Mimicry Technology: Suppressing Small RNA Activity in Plants
Small RNA suppression constitutes one of the major difficulties for a full molecular characterization of their specific roles in plants. Taking advantage of the latest insights into the new post-biogenesis layer of regulation in microRNA (miRNA) activity, it is possible to overcome the above-mentioned limitation (Nat Genet 39:1033–1037, 2007). We engineered the IPS1 non-coding RNA to bear a complementary sequence to a given miRNA family, resulting in specific sequestration of RISC complexes. MIMIC technology allows for the constitutive release of all of the potential targets of a miRNA family as well as tissue-specific and inducible suppression of its activity.
Key wordsTarget mimicry microRNA Small RNA suppression IPS1
The authors thank Prof. Detlef Weigel and the microRNA team at his lab for continuous and helpful discussion and Beth Rowans for manuscript comments and text editing. Authors are supported by European Community FP6 IP SIROCCO (contract LSHG-CT-2006-037900) and by the Max Planck Society.
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