Screening platform for cell contact guidance based on inorganic biomaterial micro/nanotopographical gradients

Zhou, Q., Castañeda Ocampo, O., Guimarães, C., Kuhn, P., van Kooten, T. & van Rijn, P. 21-Aug-2017 In : ACS Applied Materials & Interfaces.

Research output: Scientific - peer-reviewArticle

High-throughput screening (HTS) methods based on topography gradients or arrays have been extensively used to investigate cell-material interactions. However, it is a huge technological challenge to cost efficiently prepare topographical gradients of inorganic biomaterials due to their inherent material properties. Here, we developed a novel strategy translating PDMS-based wrinkled topography gradients with amplitudes from 49 nm to 2561 nm and wavelengths between 464 and 7121 nm to inorganic biomaterials (SiO2, Ti/TiO2, Cr/CrO3, Al2O3) which are frequently used clinical materials. Optimal substratum conditions promoted human bone-marrow derived mesenchymal stem cell (hBM-MSC) alignment, elongation, cytoskeleton arrangement, filopodia development as well as cell adhesion in vitro which depended both on topography and interface material. This study displays a positive correlation between cell alignment and the orientation of cytoskeleton, filopodia, and focal adhesions. This platform vastly minimizes the experimental efforts both for inorganic material interface engineering and cell biological assessments in a facile and effective approach. The practical application of the HTS technology is expected to aid in the acceleration of developments of inorganic clinical biomaterials.

Original languageEnglish
JournalACS Applied Materials & Interfaces
StateE-pub ahead of print - 21-Aug-2017


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