@article{oai:repo.qst.go.jp:00084454,
 author = {Yoshinaga, Naoto and Uchida, Satoshi and Dirisala, Anjaneyulu and Naito, Mitsuru and Koji, Kyoko and Osada, Kensuke and Cabral, Horacio and Kataoka, Kazunori and Kensuke, Osada},
 issue = {9},
 journal = {Advanced healthcare materials},
 month = {Dec},
 note = {Polyplex for mRNA delivery requires strong yet reversible association between mRNA and polycation for extracellular robustness and selective intracellular disintegration. Herein, RNA oligonucleotide (OligoRNA) derivatives that bridge mRNA and polycation are developed to stabilize polyplex micelles (PMs). A set of the OligoRNAs introduced with a polyol moiety in their 5' end is designed to hybridize to fixed positions along mRNA strand. After PM preparation from the hybridized mRNA and poly(ethylene glycol) (PEG)-polycation block copolymer derivatized with phenylboronic acid (PBA) moieties in its cationic segment, PBA moieties form reversible phenylboronate ester linkages with a polyol moiety at 5' end of OligoRNAs and a diol moiety at their 3' end ribose, in the PM core. The OligoRNAs work as a node to bridge ionically complexed mRNA and polycation, thereby improving PM stability against polyion exchange reaction and ribonuclease attack in extracellular environment. After cellular uptake, intracellular high concentration of adenosine triphosphate (ATP) triggers the cleavage of phenylboronate ester linkages, resulting in mRNA release from PM. Ultimately, the PM provides efficient mRNA introduction in cultured cells and mouse lungs after intratracheal administration, demonstrating the potential of the bridging strategy in polyplex-based mRNA delivery. This article is protected by copyright. All rights reserved.},
 title = {Bridging mRNA and Polycation using RNA Oligonucleotide Derivatives Improves the Robustness of Polyplex Micelles for Efficient mRNA Delivery.},
 volume = {11},
 year = {2021}
}