Evidence map›Paper›PMID 20824308›Full record

ArticlePharmaceutical research2010

Multifunctional peptide-PEG intercalating conjugates: programmatic of gene delivery to the blood-brain barrier.

Hongwei Zhang, Trevor Gerson, Michelle L Varney, Rakesh K Singh, Serguei V Vinogradov

Open access · greenAbstract read
In one paragraph

Article in Pharmaceutical research, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.2field-weighted citation impact, top 23% 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

13 citing papers in PubMed, 28 citations in OpenAlex.

  1. Article
  2. Review
  3. Brain Targeting Nanomedicines: Pitfalls and Promise.International journal of nanomedicine · 2024
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  5. Article
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  8. Acta pharmaceutica Sinica. B · 2021
    Review
  9. Review
  10. Polyethylenimine-based micro/nanoparticles as vaccine adjuvants.International journal of nanomedicine · 2017
    Review
  11. Article
  12. Amphiphilic cationic nanogels as brain-targeted carriers for activated nucleoside reverse transcriptase inhibitors.Journal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology · 2015
    Article
  13. 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

5 authors at 2 institutions in 1 country.

Hongwei ZhangCenter for Drug Delivery and Nanomedicine and Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, Nebraska 68198, USA.
Trevor Gerson
Michelle L Varney
Rakesh K Singh
Serguei V Vinogradov
University of Nebraska Medical Center · USNebraska Medical Center · US

Funding

Bioengineering of the blood-brain barrier permeabilityR01NS050660 · NINDS · UNIVERSITY OF NEBRASKA MEDICAL CENTER · PI VINOGRADOV, SERGUEI V · 2005 to 2008
$813k
Nanodelivery of active NRTI to the central nervous system: humanized HIV murine mR21NS063879 · NINDS · UNIVERSITY OF NEBRASKA MEDICAL CENTER · PI VINOGRADOV, SERGUEI V · 2008 to 2009
$387k
NINDS NIH HHS NS050660NINDS NIH HHS NS063879NINDS NIH HHS R01 NS050660NINDS NIH HHS R21 NS063879
6 · The paper itself

Abstract

purposeTo enhance transfection efficacy of pDNA through the application of multifunctional peptide-PEG-tris-acridine conjugates (pPAC) and the formation of biodegradable core-shell polyplexes for gene delivery to the blood-brain barrier (BBB).

methodspPAC-mediated transfection was compositionally optimized in mouse BBB cells (bEnd.3). Cellular uptake and trafficking, and brain accumulation of pDNA was evaluated by fluorescent imaging and histochemistry. We constructed anti-MRP4 siRNA-producing vectors and evaluated the efficacy of MRP4 down-regulation of MRP4 by Western blot and qPCR, and its effect on the uptake of (3)H-AZT, an MRP4 substrate.

resultsA core-shell gene delivery system (GDS) was assembled from pDNA and pPAC, carrying multifunctional peptides with NLS, TAT, and brain-specific BH, or ApoE sequences, and biodegradable pLPEI polyamine. This GDS demonstrated better cellular and nuclear accumulation, and a 25-fold higher transfection efficacy in slow-dividing bEnd.3 cells compared to ExGen500. Inclusion of brain-targeting pPAC enhanced in vivo accumulation of functional pDNA in brain capillaries. Treatment by encapsulated anti-MRP4 siRNA-producing pDNA caused transient down-regulation of MRP4, and, after intravenous injection in Balb/c mice, enhanced AZT uptake in the brain by 230-270%.

conclusionsThe pPAC represent novel efficient components of GDS that could find various gene therapy applications, including genetic modulation of the BBB.

Indexed as

Blood-Brain BarrierGene Transfer TechniquesAmino Acid SequenceAnimalsATP-Binding Cassette, Sub-Family C ProteinsBlotting, WesternBrainCell LineDNADown-RegulationGenetic VectorsMiceMice, Inbred BALB CMolecular Sequence DataPeptidesPolyethylene GlycolsAbcc4 protein, mouseATP-Binding Cassette, Sub-Family C ProteinsDNAPeptidesPolyethylene GlycolsRNA, Small InterferingZidovudine

Identifiers

PMID20824308
PMCPMC2998179
OpenAlexW1982396030

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.