title: Investigation of cell aggregation on the substrate of a parallel-plate flow chamber.
abstract: Adhesion of tumor cells (TCs) to polymorphonuclear neutrophils (PMNs) tethered on a monolayer of vascular endothelial cells (ECs) in shear flows is investigated theoretically. Both TC&mdash;PMN and PMN&mdash;EC aggregations are modeled using the population balance equations (PBEs). Parameters in the model obtained by curve fitting show that an increase of shear rate or viscosity will suppress the formation of aggregates and promote the breakage of them. Analysis on the collision frequency suggests that the averaged encounter duration is affected by viscosity. Based on the model, a nonlinear connection between the number of migrated TCs and the concentration of PMNs in the flow near the substrate is presented.
authors.affiliation: Shanghai Jiao Tong University Department of Engineering Mechanics Shanghai China.
authors.forename: F
authors.initials: F
authors.lastname: Bai
authors.affiliation: The Pennsylvania State University Department of Bioengineering USA.
authors.forename: C
authors.initials: C
authors.lastname: Dong
authors.affiliation: Shanghai Jiao Tong University School of Life Science & Biotechnology Shanghai China.
authors.forename: C
authors.initials: C
authors.lastname: Cao
authors.affiliation: Shanghai Jiao Tong University Department of Engineering Mechanics Shanghai China drrsun&commat;sjtu.edu.cn.
authors.forename: R
authors.initials: R
authors.lastname: Sun
mesh_terms: D000465:Algorithms; D002448:Cell Adhesion / Q000502:physiology*; D002449:Cell Aggregation / Q000502:physiology*; D045744:Cell Line, Tumor; D002465:Cell Movement; D042783:Endothelial Cells / Q000378:metabolism*; D004730:Endothelium, Vascular / Q000166:cytology; D006801:Humans; D008962:Models, Theoretical; D009504:Neutrophils / Q000502:physiology*