An integrated assay to probe endothelial glycocalyx-blood cell interactions under flow in mechanically and biochemically well-defined environments

H.S. Davies, N.S. Baranova, N. El Amri, L. Coche-Guérente, C. Verdier, L. Bureau, R.P. Richter, D. Débarre, Matrix Biology 78–79 (2019) 47–59.

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Journal Article | Published | English
Author
Davies, Heather S.; Baranova, NataliaIST Austria ; El Amri, Nouha; Coche-Guérente, Liliane; Verdier, Claude; Bureau, Lionel; Richter, Ralf P.; Débarre, Delphine
Department
Abstract
Cell-cell and cell-glycocalyx interactions under flow are important for the behaviour of circulating cells in blood and lymphatic vessels. However, such interactions are not well understood due in part to a lack of tools to study them in defined environments. Here, we develop a versatile in vitro platform for the study of cell-glycocalyx interactions in well-defined physical and chemical settings under flow. Our approach is demonstrated with the interaction between hyaluronan (HA, a key component of the endothelial glycocalyx) and its cell receptor CD44. We generate HA brushes in situ within a microfluidic device, and demonstrate the tuning of their physical (thickness and softness) and chemical (density of CD44 binding sites) properties using characterisation with reflection interference contrast microscopy (RICM) and application of polymer theory. We highlight the interactions of HA brushes with CD44-displaying beads and cells under flow. Observations of CD44+ beads on a HA brush with RICM enabled the 3-dimensional trajectories to be generated, and revealed interactions in the form of stop and go phases with reduced rolling velocity and reduced distance between the bead and the HA brush, compared to uncoated beads. Combined RICM and bright-field microscopy of CD44+ AKR1 T-lymphocytes revealed complementary information about the dynamics of cell rolling and cell morphology, and highlighted the formation of tethers and slings, as they interacted with a HA brush under flow. This platform can readily incorporate more complex models of the glycocalyx, and should permit the study of how mechanical and biochemical factors are orchestrated to enable highly selective blood cell-vessel wall interactions under flow.
Publishing Year
Date Published
2019-05-01
Journal Title
Matrix Biology
Volume
78-79
Page
47-59
ISSN
IST-REx-ID

Cite this

Davies HS, Baranova NS, El Amri N, et al. An integrated assay to probe endothelial glycocalyx-blood cell interactions under flow in mechanically and biochemically well-defined environments. Matrix Biology. 2019;78-79:47-59. doi:10.1016/j.matbio.2018.12.002
Davies, H. S., Baranova, N. S., El Amri, N., Coche-Guérente, L., Verdier, C., Bureau, L., … Débarre, D. (2019). An integrated assay to probe endothelial glycocalyx-blood cell interactions under flow in mechanically and biochemically well-defined environments. Matrix Biology, 7879, 47–59. https://doi.org/10.1016/j.matbio.2018.12.002
Davies, Heather S., Natalia S. Baranova, Nouha El Amri, Liliane Coche-Guérente, Claude Verdier, Lionel Bureau, Ralf P. Richter, and Delphine Débarre. “An Integrated Assay to Probe Endothelial Glycocalyx-Blood Cell Interactions under Flow in Mechanically and Biochemically Well-Defined Environments.” Matrix Biology 78–79 (2019): 47–59. https://doi.org/10.1016/j.matbio.2018.12.002.
H. S. Davies et al., “An integrated assay to probe endothelial glycocalyx-blood cell interactions under flow in mechanically and biochemically well-defined environments,” Matrix Biology, vol. 78–79, pp. 47–59, 2019.
Davies HS, Baranova NS, El Amri N, Coche-Guérente L, Verdier C, Bureau L, Richter RP, Débarre D. 2019. An integrated assay to probe endothelial glycocalyx-blood cell interactions under flow in mechanically and biochemically well-defined environments. Matrix Biology. 78–79, 47–59.
Davies, Heather S., et al. “An Integrated Assay to Probe Endothelial Glycocalyx-Blood Cell Interactions under Flow in Mechanically and Biochemically Well-Defined Environments.” Matrix Biology, vol. 78–79, Elsevier, 2019, pp. 47–59, doi:10.1016/j.matbio.2018.12.002.
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