title: An algorithm-based topographical biomaterials library to instruct cell fate.
abstract: It is increasingly recognized that material surface topography is able to evoke specific cellular responses, endowing materials with instructive properties that were formerly reserved for growth factors. This opens the window to improve upon, in a cost-effective manner, biological performance of any surface used in the human body. Unfortunately, the interplay between surface topographies and cell behavior is complex and still incompletely understood. Rational approaches to search for bioactive surfaces will therefore omit previously unperceived interactions. Hence, in the present study, we use mathematical algorithms to design nonbiased, random surface features and produce chips of poly(lactic acid) with 2,176 different topographies. With human mesenchymal stromal cells (hMSCs) grown on the chips and using high-content imaging, we reveal unique, formerly unknown, surface topographies that are able to induce MSC proliferation or osteogenic differentiation. Moreover, we correlate parameters of the mathematical algorithms to cellular responses, which yield novel design criteria for these particular parameters. In conclusion, we demonstrate that randomized libraries of surface topographies can be broadly applied to unravel the interplay between cells and surface topography and to find improved material surfaces.
authors.affiliation: Department of Tissue Regeneration, MIRA Institute for Biomedical Technology and Technical Medicine, University of Twente, 7500AE, Enschede, The Netherlands.
authors.forename: Hemant V
authors.initials: HV
authors.lastname: Unadkat
authors.forename: Marc
authors.initials: M
authors.lastname: Hulsman
authors.forename: Kamiel
authors.initials: K
authors.lastname: Cornelissen
authors.forename: Bernke J
authors.initials: BJ
authors.lastname: Papenburg
authors.forename: Roman K
authors.initials: RK
authors.lastname: Truckenmüller
authors.forename: Anne E
authors.initials: AE
authors.lastname: Carpenter
authors.forename: Matthias
authors.initials: M
authors.lastname: Wessling
authors.forename: Gerhard F
authors.initials: GF
authors.lastname: Post
authors.forename: Marc
authors.initials: M
authors.lastname: Uetz
authors.forename: Marcel J T
authors.initials: MJ
authors.lastname: Reinders
authors.forename: Dimitrios
authors.initials: D
authors.lastname: Stamatialis
authors.forename: Clemens A
authors.initials: CA
authors.lastname: van Blitterswijk
authors.forename: Jan
authors.initials: J
authors.lastname: de Boer
mesh_terms: D000465:Algorithms; D001672:Biocompatible Materials; D049109:Cell Proliferation; D016208:Databases, Factual; D057166:High-Throughput Screening Assays / Q000379:methods; D006801:Humans; D019344:Lactic Acid / Q000737:chemistry*; D059630:Mesenchymal Stem Cells / Q000166:cytology / Q000502:physiology*; D018613:Microscopy, Confocal; D008855:Microscopy, Electron, Scanning; D008856:Microscopy, Fluorescence; D011091:Polyesters; D011108:Polymers / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D001672:Biocompatible Materials; D011091:Polyesters; D011108:Polymers; D019344:Lactic Acid; C033616:poly(lactide)