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Synthesis of chemically modified DNA.

Arun Shivalingam1, Tom Brown2

  • 1Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, U.K.

Biochemical Society Transactions
|June 11, 2016
PubMed
Summary

Synthesizing long, modified DNA is crucial for advanced therapies and synthetic biology. This review covers current methods for creating chemically modified nucleic acids up to 1000 base pairs, identifying limitations and future research directions.

Keywords:
chemical ligationmodified triphosphatesoligonucleotide synthesis

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Area of Science:

  • Molecular Biology
  • Synthetic Biology
  • Biochemistry

Background:

  • DNA is composed of four standard nucleobases: adenine, cytosine, guanine, and thymine.
  • Chemical modifications, like methylation, or incorporation of unnatural base pairs can alter DNA function and expand its capabilities.
  • Controlled synthesis of long, modified DNA is essential for therapeutic and synthetic biology applications.

Purpose of the Study:

  • To review current methodologies for synthesizing moderately long (up to 1000 base pairs) chemically modified nucleic acids.
  • To identify the limitations of existing DNA synthesis techniques for modified sequences.
  • To highlight areas for future development in the field of modified DNA synthesis.

Main Methods:

  • Review of literature on chemical synthesis of modified nucleic acids.
  • Analysis of methods for incorporating unnatural base pairs and chemical modifications.
  • Evaluation of techniques for producing DNA sequences up to 1000 base pairs with modifications.

Main Results:

  • Several methods exist for synthesizing chemically modified nucleic acids.
  • Current techniques are limited in producing very long modified DNA sequences in a controlled manner.
  • The review identifies specific challenges and bottlenecks in current synthesis protocols.

Conclusions:

  • Advancements in synthesizing long, chemically modified DNA are critical for unlocking its potential in biotechnology.
  • Further research is needed to overcome limitations in current synthesis methods, particularly for longer sequences.
  • Improved synthesis capabilities will enable novel therapeutic and synthetic biology applications.