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          Institute: MPI für Polymerforschung     Collection: MPI Polymerforschung     Display Documents

ID: 59631.0, MPI für Polymerforschung / MPI Polymerforschung
Micropatterned substrates for the growth of functional neuronal networks of defined geometry
Authors:Vogt, A. K.; Lauer, L.; Knoll, Wolfgang; Offenhäusser, Andreas
Date of Publication (YYYY-MM-DD):2003-09
Title of Journal:Biotechnology Progress
Journal Abbrev.:Biotechnol. Prog.
Issue / Number:5
Start Page:1562
End Page:1568
Review Status:not specified
Audience:Not Specified
Abstract / Description:The in vitro assembly of neuronal networks with control over cell position and connectivity is a fascinating approach not only for topics in basic neuroscience research but also in diverse applications such as biosensors and tissue engineering. We grew rat embryonic cortical neurons on patterned substrates created by microcontact printing. Polystyrene was used as a cell repellent background, onto which a grid pattern of physiological proteins was applied. We printed laminin and a mixture of extracellular matrix proteins and additionally both systems mixed with polylysine. Attachment of cells to the pattern with high fidelity as well as the formation of chemical synapses between neighboring cells on the pattern could be observed in all four cases, but cell attachment was strongly increased on samples containing polylysine. Neurons grown on patterned substrates had a membrane capacity smaller than that of neurons on homogeneously coated controls, which we attributed to the geometrical restrictions, but did not differ either in resting membrane potential or in the quality of synapses they formed. We therefore believe that the cells attach and differentiate normally on the pattern and form functional, mature synapses following the predefined geometry.
Comment of the Author/Creator:Date: 2003, SEP-OCT
External Publication Status:published
Document Type:Article
Affiliations:MPI für Polymerforschung
External Affiliations:KFA Jülich GmbH, Forschungszentrum, Inst Thin Films & Interfaces Bio & Chemosensors, D-52425 Jülich, Germany.
Identifiers:ISI:000185816400023 [ID No:1]
ISSN:8756-7938 [ID No:2]
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