Highly Ordered DNA Framework Interface Enables Efficient Enzymatic Oligonucleotide Synthesis

Area of Science:

• Biotechnology
• Molecular Biology
• Nanotechnology

Background:

• De novo DNA synthesis is vital in life sciences.
• Enzymatic oligonucleotide synthesis (EOS) offers advantages like cost-effectiveness and environmental friendliness over chemical methods.
• Current EOS methods face challenges due to limited primer accessibility and enzyme hindrance.

Purpose of the Study:

• To develop a nanoscopic interface for efficient enzymatic oligonucleotide synthesis.
• To overcome limitations in primer accessibility and enzyme spatial hindrance in EOS.
• To enhance DNA synthesis yield and accuracy for applications like DNA information storage.

Main Methods:

• Utilized tetrahedral DNA nanostructures (TDN) as a 3D DNA framework.
• Engineered a nanoscopic interface to provide ordered orientation and spacing for DNA primers.
• Investigated the effect of the TDN scaffold on enzyme-substrate affinity and reaction kinetics.

Main Results:

• The TDN scaffold significantly improved enzyme accessibility and catalytic efficiency compared to single-stranded structures.
• TDN-based EOS reduced deletion errors and increased yield during the synthesis of patterned DNA sequences.
• Successfully synthesized a 60-nucleotide DNA fragment with a 96.82% stepwise yield, enabling accurate retrieval of 15 bytes of text information.

Conclusions:

• The developed TDN-based nanoscopic interface enables highly efficient and accurate enzymatic oligonucleotide synthesis.
• This approach offers a robust foundation for advancing DNA synthesis technologies.
• Applications include improved DNA information storage and enhanced genetic research capabilities.