Evidence map›Paper›PMID 32703811›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2020

Targeting nanoparticles to the brain by exploiting the blood-brain barrier impermeability to selectively label the brain endothelium.

Daniel Gonzalez-Carter, Xueying Liu, Theofilus A Tockary, Anjaneyulu Dirisala, Kazuko Toh, Yasutaka Anraku, Kazunori Kataoka

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 61 papers.

0numbers the graph read from it
0cells of the map it votes in
61citing papers in PubMed
7.7field-weighted citation impact, top 2% 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

61 citing papers in PubMed, 128 citations in OpenAlex.

  1. Hypothalamic wars: the last nanodelivery.Reviews in endocrine & metabolic disorders · 2026
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  16. Emerging Perspectives on Prime Editor Delivery to the Brain.Pharmaceuticals (Basel, Switzerland) · 2024
    Review
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  20. Article

1 more citing papers are in PubMed but not listed here.

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 1 institution in 1 country.

Daniel Gonzalez-CarterInnovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, 210-0821 Kawasaki, Japan; daniel.gonzalezcarter08@alumni.imperial.ac.uk kataoka@ifi.u-tokyo.ac.jp.ORCID 0000-0003-4249-7062
Xueying LiuInnovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, 210-0821 Kawasaki, Japan.ORCID 0000-0002-7901-5744
Theofilus A TockaryInnovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, 210-0821 Kawasaki, Japan.ORCID 0000-0002-2736-2058
Anjaneyulu DirisalaInnovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, 210-0821 Kawasaki, Japan.ORCID 0000-0003-1566-7142
Kazuko TohInnovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, 210-0821 Kawasaki, Japan.
Yasutaka AnrakuInnovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, 210-0821 Kawasaki, Japan.
Kazunori KataokaInnovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, 210-0821 Kawasaki, Japan; daniel.gonzalezcarter08@alumni.imperial.ac.uk kataoka@ifi.u-tokyo.ac.jp.ORCID 0000-0002-8591-413X
Innovation Center of NanoMedicine · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Current strategies to direct therapy-loaded nanoparticles to the brain rely on functionalizing nanoparticles with ligands which bind target proteins associated with the blood-brain barrier (BBB). However, such strategies have significant brain-specificity limitations, as target proteins are not exclusively expressed at the brain microvasculature. Therefore, novel strategies which exploit alternative characteristics of the BBB are required to overcome nonspecific nanoparticle targeting to the periphery, thereby increasing drug efficacy and reducing detrimental peripheral side effects. Here, we present a simple, yet counterintuitive, brain-targeting strategy which exploits the higher impermeability of the BBB to selectively label the brain endothelium. This is achieved by harnessing the lower endocytic rate of brain endothelial cells (a key feature of the high BBB impermeability) to promote selective retention of free, unconjugated protein-binding ligands on the surface of brain endothelial cells compared to peripheral endothelial cells. Nanoparticles capable of efficiently binding to the displayed ligands (i.e., labeled endothelium) are consequently targeted specifically to the brain microvasculature with minimal "off-target" accumulation in peripheral organs. This approach therefore revolutionizes brain-targeting strategies by implementing a two-step targeting method which exploits the physiology of the BBB to generate the required brain specificity for nanoparticle delivery, paving the way to overcome targeting limitations and achieve clinical translation of neurological therapies. In addition, this work demonstrates that protein targets for brain delivery may be identified based not on differential tissue expression, but on differential endocytic rates between the brain and periphery.

Indexed as

AnimalsBiological TransportBlood-Brain BarrierBrainDrug CarriersDrug Delivery SystemsEndothelial CellsEndotheliumHumansNanoparticlesRatsRats, Sprague-DawleyDrug Carriersblood–brain barrierbrain-specific target generationdifferential endocytic ratemicrovasculature labelingnanoparticle brain delivery

Identifiers

PMID32703811
PMCPMC7431083
OpenAlexW3044714364

What OpenQuestion holds

Textmetadata
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.