, and gill. A statistically significant relative survival rate of 44.5% was obtained in the group of shrimp receiving encapsulated VP28 dsRNA-VLP after WSSV challenge as compared to 100% mortality in the control shrimp at 7. days post-infection. Shrimp treated with EGFP dsRNA loaded into MrNv-VLPs showed relatively similar motility rates as those of controls. Moreover, MrNv-VLP encapsulation improved VP28 dsRNA efficiency against WSSV. A higher survival rate of 16.7% was observed in the group of shrimp receiving encapsulated VP28 dsRNA-VLP when compared to those receiving naked VP28 dsRNA. These results indicate that MrNv-VLP is a good candidate for use as a therapeutic delivery system against shrimp diseases due to its self-reassembly property, broad target of various shrimp tissues and immune enhancement.