ArticleInternational journal of molecular sciences2015
Identification of Rhopalosiphum Padi Virus 5' Untranslated Region Sequences Required for Cryptic Promoter Activity and Internal Ribosome Entry.
Article in International journal of molecular sciences, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed, 2 citations in OpenAlex.
- Topoisomerase II Inhibitors Can Enhance Baculovirus-Mediated Gene Expression in Mammalian Cells through the DNA Damage Response.International journal of molecular sciences · 2016Article
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5 authors at 3 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
The 579-nucleotide 5' untranslated region (5'UTR) of the Rhopalosiphum padi virus (RhPV) possesses a cross-kingdom internal ribosome entry site (IRES) activity that functions in insect, mammalian, and plant-derived in vitro translation systems, and six TAAG motifs within the DNA fragment encoding the RhPV 5'UTR were previously found to confer the RhPV 5'UTR with late promoter activity in baculovirus. In the present study, various truncated RhPV 5'UTR sequences were produced, and among them, a fragment of 110 bp ranging from nucleotides 309 to 418 was identified to be the shortest fragment responsible for the late promoter activity in baculovirus infected Sf21 cells. This 110 bp fragment contains a TAAG tandem repeat that retains more than 60% of the late promoter activity of the full length RhPV 5'UTR sequence. Further, IRES activity remained unchanged in all truncated RhPV 5'UTR constructs. Taken together, this novel 110 bp fragment having late promoter activity in baculovirus as well as IRES activity in mammalian cell, renders it a useful tool for the development of a "shuttle" bi-cistronic baculovirus gene expression and/or delivery vector.
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