Evidence map›Paper›PMID 25961453›Full record

ArticleThe Journal of clinical investigation2015

Bacterial induction of Snail1 contributes to blood-brain barrier disruption.

Brandon J Kim, Bryan M Hancock, Andres Bermudez, Natasha Del Cid, Efren Reyes, Nina M van Sorge, Xavier Lauth, Cameron A Smurthwaite, Brett J Hilton, Aleksandr Stotland and 5 more

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of clinical investigation, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 88 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
88citing papers in PubMed, 1 pooled it
8.0field-weighted citation impact, top 2% 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

88 citing papers in PubMed, 1 synthesis or guideline pooled it, 144 citations in OpenAlex.

  1. Pooled it
  2. Emerging microbes & infections · 2026
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  11. Review
  12. Identification of glyoxalase A in group BInfection and immunity · 2025
    Article
  13. Article
  14. Time-course transcriptomics reveals the impact ofFrontiers in microbiology · 2025
    Article
  15. Review
  16. Identification of Glyoxalase A in Group BbioRxiv : the preprint server for biology · 2024
    Article
  17. Article
  18. Microbiology resource announcements · 2024
    Article
  19. Article
  20. Article

28 more citing papers are in PubMed but not listed here.

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 2 institutions in 2 countries.

Brandon J Kim
Bryan M Hancock
Andres Bermudez
Natasha Del Cid
Efren Reyes
Nina M van Sorge
Xavier Lauth
Cameron A Smurthwaite
Brett J Hilton
Aleksandr Stotland
Anirban Banerjee
John Buchanan
Roland Wolkowicz
David Traver
Kelly S Doran
University of California, San Diego · USUniversity Medical Center Utrecht · NL

Funding

THE INTERSECTION OF LANGUAGE AND AFFECTR25GM058906 · NIGMS · SAN DIEGO STATE UNIVERSITY · PI TONG, WILLIAM G. · 1999 to 2021
$10.7M
Blood-brain barrier in bacterial meningitisR01NS051247 · NINDS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI DORAN, KELLY S · 2006 to 2015
$3.2M
NIGMS NIH HHS R25 GM058906NIGMS NIH HHS R25-GM058906NINDS NIH HHS R01 NS051247NINDS NIH HHS R01-NS051247
6 · The paper itself

Abstract

Bacterial meningitis is a serious infection of the CNS that results when blood-borne bacteria are able to cross the blood-brain barrier (BBB). Group B Streptococcus (GBS) is the leading cause of neonatal meningitis; however, the molecular mechanisms that regulate bacterial BBB disruption and penetration are not well understood. Here, we found that infection of human brain microvascular endothelial cells (hBMECs) with GBS and other meningeal pathogens results in the induction of host transcriptional repressor Snail1, which impedes expression of tight junction genes. Moreover, GBS infection also induced Snail1 expression in murine and zebrafish models. Tight junction components ZO-1, claudin 5, and occludin were decreased at both the transcript and protein levels in hBMECs following GBS infection, and this repression was dependent on Snail1 induction. Bacteria-independent Snail1 expression was sufficient to facilitate tight junction disruption, promoting BBB permeability to allow bacterial passage. GBS induction of Snail1 expression was dependent on the ERK1/2/MAPK signaling cascade and bacterial cell wall components. Finally, overexpression of a dominant-negative Snail1 homolog in zebrafish elevated transcription of tight junction protein-encoding genes and increased zebrafish survival in response to GBS challenge. Taken together, our data support a Snail1-dependent mechanism of BBB disruption and penetration by meningeal pathogens.

Indexed as

MAP Kinase Signaling SystemStreptococcus agalactiaeAnimalsBlood-Brain BarrierCells, CulturedClaudin-5Gene Expression RegulationHumansMitogen-Activated Protein Kinase 1Mitogen-Activated Protein Kinase 3Snail Family Transcription FactorsStreptococcal InfectionsTight JunctionsTranscription FactorsZebrafishZebrafish ProteinsClaudin-5CLDN5 protein, humanMAPK1 protein, humanMitogen-Activated Protein Kinase 1Mitogen-Activated Protein Kinase 3snai1a protein, zebrafishSNAI1 protein, humanSnail Family Transcription FactorsTJP1 protein, humanTranscription FactorsZebrafish ProteinsZonula Occludens-1 Protein

Identifiers

PMID25961453
PMCPMC4497739
OpenAlexW1495151309

What OpenQuestion holds

Textmetadata
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.