Abstract:
:Earlier, we detected viral RNAs packaged in the porcine adenovirus (PAdV) -3 virions. Using Southern blot analysis, we further demonstrated that the viral RNAs were predominantly packaged in CsCl purified mature capsids (containing viral genome) than empty/intermediate capsids. Some of the packaged viral RNAs appear to be polyadenylated. Real-time reverse transcription (RT)-PCR analysis indicated that the copy number of the tested viral mRNAs encoding E1Bsmall and fiber proteins was less than one per full capsid. Moreover, detection of viral RNA packaged in CsCl purified human adenovirus (HAdV) -5 virions indicates that the viral RNA packaging might be a common phenomenon in members of Adenoviridae family. Further quantitative analysis of viral protein, DNA, and RNA in CsCl purified mature and empty/intermediate capsids of recombinant HAdV-5 expressing enhanced green fluorescent protein indicated that the traceable viral RNA detected in empty/intermediate capsids seems associated with the presence of traceable viral genomic DNA. Taken together, our data suggest that the viral RNAs may be passively packaged in adenovirus virion during encapsidation of viral genomic DNA in cell nuclei. Thus, viral RNA packaging may be a characteristic feature of adenoviral genomic DNA encapsidation.
journal_name
Virol Jjournal_title
Virology journalauthors
Xing L,Tikoo SKdoi
10.1186/1743-422X-6-16subject
Has Abstractpub_date
2009-02-05 00:00:00pages
16issn
1743-422Xpii
1743-422X-6-16journal_volume
6pub_type
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