Evidence map›Paper›PMID 22800579›Full record

ArticleJournal of controlled release : official journal of the Controlled Release Society2012

Lipid peptide nanocomplexes for gene delivery and magnetic resonance imaging in the brain.

Michele J Writer, Panagiotis G Kyrtatos, Alison S Bienemann, John A Pugh, Andrew S Lowe, Claudio Villegas-Llerena, Gavin D Kenny, Edward A White, Steven S Gill, Cameron W McLeod and 2 more

Abstract read
In one paragraph

Article in Journal of controlled release : official journal of the Controlled Release Society, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
–field-weighted citation impact
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

12 citing papers in PubMed.

  1. Nucleic acid drug vectors for diagnosis and treatment of brain diseases.Signal transduction and targeted therapy · 2023
    Review
  2. Review
  3. Article
  4. Review
  5. Article
  6. Biodegradable brain-penetrating DNA nanocomplexes and their use to treat malignant brain tumors.Journal of controlled release : official journal of the Controlled Release Society · 2017
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Lipid nanoparticles for gene delivery.Advances in genetics · 2014
    Review
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

12 authors.

Michele J WriterMolecular Immunology Unit, UCL Institute of Child Health, London WC1N 1EH, UK.
Panagiotis G Kyrtatos
Alison S Bienemann
John A Pugh
Andrew S Lowe
Claudio Villegas-Llerena
Gavin D Kenny
Edward A White
Steven S Gill
Cameron W McLeod
Mark F Lythgoe
Stephen L Hart

Funding

Biotechnology and Biological Sciences Research Council BB/D014727/1Medical Research Council G0601745
6 · The paper itself

Abstract

Gadolinium-labelled nanocomplexes offer prospects for the development of real-time, non-invasive imaging strategies to visualise the location of gene delivery by MRI. In this study, targeted nanoparticle formulations were prepared comprising a cationic liposome (L) containing a Gd-chelated lipid at 10, 15 and 20% by weight of total lipid, a receptor-targeted, DNA-binding peptide (P) and plasmid DNA (D), which electrostatically self-assembled into LPD nanocomplexes. The LPD formulation containing the liposome with 15% Gd-chelated lipid displayed optimal peptide-targeted, transfection efficiency. MRI conspicuity peaked at 4h after incubation of the nanocomplexes with cells, suggesting enhancement by cellular uptake and trafficking. This was supported by time course confocal microscopy analysis of transfections with fluorescently-labelled LPD nanocomplexes. Gd-LPD nanocomplexes delivered to rat brains by convection-enhanced delivery were visible by MRI at 6 h, 24 h and 48 h after administration. Histological brain sections analysed by laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) confirmed that the MRI signal was associated with the distribution of Gd(3+) moieties and differentiated MRI signals due to haemorrhage. The transfected brain cells near the injection site appeared to be mostly microglial. This study shows the potential of Gd-LPD nanocomplexes for simultaneous delivery of contrast agents and genes for real-time monitoring of gene therapy in the brain.

Indexed as

AnimalsBrainCell Line, TumorContrast MediaDNAFatty Acids, MonounsaturatedGadoliniumGlycosyltransferasesHumansMagnetic Resonance ImagingMaleNanoparticlesPeptidesPhosphatidylethanolaminesQuaternary Ammonium CompoundsRats1,2-dioleoyl-glycero-3-phosphatidyl ethanolamine1,2-dioleoyloxy-3-(trimethylammonium)propaneContrast MediaDNAFatty Acids, MonounsaturatedGadoliniumGlycosyltransferasespeptide PPeptidesPhosphatidylethanolaminesQuaternary Ammonium Compounds

Identifiers

PMID22800579
PMCPMC3657147

What OpenQuestion holds

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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.