Microfluidic ARray Synthesizer (MArS) for rapid preparation and hybridization of custom DNA microarray.

Area of Science:

• Biotechnology
• Microfluidics
• Oligonucleotide Synthesis

Background:

• Custom DNA arrays are crucial for various biological applications.
• Current synthesis and hybridization methods can be time-consuming and reagent-intensive.

Purpose of the Study:

• To demonstrate a simplified method for integrated DNA array synthesis and hybridization.
• To develop a custom array synthesizer using microfluidics and commercial components.

Main Methods:

• Integration of a commercial DLP projector and oligonucleotide synthesizer with a microfluidic chamber to create the Microfluidic ARray Synthesizer (MArS).
• Synthesis of two custom oligonucleotide arrays within the microfluidic channel.
• In-situ deprotection and hybridization performed in the same microfluidic chamber.

Main Results:

• The MArS system efficiently produced two high-quality, nearly identical custom oligonucleotide arrays.
• Reagent consumption was reduced by synthesizing two arrays with the cost of one.
• Assay time was decreased by two orders of magnitude due to integrated synthesis and hybridization.
• Enhanced mismatch discrimination was observed within the microfluidic chamber.

Conclusions:

• The demonstrated MArS method offers a simple, efficient, and cost-effective approach for custom DNA array synthesis.
• Microfluidic integration significantly accelerates DNA assay workflows and improves performance.
• The MArS system provides a valuable tool for rapid custom oligonucleotide array generation.