Evidence map›Paper›PMID 26453169›Full record

ArticleJournal of drug targeting2015

Systemic delivery of blood-brain barrier-targeted polymeric nanoparticles enhances delivery to brain tissue.

Jennifer K Saucier-Sawyer, Yang Deng, Young-Eun Seo, Christopher J Cheng, Junwei Zhang, Elias Quijano, W Mark Saltzman

Open access · greenAbstract readComparative Study
In one paragraph

Article in Journal of drug targeting, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
3.6field-weighted citation impact, top 7% 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

38 citing papers in PubMed, 94 citations in OpenAlex.

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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

7 authors at 2 institutions in 2 countries.

Jennifer K Saucier-Sawyera Department of Biomedical Engineering .
Yang Denga Department of Biomedical Engineering .
Young-Eun Seoa Department of Biomedical Engineering .
Christopher J Chenga Department of Biomedical Engineering .
Junwei Zhangc Department of Chemical Engineering , Yale University , New Haven , CT , USA.
Elias Quijanoa Department of Biomedical Engineering .
W Mark Saltzmana Department of Biomedical Engineering .
Institut thématique Génétique, génomique et bioinformatique · FRYale University · US

Funding

IMMUNOHEMATOLOGY/TRANSFUSION MEDICINE RESEARCH TRAININGT32HL007974 · NHLBI · YALE UNIVERSITY · PI JEANNE E HENDRICKSON, Diane S Krause · 2001 to 2026
$8.1M
CED of Nanoparticles Loading with Novel Agents for Improved Treatment of GliomasR01CA149128 · NCI · YALE UNIVERSITY · PI SALTZMAN, W. MARK · 2011 to 2020
$3.5M
CPE Peptide-Based Nanoparticles for the Diagnosis and Therapy of Chemotherapy ResR01CA154460 · NCI · YALE UNIVERSITY · PI SANTIN, ALESSANDRO D · 2011 to 2015
$1.7M
Yale University Clinical and Translational Science Award ProgramTL1TR000141 · NCATS · YALE UNIVERSITY · PI SHERWIN, ROBERT S · 2012 to 2015
$720k
NCATS NIH HHS TL1 TR000141NCATS NIH HHS TL1-TR000141NCI NIH HHS R01 CA149128NCI NIH HHS R01 CA154460NCI NIH HHS R01-CA154460NHLBI NIH HHS T32 HL007974
6 · The paper itself

Abstract

Delivery of therapeutic agents to the central nervous system is a significant challenge, hindering progress in the treatment of diseases such as glioblastoma. Due to the presence of the blood-brain barrier (BBB), therapeutic agents do not readily transverse the brain endothelium to enter the parenchyma. Previous reports suggest that surface modification of polymer nanoparticles (NPs) can improve their ability to cross the BBB, but it is unclear whether the observed enhancements in transport are large enough to enhance therapy. In this study, we synthesized two degradable polymer NP systems surface-modified with ligands previously suggested to improve BBB transport, and tested their ability to cross the BBB after intravenous injection in mice. All the NP preparations were able to cross the BBB, although generally in low amounts (<0.5% of the injected dose), which was consistent with prior reports. One NP produced significantly higher brain uptake (∼0.8% of the injected dose): a block copolymer of polylactic acid and hyperbranched polyglycerol, surface modified with adenosine (PLA-HPG-Ad). PLA-HPG-Ad NPs provided controlled release of camptothecin, killing U87 glioma cells in culture. When administered intravenously in mice with intracranial U87 tumors, they failed to increase survival. These results suggest that enhancing NP transport across the BBB does not necessarily yield proportional pharmacological effects.

Indexed as

Drug Delivery SystemsNanoparticlesAnimalsAntineoplastic Agents, PhytogenicBiological TransportBlood-Brain BarrierBrainBrain NeoplasmsCamptothecinCell Line, TumorDelayed-Action PreparationsDrug CarriersGliomaHumansInjections, IntravenousMiceAntineoplastic Agents, PhytogenicCamptothecinDelayed-Action PreparationsDrug CarriersPolymersAdenosineblood–brain barrierDSPE-PEGhyperbranched polyglycerolpoly(lactic acid)poly(lactide-co-glycolide)polymeric nanoparticles

Identifiers

PMID26453169
PMCPMC4860350
OpenAlexW2171802467

What OpenQuestion holds

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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.