Hierarchical access to encoded data on DNA nanostructures using administrator and user keys

Area of Science:

• Molecular nanotechnology
• Biotechnology
• Information science

Background:

• DNA nanotechnology offers potential for molecular information encoding and controlled access.
• Advancements in DNA data storage necessitate DNA-based hierarchical access methods for data management.
• Hierarchical data access in DNA carriers remains an underexplored area.

Purpose of the Study:

• To propose a novel data management system utilizing reconfigurable DNA nanostructures for hierarchical data access.
• To develop molecular triggers for controlled conformational changes in DNA nanostructures.
• To establish a framework for secure and private data management in DNA-based systems.

Main Methods:

• Designing reconfigurable DNA nanostructures as data carriers.
• Employing polymerase as a high-level administrator key for universal transformations.
• Utilizing specific DNA strand sets as low-level user keys for targeted transformations.
• Encoding multi-format messages for multi-user data compatibility.
• Characterizing structural transitions using Atomic Force Microscopy (AFM).

Main Results:

• Demonstrated hierarchical data access through DNA nanostructure conformational changes.
• Verified universal access for the administrator key (polymerase).
• Confirmed specific access for user keys (DNA strand sets) to designated data.
• Illustrated data compatibility across multiple formats and users.
• AFM confirmed successful structural transformations and data accessibility control.

Conclusions:

• The proposed system provides a robust framework for hierarchical data access on DNA carriers.
• This approach enhances DNA-based information security by restricting unauthorized access.
• The strategy supports user privacy by isolating data access.
• This work may inspire future sophisticated DNA-based information security solutions.