Evidence map›Paper›PMID 33533918›Full record

ArticleThe Journal of experimental medicine2021

Endothelial LRP1 protects against neurodegeneration by blocking cyclophilin A.

Angeliki Maria Nikolakopoulou, Yaoming Wang, Qingyi Ma, Abhay P Sagare, Axel Montagne, Mikko T Huuskonen, Sanket V Rege, Kassandra Kisler, Zhonghua Dai, Jakob Körbelin and 3 more

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of experimental medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 73 papers.

0numbers the graph read from it
0cells of the map it votes in
73citing papers in PubMed
7.1field-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

73 citing papers in PubMed, 122 citations in OpenAlex.

  1. Article
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  8. Sialylation patterns in cerebral amyloid angiopathy.Brain pathology (Zurich, Switzerland) · 2026
    Article
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  18. The blood-brain barrier: a help and a hindrance.Brain : a journal of neurology · 2025
    Review
  19. Review
  20. Article

13 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

13 authors at 3 institutions in 2 countries.

Angeliki Maria Nikolakopoulou *Department of Physiology and Neuroscience, Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, Los Angeles, Los Angeles, CA.
Yaoming Wang *Department of Physiology and Neuroscience, Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, Los Angeles, Los Angeles, CA.
Qingyi Ma *Department of Physiology and Neuroscience, Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, Los Angeles, Los Angeles, CA.
Abhay P SagareDepartment of Physiology and Neuroscience, Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, Los Angeles, Los Angeles, CA.
Axel MontagneDepartment of Physiology and Neuroscience, Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, Los Angeles, Los Angeles, CA.
Mikko T HuuskonenDepartment of Physiology and Neuroscience, Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, Los Angeles, Los Angeles, CA.
Sanket V RegeDepartment of Physiology and Neuroscience, Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, Los Angeles, Los Angeles, CA.
Kassandra KislerDepartment of Physiology and Neuroscience, Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, Los Angeles, Los Angeles, CA.
Zhonghua DaiDepartment of Physiology and Neuroscience, Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, Los Angeles, Los Angeles, CA.
Jakob KörbelinHubertus Wald Cancer Center, Department of Oncology and Hematology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Joachim HerzDepartments of Neuroscience, Molecular Genetics, and Neurology, University of Texas Southwestern Medical Center, Dallas, TX.
Zhen Zhao *Department of Physiology and Neuroscience, Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, Los Angeles, Los Angeles, CA.
Berislav V Zlokovic *Department of Physiology and Neuroscience, Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, Los Angeles, Los Angeles, CA.
University of Southern California · USUniversität Hamburg · DEUniversity of Freiburg · DE

Funding

Vascular Contributions to Dementia and Genetic Risk Factors for Alzheimer's DiseaseP01AG052350 · NIA · UNIVERSITY OF SOUTHERN CALIFORNIA · PI ARTHUR W TOGA · 2016 to 2026
$28.4M
Alzheimer's Abeta, Tau, Apolipoproteins and Blood-brain barrierR01NS034467 · NINDS · UNIVERSITY OF SOUTHERN CALIFORNIA · PI YASSINE, HUSSEIN N · 1995 to 2024
$9.1M
The role of pericytes in white matter diseaseR01NS100459 · NINDS · UNIVERSITY OF SOUTHERN CALIFORNIA · PI ZLOKOVIC, BERISLAV V · 2016 to 2020
$3.6M
Cerebrovascular beta-Amyloidosis: A-beta CNS Transport PathwaysR01AG023084 · NIA · UNIVERSITY OF SOUTHERN CALIFORNIA · PI ZLOKOVIC, BERISLAV V · 2015 to 2019
$3.0M
The role of pericytes in the adult and the aging brainR01AG039452 · NIA · UNIVERSITY OF SOUTHERN CALIFORNIA · PI ZLOKOVIC, BERISLAV V · 2011 to 2015
$1.6M
Deciphering isogenic APOE isoform dependent neurodegenerative response in human gliaK01AG062683 · NIA · ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI · PI TCW, JULIA · 2019 to 2023
$621k
The molecular mechanism of PICALM-dependent endosomal traffickingR21AG066090 · NIA · UNIVERSITY OF SOUTHERN CALIFORNIA · PI ZHAO, ZHEN · 2019 to 2020
$454k
NIA NIH HHS K01 AG062683NIA NIH HHS P01 AG052350NIA NIH HHS R01 AG023084NIA NIH HHS R01 AG039452NIA NIH HHS R21 AG066090NINDS NIH HHS R01 NS034467NINDS NIH HHS R01 NS100459
6 · The paper itself

Abstract

The low-density lipoprotein receptor-related protein 1 (LRP1) is an endocytic and cell signaling transmembrane protein. Endothelial LRP1 clears proteinaceous toxins at the blood-brain barrier (BBB), regulates angiogenesis, and is increasingly reduced in Alzheimer's disease associated with BBB breakdown and neurodegeneration. Whether loss of endothelial LRP1 plays a direct causative role in BBB breakdown and neurodegenerative changes remains elusive. Here, we show that LRP1 inactivation from the mouse endothelium results in progressive BBB breakdown, followed by neuron loss and cognitive deficits, which is reversible by endothelial-specific LRP1 gene therapy. LRP1 endothelial knockout led to a self-autonomous activation of the cyclophilin A-matrix metalloproteinase-9 pathway in the endothelium, causing loss of tight junctions underlying structural BBB impairment. Cyclophilin A inhibition in mice with endothelial-specific LRP1 knockout restored BBB integrity and reversed and prevented neuronal loss and behavioral deficits. Thus, endothelial LRP1 protects against neurodegeneration by inhibiting cyclophilin A, which has implications for the pathophysiology and treatment of neurodegeneration linked to vascular dysfunction.

Indexed as

Alzheimer DiseaseAnimalsBlood-Brain BarrierCells, CulturedCognitive DysfunctionCyclophilin ACyclosporineDisease Models, AnimalEndothelial CellsEnzyme InhibitorsFemaleGene Knockout TechniquesGenetic TherapyLow Density Lipoprotein Receptor-Related Protein-1MaleMatrix Metalloproteinase 9alisporivirCyclophilin ACyclosporineEnzyme InhibitorsLow Density Lipoprotein Receptor-Related Protein-1Lrp1 protein, mouseMatrix Metalloproteinase 9Mmp9 protein, mouse

Identifiers

PMID33533918
PMCPMC7863706
OpenAlexW3128600120

What OpenQuestion holds

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LicenceCC BY-NC-SA
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.