Cited by 25Neuroscience and Neural EngineeringHydrogels: synthesis, properties, applicationsPolymer Surface Interaction Studies

On-line observation of cell growth in a three-dimensional matrix on surface-modified microelectrode arrays

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Lin, Shu-Ping, Kyriakides, Themis R., Chen, Jia-Jin J.·2009·Biomaterials

Abstract

Despite many successful applications of microelectrode arrays (MEAs), typical two-dimensional in-vitro cultures do not project the full scale of the cell growth environment in the three-dimensional (3D) in-vivo setting. This study aims to on-line monitor in-vitro cell growth in a 3D matrix on the surface-modified MEAs with a dynamic perfusion culture system. A 3D matrix consisting of poly(ethylene glycol) hydrogel supplemented with poly-D-lysine was subsequently synthesized in situ on the self-assembled monolayer modified MEAs. FTIR spectrum analysis revealed a peak at 2100 cm(-1) due to the degradation of the structure of the 3D matrix. After 2 wks, microscopic examination revealed that the non-degraded area was around 1500 microm(2) and provided enough space for cell growth. Fluorescence microscopy revealed that the degraded 3D matrix was non-cytotoxic allowing the growth of NIH3T3 fibroblasts and cortical neurons in vitro. Time-course changes of total impedance including resistance and reactance were recorded for 8 days to evaluate the cell growth in the 3D matrix on the MEA. A consistent trend reflecting changes of reactance and total impedance was observed. These in-vitro assays demonstrate that our 3D matrix can construct a biomimetic system for cell growth and analysis of cell surface interactions.

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Crossref · 10.1016/j.biomaterials.2009.03.017

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Authors
Lin, S.-P., Kyriakides, T. R., & Chen, J.-J. J.
Affiliations
  • Yale University (US)
  • National Cheng Kung University (TW)
Corresponding author
Chen, Jia-Jin J.
Venue
Biomaterials
Publisher
Elsevier BV
Published
2009-06
Volume
30
Issue
17
Pages
3110-3117
ISSN
0142-9612 (ISSN-L)
OpenAlex
W2150914040
Cited by
25
References
43
Citations by year
2023: 1 · 2022: 1 · 2021: 2 · 2020: 2 · 2019: 1 · 2018: 1 · 2017: 3 · 2015: 1 · 2014: 3 · 2013: 3 · 2012: 5
FWCI
0.97
Type
journal article
Language
en
Open access
Locations
  • Biomaterials (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Science Council
  • National Institutes of Health (5r01gm072194-11)
  • National Institute of Mental Health
  • National Institute of General Medical Sciences (R01-GM072194)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neural Engineering
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Medicine › Hydrogels: synthesis, properties, applications
  • Physical Sciences › Materials Science › Surfaces, Coatings and Films › Polymer Surface Interaction Studies
Keywords
microelectrode arrays, 3D cell culture, poly(ethylene glycol) hydrogels, poly-D-lysine, self-assembled monolayers, impedance spectroscopy, cell growth monitoring, hydrogel degradation, NIH3T3 cells, cortical neurons, cell-surface interactions
MeSH terms
Animals, Biocompatible Materials, Cells, Cultured, Cerebral Cortex, Equipment Design, Fibroblasts, Fluorescent Dyes, Gold, Indoles, Microelectrodes, Microscopy, Fluorescence, Neurons, Online Systems, Perfusion, Phalloidine, Polyethylene Glycols, Rhodamines, Substrate Specificity, Surface Properties, Time Factors, Electric Impedance, Spectroscopy, Fourier Transform Infrared, Cell Culture Techniques, Hydrogel, Polyethylene Glycol Dimethacrylate, Biomimetics, NIH 3T3 Cells, Cell Proliferation, Mice

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