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Related Experiment Video

Updated: Jun 23, 2026

Microfluidic On-chip Capture-cycloaddition Reaction to Reversibly Immobilize Small Molecules or Multi-component Structures for Biosensor Applications

Microfluidic On-chip Capture-cycloaddition Reaction to Reversibly Immobilize Small Molecules or Multi-component Structures for Biosensor Applications

Published on: September 23, 2013

Immobilization chemistries.

Sascha Todt¹, Dietmar H Blohm

¹Center for Applied Genesensor-Technology, University of Bremen, , Bremen, Germany.

Methods in Molecular Biology (Clifton, N.J.)

|April 22, 2009

Summary

Nucleic acid immobilization chemistry is crucial for microarray success. This review surveys various attachment strategies, focusing on reactive groups and support materials for improved microarray technology.

Area of Science:

Biotechnology
Materials Science

Background:

The success of microarray experiments critically depends on the stable attachment of nucleic acid probes to the support surface.
Diverse immobilization chemistries are employed in nucleic acid microarray technology, influencing experimental outcomes.

Purpose of the Study:

To review key concepts and variants of immobilization chemistries used in nucleic acid microarray technology.
To survey strategies for attaching nucleic acid capture molecules to various support materials, emphasizing reactive groups.

Main Methods:

Overview of microarray substrates and their surface activation methods.
Description of "undefined" and "defined" immobilization strategies based on reactive groups.
Detailed example of aminopropyltriethoxysilane (APTES) functionalized glass substrate preparation for oligonucleotide immobilization.

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Main Results:

Adsorption of unmodified nucleic acids and coupling of modified nucleic acids to activated surfaces are key techniques.
Defined immobilization utilizes specific reactive moieties, while undefined methods involve multiple reactive groups on the capture molecule.
APTES-functionalized substrates coupled with PDITC linkers enable covalent immobilization of amino-modified oligonucleotides.

Conclusions:

Understanding immobilization chemistry is vital for advancing nucleic acid microarray technology.
The review provides foundational knowledge on immobilization principles and approaches for researchers in the field.
This work serves as an orientation guide to basic techniques in the evolving field of nucleic acid microarrays.