RRC ID 54823
著者 Yoshinaga N, Uchida S, Naito M, Osada K, Cabral H, Kataoka K.
タイトル Induced packaging of mRNA into polyplex micelles by regulated hybridization with a small number of cholesteryl RNA oligonucleotides directed enhanced in vivo transfection.
ジャーナル Biomaterials
Abstract There has been a progressive interest in the molecular design of polymers and lipids as synthetic carriers for targeting therapeutic mRNA in vivo with the ability to circumvent nuclease attack for treating intractable diseases. Herein, we developed a simple approach to attain one order of magnitude higher nuclease tolerability of mRNA through the formation of polyplex micelles (PMs) by combining ω-cholesteryl (ω-Chol)-poly (ethylene-glycol) (PEG)-polycation block copolymers with mRNA pre-hybridized with cholesterol (Chol)-tethered RNA oligonucleotides (Chol (+)-OligoRNA). Even one or a few short Chol (+)-OligoRNA anchors harboring along the 46-fold longer mRNA strand was sufficient to induce tight mRNA packaging in the PM core, as evidenced by Förster resonance energy transfer (FRET) measurement as well as by a longitudinal relaxation time (T1) measurement using NMR. These results suggest that Chol (+)-OligoRNA on mRNA strand serves as a node to attract ω-Chol moiety of the block copolymers to tighten the mRNA packaging in the PM core. These mRNA loaded PMs showed high tolerability against nuclease attack, and exerted appreciable protein translational activity in cultured cells without any inflammatory responses, achieved by shortening of the length of hybridizing Chol (+)-OligoRNAs to 17 nucleotides. Finally, the Chol (+)-OligoRNA-stabilized PM revealed efficient mRNA introduction into the mouse lungs via intratracheal administration, demonstrating in vivo utility of this formulation.
巻・号 197
ページ 255-267
公開日 2019-3-1
DOI 10.1016/j.biomaterials.2019.01.023
PII S0142-9612(19)30041-9
PMID 30669016
MeSH Animals Cells, Cultured Cholesterol / administration & dosage* Drug Carriers Female Fluorescence Resonance Energy Transfer Humans Mice Mice, Inbred BALB C Micelles* Oligoribonucleotides / administration & dosage* Polyethylene Glycols / administration & dosage* Polyethylene Glycols / chemistry Protein Biosynthesis RNA, Messenger / administration & dosage* Ribonucleases / metabolism Trachea Transfection / methods*
IF 10.273
引用数 5
リソース情報
ヒト・動物細胞 RAW 264(RCB0535)