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Response of Osteoblasts to Electric Field Line Patterns Emerging from Molecule Stripe Landscapes
- Molecular surface gradients can constitute electric field landscapes and serve to control local cell adhesion and migration. Cellular responses to electric field landscapes may allow the discovery of routes to improve osseointegration of implants. Flat molecule aggregate landscapes of amine- or carboxyl-teminated dendrimers, amine-containing protein and polyelectrolytes were prepared on glass to provide lateral electric field gradients through their differing zeta potentials compared to the glass substrate. The local as well as the mesoscopic morphological responses of adhered osteoblasts (MG-63) with respect to the stripes were studied by means of Scanning Ion Conductance Microscopy (SICM) and Fluorescence Microscopy, in situ. A distinct spindle shape oriented parallel to the surface pattern as well as a preferential adhesion of the cells on the glass site have been observed at a stripe and spacing width of 20 μm. Excessive ruffling is observed at the spindle poles, where the cells extend. To explain this effect of material preference and electro-deformation, we put forward a retraction mechanism, a localized form of double-sided cathodic taxis.
Author: | Christian Voelkner, Issam Assi, Willi Karberg, Regina Lange, Sven Neuber, Christiane A. Helm, Martina Gruening, J. Barbara Nebe, Ingo Barke, Sylvia Speller |
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URN: | urn:nbn:de:gbv:9-opus-63946 |
DOI: | https://doi.org/10.3390/app12147329 |
ISSN: | 2076-3417 |
Parent Title (English): | Applied Sciences |
Publisher: | MDPI |
Place of publication: | Basel |
Editor: | José M. Franco |
Document Type: | Article |
Language: | English |
Date of first Publication: | 2022/07/21 |
Release Date: | 2022/11/17 |
Tag: | MG-63; cell adhesion; electric field; microcontact printing |
GND Keyword: | - |
Volume: | 12 |
Issue: | 14 |
Page Number: | 13 |
Faculties: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik |
Licence (German): | Creative Commons - Namensnennung |