Handcuffed antisense oligonucleotides for light-controlled cell-free expression

Chem Commun (Camb). 2023 May 9;59(38):5685-5688. doi: 10.1039/d3cc01374j.

Abstract

Developing simple methods to silence antisense oligonucleotides (ASOs) using photocages opens up the possibility of precise regulation of biological systems. Here, we have developed a photocaging strategy based on 'handcuffing' two ASOs to a protein. Silencing was achieved by divalent binding of two terminally photocleavable biotin-modified ASOs to a single streptavidin. These 'handcuffed' oligonucleotides showed a drastic reduction in gene knockdown activity in cell-free protein synthesis and were unlocked through illumination, regaining full activity.

MeSH terms

  • Epithelial Cells / metabolism
  • Gene Knockdown Techniques
  • Humans
  • Oligonucleotides* / metabolism
  • Oligonucleotides, Antisense* / genetics
  • Oligonucleotides, Antisense* / metabolism

Substances

  • Oligonucleotides
  • Oligonucleotides, Antisense