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Gold nanoparticle-assisted delivery of small, highly structured RNA into the nuclei of human cells.

Abstract：

:Previous studies have shown that functionalized gold nanoparticles (AuNPs) can be used as a general platform for loading and delivering DNA oligonucleotides and short hairpin RNA to living systems. Here, we report the ability of functionalized AuNP to deliver RNA aptamers into the nuclei of human cells. An in vitro-synthesized RNA aptamer specific to the β-catenin protein was delivered into the HepG2 human cell line more efficiently via functionalized AuNP than liposome-based delivery, and resulted in nearly complete inhibition of β-catenin binding to the p50 subunit of NF-κB in the nucleus. This inhibition led to repression of NF-κB p50-dependent transcription of CRP. Also, the β-catenin aptamer in the nucleus led to down-regulation of β-catenin-mediated transcriptional activity through the TCF complex and resulted in decrease in the levels of cyclin D, and c-myc mRNA by ~47% and ~57%, respectively. In addition, we used functionalized AuNP to deliver another RNA aptamer targeted to the p50 subunit of NF-κB into the A549 human cell line, and this was sufficient to induce apoptosis of the cells. Our findings demonstrate that AuNP GDS can be used to deliver small, highly structured RNA aptamers into the nucleus of human cells where they modulate the activity of transactivators by interacting with target proteins.

journal_name

Biochem Biophys Res Commun

journal_title

Biochemical and biophysical research communications

authors

Ryou SM,Kim JM,Yeom JH,Hyun S,Kim S,Han MS,Kim SW,Bae J,Rhee S,Lee K

doi

10.1016/j.bbrc.2011.11.020

subject

Has Abstract

pub_date

2011-12-09 00:00:00

pages

178-83

issue

1-2

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(11)02019-5

journal_volume

416

pub_type

杂志文章

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