Evidence map›Paper›PMID 24825898›Full record

ArticleThe Journal of biological chemistry2014

A neuroprotective brain-penetrating endopeptidase fusion protein ameliorates Alzheimer disease pathology and restores neurogenesis.

Brian Spencer, Inder Verma, Paula Desplats, Dinorah Morvinski, Ed Rockenstein, Anthony Adame, Eliezer Masliah

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.8field-weighted citation impact, top 8% 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

22 citing papers in PubMed, 41 citations in OpenAlex.

  1. Effects of 12 WeeksNutrients · 2021
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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 1 country.

Brian SpencerFrom the NeuroTransit, Inc., San Diego, California 92121, spencer@neurotransit.com.
Inder Vermathe Laboratory of Genetics, Salk Institute for Biological Studies, La Jolla, California 92037, and.
Paula Desplatsthe Departments of Neuroscience and.
Dinorah Morvinskithe Laboratory of Genetics, Salk Institute for Biological Studies, La Jolla, California 92037, and.
Ed Rockensteinthe Departments of Neuroscience and.
Anthony Adamethe Departments of Neuroscience and.
Eliezer Masliahthe Departments of Neuroscience and Pathology, University of California at San Diego, San Diego, California 92093.
University of California, San Diego · USSalk Institute for Biological Studies · US

Funding

VIRUS-INDUCED BRAIN PATHOLOGYP50AG005131 · NIA · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI GALASKO, DOUGLAS R · 1985 to 2018
$55.4M
Tissue Culture CoreP01AG022074 · NIA · J. DAVID GLADSTONE INSTITUTES · PI MASLIAH, ELIEZER · 2003 to 2012
$27.0M
Viral VectorsP01AG010435 · NIA · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI TUSZYNSKI, MARK H. · 1991 to 2014
$20.9M
Project-002P30NS076411 · NINDS · SCINTILLON INSTITUTE FOR PHOTOBIOLOGY · PI LIPTON, STUART A · 2011 to 2016
$4.5M
a-synuclein clearance strategies for the treatment of Lewy body disease.R37AG018440 · NIA · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI MASLIAH, ELIEZER · 2006 to 2014
$2.7M
NIA NIH HHS AG010435NIA NIH HHS AG022074NIA NIH HHS AG188440NIA NIH HHS AG5131NIA NIH HHS P01 AG010435NIA NIH HHS P01 AG022074NIA NIH HHS P50 AG005131NIA NIH HHS R37 AG018440NINDS NIH HHS P30 NS076411
6 · The paper itself

Abstract

Alzheimer disease (AD) is characterized by widespread neurodegeneration throughout the association cortex and limbic system, deposition of amyloid-β peptide (Aβ) in the neuropil and around the blood vessels, and formation of neurofibrillary tangles. The endopeptidase neprilysin has been successfully used to reduce the accumulation of Aβ following intracranial viral vector delivery or ex vivo manipulated intracranial delivery. These therapies have relied on direct injections into the brain, whereas a clinically desirable therapy would involve i.v. infusion of a recombinant enzyme. We previously characterized a recombinant neprilysin that contained a 38-amino acid brain-targeting domain. Recombinant cell lines have been generated expressing this brain-targeted enzyme (ASN12). In this report, we characterize the ASN12 recombinant protein for pharmacology in a mouse as well as efficacy in two APPtg mouse models of AD. The recombinant ASN12 transited to the brain with a t½ of 24 h and accumulated to 1.7% of injected dose at 24 h following i.v. delivery. We examined pharmacodynamics in the tg2576 APPtg mouse with the prion promoter APP695 SWE mutation and in the Line41 mThy1 APP751 mutation mouse. Treatment of either APPtg mouse resulted in reduced Aβ, increased neuronal synapses, and improved learning and memory. In addition, the Line41 APPtg mice showed increased levels of C-terminal neuropeptide Y fragments and increased neurogenesis. These results suggest that the recombinant brain-targeted neprilysin, ASN12, may be an effective treatment for AD and warrant further investigation in clinical trials.

Indexed as

Alzheimer DiseaseAmyloid beta-PeptidesAnimalsBrainHep G2 CellsHumansMiceMice, TransgenicMutationNeprilysinNeurogenesisNeuropeptide YNeuroprotective AgentsRatsRecombinant Fusion ProteinsAmyloid beta-PeptidesNeprilysinNeuropeptide YNeuroprotective AgentsRecombinant Fusion ProteinsAlzheimer DiseaseAβBlood Brain BarrierBrain Penetrating PeptidesLipoprotein ReceptorNeprilysinNeurogenesisNPYProtein TargetingTranscytosis

Identifiers

PMID24825898
PMCPMC4067222
OpenAlexW2060487992

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.