title: Engineering RNA-protein complexes with different shapes for imaging and therapeutic applications.
abstract: Molecular machines composed of RNA–protein (RNP) complexes may expand the fields of molecular robotics, nanomedicine, and synthetic biology. However, constructing and directly visualizing a functional RNP nanostructure to detect and control living cell function remains a challenge. Here we show that RNP nanostructures with modular functions can be designed and visualized at single-RNP resolution in real time. The RNP structural images collected in solution through high-speed atomic force microscopy showed that a single RNP interaction induces a conformational change in the RNA scaffold, which supports the nanostructure formation designed. The specific RNP interaction also improved RNA nanostructure stability in a serum-containing buffer. We developed and visualized functional RNPs (e.g., to detect human cancer cells or knockdown target genes) by attaching a protein or RNA module to the same RNA scaffold of an optimal size. The synthetic RNP architecture may provide alternative materials to detect and control functions in target mammalian cells.
authors: Eriko
authors: E
authors: Osada
authors: Yuki
authors: Y
authors: Suzuki
authors: Kumi
authors: K
authors: Hidaka
authors: Hirohisa
authors: H
authors: Ohno
authors: Hiroshi
authors: H
authors: Sugiyama
authors: Masayuki
authors: M
authors: Endo
authors: Hirohide
authors: H
authors: Saito
mesh_terms: D045744:Cell Line, Tumor; D006801:Humans; D008958:Models, Molecular; D057054:Molecular Imaging; D049329:Nanostructures / Q000737:chemistry / Q000627:therapeutic use*; D036103:Nanotechnology / Q000379:methods*; D009690:Nucleic Acid Conformation; D011487:Protein Conformation; D012313:RNA / Q000737:chemistry* / Q000378:metabolism; D020871:RNA Stability; D034741:RNA, Small Interfering / Q000737:chemistry / Q000235:genetics; D016601:RNA-Binding Proteins / Q000737:chemistry* / Q000378:metabolism; D013997:Time Factors
chemical_list: D034741:RNA, Small Interfering; D016601:RNA-Binding Proteins; D012313:RNA