Evidence map›Paper›PMID 34014921›Full record

ArticlePLoS biology2021

Extracellular DJ-1 induces sterile inflammation in the ischemic brain.

Koutarou Nakamura, Seiichiro Sakai, Jun Tsuyama, Akari Nakamura, Kento Otani, Kumiko Kurabayashi, Yoshiko Yogiashi, Hisao Masai, Takashi Shichita

Open access · goldAbstract read
In one paragraph

Article in PLoS biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
1.9field-weighted citation impact, top 14% 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

15 citing papers in PubMed, 27 citations in OpenAlex.

  1. Article
  2. Neuroprotective Potential ofBiomolecules · 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

9 authors at 2 institutions in 1 country.

Koutarou NakamuraStroke Renaissance Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan.
Seiichiro SakaiStroke Renaissance Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan.ORCID 0000-0002-7591-1621
Jun TsuyamaStroke Renaissance Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan.
Akari NakamuraStroke Renaissance Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan.
Kento OtaniStroke Renaissance Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan.
Kumiko KurabayashiStroke Renaissance Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan.
Yoshiko YogiashiStroke Renaissance Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan.
Hisao MasaiDepartment of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba, Japan.ORCID 0000-0003-1268-5302
Takashi ShichitaStroke Renaissance Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan.ORCID 0000-0003-1110-1926
Japan Agency for Medical Research and Development · JPTokyo Metropolitan Institute of Medical Science · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Inflammation is implicated in the onset and progression of various diseases, including cerebral pathologies. Here, we report that DJ-1, which plays a role within cells as an antioxidant protein, functions as a damage-associated molecular pattern (DAMP) and triggers inflammation if released from dead cells into the extracellular space. We first found that recombinant DJ-1 protein induces the production of various inflammatory cytokines in bone marrow-derived macrophages (BMMs) and dendritic cells (BMDCs). We further identified a unique peptide sequence in the αG and αH helices of DJ-1 that activates Toll-like receptor 2 (TLR2) and TLR4. In the ischemic brain, DJ-1 is released into the extracellular space from necrotic neurons within 24 h after stroke onset and makes direct contact with TLR2 and TLR4 in infiltrating myeloid cells. Although DJ-1 deficiency in a murine model of middle cerebral artery occlusion did not attenuate neuronal injury, the inflammatory cytokine expression in infiltrating immune cells was significantly decreased. Next, we found that the administration of an antibody to neutralize extracellular DJ-1 suppressed cerebral post-ischemic inflammation and attenuated ischemic neuronal damage. Our results demonstrate a previously unknown function of DJ-1 as a DAMP and suggest that extracellular DJ-1 could be a therapeutic target to prevent inflammation in tissue injuries and neurodegenerative diseases.

Indexed as

AlarminsAnimalsBrainBrain IschemiaCytokinesDisease Models, AnimalInfarction, Middle Cerebral ArteryInflammationMacrophagesMaleMiceMice, Inbred C57BLMice, KnockoutNeuronsProtein Deglycase DJ-1StrokeAlarminsCytokinesPARK7 protein, mouseProtein Deglycase DJ-1Tlr2 protein, mouseTlr4 protein, mouseToll-Like Receptor 2Toll-Like Receptor 4

Identifiers

PMID34014921
PMCPMC8136727
OpenAlexW3162016467

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.