Cited by 105Barrier Structure and Function StudiesDrug Transport and Resistance MechanismsWnt/β-catenin signaling in development and cancer

Modulation of Wnt/β-catenin signaling promotes blood-brain barrier phenotype in cultured brain endothelial cells

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Laksitorini, Marlyn D., Yathindranath, Vinith, Xiong, Wei, Hombach-Klonisch, Sabine, Miller, Donald W.·2019·Scientific Reports

Abstract

Wnt/β-catenin signaling is important for blood-brain barrier (BBB) development and is implicated in BBB breakdown under various pathophysiological conditions. In the present study, a comprehensive characterization of the relevant genes, transport and permeability processes influenced by both the autocrine and external activation of Wnt signaling in human brain endothelial cells was examined using hCMEC/D3 culture model. The hCMEC/D3 expressed a full complement of Wnt ligands and receptors. Preventing Wnt ligand release from hCMEC/D3 produced minimal changes in brain endothelial function, while inhibition of intrinsic/autocrine Wnt/β-catenin activity through blocking β-catenin binding to Wnt transcription factor caused more modest changes. In contrast, activation of Wnt signaling using exogenous Wnt ligand (Wnt3a) or LiCl (GSK3 inhibitor) improved the BBB phenotypes of the hCMEC/D3 culture model, resulting in reduced paracellular permeability, and increased P-glycoprotein (P-gp) and breast cancer resistance associated protein (BCRP) efflux transporter activity. Further, Wnt3a reduced plasmalemma vesicle associated protein (PLVAP) and vesicular transport activity in hCMEC/D3. Our data suggest that this in vitro model of the BBB has a more robust response to exogenous activation of Wnt/β-catenin signaling compared to autocrine activation, suggesting that BBB regulation may be more dependent on external activation of Wnt signaling within the brain microvasculature.

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Authors
Laksitorini, M. D., Yathindranath, V., Xiong, W., Hombach-Klonisch, S., & Miller, D. W.
Affiliations
  • Universitas Gadjah Mada (ID)
  • University of Manitoba (CA)
  • Health Sciences Centre (CA)
Corresponding author
Miller, Donald W.
Venue
Scientific Reports
Published
2019-12-23
Volume
9
Issue
1
Pages
19718-19718
ISSN
2045-2322 (ISSN-L)
OpenAlex
W2997752650
Cited by
105
References
63
Citations by year
2026: 13 · 2025: 9 · 2024: 21 · 2023: 12 · 2022: 21 · 2021: 19 · 2020: 10
FWCI
5.50
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
  • Manitoba Health Research Council
  • University of Manitoba
  • Canadian Breast Cancer Foundation
  • Cancer Research Society
Topics
  • Life Sciences › Neuroscience › Neurology › Barrier Structure and Function Studies
  • Health Sciences › Medicine › Oncology › Drug Transport and Resistance Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Wnt/β-catenin signaling in development and cancer
Keywords
Wnt/β-catenin signaling, blood-brain barrier, brain endothelial cells, hCMEC/D3, Wnt3a, paracellular permeability, P-glycoprotein, ABCG2, efflux pumps, PLVAP, vesicle trafficking, GSK3 inhibition, blood-brain barrier disruption
MeSH terms
Blood-Brain Barrier, Cells, Cultured, Endocytosis, Gene Expression Regulation, Humans, Ligands, Membrane Proteins, Oxazoles, Phenotype, Receptors, Cell Surface, Lithium Chloride, Autocrine Communication, Endothelial Cells, Wnt Signaling Pathway

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