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Title

Gene silencing of the tick protective antigens, Bm86, Bm91 and subolesin, in the one-host tick Boophilus microplus by RNA interference

AuthorsNijhof, Ard M.; Taoufik, Amar; Fuente, José de la ; Kocan, Katherine M.; Vries, Erik de; Jongejan, Frans
KeywordsBm86
Bm91
Subolesin
RNAi
Boophilus microplus
One-host tick
Issue Date11-Dec-2006
PublisherElsevier
CitationInternational Journal for Parasitology 37(6): 653-662 (May 2007)
AbstractThe use of RNA interference (RNAi) to assess gene function has been demonstrated in several three-host tick species but adaptation of RNAi to the one-host tick, Boophilus microplus, has not been reported. We evaluated the application of RNAi in B. microplus and the effect of gene silencing on three tick-protective antigens: Bm86, Bm91 and subolesin. Gene-specific double-stranded (dsRNA) was injected into two tick stages, freshly molted unfed and engorged females, and specific gene silencing was confirmed by real time PCR. Gene silencing occurred in injected unfed females after they were allowed to feed. Injection of dsRNA into engorged females caused gene silencing in the subsequently oviposited eggs and larvae that hatched from these eggs, but not in adults that developed from these larvae. dsRNA injected into engorged females could be detected by quantitative real-time RT-PCR in eggs 14 days from the beginning of oviposition, demonstrating that unprocessed dsRNA was incorporated in the eggs. Eggs produced by engorged females injected with subolesin dsRNA were abnormal, suggesting that subolesin may play a role in embryonic development. The injection of dsRNA into engorged females to obtain gene-specific silencing in eggs and larvae is a novel method which can be used to study gene function in tick embryogenesis.
Description10 pages.-- Sponsored article (free-access at the publisher web).
Publisher version (URL)http://dx.doi.org/10.1016/j.ijpara.2006.11.005
URIhttp://hdl.handle.net/10261/7651
DOI10.1016/j.ijpara.2006.11.005
ISSN0020-7519
Appears in Collections:(IREC) Artículos
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