Abstract：
:A reverse genetics infectious bursal disease virus (RG-IBDV) that contained authentic 3' RNA sequence was characterized both in vitro and in vivo. LP1-IBDV, a cell line-adapted IBDV strain variant E (VE) was used as the parent virus for constructing viral cDNA clones. Authentic 3' RNA sequence was generated by using cis-acting hepatitis delta virus ribozyme (HDR). The absence of HDR in the clones did not affect viral protein expression, but the obtained viral titers were reduced by 200-folds when compared to the clones with HDR sequence. RG-IBDV generated from clones with HDR sequence was similar to LP1-IBDV by plaque size, growth kinetics and electron microscopic morphology. RG-IBDV did not cause bursal atrophy in 3-week-old chickens at 3, 7 and 17 days post infection (DPI) and induced high ELISA and neutralizing antibody titers to IBDV at 7 and 17 DPI. The results indicated that RG-IBDV can be generated efficiently with an authentic 3' RNA terminus and the obtained RG-IBDV is non-pathogenic and immunogenic with the potential as a vaccine strain that can be further genetically modified to broaden its application.
journal_name
Vaccinejournal_title
Vaccineauthors
Mosley YY,Wu CC,Lin TLdoi
10.1016/j.vaccine.2012.11.040subject
Has Abstractpub_date
2013-01-11 00:00:00pages
704-10issue
4eissn
0264-410Xissn
1873-2518pii
S0264-410X(12)01647-7journal_volume
31pub_type
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