Cited by 46Cell Adhesion Molecules ResearchCellular Mechanics and InteractionsBlood properties and coagulation

Biomimetic channel modeling local vascular dynamics of pro-inflammatory endothelial changes

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Thomas, Antony, Daniel Ou-Yang, H., Lowe-Krentz, Linda, Muzykantov, Vladimir R., Liu, Yaling·2016·Biomicrofluidics

Abstract

Endothelial cells form the inner lining of blood vessels and are exposed to various factors like hemodynamic conditions (shear stress, laminar, and turbulent flow), biochemical signals (cytokines), and communication with other cell types (smooth muscle cells, monocytes, platelets, etc.). Blood vessel functions are regulated by interactions among these factors. The occurrence of a pathological condition would lead to localized upregulation of cell adhesion molecules on the endothelial lining of the blood vessel. This process is promoted by circulating cytokines such as tumor necrosis factor-alpha, which leads to expression of intercellular adhesion molecule-1 (ICAM-1) on the endothelial cell surface among other molecules. ICAM-1 is critical in regulating endothelial cell layer dynamic integrity and cytoskeletal remodeling and also mediates direct cell-cell interactions as part of inflammatory responses and wound healing. In this study, we developed a biomimetic blood vessel model by culturing confluent, flow aligned, endothelial cells in a microfluidic platform, and performed real time in situ characterization of flow mediated localized pro-inflammatory endothelial activation. The model mimics the physiological phenomenon of cytokine activation of endothelium from the tissue side and studies the heterogeneity in localized surface ICAM-1 expression and F-actin arrangement. Fluorescent antibody coated particles were used as imaging probes for identifying endothelial cell surface ICAM-1 expression. The binding properties of particles were evaluated under flow for two different particle sizes and antibody coating densities. This allowed the investigation of spatial resolution and accessibility of ICAM-1 molecules expressed on the endothelial cells, along with their sensitivity in receptor-ligand recognition and binding. This work has developed an in vitro blood vessel model that can integrate various heterogeneous factors to effectively mimic a complex endothelial microenvironment and can be potentially applied for relevant blood vessel mechanobiology studies.

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  1. [2]2. C. A. Staton et al., "Current methods for assaying angiogenesis in vitro and in vivo," Int. J. Exp. Pathol. 85(5), 233-248 (2004).
  2. [34]34. C. G. Galbraith, R. Skalak, and S. Chien, "Shear stress induces spatial reorganization of the endothelial cell cytoskeleton," Cell Motil. Cytoskeleton 40(4), 317-330 (1998).
  3. [46]46. Thomas et al. Biomicrofluidics 10, 014101 (2016)
  4. [60]60. B. W ojciak-Stothard et al., "Regulation of TNF-a-induced reorganization of the actin cytoskeleton and cell-cell junctions by Rho, Rac, and Cdc42 in human endothelial cells," J. Cell. Physiol. 176(1), 150-165 (1998).

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Authors
Thomas, A., Daniel Ou-Yang, H., Lowe-Krentz, L., Muzykantov, V. R., & Liu, Y.
Affiliations
  • Lehigh University (US)
  • Lehigh University 1 Bioengineering Program, , Bethlehem, Pennsylvania 18015, USA
  • University of Pennsylvania (US)
Venue
Biomicrofluidics
Published
2016-01-01
Volume
10
Issue
1
Pages
014101-014101
ISSN
1932-1058 (ISSN-L)
OpenAlex
W2224267091
Cited by
46
References
61
Citations by year
2026: 1 · 2025: 1 · 2024: 6 · 2023: 2 · 2022: 3 · 2021: 11 · 2020: 5 · 2019: 4 · 2018: 8 · 2017: 3 · 2016: 2
FWCI
5.35
Type
journal article
Language
en
Open access
Locations
  • Biomicrofluidics (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Science Foundation (CBET-1067502, CBET-1113040)
  • National Institutes of Health (EB015105)
Topics
  • Health Sciences › Medicine › Immunology and Allergy › Cell Adhesion Molecules Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular Mechanics and Interactions
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Blood properties and coagulation
Keywords
endothelial cells, ICAM-1, TNF-α, microfluidic flow chamber, adhesion molecules, F-actin cytoskeleton, ligand-receptor interactions, in situ imaging

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