Title :

Numerical optimization of cell colonization modelling inside scaffold for perfusion bioreactor: a multiscale model

Author(s) :

Nguyen, T.-K. [Auteur]
Carpentier, O. [Auteur]
Monchau, F. [Auteur]
Chai, Feng [Auteur]
Hornez, Jean-Christophe [Auteur]
Hivart, P. [Auteur]

Journal title :

Medical engineering & physics

Abbreviated title :

Med Eng Phys

Publication date :

2018-05-10

ISSN :

1873-4030

Keyword(s) :

CFD multiscale model
Perfusion bioreactor
3D cell colonization modelling
Wall shear stress

HAL domain(s) :

Sciences du Vivant [q-bio]

English abstract : [en]

Part of clinically applicable bone graft substitutes are developed by using mechanical stimulation of flow-perfusion into cell-seeded scaffolds. The role of fluid flow is crucial in driving the nutrient to seeded cells and ...
Show more >Part of clinically applicable bone graft substitutes are developed by using mechanical stimulation of flow-perfusion into cell-seeded scaffolds. The role of fluid flow is crucial in driving the nutrient to seeded cells and in stimulating cell colonization. A common numerical approach is to use a multiscale model to link some physical quantities (wall shear stress and inlet flow rate) that act at different scales. In this study, a multiscale model is developed in order to determine the optimal inlet flow rate to cultivate osteoblast-like cells seeded in a controlled macroporous biomaterial inside a perfusion bioreactor system. We focus particularly on the influence of Wall Shear Stress on cell colonization to predict cell colonization at the macroscale. Results obtained at the microscale are interpolated at the macroscale to determine the optimal flow rate. For a macroporous scaffold made of interconnected pores with pore diameters of above 350 μm and interconnection diameters of 150 μm, the model predicts a cell colonization of 325% after a 7-day-cell culture with a constant inlet flow rate of 0.69 mL·min-1Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Collections :

• Advanced Drug Delivery Systems (ADDS) - U1008

Submission date :

2021-01-20T15:59:07Z