title: Development of multilayer constructs for tissue engineering.
abstract: The rapidly developing field of tissue engineering produces living substitutes that restore, maintain or improve the function of tissues or organs. In contrast to standard therapies, the engineered products become integrated within the patient, affording a potentially permanent and specific cure of the disease, injury or impairment. Despite the great progress in the field, development of clinically relevantly sized tissues with complex architecture remains a great challenge. This is mostly due to limitations of nutrient and oxygen delivery to the cells and limited availability of scaffolds that can mimic the complex tissue architecture. This study presents the development of a multilayer tissue construct by rolling pre-seeded electrospun sheets [(prepared from poly (l-lactic acid) (PLLA) seeded with C2C12 pre-myoblast cells)] around a porous multibore hollow fibre (HF) membrane and its testing using a bioreactor. Important elements of this study are: 1) the medium permeating through the porous walls of multibore HF acts as an additional source of nutrients and oxygen to the cells, which exerts low shear stress (controllable by trans membrane pressure); 2) application of dynamic perfusion through the HF lumen and around the 3D construct to achieve high cell proliferation and homogenous cell distribution across the layers, and 3) cell migration occurs within the multilayer construct (shown using pre-labeled C2C12 cells), illustrating the potential of using this concept for developing thick and more complex tissues.
authors.affiliation: Membrane Technology Group, Faculty of Science and Technology, PO Box 217, 7500 AE, Enschede, The Netherlands.
authors.forename: N M S
authors.initials: NM
authors.lastname: Bettahalli
authors.forename: N
authors.initials: N
authors.lastname: Groen
authors.forename: H
authors.initials: H
authors.lastname: Steg
authors.forename: H
authors.initials: H
authors.lastname: Unadkat
authors.forename: J
authors.initials: J
authors.lastname: de Boer
authors.forename: C A
authors.initials: CA
authors.lastname: van Blitterswijk
authors.forename: M
authors.initials: M
authors.lastname: Wessling
authors.forename: D
authors.initials: D
authors.lastname: Stamatialis
mesh_terms: D000818:Animals; D019149:Bioreactors; D018929:Cell Culture Techniques; D002465:Cell Movement / Q000187:drug effects; D049109:Cell Proliferation / Q000187:drug effects; D002470:Cell Survival / Q000187:drug effects; D002478:Cells, Cultured; D019344:Lactic Acid / Q000494:pharmacology; D008567:Membranes, Artificial; D051379:Mice; D011091:Polyesters; D011108:Polymers / Q000494:pharmacology; D013194:Staining and Labeling; D023822:Tissue Engineering / Q000379:methods*; D054457:Tissue Scaffolds / Q000737:chemistry*; D014867:Water
chemical_list: D008567:Membranes, Artificial; D011091:Polyesters; D011108:Polymers; D014867:Water; D019344:Lactic Acid; C033616:poly(lactide)