Long-Term Stability and Integrity of Plasmid-Based DNA Data Storage

Hoang Nguyen; Jeho Park; Seon Park; Chang-Soo Lee; Seungwoo Hwang; Yong-Beom Shin; Tai Ha; Moonil Kim

doi:10.3390/polym10010028

journal article Open Access Jan 01, 2018

Long-Term Stability and Integrity of Plasmid-Based DNA Data Storage

Hoang Nguyen

Jeho Park Seon Park Chang-Soo Lee

Seungwoo Hwang

Yong-Beom Shin Tai Ha Moonil Kim

Polymers Vol. 10 No. 1 pp. 28 · MDPI AG

View at Publisher Save 10.3390/polym10010028

Abstract

Validation of long-term DNA stability and integrity are essential for the use of DNA in data storage applications. Because of this, we evaluated the plasmid-based DNA data storage in a manner that preserves DNA stability and integrity. A document consisting of 2046 words was encoded with DNA sequences using Perl script, and the encoded DNA sequences were synthesized for information storage. The DNA comprised a total of 22 chemically synthesized DNA fragments with 400 nucleotides each, which were incorporated into a plasmid vector. A long-term DNA stability study demonstrated that 3-year stored plasmid containing text information showed DNA stability at controlled conditions of −20 °C. The plasmid DNA under accelerated aging conditions (AAC) up to 65 °C for 20 days, which corresponds to approximately 20 years of storage at −20 °C, also exhibited no significant differences in DNA stability compared to newly produced plasmid. Also, the 3-year old plasmid stored at −20 °C and the AAC-tested plasmid stored up to 65 °C for 20 days had functional integrity and nucleotide integrity comparable to control sample, thereby allowing for retrieval of the original error-free text data. Finally, the nucleotides were sequenced, and then decoded to retrieve the original data, thereby allowing us to read the text with 100% accuracy, and amplify the DNA with a simple and quick bacterial transformation. To the best of our knowledge, this is the first report on examining the long-term stability and integrity of plasmid-based DNA data storage. Taken together, our results indicate that plasmid DNA data storage can be useful for long-term archival storage to recover the source text in a reproducible and accountable manner.

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Details

Published: Jan 01, 2018
Vol/Issue: 10(1)
Pages: 28
License: View

Authors

H

Hoang Nguyen