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Related Experiment Video

Updated: Aug 29, 2025

High-Density DNA and RNA microarrays - Photolithographic Synthesis, Hybridization and Preparation of Large Nucleic Acid Libraries

High-Density DNA and RNA microarrays - Photolithographic Synthesis, Hybridization and Preparation of Large Nucleic Acid Libraries

Published on: August 12, 2019

Initiating DNA-Encoded Library Synthesis with a Hexathymidine DNA Oligonucleotide.

Mateja Klika Škopić¹, Denise Dos Santos Smith¹, Anne Gohla¹

¹Department of Chemistry and Chemical Biology, TU Dortmund University, Dortmund, Germany.

Methods in Molecular Biology (Clifton, N.J.)

|September 9, 2022

Summary

DNA-encoded compound libraries (DELs) accelerate drug discovery. This study details a novel synthesis strategy using a stable hexathymidine DNA anchor for creating diverse DELs for screening.

Keywords:

Adapter oligonucleotide Au(I)-mediated heterocycle synthesis DNA ligation DNA-encoded chemistry DNA-encoded library Hexathymidine Pictet-Spengler reaction Solid-phase synthesis

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Last Updated: Aug 29, 2025

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Area of Science:

Medicinal Chemistry
Synthetic Chemistry
Drug Discovery

Background:

DNA-encoded compound libraries (DELs) are a powerful and validated technology for small molecule screening in drug discovery.
DELs enable the rapid exploration of vast chemical spaces for identifying novel drug leads.

Purpose of the Study:

To present a novel library synthesis strategy for DNA-encoded compounds (DELs).
To demonstrate the utility of a chemically stable DNA anchor for DEL construction.

Main Methods:

A synthesis strategy was developed starting with a solid-phase-bound hexathymidine DNA sequence (hexT).
Various heterocycle conjugates were synthesized from simple precursors using metal or acid catalysis.
The synthesized hexT conjugates were isolated, characterized, and subsequently ligated to coding DNA sequences.

Main Results:

The developed method allows for the efficient synthesis of diverse heterocycle conjugates on a stable DNA scaffold.
Successful isolation, characterization, and ligation of the hexT conjugates to coding DNA were achieved, demonstrating the feasibility of the strategy.

Conclusions:

This novel synthesis strategy provides a robust platform for generating DNA-encoded compound libraries.
The use of a stable hexT DNA anchor enhances the reliability and efficiency of DEL synthesis for drug discovery screening.