Evidence map›Paper›PMID 35130912›Full record

ArticleJournal of neuroinflammation2022

Gas6 induces inflammation and reduces plaque burden but worsens behavior in a sex-dependent manner in the APP/PS1 model of Alzheimer's disease.

Laura D Owlett, Berke Karaahmet, Linh Le, Elizabeth K Belcher, Dawling Dionisio-Santos, John A Olschowka, Michael R Elliott, M Kerry O'Banion

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in Journal of neuroinflammation, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
4.4field-weighted citation impact, top 4% 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

21 citing papers in PubMed, 52 citations in OpenAlex.

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  18. iTRAQ-Based Proteomic Analysis of APP Transgenic Mouse Urine Exosomes.International journal of molecular sciences · 2022
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 2 institutions in 1 country.

Laura D OwlettDel Monte Institute for Neuroscience, Department of Neuroscience, University of Rochester, Rochester, NY, USA.
Berke KaraahmetDel Monte Institute for Neuroscience, Department of Neuroscience, University of Rochester, Rochester, NY, USA.
Linh LeDel Monte Institute for Neuroscience, Department of Neuroscience, University of Rochester, Rochester, NY, USA.
Elizabeth K BelcherDel Monte Institute for Neuroscience, Department of Neuroscience, University of Rochester, Rochester, NY, USA.
Dawling Dionisio-SantosDel Monte Institute for Neuroscience, Department of Neuroscience, University of Rochester, Rochester, NY, USA.
John A OlschowkaDel Monte Institute for Neuroscience, Department of Neuroscience, University of Rochester, Rochester, NY, USA.
Michael R ElliottDepartment of Microbiology, Immunology, and Cancer Biology, University of Virginia, Charlottesville, VA, USA.
M Kerry O'BanionDel Monte Institute for Neuroscience, Department of Neuroscience, University of Rochester, Rochester, NY, USA. Kerry_obanion@urmc.rochester.edu.ORCID http://orcid.org/0000-0003-1246-3363
University of Rochester · USUniversity of Virginia · US

Funding

University of Rochester Mentoring Environment: Nurturing Training Opportunities in Research (UR-MENTOR)T32GM007356 · NIGMS · UNIVERSITY OF ROCHESTER · PI O'BANION, M. KERRY · 1985 to 2023
$15.1M
Mechanism of IL-1 Dependent A-beta Plaque Clearance in Alzheimer's DiseaseR01AG030149 · NIA · UNIVERSITY OF ROCHESTER · PI O'BANION, M. KERRY · 2007 to 2018
$3.1M
Gas6:Axl regulation of microglia immune function and Alzheimer's pathogenesisR56AG066397 · NIA · UNIVERSITY OF ROCHESTER · PI ELLIOTT, MICHAEL RUSTY, O'BANION, M. KERRY · 2020 to 2020
$513k
Modulating microglial phagocytosis and inflammation in Alzheimer's disease: investigating a role for AxlF30AG061939 · NIA · UNIVERSITY OF ROCHESTER · PI OWLETT, LAURA · 2019 to 2021
$147k
NIA NIH HHS F30 AG061939NIA NIH HHS F30AG061939NIA NIH HHS R01 AG030149NIA NIH HHS R56 AG066397NIGMS NIH HHS T32 GM007356NIH HHS R01 AG030149NIH HHS R56 AG066397School of Medicine and Dentistry, University of Rochester University Research Award
6 · The paper itself

Abstract

backgroundAlzheimer's disease is the leading cause of dementia worldwide. TAM receptor tyrosine kinases (Tyro3, Axl, MerTK) are known for their role in engagement of phagocytosis and modulation of inflammation, and recent evidence suggests a complex relationship between Axl, Mer, and microglial phagocytosis of amyloid plaques in AD. Gas6, the primary CNS TAM ligand, reduces neuroinflammation and improves outcomes in murine models of CNS disease. Therefore, we hypothesized that AAV-mediated overexpression of Gas6 would alleviate plaque pathology, reduce neuroinflammation, and improve behavior in the APP/PS1 model of Alzheimer's disease.

methodsAdeno-associated viral vectors were used to overexpress Gas6 in the APP/PS1 model of Alzheimer's disease. Nine-month-old male and female APP/PS1 and nontransgenic littermates received bilateral stereotactic hippocampal injections of AAV-Gas6 or AAV-control, which expresses a non-functional Gas6 protein. One month after injections, mice underwent a battery of behavioral tasks to assess cognitive function and brains were processed for immunohistochemical and transcriptional analyses.

resultsGas6 overexpression reduced plaque burden in male APP/PS1 mice. However, contrary to our hypothesis, Gas6 increased pro-inflammatory microglial gene expression and worsened contextual fear conditioning compared to control-treated mice. Gas6 overexpression appeared to have no effect on phagocytic mechanisms in vitro or in vivo as measured by CD68 immunohistochemistry, microglial methoxy-04 uptake, and primary microglial uptake of fluorescent fibrillar amyloid beta.

conclusionOur data describes a triad of worsened behavior, reduced plaque number, and an increase in proinflammatory signaling in a sex-specific manner. While Gas6 has historically induced anti-inflammatory signatures in the peripheral nervous system, our data suggest an alternative, proinflammatory role in the context of Alzheimer's disease pathology.

Indexed as

Alzheimer DiseaseIntercellular Signaling Peptides and ProteinsPlaque, AmyloidAmyloid beta-PeptidesAmyloid beta-Protein PrecursorAnimalsDisease Models, AnimalFemaleGrowth Arrest-Specific Protein 6InflammationMaleMiceMice, Inbred C57BLMice, TransgenicPresenilin-1Amyloid beta-PeptidesAmyloid beta-Protein PrecursorGrowth Arrest-Specific Protein 6Intercellular Signaling Peptides and ProteinsPresenilin-1Alzheimer’s diseaseMicrogliaNeuroinflammationTAM receptors

Identifiers

PMID35130912
PMCPMC8822838
OpenAlexW4210257708

What OpenQuestion holds

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LicenceCC BY
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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.