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Related Concept Videos

DNA Microarrays02:34

DNA Microarrays

Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...

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Microarray Polymer Profiling (MAPP) for High-Throughput Glycan Analysis
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Carbohydrate microarrays by microcontact printing.

Christian Wendeln1, Andreas Heile, Heinrich F Arlinghaus

  • 1Organic Chemistry Institute and Center for Nanotechnology, Westfalische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster, Germany.

Langmuir : the ACS Journal of Surfaces and Colloids
|January 23, 2010
PubMed
Summary

Researchers developed carbohydrate microarrays using microcontact printing (microCP) for efficient surface immobilization. This method allows for the creation of complex carbohydrate patterns for biological studies.

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Area of Science:

  • Carbohydrate Chemistry
  • Surface Science
  • Biotechnology

Background:

  • Carbohydrate microarrays are crucial tools for studying carbohydrate-protein interactions.
  • Existing methods for carbohydrate immobilization can be time-consuming and complex.

Purpose of the Study:

  • To develop an efficient method for preparing carbohydrate microarrays.
  • To investigate the utility of microcontact printing (microCP) for carbohydrate immobilization.
  • To demonstrate the creation of patterned carbohydrate surfaces for biological applications.

Main Methods:

  • Diene-modified carbohydrates (galactose, glucose, mannose, lactose, maltose) were immobilized onto maleimide-terminated self-assembled monolayers (SAMs) using microcontact printing (microCP).
  • Diels-Alder reaction was employed for exclusive immobilization within the printed contact area.
  • Successive printing enabled the creation of microarrays with up to three different carbohydrates.

Main Results:

  • Cyclopentadiene-functionalized carbohydrates were printed rapidly at room temperature.
  • Furan-functionalized carbohydrates required longer printing times and elevated temperatures.
  • Surface characterization confirmed successful immobilization and patterning using contact angle measurements, XPS, TOF-SIMS, and fluorescence microscopy.
  • The prepared microarrays demonstrated specific binding with lectins concanavalin A (ConA) and peanut agglutinin (PNA), retaining carbohydrate selectivity.

Conclusions:

  • Microcontact printing (microCP) provides an efficient and versatile method for fabricating carbohydrate microarrays.
  • The Diels-Alder reaction facilitates precise carbohydrate patterning on various substrates.
  • These carbohydrate microarrays are suitable for studying specific carbohydrate-lectin interactions.