Evidence map›Paper›PMID 41663365›Full record

ArticleCell death & disease2026

Endothelial IRE1 signaling maintains blood-brain barrier integrity and limits neuroinflammation after traumatic brain injury.

Qiyan Fan, Mika Takarada-Iemata, Takashi Tanaka, Loc Dinh Nguyen, Nahoko Okitani, RongRong Yang, Takashi Tamatani, Hiroshi Ishii, Tsuyoshi Hattori, Hiroyasu Kidoya and 3 more

Abstract read
In one paragraph

Article in Cell death & disease, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
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

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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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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.

Qiyan FanDepartment of Neuroanatomy, Graduate School of Medical Sciences, Kanazawa University, Ishikawa, Japan.
Mika Takarada-IemataDepartment of Neuroanatomy, Graduate School of Medical Sciences, Kanazawa University, Ishikawa, Japan. m-tak@staff.kanazawa-u.ac.jp.ORCID http://orcid.org/0000-0002-2113-0707
Takashi TanakaDepartment of Rehabilitation Science, Graduate School of Health Sciences, Kobe University, Hyogo, Japan.
Loc Dinh NguyenDepartment of Neuroanatomy, Graduate School of Medical Sciences, Kanazawa University, Ishikawa, Japan.
Nahoko OkitaniDepartment of Neuroanatomy, Graduate School of Medical Sciences, Kanazawa University, Ishikawa, Japan.
RongRong YangDepartment of Neuroanatomy, Graduate School of Medical Sciences, Kanazawa University, Ishikawa, Japan.
Takashi TamataniDepartment of Neuroanatomy, Graduate School of Medical Sciences, Kanazawa University, Ishikawa, Japan.
Hiroshi IshiiDepartment of Neuroanatomy, Graduate School of Medical Sciences, Kanazawa University, Ishikawa, Japan.
Tsuyoshi HattoriDepartment of Neuroanatomy, Graduate School of Medical Sciences, Kanazawa University, Ishikawa, Japan.
Hiroyasu KidoyaDepartment of Integrative Vascular Biology, Faculty of Medical Science, Fukui University, Fukui, Japan.ORCID http://orcid.org/0000-0003-0413-7816
Yoshiaki KubotaDepartment of Anatomy, Keio University School of Medicine, Tokyo, Japan.ORCID http://orcid.org/0000-0001-6672-4122
Takao IwawakiDivision of Cell Medicine, Department of Life Science, Medical Research Institute, Kanazawa Medical University, Ishikawa, Japan.
Osamu HoriDepartment of Neuroanatomy, Graduate School of Medical Sciences, Kanazawa University, Ishikawa, Japan.

Funding

MEXT | Japan Society for the Promotion of Science (JSPS) JP 23K05984MEXT | Japan Society for the Promotion of Science (JSPS) JP23K08562MEXT | Japan Society for the Promotion of Science (JSPS) JP 24K22247MEXT | Japan Society for the Promotion of Science (JSPS) JP 25K09832Ministry of Education, Culture, Sports, Science and Technology (MEXT) Hakase+ for WISE program of Kanazawa University
6 · The paper itself

Abstract

Endoplasmic reticulum (ER) stress and activation of the unfolded protein response (UPR) contribute to the pathogenesis of traumatic brain injury (TBI), yet the cell type-specific roles of UPR pathways remain poorly understood. We previously identified endothelial cells (ECs) as a primary site of IRE1 pathway activation following brain injury. In this study, we investigated the role of endothelial IRE1 signaling in TBI using EC-specific IRE1 conditional knockout mice subjected to cortical ablation. Loss of IRE1 in ECs exacerbated blood-brain barrier (BBB) disruption, enhanced immune cell infiltration, amplified neuroinflammation, and expanded neuronal damage, ultimately leading to worsened neurological outcomes. RNA-sequencing revealed enrichment of interferon-related programs and identified Cxcl10 as an endothelial chemokine linked to the exacerbated leukocyte recruitment in endothelial IRE1 deficiency. Treatment with the chemical chaperone tauroursodeoxycholic acid (TUDCA) suppressed Cxcl10 expression both in vitro and in vivo, and significantly improved motor function following TBI. These findings reveal a critical role for endothelial IRE1 signaling in maintaining BBB integrity and restraining inflammation during the acute phase of TBI. Modulation of ER stress in brain ECs may represent a promising and accessible therapeutic strategy for reducing secondary injury after TBI.

Indexed as

Blood-Brain BarrierBrain Injuries, TraumaticEndoribonucleasesEndothelial CellsNeuroinflammatory DiseasesProtein Serine-Threonine KinasesAnimalsChemokine CXCL10Endoplasmic Reticulum StressMaleMiceMice, Inbred C57BLMice, KnockoutSignal TransductionTaurochenodeoxycholic AcidUnfolded Protein ResponseChemokine CXCL10Cxcl10 protein, mouseEndoribonucleasesErn1 protein, mouseProtein Serine-Threonine KinasesTaurochenodeoxycholic Acidursodoxicoltaurine

Identifiers

PMID41663365
PMCPMC12921219

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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.