title: Twins, quadruplexes, and more: functional aspects of native and engineered RNA self-assemblyin vivo.
abstract: The primacy and power of RNA in governing many processes of life has begun to be more fully appreciated in both the discovery and inventive sciences. A variety of RNA interactions regulate gene expression, and structural self-assembly underlies many of these processes. The understanding sparked by these discoveries has inspired and informed the engineering of novel RNA structures, control elements, and genetic circuits in cells. Many of these engineered systems are built up fundamentally from RNA-RNA interactions, often combining modular, rational design with functional selection and screening. It is therefore useful to review the particular class of RNA-based regulatory mechanisms that rely on RNA self-assembly either through homomeric (self-self) or heteromeric (self-nonself) RNA-RNA interactions. Structures and sequence elements within individual RNAs create a basis for the pairing interactions, and in some instances can even lead to the formation of RNA polymers. Example systems of dimers, multimers, and polymers are reviewed in this article in the context of natural systems, wherein the function and impact of self-assemblies are understood. Following this, a brief overview is presented of specific engineered RNA self-assembly systems implementedin vivo, with lessons learned from both discovery and engineering approaches to RNA-RNA self-assembly.
authors.affiliation: Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, Ohio, USA.
authors.forename: Richard A
authors.initials: RA
authors.lastname: Lease
authors.forename: Véronique
authors.initials: V
authors.lastname: Arluison
authors.forename: Christophe
authors.initials: C
authors.lastname: Lavelle
keywords: RNA engineering; RNA structure; dimeric and oligomeric RNA; noncoding RNA; self-assembly
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