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Concentration of lambda concatemers using a 3D printed device.

Samantha Rau¹, Thi Huynh¹, Alex Larsen¹

¹Department of Chemistry, University of Nebraska-Kearney, Kearney, Nebraska, USA.

Electrophoresis

|February 17, 2023

Summary

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Researchers developed a 3D printed device using a bis-acrylamide roadblock to concentrate large DNA molecules. This method aids in genome assembly by overcoming challenges associated with DNA fragmentation during standard molecular biology techniques.

Area of Science:

Genomics
Molecular Biology
Biotechnology

Background:

Identifying genomic variations is challenging due to the large size of DNA, which can be fragmented by standard molecular biology techniques.
Large DNA molecules are crucial for accurate genome assembly, especially when spanning significant variations.
A method to concentrate large DNA without fragmentation is needed to facilitate genomic studies.

Purpose of the Study:

To develop and validate a novel method for concentrating large DNA molecules using a 3D printed device.
To assess the efficiency of DNA concentration and recovery using a bis-acrylamide roadblock.
To optimize parameters such as voltage and acrylamide concentration for DNA concentration.

Main Methods:

A proof-of-principle 3D printed device was fabricated with a cured bis-acrylamide roadblock.

Keywords:

3D printing DNA concentration device lambda concatamers

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Lambda concatemer DNA, stained with YOYO-1, was loaded into the device.

Varying voltages and acrylamide concentrations were applied to concentrate DNA at the roadblock interface.

Fluorescence measurements quantified DNA concentration and recovery rates.

Main Results:

The 3D printed device successfully concentrated lambda concatemer DNA at the bis-acrylamide roadblock interface.
DNA recovery was 37% of the original sample.
The volume of the DNA solution was reduced by a factor of 3.

Conclusions:

A 3D printed device with a bis-acrylamide roadblock is effective for concentrating large DNA molecules.
This technique offers a potential solution for overcoming DNA fragmentation issues in molecular biology.
The method shows promise for improving genome assembly by providing concentrated, intact large DNA fragments.