Control of Mammalian Cell and Bacteria Adhesion on Substrates Micropatterned with Poly(ethylene glycol) Hydrogels

Won Gun Koh, Alexander Revzin, Aleksandr Simonian, Tony Reeves, Michael Pishko

Research output: Contribution to journalArticle

69 Citations (Scopus)

Abstract

A simple method for controlling the spatial positioning of mammalian cells and bacteria on substrates using patterned poly(ethylene glycol) (PEG) hydrogel microstructures is described. These microstructures were fabricated using photolithography on silicon, glass or poly (dimethylsiloxane) (PDMS) surfaces modified with a 3-(trichlorosilyl) propyl methacrylate (TPM) monolayer. During the photogelation reaction, the resulting hydrogel microstructures were covalently bound to the substrate via the TPM monolayer and did not detached from the substrate upon hydration. For mammalian cell patterning, microwell arrays of different dimensions were fabricated. These microwells were composed of hydrophilic PEG hydrogel walls surrounding hydrophobic TPM floors inside the microwells. Murine 3T3 fibroblasts and transformed hepatocytes were shown to selectively adhere to the TPM monolayer inside the microwells, maintaining their viability, while adherent cells were not present on the hydrogel walls. The number of cells inside one microwell could be controled by changing the lateral dimension of the microwells, thus allowing only a single cell per microwell if desired. In the case of 30 x 30 μm microwells, as many as 400 microwells were fabricated in 1 mm2. In addition, PEG hydrogel microstructures were also shown to effectively resist the adhesion of bacteria such as Escherichia coli.

Original languageEnglish (US)
Pages (from-to)11-19
Number of pages9
JournalBiomedical Microdevices
Volume5
Issue number1
DOIs
StatePublished - Mar 2003
Externally publishedYes

Fingerprint

Hydrogels
Ethylene Glycol
Hydrogel
Cell Adhesion
Methacrylates
Polyethylene glycols
Bacteria
Adhesion
Cells
Substrates
Monolayers
Microstructure
Photolithography
Silicon
Polydimethylsiloxane
Fibroblasts
Hydration
Escherichia coli
Glass
Hepatocytes

Keywords

  • Cell patterning
  • Microwells
  • Photolithography
  • Poly(ethylene glycol) hydrogel microstructures

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Genetics
  • Neuroscience(all)

Cite this

Control of Mammalian Cell and Bacteria Adhesion on Substrates Micropatterned with Poly(ethylene glycol) Hydrogels. / Koh, Won Gun; Revzin, Alexander; Simonian, Aleksandr; Reeves, Tony; Pishko, Michael.

In: Biomedical Microdevices, Vol. 5, No. 1, 03.2003, p. 11-19.

Research output: Contribution to journalArticle

Koh, Won Gun ; Revzin, Alexander ; Simonian, Aleksandr ; Reeves, Tony ; Pishko, Michael. / Control of Mammalian Cell and Bacteria Adhesion on Substrates Micropatterned with Poly(ethylene glycol) Hydrogels. In: Biomedical Microdevices. 2003 ; Vol. 5, No. 1. pp. 11-19.
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