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Related Experiment Video

Updated: Jul 11, 2026

High-throughput Protein Expression Generator Using a Microfluidic Platform
09:26

High-throughput Protein Expression Generator Using a Microfluidic Platform

Published on: August 23, 2012

Continuous-flow microfluidic printing of proteins for array-based applications including surface plasmon resonance

Sriram Natarajan1, Phini S Katsamba, Adam Miles

  • 1Department of Chemical Engineering, University of Utah, Salt Lake City, UT 84132, USA.

Analytical Biochemistry
|September 18, 2007
PubMed
Summary

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This study introduces a novel three-dimensional microfluidic system for printing protein arrays. This advanced method enables the precise deposition of dilute and impure protein samples, improving array quality and expanding applications.

Area of Science:

  • Biotechnology
  • Microfluidics
  • Array Technology

Background:

  • Protein array fabrication faces challenges with protein concentration, purity, and traditional printing methods.
  • Existing pin and ink jet printing techniques have limitations in sample volume and spot quality.

Purpose of the Study:

  • To develop an improved method for protein array fabrication using microfluidics.
  • To overcome limitations of traditional protein printing techniques regarding sample concentration and purity.

Main Methods:

  • Development of a three-dimensional microfluidic system for depositing protein samples.
  • Creation of discrete 250-microm square spots on a target surface.
  • Utilizing continuous flow for sample introduction to each spot.

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Last Updated: Jul 11, 2026

High-throughput Protein Expression Generator Using a Microfluidic Platform
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The Submerged Printing of Cells onto a Modified Surface Using a Continuous Flow Microspotter
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The Submerged Printing of Cells onto a Modified Surface Using a Continuous Flow Microspotter

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Flow-pattern Guided Fabrication of High-density Barcode Antibody Microarray
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Main Results:

  • Successfully fabricated a 48-spot protein array within a 0.5 x 1 cm area.
  • Demonstrated capability to spot dilute proteins (<0.1 microg/ml) and samples with high contaminant concentrations (>10,000-fold molar excess).
  • Produced spots with superior uniformity and better-defined borders compared to pin printing.

Conclusions:

  • The microfluidic printing system enhances protein array fabrication by enabling continuous flow sample introduction.
  • This technology improves spot quality and allows for the use of lower concentration and less pure protein samples.
  • The developed method is expected to broaden the applications of protein arrays in research and diagnostics.