Analytical and Bioanalytical Chemistry

, Volume 390, Issue 3, pp 801–808

Cellular microarrays for use with capillary-driven microfluidics

  • Robert Lovchik
  • Corinne von Arx
  • Angelika Viviani
  • Emmanuel Delamarche
Original Paper

DOI: 10.1007/s00216-007-1436-3

Cite this article as:
Lovchik, R., von Arx, C., Viviani, A. et al. Anal Bioanal Chem (2008) 390: 801. doi:10.1007/s00216-007-1436-3

Abstract

We present a method for the facile arraying of cells on microstructured substrates which should be suitable for cellular assays in autonomous microfluidic capillary systems (CSs). The CSs, which were designed and microfabricated in Si, have various microfluidic functional elements including reaction chambers wherein cellular arrays are located. Two methods for arraying the cells were explored. In the first method, a hydrophobic alkanethiol was microcontact-printed on the bottom surface of a microfluidic reaction chamber. The subsequent adsorption of protein-repellent alkanethiols around the printed areas and the deposition from solution of fibronectin (FN) on the hydrophobic areas resulted in an adhesive pattern for the attachment of living human breast cancer cells. This method was limited by the formation of cellular clusters, which proved difficult to remove selectively. The second method employed a poly(dimethylsiloxane) elastomer having oval recessed microstructures. The selective coating of the inner walls of the ovals with FN and the blocking of the mesas around the ovals with bovine serum albumin (BSA) permitted single or multiple cells to be arrayed depending on the size of the ovals. The possibility of sealing CSs with cells arrayed on poly(dimethylsiloxane) may provide a versatile platform for high-throughput experimentation down to the single-cell level.

https://static-content.springer.com/image/art%3A10.1007%2Fs00216-007-1436-3/MediaObjects/216_2007_1436_Figa_HTML.gif
Figure

The deposition of one or a few living cells in fibronectin-coated poly(dimethylsiloxane) microstructures results in cellular arrays, which can be interfaced with capillary-driven microfluidics

Keywords

MicrofluidicsCellular arraysMicrocontact printingPoly(dimethylsiloxane)

Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • Robert Lovchik
    • 1
    • 2
  • Corinne von Arx
    • 2
  • Angelika Viviani
    • 2
  • Emmanuel Delamarche
    • 1
  1. 1.IBM Research GmbHZurich Research LaboratoryRüschlikonSwitzerland
  2. 2.University of Applied Sciences WädenswilWädenswilSwitzerland