Evidence map›Paper›PMID 25530259›Full record

ArticleAdvanced healthcare materials2015

Light-mediated activation of siRNA Release in diblock copolymer assemblies for controlled gene silencing.

Abbygail A Foster, Chad T Greco, Matthew D Green, Thomas H Epps, Millicent O Sullivan

Erratum issuedOpen access · greenAbstract read
In one paragraph

Article in Advanced healthcare materials, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
2.6field-weighted citation impact, top 10% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

23 citing papers in PubMed, 40 citations in OpenAlex.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Abbygail A FosterDepartment of Chemical and Biomolecular Engineering, Newark, DE, 19716, USA.
Chad T Greco
Matthew D Green
Thomas H Epps
Millicent O Sullivan
Fraunhofer USA Center for Molecular Biotechnology · US

Funding

Pilot Research Subproject ProgramP30GM110758 · NIGMS · UNIVERSITY OF DELAWARE · PI BAI, STEVE · 2014 to 2018
$5.8M
Molecular Design of Advanced BiomaterialsP20GM103541 · NIGMS · UNIVERSITY OF DELAWARE · PI POLENOVA, TATYANA · 2012 to 2012
$2.1M
NIGMS NIH HHS P20 GM103541NIGMS NIH HHS P20GM103541NIGMS NIH HHS P30 GM110758
6 · The paper itself

Abstract

Controllable release is particularly important for the delivery of small interfering RNA (siRNA), as siRNAs have a high susceptibility to enzymatic degradation if release is premature, yet lack silencing activity if they remain inaccessible within the cytoplasm. To overcome these hurdles, novel and tailorable mPEG-b-poly(5-(3-(amino)propoxy)-2-nitrobenzyl methacrylate) (mPEG-b-P(APNBMA)) diblock copolymers containing light-sensitive o-nitrobenzyl moieties and pendant amines are employed to provide both efficient siRNA binding, via electrostatic and hydrophobic interactions, as well as triggered charge reversal and nucleic acid release. In particular, siRNA/mPEG-b-P(APNBMA)23.6 polyplexes show minimal aggregation in physiological salt and serum, and enhanced resistance to polyanion-induced unpackaging compared to polyethylenimine preparations. Cellular delivery of siRNA/mPEG-b-P(APNBMA)23.6 polyplexes reveals greater than 80% cellular transfection, as well as rapid and widespread cytoplasmic distribution. Additionally, UV irradiation indicates ≈70% reduction in targeted gene expression following siRNA/mPEG-b-P(APNBMA)23.6 polyplex treatment, as compared to 0% reduction in polyplex-treated cells without UV irradiation, and only ≈30% reduction for Lipofectamine-treated cells. The results here highlight the potential of these light-sensitive copolymers with a well-defined on/off switch for applications including cellular patterning for guided cell growth and extension, and cellular microarrays for exploring protein and drug interactions that require enhanced spatiotemporal control of gene activation.

Indexed as

AnimalsCell Line, TumorCell SurvivalDrug CarriersGene SilencingHumansMiceNIH 3T3 CellsPolyethylene GlycolsRNA, Small InterferingDrug CarriersPolyethylene GlycolsRNA, Small Interferingdiblock copolymersphotoresponsivenesspolyplexesRNA interferencesiRNA

Identifiers

PMID25530259
PMCPMC4429132
OpenAlexW2064904826

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.