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http://dx.doi.org/10.5483/BMBRep.2014.47.11.257

Effects of different target sites on antisense RNA-mediated regulation of gene expression  

Park, Hongmarn (Department of Chemistry, KAIST)
Yoon, Yeongseong (Korea Science Academy of KAIST)
Suk, Shinae (Department of Chemistry, KAIST)
Lee, Ji Young (Department of Chemistry, KAIST)
Lee, Younghoon (Department of Chemistry, KAIST)
Publication Information
BMB Reports / v.47, no.11, 2014 , pp. 619-624 More about this Journal
Abstract
Antisense RNA is a type of noncoding RNA (ncRNA) that binds to complementary mRNA sequences and induces gene repression by inhibiting translation or degrading mRNA. Recently, several small ncRNAs (sRNAs) have been identified in Escherichia coli that act as antisense RNA mainly via base pairing with mRNA. The base pairing predominantly leads to gene repression, and in some cases, gene activation. In the current study, we examined how the location of target sites affects sRNA-mediated gene regulation. An efficient antisense RNA expression system was developed, and the effects of antisense RNAs on various target sites in a model mRNA were examined. The target sites of antisense RNAs suppressing gene expression were identified, not only in the translation initiation region (TIR) of mRNA, but also at the junction between the coding region and 3' untranslated region. Surprisingly, an antisense RNA recognizing the upstream region of TIR enhanced gene expression through increasing mRNA stability.
Keywords
Artificial RNA; Antisense RNA; Double stem-loop; Enhancer; Up-regulation;
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