Evidence map›Paper›PMID 34149342›Full record

ArticleFrontiers in neuroscience2021

Discovery of a Highly Conserved Peptide in the Iron Transporter Melanotransferrin that Traverses an Intact Blood Brain Barrier and Localizes in Neural Cells.

Chaahat S B Singh, Brett A Eyford, Thomas Abraham, Lonna Munro, Kyung Bok Choi, Mark Okon, Timothy Z Vitalis, Reinhard Gabathuler, Chieh-Ju Lu, Cheryl G Pfeifer and 2 more

Open access · goldAbstract read
In one paragraph

Article in Frontiers in neuroscience, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
1.0field-weighted citation impact, top 30% 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

17 citing papers in PubMed, 21 citations in OpenAlex.

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  8. Rescue of neurologic disease in mucopolysaccharidosis type II mice via AAV-mediated liver delivery of brain-penetrating iduronate-2-sulfatase.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2025
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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

12 authors at 6 institutions in 3 countries.

Chaahat S B SinghMichael Smith Laboratories, University of British Columbia, Vancouver, BC, Canada.
Brett A EyfordMichael Smith Laboratories, University of British Columbia, Vancouver, BC, Canada.
Thomas AbrahamDepartment of Neural and Behavioral Sciences and Microscopy Imaging Core Lab, Pennsylvania State College of Medicine, Hershey, PA, United States.
Lonna MunroMichael Smith Laboratories, University of British Columbia, Vancouver, BC, Canada.
Kyung Bok ChoiMichael Smith Laboratories, University of British Columbia, Vancouver, BC, Canada.
Mark OkonDepartment of Chemistry, University of British Columbia, Vancouver, BC, Canada.
Timothy Z VitalisBioasis Technologies Inc., Guilford, CT, United States.
Reinhard GabathulerBioasis Technologies Inc., Guilford, CT, United States.
Chieh-Ju LuMichael Smith Laboratories, University of British Columbia, Vancouver, BC, Canada.
Cheryl G PfeiferMichael Smith Laboratories, University of British Columbia, Vancouver, BC, Canada.
Mei Mei TianBioasis Technologies Inc., Guilford, CT, United States.
Wilfred A JefferiesMichael Smith Laboratories, University of British Columbia, Vancouver, BC, Canada.
University of British Columbia · CAVancouver Coastal Health · CAVancouver General Hospital · CACanada's Michael Smith Genome Sciences Centre · CAHershey (United States) · USKing's College London · GB

Funding

Nikon A1 MP+ Multiphoton Microscope for Deep Tissue ImagingS10OD018124 · OD · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI ABRAHAM, THOMAS · 2015 to 2015
$597k
Leica SP5 confocal microscope for live-cell imagingS10OD010756 · OD · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI BARNSTABLE, COLIN J · 2012 to 2012
$587k
NIH HHS S10 OD010756NIH HHS S10 OD018124
6 · The paper itself

Abstract

The blood-brain barrier (BBB) hinders the distribution of therapeutics intended for treatment of diseases of the brain. Our previous studies demonstrated that that a soluble form of melanotransferrin (MTf; Uniprot P08582; also known as p97, MFI2, and CD228), a mammalian iron-transport protein, is an effective carrier for delivery of drug conjugates across the BBB into the brain and was the first BBB targeting delivery system to demonstrate therapeutic efficacy within the brain. Here, we performed a screen to identify peptides from MTf capable of traversing the BBB. We identified a highly conserved 12-amino acid peptide, termed MTfp, that retains the ability to cross the intact BBB intact, distributes throughout the parenchyma, and enter endosomes and lysosomes within neurons, astrocytes and microglia in the brain. This peptide may provide a platform for the transport of therapeutics to the CNS, and thereby offers new avenues for potential treatments of neuropathologies that are currently refractory to existing therapies.

Indexed as

blood-brain barrerdrug delivery and targetingglial targetingmelanotransferrinmicroglial targetingMTfpneuronal targetingpeptide transport

Identifiers

PMID34149342
PMCPMC8212695
OpenAlexW3172879464

What OpenQuestion holds

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LicenceCC BY
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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.