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Updated: Jun 19, 2026

A Versatile Method of Patterning Proteins and Cells
09:57

A Versatile Method of Patterning Proteins and Cells

Published on: February 26, 2017

Durable, region-specific protein patterning in microfluidic channels.

Lindsey K Fiddes1, Ho Ka C Chan, Bryan Lau

  • 1Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada.

Biomaterials
|October 6, 2009
PubMed
Summary
This summary is machine-generated.

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We developed a simple method to covalently immobilize proteins in poly(dimethyl siloxane) (PDMS) microchannels. This technique enables precise protein patterning for advanced microfluidic applications.

Area of Science:

  • Biotechnology
  • Materials Science
  • Microfluidics

Background:

  • Protein patterning is crucial for controlling biological interactions in microfluidic devices.
  • Existing methods often lack specificity, longevity, or compatibility with diverse geometries.

Purpose of the Study:

  • To present a straightforward and accessible method for covalent protein patterning in poly(dimethyl siloxane) (PDMS) microchannels.
  • To demonstrate the versatility and robustness of the developed protein immobilization technique.

Main Methods:

  • Region-specific photografting of poly(acrylamide) (PAAm) onto PDMS channel walls.
  • Bioconjugation of the grafted PAAm layer with target proteins.
  • Characterization of protein pattern specificity, fidelity, and longevity under shear stress.

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Last Updated: Jun 19, 2026

A Versatile Method of Patterning Proteins and Cells
09:57

A Versatile Method of Patterning Proteins and Cells

Published on: February 26, 2017

Patterning of Microorganisms and Microparticles through Sequential Capillarity-assisted Assembly
10:17

Patterning of Microorganisms and Microparticles through Sequential Capillarity-assisted Assembly

Published on: November 4, 2021

Microfluidic Fabrication of Polymeric and Biohybrid Fibers with Predesigned Size and Shape
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Microfluidic Fabrication of Polymeric and Biohybrid Fibers with Predesigned Size and Shape

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Main Results:

  • Achieved symmetric and high-fidelity protein patterns on all channel surfaces.
  • Demonstrated compatibility with various microchannel geometries.
  • Confirmed excellent protein pattern longevity under shear stress up to 1 dyn/cm.
  • Successfully created multi-protein gradients and in-situ patterned protein islands.

Conclusions:

  • The developed method offers a reliable approach for covalent protein immobilization in PDMS microchannels.
  • This technique facilitates the creation of complex protein arrangements for advanced microfluidic applications.
  • The method's generality and robustness support its broad applicability in biological research and diagnostics.