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Affinity hydrogels for controlled protein release using nucleic acid aptamers and complementary oligonucleotides.

Boonchoy Soontornworajit1, Jing Zhou, Matthew P Snipes

  • 1Department of Chemical, Materials & Biomolecular Engineering, University of Connecticut, Storrs, CT 06269-3222, USA.

Biomaterials
|June 21, 2011
PubMed
Summary

Researchers developed aptamer-functionalized hydrogels for controlled protein release. Complementary oligonucleotides triggered protein dissociation, showing potential for treating diseases with protein drugs.

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Area of Science:

  • Biomaterials Science
  • Drug Delivery Systems
  • Molecular Biology

Background:

  • Precise control over protein release from biomaterials is crucial for developing novel therapeutic strategies.
  • Aptamers, short DNA or RNA molecules, can bind to specific proteins, offering potential for targeted drug delivery.

Purpose of the Study:

  • To understand the mechanism of aptamer-protein dissociation triggered by complementary oligonucleotides.
  • To engineer aptamer-functionalized hydrogels for controlled protein release applications.

Main Methods:

  • Investigated the role of oligonucleotide tails in aptamer-protein dissociation.
  • Analyzed the synergistic effects of tail attachment and hybridization length on dissociation kinetics.
  • Utilized pegylated complementary oligonucleotides to trigger protein release from hydrogels.

Main Results:

  • Oligonucleotide tails are critical for inducing hybridization and triggering aptamer-protein dissociation.
  • Tail attachment and increased hybridization length synergistically enhance protein release.
  • Pegylated complementary oligonucleotides enabled timed protein release from aptamer-hydrogels.

Conclusions:

  • Aptamer-functionalized hydrogels offer a promising platform for controlled protein drug delivery.
  • Complementary oligonucleotides serve as effective triggers for modulating protein release kinetics.
  • This approach holds significant potential for the treatment of various human diseases.