Evidence map›Paper›PMID 33912914›Full record

ArticleJournal of cell science2021

Brain endothelial tricellular junctions as novel sites for T cell diapedesis across the blood-brain barrier.

Mariana Castro Dias, Adolfo Odriozola Quesada, Sasha Soldati, Fabio Bösch, Isabelle Gruber, Tobias Hildbrand, Derya Sönmez, Tejas Khire, Guillaume Witz, James L McGrath and 5 more

Open access · hybridAbstract read
In one paragraph

Article in Journal of cell science, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed
5.5field-weighted citation impact, top 3% 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

42 citing papers in PubMed, 76 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. The emerging role of T cells in depression.Frontiers in psychiatry · 2026
    Review
  5. Review
  6. Review
  7. Review
  8. The blood-brain barrier: a help and a hindrance.Brain : a journal of neurology · 2025
    Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Review
  15. Review
  16. Review
  17. Integrated Single-Cell RNA-seq and ATAC-seq Reveals Heterogeneous Differentiation of CD4Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024
    Article
  18. Article
  19. Article
  20. Modeling Brain Vasculature Immune Interactions In Vitro.Cold Spring Harbor perspectives in medicine · 2023
    Review
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

15 authors at 4 institutions in 4 countries.

Mariana Castro DiasTheodor Kocher Institute, University of Bern, Bern, Switzerland.
Adolfo Odriozola QuesadaInstitute of Anatomy, University of Bern, Bern CH-3012, Switzerland.
Sasha SoldatiTheodor Kocher Institute, University of Bern, Bern, Switzerland.
Fabio BöschTheodor Kocher Institute, University of Bern, Bern, Switzerland.
Isabelle GruberTheodor Kocher Institute, University of Bern, Bern, Switzerland.
Tobias HildbrandTheodor Kocher Institute, University of Bern, Bern, Switzerland.
Derya SönmezTheodor Kocher Institute, University of Bern, Bern, Switzerland.
Tejas KhireDepartment of Biomedical Engineering, University of Rochester, Rochester, NY 270168, USA.
Guillaume WitzMicroscopy Imaging Center (MIC), University of Bern, Bern CH-3012, Switzerland.
James L McGrathDepartment of Biomedical Engineering, University of Rochester, Rochester, NY 270168, USA.
Jörg PiontekInstitute of Clinical Physiology, Charité - Universitätsmedizin Berlin, Berlin 10117, Germany.
Masuo KondohGraduate School of Pharmaceutical Sciences, Osaka University, Osaka 565-0871, Japan.
Urban DeutschTheodor Kocher Institute, University of Bern, Bern, Switzerland.
Benoît ZuberInstitute of Anatomy, University of Bern, Bern CH-3012, Switzerland.
Britta EngelhardtTheodor Kocher Institute, University of Bern, Bern, Switzerland.
University of Bern · CHUniversity of Rochester · USCharité - Universitätsmedizin Berlin · DEThe University of Osaka · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The migration of activated T cells across the blood-brain barrier (BBB) is a critical step in central nervous system (CNS) immune surveillance and inflammation. Whereas T cell diapedesis across the intact BBB seems to occur preferentially through the BBB cellular junctions, impaired BBB integrity during neuroinflammation is accompanied by increased transcellular T cell diapedesis. The underlying mechanisms directing T cells to paracellular versus transcellular sites of diapedesis across the BBB remain to be explored. By combining in vitro live-cell imaging of T cell migration across primary mouse brain microvascular endothelial cells (pMBMECs) under physiological flow with serial block-face scanning electron microscopy (SBF-SEM), we have identified BBB tricellular junctions as novel sites for T cell diapedesis across the BBB. Downregulated expression of tricellular junctional proteins or protein-based targeting of their interactions in pMBMEC monolayers correlated with enhanced transcellular T cell diapedesis, and abluminal presence of chemokines increased T cell diapedesis through tricellular junctions. Our observations assign an entirely novel role to BBB tricellular junctions in regulating T cell entry into the CNS. This article has an associated First Person interview with the first author of the paper.

Indexed as

Blood-Brain BarrierTransendothelial and Transepithelial MigrationAnimalsBiological TransportEndothelial CellsMiceTight JunctionsT-LymphocytesBlood–brain barrierDiapedesisSBF-SEMT cellsTricellular junctions

Identifiers

PMID33912914
PMCPMC8121105
OpenAlexW3143640432

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.