A Model of Ligand-Receptor Adhesion for Microparticles and Ellipsoidal Cells
- Authors: Kaznacheev M.A.1, Belyaev A.V.1
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Affiliations:
- Department of Physics
- Issue: Vol 74, No 4 (2019)
- Pages: 400-406
- Section: Biophysics and Medical Physics
- URL: https://journals.rcsi.science/0027-1349/article/view/165164
- DOI: https://doi.org/10.3103/S002713491904009X
- ID: 165164
Cite item
Abstract
Blood platelets play a key role in hemostasis and thrombosis. In the present work, a mathematical model of adhesive interaction between a non-activated platelet and an adhesive substrate is proposed. The cell is represented as a solid non-deformable ellipsoid on the surface of which adhesion receptor proteins are evenly distributed. A plane uniformly coated with an adhesive ligand, collagen or von Willebrand factor, is considered an adhesive substrate. The platelet is attached to the plane by the formation of elastic ligand-receptor bonds. The motion of the platelet with constant velocity directed perpendicular to the surface and under the action of a constant force also directed perpendicular to the surface is considered. The influence of the platelet shape on the adhesion force is demonstrated. In the case of motion under a constant force, the threshold forces were obtained that determine two possible states: the separation of a platelet or its retention at the surface.
About the authors
M. A. Kaznacheev
Department of Physics
Author for correspondence.
Email: kaznacheev.michael@mail.ru
Russian Federation, Moscow, 119991
A. V. Belyaev
Department of Physics
Author for correspondence.
Email: al_belyaev@inbox.ru
Russian Federation, Moscow, 119991