Evidence map›Paper›PMID 38184788›Full record

ArticleAlzheimer's & dementia : the journal of the Alzheimer's Association2024

Alzheimer's disease-associated P460L variant of EphA1 dysregulates receptor activity and blood-brain barrier function.

Helen A Owens, Lauren E Thorburn, Elisabeth Walsby, Owen R Moon, Pierre Rizkallah, Subuhi Sherwani, Caroline L Tinsley, Louise Rogers, Camilla Cerutti, Anne J Ridley and 3 more

Open access · hybridAbstract read
In one paragraph

Article in Alzheimer's & dementia : the journal of the Alzheimer's Association, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
3.5field-weighted citation impact, top 7% 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

13 citing papers in PubMed, 14 citations in OpenAlex.

  1. Review
  2. Article
  3. Proteomic Signatures of ProtectedmedRxiv : the preprint server for health sciences · 2026
    Article
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  8. PreoperativeFrontiers in bioinformatics · 2026
    Review
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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

13 authors at 4 institutions in 2 countries.

Helen A OwensDivision of Infection and Immunity, School of Medicine, Cardiff University, Cardiff, UK.
Lauren E ThorburnDivision of Infection and Immunity, School of Medicine, Cardiff University, Cardiff, UK.
Elisabeth WalsbyDivision of Cancer & Genetics, School of Medicine, Cardiff University, Cardiff, UK.
Owen R MoonDivision of Infection and Immunity, School of Medicine, Cardiff University, Cardiff, UK.
Pierre RizkallahDivision of Infection and Immunity, School of Medicine, Cardiff University, Cardiff, UK.
Subuhi SherwaniDivision of Infection and Immunity, School of Medicine, Cardiff University, Cardiff, UK.
Caroline L TinsleyDivision of Infection and Immunity, School of Medicine, Cardiff University, Cardiff, UK.
Louise RogersDivision of Infection and Immunity, School of Medicine, Cardiff University, Cardiff, UK.
Camilla CeruttiSchool of Cellular and Molecular Medicine, University of Bristol, Bristol, UK.
Anne J RidleySchool of Cellular and Molecular Medicine, University of Bristol, Bristol, UK.
Julie WilliamsSchool of Dentistry, Cardiff University, Cardiff, UK.
Vera KnäuperSchool of Dentistry, Cardiff University, Cardiff, UK.
Ann AgerDivision of Infection and Immunity, School of Medicine, Cardiff University, Cardiff, UK.ORCID 0000-0002-5763-8908
Cardiff University · GBUniversity of Bristol · GBUK Dementia Research Institute · GBUniversity of Wales Institute Cardiff · SG

Funding

Medical Research Council MR/L010305/1
6 · The paper itself

Abstract

introductionGenome-wide association studies link susceptibility to late-onset Alzheimer's disease (LOAD) with EphA1. Sequencing identified a non-synonymous substitution P460L as a LOAD risk variant. Other Ephs regulate vascular permeability and immune cell recruitment. We hypothesized that P460L dysregulates EphA1 receptor activity and impacts neuroinflammation.

methodsEphA1/P460L receptor activity was assayed in isogenic Human Embryonic Kidney (HEK) cells. Soluble EphA1/P460L (sEphA1/sP460L) reverse signaling in brain endothelial cells was assessed by T-cell recruitment and barrier function assays.

resultsEphA1 and P460L were expressed in HEK cells, but membrane and soluble P460L were significantly reduced. Ligand engagement induced Y781 phosphorylation of EphA1 but not P460L. sEphA1 primed brain endothelial cells for increased T-cell recruitment; however, sP460L was less effective. sEphA1 decreased the integrity of the brain endothelial barrier, while sP460L had no effect. DISCUSSION: These findings suggest that P460L alters EphA1-dependent forward and reverse signaling, which may impact blood-brain barrier function in LOAD. HIGHLIGHTS: EphA1-dependent reverse signaling controls recruitment of T cells by brain endothelial cells. EphA1-dependent reverse signaling remodels brain endothelial cell contacts. LOAD-associated P460L variant of EphA1 shows reduced membrane expression and reduced ligand responses. LOAD-associated P460L variant of EphA1 fails to reverse signal to brain endothelial cells.

Indexed as

Alzheimer DiseaseBlood-Brain BarrierEndothelial CellsGenome-Wide Association StudyHumansLigandsReceptor, EphA1LigandsReceptor, EphA1Alzheimer's diseaseblood-brain barrierEphA1late-onset Alzheimer's diseaseT-cell recruitment

Identifiers

PMID38184788
PMCPMC10984439
OpenAlexW4390651152

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.