Evidence map›Paper›PMID 21424159›Full record

ArticlePharmaceutical research2011

DNA nuclear targeting sequences for non-viral gene delivery.

Ethlinn V B van Gaal, Ronald S Oosting, Roel van Eijk, Marta Bakowska, Dries Feyen, Robbert Jan Kok, Wim E Hennink, Daan J A Crommelin, Enrico Mastrobattista

Open access · hybridAbstract read
In one paragraph

Article in Pharmaceutical research, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
1.9field-weighted citation impact, top 15% 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, 54 citations in OpenAlex.

  1. Review
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  4. Plugging synthetic DNA nanoparticles into the central dogma of life.Chemical communications (Cambridge, England) · 2024
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 1 institution in 1 country.

Ethlinn V B van GaalDepartment of Pharmaceutics, Utrecht Institute of Pharmaceutical Sciences, Utrecht University, 3584 CA, Utrecht, The Netherlands.
Ronald S Oosting
Roel van Eijk
Marta Bakowska
Dries Feyen
Robbert Jan Kok
Wim E Hennink
Daan J A Crommelin
Enrico Mastrobattista
Utrecht University · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo evaluate if introduction of DNA nuclear Targeting Sequences (DTS; i.e. recognition sequences for endogenous DNA-binding proteins) in plasmid DNA (pDNA) leads to increased transfection efficiency of non-viral gene delivery by virtue of enhanced nuclear import of the pDNA.

methodsA set of DTS was identified and cloned into EGFP-reporter plasmids controlled by the CMV-promoter. These pDNA constructs were delivered into A431 and HeLa cells using standard electroporation, pEI-based polyfection or lipofection methods. The amount of pDNA delivered into the nucleus was determined by qPCR; transfection efficiency was determined by flow cytometry.

resultsNeither of these DTS increased transgene expression. We varied several parameters (mitotic activity, applied dose and delivery strategy), but without effect. Although upregulated transgene expression was observed after stimulation with TNF-α, this effect could be ascribed to non-specific upregulation of transcription rather than enhanced nuclear import. Nuclear copy numbers of plasmids containing or lacking a DTS did not differ significantly after lipofectamine-based transfection in dividing and non-dividing cells.

conclusionNo beneficial effects of DTS on gene expression or nuclear uptake were observed in this study.

Indexed as

Cell NucleusGene Transfer TechniquesBase SequenceCell Line, TumorElectroporationFlow CytometryGenetic VectorsHeLa CellsHumansMolecular Sequence DataPlasmidsPolymerase Chain Reaction

Identifiers

PMID21424159
PMCPMC3109246
OpenAlexW2071296097

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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.