title: Synthetic Polymer Hybridization with DNA and RNA Directs Nanoparticle Loading, Silencing Delivery, and Aptamer Function.
abstract: We report herein discrete triplex hybridization of DNA and RNA with polyacrylates. Length-monodisperse triazine-derivatized polymers were prepared on gram-scale by reversible addition-fragmentation chain-transfer polymerization. Despite stereoregio backbone heterogeneity, the triazine polymers bind T/U-rich DNA or RNA with nanomolar affinity upon mixing in a 1:1 ratio, as judged by thermal melts, circular dichroism, gel-shift assays, and fluorescence quenching. We call these polyacrylates "bifacial polymer nucleic acids" (bPoNAs). Nucleic acid hybridization with bPoNA enables DNA loading onto polymer nanoparticles, siRNA silencing delivery, and can further serve as an allosteric trigger of RNA aptamer function. Thus, bPoNAs can serve as tools for both non-covalent bioconjugation and structure-function nucleation. It is anticipated that bPoNAs will have utility in both bio- and nanotechnology.
authors.affiliation: Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210, United States.
authors.forename: Zhun
authors.initials: Z
authors.lastname: Zhou
authors.affiliation: Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210, United States.
authors.forename: Xin
authors.initials: X
authors.lastname: Xia
authors.affiliation: Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210, United States.
authors.forename: Dennis
authors.initials: D
authors.lastname: Bong
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D052157:Aptamers, Nucleotide / Q000737:chemistry*; D004247:DNA / Q000737:chemistry*; D006367:HeLa Cells; D006801:Humans; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D009693:Nucleic Acid Hybridization; D058105:Polymerization; D012313:RNA / Q000737:chemistry*; D034622:RNA Interference; D034741:RNA, Small Interfering / Q000008:administration & dosage* / Q000737:chemistry / Q000235:genetics; D014227:Triazines / Q000737:chemistry*
chemical_list: D000180:Acrylic Resins; D052157:Aptamers, Nucleotide; D034741:RNA, Small Interfering; D014227:Triazines; C006903:carbopol 940; D012313:RNA; D004247:DNA