Evidence map›Paper›PMID 31199881›Full record

ArticleMolecular pharmaceutics2019

Plasma Pharmacokinetics of High-Affinity Transferrin Receptor Antibody-Erythropoietin Fusion Protein is a Function of Effector Attenuation in Mice.

Jiahong Sun, Ruben J Boado, William M Pardridge, Rachita K Sumbria

Open access · greenAbstract read
In one paragraph

Article in Molecular pharmaceutics, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.3field-weighted citation impact, top 20% 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

14 citing papers in PubMed, 21 citations in OpenAlex.

  1. Antibody-Based Biologics for CNS Disorders.Antibodies (Basel, Switzerland) · 2026
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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

4 authors at 3 institutions in 1 country.

Jiahong SunDepartment of Biopharmaceutical Sciences, School of Pharmacy and Health Sciences , Keck Graduate Institute , Claremont , California 91711 , United States.
Ruben J BoadoArmaGen, Incorporation , Agoura Hills , California 91301 , United States.
William M PardridgeArmaGen, Incorporation , Agoura Hills , California 91301 , United States.ORCID 0000-0002-2664-1338
Rachita K SumbriaDepartment of Biopharmaceutical Sciences, School of Pharmacy and Health Sciences , Keck Graduate Institute , Claremont , California 91711 , United States.ORCID 0000-0002-7459-0723
ArmaGen (United States) · USKeck Graduate Institute · USUniversity of California, Irvine · US

Funding

Re-engineering Erythropoietin for Alzheimer's DiseaseR21AG055949 · NIA · KECK GRADUATE INST OF APPLIED LIFE SCIS · PI SUMBRIA, RACHITA · 2017 to 2018
$382k
NIA NIH HHS R21 AG055949
6 · The paper itself

Abstract

Erythropoietin (EPO) is a potential therapeutic for Alzheimer's disease (AD); however, limited blood-brain barrier (BBB) penetration reduces its applicability as a CNS therapeutic. Antibodies against the BBB transferrin receptor (TfRMAbs) act as molecular Trojan horses for brain drug delivery, and a fusion protein of EPO and TfRMAb, designated TfRMAb-EPO, is protective in a mouse model of AD. TfRMAbs have Fc effector function side effects, and removal of the Fc N-linked glycosylation site by substituting Asn with Gly reduces the Fc effector function. However, the effect of such Fc mutations on the pharmacokinetics (PK) of plasma clearance of TfRMAb-based fusion proteins, such as TfRMAb-EPO, is unknown. To examine this, the plasma PK of TfRMAb-EPO (wild-type), which expresses the mouse IgG1 constant heavy chain region and includes the Asn residue at position 292, was compared to the mutant TfRMAb-N292G-EPO, in which the Asn residue at position 292 is mutated to Gly. Plasma PK was compared following IV, IP, and SQ administration for doses between 0.3 and 3 mg/kg in adult male C57 mice. The results show a profound increase in clearance (6- to 8-fold) of the TfRMAb-N292G-EPO compared with the wild-type TfRMAb-EPO following IV administration. The clearance of both the wild-type and mutant TfRMAb-EPO fusion proteins followed nonlinear PK, and a 10-fold increase in dose resulted in a 7- to 11-fold decrease in plasma clearance. Following IP and SQ administration, the

Indexed as

Alzheimer DiseaseAnimalsAntibodies, MonoclonalBlood-Brain BarrierCell LineEndothelial CellsErythropoietinHumansImmunoconjugatesImmunoglobulin Constant RegionsImmunoglobulin GInjections, IntravenousInjections, SubcutaneousMaleMiceMutationAntibodies, MonoclonalEPO protein, humanErythropoietinImmunoconjugatesImmunoglobulin Constant RegionsImmunoglobulin GReceptors, TransferrinRecombinant Fusion Proteinsblood−brain barrierFc effector function side effectsmolecular Trojan horsespharmacokineticstransferrin receptor

Identifiers

PMID31199881
PMCPMC6684820
OpenAlexW2950470556

What OpenQuestion holds

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Registered trials

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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.