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The flow of genetic information in cells from DNA to mRNA to protein is described by the central dogma, which states that genes specify the sequence of mRNAs, which in turn specify the sequence of amino acids making up all proteins. The decoding of one molecule to another is performed by specific proteins and RNAs. Because the information stored in DNA is so central to cellular function, it makes intuitive sense that the cell would make mRNA copies of this information for protein synthesis...

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Updated: May 20, 2025

DNA-Tethered RNA Polymerase for Programmable In vitro Transcription and Molecular Computation

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Published on: December 29, 2021

Sequential DNA Coding for Programmable Information Encryption.

Wenhao Fu¹, Yue Zhao¹, Jingtao Cao¹

¹Institute of Analytical Chemistry and Instrument for Life Science, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P. R. China.

Advanced Materials (Deerfield Beach, Fla.)

|March 26, 2025

Summary

This summary is machine-generated.

This study introduces a programmable DNA encryption method using the hairpin-mediated primer exchange reaction (HAMER) system. This DNA data storage approach enhances information security against brute-force attacks.

Keywords:

DNA information storage hairpin‐mediated primer exchange reaction information encryption long‐chain DNA synthesis nucleic acid encoding nucleic acid information materials

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Area of Science:

Biotechnology
Information Security
Molecular Engineering

Background:

DNA's inherent variability and programmability make it a promising material for advanced information storage and data encryption.
Current encryption methods face vulnerabilities due to singular approaches and limited secret key randomness, necessitating enhanced security solutions.
The demand for robust information security is growing, driving research into novel encryption technologies.

Purpose of the Study:

To develop a programmable encryption strategy utilizing long-chain DNA synthesis and sequential encoding.
To introduce the hairpin-mediated primer exchange reaction (HAMER) system for generating DNA keys and encoding information.
To demonstrate the retrieval of encrypted text and image data with user-permission-based access control.

Main Methods:

Employed long-chain DNA synthesis for creating complex data structures.
Utilized a novel hairpin-mediated primer exchange reaction (HAMER) system for programmable key generation and information encoding.
Implemented sequential encoding for robust data representation within DNA molecules.

Main Results:

Successfully generated DNA keys and encoded text and image data using the HAMER system.
Demonstrated the decoding and retrieval of encrypted data through DNA sequencing.
Established a programmable encryption framework with customized access control based on user permissions.

Conclusions:

DNA is a high-performance material for next-generation information storage and encryption.
The proposed programmable encryption framework offers enhanced security, addressing limitations of current methods.
This DNA-based approach shows strong potential for meeting future demands in confidentiality, integrity, and availability for information security systems.